CN103994000A - Single-cylinder high-pressure oil pump used for diesel engine - Google Patents
Single-cylinder high-pressure oil pump used for diesel engine Download PDFInfo
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- CN103994000A CN103994000A CN201410221294.0A CN201410221294A CN103994000A CN 103994000 A CN103994000 A CN 103994000A CN 201410221294 A CN201410221294 A CN 201410221294A CN 103994000 A CN103994000 A CN 103994000A
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- oil
- runddichtringo
- live axle
- pump
- pump housing
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Abstract
The invention discloses a single-cylinder high-pressure oil pump used for a diesel engine, wherein the single-cylinder high-pressure oil pump is a supporting device of the diesel engine. The single-cylinder high-pressure oil pump comprises a high-pressure pump cover, an oil pipe joint base, an oil inlet metering valve, a pump body, a first O-shaped seal ring, an end cover, a sliding-vane-type oil delivery pump, a driving shaft, a first driving shaft bearing bush, a thrust washer, an idler wheel bearing bush, an idler wheel, a second driving shaft bearing bush, a second O-shaped seal ring, a flange bearing seat, an oil seal, an elastic retainer ring used for holes, a spring base, a plunger and barrel assembly, plunger springs, a locking nut, a third O-shaped seal ring, an oil valve part, a fourth O-shaped seal ring, an oil outlet valve spring, a fifth O-shaped seal ring, a sixth O-shaped seal ring, a flow-limiting valve part, an oil inlet bolt and an oil outlet bolt. The single-cylinder high-pressure oil pump used for the diesel engine is simple and compact in structure, flexible in matching, stable in oil supplying and low in machining cost and pollution emission control can be realized easily.
Description
Technical field
The invention belongs to automobile manufacturing field, relate to a kind of match equipment of diesel engine, relate in particular to a kind of use for diesel engine single cylinder high pressure oil pump.
Background technique
Along with the increasingly stringent of Abgasgesetz, high pressure co-rail system has become the main flow of diesel fuel injection system.High pressure oil pump is the critical component of high pressure co-rail system, and its technical merit has directly determined reliability, power character, the Economy of end product.Therefore, solve confession oil-proofness, the supply capability of high pressure oil pump, installability, with regard to the problem that has become product development to consider.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of use for diesel engine single cylinder high pressure oil pump is provided.
The object of the invention is to be achieved through the following technical solutions: a kind of use for diesel engine single cylinder high pressure oil pump, comprise: high pressure pump cover, oil connection seat, inlet metering valve, the pump housing, the one O RunddichtringO, end cap, vane fuel supply pump, live axle, the first live axle bearing shell, thrust washer, roller bearing shell, roller, the second live axle bearing shell, the 2nd O RunddichtringO, flange shaft bearing, oil sealing, circlip for hole, spring seat, plunger coupled parts, piston spring, locking nut, the 3rd O RunddichtringO, fuel tap parts, the 4th O RunddichtringO, oil outlet valve spring, the 5th O RunddichtringO, the 6th O RunddichtringO, flow-limiting valve parts, oil-feed bolt, go out oil draining bolt.
