CN201892018U - Reflux pressure limiting rotor oil pump - Google Patents

Reflux pressure limiting rotor oil pump Download PDF

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Publication number
CN201892018U
CN201892018U CN2010206229581U CN201020622958U CN201892018U CN 201892018 U CN201892018 U CN 201892018U CN 2010206229581 U CN2010206229581 U CN 2010206229581U CN 201020622958 U CN201020622958 U CN 201020622958U CN 201892018 U CN201892018 U CN 201892018U
Authority
CN
China
Prior art keywords
pressure limiting
oil
hole
pump
pressure
Prior art date
Application number
CN2010206229581U
Other languages
Chinese (zh)
Inventor
许仲秋
向志奇
Original Assignee
湖南机油泵股份有限公司
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 湖南机油泵股份有限公司 filed Critical 湖南机油泵股份有限公司
Priority to CN2010206229581U priority Critical patent/CN201892018U/en
Application granted granted Critical
Publication of CN201892018U publication Critical patent/CN201892018U/en

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Abstract

The utility model discloses a reflux pressure limiting rotor oil pump, which comprises a pump body, a pump cover, an outer rotor, an inner rotor, a transmission shaft, a plug screw, a pressure limiting spring, a pressure limiting valve core and an oil transportation hole plug screw, wherein the pressure limiting valve core is similar to the appearance of a stemmed goblet, i.e. the shape of a long rod of which both ends are big and the middle is small; the small middle part forms a circular groove; the length of the circular slot is greater than the pitch between an oil inlet chamber hole and an oil outlet chamber hole. In the utility model, the long pole circular groove-shaped pressure limiting valve core, the circular groove is capable of spanning the oil inlet chamber hole and the oil outlet chamber hole to make the oil outlet chamber hole and the oil inlet chamber hole directly communicated to make overhigh-pressure oil flow to an oil inlet chamber at short distance, therefore, the engine oil pressure of a main oil gallery is stabilized, the power consumption of the oil pump can also be reduced, the safety and the reliability of the whole lubricating system are improved and the service life of an engine is prolonged.

Description

Backflow pressure limiting rotor engine oil pump

Technical field

The utility model relates to a kind of rotor engine oil pump, particularly a kind of backflow pressure limiting rotor engine oil pump.

Background technique

Engine oil pressure in existing oil pump and the oil duct is regulated, for the external pressure-limit valve is outwards drained voltage regulating mode.Its deficiency is: useful horsepower and Economy that motor has mainly been wasted in outside oil extraction.

Summary of the invention

Technical problem to be solved in the utility model is the deficiency that overcomes on the prior art, and a kind of energy-saving and cost-reducing, advanced rational backflow pressure limiting rotor engine oil pump of structure is provided, be used Security, reliability and the working life that can improve oil pump and oil duct system with the damping oilhole.

Technical problem to be solved in the utility model can be achieved through the following technical solutions:

A kind of backflow pressure limiting rotor engine oil pump, comprise the pump housing, pump cover, external rotor, internal rotor, transmission shaft, plug screw, pressure limiting spring, pressure limiting spool and oil transportation hole plug screw, described pump cover is installed on the pump housing, described transmission shaft is installed in the axis hole of the pump housing and pump cover, internal rotor interference interior with being installed in the pump housing in the middle of the transmission shaft is connected, and external rotor is installed in the pump housing and by internal rotor and drives; In the described pump housing, be provided with into and out of oil pocket, pressure limiting valve opening, oil transportation hole, described oil transportation hole one end is by the oil transportation hole plug screw sealing that screws in the oil transportation hole, be communicated with at the bottom of the hole of the other end in oil transportation hole and described pressure limiting valve opening, described into and out of oil pocket respectively by being communicated with the pressure limiting valve opening into and out of the oil pocket hole, into and out of the oil pocket hole along axially spaced-apart one segment distance of pressure limiting valve opening; Described plug screw is installed in pressure limiting spring and pressure limiting spool in the pressure limiting valve opening, pressure limiting spool one end contacts with the pressure limiting spring, the other end of pressure limiting spool seals up at the bottom of the hole of pressure limiting valve opening, it is characterized in that, the little stock shape in big centre, two of the approximate tallboy profile of described pressure limiting spool, middle little part constitutes a circular groove, and the length of this circular groove is greater than into and out of the pitch-row between the oil pocket hole.

