Engine power quantization function selection
AssigneeFord Global Technologies, LLC
InventorsFazal Urrahman Syed, Qing Wang
Life of this patent
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Abstract
A vehicle having and engine and traction battery and a method of operating an engine are disclosed. A controller operates the engine according to quantized engine power levels. The quantization level depends upon a total power demand. For low values of total power demand, the selected quantization level may be at least equal to the total power demand. For high values of total power demand, the selected quantization level may be less than or equal to the total power demand. In between low and high values, the selected quantization level may be the quantization level nearest the total power demand. The traction battery may receive or provide power depending on the selected quantization level.
Claims10
A vehicle comprising:
- an engine;
- a traction battery;
- and
- at least one controller programmed to request the engine to operate at a quantized power level that is (i) at least equal to total power demand when total power demand is less than a predetermined value, (ii) less than or equal to total power demand when total power demand is greater than another predetermined value, and (iii) closest in value to total power demand otherwise.
A vehicle comprising:
- an engine;
- a traction battery;
- and
- at least one controller programmed to request the engine to operate at a power level selected from a plurality of quantized power levels as the quantized power level that is closest in value to a total power demand such that the traction battery receives or provides power according to the difference between the total power demand and the power level.
A method for operating an engine comprising:
- outputting power from the engine at least equal to a total power demand when the total power demand is less than a predetermined value;
- outputting power from the engine less than the total power demand when the total power demand is greater than another predetermined value;
- and
- requesting power from the engine at a selected one of a plurality of quantized levels closest in value to the total power demand when the total power demand is greater than the predetermined value and less than the another predetermined value.
Dependencies are inferred from the claim text.