JP5899591B2 - V-type engine intake system for vehicles - Google Patents

Description

  The present invention relates to an intake device for a V-type engine for a vehicle, and in particular, a first intake passage and a first intake passage are provided between first and second banks which are provided in an engine body mounted on a vehicle and form a V shape. A first throttle body corresponding to the first bank having a first throttle valve that opens and closes, and a second throttle valve corresponding to the second bank having a second throttle valve that opens and closes the second intake passage and the second intake passage. An electric motor, which is connected to the throttle body and is arranged with the rotation axes of the first and second throttle valves along the vehicle width direction, is common to the first and second throttle valves. Further, the present invention relates to a vehicle V-type engine intake device that has a rotation axis parallel to the rotation axis of the second throttle valve and is linked to and connected to the first and second throttle valves.

  In a V-type engine for a vehicle, an air intake device in which a fuel injection valve is provided and a throttle body corresponding to each of a pair of banks is disposed between both banks is already known from Patent Document 1 and Patent Document 2. ing.

JP 2009-85111 A JP 2004-132290 A

  However, in the one disclosed in Patent Document 1, the throttle motor of the throttle body corresponding to one bank and the electric motor for driving the throttle valve of the throttle body corresponding to the other bank are both in side view. It is arrange | positioned on the outer side of the throttle body corresponding to one bank, and an intake device will become large in the arrangement direction of both banks. On the other hand, in the one disclosed in Patent Document 2, the electric motor for driving the throttle valve of the throttle body corresponding to one bank and the throttle valve of the throttle body corresponding to the other bank is shown in side view. Although it is arranged between the throttle bodies and the problem in the above-mentioned patent document 1 is solved, the throttle valve is closed on the side where the throttle valve is sandwiched between the power transmission position from the electric motor to the throttle valve. The energizing coil spring is disposed, and the intake device is enlarged in the direction along the rotation axis of the throttle valve.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a vehicle V-type engine intake device that can be made compact.

In order to achieve the above object, the present invention provides a first intake passage and a first intake passage which are provided in an engine body mounted on a vehicle and which open and close a first intake passage and a first intake passage between first and second banks forming a V shape. A first throttle body having a throttle valve and corresponding to the first bank; and a second throttle body having a second throttle valve that opens and closes the second intake passage and the second intake passage and corresponding to the second bank. The first and second throttle valves are electrically connected to each other and arranged with the rotation axes of the first and second throttle valves along the vehicle width direction, and are common to the first and second throttle valves. In an intake device for a V-type engine for a vehicle having a rotation axis parallel to a rotation axis of the valve and linked to and connected to the first and second throttle valves, the first and second throttle bodies are projected onto a horizontal plane. Is arranged a central axis of the second intake passage above to be shifted to one side in the vehicle width direction from the center axis of the first intake passage, at least a portion of said electric motor disposed between said first and second throttle bodies but the rotation axis and the second intake passage of the vehicle on one widthwise side of the intersection and the second throttle valve of the intersection of the inner surface of the rotation axis and the first intake passage of the first throttle valve in the projection drawing together are positioned within the deviation range at the vehicle width direction between the intersection of the vehicle on one widthwise side of the intersection of the inner surface, a direction perpendicular to the imaginary plane passing through the rotation axis of the first and second throttle valve in disposed between one end and the other end of the first and second throttle bodies, the first coil spring for biasing the first throttle valve to the closing side is disposed in the vehicle width direction on one side of the first throttle body , Close the second throttle valve Second coil spring for biasing is a first feature that it is located on a side of the second throttle body opposite the side where the electric motor is disposed in the vehicle width direction.

According to the present invention, in addition to the configuration of the first feature, a first fuel injection valve that injects fuel downstream of the first throttle valve is connected to the first throttle body on the other side in the vehicle width direction. Rutotomoni, disposed between one end and the other end of the first and second throttle bodies in the direction perpendicular to the virtual plane while overlapping at least a portion in a side view in the motor housing portion or the electric motor the electric motor is accommodated In this way, the first and second fuel injectors, which are attached to the first throttle body from the second throttle body side and inject fuel downstream from the second throttle valve in the direction perpendicular to the virtual plane, 2 It is attached to the second throttle body from the first throttle body side so as to be disposed between one end and the other end of the throttle body, and extends along the vehicle width direction of the electric motor. The other end wall of the other end portion or the motor housing portion along the vehicle width direction is the vehicle width direction at the intersection of the rotation axis of the first throttle valve and the inner surface of the first intake passage on the projection onto the horizontal plane. that is disposed between one side of the intersection and the first fuel injection valve and the second feature.

