HYBRID VEHICLE WITH CYLINDER DEACTIVATION
First Claim
1. A hybrid powertrain controller for a vehicle with at least one electric motor/generator and an internal combustion engine having a plurality of working chambers, the hybrid powertrain controller comprising:
- an engine control unit arranged to operate the engine in a skip fire manner; and
an electric motor/generator control unit arranged to operate the at least one electric motor/generator to add torque to or subtract torque from a powertrain of the vehicle wherein the hybrid powertrain controller is arranged to operate the engine and the at least one electric/motor generator to deliver a desired torque.
1 Assignment
0 Petitions
Accused Products
Abstract
A variety of methods and arrangements for operating an internal combustion engine and one or more motor/generators in a hybrid vehicle are described. In various embodiments, the engine is operated in a skip fire mode. Depending on the state of charge of an energy storage device and/or other factors, the engine is operated to generate more or less than a desired level of torque. The one or more motor/generators are used to add or subtract torque so that the motor/generator(s) and the engine collectively deliver the desired level of torque. In some embodiments, the engine may be run with a substantially open throttle to reduce pumping losses and improve fuel efficiency.
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Citations
8 Claims
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1. A hybrid powertrain controller for a vehicle with at least one electric motor/generator and an internal combustion engine having a plurality of working chambers, the hybrid powertrain controller comprising:
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an engine control unit arranged to operate the engine in a skip fire manner; and an electric motor/generator control unit arranged to operate the at least one electric motor/generator to add torque to or subtract torque from a powertrain of the vehicle wherein the hybrid powertrain controller is arranged to operate the engine and the at least one electric/motor generator to deliver a desired torque. - View Dependent Claims (2, 3, 4)
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5. A method for operating a hybrid powertrain in a vehicle with at least one electric motor/generator and an internal combustion engine having a plurality of working chambers, the method comprising;
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operating the internal combustion engine in a skip fire manner; operating the at least one engine motor/generator to add torque to or to subtract torque from a powertrain of the vehicle; and operating the engine and the at least one electric/motor generator to deliver a desired torque. - View Dependent Claims (6, 7, 8)
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Specification