Two stroke internal combustion engine

Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports

Reexamination Certificate

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Reexamination Certificate

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06874453

ABSTRACT:
A two stroke internal combustion engine having a compressed air inlet port and an exhaust port the flow through which is controlled by suitable valves. Fuel is injected through a fuel injector. The timing of the opening of the valve is such that, as the piston approaches top dead centre and with the air inlet valve closed, the exhaust valve is closed such that some exhaust gas is trapped and compressed in the combustion chamber thereby increasing the temperature within the combustion chamber and hence facilitating ignition. The invention also contemplates initiating combustion before the air inlet valve is closed.

REFERENCES:
patent: 4300486 (1981-11-01), Lowther
patent: 4905646 (1990-03-01), Tanahashi
patent: 4995348 (1991-02-01), Melchior
patent: 5020487 (1991-06-01), Krueger
patent: 5063886 (1991-11-01), Kanamaru et al.
patent: 5195486 (1993-03-01), Ishii
patent: 5271362 (1993-12-01), Nakamura et al.
patent: 0 384 492 (1990-08-01), None
patent: 1120248 (1965-08-01), None
patent: 2 202 582 (1988-09-01), None
patent: 10-103076 (1998-04-01), None
patent: 8702043 (1986-11-01), None

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