Vibration damping control apparatus for vehicle
First Claim
1. A vibration damping control system for a vehicle comprising:
- a rotary electric machine connected to an internal combustion engine, said rotary electric machine generating an output to damp vehicle vibrations;
crank angle detecting means for detecting a crank angle of said internal combustion engine;
engine operating condition detecting means for detecting a preselected engine operating condition;
a ROM device storing a phase difference based on a primary frequency component of vehicle vibration and said crank angle, said primary frequency component including a resultant vector defined by a rotational vibration component and a vertical vibration component, said ROM device also storing information relating said phase difference to said engine operating condition detected by said engine operating condition detecting means;
operation mode determining means for determining an operation mode of said rotary electric machine based on said engine operating condition detected by said engine operating condition detecting means and said relationship between said phase difference and said engine operating condition stored in said ROM device to reduce both said rotational vibration component and said vertical vibration component; and
controlling means for controlling said rotary electric machine based on said operation mode determined by said operation mode determining means.
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Accused Products
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.
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Citations
48 Claims
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1. A vibration damping control system for a vehicle comprising:
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a rotary electric machine connected to an internal combustion engine, said rotary electric machine generating an output to damp vehicle vibrations; crank angle detecting means for detecting a crank angle of said internal combustion engine; engine operating condition detecting means for detecting a preselected engine operating condition; a ROM device storing a phase difference based on a primary frequency component of vehicle vibration and said crank angle, said primary frequency component including a resultant vector defined by a rotational vibration component and a vertical vibration component, said ROM device also storing information relating said phase difference to said engine operating condition detected by said engine operating condition detecting means; operation mode determining means for determining an operation mode of said rotary electric machine based on said engine operating condition detected by said engine operating condition detecting means and said relationship between said phase difference and said engine operating condition stored in said ROM device to reduce both said rotational vibration component and said vertical vibration component; and controlling means for controlling said rotary electric machine based on said operation mode determined by said operation mode determining means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A vibration damping control system for a vehicle comprising:
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a rotary electric machine connected to an internal combustion engine, said rotary electric machine generating an output to damp vehicle vibrations; vibration detecting means for detecting a primary frequency component of vehicle vibration including a resultant vector defined by a rotational vibration component and a vertical vibration component; a ROM device storing a plurality of operation modes of said rotary electric machine; and operation mode determining means for determining an operation mode from said operation modes stored in said ROM device based on said primary frequency component detected by said vibration detecting means; and controlling means for controlling said rotary electric machine based on said selected operation mode. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A vibration damping control system for a vehicle comprising:
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vibration producing means, operating with a given operation timing, for generating a vibration of a preselected frequency; phase difference determining means for determining a phase difference based on an engine revolution and a frequency of vehicle vibrations including a first vibration component caused by movement of a rotational member of an engine and a second vibration component caused by movement of a rectilinear member of the engine; and controlling means for controlling the operation timing of said vibration producing means to produce the vibration in a phase defined in a preselected relation to the phase difference determined by said phase difference determining means to compensate the vehicle vibrations. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A vibration damping control system for a vehicle comprising:
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a generator-motor connected an engine of the vehicle for applying a torque to said engine to minimize a vehicle vibration, said generator-motor working in a power generation mode and a motor mode, said generator-motor transforming engine torque into electrical energy in said power generation mode, said generator-motor providing additional torque to said engine in said motor mode; engine revolution detecting means for detecting an engine revolution; phase difference determining means for determining a phase difference between the engine revolution detected by said engine revolution detecting means and a frequency of the vehicle vibration, including a rotational vibration component and a linear vibration component, said vehicle vibration being produced at said engine revolution; operation timing determining means for determining an operation timing with which said generator-motor is switched between the power generation mode and the motor mode to apply a torque variation to said engine, said operation timing being based on the phase difference determined by said phase difference determining means; and controlling means for controlling said generator-motor based on the operation timing determined by said operation timing determining means. - View Dependent Claims (47, 48)
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Specification