| US 7,467,621 B2 | ||
| Engine and method for operating an engine | ||
| John Christian Lauper, Jr., East Peoria, Ill. (US); Martin Leo Willi, Dunlap, Ill. (US); Balamurugesh Thirunavukarasu, Peoria, Ill. (US); and Weidong Gong, Dunlap, Ill. (US) | ||
| Assigned to Caterpillar Inc., Peoria, Ill. (US) | ||
| Filed on Oct. 31, 2006, as Appl. No. 11/589,870. | ||
| Prior Publication US 2008/0098995 A1, May 01, 2008 | ||
| Int. Cl. F02B 43/00 (2006.01) | ||
| U.S. Cl. 123—527 | 29 Claims |
| 1. A method of operating an engine, including:
supplying a combustible combination of reactants to a combustion chamber of the engine, including
supplying a first hydrocarbon fuel to the combustion chamber,
supplying hydrogen fuel to the combustion chamber, and
supplying a second hydrocarbon fuel to the combustion chamber, including supplying at least a portion of the second hydrocarbon
fuel from a fuel system of the engine into an intake system of the engine and through at least a portion of the intake system
into the combustion chamber, the second hydrocarbon fuel supplied to the combustion chamber having an aggregate heat energy
content less than an aggregate heat energy content of the first hydrocarbon fuel supplied to the combustion chamber; and
combusting the combustible combination of reactants in the combustion chamber with the second hydrocarbon fuel acting as an
ignition source for the first hydrocarbon fuel.
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