The present invention, in addition to the second feature, coupled to the first throttle body cylindrical case main forming a part of the motor receiving portion so as to open in the vehicle width direction on one side A first coil spring is housed in a housing case composed of the case main body and a cover member fastened to the case main body so as to close an outer end opening of the case main body, Of these, a case side fastening portion that protrudes toward the second throttle body from the cover member is integrally provided at an outer end portion of a portion that forms the motor housing portion, and is provided integrally with the second throttle body. that the connecting plate is fastened to the arm-type fastening portion and the case side engagement portion projecting on one side in the third aspect.

  The first connecting plate 11 of the embodiment corresponds to the connecting plate of the present invention.

According to the first aspect of the present invention, the electric motor is disposed between the first throttle body having the first intake passage and the second throttle body having the second intake passage. Compared to those outside the throttle body, the intake device can be made compact in the direction in which the first and second throttle bodies are arranged, and the electric motor, which is a heavy object, is placed in the center of the intake device in the arrangement direction. By arranging, the vibration of the intake device can be suppressed low. The central axis of the second intake passage on the projection drawing to a horizontal plane is offset from the center axis of the first intake passage on one side in the vehicle width direction, rotation of the first and second throttle valve in the projection drawing to the axis and the first and second internal displacement range in the vehicle width direction of the intersection of the vehicle on one widthwise side of the inner surface of the intake passage, at least a portion of the electric motor is arranged, side closes the first throttle valve the first coil spring is disposed in the vehicle width direction on one side of the first throttle body to be energized, the electric motor is disposed in the second coil spring for biasing the second throttle valve to the closing side is the vehicle width direction Since it is arranged on the side opposite to the second throttle body and on the side of the second throttle body, the intake device is made compact in the width direction of the vehicle and the intake device is arranged between the first and second banks of the V-type engine. The layout can be made easy. Moreover the fact that the first coil spring is disposed on the side of the vehicle width direction the one side is the side that the electric motor is arranged in a vehicle width direction of the first throttle body, the valve stem first throttle valve is provided The torsional deformation of the valve shaft due to the force acting from the first coil spring that biases the first throttle valve toward the closing side and the electric motor can be reduced. Further, since at least a part of the electric motor is disposed between one end and the other end of the first and second throttle bodies in a direction orthogonal to a virtual plane passing through the rotation axis of the first and second throttle valves, The intake device can be made compact in the intake flow direction of the second intake passage, and this also facilitates the layout for disposing the intake device between the first and second banks.

According to the second feature of the present invention, the first fuel injection valve for injecting fuel downstream from the first throttle valve and the second fuel injection valve for injecting fuel downstream from the second throttle valve are provided. The intake device is arranged between one end and the other end of the first and second throttle bodies in a direction orthogonal to a virtual plane passing through the rotation axis of the first and second throttle valves, and the first and second intake passages are arranged. It can be made compact in the direction of intake air flow. Further, since the first fuel injection valve is arranged so as to at least partially overlap the electric motor or the motor housing portion in a side view, the second fuel injection valve is arranged in the direction in which the first and second throttle bodies are arranged. By disposing it close to the housing portion, the intake device can be made compact in the direction in which the first and second throttle bodies are arranged. Further, the other end portion along the vehicle width direction of the electric motor or the other end wall along the vehicle width direction of the motor accommodating portion is formed on the rotation axis of the first throttle valve and the inner surface of the first intake passage on the projection onto the horizontal plane. disposed between the intersection the intersection of the inner wheel one widthwise side of the and the first fuel injection valve, a compact in the vehicle width direction of the intake system be arranged closer to the electric motor or motor housing portion to the first fuel injection valve The first fuel injection valve is attached to the first throttle body from the second throttle body side, and the second fuel injection valve is attached to the second throttle body from the first throttle body side. Compared to the case where at least one of the first and second fuel injection valves is attached to at least one of the throttle bodies from the opposite side, the intake device is connected in the direction in which the throttle bodies are aligned. It is possible to compact of.

