JP2008273372A - Reducer tank arranging structure in vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reducer tank arranging structure capable of effectively arranging a reducer tank additionally provided in a vehicle. <P>SOLUTION: A urea tank 1 is arranged on the outside in the vehicle cross direction of a rear side frame 10 constituting the vehicle body V, more concretely, between a side panel inner 3a and a side panel outer 3b of a side panel 3 arranged on the outside in the vehicle cross direction of the rear side frame 10. Consequently, it is possible to arrange the urea tank 1 additionally provided in the vehicle V by using a dead space on the outside in the vehicle cross direction of the rear side frame 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an arrangement structure of a reducing agent tank mounted on a vehicle for exhaust gas purification in a vehicle.

  In recent years, particulate matter (PM) and nitrogen oxides (NOx) contained in exhaust gas discharged from internal combustion engines such as diesel engines have been regulated in terms of environmental pollution such as acid rain and photochemical smog. The movement to do is increasing.

  Therefore, a reducing agent such as an aqueous urea solution is injected and supplied to the exhaust system of the internal combustion engine to reduce and purify particulate matter and nitrogen oxides contained in the exhaust gas.

The following Patent Document 1 discloses a structure in which a reducing agent storage unit (tank) storing a reducing agent is disposed in a vehicle. In Patent Document 1, the reducing agent storage unit is integrated with a fuel storage unit (tank). It has become.
Special Table 2000-512245

  However, in an actual vehicle, it is not easy to newly provide an additional member such as a reducing agent tank due to layout restrictions and the like.

  An object of this invention is to provide the reducing agent tank arrangement | positioning structure which can arrange | position the reducing agent tank additionally provided with respect to a vehicle effectively.

  A reducing agent tank arrangement structure in a vehicle of the present invention is an arrangement structure of a reducing agent tank mounted on a vehicle for purifying exhaust gas in the vehicle, and the reducing agent tank is disposed outside a frame member constituting the vehicle body. It is arranged.

  According to this structure, the reducing agent tank additionally provided with respect to a vehicle can be effectively arrange | positioned using the dead space outside the vehicle of the frame member which comprises a vehicle body.

  In one embodiment of the present invention, as the frame member, a side frame extending in the vehicle front-rear direction at both sides in the vehicle width direction is provided, and a side panel of the vehicle body is disposed outside the side frame in the vehicle width direction, The reducing agent tank is disposed between a side panel inner and a side panel outer constituting the side panel.

  According to this structure, the said reducing agent tank can be effectively arrange | positioned using the dead space between the side panel inner and side panel outer which comprise a side panel.

  In one embodiment of the present invention, the side frame is a rear side frame, and the reducing agent tank is formed with a volume expanding portion that expands the volume inward in the vehicle width direction below the vehicle body floor behind the tire house. It is a thing.

  According to this structure, the capacity | capacitance of the said reducing agent tank can be ensured using the space enclosed by the vehicle body floor, the side panel outer, and the rear side frame.

  In one embodiment of the present invention, an inlet for supplying fuel to a fuel tank and an inlet for supplying a reducing agent to the reducing agent tank are disposed close to each other, and both the inlets are provided. Are configured to open and close with a common lid.

  According to this configuration, it is not necessary to separately provide a lid corresponding to the inlet to which the reducing agent is supplied.

  In one embodiment of the present invention, the vehicle is a truck type vehicle.

  In a truck-type vehicle, a range where an in-vehicle device is arranged or a harness is routed is mainly the front part of the vehicle, and therefore a dead space is easily formed in the rear part of the vehicle. According to this configuration, the reducing agent tank can be easily disposed by the dead space at the rear of the vehicle.