Working principle of the present utility model is: when engine speed increases, engine oil pressure in the fuel-displaced lumen pore raises, the engine oil pressure difference that goes out oil pocket and oil suction chamber increases, at this moment, pressure oil in the main oil gallery enters at the bottom of the hole of pressure limiting valve opening through the oil transportation hole, the resistance that pressure oil promotion pressure limiting spool overcomes the pressure limiting spring moves to pressure limiting spring one end, when the circular groove termination at pressure limiting spool middle part moves to fuel-displaced lumen pore, the pressure oil that goes out in the oil pocket flows into oil suction chamber through the circular groove position of pressure limiting spool, use oil pocket inner engine oil pressure and progressively reduce, reach the purpose of stablizing motor main oil gallery inner engine oil pressure.

The utility model compared with prior art has following characteristics: owing to adopt the pressure limiting spool of stock circular groove shape, its circular groove can be crossed over into and out of the oil pocket hole, use the oil pocket hole and the oil-feed lumen pore directly is communicated with, closely too high pressure oil is flowed to oil suction chamber, not only stablize the engine oil pressure of main oil gallery, but also can reduce the power consumpiton of oil pump, improve the working life of Security, reliability and the prolongation motor of haveing suffered lubrication system.

Description of drawings

Fig. 1 is the structural representation of the utility model backflow pressure limiting rotor engine oil pump.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth mode of execution of the present utility model.

A kind of backflow pressure limiting rotor engine oil pump as shown in Figure 1 comprises the pump housing 1, pump cover 2, external rotor 3, internal rotor 4, transmission shaft 5, plug screw 6, pressure limiting spring 7, pressure limiting spool 8 and oil transportation hole plug screw 9, pump cover 2 is installed on the pump housing 1, transmission shaft 5 is installed in the axis hole of the pump housing 1 and pump cover 2, in the middle of the transmission shaft 5 be installed in the pump housing 1 in internal rotor 4 interference is connected, it is interior and by internal rotor 4 drivings that external rotor 3 is installed in the pump housing 1.

In the pump housing 1, be provided with oil suction chamber 15, go out oil pocket 14, pressure limiting valve opening 16, oil transportation hole 11, oil transportation hole 11 1 ends are by oil transportation hole plug screw 9 sealings that screw in the oil transportation hole 11, be communicated with at the bottom of the hole of the other end in oil transportation hole 11 and pressure limiting valve opening 16, oil suction chamber 15, go out oil pocket 14 and be communicated with pressure limiting valve opening 16 by oil-feed lumen pore 12, fuel-displaced lumen pore 13 respectively, oil-feed lumen pore 12, fuel-displaced lumen pore 13 are along axially spaced-apart one segment distance of pressure limiting valve opening 16; Plug screw 6 is installed in pressure limiting spring 7 and pressure limiting spool 8 in the pressure limiting valve opening 16, pressure limiting spool 8 one ends contact with pressure limiting spring 7, the other end seals up at the bottom of the hole of pressure limiting valve opening 16, the little stock shape in big centre, two of pressure limiting spool 8 approximate tallboy profiles, middle little part constitutes a circular groove 81, and the length of this circular groove 81 is greater than the pitch-row between oil-feed lumen pore 12, the fuel-displaced lumen pore 13.

