CN202628343U - Cam shaft of fuel oil supply pump of motor vehicle engine - Google Patents

Cam shaft of fuel oil supply pump of motor vehicle engine Download PDF

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Publication number
CN202628343U
CN202628343U CN 201220314985 CN201220314985U CN202628343U CN 202628343 U CN202628343 U CN 202628343U CN 201220314985 CN201220314985 CN 201220314985 CN 201220314985 U CN201220314985 U CN 201220314985U CN 202628343 U CN202628343 U CN 202628343U
Authority
CN
China
Prior art keywords
roller
cam
cam shaft
oil supply
fuel oil
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 201220314985
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Chinese (zh)
Inventor
周斌
王亚会
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.)
CHONGQING FUEL-OIL JET SYSTEM Co Ltd CHINA HEAVY AUTOMOBILE GROUP
Original Assignee
CHONGQING FUEL-OIL JET SYSTEM Co Ltd CHINA HEAVY AUTOMOBILE GROUP
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 CHONGQING FUEL-OIL JET SYSTEM Co Ltd CHINA HEAVY AUTOMOBILE GROUP filed Critical CHONGQING FUEL-OIL JET SYSTEM Co Ltd CHINA HEAVY AUTOMOBILE GROUP
Priority to CN 201220314985 priority Critical patent/CN202628343U/en
Application granted granted Critical
Publication of CN202628343U publication Critical patent/CN202628343U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Fuel-Injection Apparatus (AREA)

Abstract

The utility model discloses a cam shaft of a fuel oil supply pump of a motor vehicle engine. The cam shaft comprises a cam and a roller, which are matched with each other, wherein a rim of the cam is recessed; and the surface shape of the rim of the cam is matched with that of the rim of the roller. The cam shaft of the fuel oil supply pump of the motor vehicle engine has the advantages that under the conditions of high rotating speed and high load, the cam shaft can effectively constrain the axial shifting of the roller, the plane friction of a large plane between the roller and a roller body is avoided, and the roller is prevented from being abraded. The cam shaft can bear high load and rotate at high speed on the original basis, and the working reliability of the fuel oil supply pump under the conditions of high rotating speed and high load is improved.

Description

Motor car engine fuel feed pump camshaft
Technical field
The utility model relates to a kind of motor car engine fuel feed pump, is specifically related to a kind of motor car engine fuel feed pump camshaft.
Background technique
Motor car engine fuel feed pump camshaft is an important spare part in the fuel feed pump; Play engine-driving power is passed to the roller body assembly, convert rotatablely moving of camshaft into plunger member upper and lower reciprocating important function by the roller body assembly.Motor car engine fuel feed pump camshaft generally all adopts cam to contact transmission power with the roller of roller body assembly, and the damage of roller body assembly or inefficacy will directly cause the trunk piston set cisco unity malfunction, causes whole fuel feed pump work to lose efficacy.
The proper functioning and the reliability of the good and bad pair roller body assembly of the cam structure of camshaft, performance play conclusive significant role.The cam and the roller contacting point of existing technology motor car engine fuel feed pump camshaft are straight line.Obviously, under the bigger situation of load, roller lacks kinematic constraint; Be prone to way roller body one side play and wear and tear with roller body, in case serious wear, with damage that causes the roller body assembly or inefficacy; To directly cause the trunk piston set cisco unity malfunction, and cause whole fuel feed pump work to lose efficacy.
Summary of the invention
The utility model is to the deficiency that exists in the background technique, and the technical problem that solve is: provide a kind of cam to contact with roller closely, the camshaft of a side play of less roller way roller body.
The utility model is for solving the problems of the technologies described above; The technological scheme of taking is: a kind of motor car engine fuel feed pump camshaft; The cam and the roller that comprise mutual coupling; Its improvement is: the wheel rim indent of cam, and the surface configuration of the surface configuration of cam wheel rim and roller wheel rim is complementary.
The utility model compared with prior art, beneficial effect is: camshaft is under high rotating speed and high load, but the axial float of operative constraint roller has been avoided the big plane generating plane friction between roller and the roller body, prevents rolling wheel wear.Camshaft can bear bigger load and the rotating speed of Geng Gao on the original basis, has strengthened the reliability that the fuel feed pump is worked under high load, high rotating speed.
Description of drawings
Fig. 1 is the work schematic representation of existing technology motor car engine fuel feed pump cam;
Fig. 2 is the plan view of existing cam;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the plan view of the utility model cam;
Fig. 5 is the work schematic representation of the utility model motor car engine fuel feed pump cam.
Wherein: plunger 1, roller body 2, roller pin 3, roller 4, cam 5.
Embodiment
Below in conjunction with accompanying drawing the mode of execution of the utility model is done further explain.
See Fig. 1 to shown in Figure 5, motor car engine fuel feed pump camshaft comprises the cam 5 and roller 4 of mutual coupling, the wheel rim indent of cam 5, and the surface configuration of the surface configuration of cam 5 wheel rims and roller 4 wheel rims is complementary.
Change the axial rectilinear form of cam 5 wheel rims into camber line, when cam 5 contacts with roller 4, because cam 5 working surfaces are concave surface; Roller 4 is contacted with the minimum point of cam 5 concave surfaces all the time; And be in the central position, it is moving to have limited the roller 4 way roller bodies 2 one side strings that are through on the roller pin 3, can prevent effectively to rub with roller body 2 roller chambeies; Avoid causing wearing and tearing, ensured the permanently effective work of plunger 1.
After adopting the utility model, camshaft is under high rotating speed and high load, but the axial float of operative constraint roller has been avoided the big plane generating plane friction between roller and the roller body, prevents rolling wheel wear.Camshaft can bear bigger load and the rotating speed of Geng Gao on the original basis, has strengthened the reliability that the fuel feed pump is worked under high load, high rotating speed.

Claims (1)

1. motor car engine fuel feed pump camshaft; The cam (5) and the roller (4) that comprise mutual coupling; It is characterized in that: the wheel rim indent of cam (5), and the surface configuration of the surface configuration of cam (5) wheel rim and roller (4) wheel rim is complementary.
CN 201220314985 2012-07-02 2012-07-02 Cam shaft of fuel oil supply pump of motor vehicle engine Expired - Lifetime CN202628343U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220314985 CN202628343U (en) 2012-07-02 2012-07-02 Cam shaft of fuel oil supply pump of motor vehicle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220314985 CN202628343U (en) 2012-07-02 2012-07-02 Cam shaft of fuel oil supply pump of motor vehicle engine

Publications (1)

Publication Number Publication Date
CN202628343U true CN202628343U (en) 2012-12-26

Family

ID=47381550

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220314985 Expired - Lifetime CN202628343U (en) 2012-07-02 2012-07-02 Cam shaft of fuel oil supply pump of motor vehicle engine

Country Status (1)

Country Link
CN (1) CN202628343U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362584A (en) * 2013-03-26 2013-10-23 哈尔滨工程大学 Fuel supercharging double-drum roller driving mechanism
CN105464733A (en) * 2015-12-08 2016-04-06 长春设备工艺研究所 Concave spherical surface arc cam structure for engine cam drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362584A (en) * 2013-03-26 2013-10-23 哈尔滨工程大学 Fuel supercharging double-drum roller driving mechanism
CN105464733A (en) * 2015-12-08 2016-04-06 长春设备工艺研究所 Concave spherical surface arc cam structure for engine cam drive

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GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20121226