JPH088251Y2 - Vehicle engine accessory arrangement structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle engine accessory arrangement structure.

(Prior Art) Conventionally, as a so-called horizontal engine type vehicle,
For example, as disclosed in Japanese Utility Model Laid-Open No. Sho 63-169325, an engine provided with an output shaft extending in the left-right direction of a vehicle body in an engine room, and an output shaft provided on one side of the engine Engine accessories driven by the output shaft,
It is known to have an oil pan provided on the bottom of the engine. According to the engine horizontal type vehicle, the longitudinal length of the engine room can be shortened by disposing the engine that is vertically long in the output shaft direction in the left-right direction of the vehicle body, and the engine room becomes compact.

In this case, the exhaust manifold is provided on the front end side of the engine, and the oil pan is
A concave portion is formed by upwardly recessing the one end portion side of the lower surface corresponding to the one end portion side of the engine, which is necessary for the structure, and the concave portion is connected to the exhaust manifold and is connected to the exhaust manifold. It plays a role as a shortening path for the exhaust pipe that guides the exhaust gas discharged to the rear end of the vehicle body.

(Problems to be solved by the invention) By the way, recently, in order to further miniaturize the engine room, it is required that a catalyst as an exhaust gas purifying device, which is provided in the middle of the exhaust pipe, is provided outside the engine room. There is. However, in the above conventional one,
Good exhaust gas purification action because the length of the exhaust pipe that is guided from the exhaust manifold on the engine front end side through the recess of the oil pan to the catalyst outside the engine room, that is, the distance from the exhaust manifold to the catalyst is too large. It becomes difficult to guide the high temperature exhaust gas required to obtain the catalyst to the catalyst, and the harmful effect is caused by providing the catalyst outside the engine room.

Therefore, the layout of the exhaust manifold was changed to the rear end side of the engine so that the exhaust pipe could be placed outside the engine room in a short path, and the catalyst was placed outside the engine room without causing any adverse effects. It is conceivable to make the engine room compact.

However, in the above-mentioned one, the concave portion of the oil pan, which had played a role as a pipe shortening system passage of the exhaust manifold, is emptied in a space state, and the space inside the engine room is efficiently utilized due to the compactness. It cannot be said that they are doing it.

The present invention has been made in view of the above points, and an object thereof is to provide a recess of an oil pan so that an existing article in an engine room is disposed in the recess, and the recess of the oil pan is provided. It is intended to effectively utilize the space in the engine room, which is limited by the compact size, by effectively utilizing.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the solution means of the present invention is as an engine auxiliary equipment structure of a vehicle, in an engine room,
An engine provided with an output shaft extending in the left-right direction of the vehicle body, engine accessories provided on one side of the output shaft of the engine and driven by the output shaft, and provided on the bottom of the engine. It is premised on a vehicle equipped with an oil pan and an oil pan, respectively. An exhaust manifold is provided on the rear end side of the engine, and a recess is formed in the oil pan, the lower surface one side corresponding to the output shaft one side being recessed upward. Further, at least one engine accessory of the engine accessories is arranged in the recess.

(Operation) With the above-described configuration, in the present invention, the concave portion of the oil pan, which played a role as a pipe shortening system passage of the exhaust pipe, is located on one side of the lower surface corresponding to one side of the output shaft on which engine accessories are provided. Is provided so as to be recessed upward, and at least one engine accessory of the engine accessories is disposed in the recess, so that the engine room can be made compact except for at least one engine accessory. By effectively using the recessed portion of the pan, it is possible to more effectively achieve the space efficiency in the engine room.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show an engine mounted on a vehicle having an auxiliary device arrangement structure according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a vehicle dash panel, and an engine room 2 is formed in front of the dash panel 1. The front end of the engine room 2 is provided with a front cross member 3 whose lower end position extends in the left-right direction of the vehicle body, and a shroud upper 4 whose upper end position extends in the left-right direction of the vehicle body. A radiator 5 is provided between the shroud 3 and the shroud upper 4. A cooling fan 6 is provided behind the radiator 5 (on the engine room 2 side). Reference numeral 7 is a hood that covers the engine room 2 from above.

The engine 12 is mounted on the front side of the dash panel 1 in front of the line connecting the axial centers of the left and right front wheels 11 (only one is shown in the figure). The engine 12 is mounted so that the output shaft 13 extends in the left-right direction of the vehicle body. On the front end side of the engine 12, the engine
An intake manifold 14 that supplies intake air for each of the 12 cylinders is provided. By arranging the intake manifold 14 on the front end side of the engine 12 in this manner, traveling wind hits the intake manifold 14 and its charging efficiency is improved by cooling it. Further, an exhaust manifold 15 that collects exhaust gas from each cylinder of the engine 12 is provided on the rear end side of the engine 12. An exhaust pipe 16 is connected to the exhaust manifold 15, and the exhaust pipe 16 is piped from below the dash panel 1 to the rear part of the vehicle. In this way, the exhaust manifold 15 is arranged on the rear end side of the engine 12 and the exhaust pipe 16 is connected to the exhaust pipe 16 so that the substantially entire length of the exhaust pipe 16 is shortened. Further, in the middle of the exhaust pipe 16, there is provided a catalyst 17 as an exhaust gas purification device for purifying harmful gas such as NOx discharged from the exhaust manifold 15, and the catalyst 17 is provided in the engine room. It is provided below a floor panel (not shown) in the rear of the engine room.

