Land vehicles – Wheeled – Running gear
Patent
1991-02-08
1992-08-25
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
36442405, B60G 1126
Patent
active
051412462
ABSTRACT:
A discriminating value approximately corresponding to the amount of a change in mean effective pressure is calculated on the basis of the revolution period of an internal combustion engine, and a cause for the vibration of the vehicle and conditions in driving on a rugged road are indirectly detected from a misfire-originated change in engine torque. The natural frequency of the suspension of the vehicle with the internal combustion engine mounted thereon is adjusted based on the result of the detection, thereby automatically preventing comfortable riding from being deteriorated by a misfire-originated change in torque or by a drive on a rugged road.
REFERENCES:
patent: 4826205 (1989-05-01), Kouda et al.
patent: 4938499 (1990-07-01), Kawabata
Dr. R. Latsch et al, "Experiences with a New Method for Measuring the Engine Roughness", 1979, pp. 305 (1-15).
Japan Electronic Control Systems Co. Ltd.
Rice Kenneth R.
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