Cost structure method including fuel economy and engine emission considerations

• US 20070093953A1
• Filed: 10/12/2006
• Published: 04/26/2007
• Est. Priority Date: 05/15/2004
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Heap, Anthony, Cawthorne, William, Hubbard, Gregory
• Granted Patent: US 7,454,278 B2
• Time in Patent Office: Days
• US Class Current: 701/103
• CPC Class Codes: F02D 2200/1006 Engine torque losses, e.g. friction or pumping losses or losses caused by external loads of accessories
• CPC Class Codes: F02D 2250/18 Control of the engine output torque
• CPC Class Codes: F02D 41/1406 with use of a optimisation method, e.g. iteration

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.

Claims

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.

2-20. -20. (canceled)