Low-noise level internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsYasuo Matsumoto, Yoshimasa Hayashi
Life of this patent
Estimating the term…
Abstract
An internal combustion engine is provided with a bore for receiving the journal of a crankshaft which bore is defined by a lower section of a cylinder block and a bearing cap secured to the cylinder block. A cylindrical housing provided at its inner surface with a metal sleeve bearing is disposed in the bore so as to rotatably support the crankshaft journal. Additionally, a cylindrical elastic member is securely disposed between the outer surface of the cylindrical housing and the peripheral surface of the bore, thereby absorbing vibration transmitted through a piston to the crankshaft, which vibration is due to pressure generated in engine cylinders.
Claims8
An internal combustion engine having a bore for receiving a crankshaft which bore is defined between opposed semicylindrical surfaces located respectively on a cylinder block and a bearing cap, said engine comprising:
- a cylindrical housing disposed in said bore;
- a metal sleeve bearing extending coaxially through and fixedly retained in said cylindrical housing, said metal sleeve bearing having a journal of said crankshaft rotatably supported therein;
- and
- a cylindrical elastic member disposed between the outer surface of said cylindrical housing and the semicylindrical surfaces of the cylinder block and the bearing cap, thereby absorbing vibration transmitted to the crankshaft.
Dependencies are inferred from the claim text.