Two-cycle combustion engine

Details Two-cycle combustion engine Two-cycle combustion engine

2007-11-13

2007-11-13

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Two-cycle

Rear compression

C123S0730SC, C123S0730AE

Reexamination Certificate

active

11605595

ABSTRACT:
To provide a two cycle combustion engine provided with scavenging passages of a structure, which is effective to minimize a deposit of fuel contained in an air/fuel mixture and allows the mixture to be injected into a combustion chamber so as to avoid the blow-off of the air/fuel mixture, the engine includes a cylinder block1having a cylinder bore1a, a scavenging-passage-defining wall member34made separate from the cylinder block1and fitted to the cylinder block1. A scavenge regulating segment37, 38secured to the scavenging-passage-defining wall member34is spaced from an outer diametric surface24C,27C of the scavenging passage24, 27and two side surfaces24A,24B or27A,27B of the scavenging passage24, 27that are opposed to each other in a direction circumferentially of the cylinder bore1aand occupies a circumferential center portion of the scavenging passage24, 27.

REFERENCES:
patent: 2003/0226526 (2003-12-01), Rosskamp et al.
patent: 2004/0237914 (2004-12-01), Watkins et al.
patent: 58-43616 UY (1993-10-01), None
patent: 2000-170538 (2000-06-01), None

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