Furthermore, according to the third feature of the present invention, there is provided a housing case in which a cylindrical case main body is coupled to the first throttle body so as to form a motor housing portion at a part thereof and houses the first coil spring. The cover member configured together with the case main body is fastened to the case main body so as to close the outer end opening of the case main body, and the cover member has a second outer end portion of the case main body that forms the motor housing portion than the cover member. case-side engagement portion projecting to the throttle body side is provided integrally connecting plate is fastened to the arm-type fastening part and the case-side engagement portion projecting on one side in the vehicle width direction is provided integrally with the second throttle body Runode, a simple structure is not necessary to protrude the first throttle body dedicated-arm fastening portion for fastening the connecting plate, the end portion of the vehicle on one widthwise side of the second throttle body to the horizontal plane of It can be accommodated in the vehicle width direction range up to the outer end of the cover member on the shadow, and the distance from the second throttle body to the case side fastening portion is short, and an electric motor is installed in the vicinity of the case side fastening portion. Since the motor accommodating portion to be accommodated is disposed, the vibration width of the electric motor and the motor accommodating portion due to the vibration of the vehicle body can be effectively suppressed by the second throttle body, and the connecting plate can be small.

It is a side view of the principal part of an engine main part, and an intake device. It is the figure which looked at the intake device from the 2 arrow direction of FIG. 1 in the state which notched the part. FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying FIGS.

  First, in FIG. 1, a motorcycle, which is a vehicle, is equipped with an engine main body 6 constituted by a V-type two-cylinder. The engine main body 6 is divided into a front and rear direction of the motorcycle and forms a V shape. The bank BA and the second bank BB are configured to be V-shaped.

  In the space between the first and second banks BA and BB of the engine body 6, a first throttle body 9A on the side of the first bank BA whose downstream end is connected to the cylinder head 7A of the first bank BA, and a second A second throttle body 9B on the second bank BB side whose downstream end is connected to the cylinder head 7B of the bank BB, and an air cleaner 10 whose upstream ends of the first and second throttle bodies 9A and 9B are connected in common are provided. An intake device 8 is arranged.

The first and second throttle bodies 9A, 9B are intended to be connected to each other, first and second throttle bodies 9A at one side along the vehicle width direction (the upper side in FIG. 2 in this embodiment), 9B Are connected to each other via a first connecting plate 11, and the first and second throttle bodies 9A and 9B are connected to the second connecting plate on the other side along the vehicle width direction (the lower side in FIG. 2 in this embodiment). 12 to each other.

  2 to 4 together, the opening of the first intake passage 13A of the first throttle body 9A is controlled by the first throttle valve 14A and crosses the first intake passage 13A. A first throttle valve 14A is fixed to a first valve shaft 15A that is rotatably supported on the body 9A. The opening degree of the second intake passage 13B of the second throttle body 9B is controlled by the second throttle valve 14B, and is rotatably supported by the second throttle body 9B across the second intake passage 13B. The second throttle valve 14B is fixed to the two valve shaft 15B. Thus, the first and second throttle bodies 9A and 9B connected to each other are the rotation axes T1 and T2 of the first and second throttle valves 14A and 14B, that is, the centers of the first and second valve shafts 15A and 15B. The first and second intake passages 13A and 13B are arranged between the first and second banks BA and BB so as to extend in the vertical direction while keeping the axis line along the vehicle width direction.

In addition, as clearly shown in FIG. 2, the first and second throttle bodies 9A and 9B are arranged so that the central axis C2 of the second intake passage 13B extends from the central axis C1 of the first intake passage 13A on the projection onto the horizontal plane. Arranged at one side of the direction.

  The first and second throttle valves 14A and 14B are driven by a single electric motor 16 common to the valves 14A and 14B. The electric motor 16 includes first and second throttle bodies 9A, 9B, and has a rotation axis MC parallel to the rotation axes T1 and T2 of the first and second throttle valves 14A and 14B, and is linked to and connected to the first and second throttle valves 14A and 14B.

  Further, at least a part (all in this embodiment) of the electric motor 16 is connected to a first virtual plane PL1 (see FIG. 3) passing through the rotation axes T1 and T2 of the first and second throttle valves 14A and 14B. The first and second throttle bodies 9A and 9B are disposed between one end and the other end in the orthogonal direction. In this embodiment, the first and second throttle bodies 9A and 9B are disposed between the upper and lower ends, that is, the first. And at least a part of the electric motor 16 between the first horizontal line HL1 passing through the upper ends of the second throttle bodies 9A and 9B and the second horizontal line HL2 passing through the lower ends of the first and second throttle bodies 9A and 9B (this embodiment) In all).

