ELECTRONICALLY CONTROLLED SPEED CHANGE GEAR FOR AUTOMOBILE

PURPOSE:To effectively exhibit the engine brake performance in a low speed range without incurring an engine stall, by providing an engine brake control means for retaining the issuance of an actuating signal to a clutch actuator. CONSTITUTION:An electronic control circuit 32 electronically controls a hydraulic circuit 31 for supplying and discharging hydraulic pressure to and from clutch actuators 30, and is connected thereto with a shift position selecting mechanism 34 which may receives a signal. Further, the control circuit 32 has a vehicle speed lowering rate detecting means 40 which receives the output of a vehicle speed sensor 35, for computing and detecting the lowering rate Ne' of the vehicle, and a vehicle speed lowering rate comparing means 41 comparing the value Ne' with a set vehicle speed lowering value Neo'. Further, there is provided an engine brake control means 43 for controlling a friction clutch 9 in a disengaged condition and for issuing an actuating signal to the clutch actuators 30 such that the clutch engaging condition is held until the value Ne becomes less than the value Neo when the value Ne' is lower than the value Neo'.