  According to this invention, the reducing agent tank additionally provided with respect to a vehicle can be effectively arrange | positioned using the dead space of the vehicle exterior of the frame member which comprises a vehicle body.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an arrangement structure of a urea tank 1 according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a main part showing the periphery of the urea tank 1 in an enlarged manner, and FIG. It is AA sectional view taken on the line. In the figure, the arrow (IN) indicates the inside of the vehicle, and the arrow (OUT) indicates the outside of the vehicle.

  A vehicle V shown in FIG. 1 is a so-called pickup truck, and in this embodiment, a urea tank 1 storing a urea aqueous solution X (see FIG. 3) as a reducing agent is disposed on the side of a loading platform 2 provided at the rear of the vehicle. Arranged inside the side panel 3.

  Urea is a substance that easily generates ammonia by hydrolysis, and the urea aqueous solution X has been conventionally used as a reducing agent for reducing and purifying particulate substances and nitrogen oxides contained in exhaust gas.

  Also in the vehicle V, the urea aqueous solution X is stored in the urea tank 1 to be injected and supplied into exhaust gas discharged from an internal combustion engine such as a diesel engine, and undergoes a reduction reaction in the catalyst with nitrogen oxides in the exhaust gas. Thus, the nitrogen oxides are purified to harmless components.

  Incidentally, in the vehicle V, side panels 3 and 3 extend from both sides of the rear end of the cabin 4 at the front of the vehicle toward the rear of the vehicle. The urea tank 1 has a longitudinal direction corresponding to the side panel 3. It arrange | positions so that it may face the vehicle front-back direction. In the illustrated one, the rear end is located near the rear end of the vehicle V, and the front end extends to the position of the tire house 5 that covers the rear wheel W. The urea tank 1 is formed with an arc-shaped notch 1a for avoiding interference with the tire house 5 at the front lower portion thereof.

  Further, the urea tank 1 is formed with a volume expanding portion 1b whose volume is increased inward in the vehicle width direction below the floor panel 2a of the loading platform 2 at the rear of the tire house 5. A part of the tank 1 also extends inward in the vehicle width direction.

  In the present embodiment, the urea tank 1 is disposed only on one side panel 3, and in addition to the urea tank 1, a fuel pipe 6 a and a urea pipe 6 b described later are provided on the one side panel 3. The inlets 6a1 and 6b1 and a lid 7 that covers them in common are disposed away from the front end of the urea tank 1 in front of the vehicle.

  As shown in FIGS. 2 and 3, the side panel 3 includes a side panel inner 3a, a side panel outer 3b that covers the outside of the side panel inner 3a, and a stiffener 3d that forms a closed section 3c by the side panel inner 3a. The urea tank 1 is configured such that the first fastening piece 1c formed at the upper end of the urea tank 1 is fastened to the outer surface of the side panel inner 3a by bolts 8a and 8b, whereby the side panel inner 3a and the side panel outer 3b. It is being fixed to the predetermined position between.

  Further, in the urea tank 1, a reverse L-shaped second fastening piece 1d formed at the inner end of the volume expanding portion 1b is fastened to the lower end of the cross member 9 by a bolt 8c. The lower part including the part 1b is stably supported.

  Both ends of the cross member 9 in the vehicle width direction are joined to a pair of rear side frames 10 and 10 (only one is shown in FIGS. 2 and 3), respectively, and is installed between the rear side frames 10 and 10. It has become.

  The rear side frame 10 is one of the frame members constituting the vehicle body, and extends in the vehicle front-rear direction at both sides in the vehicle width direction of the vehicle V. In the present embodiment, the side panel 3 is located outside the rear side frame 10 in the vehicle width direction, so that the urea tank 1 is located outside the rear side frame 10 in the vehicle width direction.

  Conventionally, in the rear portion of the vehicle V, since there are not many in-vehicle devices, harnesses, and the like, an area outside the rear side frame 10 in the vehicle width direction is a dead space.

  In this embodiment, since the urea tank 1 is disposed outside the rear side frame 10, the urea tank 1 provided additionally to the vehicle V is utilized by utilizing the space that should be a dead space. It can arrange | position effectively.