Further, one end face side of the engine 12 (left side in FIG. 1)
A transmission 21 for changing the rotational speed of the output shaft 13 is attached to the. In addition, the above engine 12
An oil pan 22 for storing the oil circulating in the engine 12 is attached to the lower surface of the. Then, on one end surface side of the engine 12, that is, on the lower surface of one side of the oil pan 22 corresponding to one side of the output shaft 13, there is a recessed portion that is recessed upward.
22a is provided.

Further, the engine 12 is mounted in a rearward tilted state slanting backward by a predetermined angle, and the intake manifold 14 on the front end side of the engine 12 extends downward from the engine mounting portion and is formed in a substantially L shape. There is. Above intake manifold
A surge tank 31 is connected to the upstream side of 14, and the intake manifold 14 and the surge tank 31 form an intake system member 32. Further, on one end face side (right side in FIG. 1) of the engine 12 (output shaft 13), the first and second belts 34, 35 are attached to a crank pulley 33 attached to one side of the output shaft 13 of the engine 12. An air conditioner compressor 36 as an engine auxiliary device driven via the engine, a mechanical supercharger 37, a power steering drive pump 38, and an alternator 39 are mounted. The compressor 36 for an air conditioner and the mechanical supercharger 37 among the engine auxiliary devices 36 to 39 have the first belt 34 attached to the crank pulley 33.
While the power steering drive pump 38 and the alternator 39 are used as the remaining auxiliary devices.
Is driven by the crank pulley 33 through the second belt 35. In the recess 22a of the oil pan 22, the air conditioner compressor 36 (engine auxiliary equipment) of the engine auxiliary equipments 36 to 39 is arranged.

In FIG. 2, reference numeral 40 is a brake booster that doubles the pedal effort of the brake pedal.

Therefore, in the above embodiment, since the exhaust manifold 15 is provided on the rear end side of the engine 12, even if the catalyst 17 provided in the middle of the exhaust pipe 16 is provided outside the engine room 2. Since the exhaust manifold 15 and the catalyst 17 are not too far apart from each other, the exhaust pipe 16 is guided to the outside of the engine room 2 through a short passage without passing through the recess 22a of the oil pan 22, High-temperature exhaust gas is guided to 17, and a good exhaust gas purification action is obtained.

In that case, the recessed portion 22a of the oil pan 22 has engine auxiliary devices 36 to 39 (air conditioner compressor 36, mechanical supercharger 3
7, the power steering drive pump 38, the alternator 39) is provided by recessing one side of the lower surface corresponding to one side of the output shaft 13 provided upward, and the recess 22a of the engine accessories 36-39. Since the air conditioner compressor 36 is located inside, it is possible to make the engine room 2 compact except for the air conditioner compressor 36 minutes.
This can be further achieved by effectively using the recess 22a of the engine room 2. As described above, the engine room 2 for the catalyst 17 provided outside the engine room 2 is made compact, and the recess 22a of the oil pan 22 is effectively used. Combined with the compactness of the engine room 2 excluding 36 minutes for the air conditioner compressor, the engine room 2 can be effectively made compact, and the space efficiency in the engine room 2 can be effectively utilized.

In the above embodiment, the case where the air conditioner compressor 36 is arranged in the concave portion 22a of the oil pan 22 has been described, but a mechanical supercharger, a power steering drive pump, or an alternator is arranged in the concave portion of the oil pan. Alternatively, two or more of these engine accessories may be placed in the recess of the oil pan.

(Effects of the Invention) As described above, according to the vehicle engine auxiliary device disposition structure of the present invention, the engine pan is provided with the recess of the oil pan that has served as a pipe shortening system passage of the exhaust pipe. Since the lower surface side corresponding to the output shaft side is recessed upward and at least one engine auxiliary machine is arranged in the recess, the compact engine room for the catalyst is provided outside the engine room without trouble. This can be achieved even more effectively in combination with the downsizing of the engine room excluding at least one engine auxiliary part that effectively uses the recessed part of the oil pan, and the effective use of space efficiency in the engine room. Can be planned.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a side view of the engine as seen from the rear of the vehicle body, and FIG. 2 is a longitudinal side view of the front portion of the vehicle. 2 …… Engine room 12 …… Engine 13 …… Output shaft 15 …… Exhaust manifold 22 …… Oil pan 22a …… Concave 36 …… Air conditioner compressor 37 …… Mechanical turbocharger 38 …… Power steering drive pump 39 ... Alternator

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Yuzo Sato 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (56) References: 63-156433 (JP, U) 108339 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An engine provided in an engine room having an output shaft extending in the left-right direction of a vehicle body, and engine auxiliary equipment provided on one side of the output shaft of the engine and driven by the output shaft. And an oil pan provided at the bottom of the engine, an exhaust manifold is provided at the rear end side of the engine, and the oil pan is provided at one side of the output shaft. A corresponding recess is formed by denting one side of the lower surface upward, and at least one engine accessory of the above-mentioned engine accessories is disposed in the recess. Engine auxiliary device arrangement structure.