CN102128065B - Lubricating oil supply device for internal combustion engine - Google Patents
Lubricating oil supply device for internal combustion engine Download PDFInfo
- Publication number
- CN102128065B CN102128065B CN2010106197602A CN201010619760A CN102128065B CN 102128065 B CN102128065 B CN 102128065B CN 2010106197602 A CN2010106197602 A CN 2010106197602A CN 201010619760 A CN201010619760 A CN 201010619760A CN 102128065 B CN102128065 B CN 102128065B
- Authority
- CN
- China
- Prior art keywords
- oil
- crankcase
- internal
- combustion engine
- oil circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0253—Pressure lubrication using lubricating pumps characterised by the pump driving means
- F01M2001/0276—Pressure lubrication using lubricating pumps characterised by the pump driving means driven by a balancer shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
- F01M2011/026—Arrangements of lubricant conduits for lubricating crankshaft bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
- F01M2011/027—Arrangements of lubricant conduits for lubricating connecting rod bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a lubricating oil supply device for an internal combustion engine, wherein one end of a balancer shaft of the lubricating oil supply device for an internal combustion engine is provided with a lubricating oil pump, while no oil conduit is required to be provided within the balancer shaft. The lubricating oil pump (25) is connected with one end of the balancer shaft (13). The lubricating oil pump (25) comprises an inner rotor (56) and an outer rotor (58). The inner rotor (56) is provided with a plurality of teeth, and the number of the teeth of the outer rotor (58) is greater than the number of the teeth of the inner rotor (56). One end of the balancer shaft (13) capable of rotating freely is supported by a bearing (18). Sealing plates (65) are arranged among the bearing (18), the inner rotor (56) and the outer rotor (58). An intake oil conduit (48) for directing lubricating oil into the lubricating oil pump (25) is disposed inside the wall thickness of a crankcase (11). A discharge oil conduit (49) for directing lubricating oil pressurized in the lubricating oil pump (25) to the in-shaft oil conduit (53) is disposed within the wall thickness of the crankcase.
Description
Technical field
The present invention relates to be applicable to the oil feeding device of general purpose engine.
Background technique
In internal-combustion engine, with utilizing the lubricant oil after the lubricating pump pressurization to supply to the swivel bearing portion of rotary component, thereby realize smooth and easyization that rotatablely move.
In the internal-combustion engine that lubricating pump is disposed in the oil sump, has oil sump in the bottom of crankcase.Lubricating pump is provided with the mode that is dipped in the oil sump.Driving gear is integrally formed at bent axle.Driven gear is driven by driving gear.Lubricating pump is driven by driven gear.
In order to make the motor miniaturization and to reduce part count, driving gear and driven gear are saved in expectation.
Therefore, for example Japan is real opens disclosed that kind in the flat 5-14505 communique, and known have a general purpose engine that has saved driving gear and driven gear.
Fig. 6 show Japan real open disclosed in the flat 5-14505 communique, be located at the oil pump in the crankcase.
With reference to Fig. 6, an end of trunnion shaft 104 is supported on the sidewall 102 of crankcase 101 through bearing 103.Pump shaft 105 mechanically is connected with an end of trunnion shaft 104, and the internal rotor 107 of lubricating pump 106 is incorporated into pump shaft 105, and the external rotor 108 of lubricating pump 106 is embedded in internal rotor 107.
At trunnion shaft 104, be provided with long oil circuit 109 since an end along shaft centre line.Lubricant oil is inhaled into lubricating pump 106 through suction port 111, and discharges from lubricating pump 106.The lubricant oil that is discharged from is sent to the lubricated object portion of motor through oil circuit 109 from exhaust port 112.
Because lubricating pump 106 is connected with an end of trunnion shaft 104, therefore need not aforesaid driving gear and driven gear.
Yet, long oil circuit 109 need be set in trunnion shaft 104.Trunnion shaft 104 is parts of the uneven shape that can the unbalanced factor of bent axle be offset, and is meticulous parts.Long oil circuit 109 is set in trunnion shaft 104 like this, and not only processing charges is high, and the shaped design of trunnion shaft 104 become the difficulty, make design cost high.
