BORE BRIDGE AND CYLINDER COOLING

摘要

An internal combustion engine includes a head gasket positioned between a cylinder block and a cylinder head. The cylinder block has first and second cylinders separated by a block bore bridge, and a block cooling jacket with a first passage and a second passage intersecting a block deck face. The cylinder head has first and second chambers separated by a head bore bridge, and a head cooling jacket with a third passage and a fourth passage intersecting a head deck face. The gasket forms a slot positioned adjacent to at least one of the block bore bridge and the head bore bridge to fluidly connect the first and fourth passages to cool the at least one of the block bore bridge and head bore bridge.

主权项

1. An internal combustion engine comprising:
a cylinder block defining a block deck face, first and second cylinders, and a block cooling jacket, wherein the first and second cylinders are adjacent to one another and separated by a block bore bridge; a cylinder head having a head deck face defining first and second chambers, and a head cooling jacket, the first and second chambers adjacent to one another and separated by a head bore bridge, wherein the first chamber and the first cylinder form a first combustion chamber, and the second chamber and the second cylinder form a second combustion chamber; and a head gasket interposed between the cylinder block and the cylinder head, the head gasket having a block side and a head side; wherein the block cooling jacket has a first passage and a second passage intersecting the block deck face on either side of the block bore bridge; wherein the head cooling jacket has a third passage and a fourth passage intersecting the head deck face on either side of the head deck face; and wherein the head gasket forms a slot positioned adjacent to at least one of the block bore bridge and head bore bridge and fluidly connecting the first and fourth passages such that coolant flows from the first passage along at least one of the block deck face and head deck face and to the fourth passage to cool the associated bore bridge.