Interrelated power delivery controls – including engine control – Transmission control – Engine controlled by transmission
Patent
1997-03-13
1998-06-02
Smith, Creighton
Interrelated power delivery controls, including engine control
Transmission control
Engine controlled by transmission
123419, B60K 4104
Patent
active
057591334
ABSTRACT:
A method and an engine control for suppressing vibration in the drive train of a motor vehicle include detecting a variable being dependent on a speed of an engine, deriving and evaluating a gradient from the variable, reducing a torque of the engine by varying an ignition angle if impermissible vibration is detected, and controlling the torque reduction as a function of an upper and a lower threshold value for the gradient. An ignition intervention is carried out for reducing the engine torque if the gradient is below the lower threshold. The ignition intervention is cancelled if the gradient exceeds the upper threshold value. First lower threshold values are stored in a first performance graph, and second higher threshold values are stored in a second performance graph to which a switchover is made after a first tripping of an anti-bucking function.
REFERENCES:
patent: 4844026 (1989-07-01), Tomisawa
patent: 5027770 (1991-07-01), Yano et al.
patent: 5383434 (1995-01-01), Kugler et al.
Haeuser Andreas
Treinies Stefan
Vogt Thomas
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Smith Creighton
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