Vehicle and method for operating an engine in a vehicle
First Claim
1. A method for operating an engine in a vehicle, the vehicle including an electric machine operatively connected to the engine and capable of producing torque and controlling a speed of the engine, the method comprising:
- providing an amount of fuel to the engine based at least in part on a desired output of the engine;
commanding the electric machine to control the engine speed based at least in part on the desired engine output;
determining an output error of the engine based at least in part on the command to the electric machine, the engine output error being defined as a difference between the desired engine output and a determined engine output; and
adjusting at least one engine parameter to reduce the engine output error when at least one predetermined condition is met.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for selectively adjusting an amount of fuel to an engine in a vehicle is provided. The vehicle includes an electric machine operatively connected to the engine and capable of controlling a speed of the engine. The method includes providing an amount of fuel to the engine based at least in part on a desired output of the engine, which is based at least in part on a driver input. The electric machine is commanded to control the engine speed based at least in part on the driver input. An output error of the engine is determined based at least in part on the command to the electric machine. The amount of fuel provided to the engine is adjusted when at least one predetermined condition is met, including the output error of the engine being greater than a predetermined amount.
24 Citations
27 Claims
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1. A method for operating an engine in a vehicle, the vehicle including an electric machine operatively connected to the engine and capable of producing torque and controlling a speed of the engine, the method comprising:
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providing an amount of fuel to the engine based at least in part on a desired output of the engine; commanding the electric machine to control the engine speed based at least in part on the desired engine output; determining an output error of the engine based at least in part on the command to the electric machine, the engine output error being defined as a difference between the desired engine output and a determined engine output; and adjusting at least one engine parameter to reduce the engine output error when at least one predetermined condition is met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for operating an engine in a vehicle, the vehicle including an electric machine operatively connected to the engine and capable of producing torque and controlling a speed of the engine, the method comprising:
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determining a desired torque for the engine based at least in part on a driver input; providing an amount of fuel to the engine based at least in part on the desired torque; determining a desired speed for the engine based at least in part on the driver input; commanding the electric machine to control the speed of the engine based at least in part on the desired speed; determining whether at least one predetermined vehicle condition is met; determining a torque for the engine based at least in part on the command to the electric machine; determining an engine torque error defined as a difference between the desired torque and the determined torque; and adjusting the amount of fuel provided to the engine when the engine torque error is greater than a predetermined amount, and when the at least one predetermined condition is met. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A vehicle having an engine and a control system for operating the engine, the vehicle comprising:
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an electric machine operatively connected to the engine and capable of controlling a speed of producing torque and the engine; and at least one controller configured to determine a desired output of the engine, provide an amount of fuel to the engine based at least in part on the desired engine output, command the electric machine to control the engine speed based at least in part on the desired engine output, determine an output error of the engine based at least in part on the command to the electric machine, and adjust at least one engine parameter to reduce the engine output error when at least one predetermined condition is met. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification