192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1978-06-09
1980-11-25
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
188271, 303113, B60K 4120
Patent
active
042353203
ABSTRACT:
A retarder and friction brake system having vehicle service brakes and a shaft brake unit having a hydrodynamic retarder and friction brake. Manual brake controls provide for initial brake apply of the brake unit and then apply of the service brakes or independent apply of the service brakes. The brake unit has a dual chamber, hydrodynamic retarder with opposed bladed stators and a central rotor member having opposed bladed rotors mounted between the stator members for limited axial movement and rotation with a drum fixed to the shaft, and a friction brake having plates located concentrically within the retarder chambers on opposite sides of the rotor and splined to the drum and stators and a brake apply motor. In response to brake demand, the brake controls provide air pressure proportional to brake demand to the brake apply motor and fluid pressure proportional to brake demand and, in a low speed range limited to lower values with decreasing speed, to a brake chamber to provide a release pressure on the brake apply motor and flow through the constant restriction cooling passages in the brake plates to the retarder chambers for retarder braking and pumping through a cooler to provide with increasing speed in the low speed range, decreasing friction braking and increasing retarder braking having a total value proportional to brake demand, and in the higher speed range low friction braking and high retarder braking having a total value proportional to brake demand and increasing in a substantially straight line with increasing speed.
REFERENCES:
patent: 2946416 (1960-07-01), Snoy
patent: 3265162 (1966-08-01), Botterill
patent: 3283859 (1966-11-01), Bertram et al.
patent: 3302755 (1967-02-01), Botterill
patent: 3386540 (1968-06-01), Horsch et al.
patent: 3817585 (1974-06-01), Bowler et al.
patent: 3931870 (1976-01-01), Memmer
patent: 3987874 (1976-10-01), Fuehrer et al.
Fackenthal Harry
Lentz Carl A.
Palmer Walter E.
Polak James C.
Schaefer Robert H.
General Motors Corporation
Heiter A. M.
Krizmanich George H.
LandOfFree
Retarder and friction brakes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retarder and friction brakes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retarder and friction brakes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1125735