Thereby, expect that an a kind of end at trunnion shaft has lubricating pump and need not to be provided with at trunnion shaft the oil feeding device of the internal-combustion engine of oil circuit.
Summary of the invention
Problem of the present invention is to provide a kind of oil feeding device of internal-combustion engine, and the oil feeding device of this internal-combustion engine has lubricating pump at an end of trunnion shaft, and need not at trunnion shaft oil circuit to be set.
According to an aspect of the present invention; A kind of oil feeding device of internal-combustion engine is provided, in this internal-combustion engine, has taken in bent axle and trunnion shaft at crankcase; Oil circuit in said bent axle is provided with axle; Oil circuit is directed to crankshaft bearing with lubricant oil in this axle, comes to said crankshaft bearing supplying lubricating oil, wherein through oil circuit supplying lubricating oil in said axle; Lubricating pump is configured with the form that is connected with an end of said trunnion shaft; Said lubricating pump will lodge in the lubricant oil suction of said crankcase and this lubricant oil will be pressurizeed, and suck oil circuit and be located in the wall thickness of said crankcase, and the lubricant oil that this suction oil circuit will lodge in said crankcase is directed to said lubricating pump; Discharge oil circuit and be located in the wall thickness of said crankcase, this discharge oil circuit will utilize the lubricant oil after said lubricating pump pressurizes to be directed to oil circuit in the said axle.
Therefore, can access the oil feeding device that a end at trunnion shaft has lubricating pump and need not to be provided with at trunnion shaft the internal-combustion engine of oil circuit.
Said lubricating pump has internal rotor and external rotor; Said internal rotor has a plurality of teeth; The number of teeth of the said internal rotor of gear ratio of said external rotor is many; One end of said trunnion shaft is supported on bearing with rotation mode freely, between this bearing and said internal rotor and said external rotor, is provided with sealing plate.Therefore, utilize the lubricant oil after internal rotor and external rotor compress not drain to the trunnion shaft side with can not surpassing tolerance.
Preferably, said lubricating pump is located in the wall thickness of said crankcase.Therefore, realized the miniaturization of oil feeding device.
Description of drawings
Below, based on accompanying drawing preferred embodiment of the present invention is at length described, among the figure:
Fig. 1 is the sectional view of the internal-combustion engine that relates to of present embodiment.
Fig. 2 is the sectional view along the 2-2 line among Fig. 1.
Fig. 3 is the sectional view along the 3-3 line among Fig. 1.
Fig. 4 is the Action Specification figure of lubricating pump.
Fig. 5 is the sectional view of crankcase.
Fig. 6 is the synoptic diagram of existing lubricant supplier.
Embodiment
With reference to Fig. 1, in the crankcase 11 of internal-combustion engine 10, be provided with bent axle 12 and trunnion shaft 13 with the mode that is parallel to each other.
The two ends of bent axle 12 are by ball bearing 15 and sliding bearing 16 supportings, and said ball bearing 15 is located at the case lid 14 that makes crankcase 11 sealings, and said sliding bearing 16 is located at crankcase 11.Ball bearing can be a rolling bearing, also can be roller bearing.
Trunnion shaft 13 is the rotary components that form the uneven shape shown in dummy line with the mode of the unbalanced factor that can offset bent axle 12.The two ends of trunnion shaft 13 are by ball bearing 17 and ball bearing 18 supportings, and said ball bearing 17 is located at case lid 14, and said ball bearing 18 is located at crankcase 11.Case lid 14 can unload from crankcase 11 through quick-release bolt 19.
On the bent axle 12 and near ball bearing 15, be formed with the first big driving gear 21 and the second little driving gear 22 of diameter of diameter.First driven gear 23 is integrally formed at trunnion shaft 13, the first driven gears 23 and is driven by first driving gear 21.
And, mechanically be connected with lubricating pump 25 at an end of trunnion shaft 13 (from case lid 14 end far away).Pump shaft 26 is disposed on the axis of trunnion shaft 13.The structure of lubricating pump 25 with act on back narration, lubricating pump 25 is to annular slot 27 and crankshaft bearing 29 supplying lubricating oil by the strong hand, wherein, said annular slot 27 is located at sliding bearing 16, said crankshaft bearing 29 is connected with the big end of connecting rod 28.
