CN1172920A - Transmission case cover structure for internal combustion engine - Google Patents

Transmission case cover structure for internal combustion engine Download PDF

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Publication number
CN1172920A
CN1172920A CN 97115130 CN97115130A CN1172920A CN 1172920 A CN1172920 A CN 1172920A CN 97115130 CN97115130 CN 97115130 CN 97115130 A CN97115130 A CN 97115130A CN 1172920 A CN1172920 A CN 1172920A
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CN
China
Prior art keywords
oil cylinder
fitting surface
end cap
cover
cylinder group
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Granted
Application number
CN 97115130
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Chinese (zh)
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CN1069392C (en
Inventor
神谷雅久
深城准也
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Suzuki Motor Corp
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Suzuki Motor Corp
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Publication of CN1172920A publication Critical patent/CN1172920A/en
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Publication of CN1069392C publication Critical patent/CN1069392C/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M1/00—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds
    • F16M1/02—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds for reciprocating engines or similar machines
    • F16M1/026—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds for reciprocating engines or similar machines for housing movable engine or machine parts other than crankshafts, e.g. valve-gear housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1824—Number of cylinders six
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The chain cover (36) is for an engine (2) with first and second cylinder heads (8) on a V-shaped cylinder block (4), with two rows (10,12) of which the second is offset towards one end of the crankshaft. The valves are operated by a power transmission and driving device. The chain cover fits round this device. It is fitted to the first and second cylinder heads and to the cylinder block. It has first and second mating surfaces (38,40) on the cover side. The first is in contact with the block and one head (6), and the second with the lock and the other head (8). The second one has an outward projection (64).

