Driving power source unit for automotive power transmission testing apparatus employing motor.

摘要

A step-up gear unit is adapted for realization of an automotive internal combustion engine simulated driving power supply in use with a motor such as an electric motor, a hydraulic motor, and so forth. The step-up gear unit is connected to at least two motors for selectively outputting driving torque of a sole motor and combined torque of both motors for wider capacity range of capacity of engine to simulate. The gear train of the step-up gear is so composed as to selectively connect and disconnect the motors to and from an output gear (3) for selective output of the driving torque. Independent input shafts (122a,b) carry input gears (121a,b) for meshing with intermediate gears (125a,b) at least one of which is selectively meshable with the corresponding input gear. The intermediate gears (125a,b) are carried by a shaft (126) which also carries a gear (127) meshing with the output gear (131).