Bent axle 12 is sealed by oil sealing 31 with crankcase 11, and bent axle 12 is sealed by oil sealing 32 with case lid 14, therefore needn't worry that lubricant oil leaks outside.
End at bent axle 12 is equipped with flywheel 33, can realize the smooth and easy rotation of bent axle 12 with trunnion shaft 13 through flywheel 33.
Next, the overall structure to internal-combustion engine describes.
As shown in Figure 2, internal-combustion engine 10 possesses: crankcase 11; Cylinder portion 34, this cylinder portion 34 extends to oblique upper from this crankcase 11; Cylinder liner 35, this cylinder liner 35 is embedded in this cylinder portion 34; Piston 36, this piston 36 is incorporated in this cylinder liner 35 with the mode that moves freely; Connecting rod 28, this connecting rod 28 extends from this piston 36; Cylinder head 37, this cylinder head 37 is stopped up the opening of cylinder portion 34; Bent axle 12, this bent axle 12 is incorporated in crankcase 11; Camshaft 38, this camshaft 38 is incorporated in crankcase 11, and this camshaft 38 is positioned at than this bent axle 12 by down and near the position of cylinder portion 34; Trunnion shaft 13, this trunnion shaft 13 is incorporated in crankcase 11, and this trunnion shaft 13 is positioned at than bent axle 12 by down and near the position of cylinder portion 34 opposition sides; Lubricating pump 25, this lubricating pump 25 is disposed at the depths of trunnion shaft 13; And the gear train and the valve actuating gear 40 of next narration.
Be provided with first driving gear 21 at bent axle 12 and mesh with the first big driving gear 21 of diameter than these first driving gear, 21 little second driving gear, 22, the first driven gears 23, through these first driven gear, 23 driven equilibrium axles 13 and lubricating pumps 25 with diameter.
In addition, second driving gear, 22 engagements that second driven gear 41 that diameter is big is little with diameter come drive cam shaft 38 through this second driven gear 41.This camshaft 38 becomes the driving source of valve actuating gear 40.
That is, valve actuating gear 40 comprises: camshaft 38; Push rod 43, this push rod 43 is by cam 42 jack-up of this camshaft 38; Rocker arm 45, this Rocker arm 45 is supported on cylinder head 37 with freely mode of swing, thus this Rocker arm 45 is swung through push rod 43 and is opened valve 44; And valve spring 46, this valve spring 46 is used to make valve 44 to close.Through valve actuating gear 40, valve 44 is opened and closed.
Next, based on the visual angle has been changed Fig. 3 of 180 ° with respect to Fig. 2, to being that the oil feeding device of major component describes with lubricating pump 25.
As shown in Figure 3, oil feeding device 47 comprises the suction oil circuit 48 of lubricating pump 25, this lubricating pump 25 and discharges oil circuit 49.In detail, sucking oil circuit 48 links to each other with the oil suction portion 51 of lubricating pump 25.The oil discharge portion 52 of discharge oil circuit 49 selflubricating oil pumps 25 extends and links to each other with the annular slot 27 of sliding bearing 16 (Fig. 1).And annular slot 27 utilizes the interior oil circuit 53 of axle to link to each other with crankshaft bearing 29 (Fig. 1).
Next, structure and the effect to lubricating pump 25 describes.
Shown in Fig. 4 (a), lubricating pump 25 is preferably trochoid pump (trochoid pump), and this trochoid pump comprises: pump shaft 26; Internal rotor 56, this internal rotor 56 have a plurality of (being 4 in this example) tooth 55, and this internal rotor 56 utilizes this pump shaft 26 in figure, counterclockwise to rotate; External rotor 58, this external rotor 58 have quantity a plurality of (being 5 in this example) internal tooth 57 than this internal rotor more than 56, and this external rotor 58 utilizes internal rotor 56 and rotates; And pump case portion 59, this pump case portion 59 adopts and makes these external rotor 58 free rotation mode take in this external rotor 58.Pump case portion 59 is parts of crankcase.
Because internal rotor 56 is different with the number of teeth of external rotor 58, thereby can form the pump space 61 shown in the oblique line among Fig. 4 (a).In Fig. 4 (b), this pump space 61 increases.Produce pumping action through this volume increase, thereby lubricant oil is imported pump spaces 61 via oil suction portion 51.In Fig. 4 (c), move to oil discharge portion 52 from oil suction portion 51 in pump space 61, and in Fig. 4 (d), lubricant oil is discharged from pump space 61 to oil discharge portion 52.
