Hybrid vehicle and method of controlling a hybrid vehicle with mode selection based on look ahead data
AssigneeGM Global Technology Operations LLC
InventorsVenkata Prasad Atluri, Matias Garibaldi, Chandra S. Namuduri
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Abstract
A method of controlling a hybrid vehicle having a hybrid powertrain with an engine and a motor/generator includes receiving data indicative of anticipated future vehicle operating conditions, and determining via a controller optimal operating parameters for the engine and for the motor/generator based at least partially on the data. A controller then commands a powertrain operating strategy for the engine and the motor/generator based on the determined optimal operating parameters. The data received can be from active onboard sensing systems and from vehicle telematics systems.
Claims18
A method of controlling a hybrid vehicle having a hybrid powertrain with an engine, a motor/generator, and an energy storage device that provides electrical energy to the motor/generator;
- the method comprising:
- receiving data indicative of anticipated future vehicle operating conditions, including an expected acceleration or deceleration event;
- calculating acceleration or deceleration associated with the expected acceleration or deceleration event for a given vehicle speed;
- calculating power demanded for the calculated acceleration or deceleration;
- calculating expected energy losses or expected regenerative power for each one of different functional operating modes of the powertrain for which motor/generator torque and power of the energy storage device would remain within predetermined limits for the power demanded;
- wherein said calculating is based at least partially on the data;
- updating a stored database of energy loss values and regenerative power values with said calculated expected energy losses or expected regenerative power;
- determining via a controller optimal operating parameters for the engine and for the motor/generator based at least partially on the data;
- wherein said determining optimal operating parameters based on the data is based at least partially on the calculated expected energy losses or expected regenerative power in the stored database;
- and
- commanding a powertrain operating strategy for the engine and the motor/generator based on the determined optimal operating parameters.
A method of controlling a hybrid vehicle having a hybrid powertrain with an engine and a motor/generator, and with an energy storage device operatively connected to the motor/generator that provides electrical energy to the motor/generator, wherein the motor/generator is selectively connected to a crankshaft of the engine via a belt drive train;
- the method comprising:
- receiving a first set of data from onboard active sensing systems;
- wherein at least some of said first set of data is indicative of future vehicle operating conditions;
- receiving a second set of data from vehicle telematic systems;
- wherein at least some of said second set of data is indicative of additional future vehicle operating conditions;
- calculating power demanded based at least partially on the first set of data and the second set of data;
- calculating expected energy losses or expected regenerative power for each one of different functional operating modes of the powertrain for which motor/generator torque and power of the energy storage device would remain within predetermined limits for the power demanded;
- and
- commanding via a controller one of the functional operating modes of the engine and of the motor/generator;
- wherein said one of the functional operating modes is a torque boost mode in which the motor/generator provides torque to the crankshaft via the belt drive train and is commanded based at least partially on the first set of data and the second set of data.
A hybrid vehicle comprising:
- a hybrid powertrain with an engine and a motor/generator each operable to provide propulsion power to the vehicle;
- a control system operatively connected to the engine and the motor/generator and configured to control the engine and the motor/generator in different operating modes;
- at least one of a vehicle onboard active sensing system and a vehicle telematics system operable to provide data indicative of future vehicle operating conditions, wherein the control system includes a processor configured to execute a stored algorithm that:
- determines optimal operating parameters for the engine and for the motor/generator based at least partially on the data and further based at least partially on stored reference values of at least one of energy loss or regenerative power associated with each powertrain operating mode for which a predetermined motor torque limit of the motor/generator and a predetermined battery power limit of an energy storage device used to power the motor/generator are satisfied;
- and
- commands a powertrain operating strategy for the engine and the motor/generator based on the determined optimal operating parameters.
Dependencies are inferred from the claim text.