Fluid handling – Speed responsive valve control – Acceleration responsive valve control
Patent
1980-06-04
1981-08-18
Nilson, Robert G.
Fluid handling
Speed responsive valve control
Acceleration responsive valve control
74752C, 137 54, G05D 1366
Patent
active
042840961
ABSTRACT:
A fluid pressure governor adapted to sense the driven speed of an automatic transmission torque output shaft and to develop a speed signal that may be used by an automatic transmission control circuit in conjunction with a torque demand or engine torque signal to control automatic ratio changes in a transmission mechanism as torque is delivered from a vehicle engine to vehicle traction wheels. Provision is made for interrupting the speed signal distribution to the control elements of the transmission mechanism when deceleration of the vehicle exceeds a critical value thus causing the transmission mechanism to downshift to higher torque ratios during rapid deceleration of the vehicle and thereby eliminating any tendency of the vehicle engine to stall or to malfunction as a result of braking of the vehicle.
REFERENCES:
patent: 2630815 (1953-03-01), Worthing
patent: 2711749 (1955-06-01), Hettinger
patent: 2887119 (1959-05-01), Lee
patent: 2889884 (1959-06-01), McFarland
patent: 2911987 (1959-11-01), Wayman
patent: 3032049 (1962-05-01), Schulz
patent: 3043322 (1962-07-01), Schulz
patent: 3523597 (1970-08-01), Lemieux
patent: 3578120 (1971-05-01), Hilpert
Ford Motor Company
Harrington Donald J.
Nilson Robert G.
Zerschling Keith L.
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