Low-noise-level internal combustion engine
AssigneeHans List
InventorsOthmar Skatsche, Gerhard Thien, Heinz Fachbach
Life of this patent
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Abstract
Low-noise-level internal combustion engine with an engine unit support and a cylinder head mounted thereon, auxiliary units rigidly connected to the engine unit support and the cylinder head, an engine case surrounding the engine unit support and connected to same by at least one resonance absorbing member.
Claims15
A low-noise-level internal combustion engine comprising a crankshaft and crankshaft main bearings which are engine parts directly affected by body resonance and sound vibration, an engine unit support which supports said crankshaft main bearings, a cylinder head mounted on said engine unit support, auxiliary units rigidly connected to the engine unit support and to the cylinder head, and further comprising a crankcase and a flywheel case connected with the crankcase, and at least one resonance-absorbing member located above the crankshaft between said engine parts which are directly affected by sound vibration and said crankcase and flywheel case.
A low-noise-level internal combustion engine which comprises
- a crankshaft;
- a cylinder block;
- means in the form of main bearings supporting said crankshaft on and below said cylinder block;
- a cylinder head mounted on and above said cylinder block;
- auxiliary engine means connected to said cylinder head;
- a crankcase mounted to encompase said crankshaft;
- a flywheel case connected to said crankcase to form a composite casing;
- said composite casing connected to said cylinder block by means of at least one resonance-absorbing member at a point above the level of the crankshaft so as to reduce the transfer of mechanical resonance and sound vibration from the cylinder block to the crankcase and the flywheel case.
Dependencies are inferred from the claim text.