| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronically-controlled throttle valve system for actualizing safe retracting travel when an accelerator position sensor or a throttle position sensor is malfunctioned. SOLUTION: The electronically-controlled throttle valve system 20 includes the accelerator position sensor 66 for detecting the operation amount of an accelerator grip 63, an electric motor 67 to be driven depending on the operation amount of the accelerator grip 63, a throttle valve 62 to be opened/closed by the electric motor 67, the throttle position sensor 68 for detecting the actual opening of the throttle valve 62, and an electric control unit 71 for controlling the electric motor 67 to be driven in accordance with output values for sensors 66, 68. When at least one of both sensors 66, 68 is malfunctioned, the electric control unit 71 positions the throttle valve 62 at a limp-home opening after predetermined conditions are established. COPYRIGHT: (C)2010,JPO&INPIT
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