Fast idle air amount control system in side stand-equipped two-wheeled motor vehicle

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Quick Facts

Patent No.: US 7,814,885
App. No.: 11/919,673
Granted: Oct 19, 2010
Kind: B2

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Abstract

A fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle is provided in which a bypass control valve ( 10 ) is arranged so that an axis (Y) of the bypass control valve ( 10 ) is substantially horizontal along the lateral direction of a two-wheeled motor vehicle (M) when the two-wheeled motor vehicle (M) is in an upright state and slopes downward toward a side stand ( 41 ) side when the two-wheeled motor vehicle (M) is put in an inclined parked state by standing it on the side stand ( 41 ), and an actuator ( 25 ), which is electrically operated, is coupled to an end part of the bypass control valve ( 10 ) on a side opposite to the side stand ( 41 ). This enables a fast idle air amount control system in a two-wheeled motor vehicle to be provided in which the actuator is formed as an electrically operated type and it is possible to easily prevent water droplets generated in a bypass from entering the electrically operated actuator even when the two-wheeled motor vehicle is put in an inclined parked state by standing it on the side stand.

Claims (28)

1. A fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle, in which a bypass control valve ( 10 ) for controlling the amount of fast idle air supplied to an engine (E) mounted on a vehicle body is connected to a throttle body ( 1 1 ) of the engine (E), and an actuator ( 25 ) for operating the bypass control valve ( 10 ) is coupled to the bypass control valve ( 10 ),

characterized in that the bypass control valve ( 10 ) is arranged so that an axis (Y) of the bypass control valve ( 10 ) is substantially horizontal along the lateral direction of a two-wheeled motor vehicle (M) when the two-wheeled motor vehicle (M) is in an upright state and slopes downward toward a side stand ( 41 ) side when the two-wheeled motor vehicle (M) is put in an inclined parked state by standing the two-wheeled motor vehicle (M) on the side stand ( 41 ), and the actuator ( 25 ), which is electrically operated, is coupled to an end part of the bypass control valve ( 10 ) on a side opposite to the side stand ( 41 ).

2. The fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle according to claim 1 ,

wherein the bypass control valve ( 10 ) and the electrically operated actuator ( 25 ) are mounted on the throttle body ( 1 1 ).

3. The fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle according to claim 2 ,

wherein the bypass control valve ( 10 ) is disposed so that the axis (Y) thereof is parallel to an axis (B) of a valve shaft ( 4 1 ) of a throttle valve ( 5 1 ) supported on the throttle body ( 1 1 ).

4. The fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle according to claim 2 ,

wherein the bypass control valve ( 10 ) is formed from a valve chamber ( 18 ) formed in a control block ( 15 ) joined to one side face of the throttle body ( 1 1 ) and a valve body ( 26 ) housed within the valve chamber ( 18 ).

5. The fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle according to claim 1 ,

wherein the bypass control valve ( 10 ) and the electrically operated actuator ( 25 ) are disposed between the throttle body ( 1 1 ) and a cylinder head ( 40 ) of the engine (E) on which the throttle body ( 1 1 ) is mounted.

6. The fast idle air amount control system in a side stand-equipped two-wheeled motor vehicle according to claim 1 ,