JPS5872620A - Timing belt cover of automobile engine - Google Patents

Abstract

PURPOSE:To improve freedom of arragning engine accessory parts for each variation, by allowing a timing belt cover to function as a bracket for mounting the engine accessory parts. CONSTITUTION:An automobile engine, in which a timing belt cover 10 and the like, covering a timing belt V and pulleys of a crank pulley A and water pump pulley B or the like, are provided and fixed by bolts to the front face of a cylinder block 1, is constituted in such a manner that a boss part 14a is provided to an external surface of the cover 10 and engine accessory parts of a cooling fan device 20 and the like are mounted and supported to said boss part. In this way, in no relation to a position of the timing belt and various pulleys, housed in the inside, the engine accessory parts can be mounted to any position, only if in a plane of the cover 10, and the freedom of arrangement for each variation can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a separate timing belt cover fixed to the front surface of a cylinder boot stock of an automobile engine with bolts;
In particular, it relates to a timing belt cover that has other functions.

In an engine for a car, a timing belt and various pulleys are placed in front of the cylinder block and cylinder head (in the opposite direction from the flywheel), and a separate timing belt cover is used to cover these. It is attached through. This timing belt cover is generally made of resin or die-cast aluminum and is of an integral, two-part, or five-part type. Engine accessories such as a cooling fan device are arranged in front of the timing belt cover.

Conventionally, the attachment of the accessory parts placed in front of the timing belt cover was supported by providing a bolt hole in the front of the cylinder brick at a position avoiding the timing belt and boots, etc., and using a bracket fixed to this bolt hole with a mounting bolt. This is done using the same technology, and parts are installed for each Parigny Chiron depending on the car model.

However, in the above-mentioned conventional configuration, there is almost no flexibility left for each paring machine and for changing the mounting position of the engine attachment parts. In particular, the same engine is used in front-engine, rear-drive vehicles (hereinafter referred to as
FR cars), front engine/flint drive cars (hereinafter referred to as FF cars), and yams are installed vertically and horizontally, respectively!
In this case, the above-mentioned problem is serious because the parts required to be attached to the front surface of the engine are significantly different from ξ.

Furthermore, the bracket that attaches and supports engine accessories such as the cooling fan device is placed in front of the timing belt cover with a predetermined gap, which increases the overall length of the engine.

Special number ζ is an obstacle in installing the engine horizontally in small FF cars.

SUMMARY OF THE INVENTION An object of the present invention is to improve the degree of freedom in arranging engine accessories for each engine cylinder.

Another object of the present invention is to shorten the overall length of the engine and improve the ease of mounting it on a vehicle.

Another object of the present invention is to make it possible to easily mount the same engine in both vertical and horizontal configurations in FR vehicles and FF vehicles, respectively, with a slight structural change.

In order to achieve the above object, there are nine configurations of the present invention.

A boss is provided on the outer surface of the timing belt cover.

The engine accessory parts are mounted and supported on this boss part, and the timing belt cover has a function as a bracket for mounting the engine accessory parts.

With such a configuration, it is possible to achieve the intended purpose of (a) increasing the degree of freedom in arranging engine accessory parts for each pariege engine, and ←) shortening the overall length of the engine. (c) With a slight structural change, the same engine can be easily installed in a PR car and a FF car in both vertical and horizontal positions. ) The number of parts can be reduced. (E) −
It has excellent effects such as improved quantity and reliability, and improved assembly workability.

Next, nine specific embodiments of the present invention will be described in detail with reference to the drawings.

1 to 5 show a first embodiment of the present invention. FIG. 1 is a schematic front view of an engine with a timing belt cover installed, and FIG. 2 is a view taken along line 1-1 in FIG. 1. FIG. 115 is an enlarged partial sectional view showing the main part in cross section, and FIG. 115 is an enlarged perspective view of the main part.

The first embodiment relates to an engine mounted vertically in a PR vehicle, and will be explained using a diesel engine as an example.

Various auxiliary equipment are arranged in front of the engine, and many pulleys are provided. In Fig. 1, A is a crank pulley as a driving pulley fixed to a crankshaft S, and a system is adopted in which a number of pulleys are driven by a single timing belt V using the driving force of this crank pulley A. .

