JP3531197B2 - Vehicle engine installation structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle engine mounting structure, and more particularly to a so-called midship type engine mounting structure in which an engine is mounted in the center of a vehicle body.

[0002]

2. Description of the Related Art In order to improve the running characteristics of a vehicle, there are known methods for improving power performance, reducing weight, minimizing a yaw moment of inertia generated during steering, optimizing weight distribution to the front and rear axles, and the like. , In particular, various proposals have been made for the engine layout structure called the midship type, in which an engine, which is a heavy object, is mounted in the center of the vehicle body in order to minimize the yaw moment of inertia and optimize the weight distribution to the front and rear axes. Has been done.

By the way, in a vehicle having a general midship type engine arrangement structure, since the engine is arranged at the left and right center positions behind the driver's seat, there is no space for a luggage compartment, and a low C _D value (air Combined with the slant nose to obtain a resistance coefficient, the baggage capacity was completely sacrificed. Therefore, although the exercise performance is excellent, the layout is poor and there is a problem in practicality.

Therefore, for example, the "vehicle engine unit arrangement structure" disclosed in Japanese Patent Laid-Open No. 5-85195.
Then, by arranging the engine unit vertically behind the front and rear axles with the engine unit behind the front wheels, being offset to the side opposite to the driver's seat side with respect to the center line of the left and right sides of the vehicle body, the athletic performance is improved and the layout is We are trying to improve sex.

[0005]

The object of the invention is to be Solved However, the above-mentioned public
In the configuration disclosed in the report , the engine unit is vertically placed between the front and rear axles with the engine unit biased to the side opposite to the driver's seat side with respect to the center line of the vehicle body. Since there is no choice but to arrange it at the rear of the unit, there is a drawback that the driver's seat and the front passenger's seat are displaced forward and backward, resulting in an irregular seat arrangement. In addition, since the passenger seat is located behind the normal position, this causes the space in the luggage compartment to be narrowed.

In view of the above, the present invention provides a vehicle having a midship type engine arrangement structure among vehicles generally called a sports car, which has a low center of gravity and a low vehicle height.
It is an object of the present invention to provide an engine disposition structure capable of achieving a layout with a low yaw moment of inertia with an extremely compact structure and ensuring a sufficient luggage compartment volume.

[0007]

In a vehicle engine disposition structure according to the present invention, a vehicle compartment and an inner space of a nose portion in front of the vehicle compartment are partitioned by a dash panel, and the dash panel is disposed substantially in a vehicle width direction. On the floor panel in the vehicle compartment, the tunnel portion extending rearward from the center portion and communicating with the inner space of the nose portion overlaps with the lower body of the driver in the driving posture when viewed from the side of the vehicle body. An engine with the output shaft extending in the front-rear direction of the vehicle is provided in the tunnel portion, and a cross member that connects the left and right front side frames in front of the engine is installed.
The front and rear suspension arm members are located at the left and right ends of the
The base part of the
, The front portion of the engine is mounted, accessory mounting member is erected on the cross member in front of the engine, Freon and the left and right sides of the accessory attachment member
Reinforcing bracket between the upper surface of the toeside frame
Are arranged respectively and are supplemented by the respective reinforcing brackets.
Machine mounting members are front side frame and suspension
It is characterized in that a plurality of engine accessories are attached to the accessory mounting member and are connected to the engine tower section .

[0008]

Further, according to another aspect of the present invention, the left and right front side frames and the side sills are connected to each other by a torque box having a closed cross section extending in the vehicle width direction, and on the cross member connecting the torque boxes. , The front of the engine is mounted.

Further, according to another aspect of the present invention, the intake pipe of the engine is led forward from the engine toward the internal space of the nose portion. In that case, a surge tank is arranged in the internal space of the nose portion.

According to another aspect of the present invention, the exhaust pipe of the engine is led forward from the engine toward the internal space of the nose portion and is connected to the exhaust pipe in the internal space. A catalytic converter is provided.

Further, according to another aspect of the present invention, the intake pipe and the exhaust pipe of the engine are led out from the lower surface of the engine. In that case, a plurality of intake pipes that are led out from the lower surface of the engine toward the front are distributed and arranged left and right around the engine. Further, the intake pipe extends from inside the tunnel portion toward an inner space of the nose portion, and a footrest is provided near a side panel at a front end portion of the tunnel portion.

