JP2007177713A - Cover device for vehicular engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect an engine and parts arranged on a dash panel when excessive force acts from a front part biased to one side from obliquely front of a vehicle or a lateral direction center of a vehicle. <P>SOLUTION: In a cover device for a vehicular engine provided with a fuel filter on the dash panel and having accessories mounted at a position at the same height in a vehicle up-and-down direction as the fuel filter on a side surface facing the dash panel of the engine, and having the engine cover covering an upper part of the accessories, a cover mounting bracket supporting the engine cover is mounted on a rear part of the engine in a vehicle longitudinal direction, a stay extending in the vehicle lateral direction near the accessories is provided on the cover mounting bracket, and a protector covering a vehicle rear part of the accessories is installed on the stay. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle engine cover device, and more particularly to a vehicle engine cover device in which an engine and a transmission are mounted side by side in a vehicle width direction in an engine room at a front portion of the vehicle.

  Conventionally, a vehicle is formed with an engine room surrounded by a pair of side members on both sides in the vehicle width direction and surrounded by a dash panel at the front of the vehicle. Some have a power train connected to the aircraft so that the output shaft extends in the vehicle width direction. Some vehicles include a cover device in which an engine cover that covers the engine is attached to an upper portion of the engine.

A conventional vehicle engine cover device includes a support mechanism that is provided on the inner side of the engine room and that is detachably engaged with one end of the engine cover and that can rotate the engine cover around the engagement point. And a fastening mechanism that is provided on the near side in the engine room and fastens the other end of the engine cover to the engine to improve working efficiency.
JP 2004-132219 A

Further, in the protection device for auxiliary equipment arranged on the side of the engine, a fuel pump in which one end of a rigid member is fixed to an engine mounted horizontally and the other end of the rigid member is arranged on the front side of the engine There is one that extends to the front side of the fuel tank and protects the fuel pump from impact from the front side by this rigid member.
Japanese Patent Laid-Open No. 11-210488

By the way, in the engine room in the front part of the vehicle, a power train connecting the engine and the transmission is arranged so that its output shaft extends in the vehicle width direction, and components such as a fuel filter and a brake booster are arranged on the dash panel. An engine cover for covering the upper side of the auxiliary equipment is provided on the side facing the dash panel of the engine with engine accessories such as fuel pipes and EGR valves at the same height in the vehicle vertical direction. In the vehicle engine cover device attached to the engine, one of the left and right side members is applied when an excessive force is applied from diagonally forward of the vehicle or from the front deviated to one side from the center in the width direction of the vehicle. Is greatly deformed with respect to the other, and the positions of the left and right mounts supporting the engine are relatively shifted in the vehicle front-rear direction.
The power train moves toward the dash panel obliquely behind the vehicle with the output shaft inclined with respect to the vehicle width direction. At this time, there is a possibility that the protruding part of the auxiliary machine arranged on the engine side toward the rear of the vehicle strongly interferes with the fuel filter arranged on the dash panel side obliquely behind the vehicle.

  In this vehicle engine cover device in which an engine cover that covers the upper side of the engine is attached to the engine, an excessive force is applied from an obliquely forward side of the vehicle or from the front side deviated to one side from the center in the width direction of the vehicle. The purpose is to protect the parts arranged on the engine and the dash panel.

  The present invention forms an engine room surrounded by a pair of side members on both sides in the vehicle width direction and surrounded by a dash panel at the front of the vehicle, and the engine and the transmission are connected in the engine room. The power train is mounted so that the output shaft extends in the vehicle width direction, and both sides of the power train in the vehicle width direction are supported by the side member via the left mount and the right mount, respectively, and the fuel is mounted on the dash panel. While the filter is disposed, an auxiliary machine is mounted at the same height in the vehicle vertical direction as the fuel filter on the side facing the dash panel of the engine, and an engine cover covering the upper side of the auxiliary machine is attached to the engine. In a vehicle engine cover device attached, a cover mounting bracket for supporting the engine cover is provided on the engine. Attached to the rear in the vehicle longitudinal direction, the stay extending in the vicinity of the accessory to the cover mounting bracket in the width direction of the vehicle is provided, characterized by being fitted with a protector for covering the vehicle rear side of the accessory to the stay.

