JPS6294420A - Installation structure of torque rod in v-type engine - Google Patents

Abstract

PURPOSE:To make the inside of an engine compact and improve the vibration suppressing effect by arranging one edge of a torque rod in the vicinity of the edge in the crankshaft direction of a cylinder bank on the dropped side through offset and arranging the other edge onto the rear wall of an engine room. CONSTITUTION:In an engine 1, a pair of banks 2a and 2b are arranged into V-type, and an offset quantity DELTAL is formed on the edge surfaces S1 and S2 in the cylinder row direction of the both banks. A bracket 14 is erected from a clutch housing 15 towards the edge surface S2 in the crankshaft direction of the left side bank 2b, and said bracket 14 and a dashboard 16 are connected by a torque rod 17. In this case, the torque rod 17 is arranged by utilizing the gap DELTAL at the edge surface of the engine dropped by the offset of each bank 2a, 2b. Therefore, the torque rod 17 can be arranged at the position advantageous for receiving the driving torque reaction force of the engine 1 without being interfered with other subsidiary equipment.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to a V-type engine mounted horizontally on a vehicle body in 1S (one configuration in which a torque slot is used). Regarding.

<Prior art> Conventionally, an engine body has been designed such that a small amount of the engine is supported on the vehicle body by a mount rubber, and at the same time, a torque rod installed between the engine body and the vehicle body in a direction perpendicular to the crankshaft acts to counteract the driving torque. The torque rod is designed to receive force, especially in the case of a horizontally mounted 1-engine engine in which the crankshaft is mounted on the vehicle body along the axle. It will be constructed so that the

This torque [1] suppresses engine vibration in the direction of rotation of the crankshaft due to the drive torque reaction force.
Therefore, it is desirable to install one connection part on the top of the engine as much as possible.

<Problems to be Solved by the Invention> However, the engine body is surrounded by various A.1 equipment, and in order to make the vehicle more compact, the engine body in the engine compartment is Since there is a tendency for the space occupied by such equipment to decrease, it is necessary to effectively suppress vibration while avoiding interference with such equipment.)
It was relatively troublesome to provide a 1 to 1 to 100 ft mark at a position.

On the other hand, in the case of a ■-type engine with a pair of banks configured in a V-shape, the 21 netting rod intersects T'l from the crankshaft and extends to both banks, so that the end face of the cylinder head in the cylinder row direction is N The present inventor focused on covering the offset.

In view of the inventor's knowledge of such problems in the prior art,
The main purpose of the present invention is to install the radiator on the V-type engine without interfering with the engine equipment.
The goal is to provide A.

<Means for solving and overcoming the problem> According to the present invention, the purpose of the four cylinders is to form a pair of cylinder banks along the crankshaft in a V-shape and offset from each other in the direction of the crankshaft. These are several examples of the structure of a torque rod in a V-type engine for connecting the engine main body mounted along the width direction of the vehicle body and the vehicle body, in which the crank of the cylinder bank on the side recessed into the To provide a structure for a torque rod in a V-type engine, characterized in that the torque rod has one end disposed near the GMI in the axial direction and one end disposed on the rear wall of the engine room of the vehicle body. In particular, J: is achieved.

In this way, by utilizing the inherent shape of the V-type engine to provide a torque rod connection, interference with other equipment can be avoided, and the It becomes possible to receive torque reaction force at a position with high vibration isolation efficiency.

<Embodiments> The present invention will be described in detail with reference to specific embodiments with reference to the accompanying drawings below.

FIG. 1 shows an engine 1 to which the present invention is applied,
The engine 1 is configured as a V-type six-cylinder engine in which three cylinders are connected in each bank 2a and 2b.

At the end of one bank 2a there is a distributor 3,
The timing pulley on the tension side, which will be described later, is connected to a fixed camshaft, and the disc]
A plug cord 4 is wired to apply an ignition voltage from the revuter 3 to spark plugs (not shown) screwed into the cylinder heads of each bank 2a, 2b.

In the center of the gap formed between both banks 2a and 2b,
An intake manifold 5 and an intake chamber 6 are installed downwardly of the engine 1 in order to distribute intake air to the intake manifold 5. On the upper side of the intake chamber 6 in FIG. A throttle body 7 having a built-in throttle valve is provided to control the amount of intake air. Furthermore, both banks 2a.

At the lower end of the gap between 2b in FIG. has been done.

A fuel 1':1 injection 0=1 valve 10 is provided for each cylinder near the connection part λ1 to each bank 2a, 2b of the intake manifold 5, and these fuel oil injection 134 valves 101 and fuel piping 11, and the fuel injection timing is optimally controlled by a signal from a controller 12 disposed above the intake manifold 5.

