Patent ID: 9611802
Date: 2017-04-04
CPC Classifications: F01N,F02F,F02M

Claim:
1. An engine assembly, comprising: a cylinder block having at least one cylinder, wherein the at least one cylinder defines a combustion chamber: at least one cylinder head coupled to the cylinder block; at least one intake port coupled to the at least one cylinder head, wherein the at least one intake port is in fluid communication with the combustion chamber; at least one exhaust port coupled to the at least one cylinder head, wherein the at least one exhaust port is in fluid communication with the combustion chamber; at least one fuel injector coupled to the at least one cylinder head, wherein the at least one fuel injector is configured to inject fuel directly into the combustion chamber; a head cooling extension forming a protrusion in the at least one cylinder head, the head cooling extension including at least one extension wall and defining an extension cooling passageway at least partially enclosed by the at least one extension wall; wherein the extension cooling passageway is at least partly disposed between the at least one exhaust port and the at least one fuel injector in order to create a thermal barrier between the at least one fuel injector and the exhaust port when a coolant flows through the extension cooling passageway; and wherein the at least one cylinder head has an exhaust side and an intake side opposite to the exhaust side, the at least one intake port is coupled to the intake side of the at least one cylinder head, and the at least one exhaust port is coupled to the exhaust side of the at least one cylinder head, and the fuel injection system includes at least one fuel injector coupled to the exhaust side of the at least one cylinder head, and the at least one fuel injector is closer to the exhaust side than to the intake side of the at least one cylinder head.