Angular velocity control for hybrid vehicle prime movers
First Claim
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1. A vehicle, comprising:
- a first prime mover;
a second prime mover;
a transmission coupled to absorb power from the first prime mover or the second prime mover;
a power take-off operation selectively operable from the transmission;
a control system operatively connected with the first prime mover, the second prime mover and the transmission for selecting an operating speed for the power take-off operation;
the control system providing first and second available angular acceleration rates for the first and second prime movers as a function of angular velocity of the first and second prime movers for increases in operating speed of the power take-off operation; and
the control system responding to a selection of increased operating speed for the power take-off operation by directing angular acceleration of an operable one of the first and second prime movers at no more than the lesser of the first and second available angular acceleration rates.
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Abstract
An hybrid vehicle control system controls the output from one of two prime movers installed on the vehicle by reference to available angular acceleration rates for the first and second prime movers. When angular acceleration is called for and the prime mover having greater capacity for angular acceleration is active, acceleration is limited to that which would have been available from the lower capacity prime mover. One application of the system is to provide consistent throttle responsiveness, particularly for a power take-off operation vocation installed on the vehicle.
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Citations
13 Claims
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1. A vehicle, comprising:
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a first prime mover; a second prime mover; a transmission coupled to absorb power from the first prime mover or the second prime mover; a power take-off operation selectively operable from the transmission; a control system operatively connected with the first prime mover, the second prime mover and the transmission for selecting an operating speed for the power take-off operation; the control system providing first and second available angular acceleration rates for the first and second prime movers as a function of angular velocity of the first and second prime movers for increases in operating speed of the power take-off operation; and the control system responding to a selection of increased operating speed for the power take-off operation by directing angular acceleration of an operable one of the first and second prime movers at no more than the lesser of the first and second available angular acceleration rates. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for controlling output from at least one of first and second prime movers installed on a motor vehicle, the system comprising:
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a control system providing first and second available angular acceleration rates for the first and second prime movers as a function of angular velocity of the first and second prime movers; the control system selecting a target output from whichever prime mover is active; the control system responding to selection of an increased target output by setting angular acceleration of the active of the first or second prime movers to the lesser available angular acceleration for the first and second prime movers until the increased target output is met. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification