Powertrain control system for a vehicle utilizing vehicle acceleration
AssigneeFord Global Technologies, LLC
InventorsMichael John Cullen, Richard John Hippley
Life of this patent
Estimating the term…
Abstract
A method for monitoring an electronically controlled drive unit of a vehicle uses actual vehicle acceleration and a preselected vehicle acceleration. Actual acceleration is determined from any of an acceleration sensor or vehicle speed sensors. When actual acceleration is greater than the preselected acceleration, a reaction is initiated to reduce vehicle acceleration. A method for controlling vehicle acceleration is also disclosed where desired acceleration is determine from either the operator command or a cruise control system.
Claims22
A method for controlling a powertrain of a vehicle, comprising:
- determining a first desired vehicle acceleration based on a driver command;
- determining a second desired vehicle acceleration based on a speed control strategy;
- selecting a maximum of said first desired vehicle acceleration and said second desired vehicle acceleration;
- and
- controlling the powertrain so that an actual vehicle acceleration approaches said selected vehicle acceleration.
A method for controlling a powertrain of a vehicle, comprising:
- determining a first desired vehicle acceleration based on a driver command;
- determining a second desired vehicle acceleration based on a speed control strategy;
- comparing said first desired vehicle acceleration to said second desired vehicle acceleration;
- selecting one of said first desired vehicle acceleration and said second desired vehicle acceleration in response to said comparison;
- determining a first desired powertrain torque in response to said selected vehicle acceleration;
- determining a second desired powertrain torque based on a traction control system;
- selecting a minimum of said first desired powertrain torque and said second desired powertrain torque;
- and
- controlling the powertrain in response to said selected powertrain torque.
A system for a vehicle having an electronically controlled drive unit, the system comprising:
- a first controller that determines a first desired vehicle acceleration based on a driver command, determines a second desired vehicle acceleration based on a speed control strategy, selects one of said first desired vehicle acceleration and said second desired vehicle acceleration, and adjusts a drive unit operating parameter so that an actual vehicle acceleration approaches said selected vehicle acceleration;
- and
- a second controller that determines a preselected acceleration of the vehicle, determines an actual vehicle acceleration based on a sensor coupled to the vehicle, and initiates a reaction when said actual vehicle acceleration is greater than said preselected acceleration.
A method for controlling a powertrain of a vehicle, comprising:
- determining a first desired vehicle acceleration based on a driver pedal position and an actual vehicle speed;
- determining a second desired vehicle acceleration based on a speed control strategy;
- selecting one of said first desired vehicle acceleration and said second desired vehicle acceleration;
- and
- controlling the powertrain so that an actual vehicle acceleration approaches said selected vehicle acceleration.
Dependencies are inferred from the claim text.