Two-stroke engine and method for operating the same

Details Two-stroke engine and method for operating the same Two-stroke engine and method for operating the same

2005-02-08

2005-02-08

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

C123S0730SC

Reexamination Certificate

active

06851402

ABSTRACT:
A two-stroke engine (1) for a work apparatus includes a combustion chamber (3) configured in a cylinder (2). The engine includes a piston (5, 21) which drives a crankshaft (7) via a connecting rod (6). The crankshaft (7) is rotatably journalled in a crankcase (4). The two-stroke engine (1) includes at least three transfer channels (10, 11, 20) which connect the combustion chamber (3) to the crankcase (4) at pregiven control times. At pregiven control times, fuel is injected in the region of a transfer channel (10, 11, 20). A first component quantity of the fuel is transfer synchronously injected into the channel and a second component quantity from a preceding injecting cycle exits from the crankcase (4) into the combustion chamber (3). For this purpose, an injection nozzle (19) is mounted in at least one transfer channel (10). The injection nozzle (19) injects fuel into the transfer channel (10) open to the cylinder (2).

REFERENCES:
patent: 3687118 (1972-08-01), Nomura
patent: 3881454 (1975-05-01), Jaulmes
patent: 5503119 (1996-04-01), Glover
patent: 5671703 (1997-09-01), Otome et al.
patent: 5740767 (1998-04-01), Kaku et al.
patent: 5992358 (1999-11-01), Otome
patent: 0 302 045 (1989-02-01), None

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