ENGINE WITH THROTTLE DEVICE, AND ENGINE-DRIVEN VEHICLE

摘要

The present invention is provided with a throttle valve (24) provided in an intake passage (31) of an engine. The present invention is provided with a throttle shaft (27) which rotates integrally with a valve element (28) of the throttle valve (24), a spring member which biases the valve element (28) in a closing direction, and a throttle valve driving motor (26) coupled to the throttle shaft (27) via a gear mechanism (25). The present invention is provided with a sensor (42) which detects the rotation angle of a rotation shaft (43) different from the throttle shaft (27) in the gear mechanism (25), and a throttle angle calculation unit which finds a rotation angle (&thetas;2) of the throttle shaft (27) using the detection value of the sensor (42). The throttle angle calculation unit calculates the rotation angle (&thetas;2) of the throttle shaft (27) by subtracting a backlash angle (α) from the detection angle of the sensor (42). The present invention can provide an engine with a throttle device capable of detecting the rotation angle of a throttle shaft with high accuracy while having a configuration in which the rotation angle of a rotation shaft different from the throttle shaft is detected by a sensor.