Engine overspeed control of retarder

Details Engine overspeed control of retarder Engine overspeed control of retarder

1974-06-12

1976-01-13

Blix, Trygve M.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188181R, 192 4B, 303 21CF, F16D 5702

Patent

active

039318702

ABSTRACT:
A power train having an engine, a retarder and a transmission and controls to manually control the retarder and an engine overspeed responsive control operative to shorten a link in the manual control to move the retarder control valve to automatically apply the retarder in response to engine overspeed. An air cylinder in a link of the retarder apply linkage is actuated by vehicle air brake pressure controlled by a transmission input or engine speed governor to apply the retarder and prevent engine speed above a predetermined value and thus limit vehicle speed. When the retarder apply air cylinder shortens the link, the retarder apply pedal engages the brake off stop to provide the reaction to move the retarder valve.

REFERENCES:
patent: 2946416 (1960-07-01), Snoy
patent: 3423136 (1969-01-01), Lohbauer
patent: 3524523 (1970-08-01), Klimex et al.
patent: 3547231 (1970-12-01), Braun
patent: 3565492 (1971-02-01), Allen et al.
patent: 3814221 (1974-06-01), Fuehrer

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