Further, according to another aspect of the present invention, the exhaust pipes led out from the lower surface of the engine toward the front are distributed to the left and right, and extend rearward through both sides of the engine.

[0014]

According to the present invention, since the engine is arranged in the tunnel portion projecting on the floor panel of the passenger compartment behind the dash panel of the vehicle body,
The front-rear length of the vehicle can be shortened, and a layout with a low center of gravity, a low vehicle height, and a low yaw moment of inertia can be achieved with an extremely compact structure.

Further, by accommodating the engine in the vehicle compartment, it is possible to realize a slant nose that achieves both low _CD and high downforce, and it is possible to secure a sufficient luggage compartment volume.

Further, despite being a compact and lightweight vehicle body,
Body nose portion engine power unit is not present is to function as a sufficient crushable zone for frontal collision, that is also ensured safety.

[0017] Also, each coupled by left and right closed cross section shape of the torque box and the front side frames and side sills extending in the vehicle width direction, and on the cross member for connecting the torque box, mount the front portion of the engine In this case, there is an advantage that both the rigidity of the vehicle body and the supporting rigidity of the engine are improved.

[0018]

[Examples] Reference examples and reference examples will be given below with reference to the accompanying drawings.
And an example of the present invention will be described.

FIG. 1 is a schematic side view of a vehicle of a reference example , and FIG.
Is a side view thereof, and FIG. 3 is a perspective enlarged front view.

This vehicle is configured as a small two-seater (two-seater) coupe having a midship type engine disposition structure in which a power unit including a vertically installed engine is disposed between front and rear wheel axles. , 8 is an engine, 11 is a front wheel, and 12 is a rear wheel. R in these reference numbers means a right wheel and L means a left wheel. Further, in the following description, in order to distinguish right and left, reference numerals are appropriately added as needed, R for right and L for left. The same reference numerals denote the same objects throughout the drawings.

In the figure, a vehicle body 1 is divided into a slant nose inner space 2 of a nose portion and a vehicle compartment 3 behind it by a dash panel 4, and a luggage compartment 5 is provided at the rear portion of the vehicle body.
As shown in FIG. 3, on the floor panel 6 in the vehicle compartment 3, the dash panel 4 extends rearward from a substantially central portion in the vehicle width direction, and the inner space 2 of the nose portion is formed.
A tunnel portion 7 that communicates with the is protrudingly provided. An engine 8 having the output shaft extending in the front-rear direction of the vehicle body 1 is disposed in the tunnel portion 7.

The engine 8 is a two-rotor rotary piston engine which employs a dry sump lubrication system with the oil pan omitted, and the lower surface of the engine 8 is closed by a flat closing plate 8b instead of the oil pan. Therefore, the total height of the engine 8 is reduced accordingly. An engine cover 8a for covering an oil pump attached to the front end of the engine 8 is provided at the front end of the engine 8, and a clutch housing 9 is integrated at the rear end of the engine 8 at the front end of the housing 8. Rigidly coupled via a mounting flange 9a formed on the. Further, the transmission housing 10 is integrally rigidly connected to the rear end of the clutch housing 9. The clutch housing 9 and the transmission housing 10 are also arranged in the tunnel portion 7 together with the engine 8.

Further, the transmission housing 10
Similar to the conventional configuration, the extension housing 13 has an extension housing 13 integrally formed in the rear portion thereof and extended rearward. However, in the present reference example , a tubular extension 13a extending further rearward from the extension housing 13 is provided.
Is integrally formed, and the rear end of the extension portion 13a is a housing 14 of a rear wheel differential gear device (differential).
Rigidly connected to. Then, the output shaft (not shown) of the transmission is extended rearward so that the extension 1
The engine 8, the clutch housing 9, the transmission housing 10 and the housing 14 of the rear wheel differential gear unit are integrally formed by being connected to the input shaft (not shown) of the rear wheel differential gear unit through the inside of 3a. The power train 15 is rigidly connected.

The driver's seat and the passenger's seat are arranged on both sides of the tunnel portion 7 in the passenger compartment 3, but in FIG. 1, only the seat back 16 of the driver's seat or the passenger's seat is shown, and The torso 17 and lower body 18 of the driver in the posture are shown by hatched virtual lines. Then, as is apparent from FIG. 1, the lower body 18 of the driver in the driving posture and the tunnel portion 7 are in a state of overlapping when viewed from the side of the vehicle body 1.

2 and 3, the driver's seat is provided to the left of the tunnel section 7, and the steering wheel 19,
A left-hand drive vehicle in which a footrest 20, a clutch pedal 21, a brake pedal 22, and an accelerator pedal 23 are arranged on the left side of the tunnel portion 7 is shown. The vehicle engine arrangement structure in this reference example is shown. Is also applicable to right-hand drive vehicles.

The power train 15 includes two parts on both sides of the front part of the engine 8 and the housing 1 of the rear wheel differential gear device.
It is mounted on the vehicle body frame at two locations on both sides of 4 via vibration-proof rubber.

That is, as shown in FIGS. 4 and 5, a pair of left and right front side frames 24L and 24R are provided at the nose portion of the vehicle body 1 so as to extend in the vehicle front-rear direction. 24L and 24R are
The cross members 25 are connected to each other at a portion slightly forward of the rear ends thereof. This cross member 2
Reference numeral 5 denotes a rear member 25a and a front member 25b that extend in the vehicle width direction at a predetermined interval in the vehicle front-rear direction, and both members 2
Left and right connecting members 25cL, 2c for connecting between 5a and 25b
It has a ladder shape with 5 cR. Then, at the left and right ends of the front member 25b, the upper arms 35L, 35
A front end portion 36b of the bases of the lower arms 36L and 36R of a double wishbone type front wheel suspension device (see FIG. 3) including the R and lower arms 36L and 36R.
Are swingably attached, and the rear end portions 36a of the base portions of the lower arms 36L and 36R are swingably attached to the left and right ends of the rear member 25a.

Further, engine mount members 26L and 26R are bridged obliquely between the rear member 25a and the rear ends of the front side frames 24L and 24R, and the front portion of the engine 8 is mounted on these members 26L and 26R. Engine mount bracket 37 integrally projecting on both sidewalls
L and 37R are attached via anti-vibration rubbers 27L and 27R. The engine mount member 26L,
26R is removably attached to the cross member 25a and each of the front side frames 24L and 24R, which enables the engine 8 to be removed from the vehicle body 1 regardless of the front wheel suspension device, thereby improving serviceability. Is improving.

Further, the left and right front side frames 2
The rear ends of the 4L and 24R and the front ends of the side sills 28L and 28R that form the left and right side frames at the center of the vehicle body have torque boxes 29L and 29L having a closed cross section extending in the vehicle width direction.
Each is connected by R.

On the other hand, as shown in FIG. 2, the rear ends of the side sills 28L and 28R are connected by a cross member 30, and the front ends of the cross members 30 are connected to the left and right rear side frames extending rearward. 31
L and 31R are provided, and these rear side frames 31
The housing 14 of the rear wheel differential gear device is mounted on the cross member 32 connecting the L and 31R via vibration damping rubber (not shown). A fuel tank 34 is arranged above the housing 14 of the rear wheel differential gear device so as to straddle the housing 14.

Since the engine 8 employed in the present reference example is a rotary piston engine, the intake pipe 41 and the exhaust pipe 42 of the engine 8 are located at the lead-out position of the exhaust pipe 42.
Both of the engine 8 and
It is attached to the right side of the. Two intake pipes 41 are provided for each cylinder, and a total of four intake pipes 41 are led out from the engine 8 toward the internal space 2 of the vehicle body nose portion, and an exhaust pipe 42 is led out from the engine 8 rearward. There is.

The front ends of the four intake pipes 41 are connected to the engine 8
Of switching the intake pipe length depending on the rotational speed, coupled resonance supercharging effect switching for generating Eve Rubuchanba 43 (provided in the inner space 2 of the vehicle body nose portion), shown in Figure 5 As described above, the intake air introduced from the intake duct 44 at the front end of the vehicle body nose portion is
Air cleaner 45 and surge tank 4 disposed inside
It is configured to be supplied to the valve chamber 43 via 6 above. Further, a radiator 50 is provided in the interior space 2 of the nose portion of the vehicle body so as to be tilted forward, thereby enabling a slant nose.

On the other hand, the exhaust gas led out from the exhaust pipe 42 to the rear of the engine 8 passes through a precatalyst (pre-catalyst converter) 47 and a main catalyst (main catalytic converter) 48, and is purified to the left and right. It is branched and discharged through the left and right silencers 49L and 49R to the outside of the vehicle.