  In particular, in a region outside the rear side frame 10 in the vehicle width direction, a space extending long upward is formed between the side panel inner 3a and the side panel outer 3b. Therefore, as in the present embodiment, by arranging the urea tank 1 between the side panel inner 3a and the side panel outer 3b, the urea tank 1 can be used by utilizing a dead space that extends long (widely) upward. It can arrange | position more effectively.

  Further, in the case of a truck type vehicle such as the vehicle V, the range in which the in-vehicle device is disposed or the harness is routed is mainly the front portion of the vehicle V including the cabin 4 (see FIG. 1). . For this reason, the vehicle width direction outside region of the rear side frame 10 at the rear of the vehicle V is likely to become a dead space. Therefore, in the truck type vehicle V, the urea tank 1 can be easily disposed.

  Conventionally, not only between the side panel inner 3a and the side panel outer 3b, but also behind the tire house 5, the space surrounded by the floor panel 2a, the side panel outer 3b, and the rear side frame 10 is also a dead space. It was.

  Therefore, in the present embodiment, the volume expanding portion 1b is formed so as to extend inward in the vehicle width direction from the lower end of the side panel 3a as shown in FIG. 3, and is positioned in the space. In this case, the capacity of the urea tank 1 can be secured by utilizing the space surrounded by the floor panel 2a, the side panel outer 3b, and the rear side frame 10, and the portion eroded by the tire house 5 can be compensated. it can.

  By the way, the member 11 shown in FIG. 3 is a fuel tank, and the fuel pipe 6a shown in FIG. Thereby, the inlet 6a1 of the fuel pipe 6a is set as an inlet for fuel supply. Further, the urea pipe 6b is connected to the urea tank 1, so that the inlet 6b1 of the urea pipe 6b is set as an inlet for supplying the urea aqueous solution X.

  Here, as shown in FIG. 3, the urea tank 1 and the fuel tank 11 are concentrated on one side in the vehicle width direction, so that the two inlets 6a1 and 6b1 are brought close to the one side panel 3. It is possible to arrange them.

  In this way, by arranging the inlet 6b1 for supplying the urea aqueous solution X in the vicinity of the inlet 6a1 for supplying the fuel, the common lid 7 opens and closes them as in the present embodiment. It can be set as a structure, and it becomes unnecessary to provide the lid corresponding to the inlet 6b1 separately.

  The urea aqueous solution X has a slower consumption rate than fuel and its replenishment frequency is low (about once every two years). Even if a lid dedicated to the inlet 6b1 is provided, it is frequent. Never used. In the present embodiment, the lid dedicated to the injection port 6b1, which is not frequently used, is omitted in this way, thereby improving the appearance by reducing the number of parts and the parting line. Yes.

  In addition, in embodiment shown in FIGS. 1-3, although the volume expansion part 1b which expands a volume below the floor panel 2a of the back of the tire house 5 was formed in the urea tank 1, the layout of other vehicle equipment In the case where the space surrounded by the floor panel 2a, the side panel outer 3b, and the rear side frame 10 is not available, instead of forming the volume expanding portion 1b, as shown in FIG. You may make it ensure the capacity | capacitance by setting a front-end position ahead.

  However, also in this urea tank 50, an arcuate cutout 50a for avoiding interference with the tire house 5 and a fastening piece 50c for fastening to the side panel inner 3a (see FIGS. 2 and 3) are formed. This point is the same as that of the urea tank 1 of the embodiment shown in FIGS.

  However, in the case of the urea tank 50 shown in FIG. 4, by extending the front part to the positions of the inlets 6a1 and 6b1, there is a possibility that both of them wrap as shown in the vehicle front-rear direction. If 50 blocks the fuel tank 11 (see FIG. 3) inward in the vehicle width direction, the piping of the fuel pipe 6a may be difficult. In such a case, a pipe through hole or a concave groove for avoiding interference with the fuel pipe 6a may be formed in the urea tank 50.