One end of described live axle is connected with the gear of motor, and the other end is connected with vane fuel supply pump; Oil connection seat and high pressure pump cover are threaded connection, and flow-limiting valve parts and the pump housing are threaded connection, and locking nut and high pressure pump cover are threaded connection; Plunger bushing in oil outlet valve spring, fuel tap parts and plunger coupled parts is fixed on high-pressure service pump and covers, and piston spring is enclosed within outside the plunger bushing of plunger coupled parts, and spring socket sleeve is on the plunger of plunger coupled parts; The 3rd O RunddichtringO and the 4th O RunddichtringO are enclosed within respectively in the annular groove of locking nut outside, form high-pressure service pump cover; High-pressure service pump cover is fixedly connected with the pump housing and passes through the 5th O RunddichtringO and the 6th O RunddichtringO and pump housing sealing, and locking nut, the 3rd O RunddichtringO and the 4th O RunddichtringO and pump housing mesopore form voltage stabilizing volume jointly; Roller bearing shell is pressed in the mesopore of roller, is enclosed within on the eccentric cam of live axle after becoming one; Thrust washer, the first live axle bearing shell and the second live axle axle bush sleeve are on live axle, and flange bearing cover for seat, on the pump housing, is fixedly connected with the pump housing, and by the 2nd O RunddichtringO and pump housing sealing; Between live axle and flange shaft bearing, pass through oil sealing sealing; Circlip for hole is connected with flange shaft bearing; Vane fuel supply pump is fixedly connected with the pump housing; End cap covers on vane fuel supply pump one end, is fixedly connected with and passes through the sealing of an O RunddichtringO and the pump housing with the pump housing; Inlet metering valve is fixedly connected with the pump housing; Oil-feed bolt and go out oil draining bolt and be threaded connection with the pump housing respectively.
Further, live axle inside is provided with lubricating oil path, and fluid is entered between live axle and the first live axle bearing shell, formed lubricant film in gap between live axle and the second live axle bearing shell and between live axle and roller bearing shell by this lubricating oil path.
Further, the material of described roller bearing shell is modification tetrafluoroethylene.
The invention has the beneficial effects as follows:
1. appearance structure of the present invention is simple, compact, and required installing space is little, is convenient to install;
2. design of part of the present invention is simple, greatly reduces the cost of raw material and processing;
3. the present invention has extended the working life of easily damaged parts, has reduced fault rate;
4. the present invention uses compulsory diesel fuel lubricity, is beneficial to the control of exhaust emission.
Brief description of the drawings
Fig. 1 is structure sectional view of the present invention;
Fig. 2 is structural front view of the present invention;
In figure, high pressure pump cover 1, oil connection seat 2, inlet metering valve 3, the pump housing 4, the one O RunddichtringO 5, end cap 6, vane fuel supply pump 7, key 8, live axle 9, the first screw 10, the first live axle bearing shell 11, thrust washer 12, roller bearing shell 13, roller 14, the second live axle bearing shell 15, the 2nd O RunddichtringO 16, the second screw 17, flange shaft bearing 18, oil sealing 19, circlip for hole 20, spring washer 21, nut 22, spring seat 23, plunger coupled parts 24, piston spring 25, locking nut 26, the 3rd O RunddichtringO 27, fuel tap parts 28, the 4th O RunddichtringO 29, oil outlet valve spring 30, the 5th O RunddichtringO 31, the 6th O RunddichtringO 32, the 3rd screw 33, the 4th screw 34, flow-limiting valve parts 35, the 5th screw 36, oil-feed bolt 37, go out oil draining bolt 38.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, use for diesel engine single cylinder high pressure oil pump of the present invention, comprise: high pressure pump cover 1, oil connection seat 2, inlet metering valve 3, the pump housing 4, the one O RunddichtringO 5, end cap 6, vane fuel supply pump 7, key 8, live axle 9, the first screw 10, the first live axle bearing shell 11, thrust washer 12, roller bearing shell 13, roller 14, the second live axle bearing shell 15, the 2nd O RunddichtringO 16, the second screw 17, flange shaft bearing 18, oil sealing 19, circlip for hole 20, spring washer 21, nut 22, spring seat 23, plunger coupled parts 24, piston spring 25, locking nut 26, the 3rd O RunddichtringO 27, fuel tap parts 28, the 4th O RunddichtringO 29, oil outlet valve spring 30, the 5th O RunddichtringO 31, the 6th O RunddichtringO 32, the 3rd screw 33, the 4th screw 34, flow-limiting valve parts 35, the 5th screw 36, oil-feed bolt 37, go out oil draining bolt 38.
