Cost structure method including fuel economy and engine emission considerations
First Claim
1. Method for calculating an engine power loss term for use in a powertrain power loss minimization control, comprising:
- providing first power loss terms corresponding to engine operating points that attribute power losses to engine operation at the engine operating points relative to an engine operating point that is maximally efficient with respect to a first engine operating metric;
providing second power loss terms corresponding to engine operating points that attribute power losses to engine operation at the engine operating points relative to an engine operating point that is maximally efficient with respect to a second engine operating metric; and
combining the first and second power loss terms at respective engine operating points into an engine power loss term.
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Abstract
A powertrain control selects engine operating points in accordance with power loss minimization controls. Power loss contributions come from a variety of sources including engine power losses. Engine power losses are determined in accordance with engine operating metrics such as power production per unit fuel consumption and power production per unit emission production. Engine power losses are combined in accordance with assigned weighting into a single engine power loss term for use in the power loss minimization control and operating point selection.
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Citations
2 Claims
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1. Method for calculating an engine power loss term for use in a powertrain power loss minimization control, comprising:
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providing first power loss terms corresponding to engine operating points that attribute power losses to engine operation at the engine operating points relative to an engine operating point that is maximally efficient with respect to a first engine operating metric;
providing second power loss terms corresponding to engine operating points that attribute power losses to engine operation at the engine operating points relative to an engine operating point that is maximally efficient with respect to a second engine operating metric; and
combining the first and second power loss terms at respective engine operating points into an engine power loss term.
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2-20. -20. (canceled)
Specification