Description

The cover structure of the transmission case of internal-combustion engine
The present invention relates to a kind of cover structure of transmission case of internal-combustion engine.More particularly, the present invention relates to a kind of like this cover structure of transmission case of internal-combustion engine, second fitting surface that is exactly its end cap side can improve sealability effectively, to prevent oil seepage; Make local change in shape by second fitting surface to the end cap side, above-mentioned purpose just can be achieved at an easy rate, does not need to increase too much cost and weight, also need not change process equipment and/or installation work-hour.
Vehicular internal combustion engine and similar internal-combustion engine can be divided into word order, arrangement relatively, V-arrangement is arranged and the internal-combustion engine of other arrangement mode.Arrange the equal succession of oil cylinder of the internal-combustion engine of word order mode; The oil cylinder of the internal-combustion engine of arrangement mode is divided into two rows relatively, constitutes arrangement one to one between row and row; The oil cylinder of the internal-combustion engine of V-arrangement arrangement mode is arranged with being in the shape of the letter V.
Fig. 4 to Fig. 6 is the example that V-arrangement is arranged internal-combustion engine.In Fig. 4, internal-combustion engine of code 102 expressions; 104 expression oil cylinder groups; 106 expressions, first oil cylinder cover; 108 expressions, second oil cylinder cover; 110 expressions, first oil cylinder row; And 112 expressions, second oil cylinder row.Be connected on the V-shaped in essence oil cylinder group 104 by the sealing gasket 114 and 116 of first and second oil cylinder covers respectively at internal-combustion engine 102, the first and second oil cylinder covers 106 and 108, thereby formed first and second oil cylinders row 110 and 112 that V-arrangement is arranged.
As shown in Figure 5, between first bolt hole 118 of first oil cylinder cover 106 of internal-combustion engine 102 and second bolt hole 120 of second oil cylinder cover 108 offset or dish " a " is arranged, first oil cylinder of oil cylinder group 104 row 110 the first cylinder barrel (not shown) and second oil cylinder of oil cylinder group 104 are arranged between 112 the second cylinder barrel (not shown) also the Offset identical with above-mentioned offset or dish.Therefore, first oil cylinder of internal-combustion engine 102 row, 110 and second oil cylinder is arranged between 112 is also having an offset or dish " a " on the direction of the axis " A " of the bent axle of internal-combustion engine 2, and biased direction is pointed to an end of this bent axle.
First oil cylinder row 110 of internal-combustion engine 102 has an offset or dish with respect to second oil cylinder row 112 on the axial direction of the bent axle that points to bent axle one end, in this internal-combustion engine 102, be provided with a regularly driving mechanism 122, be the power transmission mechanism that valve drives, it is provided with the position at the end place along the bent axle of crankshaft center line " A ".
Regularly driving mechanism 122 is by end cap 124 sealings.End cap 124 has first and second fitting surfaces 126 and 128 of both sides.First and second fitting surfaces 126 and 128 have the boss 130 and 132 of first and second construction bolts respectively.Say further, be respectively equipped with mounting hole 134 and 136 on the boss 130 and 132.
First and second construction bolts 138 pass respectively in the mounting hole (not shown) that end cap 124 penetrates first and second oil cylinder covers 106 and 108 sides, with being threaded on the oil cylinder group 104.End cap 124 has sealed regularly driving mechanism 122, and is installed on oil cylinder group 104 and first and second oil cylinder covers 106 and 108 at an end place of bent axle.Thereby chamber 142 has just formed.
As shown in Figure 6, in the position that oil cylinder group 104, second oil cylinder cover 108 are connected with end cap 124, there is a gap L in internal-combustion engine 102.This gap L can cause the difference of manufacturing tolerances.Thereby the sealability of second fitting surface 128 that is used for the end cap that the fitting surface 146 with the oil cylinder cover side leans is relatively poor.
In order to prevent from chamber 142, to leak out owing to the former thereby lubricant oil that cause of above-mentioned poor sealing performance, be provided with the sealing gasket (not shown) in following gap, described gap is the gap between the fitting surface 146 of the fitting surface 144 of the fitting surface of end cap 124 and oil cylinder group 104 and second oil cylinder cover 108.
Although explanation does not leak out from chamber 142 in order to prevent lubricant oil, the position in that oil cylinder group 104 and first oil cylinder cover 106 are connected with end cap 124 also can be provided with similar sealing gasket (not shown).
The end cap of the internal-combustion engine that above-mentioned V-arrangement is arranged all has illustrated in Japanese patent application NO.4-63954 number and Japanese Utility Model patent application NO.4-119347 number.
According to the NO.4-63954 patent, the end place along the crankshaft center line direction at the bent axle of internal-combustion engine is provided with a cam drive, and the oil cylinder cover of this internal-combustion engine is installed on the oil cylinder group by sealing gasket.In addition, this cam drive has an end cap, and this end cap is installed on oil cylinder group and the oil cylinder cover.Furtherly, the shape of the sealing gasket of oil cylinder cover partly adapts with the shape of oil cylinder group, and the sealing pad is an elastic element.End cap just is installed on this elastic element.This elastic element is used to reach the purpose that makes seal oil.