When engine speed increases, engine oil pressure in the fuel-displaced lumen pore 13 raises, going out oil pocket 14 increases with oil suction chamber 15 engine oil pressure differences, at this moment, pressure oil in the main oil gallery enters the bottom of pressure limiting valve opening 16 through oil transportation hole 11, the resistance that promotion pressure limiting spool 8 overcomes pressure limiting spring 7 moves to pressure limiting spring 7 one ends, when circular groove termination, pressure limiting spool 8 middle part moves to fuel-displaced lumen pore 13, pressure oil in the fuel-displaced lumen pore 13 flows into oil suction chamber 15 through circular groove 81 positions of pressure limiting spool 8, use oil pocket 14 and main oil gallery inner engine oil pressure progressively reduces, reach the purpose of stablizing motor main oil gallery inner engine oil pressure.

More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. backflow pressure limiting rotor engine oil pump, comprise the pump housing, pump cover, external rotor, internal rotor, transmission shaft, plug screw, pressure limiting spring, pressure limiting spool and oil transportation hole plug screw, described pump cover is installed on the pump housing, described transmission shaft is installed in the axis hole of the pump housing and pump cover, internal rotor interference interior with being installed in the pump housing in the middle of the transmission shaft is connected, and external rotor is installed in the pump housing and by internal rotor and drives; In the described pump housing, be provided with into and out of oil pocket, pressure limiting valve opening, oil transportation hole, described oil transportation hole one end is by the oil transportation hole plug screw sealing that screws in the oil transportation hole, be communicated with at the bottom of the hole of the other end in oil transportation hole and described pressure limiting valve opening, described into and out of oil pocket respectively by being communicated with the pressure limiting valve opening into and out of the oil pocket hole, into and out of the oil pocket hole along axially spaced-apart one segment distance of pressure limiting valve opening; Described plug screw is installed in pressure limiting spring and pressure limiting spool in the pressure limiting valve opening, pressure limiting spool one end contacts with the pressure limiting spring, the other end of pressure limiting spool seals up at the bottom of the hole of pressure limiting valve opening, it is characterized in that, the little stock shape in big centre, two of the approximate tallboy profile of described pressure limiting spool, middle little part constitutes a circular groove, and the length of this circular groove is greater than into and out of the pitch-row between the oil pocket hole.
CN2010206229581U 2010-11-25 2010-11-25 Reflux pressure limiting rotor oil pump CN201892018U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206229581U CN201892018U (en) 2010-11-25 2010-11-25 Reflux pressure limiting rotor oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206229581U CN201892018U (en) 2010-11-25 2010-11-25 Reflux pressure limiting rotor oil pump

Publications (1)

Publication Number Publication Date
CN201892018U true CN201892018U (en) 2011-07-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206229581U CN201892018U (en) 2010-11-25 2010-11-25 Reflux pressure limiting rotor oil pump

Country Status (1)

Country Link
CN (1) CN201892018U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016940A (en) * 2012-12-18 2013-04-03 中国人民解放军军事交通学院 Vehicle energy-saving oil pump
WO2013143479A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
WO2013143476A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
CN103363277A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
CN103363275A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
CN103363276A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
US9752472B2 (en) 2012-03-29 2017-09-05 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103363277B (en) * 2012-03-29 2015-12-02 比亚迪股份有限公司 A kind of oil pump, engine front cover lid and motor
WO2013143479A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
WO2013143476A1 (en) * 2012-03-29 2013-10-03 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
CN103363277A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
CN103363275A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Oil pump, engine front cover and engine
CN103363276A (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
CN103363276B (en) * 2012-03-29 2016-04-27 比亚迪股份有限公司 A kind of oil pump, engine front cover lid and motor
US9512837B2 (en) 2012-03-29 2016-12-06 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
US9752472B2 (en) 2012-03-29 2017-09-05 Shenzhen Byd Auto R&D Company Limited Oil pump, engine cover and engine comprising the same
US9869313B2 (en) 2012-03-29 2018-01-16 Shenzhen Byd Auto R&D Company Limtied Oil pump, engine cover and engine comprising the same
CN103016940A (en) * 2012-12-18 2013-04-03 中国人民解放军军事交通学院 Vehicle energy-saving oil pump

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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: 20110706

Termination date: 20121125