METHOD TO DETERMINE CLOSED STATE OF THROTTLE VALVE IN INTERNAL COMBUSTION ENGINE Russian patent published in 2007 - IPC F02D41/00 F02D41/08 

FIELD: mechanical engineering; control systems of internal combustion engines.

SUBSTANCE: according to proposed method of determining closed state of throttle valve, in electronic engine control system including controller and throttle valve position pickup and engine load pickup connected to controller, zero value of voltage is recorded in controller memory corresponding to closed state of throttle valve and, using said controller, voltage is periodically measured at output of throttle valve position pickup and measured current value is compared with zero voltage value and if current value is lower than zero value, current value of voltage of output signal of throttle valve position pickup is stored in controller memory as zero voltage value at output of throttle valve position pickup. Using the controller, voltage at output of load pickup is periodically changed and after determining open state of throttle valve by controller at appearance of current voltage at output of throttle valve position pickup whose value is higher than zero value checking is done to find whether voltage at output of load pickup is adequate to opening of throttle valve and if there is no such change, current value of voltage at out of throttle valve position pickup is stored as zero voltage value.

EFFECT: provision of reliable method of determining closed state of throttle valve in electronic control system of internal combustion engine.

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