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Engine camshaft for gerontic motor tricycle

A technology for three-wheeled motorcycles and engines, applied in engine components, machines/engines, mechanical equipment, etc., can solve the problems of low medium and low speed torque, poor reliability and durability, and high engine temperature

Inactive Publication Date: 2013-03-06
力帆科技(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to copy the old horizontal engine to meet the requirements of the elderly three-wheeled motorcycles. There will be problems such as high engine temperature, low torque at medium and low speeds, high valve noise of the heat engine, high fuel consumption, and poor reliability and durability.

Method used

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  • Engine camshaft for gerontic motor tricycle
  • Engine camshaft for gerontic motor tricycle
  • Engine camshaft for gerontic motor tricycle

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0019] Such as figure 1 , figure 2 As shown, the camshaft of an old three-wheeled motorcycle engine has a shaft body 1 on which an intake cam 2 and an exhaust cam 3 are integrally formed. The center of the intake cam 2 is 0, the line connecting the center 0 of the intake cam 2 and the starting point A of the intake cam profile is on the first straight line L1, and the center 0 of the intake cam and the end point of the intake cam profile The line connecting B is on the second straight line L2, the line connecting the intake cam center 0 and the outermost edge point C of the intake cam flange is on the third straight line L3, and the line between the first straight line L1 and the third straight line L3 The angle between them is a, and 92°≤a≤98°. In this embodiment, a is preferably 95°; the angle between the second straight line L2 and the third straight l...

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Abstract

The invention discloses an engine camshaft for a gerontic motor tricycle. A connecting line of a center O of an air inlet cam (2) and a starting point A of a cam contour is on a first straight line L1; a connecting line of the center O of the air inlet cam (2) and an end point B of the cam contour is on a second straight line L2; a connecting line of the center O of the air inlet cam (2) and the outmost edge point C of a flange of the air inlet cam (2) are on a third straight line L3; an inclined angle a which is more than or equal to 92 DEG and is less than or equal to 98 DEG is formed between the first straight line L1 and the third straight line L3; an inclined angle b which is more than or equal to 86 DEG and is less than or equal to 92 DEG is formed between the second straight line L2 and the third straight line L3; and lift data of an exhaust cam is completely the same as that of the air inlet cam, and only the direction of the exhaust cam is opposite to that of the air inlet cam. In the invention, an inclined angle and a lift curve (the cam contour) of a distribution cam is changed, so that the conventional horizontal type engine can meet the using requirements of large medium-low-speed torque, a low temperature, low oil consumption, low noise, high reliability, high durability and the like of the gerontic motor tricycle.

Description

technical field [0001] The invention relates to a three-wheel motorcycle engine accessory, in particular to a camshaft of an old three-wheel motorcycle engine. Background technique [0002] In order to make things convenient for the elderly to travel, the elderly three-wheeled motorcycles in many areas of my country, especially the northern provinces and cities, are widely used. Existing old age three-wheel motorcycle does not have a special-purpose engine, and what it generally adopts is the two-wheel motorcycle horizontal engine that has been produced for decades. Older three-wheeled motorcycles generally do not have high requirements for speed, but they have high requirements for the performance of the engine at medium and low speeds, and the temperature of the engine itself is required to be low. However, it is difficult to copy the old horizontal engine to meet the requirements of the elderly three-wheeled motorcycles. There will be problems such as high engine tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/047F01L1/08
Inventor 廖寿昌陈微微罗园
Owner 力帆科技(集团)股份有限公司
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