As shown in FIG. 6, not only the intake pipe 41 but also the exhaust pipe 42 is led out forward, and the precatalyzer 47 is attached to the internal space 2 of the vehicle body nose portion.
You may arrange in. In this configuration, the precatalyzer 4
By removing 7 from the inside of the tunnel portion 7, the lateral width of the tunnel portion 7 can be narrowed and the living space can be expanded.

Next, one example of the supporting and driving structure of the auxiliary machinery in this reference example will be described with reference to FIGS. 7 to 9.

The above-mentioned accessories are arranged in front of the engine 8 as indicated by a phantom line A in FIG. That is, on the front surface of the engine 8, the accessory mounting bracket 51 is attached to one engine mounting bracket 37L.
And an accessory mounted on the engine cover 8a in a fixed manner and mounted on the accessory mounting bracket 51 such as an alternator 52, an air conditioner compressor 53, a power steering oil pump 54, etc. driven by the engine 8 via a belt. The machines are supported with their respective rotary shafts facing rearward, that is, toward the engine 8 side, and driven pulleys 52a to 54a are attached to the rotary shafts of these auxiliary machines, respectively.

On the other hand, the front end of the eccentric shaft 55 of the engine 8 penetrates the engine cover 8a and projects into the internal space 2 of the vehicle body nose portion, and the drive pulley 55a is attached to the front end of the eccentric shaft 8b. And this drive pulley 55a
A driven pulley 56a attached to the rotary shaft 56 of the water pump which penetrates the engine cover 8a and projects forward, an idler 57 rotatably attached to the engine cover 8a, and the auxiliary machinery 52 to 54. One belt 58 is suspended between the driven pulleys 52a to 54a to form a so-called serpentine type belt drive mechanism.

There is a space in the area corresponding to the drive pulley 55a and the idler 57 between the accessories 52 to 54 supported by the accessory mounting bracket 51. Type air pump 5
An accessory such as 9, which is not driven by the engine, is attached.

The above is the configuration of the reference example of the vehicle engine disposition structure. In this reference example , the engine 8 is
The oil pan was omitted and the dry sump lubrication system was adopted.
The front projection of the engine 8 is achieved by accommodating the auxiliary equipment, which is composed of a two-rotor / rotary-piston engine and is driven by the engine 8, in the internal space 2 of the vehicle body nose portion in a manner mounted on the front portion of the engine 8. The area is extremely small, which makes it possible to dispose the power unit including the engine 8, the clutch and the transmission in the tunnel portion 7 projecting on the floor panel 6 of the passenger compartment 3. Therefore, the front-rear length of the vehicle body can be shortened, and a layout with a low center of gravity, a low vehicle height, and a low yaw moment of inertia can be achieved with an extremely compact structure.

Further, by accommodating the power unit to the vehicle interior 3, it can be realized slant nose having both low C _D and high downforce, yet making it possible to ensure a sufficient load chamber volume It was

Furthermore, while being a compact and lightweight body,
The nose of the vehicle body, where there is no power unit, functions as a sufficient crushable zone for frontal collisions, ensuring safety.

Next, FIGS. 10 and 11 show the first embodiment of the present invention.
FIG. 6 is a plan view and a side view showing a structure of a main part in one embodiment corresponding to FIGS. 4 and 5, respectively.

In this embodiment, the basic arrangement of the power train 15 with respect to the vehicle body 1 is the same as that of the above-described reference example , but the mounting structure of the front part of the engine 8 and the disposition structure of auxiliaries are the same as those of the reference example . Is different.

That is, as shown in FIG.
The engine mount cross member 61 of this embodiment is
A rear member 61a that has a planar shape in which the left and right ends of the rear edge project toward the rear and connects between the rear end portions of the left and right front side frames 24L and 24R, and the left and right front parts in front of the rear member 61a by a predetermined distance. The front member 61b connecting between the side frames 24L and 24R, and the vehicle body 1
Of the rear member 61a and the front member 61
The connecting member 61c that connects b and the connecting member 61c are integrally formed into a substantially H shape.

The trailing edge of the rear member 61a of the cross member 61 has a shape which left the right end of its overhangs rearward,
The front portion of the engine 8 is attached to the portion projecting rearward via the vibration-proof rubbers 27L and 27R. Further, at the left and right ends of the front member 61b of the cross member 61, the lower arms 36L, 36 of the front wheel suspension device are provided.
The front end portions 36b of the R bases are swingably attached to the left and right ends of the rear member 51a of the cross member 61.
The rear ends 36a of the bases of the lower arms 36L and 36R are swingably attached. Therefore,
The cross member 61 has both a function as a so-called suspension cross member that supports the lower arms 36L and 36R of the front wheel suspension device, and a function as an engine mount member that supports the front portion of the engine 8.

