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Air intake device for engine

A suction device and engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problems of increasing manufacturing costs, achieve the effects of shortening manufacturing time, reducing weight, and improving productivity

Inactive Publication Date: 2007-08-15
KEIHIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to this structure, a curved bypass passage must be formed on the throttle section of the carburetor, and a valve seat of the bypass valve must also be provided. Therefore, complicated processing is required, which inevitably increases the manufacturing cost.

Method used

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  • Air intake device for engine
  • Air intake device for engine
  • Air intake device for engine

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Embodiment Construction

[0042] First, in FIGS. 1 and 2 , the throttle section 1 of the carburetor has an air intake channel 2 extending along the horizontal direction. The inlet of the air intake passage 2 is funnel-shaped, and is connected with an unrepresented air filter, and its outlet is connected with an unrepresented engine air intake. On both sides of the middle part of the throttle section 1 of the carburetor, a pair of bushings 3, 3' are formed, each bushing has shaft holes 4, 4' perpendicular to the axis of the air intake passage 2, and The butterfly throttle valve 5 for opening and closing the suction passage 2 is fixed on the freely rotatable valve shaft 6 supported on the two shaft holes 4 and 4 ′. The throttle valve drum 7 connected to the operating steel wire 9 connected to the throttle valve operating part (not shown in the figure) is fixed on one end of the valve shaft 6, and the throttle valve drum 7 is also connected to the 5-way throttle valve. Return spring 24 applying force in ...

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PUM

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Abstract

An intake device of an engine, wherein a bypass passage (15) formed of a bypass inlet hole (15i) and a bypass outlet hole (15o) opening to the upstream and downstream parts from a throttle valve (5) in an intake passage (2) and a bypass intermediate part (15m) formed in a device block (11) detachably fixed to the installation surface (10a) of a throttle body (1) and having both ends connected to the bypass inlet and outlet holes (15i) and (15o) is formed in the throttle body (1), and a bypass valve (25), an actuator (28), and the output part (8b) of a throttle sensor (8) are installed in the device block (11) to form a bypass valve sensor assembly (43), whereby the bypass valve sensor assembly (43) and the throttle body (1) can be manufactured simultaneously, and the productivity of the intake device of the engine can be increased.

Description

[0001] The present invention is a divisional application of the Chinese invention patent application number 01819872.4 with the application date of PCT / JP01 / 10160 entering China on November 21, 2001, and the title of the invention is "air intake device for engine". technical field [0002] The present invention relates to the air-breathing device of engine, relate in particular to the bypass channel that bypasses throttle valve is connected on the throttle section of carburetor, and the actuator of the bypass valve that switches this bypass channel is connected to this bypass. On the valve, the improved suction device. Background technique [0003] The air intake device of the above-mentioned engine is known, for example, it has been disclosed in US Pat. No. 5,711,271 and Japanese Patent Laid-Open No. Sho 63-136236. [0004] The structure of the engine air intake device disclosed in No. 5,711,271 U.S. Patent Literature is to assemble the valve body of the bypass valve, the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D9/10F02D11/10
Inventor 下川润一秋山裕茂
Owner KEIHIN CORP