  According to the vehicle engine cover device of the present invention, the protruding portion of the auxiliary machine at a position that easily interferes with the fuel filter is covered with a protector mounted on the stay of the cover mounting bracket, so When an excessive force is applied from the front biased to either side from the direction center, it is possible to prevent the protruding portion of the auxiliary device from directly interfering with the fuel filter at the same height in the vehicle vertical direction. As a result, the vehicle engine cover device can protect the fuel filter by using the cover mounting bracket of the engine cover.

The cover device for a vehicle engine according to the present invention provides an engine-side auxiliary to the stay of the cover mounting bracket when an excessive force is applied from an obliquely forward direction of the vehicle or a forward direction biased to any one side from the center in the width direction of the vehicle. The fuel filter can be protected by mounting a protector that covers the protruding portion of the machine.
Embodiments of the present invention will be described below with reference to the drawings.

1 to 7 show an embodiment of the present invention. 1 is a plan view of an engine room of a vehicle showing the present invention, FIG. 2 is a rear plan view of the engine room, FIG. 3 is a left side view of the engine room, and FIG. 4 is a rear view of the engine through a dash panel. 5 is a rear view of the engine showing components mounted on the engine, FIG. 6 is a plan view of the engine showing components mounted on the engine, and FIG. 7 is a perspective view showing an engine cover mounting structure.
As shown in FIG. 1, a vehicle 1 as an object of the present invention has a front bumper 2 disposed at the front portion of the vehicle 1, and an engine room 3 is formed behind the front bumper 2. The engine room 3 is formed by being surrounded by a pair of left and right side members 4 and 5 extending in the vehicle longitudinal direction on both sides in the vehicle width direction and surrounded by a dash panel 6 extending in the vehicle width direction on the rear side of the vehicle. In the engine room 3, a power train 9 in which a vehicle engine (hereinafter referred to as "engine") 7 and a transmission 8 are connected, and an output shaft 10 (see FIG. 3) extends in the vehicle width direction. It is mounted as follows. The power train 9 is supported by the left and right side members 4 and 5 via a left mount 11 and a right mount 12, respectively, on both sides in the vehicle width direction.
In the engine train 3, the power train 9 has an engine 7 disposed on the right side in the vehicle width direction and a transmission 8 disposed on the left side in the vehicle width direction. The engine 7 is longer in the vehicle width direction than the transmission 8 and extends from the right side to the left side over a vehicle center line C extending in the vehicle front-rear direction.

As shown in FIGS. 2 and 3, the engine 7 has a cylinder head 14 attached to the upper part of the cylinder block 13, a cylinder head cover 15 attached to the upper part of the cylinder head 14, and an oil pan 16 attached to the lower part of the cylinder block 13. Yes. A transmission 8 is attached to the lower left side of the cylinder block 13 and the left side of the oil pan 16.
An exhaust manifold 17 as an exhaust system component is attached to the engine 7 on the front side of the vehicle. The exhaust system parts sequentially connect the turbocharger 18, the exhaust pipe 19, the catalytic converter 20, and the rear exhaust pipe from the exhaust manifold 17 toward the downstream side. On the other hand, an intake manifold 21 as an intake system component is attached to the engine 7 on the rear side of the vehicle. As shown in FIG. 1, the intake system components are, in order from the upstream side, an intake duct 22, an air cleaner 23, an intake hose 24, a turbo inlet duct 25, the turbocharger 18, an intercooler linelet pipe 26, an intercooler 27, and an intercooler. The outlet pipe 28 and the shutter valve 29 are connected, and the shutter valve 29 is connected to the left side of the intake manifold 21.
As shown in FIG. 6, the intake manifold 21 is formed with a mounting portion 30 projecting toward the rear of the vehicle on the rear side in the vicinity of the shutter valve 29, and an EGR valve 31 is mounted on the mounting portion 30 with mounting bolts 32. ing. When the EGR valve 31 is attached to the attachment portion 30, the bolt head 33 projects from the EGR valve 31 toward the rear of the vehicle. As shown in FIG. 3, the EGR valve 31 connects the EGR inlet pulp 34 connected to the lower side to the exhaust manifold 17 on the front side of the cylinder head 14 through the left side of the cylinder block 13 above the transmission 8, and the EGR outlet connected to the left side. A pipe 35 is connected to the rear side of the shutter valve 29.

