METHOD AND APPARATUS FOR MONITORING REGENERATIVE OPERATION IN A HYBRID POWERTRAIN SYSTEM
First Claim
1. Method for controlling a powertrain system including an engine and a torque actuator coupled to an output member, the output member coupled to a driveline to transfer tractive power to a wheel including a friction brake, the torque actuator operative to react tractive power transferred from the wheel, the method comprising:
- monitoring an operator braking request and determining a request for regenerative braking torque;
monitoring the request for regenerative braking torque;
commanding the torque actuator to react tractive power based upon the monitored request for regenerative braking torque;
monitoring achieved regenerative braking torque; and
inhibiting operation of the torque actuator when a fault is detected in one of the monitored request for regenerative braking torque and the monitored achieved regenerative braking torque.
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Accused Products
Abstract
A hybrid powertrain system includes an engine and a torque actuator coupled to a driveline to transfer tractive power to a wheel including a friction brake. A method includes monitoring an operator braking request and determining a request for regenerative braking torque. Operation of the torque actuator to react tractive power is inhibited when a fault is detected in the monitored request for regenerative braking torque and achieved regenerative braking torque.
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Citations
20 Claims
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1. Method for controlling a powertrain system including an engine and a torque actuator coupled to an output member, the output member coupled to a driveline to transfer tractive power to a wheel including a friction brake, the torque actuator operative to react tractive power transferred from the wheel, the method comprising:
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monitoring an operator braking request and determining a request for regenerative braking torque; monitoring the request for regenerative braking torque; commanding the torque actuator to react tractive power based upon the monitored request for regenerative braking torque; monitoring achieved regenerative braking torque; and inhibiting operation of the torque actuator when a fault is detected in one of the monitored request for regenerative braking torque and the monitored achieved regenerative braking torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Method for controlling a powertrain system including an engine, a transmission and a plurality of torque actuators connected to an energy storage device, the transmission operative to transfer power between the engine and the torque actuators and an output member, the output member coupled to a driveline to transfer tractive power to a wheel including a friction brake, one of the torque actuators operative to react tractive power transferred from the wheel to the driveline to the transmission, the method comprising:
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monitoring an operator braking request; determining a request for regenerative braking torque; monitoring the request for regenerative braking torque; commanding the torque actuator to react tractive power based upon the monitored request for regenerative braking torque; monitoring achieved regenerative braking torque; and inhibiting operation of the torque actuator when a fault is detected in one of the monitored request for regenerative braking torque and the monitored achieved regenerative braking torque. - View Dependent Claims (10, 11, 12, 13, 14)
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15. Method for controlling a powertrain system including a torque actuator operative to transfer tractive power to a wheel including a friction brake and operative to react tractive power transferred from the wheel, the method comprising:
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monitoring an operator braking request and determining a request for regenerative braking torque; monitoring the request for regenerative braking torque; commanding the torque actuator to react the tractive power transferred from the wheel based upon the request for regenerative braking torque; monitoring achieved regenerative braking torque; and inhibiting operation of the torque actuator when a fault is detected in one of the request for regenerative braking torque and the achieved regenerative braking torque. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification