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Engine intake control device

A control device and engine technology, applied in engine control, engine components, machines/engines, etc., can solve problems such as poor assembly performance, and achieve the effects of easy manufacturing, improved productivity, and improved reliability

Inactive Publication Date: 2004-06-16
KEIHIN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In conventional engine air intake control devices, the entire bypass valve is formed in the throttle body, and the bypass valve and actuator are mounted on the throttle body at the same time, so the throttle body requires complicated processing. , all parts must be installed on the throttle body itself, which has disadvantages such as poor assembly performance

Method used

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Embodiment Construction

[0049]Hereinafter, the best mode for carrying out the present invention will be described based on the embodiments of the present invention shown in the drawings.

[0050] First, from Figure 1 to Figure 17 The description begins with the first embodiment of the present invention shown.

[0051] exist Figure 1 ~ Figure 3 Among them, the motorcycle 1 is a small motorcycle, and its power unit 4 is arranged directly below the long item box 3 in the front-rear direction, which uses the tandem seat 2 as a cover. The power unit 4 is composed of an engine 5 that makes the cylinder block 6 greatly tilted forward, and a continuously variable transmission 8 that connects the gearbox body 10 extending backward on the crankcase 9 side of the engine 5. The gearbox On the rear end portion of the body 10, the driving wheel, that is, the rear wheel 16 is pivotally supported.

[0052] In the body frame 11 of the motorcycle 1, on the one hand, between the pair of left and right upper frames...

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Abstract

In an intake-air amount control system for an engine, a joint surface (28f) of a control block (28) is coupled to a mounting surface (27f) formed on a throttle body (17) in parallel to an intake passage (17a), and a bypass upstream groove (32i) communicating with an upstream portion of the intake passage (17a) and a bypass downstream groove (32o) communicating with a downstream portion of the intake passage (17a) are defined in at least one of the surfaces (27f, 28f). A valve bore (34) is provided in the control block (28) to permit the communication between the bypass upstream groove (32i) and the bypass downstream groove (32o), and a bypass valve (25) provided in the valve bore (34) and an actuator (28) for the bypass valve (25) are disposed in a device block (11) in parallel to the intake passage (17a). Thus, the workability and the assemblability can be enhanced, while enabling the intake-air amount control system for the engine including the bypass valve and the actuator to be constructed compactly.

Description

technical field [0001] The present invention relates to the improvement of the air intake volume control device of the engine. The improvement is to connect the bypass channel bypassing the throttle valve to the intake channel provided with the throttle valve on the throttle valve body, and drive the switch to the bypass valve. The actuator is connected to the bypass valve that switches the bypass channel. Background technique [0002] Such an engine intake air volume control device is known, for example, disclosed in Japanese Utility Model Publication No. 6-45654. [0003] In conventional engine air intake control devices, the entire bypass valve is formed in the throttle body, and the bypass valve and actuator are mounted on the throttle body at the same time, so the throttle body requires complicated processing. , All components must be installed on the throttle body itself, which has disadvantages such as poor assembly performance. Contents of the invention [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B61/02F02D9/10F02D11/10F02D35/00F02M69/32
CPCF02D11/10F02D9/106F02D9/10F02D9/1065F05C2201/021B62K2202/00F02B61/02F02D35/003
Inventor 秋山裕茂下川润一铃木修上田稔林徹赤松俊二岛田信弘斋藤则夫
Owner KEIHIN CORP
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