In this vehicle 1, as shown in FIGS. 2 and 3, a fuel filter 36 of a fuel device is disposed on the dash panel 6. The fuel filter 36 is attached to the dash panel 6 via a filter bracket 37. The fuel filter 36 includes a filter inlet side connecting portion 39 on the upper surface of a substantially cylindrical filter main body 38, and a filter outlet side connecting portion 40 on the side surface of the filter main body 38.
A fuel supply vehicle body side hose 41 is connected to the filter inlet side connection portion 39. A fuel supply vehicle body side pipe for supplying fuel from the fuel tank is connected to the fuel supply vehicle body side hose 41. A fuel supply filter side hose 42 is connected to the filter outlet side connection part 40. The fuel supply filter side hose 42 is connected to the fuel supply pipe 43. A fuel supply engine side hose 44 is connected to the fuel supply pipe 43. The fuel supply engine side hose 44 is connected to a fuel pump 45 attached to the rear side and the right side of the intake manifold 21.
As shown in FIGS. 4 to 6, the fuel pump 45 is connected to a common rail 47 attached to the rear side of the intake manifold 21 below the fuel pump 45 and on the left side by a pressure feed pipe 46. The common rail 47 is connected to each fuel injection valve 49 attached to the upper part of the cylinder head 14 via a fuel distribution pipe 48. Each fuel injection valve 49 directly injects fuel into the cylinder.
A collection pipe 50 that collects surplus fuel is connected to each fuel injection valve 49. The collecting pipe 50 is connected to a fuel chamber 52 attached to the rear side of the intake manifold 21 above the fuel pump 45 by a collecting pipe 51. A resin fuel connector 55 of the fuel return engine side hose 54 is joined to the connector joint 53 of the fuel chamber 52. The fuel return engine side hose 54 is connected to the fuel return pipe 56. A fuel return vehicle side hose 57 is connected to the fuel return pipe 56. The fuel return body side hose 57 is connected to a fuel return body side pipe for returning the fuel to the fuel tank.

As shown in FIG. 1, an engine cover 59 of a cover device 58 covers the cylinder head cover 15, the intake manifold 21, the EGR valve 31, and the fuel chamber 52 when viewed from above the vehicle. Is attached. As shown in FIG. 3, the engine cover 59 is attached to the engine 7 on the front side of the vehicle via the front cover mounting bracket 60, and is attached to the engine 7 on the rear side of the vehicle via the rear cover mounting bracket 61. Further, as shown in FIG. 4, an alternator 62 as an auxiliary machine part is attached to the engine 7 on the rear side and the right side of the cylinder block 13.
Further, in the engine room 3 space around the engine 7 and the transmission 8, as shown in FIG. 1, as an auxiliary part for the engine 7 and the vehicle 1, Right head lamps 63 and 64 are disposed, and radiators such as the intercooler 27, the air conditioner condenser 65 of the air conditioner, and the radiator 66 of the cooling apparatus are disposed on the vehicle rear side at the center position of the front bumper 2. A battery 67 is disposed at a position covering the top of the transmission 8. Furthermore, the dash panel 6 includes the fuel filter 36 as an auxiliary part for the engine 7 and the vehicle 1, a fuel supply pipe 43 and a fuel return pipe 56 that are fuel pipes downstream from the fuel filter 36, Auxiliary parts such as the brake booster 68 of the braking device are disposed. As shown in FIG. 2, a booster side negative pressure hose 69, a negative pressure pipe 70, and an engine side negative pressure hose 71 are sequentially connected to the brake booster 68 to introduce intake negative pressure.
As shown in FIG. 1, the dash panel 6 is provided with a brake booster 68 on the right side in the vehicle width direction, and on the left side of the brake booster 68 with a space 72 in the vehicle width direction. A fuel filter 36 is disposed through the. The brake booster 68 is located immediately behind the engine 7 in the vehicle longitudinal direction. The fuel filter 36 is located behind a space 73 formed between the left end portion of the engine 7 in the vehicle width direction and the battery 67. As shown in FIG. 2, the fuel supply pipe 43 and the fuel return pipe 56 are connected together by a connecting member 74 together with the negative pressure pipe 70 to be integrated into a concentrated pipe, and are attached to the dash panel 6 via a pipe bracket 75. .
On the other hand, an EGR valve 31 of an auxiliary machine is attached by a mounting bolt 32 at the same height as the fuel filter 36 on the side facing the dash panel 6 of the engine 7 in the vehicle vertical direction, as shown in FIG. . The mounting bolt 32 has a bolt head 33 protruding rearward from the EGR valve 31. The EGR valve 31 is covered with an engine cover 59 attached to the engine 7.

