Patent ID: 8978372
Filing Date: 2015-03-17
Classification: F01N,F02B,F02M

Abstract:
1. A V-type engine comprising: two cylinder banks including N, in which N is an integer not less than 2, first cylinders aligned in a direction parallel or substantially parallel to a crank axis direction and N second cylinders aligned in a direction parallel or substantially parallel to the crank axis direction, the two cylinder banks being disposed along V-shaped lines defined by a first plane passing through center lines of the N first cylinders and a second plane passing through center lines of the N second cylinders; N first exhaust ports disposed at an inner side of the V-shaped lines when viewed from the crank axis direction and respectively connected to the N first cylinders; N second exhaust ports disposed at the inner side of the V-shaped lines when viewed from the crank axis direction and respectively connected to the N second cylinders; a first exhaust manifold including N first branch pipes respectively connected to N exhaust ports that include at least one of the first exhaust ports and at least one of the second exhaust ports, and a first collecting pipe, the first exhaust manifold being disposed adjacent to the N first cylinders, the first exhaust manifold extending from one end to another end of the N first cylinders aligned in the direction parallel or substantially parallel to the crank axis direction; and a second exhaust manifold that includes N second branch pipes respectively connected to N exhaust ports that include at least one of the first exhaust ports and at least one of the second exhaust ports, and a second collecting pipe, the second exhaust manifold being disposed adjacent to the N second cylinders, the second exhaust manifold extending from one end to another end of the N second cylinders aligned in the direction parallel or substantially parallel to the crank axis direction.