The patent application according to NO.4-119347 is provided with sealing configuration between the oil cylinder group of internal-combustion engine and the transmission case, also is provided with sealing gasket between oil cylinder group and oil cylinder cover.The material of transmission case is different with the oil cylinder group.Adopted the material identical with the zone of the contacted oil cylinder group of transmission case with transmission case.In addition, the end face of oil cylinder group and oil cylinder cover sealing gasket lean, and the sealing pad leans with the bottom surface of oil cylinder cover again.
As mentioned above, between first oil cylinder of internal-combustion engine 102 row, 110 and second oil cylinder row 112 offset or dish is arranged, its biased direction is pointed to the end along crankshaft center line " A " direction of bent axle.Correspondingly, as shown in Figure 5, second oil cylinder row 112 also has an offset or dish " a " with respect to first oil cylinder row 110, and its biased direction is pointed to the other end of axis " A ".
Thereby the distance that bolt hole 120 to second fitting surfaces of second oil cylinder cover are 146 is greater than the distance of 148 of bolt hole 118 to first fitting surfaces of first oil cylinder cover.Second fitting surface 146 and second fitting surface 128 lean.First fitting surface 148 and first fitting surface 126 lean.
Thereby in the operation process of internal-combustion engine 102, oil cylinder group 104, second oil cylinder cover 108 and end cap 124 all can produce vibration.This vibration can worsen the sealability of following junction surface, and this junction surface is exactly that second fitting surface 146 of oil cylinder cover side cooperates the part that leans between 128 with second of end cap side.
For second oil cylinder row 112, inconvenience is also arranged, just be arranged on the insufficient rigidity of the chamber wall 150 on second fitting surface 146 of oil cylinder cover side, second fitting surface 128 sealability in vibration processes of end cap side also can descend, and also can cause the seepage of lubricant oil.
In order to improve the rigidity of chamber wall 150, can increase the number of second construction bolt 140, overcome above-mentioned inconvenience with this.Yet this measure has brought other inconvenience again, will change the shape of second oil cylinder cover 108 exactly, thereby has increased cost, has strengthened weight, increased the number of part, also needs to change processing and is provided with and installation work-hour.
In order to eliminate or to reduce above-mentioned inconvenience, the invention provides a kind of cover structure of transmission case of internal-combustion engine, this internal-combustion engine has first and second oil cylinder covers, first and second oil cylinder covers are separately positioned on the V-shaped in essence oil cylinder group, thereby formed first and second oil cylinders row of V-shaped arrangement, wherein between first oil cylinder row and second oil cylinder row offset or dish is arranged, its biased direction is pointed to an end of I. C. engine crankshaft axial direction, is provided with the power transmission mechanism that valve drives at the end place along its axial direction of bent axle; Be used to make the end cap of this power transmission mechanism sealing to be installed in first and second oil cylinder covers and oil cylinder group, the position of installing is at the end along its axial direction of bent axle, this end cap has first and second fitting surfaces, wherein first fitting surface and oil cylinder group lean, also lean with first oil cylinder cover, the oil cylinder group and first oil cylinder cover have been formed first oil cylinder row, simultaneously, second fitting surface and oil cylinder group lean, also lean with second oil cylinder cover, the oil cylinder group and second oil cylinder cover have been formed second oil cylinder row, and wherein said second fitting surface is provided with the protuberance that extends laterally.
Say further, the cover structure of the transmission case of above-mentioned internal-combustion engine is characterised in that, on described second fitting surface, be provided with protuberance, second fitting surface of end cap side extends to and surpasses a scope, this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder cover second fitting surface of oil cylinder group and second oil cylinder cover leans, and the oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.In addition, the feature of the cover structure of the transmission case of above-mentioned internal-combustion engine also is, on second fitting surface of end cap side, be provided with protuberance, the boss that second mounting hole of end cap side is arranged on this protuberance, on second fitting surface of end cap side, be provided with the such boss in two places, second fitting surface of end cap side extends to and surpasses a scope, this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder row's oil cylinder cover second fitting surface and second oil cylinder cover leans, and the oil cylinder group and second oil cylinder cover have been formed second oil cylinder and arranged.Say that further the feature of the cover structure of the transmission case of above-mentioned internal-combustion engine also is, is provided with protuberance on second fitting surface of end cap side, this protuberance extends to the outermost end of boss of second mounting hole of end cap side laterally.On second fitting surface of end cap side, be provided with the such boss in two places, second fitting surface of end cap side extends to and exceeds a scope, this scope is exactly the contacted zone of oil cylinder group second fitting surface of oil cylinder cover second fitting surface and second oil cylinder cover of oil cylinder group, and the oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.