By the way, as shown in FIG. 1, in the vehicle 1, when an object 76 is in strong contact with the left front part or the right front part shifted from the center in the vehicle width direction and an excessive force is applied, the speed is changed in the vehicle width direction. The action of excessive force on the side where the machine 8 is arranged (left front part) and the action of excessive force on the side where the engine 7 is arranged (right front part) can be considered.
In the vehicle 1, since the fuel filter 36 is disposed at the position as described above, the action of the excessive force on the right front portion of the vehicle is greater than the action of the excessive force on the left front portion of the vehicle. The effect on 36 is increased.
The reason is as follows.
When an excessive force is applied from diagonally forward of the vehicle 1 or from the front deviated to one side from the center in the vehicle width direction, one of the left and right side members 4 and 5 is greatly deformed with respect to the other, and the left The positions of the right mounts 11 and 12 are relatively shifted in the vehicle front-rear direction. And the power train 9 moves to the dash panel 6 side with the output shaft 10 inclined with respect to the vehicle width direction.
For example, when an excessive force is applied to the left front portion of the vehicle 1, the engine 7 moves diagonally to the right rear of the vehicle 1 and moves away from the fuel filter 36. Therefore, in this case, the possibility that the engine 7 strongly interferes with the fuel filter 36 is low. In this case, the battery 67 also moves to the rear of the vehicle, but a large space 77 is secured between the fuel filter 36 and the battery 67, and strong interference with the fuel filter 36 of the battery 67 can be avoided. it can.
On the other hand, when an excessive force is applied to the right front portion of the vehicle 1, the engine 7 moves diagonally to the left of the vehicle 1 (in the direction of arrow A in FIG. 1). There is a possibility that the EGR valve 31 of the auxiliary machine attached to the side opposite to 6 strongly interferes with the fuel filter 36 disposed on the dash panel 6. Further, since the bolt head 33 of the mounting bolt 32 protrudes from the EGR valve 31 toward the rear of the vehicle, the protruding bolt head 33 may affect the fuel filter 36. Further, the fuel pipe attached to the side of the engine 7 facing the dash panel 6 is provided with a fuel chamber 52, and a resin fuel connector 55 connected to the fuel chamber 52 is disposed on the dash panel 6 side. There is a risk of strong interference with the fuel supply pipe 43 and the fuel return pipe 56 of the fuel pipe.
Therefore, after this embodiment, an explanation will be made focusing on the action of an excessive force due to the strong contact of the object 76 from the direction of the arrow B to the right front portion of the vehicle 1.

Therefore, as shown in FIG. 7, the cover device 58 of the engine 7 has a front cover mounting bracket 60 that supports the vehicle front side of the engine cover 59 attached to the front part of the engine 7 in the vehicle front-rear direction. A rear cover mounting bracket 61 that supports the rear side is attached to the rear portion of the engine 7 in the vehicle front-rear direction.
In the front cover mounting bracket 60, a left front engine mounting portion 78, a left front bracket mounting portion 79, a right front engine mounting portion 80, and a right front bracket mounting portion 81 are integrally formed of a plate material. The front cover mounting bracket 60 mounts the left front engine mounting portion 78 and the right front engine mounting portion 80 to the engine 7, and the front front of the engine cover 59 on the left front bracket mounting portion 79 and the right front bracket mounting portion 81 is left front. It is supported by the side support bolt 82 and the right front support bolt 83.
The rear cover mounting bracket 61 has a left rear bracket mounting portion 85 fixed to a left rear engine mounting portion 84 attached to the left rear side of the engine 7 and a left end fixed to the left rear engine mounting portion plate member 84 to provide EGR. A stay 86 extending in the width direction of the vehicle 1 to the right in the width direction of the vehicle 1 and passing behind the fuel connector 55 is provided. A right rear engine mounting portion 87 attached to the right rear side of the engine 7 is provided at the right end of the stay 86. At the same time, a right rear bracket mounting portion 88 is fixed near the right end of the stay 86. A protector 89 that covers the vehicle rear side of the EGR valve 31 is attached to the stay 86. The rear cover mounting bracket 61 has a left rear engine mounting portion 84 and a right rear engine mounting portion 87 mounted to the engine 7 with a left rear mounting bolt 90 and a right rear mounting bolt 91, and a left rear bracket mounting. The vehicle rear side of the engine cover 59 is supported by the left rear support bolt 92 and the right rear support bolt 93 on the portion 85 and the right rear bracket mounting portion 88.

