Patent ID: 8091536
Filing Date: 2012-01-10
Classification: C10L,F02B,F02D,F02M,Y02T

Abstract:
1. A method of fuelling an internal combustion engine, the method comprising: introducing a gaseous fuel mixture directly into a combustion chamber of said engine, wherein said gaseous fuel mixture comprises methane; introducing hydrogen into said combustion chamber, thereby adding hydrogen to said gaseous fuel mixture, wherein said hydrogen represents between 5% and 60% by volume of said gaseous fuel mixture at standard temperature and pressure; maintaining a gaseous fuel mixture rail to peak in-cylinder pressure ratio of at least 1.5:1 when introducing the gaseous fuel mixture into said combustion chamber for at least one engine operating condition; the method further comprising premixing said hydrogen with intake air and introducing said hydrogen into said combustion chamber during an intake stroke of said piston.