JPS6149043U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of the present invention, and FIG. 2 is a circuit diagram showing an embodiment of the configuration shown in FIG. DESCRIPTION OF SYMBOLS 1... Battery, 2... Generator, 3... Regulator, 4... Power supply circuit, 5... Fuel supply control means, 6... Actuator, 7... Abnormality detection circuit, 8... Key switch, 9... Start detection circuit, 9a... Start time limit Setting capacitor, 9b...Capacitor charging control circuit for starting time limit setting, 9c...Starting detection signal output circuit,
DESCRIPTION OF SYMBOLS 10... Stop time setting circuit, 10a... Capacitor for stopping time setting, 10b... Capacitor charging control circuit for stopping time setting, 10c... Stop time signal output circuit, 10d... Stop time signal output blocking circuit, 11... Power supply circuit, 12... Stop command signal generation circuit, 13... Actuator drive circuit, 13a... OR circuit, 13
b...Signal supply switch.

Claims (1)

[Claims for Utility Model Registration] A power supply circuit having a battery and a regulator that adjusts the output voltage of a generator driven by an internal combustion engine, and a fuel supply control means that stops the fuel supply when a fuel supply stop signal is given. a fuel supply control actuator that maintains the fuel supply control means in a fuel supply permissible state when the supply of the fuel supply stop signal is stopped and the supply of fuel to the internal combustion engine is stopped; an abnormality detection circuit that outputs an abnormal signal when an abnormal condition that requires stopping the actuator occurs; and a key switch that is closed during operation of the internal combustion engine; and a key switch that is closed during operation of the internal combustion engine; An internal combustion engine stopping device that provides a starting time limit setting capacitor; a starting time limit setting capacitor charging control circuit that charges the starting time limit setting capacitor with a constant time constant when the internal combustion engine starts; a start detection circuit comprising a start detection signal output circuit that outputs a start detection signal when the terminal voltage of the start time time limit setting capacitor becomes equal to or higher than the start detection reference voltage; a stop time setting capacitor; and the key switch. A stop time setting capacitor charging control circuit charges the stop time setting capacitor with a constant time constant when the capacitor is changed from a closed state to an open state, and a terminal voltage of the stop time setting capacitor is a reference for setting the stop time. a stop time signal output circuit that outputs a stop time signal when the voltage is below the stop time setting capacitor and stops outputting the stop time signal when the terminal voltage of the stop time setting capacitor exceeds the stop time setting reference voltage, and the key switch is closed. a stop time setting circuit comprising a stop time signal output blocking circuit that prevents the stop time signal output circuit from outputting a stop time signal when the stop time signal output circuit is set to the stop time signal output circuit; A power supply circuit that supplies power to the start detection circuit and the stop time setting circuit, and a gate switch that is electrically connected when the start detection signal is generated and maintains the electrically conductive state while the key switch is closed. a stop command signal generation circuit that outputs a stop command signal through the gate switch when the abnormality detection signal is generated while the gate is closed; and an output of the stop command signal generation circuit and an output of the stop time setting circuit as inputs. an OR circuit whose OR condition is satisfied when either the stop command signal or the stop time signal is input; and an OR circuit that is electrically connected when the OR condition of the OR circuit is satisfied to supply the fuel from the battery to the actuator. an actuator drive circuit comprising a signal supply switch that supplies a stop signal; power for driving the abnormality detection circuit and the stop command signal generation circuit is supplied from the battery via the key switch; An internal combustion engine stopping device characterized in that the output of the battery is supplied to the battery through the signal supply switch.