Patent ID: 8202198
Filing Date: 2012-06-19
Classification: F16D,F16H,Y10T

Abstract:
1. A front wheel drive (FWD) vehicle comprising: a six-speed transmission having three gear sets and five clutches, the five clutches including a two-mode selectable one-way clutch (SOWC) having a driving member and a stationary member, wherein the five clutches can be selectively engaged to connect members of the three gear sets to the stationary member to thereby enable a reverse speed and the six speeds of the transmission, the six speeds including: a first forward speed having an engine braking first gear speed, a manual low speed, a first gear speed other than the engine braking first gear speed and the manual low speed; and five forward high speeds; a source of pressurized fluid; and a valve body assembly (VBA) having an integrated control mechanism operable for controlling the SOWC to thereby select between the two modes of the SOWC, the control mechanism including: wherein the source of pressurized fluid moves the apply piston and actuator linkage in one direction to thereby lock the driving member to the stationary member only during the engine braking first gear speed, the reverse, and the manual low speed; wherein the return spring moves the apply piston and the actuator linkage in another direction to unlock the driving member from the stationary member only during the first gear speed other than the engine braking first gear and manual low speeds, and the five forward high speeds.