| 摘要 |
PURPOSE:To perform the fuel control corresponding to a throttle aperture when the hot wire sensor or the computer equipped on a car has failed. CONSTITUTION:A bypass 26 connecting to an intake pipe 6 astride of a throttle valve 16 is provided on a throttle chamber 4, and the control input of a control circuit 64 is fed to the driving section of a bypass valve 62 of said bypass 26. The bypass valve 62 faces the bypass 26 going around the throttle valve 16, and its opening or closing is controlled by a pulse current. The cross section area of the bypass 26 is changed by means of the lift amount of the bypass valve 62. That is, an opening or closing periodic signal is generated in the control circuit 64 to control the driving system, which feeds the lift amount control signal for the bypass valve 62 to the driving section of the bypass valve 62 in response to this signal. |