Thus, as shown in FIG. 3, the cover device 58 of the engine 7 has a bolt head 33 that is a protruding part from the EGR valve 31 of the auxiliary machine located at a position where it easily interferes with the fuel filter 36 to the rear of the vehicle. By covering with the protector 89 attached to the stay 86 of the rear cover mounting bracket 61, an excessive force is applied from the diagonally forward side of the vehicle 1 or from the front side biased to one side from the center in the width direction of the vehicle 1. At this time, it is possible to prevent the bolt head 33 of the protruding portion of the EGR valve 31 from directly interfering with the fuel filter 36 at a position where the height overlaps in the vehicle vertical direction.
As a result, the cover device 58 can protect the fuel filter 36 by using the rear cover mounting bracket 61 of the engine cover 59.

The cover device 58 of the engine 7 includes a fuel chamber 52 of a fuel pipe disposed at a position facing the dash panel 6 in the upper part of the engine 7, and is made of a resin that is joined to a connector joint 53 of the fuel chamber 52. The fuel connector 55 is provided so that the rear side of the fuel connector 55 is covered with a stay 86 of the rear cover mounting bracket 61.
As a result, if the cover device 58 is made of resin as the fuel connector 55 to be joined to the connector joint 53 of the fuel chamber 52, the assemblability is improved, but protection is provided when an excessive force is applied. Although it was necessary to consider, by using a resin connector for the fuel connector 55 to be joined to the connector joint 53 of the fuel chamber 52 between the engine 7 and the dash panel 6, The assembly workability of the fuel pipe can be improved, and even when an excessive force is applied from the diagonally forward direction of the vehicle 1 or the forward direction biased to any one side from the center in the width direction of the vehicle 1, the rear side The resin fuel connector 55 can be protected by the stay 86 of the cover mounting bracket 61.

Further, as shown in FIG. 2, the cover device 58 of the engine 7 causes the protector 89 to protrude rearward from the stay 86 in the vehicle front-rear direction, and the stay 86 is higher than the top of the fuel filter 36 in the vertical direction of the vehicle 1. Arranged in position.
As a result, the cover device 58 is provided with a stay 86 having a rigidity higher than that of the protector 89 when an excessive force is applied from an obliquely forward direction of the vehicle 1 or a forward direction biased to any one side from the center in the width direction of the vehicle 1. Can be prevented from interfering with the fuel filter 36, and the fuel filter 36 can be protected.

