CN200985813Y - Engine oil pressure-limiting oilchannel - Google Patents

Engine oil pressure-limiting oilchannel Download PDF

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Publication number
CN200985813Y
CN200985813Y CN 200620016319 CN200620016319U CN200985813Y CN 200985813 Y CN200985813 Y CN 200985813Y CN 200620016319 CN200620016319 CN 200620016319 CN 200620016319 U CN200620016319 U CN 200620016319U CN 200985813 Y CN200985813 Y CN 200985813Y
Authority
CN
China
Prior art keywords
oil
pressure
engine oil
outlet
limit valve
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 - Lifetime
Application number
CN 200620016319
Other languages
Chinese (zh)
Inventor
文志斐
田雨生
宋旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to CN 200620016319 priority Critical patent/CN200985813Y/en
Application granted granted Critical
Publication of CN200985813Y publication Critical patent/CN200985813Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an engine oil pressure limiting oil line, leading the outlet to the inlet side and arranging the pressure limiting valve at the inlet side through changing the outlet structure of the oil pump. In this way, the pressure of the engine oil reaches the prescribed value; the pressure limiting valve opens and the unwanted engine oil directly returns to the inlet of the oil pump, having compact structure. An engine oil collector is directly connected with the pressure limiting valve and the pressure limiting valve allows a little leakage; the leaked engine oil directly flows to the outlet of the engine oil collector. If the engine oil collector is blocked, the pressure of the inlet opposite to the outlet minifies and the pressure difference of the inlet enlarges, the pressure limiting valve will also open so as to keep the oil line shortly cycle in the oil pump. The utility model also can effectively avoid engine oil bubble to improve the efficiency of the engine oil pump.

Description

Oil Pressure Limiting Oil Road
Technical field
The utility model relates to a kind of Oil Pressure Limiting Oil Road, in particular for the pressure limiting oil circuit of the oil pump of engine lubrication.
Technical background
When oil pump is worked,, then will increase engine power loss if when engine oil pressure is higher.Therefore, oil circuit need be arranged to the pressure limiting oil circuit, its effect is the MTP in the restriction oil circuit.
Oil Pressure Limiting Oil Road generally comprises oil pump and the pressure-limit valve that is installed on wherein.Usually, pressure-limit valve is contained on the main oil gallery of oil pump or cylinder block, perhaps is installed on oil pump upper outlet place.When if pressure-limit valve is installed in oil pump upper outlet place, because oil trap is contained in oil pump inlet, so pressure-limit valve does not directly link to each other with oil trap, need take seal approach in the pressure-limit valve outer end, when if oil pressure reaches specified value, unnecessary machine oil returns the oil pump import; If pressure-limit valve is installed on the main oil gallery, then when oil pressure reached specified value, unnecessary machine oil flowed back to oil sump through pressure-limit valve.
If oil pressure reaches specified value, pressure-limit valve is opened, if machine oil returns the oil pump import, solution pressure-limit valve leakage problems not yet in effect needs in outer end increase seal approach; If machine oil flows directly to oil sump, can produce bubble, lower efficiency; If oil trap stops up, circulation can't be kept.
The model utility content
The utility model is exactly in order to solve the engine oil pressure limiting problem, proposes a kind of Oil Pressure Limiting Oil Road.
For this reason, Oil Pressure Limiting Oil Road of the present utility model comprises oil pump, pressure-limit valve, oil trap, and oil pump and oil trap are connected and fixed, and the import of oil pump links to each other with the outlet of oil trap; It is characterized in that: the oil pump outlet is communicated with pressure-limit valve by being communicated with oil duct, and the pressure limiting valve port of pressure-limit valve links to each other with import by nearly import oil pocket.
According to embodiment of the present utility model, Oil Pressure Limiting Oil Road of the present utility model can also comprise following feature:
Described pressure-limit valve directly links to each other with oil trap, and the seepage machine oil of pressure-limit valve enters oil trap by the seepage oil pocket, thereby continues to enter the oil pump circulation with import.
Pressure-limit valve is provided with limiting valve spring, and the limiting valve spring the other end is located on the spring seat.
The scheme advantage that the utility model proposes is as follows:
The utility model has been guided to suction side by changing the oil pump export structure with outlet, and pressure-limit valve is arranged in suction side.Like this, engine oil pressure reaches specified value, and pressure-limit valve is opened, and unnecessary machine oil directly turns back to oil pump import, compact structure.
Oil trap directly links to each other with pressure-limit valve, allows pressure-limit valve that a small amount of seepage is arranged, and the machine oil of seepage has flowed directly to the oil trap outlet; If oil trap stops up, the pressure in the relative outlet port of inlet diminishes, and it is big that the inlet and outlet pressure difference becomes, and pressure-limit valve still can be opened, and can keep oil circuit short-term circulation in oil pump like this.
The utility model can also effectively avoid occurring oil bubbles, and oil pump efficient is raise.
Description of drawings
Fig. 1 is the utility model embodiment's a pressure limiting oil channel structures schematic representation.
Fig. 2 is that the utility model embodiment oil circuit flows to schematic representation.
Fig. 3 A, 3B, 3C, 3D are that schematic representation is divided with the sealing position in the utility model embodiment oil circuit position.
Embodiment
As shown in Figure 1, wherein, 1 is oil pump, and 2 is external rotor, and 3 is internal rotor, and 4 is pressure-limit valve, and 5 is limiting valve spring, and 6 are the pressure limiting valve spring retainer, and 7 is back-up ring, and 8 is the oil trap packing ring, and 9 is oil trap.Wherein the effect of pressure-limit valve 4, limiting valve spring 5 and limiting valve spring seat 6 is the MTPs in the restriction oil circuit.
By Fig. 1,2 as seen, the design of this pressure limiting loop will export D and guide to import A side by changing oil pump outlet shape, and pressure-limit valve 4 is arranged between the import and export.The A place is import among Fig. 2, and the D place is outlet, is communicated with in being communicated with oil duct E place, and pressure-limit valve 4 is the oil circuit positions that are contained in as F place among Fig. 2, assembly relation as shown in fig. 1.Guide to import A side for exporting D, only need between the two, to increase oil groove and get final product.In order clearly to represent the position of oil circuit, among Fig. 3 A, oil circuit position and sealing position are divided with grid line, it is exactly the face that seals with other part that the grid place is arranged, and the place of intermediate blank is exactly an oil circuit.Wherein Fig. 3 B is an A-A view among Fig. 3 A, and Fig. 3 C is a B-B view among Fig. 3 A, and Fig. 3 D is the C-C view among Fig. 3 C.
Like this, lubricating oil pressure reaches specified value, and pressure-limit valve 4 is opened, and unnecessary machine oil directly turns back to oil pump import A, compact structure; Oil trap 9 directly links to each other with pressure-limit valve 4, allows pressure-limit valve that a small amount of seepage is arranged, and the machine oil of seepage has flowed directly to oil trap 9 outlets; If oil trap 9 stops up, the import A place pressure at outlet D place relatively diminishes, and it is big that the inlet and outlet pressure difference becomes, and pressure-limit valve 4 still can be opened, and can keep oil circuit short-term circulation in oil pump like this.
Its oil duct moves towards as follows: enter oil pump body 1 from import A behind machine oil process oil trap 9 prefiltrations of oil sump, flow in the nearly import oil pocket B, under the effect of internal rotor 2 and external rotor 3, machine oil is taken in the nearly outlet oil pocket C, when oil pressure just often, machine oil enters the oil filter filtering through the hole at outlet D place, enters into the main oil gallery of cylinder body then, finishes the lubricated task of motor; If engine oil pressure reaches specified value, pressure-limit valve is opened, and machine oil flows to the pressure limiting valve port at the E place that import A and outlet D be communicated with, and goes out from the orifice flow of F, enters once more in the oil pocket B; And the seepage machine oil of pressure-limit valve flows directly in the seepage oil pocket G, thereby continues to enter the oil pump circulation with A.
As seen, the described structure of this patent, compact structure not only, oil pump efficient raises, and has avoided occurring oil bubbles; And handled the pressure-limit valve sealing problem well; If trap stops up, also can keep oil circuit and circulate in a short time.
The single line arrow is represented the oil duct flow direction among Fig. 2, and four-headed arrow is represented installation direction, and pressure-limit valve, limiting valve spring, spring seat are contained in F, the G hole, and oil trap and oil pump install and fix by bolt.Machine oil concentrates in the oil sump at first, is drawn onto oil pump through trap.

