CN101915137A - Integrated structure of engine front housing and oil pump assembly - Google Patents
Integrated structure of engine front housing and oil pump assembly Download PDFInfo
- Publication number
- CN101915137A CN101915137A CN 201010202764 CN201010202764A CN101915137A CN 101915137 A CN101915137 A CN 101915137A CN 201010202764 CN201010202764 CN 201010202764 CN 201010202764 A CN201010202764 A CN 201010202764A CN 101915137 A CN101915137 A CN 101915137A
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- Prior art keywords
- engine
- oil pump
- oil
- pump assembly
- front housing
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention provides an integrated structure of an engine front housing and an oil pump assembly. The structure comprises the engine front housing and the oil pump assembly, wherein a space for installing the oil pump assembly is formed at a position, which is opposite to the front end of an engine crankshaft, on the inner side of the engine front housing; a front housing wall is taken as a shell of the oil pump assembly; the oil pump assembly is arranged in the engine front housing at the front end of the crankshaft; a pump chamber is formed in the internal unit of the front housing; an inner rotor of an oil pump is directly arranged on a front end shaft neck of the engine crankshaft in an interference mode, arranged in the pump chamber together with an outer rotor and compressed tightly through a pump cover; an oil inlet passage and an oil outlet passage communicated with the pump chamber are formed in the internal unit of the front housing; a bypass machine of the oil outlet passage is provided with a bypass oil hole; and a pressure limiting valve, a pressure limiting valve spring and a screw plug are arranged in the oil hole. The structure has the advantages of simplifying a driving system of the oil pump, saving arrangement space and improving the noise, vibration and harshness (NVH) performance of an engine.
Description
Technical field
The present invention relates to a kind of engine lubrication system, be specifically related to a kind of engine oil pump drive system of integrated front end-cover.
Background technique
The motor that the aluminum alloy front end-cover is arranged usually, its engine oil pump assembly comprise housing, pump cover, internal rotor, external rotor, inner rotor shaft, oil pump sprocket wheel, pressure-limit valve, limiting valve spring and pressure-limit valve plug screw etc.Design has oil duct on housing, internal rotor, external rotor are assemblied on the housing, inner rotor shaft and internal rotor interference fit, the oil pump sprocket wheel is fitted on the inner rotor shaft, pump cover adopts bolt to be connected with housing, and pressure-limit valve, limiting valve spring and pressure-limit valve plug screw dress are accompanied on housing.
And the drive system arrangements of oil pump is as shown in Figure 1: sprocket wheel 2 is assemblied on the bent axle 1, and chain 4 connects together sprocket wheel 2 and oil pump sprocket wheel, by mechanical tensioner 3 with 4 tensionings of oil pump chain.Bent axle 1 rotates, and drives sprocket wheel 2 and rotates, and is delivered on the engine oil pump assembly 5 by chain 4 and oil pump sprocket wheel, makes engine oil pump assembly pump oil.Front end-cover 6 and bent axle 1 cooperate, and several of oil pan 7 usefulness are bolted on the front end-cover 6.
Because the part that comprises of said engine oil drive system of pump is many, just causes the complete machine cost very high, and engine oil pump assembly 5 is assemblied in the oil pan 7, occupied the space of oil pan, and oil pan 7 is increased, and the motor whole height is increased, and is unfavorable for engine arrangement.Simultaneously, the motion of chain and sprocket wheel has also increased the extra noise of motor.
Summary of the invention
The objective of the invention is to deficiency, propose a kind of engine front housing and engine oil pump assembly integrated morphology,, save arrangement space, improve the NVH performance of motor to simplify the drive system of oil pump at the prior art existence.
The technical solution used in the present invention is as follows:
A kind of engine front housing and engine oil pump assembly integrated morphology, it comprises engine front housing and engine oil pump assembly, described engine oil pump assembly comprises oil pump internal rotor, external rotor, engine oil pump cover, pressure-limit valve, limiting valve spring and obstruction;
It is characterized in that: the space that is formed with the fitting machine oil pump assy in the inboard position relative of described above-mentioned engine front housing with the engine crankshaft front end, with the housing of front shroud shell wall as engine oil pump assembly, engine oil pump assembly is arranged in the engine front housing of crankshaft front end; Machine is added with pump chamber in front end-cover, and the direct interference of oil pump internal rotor is installed on the preceding end journal of engine crankshaft, and is assemblied in the pump chamber with external rotor, compresses by pump cover; Machine is added with oil input channel and the oil road logical with pump chamber two in front end-cover, and is added with the oilhole of bypass, assembling pressure-limit valve, limiting valve spring and plug screw in the oilhole, the oil pan of the logical motor of oilhole at oil road next door machine.
