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Three air valve motorcycle motor variable air inlet valve air distribution device

A technology for motorcycles and engines, which is applied in the direction of engine components, machines/engines, valve devices, etc., which can solve the problems that engine power, fuel economy and emission characteristics cannot be taken into account at the same time, to achieve improved power, small changes, and layout compact effect

Inactive Publication Date: 2007-04-18
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a variable intake valve gas distribution device for a three-valve motorcycle engine, so as to solve the problem that the gas distribution device of an existing three-valve motorcycle engine cannot take into account the low-speed low-load and high-speed high-load working conditions of the engine at the same time Questions of power performance, fuel economy and emission characteristics under conditions

Method used

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  • Three air valve motorcycle motor variable air inlet valve air distribution device
  • Three air valve motorcycle motor variable air inlet valve air distribution device
  • Three air valve motorcycle motor variable air inlet valve air distribution device

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Embodiment Construction

[0023] As shown in FIG. 10 , the three valves referred to in the present invention refer to an exhaust valve 18 and two intake valves 19 on the engine cylinder head 17 . The present invention is aimed at the improvement of the existing three-valve motorcycle engine gas distribution device, and its specific structure is shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7. Cam 7 and two intake cams, one of the two intake cams is the main intake cam 2, the other is the intake idler 3, the shape of the intake idler 3 is a full circle, and its diameter is equal to the main intake The base circle diameter of cam 2. There are also two intake rocker arms corresponding to the intake rocker shaft 4, among which the main intake rocker arm 5 is in contact with the main intake cam 2, and the secondary intake rocker arm is in contact with the intake idler gear 3 6. Between the primary and secondary intake rocker arms 5 and 6, a clutch mechanism consisting of an active pisto...

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Abstract

An admission device with the variable intake valve of the three-valve motorcycle engine is provided in the invention. The exhaust cam (7), the main inlet cam (2) and the inlet Idler (3) are on the camshaft (1), the line of the inlet Idler (3) is the entire round, its diameter is the same as the base diameter of the main inlet cam (2). The inlet rocker axis (4) has the major and the minor Inlet Rocker (5, 6). The clutch device composed of the initiative piston (10), the spacing spring (11), the switching piston (12), the blocking piston(13), the blocking Spring (14) and the lock sheet is between the major and the minor Inlet Rocker(5,6). According to the engine speed and load condition, the engine can switch between the single-intake valve and double-valve modes automatically. So it can increase the power, economy and emission characteristic in the whole speed and loading condition scope of the motorcycle. The whole structure is simple and contract, it has a small change to the original admission device.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a gas distribution device of a motorcycle engine. Background technique [0002] Traditional small and medium displacement (50ml ~ 250ml) motorcycle engines mostly adopt a single-cylinder four-stroke two-valve structure, and its gas distribution device mainly adopts a compact single overhead camshaft form. In the design and manufacture of the engine, in order to improve the engine's high-speed power, fuel economy and reduce harmful emissions, the use of multi-valve technology is currently an effective technical measure and means. Compared with other multi-valve structures, the three-valve structure is more suitable for the compact space requirements of small and medium-displacement motorcycle engines, and can effectively utilize the characteristics and advantages of multi-valve technology. Therefore, the three-valve structure (two intake valves and one exhaust valve) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/18F01L1/26
Inventor 张力伍东升
Owner CHONGQING UNIV
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