Patent ID: 7574993
Filing Date: 2009-08-18
Classification: F02D,F02P,Y02T

Abstract:
1. A dual fueled spark ignition internal combustion engine, comprising: an engine intake line coupled to at least one combustion chamber; an air intake system in air supplying communication with the engine intake line; a fuel delivery system comprising a first ammonia source and a second combustion promoter source separate from the first ammonia source, the first ammonia source communicable in ammonia supplying communication with the engine intake line and the second combustion promoter source communicable in combustion promoter supplying communication with the engine intake line; and an electronic control module operable in a dual fuel mode to control the flow rate of ammonia and combustion promoter into the engine intake line to achieve substantially stoichiometric combustion of air, ammonia and combustion promoter in the combustion chamber for each cycle of the internal combustion engine; wherein when in the dual fuel mode, the ratio of ammonia to combustion promoter combusted in the combustion chamber increases as the engine load increases.