Claims (3)

1. an Oil Pressure Limiting Oil Road comprises oil pump (1), pressure-limit valve (4), oil trap (9), and oil pump (1) is connected and fixed with oil trap (9), and the import (A) of oil pump (1) links to each other with the outlet of oil trap (9); It is characterized in that: oil pump (1) outlet (D) is communicated with pressure-limit valve (4) by being communicated with oil duct (E), and the pressure limiting valve port of pressure-limit valve (4) is connected with import (A) by nearly import oil pocket (B).
2. Oil Pressure Limiting Oil Road as claimed in claim 1, it is characterized in that, described pressure-limit valve (4) directly links to each other with oil trap (9), and the seepage machine oil of pressure-limit valve (4) enters oil trap (9) by seepage oil pocket (G), thereby continues to enter the oil pump circulation with import (A).
3. Oil Pressure Limiting Oil Road as claimed in claim 2 is characterized in that, pressure-limit valve (4) is provided with limiting valve spring (5), and limiting valve spring (5) the other end is located on the spring seat (6).
CN 200620016319 2006-12-06 2006-12-06 Engine oil pressure-limiting oilchannel Expired - Lifetime CN200985813Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620016319 CN200985813Y (en) 2006-12-06 2006-12-06 Engine oil pressure-limiting oilchannel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620016319 CN200985813Y (en) 2006-12-06 2006-12-06 Engine oil pressure-limiting oilchannel

Publications (1)

Publication Number Publication Date
CN200985813Y true CN200985813Y (en) 2007-12-05

Family

ID=38915271

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620016319 Expired - Lifetime CN200985813Y (en) 2006-12-06 2006-12-06 Engine oil pressure-limiting oilchannel

Country Status (1)

Country Link
CN (1) CN200985813Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435529B (en) * 2008-12-17 2011-07-13 奇瑞汽车股份有限公司 Engine oil pump
CN102032015B (en) * 2009-09-29 2012-10-03 湖南机油泵股份有限公司 Oil expelling-preventing safe oil pump
CN102966407A (en) * 2012-11-29 2013-03-13 长城汽车股份有限公司 Oil pump and engine using same
CN103016936A (en) * 2011-09-28 2013-04-03 上海乾通汽车附件有限公司 Pressure-limiting valve spring for oil pump assemblies of gasoline engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435529B (en) * 2008-12-17 2011-07-13 奇瑞汽车股份有限公司 Engine oil pump
CN102032015B (en) * 2009-09-29 2012-10-03 湖南机油泵股份有限公司 Oil expelling-preventing safe oil pump
CN103016936A (en) * 2011-09-28 2013-04-03 上海乾通汽车附件有限公司 Pressure-limiting valve spring for oil pump assemblies of gasoline engines
CN102966407A (en) * 2012-11-29 2013-03-13 长城汽车股份有限公司 Oil pump and engine using same
CN102966407B (en) * 2012-11-29 2015-06-10 长城汽车股份有限公司 Oil pump and engine using same

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
LIC Patent licence contract for exploitation submitted for record

Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.25 TO 2016.7.11

Name of requester: BIYADI AUTOMOBILE CO., LTD., SHENZHEN CITY

Effective date: 20080513

EE01 Entry into force of recordation of patent licensing contract

Assignee: Shenzhen BYD Auto Co., Ltd.

Assignor: Biyadi Co., Ltd.

Contract fulfillment period: 2008.4.25 to 2016.7.11

Contract record no.: 2008440000079

Denomination of utility model: Engine oil pressure-limiting oilchannel

Granted publication date: 20071205

License type: General permission

Record date: 20080513

EXPY Termination of patent right or utility model
CX01 Expiry of patent term

Granted publication date: 20071205