Further, similar to the configuration shown in FIG. 4, the left and right front side frames 24L, 24R and the front ends of the side sills 28L, 28R have closed cross-section torque boxes whose front ends extend in the vehicle width direction. The rear member 61a of the cross member 61 on which the front portion of the engine 8 is mounted is connected to each other by 29L and 29R, and the left and right torque boxes 29L and 29R are connected to each other.

In this embodiment, since the rear member 61a of the cross member 61 is in a state where the left and right torque boxes 29L and 29R are connected to each other, the vehicle body rigidity is improved.

FIG. 12 to FIG. 15 are views showing the auxiliary equipment arrangement structure in this embodiment. That is, as shown in FIG. 12, an accessory mounting member 62 is erected on the front member 61b of the cross member 61, and the alternator 52 and the air conditioner compressor are provided on the front side of the member 62. 53, power steering oil pump 54, and other accessories driven by the engine 8 have their respective rotary shafts oriented rearward, that is, toward the engine 8 side, and the respective rotary shafts are attached to the auxiliary machinery. 62 is projected rearward from the rear surface of 62 and is fixed to the accessory mounting member 62, and driven pulleys 52a to 54a are mounted on the rotating shafts of these accessories (see FIG. 14).

The driven pulleys 52a to 52a ... To form a so-called serpentine type belt drive mechanism.
A drive pulley 55a that drives 54a via one belt 58 is rotatably supported by a bearing (not shown) attached to the rear surface of the accessory mounting member 62, and the drive pulley 55a and the eccentric The drive pulley 55a is configured to be driven via a propeller shaft 63 for driving an accessory, which is connected to the front end of the shaft 55. Propeller shaft 63
Both ends of each are connected to an eccentric shaft 55 and a drive pulley 55a through joints capable of absorbing engine vibration, and a fan 64 for cooling the inside of the tunnel portion 7 is provided in the middle of the propeller shaft 63. Is attached.

Since there is a space in the area corresponding to the drive pulley 55a between the accessories 52 to 54 on the front surface of the accessory mounting member 62, the engine 8 is placed in this space.
An auxiliary machine that is not driven by, for example, an electric air pump 59 is attached.

As shown in FIG. 12, both side surfaces of the accessory mounting member 62 and the left and right front side frames 2 are shown.
The upper surfaces of 4L and 24R are connected by reinforcing brackets 65L and 65R, respectively. The reinforcing brackets 65L and 65R are provided on the auxiliary equipment mounting member 62 and the left and right suspension tower portions 66L and 66R.
13 may be provided between the reinforcing bracket 65 and the auxiliary equipment mounting member 62, as shown in FIG.
L, 65R, front side frame 24L,
More preferably, it is connected to both the 24R and the suspension tower portions 66L and 66R.

[0052] Then, 12 and 13,
Left right front side frames 24L, 24R and the reinforcing bracket 65L, the space left which is formed surrounded by the 65R and auxiliary mounting member 62, the catch tank 67L accommodating oil for engine lubrication is 67R It is arranged.

The above is the configuration of the first embodiment of the vehicle engine disposition structure according to the present invention. According to this embodiment,
In addition to having the same effect as the above-mentioned reference example , the accessory mounting member 62 is connected to the front side frames 24L, 24R and / or the suspension tower portions 66L, 66R via the reinforcing brackets 65L, 65R. As a result, the rigidity of the vehicle body and the rigidity of supporting the auxiliary machine are improved. Further, the accessory mounting member 6
2 is connected to the front side frames 24L, 24R via the reinforcing brackets 65L, 65R, the cross member 61 supporting the front portion of the engine 8 and the front wheel suspension device needs to be removed from the vehicle body at the time of servicing. Even if there is, it is possible to support the accessory mounting member 62 on the front side frames 24L, 24R via only the brackets 65L, 65R, so that the serviceability is also improved.