The present invention is by being integrated in engine oil pump assembly on the engine front housing, rotating direct driving machine oil pump assy by engine crankshaft rotates, compare with the structure before improving, reduce parts such as oil pump sprocket wheel, inner rotor shaft, sprocket wheel, chain and mechanical tensioner, reduced motor complete machine cost.Simultaneously, engine oil pump assembly is arranged in the front end-cover of crankshaft front end, makes the oil pan volume, highly reduces, and has reduced motor complete machine height, and the motor total height is easy to control.In addition,, reduced engine noise, improved motor NVH performance owing to there is not the motion of chain and sprocket wheel.
Description of drawings
Fig. 1 is the traditional engine oil pump assembly and the schematic representation of drive system.
Fig. 2 is the schematic representation of the rigging position of traditional engine oil pump assembly.
Fig. 3 is a structural representation of the present invention.
The structural representation that Fig. 4 sees from another angle for the present invention.
Among the figure, 1, bent axle 2, sprocket wheel 3, mechanical tensioner 4, chain 5, engine oil pump assembly (52, pump cover 53, external rotor 54, internal rotor 55, plug screw 56, limiting valve spring 57, pressure-limit valve 58, oil input channel 59, oil road) 6, front end-cover 7, oil pan 11, crankshaft front end axle journal
Embodiment
As shown in Figure 3 and Figure 4: engine front housing and engine oil pump assembly integrated morphology comprise engine oil pump assembly 5 and front end-cover 6.Engine oil pump assembly 5 comprises oil pump internal rotor 54, external rotor 53, pump cover 52, pressure-limit valve 57, limiting valve spring 56 and plug screw 55 etc.
With the wall of front end-cover 6 housing as engine oil pump assembly 5, design oil input channel 58, oil road 59 and draining hole on front end-cover 6, parallel operation adds pump chamber.Internal rotor 54 direct and crankshaft front end axle journal 11 interference fit, oil pump internal rotor 54, external rotor 53 are assemblied in the pump chamber, compress by pump cover 52, are connected with front end-cover 6 with bolt.The oil input channel 58 on the pump housing and the pump chamber of inside and outside rotor are communicated with, and the sump strainer of oil input channel 58 and motor is connected with bolt.The oil road 59 on the pump housing and the pump chamber of inside and outside rotor also are communicated with, and the main oil gallery of oil road 59 and motor is connected.At oilhole of oil road place bypass, pressure-limit valve 57, limiting valve spring 56, plug screw 55 etc. are assemblied in this oilhole, this oilhole leads to oil pan, after outlet pressure reaches certain value, the resistance promotion pressure-limit valve that machine oil will overcome limiting valve spring moves down, part machine oil is flowed back in the oil pan, thereby make the pressure in the main oil gallery be unlikely to excessive.
Working principle: along with the rotation of bent axle, driving oil pump internal rotor 54 rotates, sense of rotation A, near oil input channel 58, the gap of internal rotor 54,53 formation of external rotor is smaller, and along with the rotation of internal rotor 54, the gap of internal rotor 54,53 formation of external rotor increases gradually, the pump chamber internal pressure is reduced, will constantly machine oil be sucked from oil input channel.When internal rotor 54 forwarded the oil road annex to, the gap of internal rotor 54,53 formation of external rotor reduced gradually, and the pump chamber internal pressure is increased, and machine oil constantly is transported to main oil gallery from oil road.
