VEHICLE AND METHOD FOR IMPROVING PERFORMANCE AT LOW BATTERY LIMITS
First Claim
1. A method for controlling a vehicle having an engine, a traction motor, and an electrical energy storage device coupled to the traction motor, comprising:
- increasing power output of the engine at a rate that varies in response to available power from the electrical energy storage device when driver demanded power exceeds a corresponding threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
A hybrid electric vehicle (HEV) includes an internal combustion engine, a traction motor, a generator, and a traction battery. Available electric power in the HEV is based upon the available power in the traction battery. The engine and the motor may both work simultaneously to propel the HEV. While the engine is powering the HEV, a controller is configured to increase a power output of the engine based upon a difference between available battery power and a combination of desired motor power and desired generator power.
-
Citations
17 Claims
-
1. A method for controlling a vehicle having an engine, a traction motor, and an electrical energy storage device coupled to the traction motor, comprising:
increasing power output of the engine at a rate that varies in response to available power from the electrical energy storage device when driver demanded power exceeds a corresponding threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
8. A hybrid electric vehicle, comprising:
-
an engine; a generator drivably connected to the engine; an electrical energy storage device coupled to a traction motor and the generator; and a controller configured to increase a power output of the engine at different rates while the engine is running, based upon a difference between available power in the electrical energy storage device and a desired power in the motor and the generator. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A computer system for controlling power distribution of an engine in a hybrid electric vehicle comprising a computer having a central processing unit (CPU) for executing machine instructions and a memory for storing the machine instructions, the machine instructions when executed by the CPU:
-
transmitting power to wheels of the vehicle from both an engine and a traction motor; and increasing power output of the engine at a rate that varies in response to available power from an electrical energy storage device when driver demanded power exceeds a corresponding threshold. - View Dependent Claims (15, 16, 17)
-
Specification