One end of described live axle 9 is connected with the gear of motor with nut 22 by spring washer 21, and the other end is connected with vane fuel supply pump 7 by key 8; Oil connection seat 2 is threaded connection with high pressure pump cover 1, and flow-limiting valve parts 35 are threaded connection with the pump housing 4, and locking nut 26 is threaded connection with high pressure pump cover 1; Plunger bushing in oil outlet valve spring 30, fuel tap parts 28 and plunger coupled parts 24 is fixed on high pressure pump cover 1, and piston spring 25 is enclosed within outside the plunger bushing of plunger coupled parts 24, and spring seat 23 is enclosed within on the plunger of plunger coupled parts 24; The 3rd O RunddichtringO 27 and the 4th O RunddichtringO 29 are enclosed within respectively in the annular groove of locking nut 26 outsides, form high-pressure service pump cover; High-pressure service pump cover is fixedly connected with by the 3rd screw 33 with the pump housing 4 and seals with the pump housing 4 by the 5th O RunddichtringO 31 and the 6th O RunddichtringO 32, and locking nut 26, the 3rd O RunddichtringO 27 and the 4th O RunddichtringO 29 form voltage stabilizing volume jointly with the pump housing 4 mesopores; Roller bearing shell 13 is pressed in the mesopore of roller 14, is enclosed within on the eccentric cam of live axle 9 after becoming one; Thrust washer 12, the first live axle bearing shell 11 and the second live axle bearing shell 15 are enclosed within on live axle 9, and flange shaft bearing 18 is enclosed within on the pump housing 4, be fixedly connected with, and seal with the pump housing 4 by the 2nd O RunddichtringO 16 by the second screw 17 with the pump housing 4; Between live axle 9 and flange shaft bearing 18, seal by oil sealing 19; Circlip for hole 20 is connected with flange shaft bearing 18; Vane fuel supply pump 7 is fixedly connected with the pump housing 4 by the first screw 10; End cap 6 covers on vane fuel supply pump 7 one end, is fixedly connected with and seals with the pump housing 4 by an O RunddichtringO 5 by the first screw 36 with the pump housing 4; Inlet metering valve 3 is fixedly connected with by the 4th screw 34 with the pump housing 4; Oil-feed bolt 37 and go out oil draining bolt 38 and be threaded connection with the pump housing 4 respectively.
Described live axle 9 inside are provided with lubricating oil path, fluid is entered between live axle 9 and the first live axle bearing shell 11, is formed lubricant film in gap between live axle 9 and the second live axle bearing shell 15 and between live axle 9 and roller bearing shell 13 by this lubricating oil path, reduces wear.
The material of described roller bearing shell 13 is modification tetrafluoroethylene, has higher compression strength, wear-resisting, heat conduction good, and thermal expansion coefficient is little, not can with faying surface adhesion, can preserve for a long time, be difficult for agingly, increased reliability and the working life of product.
Working procedure of the present invention is as follows:
Fluid enters high pressure oil pump by oil-feed bolt 37, and the gear driven live axle 9 of motor rotates, and live axle 9 drives vane fuel supply pump 7 to rotate, and by the oil circuit on the pump housing 4, fluid is transported to voltage stabilizing volume from low pressure area, the opening and closing of the electrical signal control inlet metering valve 3 of inputting by outside, inlet metering valve 3 is opened rear fluid and is entered fuel tap parts 28 by high pressure pump cover 1, it is descending that plunger in plunger coupled parts 24 is subject to the spring-force driven dual of piston spring 25 to follow live axle 9, fuel tap parts 28 are subject to the cavity pressure impact of high pressure pump cover 1 and open, fluid enters into the cavity volume of plunger coupled parts 24, it is up that live axle 9 promotes plunger in plunger coupled parts 7, oil outlet valve spring 30 is subject to the impact of plunger coupled parts 7 cavity volume internal pressures and opens, fluid is pressed in high pressure pump cover 1, enter in oil pipe through oil connection seat 2, after inlet metering valve 3 cuts out, in the time that the pump housing 4 internal pressures reach flow-limiting valve parts 35 cracking pressure, fluid is successively by flow-limiting valve parts 35 with go out oil draining bolt 38 and get back to fuel tank.
