CN1312387C - Anti-greasy dirt structure for internal combustion engine - Google Patents

Abstract

An anti-oil pollution structure of an internal combustion engine, the internal combustion engine is equipped with an auxiliary device (10), at least one of which has a cylindrical oil filter box (11) erected obliquely and built in an oil filter component, and the cylindrical oil filter box (11) An opening is formed on the upper part of the filter box (11), and a cover member (14) is detachably embedded in the opening, and an oil-proof cover (27) is provided on the lower side of the cylindrical oil filter box (11). Thereby, when the oil filter member is replaced, the equipment around the oil filter is prevented from being contaminated with oil.

Description

Anti-oil structure of internal combustion engine

technical field

The present invention relates to an oil stain preventing structure for preventing oil from dripping from the oil filter and adhering to the cylindrical oil filter case and its peripheral equipment when an oil filter part is taken out from the cylindrical oil filter case having an opening at the top .

Background technique

A conventional internal combustion engine has at least an oil filter, and an auxiliary device that integrates a plurality of auxiliary machines, cooling water passages, or lubricating oil passages.

In this internal combustion engine, when an oil filter member as a replacement part is replaced, oil may spill from the oil filter and adhere to an auxiliary machine or the like, and the oil may scatter when the auxiliary machine is in operation to contaminate the surrounding area.

Patent Document 1 JP-A-2002-174125

Contents of the invention

The problem to be solved by the present invention is to prevent in advance oil contamination of the machines surrounding the oil filter when replacing the oil filter parts.

According to the oil pollution prevention structure of an internal combustion engine according to the first aspect of the present invention, the internal combustion engine is equipped with an auxiliary device, which at least integrally has a cylindrical oil filter box that is erected obliquely and has an oil filter component built in it. An opening is formed on the upper part of the cylindrical oil filter box, and a cover member is detachably embedded in the opening. It is characterized in that an oil-proof cover is provided on the lower side of the cylindrical oil filter box; Another auxiliary machine different from the auxiliary machine device is arranged near the cylindrical oil filter box, and the oil pollution prevention cover covers the upper part of the auxiliary machine along the shape of the auxiliary machine and maintains a specified gap.

The present invention according to the second aspect of the present invention is that in the oil pollution prevention structure of the internal combustion engine according to the first aspect of the present invention, it has the following features: Using the opening, a cutout portion is formed in the oil-proof cover along the opening for ventilation, and a guard portion covering an upper portion of the cutout portion is provided above the cutout portion.

According to the first aspect of the present invention, an anti-oil cover is provided on the lower side of the cylindrical oil filter box, and when the oil filter parts in the cylindrical oil filter box are taken out, even if the oil drips from the oil filter parts taken out Falling oil droplets can also prevent oil from adhering to the peripheral portion of the oil filter through the oil-proof cover, so that the oil pollution phenomenon of the peripheral portion of the oil filter can be prevented in advance.

Therefore, problems due to oil contamination can be reliably prevented.

Furthermore, according to the first aspect of the present invention, it is possible to prevent other auxiliary machines provided near the cylindrical oil filter box from being polluted by oil.

In addition, the anti-oil cover covers the upper part of the auxiliary machine with a predetermined gap with respect to the shape of the auxiliary machine, so it is possible to cut off the thermal influence on the auxiliary machine from the outside, and at the same time, it can prevent the anti-oil cover and the auxiliary machine from vibrating due to the vibration of the internal combustion engine or the vehicle on which the internal combustion engine is installed. The collision of the machine produces noise.

According to the second aspect of the present invention, in consideration of heat generation from the generator, openings for ventilation are formed on the peripheral surface of the generator, and the heated air in the generator is discharged to the outside through the openings for ventilation, thereby suppressing the temperature inside the generator. Even if the outer periphery of the generator is covered by an oil-proof cover, a slot is formed in the oil-proof cover corresponding to the ventilation opening on the peripheral surface of the generator, so the heated air in the generator can pass through the ventilation opening. Openings and cutouts allow smooth discharge to the atmosphere and reliably cool the inside of the generator.

