Method and apparatus for eliminating transmission jolt in motor

Details Method and apparatus for eliminating transmission jolt in motor Method and apparatus for eliminating transmission jolt in motor

1978-01-06

1979-10-30

Silverstrim, John P.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Responsive to weight of cargo load transported by vehicle

74752D, 74862, 180178, 192 0076, 192 52, 192 84R, 192103C, B60K 2302

Patent

active

041725050

ABSTRACT:
As a clutch between a motor and a vehicle transmission is progressively engaged through the region of slipping engagement, the jolt effect produced is measured and at the same time the jolt effect that would be produced if the clutch were at once grippingly (fully) engaged is predicted. The higher of the respective measured and predicted jolt effects is subtracted from a signal representing maximum permissible jolt, and the resulting difference is used as the input of a three-term (PID) controller, the output of which produces a displacement of an electrically actuatable clutch control member. The controller and control member are so designed that when the controller is shut off, the clutch goes at once into full engagement. The circuit compares motor speed with transmission input speed in order to shut off the controller when these two speeds are equal, thus fully engaging the clutch, and also to shut off at the same time the jolt-measuring and predicting circuits. These same inputs are also compared to bring the predicting circuits into operation only if these inputs and their first derivatives differ in the same sense, meaning that their speeds are approaching to each other.

REFERENCES:
patent: 3752284 (1973-08-01), Brittain
patent: 3942393 (1976-03-01), Forster

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