In addition, at least a part of the electric motor 16 (a part in this embodiment) is an intersection P1 between the rotation axis T1 of the first throttle valve 14A and the inner surface of the first intake passage 13A on the projection on the horizontal plane. the intersection point P1 of the vehicle on one widthwise side of the P2, the intersection of the vehicle on one widthwise side of the intersection point P3, P4 of the inner surface of the second throttle valve 14B in the rotation axis T2 and the second intake passage 13B P3 Is disposed within a shift range W1 in the vehicle width direction.

Motor the electric motor 16, which protrudes into the vehicle one widthwise side of the second throttle body 9B in projection drawing to a horizontal plane while being continuously provided to the first throttle body 9A in the vehicle width direction on one side It is accommodated in the accommodating part 17a.

The first throttle body 9A, a cylindrical case main 17 which forms a part of the motor housing portion 17a is in the first throttle body 9A so as to project in the vehicle width direction on one side for example fastening etc. The housing case 20 includes the case main body 17 and the cover member 18 that is fastened to the case main body 17 with a plurality of screw members 19, 19... So as to close the outer end opening of the case main body 17. Is done.

The accommodating case 20, and one end portion in the vehicle width direction on one side of the first valve shaft 15A is rush, between the electric motor 16 and the first valve shaft 15A which is accommodated in the motor housing portion 17a A reduction gear mechanism 22 is provided, and the reduction gear mechanism 22 is also housed in the housing case 20.

  Thus, as shown in FIG. 4, the reduction gear mechanism 22 includes a drive gear 24 fixed to the motor shaft 23 of the electric motor 16, a first idle gear 25 meshed with the drive gear 24, The first idle gear 25 includes a second idle gear 26 that rotates integrally with the second idle gear 26, and a sector gear 27 that is engaged with the second idle gear 26 and fixed to one end of the first valve shaft 15A. The idle gears 25 and 26 are rotatably supported by an idle shaft 28 provided between the case main body 17 and the cover member 18.

Moreover, the first throttle valve 14A is urged toward the closing side by a first coil spring 29 that is a torsion spring, and the first coil spring 29 provided between the housing case 20 and the sector gear 27 is a first valve shaft. It is accommodated in the accommodation case 20 so as to surround 15A. That first coil spring 29 is disposed in the vehicle width direction on one side of the first throttle body 9A.

  Referring to FIG. 4, the first straight line L1 connecting the rotation axis T1 of the first throttle valve 14A and the rotation axis MC of the electric motor 16 in a side view is a central axis C1 of the first intake passage 13A in the side view. Is inclined at an angle α from the cylinder head 7A side (the lower side in this embodiment) of the first bank BA to a second virtual plane PL2 passing through the rotation axis T1 of the first throttle valve 14A perpendicular to The rotation axis MC of the electric motor 16 is arranged in the cylinder head 7A (downward in this embodiment) of the first bank BA with respect to the second virtual plane PL2.

  The other end of the first valve shaft 15A protrudes from the first throttle body 9A on the other side in the vehicle width direction, and the first lever 31 is fixed to the other end of the first valve shaft 15A. One end of the second valve shaft 15B protrudes from the second throttle body 9B on the other side in the vehicle width direction, and a second lever 32 is provided at the protruding end of the second valve shaft 15B from the second throttle body 9B. Is fixed. Moreover, the second throttle valve 14B is urged toward the closing side by the second coil spring 30 that is a torsion spring, and the second coil spring 30 provided between the second lever 32 and the second throttle body 9B is Two valve shafts 15B are surrounded and arranged between the second lever 32 and the second throttle body 9B. That is, the second coil spring 30 is disposed on the side of the second throttle body 9B on the side opposite to the side on which the electric motor 16 is disposed in the vehicle width direction.

  One end of a link 33 is connected to the first lever 31 at a position deviated from the central axis of the first valve shaft 15A, and the first valve shaft 15A is connected between the other end of the link 33 and the second lever 32. An interlocking mechanism 34 is provided for rotating the second lever 32 and the second valve shaft 15B in conjunction with the longitudinal movement of the link 33 according to the rotation of the first lever 31.

A case-side fastening portion 35 that protrudes toward the second throttle body 9B from the cover member 18 at the outer end of the portion of the case main body 17 coupled to the first throttle body 9A that forms the motor housing portion 17a. There is provided integrally, the second throttle body 9B, for example, two-arm fastening portions 36 and 37 projecting to one side in the vehicle width direction is provided integrally with the arm-type fastening portions 36, 37 and the casing The first connecting plate 11 is fastened to the side fastening portion 35 with bolts 38, 38.

