Patent ID: 9695775
Date: 2017-07-04
CPC Classifications: F01N,F02F,Y10T

Claim:
1. An internal combustion engine comprising: at least one cylinder head; at least one exhaust pipe having at least one flange, the flange having at least two flange fastening holes having at least two fastening screws for fastening the exhaust pipe to the cylinder head, the exhaust pipe being connectable to the cylinder head by the fastening screws in such a way that the exhaust pipe is dismantleable from the cylinder head; and at least two spacer sleeves, each of the fastening screws extending axially through a corresponding one of the spacer sleeves and a corresponding one of the flange fastening holes, each spacer sleeve including a spacer hole and a centering device in the spacer hole configured for centering the corresponding fastening screw in the spacer hole, wherein the spacer hole of each spacer sleeve defines an inner circumferential surface, each centering device protruding radially inward from the corresponding inner circumferential surface.