Method for controlling power flow within a powertrain system
First Claim
1. A method for controlling a powertrain system including a multi-cylinder engine coupled to an input member of a hybrid transmission device, the hybrid transmission operative to transfer power between the input member and first and second torque machines and an output member, the first and second torque machines connected to an energy storage device, the engine selectively operative in an all-cylinder state and a cylinder deactivation state, the powertrain selectively operative in one of a plurality of charge states, the method comprising:
- monitoring a state of charge of the energy storage device;
determining an effective state of charge based upon the monitored state of charge of the energy storage device and a range of available power from the energy storage device;
determining a preferred output power to the output member; and
concurrently selecting a preferred charge state for operating the powertrain and operating the engine in one of the cylinder deactivation state and the all-cylinder state based upon the effective state of charge and the preferred output power to the output member.
17 Assignments
0 Petitions
Accused Products
Abstract
A method for operating a powertrain system includes monitoring a state of charge of an energy storage device and determining an effective state of charge based upon the monitored state of charge of the energy storage device and a range of available power from the energy storage device. A preferred output power to an output member is determined. A preferred charge state for operating the powertrain is concurrently selected with operating an engine in one of a cylinder deactivation state and an all-cylinder state based upon the effective state of charge and the preferred output power to the output member.
-
Citations
15 Claims
-
1. A method for controlling a powertrain system including a multi-cylinder engine coupled to an input member of a hybrid transmission device, the hybrid transmission operative to transfer power between the input member and first and second torque machines and an output member, the first and second torque machines connected to an energy storage device, the engine selectively operative in an all-cylinder state and a cylinder deactivation state, the powertrain selectively operative in one of a plurality of charge states, the method comprising:
-
monitoring a state of charge of the energy storage device; determining an effective state of charge based upon the monitored state of charge of the energy storage device and a range of available power from the energy storage device; determining a preferred output power to the output member; and concurrently selecting a preferred charge state for operating the powertrain and operating the engine in one of the cylinder deactivation state and the all-cylinder state based upon the effective state of charge and the preferred output power to the output member. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for controlling a powertrain system including a multi-cylinder engine coupled to an input member of a hybrid transmission device, the hybrid transmission operative to transfer power between the input member and first and second electric machines and an output member, the first and second electric machines connected to an electrical energy storage device, the engine selectively operative in one of a plurality of engine states and the powertrain selectively operative in one of a plurality of charge states,
the method comprising: -
monitoring a state of charge of the electrical energy storage device; determining an effective state of charge based upon the monitored state of charge of the electrical energy storage device and a range of available power from the electrical energy storage device; determining a preferred output power to the output member; concurrently selecting a preferred charge state for operating the powertrain and selecting a preferred engine state for operating the engine based upon the effective state of charge and the preferred output power to the output member; and controlling operation of the powertrain based upon the preferred engine state, the preferred charge state, and the preferred output power to the output member. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
Specification