The water pump pulley B, ink exhaust W pump pulley C, camshaft timing pulley 9D, tension engine pulley E, oil bomb pulley F, and idler pulley G are arranged in this order along the driving direction (arrow 1 direction) Iζ of the crank boom rim. There is.

A timing belt cover 1O for learning the timing belt V and the timing belt G is fixed to the cylinder block 1 and the cylinder head 2 with bolts via a rubber gasket (not shown). This belt cover 10 includes an upper cover 12. It is configured as a 5-piece structure consisting of a center cover 1 bar and a lower cover 16. 9. The upper cover 12 and the lower cover 16 are made of resin, and the center cover 14 is made of aluminum die-casting. Rubber gaskets for sealing between each cover
is mediated.

As shown in detail in FIG. 2, a boss portion 1 for mounting and supporting a cooling fan device 20 is integrally formed on the outer surface of the center cover 14 of the tie belt cover 10. A radial rib 14b is integrally molded around the boss portion 14 for reinforcement.

De#XII 14m +7) Hole 14・Inner ICI! - The fan coupling mounting shaft 22 is rotatably supported by the hair link 21m #21b. A pulley seat 25 is integrally fixed to the shaft 22 by appropriate means. 1tGpv-e This pulley seat 25Fe is connected to the drive shaft 2 of the fan 926 and fan coupling 28 by the bolt and nut 25.
7 are fixed together.

The cooling fan device 20 is configured by connecting the fan a to be driven via the fan coupling 28 .

A fan belt V' driven by a crank pulley disposed in front of the belt cover IO is hung on the fan pulley 26 of the cooling device 20, which is attached and supported by the boss na, together with the alternator boot 9H.

In addition, in Figure 2, '5 Hiro Shibundagasuke, To.

The barrel is fixed to the front of the cylinder block l and the water 9
A cover forming a part of the jacket 5, 6 a bearing for the tension change pulley E, 7 a sleeve to which the inner ring of the bearing 6 is fixed, and g a bolt for fixing the tension change pulley 9g to the cylinder head 2. Furthermore, the timing belt cover 14 shown in FIG. 5 has ribs from the top to make the structure easier to understand.

Bolts and bolt sizes (partially) are omitted.

In the first embodiment having the above configuration, when the crankshaft S rotates in the direction of the arrow 1 in FIG.

The injector 1 input pulley C, camshaft timing boot 9D, tension, pulley 11:, oil input pulley F, and idler boot 9G are driven in this order. At the same time, the fan belt 7, which is hooked on the crank pulley I placed in front of the timing belt cover 10, is operated at 7 amps 926. Alternator pulley H is also driven.

In this embodiment, the receiver has the function of a fan bracket in addition to its original function as a timing belt cover.

Next, FIG. 4 shows a second embodiment of the present invention, and is an enlarged perspective view of essential parts similar to FIG. 5.

The second embodiment relates to an engine mounted in a horizontal hall in a front-wheel drive vehicle, and uses the same (common) engine as the first embodiment described above.

Since the front of a horizontally mounted engine is located on one side of the vehicle, the parts that need to be attached to the front of the engine are significantly different from those of the vertically mounted engine described above.

When the FW*VC horizontal installation is achieved, a mount insulator 50 is placed in front of the engine.

Therefore, in the second embodiment, a boss portion 140 for mounting and supporting the mount insulator 50 is integrally carved on the outer surface of the timing belt cover (center cover) 140.

The mount insulator 30 includes an outer cylinder 51. which is attached to the engine side. It is composed of an inner cylinder 32 to be attached to the vehicle body and a vibration isolating rubber 53 interposed between the two. Specifically, a mounting plate 54 is in contact with the outer cylinder IK, and two mounting bolts 55 are integrally fixed to this mounting plate row by means such as press-fitting with a serration. ing. Then, by passing the mounting bolt 55 through the large circle of the boss portion In0A and tightening it with the seat nut 56, the mount insulator 30 is mounted and supported on the timing belt cover 140.

Further, the timing belt cover 140 is made of cast iron in terms of strength.

The size of the bolts for mounting the timing belt cover 1110 to the cylinder block 1) is vertically mounted.
It should be installed on a common horizontal engine. (The position of the mounting bolt hole 14d in the first embodiment is the same as that of the first embodiment.)

In this embodiment, in addition to its original function as a timing belt cover, the receiver also functions as an engine mount bracket.

As explained above, one aspect of the present invention is to provide a boss part on the outer surface of a timing belt cover that is fixed to the front surface of a cylinder block with bolts, and to attach and support engine accessories to this boss part. Regardless of the position of the timing belt and various pulleys housed in the timing belt cover, it is possible to install engine accessories at any position within the plane of the timing belt cover.
The degree of freedom in the arrangement of the components can be improved.

[Brief explanation of the drawing]

1II to 113 show a first embodiment of the present invention, in which FIG. 1 is a schematic true view of the engine with a timing belt cover installed, and FIG. 2 is taken along line 1"-1 in FIG. FIG. 5 is an enlarged partial cross-sectional view showing the main part in cross section, and FIG. 5 is an enlarged perspective view of the main part similar to the above-mentioned FIG. M, N...Crank pulley, B...Water pump pulley, C-・Injection pump pulley, D-・
Camshaft timing pulley IEj e*・tenle. Mbu 9. F-...Oil 4-pulley, G--Idler pulley, H--Alternator pulley, Il...Rank shaft, V...Timing belt, V-
...Fan belt, 1-...Cylinder block, 10
．． 12.114.16゜140-timing belt cover, 1411, 11i0 toe, 1xll&, 1)
1.1 soa-@ with *#) hole, 20-・Cooling fan device e 21a'e 22b"" Bearing e 22
...7 y: 'Coupling mounting shaft, 2
5--Pulley seat. 26--Fan pulley, 27--Drive shaft, 28
...Fan Cup Lang, 29...F1n, 50.
-Mount insulator, 51-Outer cylinder, 52-Inner cylinder, 55-Vibration-proof rubber. Martyr...Mounting plate, 55-...Mounting bolt, 56--Natsuto Patent Applicant TO1 Automobile Industry Group Company Representative Mori 1) Toshio No. 1 Drawing Procedure Amendment 1' fy 1i) 11th Edition 't7 - May 2015 - Commissioner of the Japan Patent Office Shima - Inquiry 1. Indication of the case 1982 Patent Application No. 17002 2. Title of the invention - Ninja engine tie Nanda belt l) Bar 5. Person making the amendment Relationship to the case Patent applicant

Claims (1)

[Scope of Claims] (ri) An automobile engine having a separate timing belt cover fixed to the front surface of a cylinder block with bolts and covering a timing belt and a pulley, wherein a boss portion is provided on the outer surface of the belt cover, A timing belt cover for an automobile engine, characterized in that engine accessory parts are attached to and supported by the boss part (21) The above UIj car engine is a front engine
Timing belt cover according to claim 1, characterized in that it is a vertically mounted engine in a rear-drive vehicle (3) Timing belt cover according to claim 1, characterized in that the engine accessory parts are engine auxiliary equipment The tie belt cover (4) according to claim 2, wherein the engine auxiliary equipment is a cooling fan device; The fan device includes a bearing fixed in the boss portion of the belt cover, a fan coupling mounting shaft rotatably supported by the lI bearing, a boot seat fixed to the shaft, and a fan fixed to the boot seat. Claim 4, characterized in that it consists of a pulley, a fan coupling, and a fan.
The timing belt cover described in Claims 1 to 3 is characterized in that the belt cover is made of aluminum die-casting.
Timing belt cover (7) according to any one of claims 5 to 6. The timing belt cover according to claim 1, wherein the engine for a personal vehicle is a horizontally mounted engine in a front engine-front drive vehicle. Belt cover (8) The tying belt cover according to claim 7, wherein the engine accessory part is a mount insulator (9) The mount insulator is a boss of the belt cover. Part number ζ Consists of an attached black outer cylinder, a cylinder installed on the vehicle body side, and a vibration-proof rubber interposed between the two.
The timing belt cover according to claim 8, characterized in that the mounting plate welded to the outside 11 is fixed to the boss part number ζ of the belt cover with a mounting bolt and nut. By doing so. A belt cover according to claim 9, characterized in that the belt cover is mounted and supported by the belt cover. Any E from range 7 to 10
Timing belt cover (2) The above belt cover comes in two types with different bosses for attaching engine accessories to be attached to vertically and horizontally mounted common engines, and also has mounting bolts to the cylinder block. The timing belt cover according to claim 1, wherein the hole positions are set to be the same.