Nissan Motor Company Limited

Takashi Ookubo

Yukiyoshi Sasabe

Kiyotaka Ozaki

Tooji Takemura

A torque transmitting assembly comprises a first rotary element including internal cam surfaces, a second rotary element disposed in the first rotary element, the second rotary element including a rotor containing a plurality of radially outwardly opening pressure chambers facing the cam surfaces, and a hydraulic mechanism for transmitting a ratio of the input torque from one of the first rotary element and the second rotary element to the other in response to rotation speed of the second rotary element and also to differential rotation occurring between the first rotary element and the second rotary element. The hydraulic mechanism is rotatable with the second rotary element and includes pistons in the pressure chambers in engagement with the cam surfaces and reciprocable in response to the differential rotation, passages in fluid communication with the pressure chambers through which hydraulic fluid discharged from each of the pressure chambers on the discharge stroke of the associated one of the pistons, and a flow restrictor for restricting flow of the hydraulic fluid discharged from the pressure chambers.

Vehicle speed responsive variable torque transmitting assembly

Transfer unit includes a shift rod which is slidably supported at both ends in a transfer case and is adapted to cooperate with a shift fork to effect changeover between two wheel and four wheel drive conditions. The shift fork is supported by the shift rod so as to be movable in both shift directions and is resiliently retained in position on the shift rod.

Drive condition changeover apparatus for a transfer unit

An operating mechanism of a transfer unit includes a first two wheels four wheels drive shift fork, a second high-neutral-low speed shift fork, first and second shift rods for the first and second forks, one operating lever to shift the two rods, a waiting mechanism resiliently retaining the first shift fork on the shift rod to operate the operating lever when an actual shifting of the shift fork is difficult, and means to prevent second shift rod from moving when the first shift fork is actually in two wheels drive position.

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Yokohama, Japan

Takashi Ookubo