The end cap of the cover structure of the transmission case of internal-combustion engine of the present invention is provided with outward extending protuberance at the second fitting surface place of its side, and it is provided with the end along its axial direction of position at I. C. engine crankshaft.Between first oil cylinder row of internal-combustion engine and second oil cylinder row offset or dish is arranged, biased direction is pointed to the end along its axial direction of bent axle.Second fitting surface of end cap side and oil cylinder group and second oil cylinder cover mutually against, the oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.Second oil cylinder row and first oil cylinder row also have an offset or dish, and biased direction is pointed to the other end of crankshaft center line direction.
Be provided with protuberance on second fitting surface of end cap side, this second fitting surface extends to and surpasses a scope, and this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder cover second fitting surface of oil cylinder group and second oil cylinder cover leans.The oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.In addition, be provided with protuberance on second fitting surface of end cap side, this protuberance is provided with the boss of second mounting hole of end cap side.On second fitting surface of end cap side, be provided with the such boss in two places.Second fitting surface of end cap side extends to and surpasses a scope, and this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder cover second fitting surface of oil cylinder group and second oil cylinder cover leans.The oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.In addition, be provided with protuberance on second fitting surface of end cap side, this second fitting surface extends to the outermost end of boss of second mounting hole of end cap side laterally.On second fitting surface of end cap side, be provided with the such boss in two places.Second fitting surface of end cap side extends to and surpasses a scope, and this scope is exactly the contacted zone of oil cylinder group second fitting surface of oil cylinder cover second fitting surface and second oil cylinder cover of oil cylinder group.The oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.
Protuberance on the end cap of the cover structure of transmission case makes the rigidity of second fitting surface of this end cap side improve.Second fitting surface of this end cap side extends to and surpasses a scope, and this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder cover second fitting surface of oil cylinder group and second oil cylinder cover leans.The oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.
Below in conjunction with accompanying drawing, describe the present invention.
Fig. 1 is the front elevation of the internal-combustion engine transmission case of one embodiment of the present of invention;
Fig. 2 is that cross-sectional view is amplified in the part along the 2-2 line in Fig. 1; With
Fig. 3 is the plan view of oil cylinder group.
Fig. 4 is the front elevation of the internal-combustion engine transmission case of existing technology;
Fig. 5 is that cross-sectional view is amplified in the part along the 5-5 line in Fig. 4; With
Fig. 6 is along the local enlarged side view of arrow 6 directions in Fig. 4.
In conjunction with Fig. 1 to Fig. 3 one embodiment of the present of invention are described now.
In Fig. 1, internal-combustion engine of code 2 expressions; Oil cylinder group of code 4 expressions; Code 6 expressions first oil cylinder cover; Code 8 expressions second oil cylinder cover; Code 10 expressions first oil cylinder row; Code 12 expressions second oil cylinder row.
On the V-shaped in essence oil cylinder group 4 of internal-combustion engine 2, be provided with first and second fitting surfaces 14 and 16 of oil cylinder cover, and on first and second oil cylinder covers 6 and 8, be provided with first and second fitting surfaces 18 and 20 of oil cylinder group respectively.
First and second fitting surfaces 18 of oil cylinder group with 20 respectively the sealing gasket 22 by first and second oil cylinder covers with 24 and closely be connected mutually with 16 with first and second fitting surfaces 14 of oil cylinder cover.Under this state, oil cylinder cover bolt (not shown) is screwed to oil cylinder group 44 from the side.In a word, the oil cylinder group 4 of internal-combustion engine 2 is provided with first and second oil cylinder covers 6 and 8, and first and second oil cylinders row 10 and 12 arrangement that is in the shape of the letter V.
As shown in Figure 2, the bolt hole 30 of first oil cylinder cover 6 has an offset or dish with respect to the bolt hole 32 of second oil cylinder cover 8, and this distance is represented with " a " in Fig. 2.
Similarly, as shown in Figure 3, the oil cylinder of oil cylinder group 4 row 10 first oil cylinder 26 also has the Offset identical with above-mentioned distance with respect to the oil cylinder row's 12 of oil cylinder group 4 second oil cylinder 28.Thereby, between first oil cylinder row, 10 and second oil cylinder row 12 of internal-combustion engine 2 Offset of distance for " a " being arranged also, biased direction is pointed to the end along crankshaft center line " A " of the bent axle of internal-combustion engine 2.
In the internal-combustion engine 2 of first and second cylinder bodies 10 with above-mentioned bias mode and 12,, be provided with regularly driving mechanism 34, the i.e. power-driven mechanism of valve at an end place along the bent axle of crankshaft center line " A ".Regularly driving mechanism 34 is by end cap 36 sealings.End cap 36 is positioned by first and second fitting surfaces 38 and 40 that are positioned at these end cap both sides, and it is provided with the axis " A " of direction perpendicular to the bent axle of internal-combustion engine 2.Fitting surface 38 and 40 is respectively equipped with first and second boss 42 and 44.And boss 42 and 44 is respectively equipped with first and second mounting holes 46 and 48.
