192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1978-09-22
1980-11-04
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 12C, 192 18A, F16D 6704, B60K 4124
Patent
active
042314550
ABSTRACT:
A vehicle brake system having service brakes and a transmission with internal brakes in the transmission including an output brake and a gear reaction brake system providing friction braking of the transmission output. The transmission has planetary gearing in a housing and a first ratio fluid-operated reaction brake for braking a reaction gear for first ratio drive, and second and third ratio fluid-operated friction devices for establishing second and third ratio drives. The service brake system engages the service brakes and provides an output brake pressure increasing with brake demand to engage the output brake to brake the output shaft in all ratio drives. The first ratio reaction brake and the output brake have a common movable backing plate, so engagement of the output brakes moves the common backing plate in second and third ratio drives to engage the first ratio reaction brake in addition to the engaged second or third ratio drive friction device to provide increasing total internal braking, including friction braking by the output brake and by the gear reaction brake system, increasing with brake demand. At constant brake demand, the total internal output brake power increases with speed in a constant proportion in one arrangement, and in steps at each upshift in another arrangement.
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General Motors Corporation
Heiter A. M.
Krizmanich George H.
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