CN201225278Y - Rotor type fuel delivery pump - Google Patents

Rotor type fuel delivery pump Download PDF

Info

Publication number
CN201225278Y
CN201225278Y CNU2008200535586U CN200820053558U CN201225278Y CN 201225278 Y CN201225278 Y CN 201225278Y CN U2008200535586 U CNU2008200535586 U CN U2008200535586U CN 200820053558 U CN200820053558 U CN 200820053558U CN 201225278 Y CN201225278 Y CN 201225278Y
Authority
CN
China
Prior art keywords
rotor
pump
transmission shaft
fuel
type fuel
Prior art date
Application number
CNU2008200535586U
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 CNU2008200535586U priority Critical patent/CN201225278Y/en
Application granted granted Critical
Publication of CN201225278Y publication Critical patent/CN201225278Y/en

Links

Abstract

The utility model relates to a rotary fuel-feed pump which comprises a pump cover 1, a pump body 2, an inner rotor 2, an outer rotor 4, a transmission shaft 5, an oil seal 6 and a rolling bearing 7, wherein the inner rotor 3 and the outer rotor 4 are arranged in the pump body 2, the outer end of the transmission shaft 5 is provided with a transmission groove, the middle part of the transmission shaft 5 is provided with the oil seal 6, and the rolling bearing 7 is arranged in the pump body 2. The utility model adopts the structures of the inner rotor and the outer rotor, increases the output of fuel, improves the feed pressure and the stability of the fuel, and reduces the flowing shock wave of the fuel. Because the oil supply pressure of the rotary pump is several times more than the pressure of a plunger piston pump, the rotary fuel-feed pump can achieve the purposes that a fuel injection system reaches the Euro III emission standard and the environment pollution is reduced. Meanwhile, the transmission shaft adopts a double supporting bearing structure and is connected with the inner rotor by adopting a flatted clearance, thereby the utility model reduces the assembly error produced by the hard connection of the shaft and the inner rotor, improves the stability and the flexibility as well as the shearing resistance of the driving of the transmission shaft, and increasing the movement accuracy of the inner rotor and the outer rotor as well as the equilibrium and the reliability and the service life of the transportation of the fuel.

Description

The rotator type fuel oil pump

Technical field

The utility model relates to a kind of oil transfer pump of engine fuel oil system, particularly a kind of rotator type fuel oil pump.

Background technique

What existing and oil-fired system were supporting is a kind of plunger type fuel oil pump, and this plunger type fuel oil pump is a kind ofly to adopt cam revolution drive plunger to-and-fro motion and carry out the fuel oil pump of pump oil, and the cam revolution once produces fuel feeding one time.Owing to be subjected to space and structural restriction, its plunger pump size and pump oil mass are restricted, and cause supplying fuel not enough and have a strong impact on the all-round performance of engine power; Simultaneously, because of plunger pump is intermittently to carry out pump oil, the pressure surge of generation is big, and oil supply system is impacted and instability; Moreover, because the average fuel transfer pressure of this oil transfer pump is low, causes fuel injection system efficient difference and produce environmental pollution.

Summary of the invention

The purpose of this utility model is the above-mentioned deficiency that overcomes prior art, and a kind of fuel feed amount that can increase is provided, and improves charge oil pressure, promotes the normal performance of the duty of engine, reduces the rotator type fuel oil pump of fuel transfer system impact and environmental pollution.

The technical solution of the utility model is: a kind of rotator type fuel oil pump, it comprises pump cover, the pump housing, internal rotor, external rotor, transmission shaft, oil sealing, rolling bearing, transmission shaft is installed in pump housing axis hole and the rolling bearing, the inner internal rotor that connects, oil sealing is equipped with at the middle part, precision-matched, can stablize the internal rotor and the external rotor that carry out fuel delivery and be installed in the pump housing.

The further technological scheme of the utility model is: the transmission shaft outer end is provided with transmission groove.

The utility model further technological scheme is: transmission shaft adopts the dual-supporting bearing structure to be installed in the pump housing.

The further again technological scheme of the utility model is: internal rotor adopts flat side gap to connect with transmission shaft.

The utility model adopts the inner and outer rotors structure, has increased the oil transportation amount of fuel oil, has improved fuel delivery pressure and stability, has reduced the shock wave of fuel flow, for the performance of oil-fired system energy provides reliable assurance.Because this rotor pump charge oil pressure than the high several times of plunger pump pressure, can satisfy fuel injection system, reach the purpose of Europe III emission standard and minimizing environmental pollution.Simultaneously, its transmission shaft adopts the dual-supporting bearing structure, adopt flat side gap to connect with internal rotor, reduce the assembly error that axle and internal rotor connect generation firmly, stability, flexibility and shear resistance that transmission shaft rotates have been improved, balance, reliability and the working life of having improved the kinematic accuracy and the fuel delivery of inner and outer rotors.

Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view of Fig. 1.

Embodiment

As Fig. 1, shown in 2: a kind of rotator type fuel oil pump, it comprises pump cover 1, the pump housing 2, internal rotor 3, external rotor 4, transmission shaft 5, oil sealing 6, rolling bearing 7, pump cover 1 is installed on the pump housing 2, on the pump housing 2 axis hole is arranged, precision-matched, the internal rotor 3 and the external rotor 4 that can stable carry out fuel delivery are installed in the pump housing 2, internal rotor 3 adopts flat side gap to connect with transmission shaft 5, the assembly error that connects generation with minimizing axle and internal rotor firmly, transmission shaft 5 outer ends are provided with transmission groove, the inner adopts flat side gap to connect with internal rotor 3, oil sealing 6 is equipped with at the middle part, transmission shaft 5 adopts the dual-supporting bearing structure to be installed in the axis hole and rolling bearing 7 of the pump housing 2, and rolling bearing 7 is installed in the pump housing 2.

Claims (5)

1, a kind of rotator type fuel oil pump, it comprises pump cover, the pump housing, internal rotor, external rotor, transmission shaft, oil sealing, rolling bearing, transmission shaft is installed in pump housing axis hole and the rolling bearing, the inner internal rotor that connects, oil sealing is equipped with at the middle part, it is characterized in that precision-matched, can stablize the internal rotor and the external rotor that carry out fuel delivery and be installed in the pump housing.
2, rotator type fuel oil pump according to claim 1 is characterized in that the transmission shaft outer end is provided with transmission groove.
3, rotator type fuel oil pump according to claim 1 and 2 is characterized in that transmission shaft adopts the dual-supporting bearing structure to be installed in the pump housing.
4, rotator type fuel oil pump according to claim 1 and 2 is characterized in that internal rotor and transmission shaft adopt flat side gap to connect.
5, rotator type fuel oil pump according to claim 3 is characterized in that internal rotor and transmission shaft adopt flat side gap to connect.
CNU2008200535586U 2008-06-27 2008-06-27 Rotor type fuel delivery pump CN201225278Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200535586U CN201225278Y (en) 2008-06-27 2008-06-27 Rotor type fuel delivery pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200535586U CN201225278Y (en) 2008-06-27 2008-06-27 Rotor type fuel delivery pump

Publications (1)

Publication Number Publication Date
CN201225278Y true CN201225278Y (en) 2009-04-22

Family

ID=40598164

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200535586U CN201225278Y (en) 2008-06-27 2008-06-27 Rotor type fuel delivery pump

Country Status (1)

Country Link
CN (1) CN201225278Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759121A (en) * 2014-01-17 2014-04-30 东风汽车泵业有限公司 Rotor-type variable pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759121A (en) * 2014-01-17 2014-04-30 东风汽车泵业有限公司 Rotor-type variable pump

Similar Documents

Publication Publication Date Title
US6758656B2 (en) Multi-stage internal gear/turbine fuel pump
JP5629371B2 (en) Planetary rotary fluid motor or motor and compressor or pump
DE102011118895A1 (en) Electric wastegate actuator for a turbocharger
CN102483057B (en) Gear pump
WO2009143832A3 (en) Controllable coolant pump
CN201068857Y (en) Pipeline-type fuel-oil transfer pump
KR101254232B1 (en) Electric waste gate actuator for turbochager
CN202628254U (en) Cooling device for engine turbocharger and intercooler
US20200063728A1 (en) Energy-storing-type high pressure electric fuel pump, fuel-supplying apparatus, and applications thereof
CN101532500A (en) High-performance totally-enclosed magnetic pump
EP2456966B1 (en) Constant velocity engine/technology
DE102007034036A1 (en) High-pressure fuel pump with roller tappet
WO2013023607A1 (en) Jet rotary motor
CN201680136U (en) Oil pump with variable oil discharge quantity
CN104395597A (en) Fuel pump assembly
CN104724614B (en) Crane with interchangeable driving unit
CN105275037A (en) Hydraulic breaking hammer
CN200943554Y (en) Multiple fuel diesel engine fuel injection pump
CN201531383U (en) Swash plate type axial piston pump
CN201396273Y (en) Novel ultra-high pressure gear oil pump
JP2011190763A (en) Rotary pump
KR20140032034A (en) Oil pressure supply system of automatic transmission
CN201851241U (en) High-pressure fuel oil pump
CN102777299A (en) Diesel engine variable injection timing oil injection pump
KR101393586B1 (en) Structure of engine

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090422

Termination date: 20170627

CF01 Termination of patent right due to non-payment of annual fee