The both sides of oil cylinder group 4 are respectively equipped with first and second fitting surfaces 50 and 52, and it is provided with the axis " A " of direction perpendicular to internal-combustion engine 2.On fitting surface 50 and 52, be provided with the first and second mounting hole (not shown)s of the side of oil cylinder group.Also be respectively equipped with first and second fitting surfaces 54 and 56 of side on the oil cylinder cover 6 and 8, fitting surface 54 and 56 edges are separately positioned on the side of oil cylinder cover 6 and 8 perpendicular to the direction of the axis " A " of internal-combustion engine 2.On fitting surface 54 and 56, be respectively equipped with the first and second mounting hole (not shown)s of the side of oil cylinder cover.
First and second fitting surfaces 38 of the side of end cap with 40 respectively with first and second fitting surfaces 50 of the side of oil cylinder group with 52 and first and second fitting surfaces 54 of the side of oil cylinder cover closely be connected mutually with 56.In addition, first and second construction bolts 58 and 60 penetrate respectively in first and second mounting holes 46 and 48 of end cap side, also penetrate respectively in the first and second mounting hole (not shown)s of oil cylinder 6 and 8 sides, thereby end cap to be threaded on the oil cylinder group 4.In a word, end cap 36 has sealed regularly driving mechanism 34, and this end cap 36 is installed on oil cylinder group 4 and first and second oil cylinder covers 6 and 8, and the mounting point is at the end along crankshaft center line " A " of bent axle, thereby has formed chamber 62.
In this structure, end cap 36 has the fitting surface 38 and 40 of side, and fitting surface 38 and 40 is respectively towards the side that the chamber is arranged between first and second oil cylinders row 10 and 12.Fitting surface 38 closely is connected with the first and second fitting surface (not shown)s of oil cylinder cover 6 and 8 side respectively mutually with 40.Under this state, first and second fitting surfaces 38 of end cap side and 40 are installed on above-mentioned first and second fitting surfaces that do not illustrate by first and second construction bolts 58 and 60.
In order to prevent the oil seepage in the chamber 62, can the sealing gasket (not shown) be set: between first fitting surface 38 of end cap side and first fitting surface 50 of oil cylinder group side, between first fitting surface 54 of first fitting surface 38 of end cap side and oil cylinder cover side in following position; Between second fitting surface 40 of end cap side and second fitting surface 52 of oil cylinder group side, between second fitting surface 56 of second fitting surface 40 of end cap side and oil cylinder cover side.
Owing to second oil cylinder row 12 offset or dish is arranged on the direction of first oil cylinder of internal-combustion engine 2 row's 10 axis along its bent axle " A ", second oil cylinder row 12 also has an offset or dish " a " along another direction and first oil cylinder row 10 of axis " A ".
Therefore, the bolt hole 32 of second oil cylinder cover to the distance of second fitting surface 56 of oil cylinder cover side is greater than first fitting surface 54 of the bolt hole 30 of first oil cylinder cover to the oil cylinder cover side.Second fitting surface 56 of above-mentioned oil cylinder cover side leans with second fitting surface 40 of end cap side.First fitting surface 54 of above-mentioned oil cylinder cover side leans with first fitting surface 38 of end cap side.
As depicted in figs. 1 and 2, end cap 36 has a protuberance 64 on second fitting surface 40 of its side.Protuberance 64 extends to the outside of internal-combustion engine 2.
Protuberance 64 is positioned on second fitting surface 40 of end cap side, and the extension degree of this protuberance 64 will exceed a scope, and this scope is exactly the oil cylinder group second fitting surface 20 contacted zones of oil cylinder cover second fitting surface 16 and second oil cylinder cover 8 of oil cylinder group 4.The oil cylinder group 4 and second oil cylinder cover 8 have been formed second oil cylinder row 12.
In addition, protuberance 64 is arranged on second fitting surface 40 of end cap side, also links to each other with the boss 44 of second mounting hole of end cap side simultaneously.On second fitting surface 40 of end cap side, be provided with two boss 44.Second fitting surface 40 of end cap side extends to and surpasses a scope, and this scope is exactly the oil cylinder group second fitting surface 20 contacted zones of oil cylinder cover second fitting surface 16 and second oil cylinder cover 8 of oil cylinder group 4.The oil cylinder group 4 and second oil cylinder cover 8 have been formed second oil cylinder row 12.
Say that further protuberance 64 is arranged on second fitting surface 40 of end cap side, extend to the outermost end 66 of the second mounting hole boss 44 of end cap side from this fitting surface 40 laterally.On second fitting surface 40 of end cap side, be provided with two boss 44.Second fitting surface 40 of end cap side extends to and surpasses a scope, and this scope is exactly the oil cylinder group second fitting surface 20 contacted zones of oil cylinder cover second fitting surface 16 and second oil cylinder cover 8 of oil cylinder group 4.The oil cylinder group 4 and second oil cylinder cover 8 have been formed second oil cylinder row 12.
