Reciprocating piston engine

Details Reciprocating piston engine Reciprocating piston engine

1999-07-21

2000-08-29

McMahon, Marguerite

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123 4186, F01M 1304

Patent

active

061092517

ABSTRACT:
The invention relates to a reciprocating piston engine having a piston which moves upwardly and downwardly and which rotatably drives a crankshaft and components connected therewith via a connecting rod. The crankshaft is journalled in the crankcase which has a crankcase venting system to compensate pressure in the interior space of the crankcase. The venting system includes a venting line leading away from the interior space of the crankcase. The venting line is configured as a channel in a rotating component in order to achieve a functionally reliable pressure compensation with high separating action. The channel defines a connection between the interior space of the crankcase and the atmosphere. A valve is mounted in this channel and this valve becomes unblocked under the action of centrifugal force and seals the crankcase with respect to fluids when the engine is at standstill.

REFERENCES:
patent: 2738779 (1956-03-01), Christianson et al.
patent: 3834156 (1974-09-01), Cutler et al.
patent: 4969422 (1990-11-01), Ishikawa et al.
patent: 5690084 (1997-11-01), Gunji et al.

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