System and method for controlling vehicle speed
First Claim
1. A system for controlling the speed of a vehicle having a powertrain including a power plant operably coupled to a transmission, the system comprising:
- a control unit configured to receive a signal indicative of vehicle speed, receive a signal indicative of power plant output speed, determine a desired power plant output speed based on the signal indicative of vehicle speed and the signal indicative of power plant output speed, send a signal to the power plant such that the power plant operates at the desired power plant output speed, and maintain a desired vehicle speed in a manner substantially independent of a magnitude of load on the powertrain.
1 Assignment
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Accused Products
Abstract
A system is provided for controlling the speed of a vehicle having a powertrain including a power plant operably coupled to a transmission. The system includes a control unit configured to receive a signal indicative of vehicle speed, receive a signal indicative of power plant output speed, and determine a desired power plant output speed based on the signal indicative of vehicle speed and the signal indicative of power plant output speed. The control unit is further configured to send a signal to the power plant such that the power plant operates at the desired power plant output speed, and maintain a desired vehicle speed in a manner substantially independent of a magnitude of load on the powertrain.
36 Citations
37 Claims
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1. A system for controlling the speed of a vehicle having a powertrain including a power plant operably coupled to a transmission, the system comprising:
a control unit configured to receive a signal indicative of vehicle speed, receive a signal indicative of power plant output speed, determine a desired power plant output speed based on the signal indicative of vehicle speed and the signal indicative of power plant output speed, send a signal to the power plant such that the power plant operates at the desired power plant output speed, and maintain a desired vehicle speed in a manner substantially independent of a magnitude of load on the powertrain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A vehicle having a powertrain, the vehicle comprising:
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a power plant configured to provide power to the vehicle;
a transmission operably coupled to the power plant, the transmission being configured to transfer the power provided by the power plant to propel the vehicle;
driving members configured to propel the vehicle;
a control unit configured to control operation of the power plant and the transmission, the control unit being configured to receive a signal indicative of vehicle speed, receive a signal indicative of power plant output speed, determine a desired power plant output speed based on the signal indicative of vehicle speed and the signal indicative of power plant output speed, send a signal to the power plant such that the power plant operates at the desired power plant output speed, and maintain a desired vehicle speed in a manner substantially independent of a magnitude of load on the powertrain. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method for controlling the speed of a vehicle having a powertrain including a power plant and a transmission, the method comprising:
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sensing a signal indicative of vehicle speed;
sensing a signal indicative of power plant output speed;
determining a desired power plant output speed based on the signal indicative of vehicle speed and the signal indicative of power plant output speed;
sending a signal to the power plant such that the power plant operates at the desired power plant output speed; and
maintaining a desired vehicle speed in a manner substantially independent of a magnitude of load on the powertrain.
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Specification