  The second connecting plate 12 is disposed so as to cover the first lever 31, the second lever 32, the link 33 and the interlocking mechanism 34 from the side, and is provided integrally with the first throttle body 9A. A pair of arm-type fastening portions 39, 40 projecting to the other side in the vehicle width direction, and a pair of arm-type fastening portions 41, 42 provided integrally with the second throttle body 9B and projecting to the other side in the vehicle width direction. The second connecting plate 12 is connected by bolts 43, 43.

  A first fuel injection valve 44A is attached to the first throttle body 9A from the second throttle body 9B side, and a second fuel injection valve 44B is attached to the second throttle body 9B from the first throttle body 9A side. The first fuel injection valve 44A has a central axis F1 that is orthogonal to the rotational axis T1 of the first throttle valve 14A and has a central axis F1 that passes through the central axis C1 of the first intake passage 13A on the projection onto the horizontal plane. The second fuel injection valve 44B is attached to the first throttle body 9A so as to inject fuel downstream of the throttle valve 14A. The second fuel injection valve 44B is orthogonal to the rotation axis T2 of the second throttle valve 14B on the projection view. In addition, fuel is injected downstream from the second throttle valve 14B while having a central axis F2 passing through the central axis C2 of the second intake passage 13B. It is attached to the throttle body 9B.

  In addition, the first fuel injection valve 44A includes the first and the first, while overlapping at least part of the electric motor 16 or the motor housing portion 17a (in this embodiment, the motor housing portion 17a) in a side view from the vehicle width direction. 2 between one end and the other end of the first and second throttle bodies 9A, 9B in the direction orthogonal to the first virtual plane PL1 passing through the rotation axes T1, T2 of the throttle valves 14A, 14B, that is, the first and second horizontal lines HL1. , HL2, and the second fuel injection valve 44B also extends between one end and the other end of the first and second throttle bodies 9A, 9B in the direction orthogonal to the first virtual plane PL1, that is, the first and second horizontal lines HL1, Arranged between HL2.

Further, the other end portion of the electric motor 16 along the vehicle width direction or the other end wall 17aa of the motor housing portion 17a along the vehicle width direction, in this embodiment, the other end wall 17aa of the motor housing portion 17a, as shown in Figure 2, the intersection of the vehicle on one widthwise side of the inner surface of intersection P1, P2 of the first throttle valve 14A of the rotation axis T1 and the first intake passage 13A on the projection drawing into a horizontal plane P1 and It arrange | positions in the width W2 between 44 A of 1st fuel injection valves.

The second fuel injection valve 44B, the first and second intake passages 13A, 13B central axis C1, C2 vehicle width direction on one side by a distance corresponding to the shift amount from the first fuel injection valve 44A in the vehicle width direction of the The common joint 45 having the fuel supply connecting pipe 46 is attached to the first and second fuel injection valves 44A and 44B.

  A fuel supply pipe 47 for supplying fuel from a fuel tank (not shown) to the first and second fuel injection valves 44A and 44B is connected to the fuel supply connection pipe 46.

  By the way, the second virtual plane PL2 that is orthogonal to the central axis C1 of the first intake passage 13A and passes through the rotation axis T1 of the first throttle valve 14A in a side view is disposed below the second virtual plane PL2. Based on the fact that the first straight line L1 connecting the rotation axis MC of the electric motor 16 and the rotation axis T1 of the first throttle valve 14A in a side view crosses at an angle α, the first and first 2 An empty space S is formed between the upper ends of the throttle bodies 9A and 9B adjacent to each other, the first connecting plate 11 and the upper end of the housing case 20, as shown by a chain line in FIG. The fuel supply pipe 47 is piped through the empty space.

  Next, the operation of this embodiment will be described. The electric motor 16 is disposed between the first throttle body 9A having the first intake passage 13A and the second throttle body 9B having the second intake passage 13B. Therefore, the intake device 8 can be made compact in the direction in which the first and second throttle bodies 9A and 9B are arranged as compared with the case where the electric motor 16 is outside the both throttle bodies 9A and 9B. By arranging a certain electric motor 16 in the center of the intake device 8 in the arrangement direction, vibration of the intake device 8 can be suppressed low.