Claims (1)
1. engine front housing and engine oil pump assembly integrated morphology, it comprises engine front housing and engine oil pump assembly, described engine oil pump assembly comprises internal rotor, external rotor, engine oil pump cover, pressure-limit valve, limiting valve spring and obstruction;
It is characterized in that: be formed with the space of fitting machine oil pump assy in the inboard position relative with the engine crankshaft front end of described above-mentioned engine front housing, with the housing of front shroud shell wall as engine oil pump assembly, engine oil pump assembly is arranged in the front end-cover of crankshaft front end; Machine is added with pump chamber in front end-cover, and the direct interference of oil pump internal rotor is installed on the preceding end journal of engine crankshaft, and is assemblied in the pump chamber with external rotor, compresses by pump cover; Machine is added with oil input channel and the oil road that communicates with pump chamber in front end-cover, and is added with the oilhole of bypass, assembling pressure-limit valve, limiting valve spring and plug screw in the oilhole, the oil pan of the logical motor of oilhole at oil road next door machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010202764 CN101915137A (en) | 2010-06-17 | 2010-06-17 | Integrated structure of engine front housing and oil pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010202764 CN101915137A (en) | 2010-06-17 | 2010-06-17 | Integrated structure of engine front housing and oil pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101915137A true CN101915137A (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010202764 Pending CN101915137A (en) | 2010-06-17 | 2010-06-17 | Integrated structure of engine front housing and oil pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101915137A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363275A (en) * | 2012-03-29 | 2013-10-23 | 比亚迪股份有限公司 | Oil pump, engine front cover and engine |
| CN103899430A (en) * | 2014-04-24 | 2014-07-02 | 台州九谊机电有限公司 | Front cover shell of automobile engine |
| CN108412631A (en) * | 2018-05-17 | 2018-08-17 | 台州市天人合塑料包装有限公司 | A kind of timing chain cover with lubricating oil pump |
| CN108468641A (en) * | 2017-02-03 | 2018-08-31 | 福特全球技术公司 | Wear-resistant coating for oil pump chamber |
| CN108661902A (en) * | 2018-04-28 | 2018-10-16 | 浙江宏鼎汽摩配件股份有限公司 | A kind of automobile engine oil pump assembly and its production technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288100A (en) * | 1999-09-09 | 2001-03-21 | 本田技研工业株式会社 | Lubricating apparatus for engine |
| CN1386963A (en) * | 2001-05-17 | 2002-12-25 | 本田技研工业株式会社 | Oil pump mounting structure |
| JP3837346B2 (en) * | 2002-03-15 | 2006-10-25 | 株式会社クボタ | Different types of engines |
| CN101191444A (en) * | 2006-12-01 | 2008-06-04 | 上海比亚迪有限公司 | Internal combustion engine front cover |
-
2010
- 2010-06-17 CN CN 201010202764 patent/CN101915137A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288100A (en) * | 1999-09-09 | 2001-03-21 | 本田技研工业株式会社 | Lubricating apparatus for engine |
| CN1386963A (en) * | 2001-05-17 | 2002-12-25 | 本田技研工业株式会社 | Oil pump mounting structure |
| JP3837346B2 (en) * | 2002-03-15 | 2006-10-25 | 株式会社クボタ | Different types of engines |
| CN101191444A (en) * | 2006-12-01 | 2008-06-04 | 上海比亚迪有限公司 | Internal combustion engine front cover |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363275A (en) * | 2012-03-29 | 2013-10-23 | 比亚迪股份有限公司 | Oil pump, engine front cover and engine |
| CN103363275B (en) * | 2012-03-29 | 2015-12-09 | 比亚迪股份有限公司 | A kind of oil pump, engine front cover lid and motor |
| CN103899430A (en) * | 2014-04-24 | 2014-07-02 | 台州九谊机电有限公司 | Front cover shell of automobile engine |
| CN108468641A (en) * | 2017-02-03 | 2018-08-31 | 福特全球技术公司 | Wear-resistant coating for oil pump chamber |
| CN108661902A (en) * | 2018-04-28 | 2018-10-16 | 浙江宏鼎汽摩配件股份有限公司 | A kind of automobile engine oil pump assembly and its production technology |
| CN108412631A (en) * | 2018-05-17 | 2018-08-17 | 台州市天人合塑料包装有限公司 | A kind of timing chain cover with lubricating oil pump |
| CN108412631B (en) * | 2018-05-17 | 2023-08-15 | 鼎欣吉盛科技(浙江)有限公司 | Timing chain cover with oil pump |
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Application publication date: 20101215 |