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Automobile engine variable valve timing chain wheel

An automotive engine and valve timing technology, applied in engine components, machines/engines, mechanical equipment, etc., can solve the problems of inconvenient installation and maintenance, high processing costs, and achieve safe and reliable use, low processing costs, and strong installation and connection. Effect

Inactive Publication Date: 2013-03-20
江苏双峰粉末冶金制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the processing cost is high, and the installation and maintenance are not convenient enough

Method used

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  • Automobile engine variable valve timing chain wheel
  • Automobile engine variable valve timing chain wheel

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Experimental program
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Embodiment Construction

[0014] Such as figure 1 and figure 2 As shown, the variable valve timing sprocket of an automobile engine, the timing sprocket is composed of a sprocket body 2 and a gear ring part 1 located at the outer circumference of the sprocket body 2, and the sprocket body 2 and the gear ring part 1 Set to the overall structure.

[0015] In this embodiment, the sprocket body 2 is provided with a central hole, and the edge of the central hole is configured as a concave-convex structure. In this embodiment, the edge of the central hole is provided with five bumps 3, and all the bumps 3 are evenly distributed. , and each bump 3 has a through hole 4, the timing sprocket is connected and fixed with the camshaft through the bolt and the through hole 4, so that the connection between the camshaft and the timing sprocket is very firm. Both the sprocket body 2 and the gear ring part 1 of the present invention are processed by powder metallurgy, thus forming an integral structure.

[0016] Th...

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Abstract

The invention relates to an automobile engine variable valve timing chain wheel which is composed of a chain wheel body and a toothed ring part which is arranged on the outer periphery of the chain wheel body. The chain wheel body and the toothed ring part are arranged to be in an integral structure. A central hole is formed in the center of the chain wheel body. More than three protruding blocks are arranged on the hole edge of the central hole. The protruding blocks are distributed evenly. Each protruding block is provided with a through hole. Compared with the prior art, the timing chain wheel is machined in a powder metallurgy mode, the manufactured chain wheel is of an integral structure, and then more than three bolt holes formed in the chain wheel body are fixedly connected with cam shafts, not only is machining easy, strength is high, but also machining cost is low, mounting and connecting are firm, using is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an integral automobile engine variable valve timing sprocket processed by powder metallurgy. Background technique [0002] During the operation of the automobile engine, the connection drive between the crankshaft and the camshaft is completed through the timing system, and the camshaft timing sprocket in the engine plays an important role in power transmission. The timing sprocket is composed of the sprocket body and the gear ring part located on the outer circumference of the sprocket body. At present, the traditional timing sprocket is generally made of carbon steel. Due to its complicated structure and difficult processing, the timing The sprocket is made into a split structure. Therefore, the processing cost is high, and the installation and maintenance are not convenient enough. Contents of the invention [0003] In order to solve the above-mentioned technical probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/348
Inventor 丁峰
Owner 江苏双峰粉末冶金制品有限公司