Also are shifted to the second intake passage 13B central axis C2 of one side in the vehicle width direction from the center axis C1 of the first intake passage 13A on the projection drawing into a horizontal plane, the pivot axis of the first throttle valve 14A T1 and the intersection point P1 of the vehicle on one widthwise side of the intersection point P1, P2 of the inner surface of the first intake passage 13A, the intersection P3, P4 of the inner surface of the second throttle valve 14B in the rotation axis T2 and the second intake passage 13B among the said vehicle one widthwise side shift range W1 in the vehicle width direction between the intersection P3 of at least part of the electric motor 16 (a part in this embodiment) are arranged, the first throttle valve 14A The first coil spring 29 that urges the second throttle valve 14B toward the closing side is disposed on the side of the first throttle body 9A on the side where the electric motor 16 is disposed in the vehicle width direction, and urges the second throttle valve 14B toward the closing side. Second coil spring 30 Since the electric motor 16 is arranged on the side opposite to the side on which the electric motor 16 is arranged in the vehicle width direction and on the side of the second throttle body 9B, the intake device 8 is made compact in the vehicle width direction to reduce the size of the V-type engine. The layout for disposing the intake device 8 between the first and second banks BA and BB can be facilitated. Moreover, the first coil spring 29 is disposed on the side of the first throttle body 9A in the vehicle width direction on the side where the electric motor 16 is disposed, whereby the first valve shaft 15A provided with the first throttle valve 14A is The torsional deformation of the first valve shaft 15A due to the force acting on the first coil spring 29 and the electric motor 16 for biasing the first throttle valve 14A toward the closing side can be reduced or eliminated.

  In addition, between the one end and the other end of the first and second throttle bodies 9A and 9B in the direction orthogonal to the first virtual plane PL1 passing through the rotation axes T1 and T2 of the first and second throttle valves 14A and 14B, In the embodiment, at least part of the electric motor 16 is between the first horizontal line HL1 passing through the upper ends of the first and second throttle bodies 9A, 9B and the second horizontal line HL2 passing through the lower ends of the first and second throttle bodies 9A, 9B. Since (all in this embodiment) are arranged, the intake device 8 can be made compact in the intake flow direction of the first and second intake passages 13A, 13B, and this also makes the first and second banks BA , BB can be easily laid out when the intake device 8 is arranged.

  Further, the first fuel injection valve 44A has a central axis F1 that is orthogonal to the rotation axis T1 of the first throttle valve 14A and has a central axis F1 that passes through the central axis C1 of the first intake passage 13A on the projection onto the horizontal plane. Fuel is injected downstream of the throttle valve 14A, and the second fuel injection valve 44B is orthogonal to the rotational axis T2 of the second throttle valve 14B and has a central axis C2 of the second intake passage 13B on the projection. While maintaining the engine performance by the fuel injection of the first and second fuel injection valves 44A and 44B, fuel is injected downstream of the second throttle valve 14B while having the passing center axis F2. The first and second fuel injection valves 44A and 44B are in the direction orthogonal to the first virtual plane PL1 passing through the rotation axes T1 and T2 of the first and second throttle valves 14A and 14B. Ttorubodi 9A, can be made compact intake system 8 so as to be disposed between one end and the other end of 9B first and second intake passages 13A, the intake flow direction of 13B.

  Since the first fuel injection valve 44A is arranged so as to at least partially overlap the electric motor 16 or the motor housing portion 17a in a side view from the vehicle width direction, the second fuel injection valve 44B is connected to the first and second throttles. By arranging the body 9A, 9B close to the electric motor 16 or the motor housing portion 17a in the direction in which the bodies 9A, 9B are arranged, the intake device 8 can be made compact in the direction in which the first and second throttle bodies 9A, 9B are arranged.

Further, the other end portion along the vehicle width direction of the electric motor 16 or the other end wall 17aa along the vehicle width direction of the motor housing portion 17a (in this embodiment, the other end wall 17aa of the motor housing portion 17a) is projected onto the horizontal plane. drawing in is disposed between the first throttle valve 14A of the rotation axis T1 and the first intake passage 13A of the inner surface of intersection P1, P2 intersection of the inner wheel one widthwise side of the P1 and the first fuel injection valve 44A, the electric The intake device 8 can be made compact in the vehicle width direction by arranging the motor 16 or the motor housing portion 17a (in this embodiment, the motor housing portion 17a) close to the first fuel injection valve 44A. The first fuel injection valve 44A is attached to the first throttle body 9A from the second throttle body 9B side, and the second fuel injection valve 44B is attached to the second throttle body 9A from the first throttle body 9A side. Since the first and second fuel injection valves 44A and 44B are attached to the main body 9B, the throttle device 9 is connected to the throttle body 9a and 9B from the opposite side of the throttle body 9a and 9B. It can be made compact in the arrangement direction of the bodies 9A and 9B.