What the present invention used is single plunger couple structure, and only live axle 9 cooperatings with single cam structure by a secondary plunger coupled parts 24, complete fuel feeding, and structure is simpler, compact, cost-saving; Voltage stabilizing volume in oil feeding line of the present invention is made up of jointly locking nut 26, the 3rd O RunddichtringO 27 and the 4th O RunddichtringO 29 and the pump housing 4 mesopores, vane fuel supply pump 7 imports to low pressure fluid after cushioning in this voltage stabilizing volume and enters in inlet metering valve 3, thereby reduce the impact of fluid to inlet metering valve 3, realize and stablize fuel feeding, extend the working life of inlet metering valve 3.
The present invention is applied in the oil common rail system of Light-duty Vehicle, can mate flexibly the motor below 70KW, and fuel feeding efficiency can reach 85%.
Claims (3)
1. a use for diesel engine single cylinder high pressure oil pump, it is characterized in that, comprise: high pressure pump cover (1), oil connection seat (2), inlet metering valve (3), the pump housing (4), the one O RunddichtringO (5), end cap (6), vane fuel supply pump (7), live axle (9), the first live axle bearing shell (11), thrust washer (12), roller bearing shell (13), roller (14), the second live axle bearing shell (15), the 2nd O RunddichtringO (16), flange shaft bearing (18), oil sealing (19), circlip for hole (20), spring seat (23), plunger coupled parts (24), piston spring (25), locking nut (26), the 3rd O RunddichtringO (27), fuel tap parts (28), the 4th O RunddichtringO (29), oil outlet valve spring (30), the 5th O RunddichtringO (31), the 6th O RunddichtringO (32), flow-limiting valve parts (35), oil-feed bolt (37), go out oil draining bolt (38),
One end of described live axle (9) is connected with the gear of motor, and the other end is connected with vane fuel supply pump (7); Oil connection seat (2) is threaded connection with high pressure pump cover (1), and flow-limiting valve parts (35) are threaded connection with the pump housing (4), and locking nut (26) is threaded connection with high pressure pump cover (1); Plunger bushing in oil outlet valve spring (30), fuel tap parts (28) and plunger coupled parts (24) is fixed on high pressure pump cover (1), piston spring (25) is enclosed within outside the plunger bushing of plunger coupled parts (24), and spring seat (23) is enclosed within on the plunger of plunger coupled parts (24); The 3rd O RunddichtringO (27) and the 4th O RunddichtringO (29) are enclosed within respectively in the outside annular groove of locking nut (26), form high-pressure service pump cover; High-pressure service pump cover is fixedly connected with the pump housing (4) and passes through the 5th O RunddichtringO (31) and the 6th O RunddichtringO (32) and the pump housing (4) sealing, and locking nut (26), the 3rd O RunddichtringO (27) and the 4th O RunddichtringO (29) form voltage stabilizing volume jointly with the pump housing (4) mesopore; Roller bearing shell (13) is pressed in the mesopore of roller (14), is enclosed within on the eccentric cam of live axle (9) after becoming one; Thrust washer (12), the first live axle bearing shell (11) and the second live axle bearing shell (15) are enclosed within on live axle (9), flange shaft bearing (18) is enclosed within on the pump housing (4), be fixedly connected with the pump housing (4), and by the 2nd O RunddichtringO (16) and the pump housing (4) sealing; Between live axle (9) and flange shaft bearing (18), seal by oil sealing (19); Circlip for hole (20) is connected with flange shaft bearing (18); Vane fuel supply pump (7) is fixedly connected with the pump housing (4); End cap (6) covers on vane fuel supply pump (7) one end, is fixedly connected with and passes through an O RunddichtringO (5) to seal with the pump housing (4) with the pump housing (4); Inlet metering valve (3) is fixedly connected with the pump housing (4); Oil-feed bolt (37) and go out oil draining bolt (38) and be threaded connection with the pump housing (4) respectively.
