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Motorcycle engine starting pressure reduction structure

A technology for engine starting and motorcycles, applied in engine components, machines/engines, mechanical equipment, etc., can solve problems such as insufficient lightweight, and achieve the effect of reducing the quality of sprockets, reducing the number of assemblies, and working reliably

Pending Publication Date: 2021-02-26
ZHEJIANG QIANJIANG MOTORCYCLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the above-mentioned problems in the existing technology, and propose a motorcycle engine start-up decompression structure, which solves the problem of insufficient light weight in the existing engine start-up decompression structure

Method used

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  • Motorcycle engine starting pressure reduction structure
  • Motorcycle engine starting pressure reduction structure
  • Motorcycle engine starting pressure reduction structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1 to Figure 3 As shown, the motorcycle engine starting decompression structure includes a camshaft 1, a sprocket 2 and a pressure relief valve assembly, the sprocket 2 is provided with a fastener 3 for fixing the sprocket 2 on the camshaft 1, and the camshaft 1 With exhaust cam 13. A mounting hole 23 is opened in the middle of the sprocket 2, a central hole 12 is provided in the camshaft 1 in the axial direction, a pin hole 14 communicating with the central hole 12 is provided in the exhaust cam 13 in the radial direction, and the pressure reducing valve assembly includes Throw block 4, be arranged on the decompression pin 8 in the pin hole 14 and be arranged on the decompression valve rod 6 that is connected with decompression pin 8 in the central hole 12, the side of sprocket 2 facing away from camshaft 1 is the side of sprocket 2 The front side 22, the block 4 is arranged on the front side 22 of the sprocket 2, and one end of the block 4 is hinged wi...

Embodiment 2

[0043] The structure and principle of this embodiment are basically the same as that of Embodiment 1. The difference is that the return elastic member 5 is a tension spring, one end of the tension spring is connected to the free swinging end of the throwing block 4, and the other end of the tension spring is connected to the chain. on wheel 2.

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Abstract

The invention provides a motorcycle engine starting pressure reduction structure, and belongs to the technical field of motorcycles. The problem that an existing engine starting pressure reduction structure is insufficient in light weight is solved. The motorcycle engine starting pressure reduction structure comprises a cam shaft, a chain wheel and a pressure reduction valve assembly, wherein thechain wheel is provided with a fastener and fixedly connected to the cam shaft through the fastener; the pressure reduction valve assembly comprises a throwing block arranged on the side face of the chain wheel; one end of the throwing block is hinged to the chain wheel, and the throwing block can be thrown out in the radial direction of the chain wheel under the action of centrifugal force; the throwing block is connected with a reset elastic piece; the throwing block abuts against the fastener after being reset under the action of the reset elastic piece; a limiting protrusion is arranged onthe edge of the chain wheel; and after the throwing block is thrown out, the hinged end of the throwing block abuts against the limiting protrusion, and then the throwing stroke of the throwing blockis limited. According to the motorcycle engine starting pressure reduction structure, the light weight design of the chain wheel assembly is achieved, and meanwhile the beneficial effect of the compact structure is achieved.

Description

technical field [0001] The invention belongs to the technical field of motorcycles, and relates to a motorcycle engine startup decompression structure. Background technique [0002] Motorcycle is a very common means of transportation. For motorcycles, especially some high-end motorcycles that pursue acceleration performance, lightweight design is a very important indicator. [0003] When the motorcycle engine is started, it needs to inhale new gas for compression, and there will be a large compression resistance near the end of compression. The pressure structure is used to decompress to ensure the smooth start of the engine. [0004] The decompression structure is usually arranged on the camshaft, such as a kind of engine starting automatic decompression mechanism disclosed in Chinese patent literature (application number: 200720188746.5; authorized announcement number: CN201144719Y), including the camshaft, which is provided with a driven chain Wheel and exhaust cam, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/08F01L1/46F01L1/047
CPCF01L1/047F01L1/46F01L13/08
Inventor 郑林张立成潘江伟金潮
Owner ZHEJIANG QIANJIANG MOTORCYCLE
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