Method for suppressing vibrations in the drive train of a motor

Details Method for suppressing vibrations in the drive train of a motor Method for suppressing vibrations in the drive train of a motor

1993-09-27

1995-09-12

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123436, F02P 5145

Patent

active

054489768

ABSTRACT:
A method for suppressing vibration in the drive train of a motor vehicle includes detecting an rpm of a vehicle engine; deriving an rpm gradient from the rpm and evaluating the rpm gradient; and reducing torque of the engine by varying an ignition angle if impermissible vibration is detected, wherein the torque reduction is controlled as a function of an upper and a lower limit value for the rpm gradient. The ignition angle is retarded if the rpm gradient drops below the lower limit value; switching back to an initial performance graph takes place if the rpm gradient exceeds the upper limit value; and the upper and the lower limit values are predetermined as a function of the engine rpm.

REFERENCES:
patent: 4799469 (1989-01-01), Nagano et al.
patent: 4852537 (1989-08-01), Nagano et al.
patent: 4949691 (1990-08-01), Abe et al.
patent: 5069183 (1991-12-01), Nagano et al.

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