As shown in FIGS. 2 and 3, the fuel device of the engine 7 includes a fuel pipe downstream of the fuel filter 36 in a space 72 surrounded by the brake booster 68 and the filter bracket 37 on both sides in the vehicle width direction. A fuel supply pipe 43 and a fuel return pipe 56 are provided, and the fuel outlet 36 is connected between the filter outlet side connection portion 40 of the fuel filter 36 and the fuel supply pipe 43 of the fuel pipe by the fuel supply filter side hose 42. The fuel return vehicle body side hose 57 is connected to the fuel inlet 36, and the fuel supply vehicle body side hose 41 is connected to the filter inlet side connection portion 39 of the fuel filter 36.
The fuel supply filter side hose 42 extends slightly upward from the filter outlet side connection portion 40 of the fuel filter 36 directed to the left outer side of the vehicle 1, and then obliquely forward to the right of the vehicle 1. And extends along the left front portion of the fuel filter 36. Then, the vehicle 1 bends obliquely rearward to the right, extends along the filter bracket 37, and is connected to the fuel supply pipe 43.
On the other hand, the fuel return vehicle body side hose 57 slightly extends obliquely downward to the left of the vehicle 1 from a fuel return pipe 56 directed outwardly to the left of the vehicle 1. Then, the vehicle 1 bends obliquely downward to the right and is connected to the fuel return body side pipe of the fuel tank.
Further, the fuel supply vehicle body side hose 41 extends slightly from the filter inlet side connection part 39 of the fuel filter 36 directed to the left outer side of the vehicle 1 toward the front of the vehicle 1, and then the right side of the vehicle 1. It bends diagonally forward and extends along the left front portion of the fuel filter 36. Then, the vehicle 1 is bent toward the diagonally right rear and extends along the filter bracket 37. Next, the vehicle 1 is bent toward the rear lower side, dives below the fuel return pipe 56, extends to the lower left side of the vehicle 1, and is connected to the fuel supply vehicle body side pipe of the fuel tank.
In this way, the cover device 58 is provided with the fuel supply pipe 43 and the fuel return pipe 56 of the fuel pipe by bending the fuel supply filter side hose 42, the fuel return body side hose 57, and the fuel supply body side hose 41. When 7 interferes, the fuel supply filter side hose 42, the fuel return vehicle side hose 57, and the fuel supply vehicle side hose 41 can be freely deformed and protected.

  The vehicle engine cover device according to the present invention has a dash panel that protrudes from a protruding portion of an auxiliary device on the engine side when an excessive force is applied from an obliquely forward side of the vehicle or a front side that is biased to one side in the width direction of the vehicle. The fuel filter on the side can be protected, and can be applied to a vehicle in which components are arranged on the engine and the dash panel.

It is a top view of the engine room of the vehicle which shows an Example. It is a rear part top view of the engine room which shows an Example. It is a left view of the engine room which shows an Example. It is the rear view of the engine which saw through the dash panel which shows an Example. It is a rear view of the engine which shows an Example. It is a top view of the engine which shows an Example. It is a perspective view which shows the attachment structure of the engine cover which shows an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Front bumper 3 Engine room 4/5 Left / right side member 6 Dash panel 7 Engine 8 Transmission 9 Power train 10 Output shaft 11/12 Left / right mount 31 EGR valve 33 Bolt head 36 Fuel filter 37 Filter bracket 52 Fuel Chamber 53 Connector Joint 55 Fuel Connector 58 Cover Device 59 Engine Cover 60 Front Cover Mounting Bracket 61 Rear Cover Mounting Bracket 86 Stay 89 Protector

Claims (3)

  An engine room surrounded by a pair of side members on both sides in the vehicle width direction and surrounded by a dash panel at the rear of the vehicle is formed at the front of the vehicle, and a power train that connects the engine and the transmission is installed in the engine room. The output shaft is mounted so as to extend in the vehicle width direction, both sides of the power train in the vehicle width direction are supported by the side member via the left mount and the right mount, respectively, and the fuel filter is disposed on the dash panel On the other hand, an auxiliary machine is mounted on the side of the engine facing the dash panel at the same height as the fuel filter in the vertical direction of the vehicle, and an engine cover that covers the upper side of the auxiliary machine is mounted on the engine. In the engine cover device, a cover mounting bracket for supporting the engine cover may be provided at the front and rear of the engine. The vehicle mounting engine is characterized in that a stay extending in the width direction of the vehicle is provided on the cover mounting bracket in the cover mounting bracket, and a protector that covers the rear of the auxiliary machine is mounted on the stay. Cover device.   A fuel pipe is provided at a position opposite to the dash panel at the upper part of the engine, a resin fuel connector to be joined to a connector joint portion of the fuel pipe is provided, and the rear of the fuel connector is covered with the stay. The vehicle engine cover device according to claim 1, which is configured as described above.   2. The vehicle engine according to claim 1, wherein the protector protrudes rearward from the stay in the vehicle front-rear direction, and the stay is disposed at a position higher than the top of the fuel filter in the vehicle vertical direction. Cover device.

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