As mentioned above, end cap 36 has the protuberance 64 that extends laterally, and this protuberance 64 is arranged on second fitting surface 40 of end cap side, and the end along crankshaft center line " A " direction of position at the bent axle of internal-combustion engine 2 is set.Between first oil cylinder row, 10 and second oil cylinder row 12 of internal-combustion engine 2 offset or dish is arranged, biased direction is pointed to the end along crankshaft center line " A ".Second fitting surface 40 of end cap side and oil cylinder group 4 and second oil cylinder cover 8 mutually against, the oil cylinder group 4 wherein and second oil cylinder cover 8 are formed in second oil cylinder row 12.Second oil cylinder row, 12 and first oil cylinder row 10 also has an offset or dish, and the direction of its biasing is pointed to the other end of crankshaft center line " A ".
Protuberance 64 is arranged on second fitting surface 40 of end cap side, and this protuberance extends to and exceeds a scope, and this scope is exactly second fitting surface 16 of oil cylinder cover and second fitting surface, the 20 contacted zones of oil cylinder group.In addition, protuberance 64 is arranged on second fitting surface 40 of end cap side, also links to each other with the boss 44 of second mounting hole of end cap side simultaneously.On second fitting surface 40 of case lid side, be provided with two boss 44.Second fitting surface 40 of end cap side extends to and surpasses a scope, and this scope is exactly second fitting surface 16 of oil cylinder cover and second fitting surface, the 20 contacted zones of oil cylinder group.Furtherly, protuberance 64 is arranged on second fitting surface 40 of end cap side, and this protuberance 64 extends to the outermost end 66 of boss 44 of the mounting hole of end cap side laterally.On second fitting surface 40 of end cap side, be provided with two boss 44.Second fitting surface 40 of end cap side extends to and surpasses a scope, and this scope is exactly second fitting surface 16 of oil cylinder cover and second fitting surface, the 20 contacted zones of oil cylinder group.
The protuberance 64 of end cap 36 might increase the rigidity of second fitting surface 40 of end cap side.Fitting surface 40 extends to and surpasses a scope, and this scope is exactly the oil cylinder group second fitting surface 20 contacted zones of oil cylinder cover second fitting surface 16 and second oil cylinder cover 8 of oil cylinder group 4.The oil cylinder group 4 and second oil cylinder cover 8 have been formed second oil cylinder row 12.
Thereby end cap 36 has following advantage, even internal-combustion engine 2 end cap 36 in operation process vibrates to some extent, protuberance 64 also can reduce this vibration, otherwise should vibration can all be sent on second fitting surface 40 of end cap side, and the sealing of this fitting surface is descended.Reduced above-mentioned vibration, just can improve the sealability of second fitting surface 40 of end cap side, thereby prevented that effectively lubricant oil from leaking out from chamber 62.
In addition, end cap 36 also has an advantage, on second fitting surface 40 of end cap side, only increased the sealability that protuberance 64 has just improved lubricant oil exactly, this can just can realize easily by fitting surface 40 is done local variation, can not strengthen cost, can not gain in weight, seldom change process equipment and/or need not change installation work-hour.
As mentioned above, have the protuberance that extends laterally according to the end cap of the cover structure of the transmission case of internal-combustion engine of the present invention, this protuberance is arranged on second fitting surface of end cap side, and it is provided with the end along its axial direction of position at I. C. engine crankshaft.Between first oil cylinder row of internal-combustion engine and second oil cylinder row offset or dish is arranged, biased direction is pointed to the end of the bent axle of this internal-combustion engine along its axial direction.Second fitting surface of end cap side and oil cylinder group and second oil cylinder row's second oil cylinder cover mutually against.Second oil cylinder row and first oil cylinder row also have individual offset or dish, and biased direction is pointed to the other end along the crankshaft center line direction.Thereby described protuberance has increased the rigidity of second fitting surface of end cap side, and this second fitting surface extends to and surpasses a scope, and this scope is exactly the contacted zone of oil cylinder group second fitting surface of oil cylinder cover second fitting surface and second oil cylinder cover of oil cylinder group.The oil cylinder group and second oil cylinder cover have been formed second oil cylinder row.
Consequently, end cap 36 has following advantage, even the internal-combustion engine exactly in the running makes under the situation that this end cap vibrates to some extent, described protuberance also can reduce this vibration, otherwise should vibration can all be passed on second fitting surface of end cap side, the sealability of this fitting surface is descended.Reduce this vibration, just improved the sealability of second fitting surface of end cap side.Thereby can prevent effectively that lubricant oil from leaking out from chamber 62.
In addition, this end cap also has an advantage, be exactly only to have increased the sealability that protuberance has just improved second fitting surface of end cap side, by second fitting surface is done local variation in shape, this is easy to realize, can not strengthen cost significantly and gain in weight, need not change process equipment and/or installation work-hour yet.
Although above a certain embodiments of the present invention is explained, but this should be noted that and can carry out various variations or modification to the present invention just for the convenience on illustrating, also comprise part is carried out layout again, but this all within the scope of the present invention.

