Throttle initiated, supplemental pre-cooling system for vehicula

Details Throttle initiated, supplemental pre-cooling system for vehicula Throttle initiated, supplemental pre-cooling system for vehicula

1992-11-09

1994-06-21

Oberleitner, Robert J.

Brakes

Elements

Cooling and lubricating

188264F, F16D 65833

Patent

active

053221478

ABSTRACT:
A brake cooling system for applying a pre-cooling bath to the brake packs of a vehicle through a brake coolant valve having an actuating piston chamber. The brake cooling system is responsive not only to the application of operating pressure to the brake pedal but also to release of the throttle. To operate the brake cooling system in response to the throttle setting, the brake cooling system utilizes a cut-off valve having a transfer chamber. A signal feed conduit communicates between the transfer chamber and the actuating piston chamber in the brake coolant valve. A computerized control member provides pressurized control fluid to the actuating chamber of a modulator control valve. The pressure of the control fluid is established in response to the throttle setting. A hydraulic timer is provided to interrupt the entry of the signal pressure into the transfer chamber after a predetermined period of time. The aforesaid cooling system is also cooperatively compatible with a customary brake apply valve that provides coolant to the brake packs in response to actuation of the brake pedal.

REFERENCES:
patent: 2833385 (1958-05-01), Peterson et al.
patent: 3650162 (1972-02-01), Leiswig et al.
patent: 3696893 (1972-10-01), Koivunen
patent: 4753136 (1988-06-01), Hayakawa et al.

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