Further, in order to improve the running performance of the vehicle, the left and right suspension tower portions 66L,
Reinforcement member between 66R (called suspension tower bar)
However, when the accessory mounting member 62 is connected to the suspension tower portions 66L and 66R via the reinforcing brackets 65L and 65R, respectively, the left and right suspension tower portions 66L and 66R are connected to each other.
6R is to be rigidly connected via the reinforcing brackets 65L, 65R and the auxiliary mounting member 62, it is possible to obtain the same effect as in the case of providing the suspension tower bar.

Next, FIGS. 16 and 17 show the second embodiment of the present invention.
FIG. 2 is a schematic front view and a plan view showing the configuration of an intake / exhaust system of the engine in the example.

[0056] engine 8 applied to the present embodiment, as in the reference example and the first embodiment described above, a rotary piston engine of the second rotor employing the dry sump lubrication system, the above-mentioned reference examples and the first Engine 8 in the embodiment
Intake pipe 41 and exhaust pipe 4 derived from the right side of the
2 is disposed in the tunnel portion 7 of the vehicle body 1 in a state of being laid down sideways so that the vehicle 2 is led out from the lower surface of the engine 8. Further, from the lower surface of the engine 8 to the inner space 2 of the front vehicle body nose portion. Four intake pipes 41 led out toward the left and right are distributed and arranged, and are connected to an intake pipe length switching valve chamber 43 arranged in the internal space 2 of the vehicle body nose portion.

With such an engine arrangement structure, FIG.
As is clear from FIG. 6, the lower portion 7a of the right panel (left panel in FIG. 16) at the front end of the tunnel portion 7 is located at the lower portion of the right panel when the engine 8 is upright (indicated by an imaginary line 7a ′). ) Can be brought closer to the engine 8 side. As a result, the foot of the driver in the right-hand drive vehicle becomes wider, and a footrest 81 (hatched) for placing the left foot 80 of the driver placed closer to the side panel of the tunnel portion 7 is more preferable. Can be provided.

Further, in the rotary piston engine in the upright state, the exhaust pipe 42 on its one side surface is located below the intake pipe 41, so that the engine 8 is connected to the intake pipe 41 and the exhaust pipe 42. Engine 8
When it is laid sideways so as to be drawn from the lower surface of the exhaust pipe 42, the exhaust pipe 42 is located on the left side of the vehicle body (the right side in FIG. 17) with respect to the intake pipe 41. Therefore, as shown in FIGS. 18 and 19, the exhaust pipe 42 is led forward from the right side (in FIGS. 18 and 19) of the engine 8 and is disposed in the internal space 2 of the vehicle body nose portion. A configuration in which it is connected to the precatalyst 47 is also possible. The exhaust pipe 42 downstream of the precatalyst 47
18 may be led out along the upstream exhaust pipe 42 as shown in FIGS. 18 and 19, but FIG.
As shown in 0, by branching the exhaust pipe 42 on the downstream side of the precatalyst 47 to the left and right, the outer diameter and heat generation amount per exhaust pipe can be reduced. It is possible to reduce the heat damage to the accelerator pedal of the left-hand drive vehicle, which is indicated by a virtual line 23 in FIG.

[Brief description of drawings]

FIG. 1 is a schematic side view of a vehicle of a reference example .

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a perspective front view of the same.

FIG. 4 is an enlarged plan view showing a mount structure of a front portion of an engine of a reference example .

FIG. 5 is a side view showing a configuration of a vehicle body front portion of the vehicle.

FIG. 6 is a perspective view showing a modified example of the engine exhaust system.

FIG. 7 is an enlarged plan view showing an example of the auxiliary equipment arrangement structure.

FIG. 8 is a front view of the same.

FIG. 9 is a perspective view of the same.

FIG. 10 is an enlarged plan view showing a mount structure of an engine front part and an auxiliary device disposition structure of a vehicle to which the first embodiment of the invention is applied.

FIG. 11 is a side view of the same.

12 is a sectional view taken along line XII-XII in FIG.

13 is a cross-sectional view in which the configuration of FIG. 12 is partially changed.

14 is a sectional view taken along line XIV-XIV in FIG.

15 is a sectional view taken along line XV-XV in FIG.

FIG. 16 is a schematic front view showing a configuration of an engine intake / exhaust system of a vehicle to which a second embodiment of the present invention is applied.

FIG. 17 is a plan view of the same.

FIG. 18 is a schematic front view showing a configuration of a modified example of the intake / exhaust system.

FIG. 19 is a plan view of the same.

FIG. 20 is a schematic plan view showing the configuration of a further modified example of the intake and exhaust system.

