Emergency brake system for vehicles

Details Emergency brake system for vehicles Emergency brake system for vehicles

1978-07-28

1980-07-08

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Combined with mechanism retarded by brake

123320, F02D 906

Patent

active

042113121

ABSTRACT:
In an emergency brake system for a vehicle having a brake booster to increase braking pressure applied to wheel brake cylinders from a master cylinder, a cut-off valve is provided within an exhaust pipe of an internal combustion engine for the vehicle and operatively connected to a manual shift lever, and a selector valve is disposed within a communication passage connecting a servo-chamber of the brake booster to an upstream of the cut-off valve in such a manner that the servo-chamber is normally communicated to a source of pneumatic pressure in response to operation of the master cylinder. The cut-off valve is normally opened when the shift lever is in a first position and is closed upon shifting the lever to a second position from the first position to create back pressure acting on the engine. The selector valve is switched-over upon shifting the lever to the second position to apply the back pressure from the exhaust pipe into the servo-chamber through the communication passage.

REFERENCES:
patent: 3234923 (1966-02-01), Fleck et al.
patent: 3947073 (1976-03-01), Cattaneo et al.
patent: 4149618 (1979-04-01), Horie

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