Patent ID: 6619038
Filing Date: 2003-09-16
Classification: B60K,B60Y,F16D,F16H

Abstract:
An axle driving apparatus comprising:a common housing; a hydraulic pump receiving power from a prime mover, said hydraulic pump being contained in said housing; a hydraulic motor fluidly connected with said hydraulic pump, said hydraulic motor being contained in said housing, wherein at least one of said hydraulic pump and said hydraulic motor is variable in displacement; a capacity changing device for changing the capacity of said at least one of said hydraulic pump and said hydraulic motor; an axle driven by said hydraulic motor, said axle being contained in said housing; a hydraulic actuator contained in said housing for operating said capacity changing device, said hydraulic actuator having a driving part and a fixed part, said fixed part being fixed to said housing, said driving part being operatively connected to said capacity changing device; a control valve contained in said housing for hydraulically controlling said hydraulic actuator and being operatively connected to a traveling control member provided on a vehicle; and a center section formed therein with a closed fluid circuit through which said hydraulic pump and said hydraulic motor are fluidly connected with each other, wherein said control valve is disposed in said center section.