  In FIG. 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted here.

  When the two inlets 6a1 and 6b1 are arranged close to each other as in the embodiment shown in FIGS. 1 to 3, the display section 12a as shown in FIG. , 12b may be provided. In the case of FIG. 5, “FUEL” indicating fuel is displayed on the display unit 12 a positioned directly above the inlet 6 a 1, and urea is displayed on the display unit 12 b positioned directly above the inlet 6 b 1. “UREA” is displayed. Thereby, it is possible to prevent a mistake in selecting an inlet when supplying the fuel or the urea aqueous solution X.

  In addition, as shown in FIG. 5, by covering the inlet 6b1 for supplying the urea aqueous solution X with a lid 13, fuel may be prevented from being accidentally injected into the inlet 6b1. Further, in this case, the lid 13 may be fixed with special screws 14,... 14 so that the tool cannot be removed unless it is a tool owned only by a specific person such as a specialist.

  In the above-described embodiment, the urea tank 1 and the fuel tank 11 are gathered on one side in the vehicle width direction, but are arranged separately on the side panels 3 and 3 on both sides. Also good. In this case, the weight balance in the vehicle width direction can be balanced by the urea tank 1 and the fuel tank 11.

  In the above-described embodiment, the case where the present invention is applied to the truck-type vehicle V has been described. However, as long as a dead space is formed outside the frame member including the rear side frame, the truck-type vehicle is used. The present invention can be applied not only to V but also to various types of vehicles such as passenger cars.

  The reducing agent is not limited to urea, and may be any substance selected from hydrocarbons, cyanuric acid, ammonia, ammonium carbonate, ammonium carbamate, and the like, and may be used in combination.

In correspondence between the configuration of the present invention and the above-described embodiment,
The reducing agent tank of the present invention corresponds to the urea tanks 1 and 50,
Similarly,
The vehicle body floor corresponds to the floor panel 2a,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The perspective view which shows the arrangement | positioning structure of the urea tank which concerns on embodiment of this invention. The principal part expansion perspective view which expands and shows the urea tank periphery. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The perspective view which shows the arrangement | positioning structure of the urea tank which concerns on other embodiment of this invention. The front view which shows the structure around the injection hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 50 ... Urea tank 1b ... Volume expansion part 2a ... Floor panel 3 ... Side panel 3a ... Side panel inner 3b ... Side panel outer 5 ... Tire house 6a1, 6b1 ... Inlet 7 ... Lid 10 ... Rear side frame 11 ... Fuel tank X: Urea aqueous solution

Claims (5)

An arrangement structure of a reducing agent tank mounted on a vehicle for exhaust gas purification in a vehicle,
A reducing agent tank disposition structure in a vehicle in which the reducing agent tank is disposed outside the frame member constituting the vehicle body. As the frame member, a side frame extending in the vehicle front-rear direction at both sides in the vehicle width direction is provided,
A side panel of the vehicle body is disposed outside the side frame in the vehicle width direction,
2. The reducing agent tank arrangement structure for a vehicle according to claim 1, wherein the reducing agent tank is arranged between a side panel inner and a side panel outer constituting the side panel. The side frame is a rear side frame,
3. The reducing agent tank arrangement structure for a vehicle according to claim 2, wherein the reducing agent tank is formed with a volume expanding portion that expands the volume inward in the vehicle width direction below the vehicle body floor behind the tire house. An inlet for supplying fuel to the fuel tank and an inlet for supplying the reducing agent to the reducing agent tank are disposed close to each other,
The reducing agent tank arrangement structure in a vehicle according to any one of claims 1 to 3, wherein both the inlets are configured to be opened and closed with a common lid. The said vehicle is a truck type vehicle, The reducing agent tank arrangement | positioning structure in the vehicle as described in any one of Claims 1-4.

Images