Claims (4)

1, a kind of cover structure of transmission case of internal-combustion engine, first and second oil cylinder covers of this internal-combustion engine are separately positioned on the V-shaped in essence oil cylinder group, thereby formed first and second oil cylinders row that V-arrangement is arranged, between wherein said first oil cylinder row and second oil cylinder row offset or dish is arranged, its biased direction is pointed to the end along the crankshaft center line direction of I. C. engine crankshaft, it is characterized in that this cover structure comprises:
The power transmission mechanism that valve drives is arranged on the end along its axial direction of described bent axle;
End cap is used to seal described power transmission mechanism, is installed on described first and second oil cylinder covers and the described oil cylinder group, and the mounting point is at the end along the crankshaft center line direction, and this end cap has first and second fitting surfaces of side;
First fitting surface of described end cap side and described oil cylinder group lean, also lean with described first oil cylinder cover, the described oil cylinder group and first oil cylinder cover have been formed first oil cylinder row, simultaneously, second fitting surface of described end cap side and described oil cylinder group lean, also lean with described second oil cylinder cover, the described oil cylinder group and second oil cylinder cover have been formed second oil cylinder row; Second fitting surface of described end cap side is provided with the protuberance that extends laterally.
2, the cover structure of the transmission case of internal-combustion engine as claimed in claim 1, it is characterized in that, second fitting surface of described end cap side extends to and surpasses a scope, this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder cover second fitting surface of described oil cylinder group and described second oil cylinder cover leans, and described oil cylinder group and described second oil cylinder cover have been formed described second oil cylinder row.
3, the cover structure of the transmission case of internal-combustion engine as claimed in claim 1, it is characterized in that, described protuberance is arranged on second fitting surface of described end cap side, this protuberance is provided with the boss of second mounting hole of end cap side, on second fitting surface of described end cap side, be provided with the such boss in two places, second fitting surface of described end cap side extends to and surpasses a scope, this scope is exactly the zone that oil cylinder group second fitting surface of oil cylinder cover second fitting surface of described oil cylinder group and described second oil cylinder cover leans, and described oil cylinder group and described second oil cylinder cover have been formed described second oil cylinder row.
4, the cover structure of the transmission case of internal-combustion engine as claimed in claim 1, it is characterized in that, described boss is arranged on second fitting surface of described end cap side, this protuberance extends to the boss outermost end of second mounting hole of end cap side laterally, on second fitting surface of described end cap side, be provided with the such boss in two places, second fitting surface of described end cap side extends to and exceeds a scope, this scope is exactly the contacted zone of oil cylinder group second fitting surface of oil cylinder cover second fitting surface and described second oil cylinder cover of described oil cylinder group, and described oil cylinder group and described second oil cylinder cover have been formed described second oil cylinder row.
CN97115130A 1996-07-31 1997-07-23 Transmission case cover structure for internal combustion engine Expired - Fee Related CN1069392C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP21796296A JPH1047158A (en) 1996-07-31 1996-07-31 Chain cover structure of internal combustion engine
JP217962/96 1996-07-31
JP217962/1996 1996-07-31

