Vehicle vibration restraining apparatus and method
First Claim
1. A vehicle vibration restraining apparatus for restraining a front-rear vibration of a vehicle comprising a power source that produces a drive force of the vehicle and a continuously variable transmission that transmits the drive force to a vehicle-driving portion and that continuously varies a speed change ratio, the vehicle vibration restraining apparatus comprising:
- a vibration restrainer that controls at least one of the power source and the continuously variable transmission so as to restrain the front-rear vibration of the vehicle;
a vibration period calculator that calculates a specific vibration period of the vehicle in accordance with a state of load on the vehicle; and
a timing determiner that determines a timing of a control output to the at least one of the power source and the continuously variable transmission based on the specific vibration period calculated by the vibration period calculator.
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Accused Products
Abstract
In a vibration restraining apparatus for canceling out front-rear vibrations of a vehicle by controlling the torque of an engine and the speed change ratio of a continuously variable transmission (CVT) from a time point preceding the end of a speed shift by half the period of the vehicle front-rear vibrations, a specific vibration period of the vehicle in accordance with a vehicle-carried load is calculated based on changes in the revolution speed of the engine, and a timing of an control output to the engine or the CVT is determined based on the calculated specific vibration period. Even if the number of occupants or the vehicle-carried load changes, the value of the specific vibration period of the vehicle is corrected in accordance with such a change, so that vehicle vibrations can be properly restrained.
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Citations
30 Claims
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1. A vehicle vibration restraining apparatus for restraining a front-rear vibration of a vehicle comprising a power source that produces a drive force of the vehicle and a continuously variable transmission that transmits the drive force to a vehicle-driving portion and that continuously varies a speed change ratio, the vehicle vibration restraining apparatus comprising:
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a vibration restrainer that controls at least one of the power source and the continuously variable transmission so as to restrain the front-rear vibration of the vehicle;
a vibration period calculator that calculates a specific vibration period of the vehicle in accordance with a state of load on the vehicle; and
a timing determiner that determines a timing of a control output to the at least one of the power source and the continuously variable transmission based on the specific vibration period calculated by the vibration period calculator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle vibration restraining method for restraining a front-rear vibration of a vehicle having a power source that produces a drive force of the vehicle, and a continuously variable transmission that transmits the drive force to a vehicle-driving portion and that continuously varies a speed change ratio comprising:
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calculating a specific vibration period in accordance with a state of load on the vehicle;
determining a timing of a control output to at least one of the power source and the continuously variable transmission based on the specific vibration period; and
controlling the at least one of the power source and the continuously variable transmission at the determined timing so as to restrain the front-rear vibration of the vehicle. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A vehicle vibration restraining apparatus for restraining a front-rear vibration of a vehicle comprising a power source that produces a drive force of the vehicle and a continuously variable transmission that transmits the drive force to a vehicle-driving portion and that continuously varies a speed change ratio, the vehicle vibration restraining apparatus comprising:
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vibration restrain means for controlling at least one of the power source and the continuously variable transmission so as to restrain the front-rear vibration of the vehicle;
vibration period calculator means for calculating a specific vibration period of the vehicle in accordance with a state of load on the vehicle; and
timing determining means for determining a timing of a control output to the at least one of the power source and the continuously variable transmission based on the specific vibration period calculated by the vibration period calculator means. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification