| US 7,593,807 B2 | ||
| Method for optimizing fuel injection timing in a compression ignition engine | ||
| Gerald T. Fattic, Fishers, Ind. (US) | ||
| Assigned to Delphi Technologies, Inc., Troy, Mich. (US) | ||
| Filed on Jan. 09, 2008, as Appl. No. 12/8,128. | ||
| Prior Publication US 2009/0177368 A1, Jul. 09, 2009 | ||
| Int. Cl. G06F 17/00 (2006.01) | ||
| U.S. Cl. 701—105 [123/491] | 5 Claims |
| 1. A method for optimizing fuel injection timing angle in a compression ignited engine to provide maximum engine torque, comprising
the steps of:
a) determining a reference value for the highest indicated mean effective pressure during the piston power stroke in a cylinder
of said engine at a first fuel injection timing angle;
b) varying the fuel injection timing angle in a successive engine firing;
c) determining a successive value for highest indicated mean effective pressure;
d) comparing said successive value to said reference value to determine if said successive value is greater;
e) repeating steps b through d until said successive value is not greater than an immediately preceding value, wherein said
immediately preceding value is defined as a maximum indicated mean effective pressure; and
f) operating said engine at said fuel injection timing angle that provides said maximum indicated mean effective pressure.
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