Publications (2)

Publication Number Publication Date
CN1172920A true CN1172920A (en) 1998-02-11
CN1069392C CN1069392C (en) 2001-08-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN97115130A Expired - Fee Related CN1069392C (en) 1996-07-31 1997-07-23 Transmission case cover structure for internal combustion engine

Country Status (4)

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JP (1) JPH1047158A (en)
CN (1) CN1069392C (en)
AU (1) AU696127B2 (en)
DE (1) DE19732422C2 (en)

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DE10047233A1 (en) 2000-09-23 2002-04-11 Zahnradfabrik Friedrichshafen machine housing
CN103114928A (en) * 2012-12-11 2013-05-22 重庆百吉四兴压铸有限公司 Diesel engine tank cover
JP6156412B2 (en) * 2015-03-02 2017-07-05 トヨタ自動車株式会社 Internal combustion engine
CN106969237A (en) * 2017-03-24 2017-07-21 中国北方发动机研究所(天津) A kind of new construction bell housing

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JPH02241928A (en) * 1989-03-15 1990-09-26 Nissan Motor Co Ltd Chain cover device for v-shaped engine
JP2841754B2 (en) * 1990-06-30 1998-12-24 スズキ株式会社 Seal structure of cam chain cover in engine
DE4026384C1 (en) * 1990-08-21 1991-07-25 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
JPH04119347A (en) * 1990-09-10 1992-04-20 Fuji Photo Film Co Ltd Photographic film
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CN2175347Y (en) * 1993-09-21 1994-08-24 常州钣焊厂 Frame serving as bed of medium or small diesel engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734055A (en) * 2012-06-25 2012-10-17 三一重工股份有限公司 Oil cylinder driven power set

Also Published As

Publication number Publication date
CN1069392C (en) 2001-08-08
AU2486697A (en) 1998-02-05
AU696127B2 (en) 1998-09-03
JPH1047158A (en) 1998-02-17
DE19732422C2 (en) 2000-03-09
DE19732422A1 (en) 1998-02-05

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