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Double-overhead camshaft four-valve air distribution mechanism of motorcycle engine

A gas distribution mechanism and engine technology, which is applied to the sealing device of the engine, engine components, machines/engines, etc., can solve the problems of large intake and exhaust valve area, poor ventilation efficiency, and insufficient combustion, etc., to increase power performance , reduce fuel consumption and emissions, reduce the effect of flame propagation time

Inactive Publication Date: 2008-02-27
张文宝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the four-stroke engine commonly produced in China is a gas distribution mechanism driven by two valves and a single cam rocker arm. Disadvantages such as low ratio and insufficient combustion

Method used

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  • Double-overhead camshaft four-valve air distribution mechanism of motorcycle engine
  • Double-overhead camshaft four-valve air distribution mechanism of motorcycle engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In the figure: 1. Cylinder head, 2. Intake valve, 3. Exhaust valve, 4. Valve spring seat, 5. Valve spring, 6. Valve oil seal, 7. Valve spring retainer, 8. Tapered block, 9. Valve lifter adjustment block, 10. Valve lifter, 11. Exhaust camshaft, 12. Intake camshaft, 13. Intake cam retainer, 14. Exhaust cam retainer, 15. Cylinder head cover sealing ring , 16, cylinder head cover, 17, exhaust duct, 18, intake duct, 19, exhaust passage, 20 intake passage.

[0014] As shown in the figure: there is an intake duct 18 and an exhaust duct 17 on the cylinder head 1, there is a movable intake valve 2 in the intake duct 18, and a movable exhaust valve 3 in the exhaust duct 17 , which is characterized in that: the rod ends of the intake valve 2 and the exhaust valve 3 are respectively provided with card slots, and the parts corresponding to the card slots on the rod ends are respectively covered with spring holders 7, and the spring holder 7 and the rod ends A conical clamping block...

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PUM

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Abstract

The present invention relates to gas distributing mechanism of engine, and is especially one kind of four-valve gas distributing mechanism with two top set cams mainly for 125-175 cc displacement engine of motorcycle and motor tricycle. The four-valve gas distributing mechanism includes one gas intake duct with intake valve and one exhaust duct with exhaust valve on the cylinder head. It features the intake valve and the exhaust valve with separate clamping slot in the bar end, the spring holders set in the clamping slots, the conic blocks between the spring holder and the bar end, and the valve springs in holder. The present invention can raise gas exchanging efficiency effectively for complete burning.

Description

technical field [0001] The invention relates to a gas distribution mechanism for an engine, in particular to a double overhead camshaft four-valve gas distribution mechanism for a motorcycle engine. It is mainly used for two-wheel and three-wheel motorcycle engines with a displacement of 125cc to 175cc. Background technique [0002] In the prior art, the four-stroke engine commonly produced in China is a gas distribution mechanism driven by two valves and a single cam rocker arm. Low ratio, insufficient combustion and other shortcomings. Contents of the invention [0003] The object of the present invention is to seek a motorcycle engine double overhead camshaft four-valve gas distribution mechanism to improve the ventilation efficiency and make the combustion more complete. [0004] According to the technical solution provided by the present invention, there are intake ducts and exhaust ducts on the cylinder head, there are movable intake valves in the intake ducts, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L3/10F01L3/08F01L1/20F01L1/06F02F7/00F02F11/00
Inventor 张文宝
Owner 张文宝
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