Patent ID: 9121370
Filing Date: 2015-09-01
Classification: F01N,F02D,F02M,Y02T

Abstract:
1. A combustion system comprising: a reformer which reforms a fuel on a catalyst so as to increase a combustion energy generated by the fuel per unit quantity of the fuel; and an injection unit which injects a reformed fuel and a non-reformed fuel in such a manner that the reformed fuel is annularly distributed along an inner circumferential wall of a cylinder of an internal combustion engine and the non-reformed fuel is distributed inside of the annularly distributed reformed fuel, wherein: the reformed fuel and the non-reformed fuel are combusted in a combustion chamber of the internal combustion engine at a substantially same time, the non-reformed fuel is compressed self-ignited to be combusted and the reformed fuel is ignited by a combustion of the non-reformed fuel, the reformed fuel is introduced into the combustion chamber through an exhaust outlet or an intake inlet during an intake stroke of the internal combustion engine, the exhaust outlet being opened and closed by an exhaust valve, the intake inlet being opened and closed by an intake valve, one of the exhaust outlet and the intake inlet through which the reformed fuel flows is referred to as a reformed-fuel inlet port; and an engine control unit configured to cause the reformed-fuel inlet port to be opened and closed multiple times during one intake stroke.