2. use for diesel engine single cylinder high pressure oil pump according to claim 1, it is characterized in that, described live axle (9) inside is provided with lubricating oil path, fluid is entered between live axle (9) and the first live axle bearing shell (11), in gap between live axle (9) and the second live axle bearing shell (15) and between live axle (9) and roller bearing shell (13), is formed lubricant film by this lubricating oil path.
3. use for diesel engine single cylinder high pressure oil pump according to claim 1, is characterized in that, the material of described roller bearing shell (13) is modification tetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410221294.0A CN103994000A (en) | 2014-05-25 | 2014-05-25 | Single-cylinder high-pressure oil pump used for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410221294.0A CN103994000A (en) | 2014-05-25 | 2014-05-25 | Single-cylinder high-pressure oil pump used for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103994000A true CN103994000A (en) | 2014-08-20 |
Family
ID=51308285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410221294.0A Pending CN103994000A (en) | 2014-05-25 | 2014-05-25 | Single-cylinder high-pressure oil pump used for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103994000A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508107A (en) * | 2016-01-14 | 2016-04-20 | 辽宁新风企业集团有限公司 | Integrated high-pressure oil pump assembly for high-pressure common-rail fuel injection system of diesel engine |
| CN105822476A (en) * | 2016-05-25 | 2016-08-03 | 辽阳新风科技有限公司 | High-pressure oil pump with oil inlet valve and diesel engine |
| CN105863917A (en) * | 2016-05-25 | 2016-08-17 | 辽阳新风科技有限公司 | High-pressure oil pump with electromagnetic valve and diesel engine |
| CN114738154A (en) * | 2022-04-25 | 2022-07-12 | 广西玉柴机器股份有限公司 | Driving shaft structure of fuel injection pump |
| CN114876687A (en) * | 2022-05-23 | 2022-08-09 | 东风商用车有限公司 | Leakage drainage device for high-pressure oil pump |
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| CN203925845U (en) * | 2014-05-25 | 2014-11-05 | 辽宁新风企业集团有限公司 | A kind of use for diesel engine single cylinder high pressure oil pump |
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2014
- 2014-05-25 CN CN201410221294.0A patent/CN103994000A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003129946A (en) * | 2001-10-25 | 2003-05-08 | Nachi Fujikoshi Corp | High pressure plunger pump |
| CN1795327A (en) * | 2003-05-22 | 2006-06-28 | 罗伯特·博世有限公司 | Check valve, especially for a high pressure pump of a fuel injection device for an internal combustion engine |
| CN101389858A (en) * | 2006-02-20 | 2009-03-18 | 罗伯特·博世有限公司 | High pressure pump in particular for a fuel injection device on an internal combustion engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508107A (en) * | 2016-01-14 | 2016-04-20 | 辽宁新风企业集团有限公司 | Integrated high-pressure oil pump assembly for high-pressure common-rail fuel injection system of diesel engine |
| CN105822476A (en) * | 2016-05-25 | 2016-08-03 | 辽阳新风科技有限公司 | High-pressure oil pump with oil inlet valve and diesel engine |
| CN105863917A (en) * | 2016-05-25 | 2016-08-17 | 辽阳新风科技有限公司 | High-pressure oil pump with electromagnetic valve and diesel engine |
| CN114738154A (en) * | 2022-04-25 | 2022-07-12 | 广西玉柴机器股份有限公司 | Driving shaft structure of fuel injection pump |
| CN114876687A (en) * | 2022-05-23 | 2022-08-09 | 东风商用车有限公司 | Leakage drainage device for high-pressure oil pump |
| CN114876687B (en) * | 2022-05-23 | 2023-11-03 | 东风商用车有限公司 | Leakage drainage device of high-pressure oil pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181022 Address after: 111299 Chaoyang Street, Shoushan Town, Liaoyang County, Liaoyang, Liaoning, 99-5 Applicant after: Liaoyang Ju Feng Beijing Great Automotive Components Company Limited Address before: 111299 Chaoyang Street, Shoushan Town, Liaoyang, Liaoning Applicant before: Liaoning Xinfeng Enterprise Group Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140820 |