In addition, above the cutout portion of the oil stain-proof cover, a shield portion covering the upper portion of the cutout portion is provided. The oil droplets falling above the groove portion can prevent the oil droplets from adhering to the generator below the oil-proof cover in advance.

Therefore, it is possible to maintain a high level of heat dissipation of the generator, reliably prevent oil droplets from adhering to the generator, and further improve the reliability of the internal combustion engine.

Description of drawings

Fig. 1 is an overall perspective view of an internal combustion engine having an oil pollution prevention structure of the present invention.

Fig. 2 is an overall perspective view of the auxiliary device of the best mode.

Fig. 3 is an overall perspective view of the oil pollution prevention cover.

Fig. 4 is a top view of the oil-proof cover.

Fig. 5 is a view taken along the line V-V in Fig. 4 .

Figure 6 is a right side view of the alternator with the oil shield installed.

Fig. 7 is a right side view corresponding to Fig. 6 in another form.

Fig. 8 is a right side view when the right end protective cover of the alternator is removed in another manner.

Symbol Description

1 internal combustion engine; 2 crankshaft; 3 cylinder block; 4 lower body; 5 chain box; 6 auxiliary engine drive pulley; 7 auxiliary engine device; 8 pump casing; 9 pump driven pulley; 10 oil filter; 11 cylindrical oil filter 12 flange part; 13 oil filter part; 14 cover part; 15 automatic tensioner; 16 fitting recess; 17 alternator; 18 driven pulley; 19 bracket; 20 bolt; 22 compressor driven pulley; 23 hydraulic pump for hydraulic power steering; 24 pump driven pulley; 25 tension pulley;

Detailed ways

Hereinafter, the best mode for carrying out the present invention shown in FIGS. 1 to 6 will be described.

The internal combustion engine 1 to which the anti-oil pollution structure of the present invention is applied is an overhead camshaft type water-cooled four-cylinder four-stroke cycle internal combustion engine in series, and the internal combustion engine 1 is mounted on a On the automobile, the drive system of the auxiliary machine is arranged on the right side of the vehicle body of the internal combustion engine 1 (the front side in FIG. The crankshaft 2 is rotatably supported on a joint surface (not shown) with the lower block 4, and the crankshaft 2 penetrates the right side of the vehicle body covering the cylinder block 3, the lower block 4, and the cylinder head, not shown. The chain case 5 of the crankshaft 2 is integrally fitted with an auxiliary machine drive pulley 6 at the right end (the front end in FIG. 1 ) of the crankshaft 2 .

In addition, on the right side of the vehicle body front (right in FIG. 1 ) of the internal combustion engine 1, an aluminum alloy auxiliary device 7 as shown in FIG. The pump casing 8 of the cooling water pump, the cylindrical oil filter case 11 of the oil filter 10, the fitting recess 16 of the automatic tensioner 15, and the oil cooler not shown, the pump casing 8, the cylindrical filter case The oil tank 11 and the fitting recess 16 are integrally cast by die casting or the like.

In addition, the upper portion of the cylindrical oil filter case 11 of the oil filter 10 is inclined toward the front of the vehicle body, and a flange portion 12 is integrally protruded from the outer circumference of the cylindrical oil filter case 11 (or It is formed so that the rear left side of the vehicle body is missing, but surrounds the cylindrical oil filter box 11), and the oil filter member 13 is installed on the cylindrical oil filter box 11 in a freely insertable and detachable manner, and the cover member 14 can be attached and detached. Fitted in the opening 11a of the cylindrical oil filter box 11, the cooling water pump body (not shown) is fitted in the pump casing 8 to form a cooling water pump, and fitted in the fitting recess 16 of the automatic tensioner 15 The main body of the automatic tensioner 15 constitutes the automatic tensioner 15 .

In addition, the alternator 17 is arranged in front of the lower side of the cylindrical oil filter box 11 of the oil filter 10 of the auxiliary equipment 7, and the front end screws of the four bolts 20 of the upper, lower, left, and right brackets 19 of the alternator 17 are passed through. The alternator 17 is attached to the main body of the auxiliary device 7 so that the alternator 17 is detachably attached to the auxiliary device 7 .