That is, the volume-variation in pump space 61, lubricant oil is inhaled in the process that volume increases, and lubricant oil is discharged from the process that volume reduces.
Utilize Fig. 5 to being that the preferable layout of the oil feeding device 47 of major component describes with such lubricating pump 25.
As shown in Figure 5, lubricating pump 25 is accommodated in the wall thickness of crankcase 11.And; Sucking oil circuit 48 is located in the wall thickness of crankcase 11; The lubricant oil that this suction oil circuit 48 will lodge in crankcase 11 imports to lubricating pump 25; And, to discharge oil circuit 49 and be located in the wall thickness of crankcase 11, this discharge oil circuit 49 will utilize the lubricant oil after lubricating pump 25 pressurizations to import to an interior oil circuit 53 (Fig. 3).
In addition, wall thickness tilt or the setting of quadrature ground at crankcase 11 all is out of question with discharge oil circuit 49 to suck oil circuit 48.For example, sucking oil circuit 48 can be by constituting with the bottom: beeline channel 62, this beeline channel 62 utilize drill bit (キ リ) to offer from the bottom surface of crankcase 11, and this beeline channel 62 extends to till the oily suction portion 51; Through hole 63, this through hole 63 is from the oil sump that leads to crankcase 11 midway of this beeline channel 62; And steel ball (perhaps stopper) 64, this steel ball 64 is used to stop up the redundance of beeline channel 62.Through forming this structure, can in the wall thickness of crankcase 11, easily form and suck oil circuit 48 and discharge oil circuit 49.
Can be clear and definite by Fig. 5: the end at trunnion shaft 13 has lubricating pump 25, and need not at trunnion shaft 13 oil circuit to be set.Compare with the existing technology that oil circuit is set at trunnion shaft, in the present invention, the processing of trunnion shaft 13 becomes simply, and it is easy that the design of trunnion shaft 13 becomes.
In addition and since by the lubricant oil after 58 compressions of internal rotor 56 and external rotor by be located at internal rotor 56 and external rotor 58, with ball bearing 18 between sealing plate 65 sealings, so needn't worry that lubricant oil drains to ball bearing 18 sides with surpassing tolerance.
In addition, lubricating pump 25 is preferably trochoid pump, yet also can be gear pump, vane pump, and form is arbitrarily.
Oil feeding device of the present invention can be widely used in internal-combustion engine, and is preferably applied to the strict small-sized universal engine of pursuing light weight, miniaturization.
Claims (2)
1. the oil feeding device of an internal-combustion engine; In this internal-combustion engine, in crankcase (11), taken in bent axle (12) and trunnion shaft (13), in said bent axle, be provided with oil circuit (53) in the axle; Oil circuit (53) is directed to crankshaft bearing (29) with lubricant oil in this axle; Come to said crankshaft bearing (29) supplying lubricating oil through oil circuit (53) supplying lubricating oil in said axle, the oil feeding device of this internal-combustion engine is characterised in that
Lubricating pump (25) is configured with the form that the end with said trunnion shaft (13) is connected; This lubricating pump (25) will lodge in lubricant oil in the said crankcase (11) and suck and this lubricant oil is pressurizeed; Said lubricating pump (25) has internal rotor (56) and external rotor (58); Said internal rotor (56) has a plurality of teeth, and the number of teeth of the said internal rotor of gear ratio (56) of said external rotor (58) is many, and an end of said trunnion shaft (13) is supported on bearing (18) with rotation mode freely; Between this bearing (18) and said internal rotor (56) and said external rotor (58), be provided with sealing plate (65)
Suck oil circuit (48) and be located in the wall thickness of said crankcase (11), the lubricant oil that this suction oil circuit (48) will lodge in the said crankcase (11) is directed to said lubricating pump (25),
Discharge oil circuit (49) and be located in the wall thickness of said crankcase (11), this discharge oil circuit (49) will utilize the lubricant oil after said lubricating pump (25) pressurizes to be directed to oil circuit (53) in the said axle.
