Regenerative deceleration for a hybrid drive system
AssigneeVisteon Global Technologies, Inc.
InventorsShawn H. Swales, Gurinder S. Kahlon, James J. Klocinski
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Abstract
A control system is provided for the drive system of automotive vehicles. A control determines a combination of torque to be applied from an integrated starter-generator and compression torque to be applied from an engine. The combination of the integrated starter-generator torque and engine compression torque results in a desired deceleration torque. The control preferentially applies torque from the integrated starter-generator over the compression torque, thus maximizing regeneration.
Claims33
A control system for regenerative braking, the control system comprising:
- a control receiving sources of input data, said input data comprising a desired deceleration torque, an integrated starter-generator (“ISG”) torque capacity, and an internal combustion engine compression torque capability;
- said control using said sources of input data to determine an ISG torque to be applied and an engine compression torque to be applied to achieve said desired deceleration torque, said determination preferentially applying said ISG torque;
- and said control transmitting signals based on said determination to said ISG and said engine thereby changing a torque applied by said ISG and changing a compression torque applied by said engine.
A hybrid drive system for an automotive vehicle, the hybrid drive system comprising:
- an internal combustion engine;
- a variable valve timing system (“VVT”) connected with said engine;
- an integrated starter-generator (“ISG”) electrically connected to a battery and an electrical system;
- and
- a control changing both a setting of said VVT and a setting of said ISG.
A method of controlling a hybrid drive system in an automotive vehicle, the method comprising:
- monitoring a torque applied by an integrated starter-generator (“ISG”);
- and
- changing a compression torque of an internal combustion engine in response to said ISG applied torque.
Dependencies are inferred from the claim text.