And, as shown in FIG. 1 , the air-conditioning compressor 21 located on the lower right side of the alternator 17 is integrally installed on the lower body 4 of the internal combustion engine 1 , and the hydraulic power steering device located at the rear upper part of the oil filter 10 The hydraulic pump 23 for power steering is integrally installed on the cylinder block 3 or the cylinder head not shown in the figure, and the tension pulley 25 is installed on the cylinder block 3 above the automatic tensioner 15 and on the front side. Auxiliary drive pulley 6 of crankshaft 2, pump driven pulley 9 of cooling water pump, compressor driven pulley 22 of air conditioner compressor 21, tension pulley 25, driven pulley 18 of alternator 17, hydraulic power The pump driven pulley 24 and the automatic tensioner 15 of the steering gear hydraulic pump 23 are placed on the endless conveyor belt 26. When the auxiliary machine drive pulley 6 integrated with the crankshaft 2 rotates, the pump driven pulley 9, compressor The driven pulley 22, the driven pulley 18, and the pump driven pulley 24 are driven to rotate together, and the cooling water pump, the air conditioner compressor 21, the alternator 17, the air conditioner compressor 21, and the oil pressure for the hydraulic power steering The pump 23 is in working condition.

When installing the alternator 17 to the auxiliary equipment 7, the bolts 20 first pass through the bolt through holes 27g of the oil-proof cover 27 formed in the shape shown in FIGS. The bracket 19 of the motor 17 is screwed into a screw hole (not shown) in the main body of the auxiliary device 7 , and the anti-oil cover 27 is fixed on the auxiliary device 7 together with the alternator 17 .

However, as shown in FIG. 2 , the alternator 17 is disposed more to the right than the cylindrical oil filter case 11 of the oil filter 10 , and the upper left bracket 19 b is lower than the upper right bracket 19 a. , so as shown in Fig. 3 and Fig. 4, the plane shape of the oil-proof cover 27 is not a left-right symmetrical shape, but is formed so that the rear right side 27a of the oil-proof cover 27 is larger than the rear left side 27b of the oil-proof cover 27. It extends further to the rear and is located above the rear left side portion 27b of the oil protection cover 27 (see FIG. 5 ).

And, as shown in FIG. 5 , in order to make the bracket 19a more closely contact the front of the bracket 19b, the roughly front and rear central portion 27c of the oil-proof cover 27 is formed as a stepped flat surface. The rear right portion 27a and the rear left portion 27b are obliquely curved rearward and upward, and the curved front portion 27d substantially in front of the front-rear central portion 27c is formed in an arcuate shape curved along the peripheral surface of the alternator 17 .

In addition, on the rear right side part 27a, rear left side part 27b, approximately front and rear central part 27c, and curved front part 27d of the oil pollution prevention cover 27, reinforcing ribs 27e are arranged vertically and horizontally toward the upper side. From the upper rear side edge of the rear left side portion 27b to its left and right side edges and approximately the front and rear central portion 27c, and the left and right side edges of the curved front portion 27d, curved edge portions 27f are formed to stand upward, and are formed at approximately two left and right sides of the front and rear central portion 27c. Bolt holes 27g corresponding to bolt insertion holes (not shown) of the brackets 19a and 19b are formed on the flat surface.

In addition, the curved edge portion 27f of the rear right side portion 27a of the oil-proof cover 27 is not in close contact with the cylindrical oil filter case 11 of the oil filter 10, but is separated by a predetermined gap, and the oil-proof cover 27 is integrally formed. Mounted on the bracket 19a and the bracket 19b of the bracket 19 .

In the illustrated state of FIGS. 1 to 6 , a flange portion 12 substantially along a horizontal plane is formed on the outer peripheral surface of the cylindrical oil filter case 11 of the oil filter 10 , and a flange portion 12 located on the oil filter 10 The top of the alternator 17 below the side of the direction of toppling of the cylindrical oil filter case 11 is provided with an anti-oil cover 27 along the peripheral surface of the alternator 17, so when the oil filter member 13 needs to be replaced, the When the cylindrical oil filter case 11 of the oil filter 10 is taken out of the oil filter member 13, even if the oil adhering to the oil filter member 13 falls, it falls on the opening 11a of the cylindrical oil filter case 11. The oil in the vicinity is also blocked on the upper surface of the flange portion 12 , so that oil can be prevented from flowing downward along the peripheral surface of the cylindrical oil filter case 11 .