  Further, the first straight line L1 connecting the rotation axis T1 of the first throttle valve 14A and the rotation axis MC of the electric motor 16 in a side view from the vehicle width direction is the same as the central axis C1 of the first intake passage 13A in the side view. Crossing at an angle α from the cylinder head 7A side (the lower side in this embodiment) of the first bank BA to a second virtual plane PL2 orthogonally passing through the rotation axis T1 of the first throttle valve 14A. Therefore, it is possible to arrange the second fuel injection valve 44B close to the motor accommodating portion 17a using the space generated on the opposite side of the first straight line L1 with respect to the second virtual plane PL2, and the first and second The intake device 8 can be made compact in the direction in which the throttle bodies 9A and 9B are arranged.

A cylindrical case main body 17 is coupled to the first throttle body 9A so as to form a motor storage portion 17a at a part thereof, and the storage case 20 for storing the first coil spring 29 is configured together with the case main body 17. The cover member 18 is fastened to the case main body 17 so as to close the outer end opening of the case main body 17, and the cover member 18 is arranged at the outer end portion of the case main body 17 where the motor housing portion 17 a is formed. 2 case side engagement portion 35 which projects to the throttle body 9B side are provided integrally with a pair of arm-type fastening portions 36, 37 and example projecting one side vehicle width direction is provided integrally with the second throttle body 9B Since the first connecting plate 11 is fastened to the case side fastening portion 35, a dedicated arm-type fastening portion for fastening the first connecting plate 11 is provided on the first throttle body 9A. That there is no need in a simple structure, the vehicle width direction range to the outer end of the cover member 18 ends in the vehicle width direction on one side of the second throttle body 9B on the projection drawing into a horizontal plane, i.e. the cover member 18 It can be accommodated inwardly than the second straight line L2 extending forward and backward through the outer end, and the distance from the second throttle body 9B to the case side fastening part 35 is short, and in the vicinity of the case side fastening part 35 Since the motor housing portion 17a for housing the electric motor 16 is disposed, the vibration width of the electric motor 16 and the motor housing portion 17a due to the vibration of the vehicle body can be effectively suppressed by the second throttle body 9B. The first connecting plate 11 can also be small.

  Further, a fuel supply pipe 47 for supplying fuel to the first and second fuel injection valves 44A, 44B has an upper end portion on the side close to the first and second throttle bodies 9A, 9B in side view, a first connecting plate. 11 and the empty space S formed between the upper ends of the storage case 20, the fuel supply pipe 47 can be piped efficiently.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, in the above-described embodiment, the case where the V-type 2-cylinder engine main body 6 is mounted on the vehicle having the first and second banks BA and BB separated at the front and rear has been described. The mounting posture of the engine body on the vehicle is not limited as long as the rotation axis of the second throttle valves 14A and 14B is along the vehicle width direction.

6 ... Engine body 8 ... Intake device 9A ... 1st throttle body 9B ... 2nd throttle body 11 ... 1st connection plate 13A which is a connection plate ... 1st intake passage 13B .. second intake passage 14A ... first throttle valve 14B ... second throttle valve 16 ... electric motor 17 ... case main body 17a ... motor housing part 17aa ... vehicle in motor housing part The other end wall 18 along the width direction ... the cover member 20 ... the housing case 29 ... the first coil spring 30 ... the second coil spring 35 ... the case side fastening portions 36, 37 ... arms Mold fastening portion 44A ... first fuel injection valve 44B ... second fuel B injection valve BA ... first bank BB ... second bank C1 ... center axis C2 of first intake passage C ...・ Center axis MC of second intake passage ... Rotation of electric motor Lines P1, P2 ... Intersection point P1, P4 of the first throttle valve and the inner surface of the first intake passage P3, P4 ... Intersection point PL1 of the second throttle valve and the inner surface of the second intake passage · Virtual plane T1 · · · A rotation axis T2 of the first throttle valve · · · A rotation axis W1 of the second throttle valve · · · A deviation range in the vehicle width direction