2. the oil feeding device of internal-combustion engine according to claim 1 is characterized in that,
Said lubricating pump (25) is located in the wall thickness of said crankcase (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-003990 | 2010-01-12 | ||
| JP2010003990A JP2011144701A (en) | 2010-01-12 | 2010-01-12 | Lubricating oil supply device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102128065A CN102128065A (en) | 2011-07-20 |
| CN102128065B true CN102128065B (en) | 2012-10-24 |
Family
ID=44257523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106197602A Expired - Fee Related CN102128065B (en) | 2010-01-12 | 2010-12-31 | Lubricating oil supply device for internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110168125A1 (en) |
| JP (1) | JP2011144701A (en) |
| CN (1) | CN102128065B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671467A (en) * | 2013-12-12 | 2014-03-26 | 绵阳新晨动力机械有限公司 | Oil pump inner rotor transmission shaft applied to engine |
| US10047824B2 (en) * | 2014-07-29 | 2018-08-14 | Deere & Company | Method for pre-balancing and machining a crankshaft based on a mass distribution method |
| JP6286746B2 (en) * | 2014-09-29 | 2018-03-07 | 本田技研工業株式会社 | Engine oil supply structure |
| CN107476842B (en) * | 2016-08-29 | 2019-12-20 | 北汽福田汽车股份有限公司 | Oil pump drive structure, automobile engine and vehicle |
| DE102017117516A1 (en) * | 2017-08-02 | 2019-02-07 | Man Truck & Bus Ag | Device for lubricating an internal combustion engine |
| JP7075783B2 (en) * | 2018-03-07 | 2022-05-26 | 日立Astemo株式会社 | Balancer device for internal combustion engine |
| CN111485970A (en) * | 2019-01-28 | 2020-08-04 | 长城汽车股份有限公司 | Engine balance shaft assembly and engine |
| DE102019003288A1 (en) | 2019-05-09 | 2020-11-12 | Deutz Aktiengesellschaft | Internal combustion engine with mass balancing gear with two balance shafts |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664228A (en) * | 1985-02-14 | 1987-05-12 | Kubota Ltd. | Lubrication system for a vertical shaft engine |
| CN2637739Y (en) * | 2003-07-16 | 2004-09-01 | 重庆宗申技术开发研究有限公司 | Motorcycle engine lubricating device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4199305A (en) * | 1977-10-13 | 1980-04-22 | Lear Siegler, Inc. | Hydraulic Gerotor motor with balancing grooves and seal pressure relief |
| JPH0245457Y2 (en) * | 1985-12-23 | 1990-12-03 | ||
| US4793301A (en) * | 1986-12-25 | 1988-12-27 | Fuji Jukogyo Kabushiki Kaisha | Lubricating system for an internal combustion engine |
| JPH0352311U (en) * | 1989-09-27 | 1991-05-21 | ||
| JP2500975Y2 (en) * | 1990-01-31 | 1996-06-12 | スズキ株式会社 | Lubricating oil relief device for vertical engine |
| JP3212306B2 (en) * | 1990-09-12 | 2001-09-25 | ヤンマーディーゼル株式会社 | Cylinder block for internal combustion engine |
| JPH0514505A (en) * | 1991-06-28 | 1993-01-22 | Nippon Telegr & Teleph Corp <Ntt> | Adaptor for incoming call service in busy state |
| JP4573823B2 (en) * | 2006-10-27 | 2010-11-04 | 本田技研工業株式会社 | Engine lubrication equipment |
-
2010
- 2010-01-12 JP JP2010003990A patent/JP2011144701A/en active Pending
- 2010-12-20 US US12/973,742 patent/US20110168125A1/en not_active Abandoned
- 2010-12-31 CN CN2010106197602A patent/CN102128065B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664228A (en) * | 1985-02-14 | 1987-05-12 | Kubota Ltd. | Lubrication system for a vertical shaft engine |
| CN2637739Y (en) * | 2003-07-16 | 2004-09-01 | 重庆宗申技术开发研究有限公司 | Motorcycle engine lubricating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011144701A (en) | 2011-07-28 |
| CN102128065A (en) | 2011-07-20 |
| US20110168125A1 (en) | 2011-07-14 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20131231 |