And, if the oil adhering to the oil filter member 13 drops, since the oil-proof cover 27 is arranged under it, the dripped oil can be blocked by the oil-proof cover 27, and the AC power generation can also be prevented in advance. Engine 17 and other components in the engine room are contaminated by oil.

In addition, since the oil adhering to the flange portion 12 and the oil stain cover 27 can be easily wiped off with a cloth or the like, the engine compartment can be kept clean.

In addition, even if the oil adhering to the anti-oil cover 27 drips downward from the curved front portion 27d of the anti-oil cover 27, there are no other components or vehicle body parts below it, so if the bottom plate below the oil filter 10 Put the oil container etc. on the surface, then the auxiliary machine and other parts or the car body and the bottom plate will not be polluted by oil.

In addition, since the curved front portion 27d of the oil-repellent cover 27 is bent at predetermined intervals along the outer peripheral surface of the alternator 17, air and cold wind can sufficiently contact the outer peripheral surface of the oil-resistant cover 27, thereby maintaining the heat dissipation of the alternator 17. .

Moreover, the anti-oil cover 27 does not contact the cylindrical oil filter case 11 of the oil filter 10 and other parts of the auxiliary equipment 7 other than the alternator 17, so there is a certain error in the size of the anti-oil cover 27, which is not affected. The influence of the vibration of the cylindrical oil filter case 11 and other components suppresses the generation of abnormal sound.

In the state shown in FIGS. 1 to 6, the curved front portion 27d of the anti-oil cover 27 is away from the outer peripheral surface of the alternator 17, but as shown in FIG. In the alternator 17 of the opening 17b, as shown in FIG. 7, if the up-and-down steps between the rear right side 27a and the rear left side 27b of the oil-proof cover 27 are reduced, the curved front of the oil-proof cover 27 can be made The portion 27d is close to the peripheral surface of the alternator 17 .

In this case, as shown in FIG. 8 , if a plurality of cool air discharge openings 17 b are formed on the outer peripheral wall 17 a of the alternator 17 along the entire circumferential direction, and cold air introduction openings are formed on both end faces of the alternator 17 In the alternator 17 of the port 17c (not only the right end side shown in the figure, but also the cold air inlet port on the left end face side), a cutout is formed in the curved front portion 27d of the anti-oil cover 27 at a position corresponding to the cold air discharge opening 17b. At the same time, a shield portion 27i covering the notch portion 27h is formed above the notch portion 27h, and the air is sucked into the alternator 17 from the cold air inlet 17c of the alternator 17 and passed through the alternator 17. The not-shown rotor makes the intake air discharge into the atmosphere along the cold air discharge opening 17b and through the cutout portion 27h, thereby making the alternator 17 including the oil-proof cover 27 a compact structure, which can greatly improve the performance of the alternator. The cooling state of the alternator 17.

Claims (2)

1. the anti-greasy dirt structure of an internal-combustion engine, this internal-combustion engine possesses auxiliary machinery device, it has the tubular oil purifier case that erect, that be built-in with the oil purifier parts of inclination at least integratedly, opening is formed at the top at this tubular oil purifier case, setting-in cover releasably on this opening, it is characterized in that, Dirt-proof hood is set at the downside of described tubular oil purifier case; The subsidiary engine of other different with described auxiliary machinery device is set near the described tubular oil purifier case of described internal-combustion engine, and described Dirt-proof hood is along the shape of described subsidiary engine and keep a specified gap to cover above this subsidiary engine.

2. the anti-greasy dirt structure of internal-combustion engine according to claim 1, it is characterized in that, described subsidiary engine is a generator, side face at this generator forms the ventilation opening, on described Dirt-proof hood, form grooving portion with opening, the guard section that covers grooving portion top is set above this grooving portion simultaneously along described ventilation.

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