Patent ID: 8079214
Filing Date: 2011-12-20
Classification: F01N,F02F

Abstract:
1. An engine in which an exhaust manifold is integrally formed with a cylinder head, the engine comprising: an exhaust manifold in which at least first and second passages are formed, the first passage connected to at least one exhaust port disposed in a first cylinder; and the second passage connected to at least one exhaust port disposed in a second cylinder; wherein the first passage and the second passage join together to communicate with a first single exhaust outlet, and wherein first and second exhaust ports are formed in the first cylinder and third and fourth exhaust ports are formed in the second cylinder that is adjacent to the first cylinder, and wherein the first passage at the first cylinder communicates with the first and second exhaust ports and the second passage at the second cylinder communicates with the third exhaust port; and a third cylinder that is formed adjacent to the second cylinder and that has fifth and sixth exhaust ports, wherein a third passage that communicates with the fourth exhaust port and a fourth passage that communicates with the fifth exhaust port are formed in the exhaust manifold, and the third and fourth passages join together to communicate with a second single exhaust outlet.