Internal-combustion engines – Vibration compensating device
Patent
1995-03-10
1996-07-23
Kamen, Noah P.
Internal-combustion engines
Vibration compensating device
F02B 7506
Patent
active
055379672
ABSTRACT:
A vibration damping control system for an automotive vehicle is provided. This system includes a torque generator operating with given operation timing to produce a torque vibration of a preselected frequency and an operation timing controller. The operation timing controller initially determines a phase difference between engine revolution and frequency of vehicle vibration formed of a resultant vector defined by a first vibration component caused by movement of a crankshaft of the engine and a second vibration component caused by movement of a piston of the engine. The controller then modifies the operation timing of the torque generator to provide the torque vibration in an opposite phase relative to the vehicle vibration based on the phase difference determined to compensate the vehicle vibration.
REFERENCES:
patent: 4922869 (1990-05-01), Kadomukai et al.
patent: 5109815 (1992-05-01), Maeda et al.
patent: 5185543 (1993-02-01), Tebbe
Aota Hiroyuki
Isomura Shigenori
Murakawa Takaji
Tashiro Hiroshi
Yagi Toyoji
Kamen Noah P.
Nippondenso Co. Ltd.
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