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Fuel pump transmission device

A technology of transmission device and fuel pump, which is applied to fuel injection device, charging system, engine components, etc., can solve the problems of heavy weight and complex gear transmission structure, and achieve the effect of light weight, simple structure and easy processing.

Inactive Publication Date: 2012-10-10
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fuel pump transmission device to solve the technical problems of complex gear transmission structure and heavy weight in the prior art

Method used

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Embodiment Construction

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0021] see Figure 1 to Figure 3 According to the fuel pump transmission device of the present invention, it is characterized in that it comprises: a crankshaft 10; an intermediate gear 20, which is drivingly connected with the crankshaft 10 along the rotation axis of the crankshaft 10, and one end of the intermediate gear 20 is provided with a cam structure 21; a fuel pump push rod 30 , the first end of the fuel pump push rod 30 is in contact with the cam structure 21 , and the second end is in contact with the rocker arm 41 of the fuel pump 40 . The fuel pump is driven by the fuel pump push rod 30, which replaces the original gear transmission structure. The structure is simple, light in weight, easy to process, and low in manufacturing cost. At t...

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PUM

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Abstract

The invention provides a fuel pump transmission device. The fuel pump transmission device comprises a crankshaft, an intermediate gear and a fuel pump push rod. The intermediate gear is in driving connection with the crankshaft along the rotary axis of the crankshaft; and one end of the intermediate gear is provided with a cam structure; and the first end of the fuel pump push rod is propped against the cam structure, and the second end of the fuel pump push rod is propped against a rocker of a fuel pump. The fuel pump push rod is adopted to drive the fuel pump, the original gear transmission structure is replaced, the structure is simple, the weight is light, the processing is convenient, the manufacturing cost is low, and meanwhile, the position of the fuel pump can be deployed according to the needs of an engine structure.

Description

technical field [0001] The invention relates to the field of aviation piston engines, in particular to a fuel pump transmission device. Background technique [0002] In order to ensure the normal operation of the engine, an appropriate amount of fuel needs to enter the engine combustion chamber and mix with fresh air for combustion per unit time. Therefore, aviation piston engines are designed with fuel pumps, and the lubricating oil pumps of aviation piston engines generally use gear transmission. way to drive. The structure is complex and the weight is heavy; the processing technology of the involute gear is complicated, and special tools are required to process the involute tooth shape, and the initial cost is high. Contents of the invention [0003] The purpose of the present invention is to provide a fuel pump transmission device to solve the technical problems of complex gear transmission structure and heavy weight in the prior art. [0004] In order to achieve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/06F02M39/02
Inventor 贺俊张进
Owner CHINA HANGFA SOUTH IND CO LTD