[Explanation of symbols]

1 car body 2 Internal space of nose part 3 car compartment 4 dash panel 5 luggage compartment 7 tunnel section 8 engine 9 Clutch housing 10 Transmission housing 11 front wheels 12 rear wheels 14 Rear wheel differential gear housing 15 power train 24L, 24R Front side frame 25, 61 cross members 27L, 27R Anti-vibration rubber for engine mount 28L, 28R Side sill 29L, 29R Torque Box 35L, 35R Upper arm 36L, 36R Lower arm 41 Intake pipe 42 Exhaust pipe 43 valve chamber 45 air cleaner 46 surge tank 50 radiator 62 Auxiliary equipment mounting member 63 Propeller shaft for driving auxiliary equipment 64 cooling fan 65L, 65R Reinforcing bracket 66L, 66R suspension tower 81 footrest

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomohiro Hori 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (56) Reference JP-A-58755 (JP, A) JP-A-4 -306180 (JP, A) JP-A-50-40909 (JP, A) JP-A-4-284153 (JP, A) JP-A-56-103657 (JP, A) JP-A-63-103770 (JP, A) ) Japanese Unexamined Patent Publication No. 6-278643 (JP, A) Actually open 4-87338 (JP, U) Actually open 63-159322 (JP, U) Actually open 4-55476 (JP, U) Actually open 5- 41928 (JP, U) Actually open 61-122131 (JP, U) Actually open 5-58841 (JP, U) Actually public 55-28806 (JP, Y1) Actually public 27-6916 (JP, Y1) S. 63-17687 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60K 5/02 B60K 13/02-13/04 B62D 21/00 B62D 25/20

Claims (9)

(57) [Claims] 1. A vehicle compartment and an inner space of a front nose portion of the vehicle are partitioned by a dash panel, extend rearward from a substantially central portion of the dash panel in a vehicle width direction, and communicate with the inner space of the nose portion. When viewed from the side of the vehicle body, the tunnel portion is projected on the floor panel in the vehicle compartment in a manner overlapping with the lower body of the driver in the driving posture, and the extension direction of the output shaft is disposed in the vehicle body in the tunnel portion. An engine is installed in the front- rear direction, and there is a space between the left and right front side frames in front of the engine.
Front wheel suspension at the left and right ends of the cross members to be connected
The base of the arm member of the device is swingably mounted, and the front part of the engine is mounted on the cross member.
Is, accessory mounting member, at the front of the engine is upright on the cross member, front side and right and left side surfaces of the accessory attachment member
Reinforcing brackets are installed between the upper surface of the frame and
The above-mentioned reinforcing brackets are used to attach the accessory mounting members.
Connect to the front side frame and suspension tower.
A structure for disposing an engine of a vehicle, wherein a plurality of engine accessories are attached to the accessory mounting member. 2. The left and right front side frames and side sills are respectively connected by a torque box having a closed cross section extending in the vehicle width direction, and the front portion of the engine is mounted on a cross member connecting the torque boxes. The structure for disposing the engine of the vehicle according to claim 1 , wherein 3. A mounting structure of an engine for a vehicle according to claim 1 or 2 intake pipe is characterized by comprising derived forwardly toward the interior space of the nose portion from the engine of the engine. 4. The vehicle engine disposition structure according to claim 3 , wherein a surge tank is disposed in the internal space of the nose portion. 5. An exhaust pipe of the engine is led forward from the engine toward an internal space of the nose portion, and a catalytic converter connected to the exhaust pipe is disposed in the internal space. 5. The vehicle engine disposition structure according to any one of claims 1 to 4 . 6. A mounting structure of an engine for a vehicle according to any one of from the intake pipe and an exhaust pipe of the engine is not claim 1, characterized by comprising derived from the lower surface of the engine 5 . 7. The engine arrangement of a vehicle according to claim 6 , wherein a plurality of intake pipes which are led out from the lower surface of the engine toward the front are distributed and arranged in the left and right around the engine. Construction structure. 8. The intake pipe extends from inside the tunnel portion toward an inner space of the nose portion, and a footrest is provided near a side panel at a front end portion of the tunnel portion. The structure for disposing the engine of the vehicle according to claim 7 . 9. An exhaust pipe derived forward from the underside of the engine is distributed to the left and right, to claim 6 or 7, characterized in that is extended backward through the both sides of the engine The arrangement structure of the engine of the vehicle described.