In the case of a V-type engine, netting rods (not shown) extend from the crankshaft at intersections to be connected to the pistons in both banks 2a and 2b, so that end faces S1 in the cylinder row direction of both banks 2a and 2b, In S2,
An offset amount shown by the hem dimension occurs. Therefore, on the upper side of C in FIG. 1, the left bank 2b is recessed from the end face of the cylinder block 13 in the crankshaft direction, and similarly, on the lower side, the right bank 2a is recessed.

Toward the end surface S2 of the left bank 2b in the crankshaft direction,
A bracket 14 is provided upright from the clutch housing 15. The bracket 14 and the dash board 16 of the vehicle body are connected by a torque rod 17 extending along the longitudinal direction of the vehicle body and on substantially the same horizontal plane as the camshaft.

This torque rod 17 receives the driving reaction force of the engine.

Since this torque rod 17 is intended to suppress vibrations in the rotational direction of the engine, it is desirable that it be provided at a location a certain distance outward in the semi-i direction from the center of the crankshaft. . However, as shown in this embodiment, by utilizing the gap Δl- in the end face of the engine sunk by the offset of both banks 2a and 2b, it is possible to set up the required 1 to 1 km rod in a limited space. becomes.

J shown in FIG. 2: A pulley 22 having a plurality of V grooves is fixed to the shaft end of a crankshaft 21 protruding from the end surface of the engine 1. The alternating current generator 9 is connected to a crankshaft 21 via pulleys 8a and 9a fixed to respective rotating shafts and a belt 23 suspended around the pulleys.
Driven by. The end surfaces of the engine 1 along the axial direction of the crankshaft 21 on the back surfaces of these pulleys and the belt are substantially entirely covered by the belt cover upper 24a and the belt cover lower 24b.

At the top of both banks 2a and 2b, a camshaft 25a,
25b are installed rotatably. Timing pulleys 26a126b are fixed to the shaft ends of the camshafts 25a and 25b, respectively, and the boot 926
A, 26b and a timing pulley 27 fixed to the inside of the above-mentioned pulley 22 at the end of the crankshaft 21, a timing belt 30 is suspended via an idler pulley 2B and a tension pulley 29, so that both cams are Shafts 25a and 25b are configured to rotate in conjunction with crankshaft 21.

The above-mentioned crankshaft timing pulley 27 and camshaft timing pulley 26a126b have a speed ratio of 1:2, so that the camshafts 25a and 25b rotate once while the crankshaft 21 rotates twice. ing.

The above-mentioned camshaft timing pulleys 26a, 26
b is when the crankshaft 21 is in the position shown in Fig. 2 (h1
Since the timing pulley 26a rotates in the circumferential direction, a greater tension is applied to the timing pulley 26a on the right side than on the timing pulley 26b on the left side.

Therefore, the timing pulleys 26a, 26b of these double force pulleys 77] and 31, the timing pulley 2 on the tight side
It can be said that the rotation precision of the crankshaft 6a with respect to the crankshaft 21 is higher. Therefore, as shown in this embodiment, the timing pulley 26a on the tight side is provided on the end face of the bank on the side that retracts from the end face of the cylinder block, the distributor 3 is provided on the shaft opposite to the bobbin of the camshaft, and the torque rod If 17 is provided on the bank side that is recessed and covered by the opposite side, no wasted space will be created.

<Effects of the Invention> As described above, according to the present invention, the torque [l] is located at a relatively advantageous position for receiving the engine drive torque reaction force without interfering with the attached equipment due to the extremely simple configuration. It is now possible to install a rad, which improves the vibration suppression effect.
- and can have a great effect on making the engine compartment more compact.

I can do it.

[Brief explanation of drawings]

FIG. 1 is a plan view of a V-type six-cylinder engine to which the present invention is applied. FIG. 2 is an elevational view of the engine shown in FIG. 1. 1...Engine 2a12b...Bank 3.
...Distributor 4...Plug cord 5...Intake manifold 6...Intake chamber 7...Throttle body 8
...Pump 9...Alternator 8a', 9
a... Pulley 10... Fuel injection valve 11... Fuel pipe 12... Controller 13... Cylinder block 14... Bracket 15... Clutch housing 16... Dash board 17... Torque rod 2
1... Crankshaft 22... Pulley 23... Belt 24a...
・Belt cover upper 24b...Belt cover lower 25a, 25b...Camshaft 26a, 26b, 27...Timing pulley 28...
...Idler pulley 29...Tension pulley 30...
・・Timing belt −1〇 −

Claims (1)

[Claims] A pair of cylinder banks along the crankshaft are formed in a V-shape and offset from each other in the direction of the crankshaft, and the engine body mounted along the width direction of the vehicle body is connected to the vehicle body. A mounting structure for a torque rod in a V-type engine for use in a V-type engine, wherein the torque rod is installed at one end located near the crankshaft direction end of the cylinder bank on the side recessed by the offset, and at the rear wall of the engine room of the vehicle body. 1. A mounting structure for a torque rod in a V-type engine, characterized in that the torque rod has a curved end.