Claims (3)

A first intake passage (13A) and a first intake passage (13A) are opened and closed between V-shaped first and second banks (BA, BB) provided in an engine body (6) mounted on a vehicle. The first throttle body (9A) having the first throttle valve (14A) and corresponding to the first bank (BA), and the second throttle for opening and closing the second intake passage (13B) and the second intake passage (13B) A second throttle body (9B) having a valve (14B) and corresponding to the second bank (BB) is connected to each other and the rotation axis of the first and second throttle valves (14A, 14B) ( T1 and T2) are arranged along the vehicle width direction, and the electric motor (16) that is common to the first and second throttle valves (14A, 14B) is connected to the first and second throttle valves (14A, 14B). Rotation axis ( 1, T2) and the first and second throttle valves have parallel axis of rotation (MC) (14A, linked to 14B), in the intake system of the V-type engine for a vehicle to be coupled,
The first and second throttle bodies (9A, 9B) are arranged so that the central axis (C2) of the second intake passage (13B) is separated from the central axis (C1) of the first intake passage (13A) on the projection onto the horizontal plane. Placed on one side in the width direction,
At least a part of the electric motor (16) disposed between the first and second throttle bodies (9A, 9B) has a rotation axis (T1) of the first throttle valve (14A) and first rotation axis (T2) and a second intake passage of the intersection of the vehicle on one widthwise side (P1) and the second throttle valve (14B) of the intersection of the inner surface (P1, P2) of the intake passage (13A) together are arranged in the deviation range (W1) in in said vehicle width direction between the intersection of the inner surface (P3, P4) the intersection of the vehicle on one widthwise side of the (P3) of (13B), first and second second throttle valve (14A, 14B) disposed between one end and the other end of the in the direction perpendicular to the virtual plane (PL1) passing through the rotation axis (T1, T2) of the first and second throttle bodies (9A, 9B) And
The first coil spring (29) is disposed in the vehicle width direction on one side of the first throttle body (9A) for biasing the first throttle valve (14A) to the closing side,
A second coil spring (30) that biases the second throttle valve (14B) toward the closing side is a second throttle body (9B) on the side opposite to the side where the electric motor (16) is disposed in the vehicle width direction. An intake device for a V-type engine for a vehicle, which is arranged on the side of the vehicle. A first fuel injection valve (44A) that injects fuel downstream of the first throttle valve (14A) is connected to the first throttle body (9A) on the other side in the vehicle width direction , and the electric motor The first and second throttle bodies (9A) in a direction orthogonal to the imaginary plane (PL1) while at least partly overlapping the motor accommodating portion (17a) accommodating the (16) or the electric motor (16) in a side view. , 9B) is attached to the first throttle body (9A) from the second throttle body (9B) side so as to be disposed between one end and the other end of the second throttle body (9B),
One end of the first and second throttle bodies (9A, 9B) in a direction in which the second fuel injection valve (44B) for injecting fuel downstream from the second throttle valve (14B) is orthogonal to the virtual plane (PL1). And attached to the second throttle body (9B) from the first throttle body (9A) side so as to be disposed between the other ends,
The other end portion of the electric motor (16) along the vehicle width direction or the other end wall (17aa) of the motor housing portion (17a) along the vehicle width direction is a first throttle valve on a projection on a horizontal plane. (14A) of the pivot axis (T1) and the first inner surface of the intersection of the intake passage (13A) intersections of said vehicle one widthwise side of (P1, P2) (P1) and a first fuel injection valve (44A) The vehicle V-type engine intake device according to claim 1, wherein the intake device is disposed between the two. Said cylindrical case main body (17) to form a motor housing portion (17a) in part been coupled to the first throttle body (9A) so as to open in the vehicle width direction on one side,
Inside the housing case (20) comprising the case main body (17) and a cover member (18) fastened to the case main body (17) so as to close the outer end opening of the case main body (17). The first coil spring (29) is housed in
A case side fastening portion (35) that protrudes toward the second throttle body (9B) from the cover member (18) at an outer end portion of the case main body (17) forming the motor housing portion (17a). Is provided integrally,
Coupling plate (11) is fastened to the arm-type fastening portions (36, 37) and said case side engagement portion (35) which is provided to protrude at one side in the vehicle width direction integrally with the second throttle body (9B) The vehicle V-type engine intake system according to claim 2.

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