Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1991-10-29
1993-04-20
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
123571, F02M 2507
Patent
active
052033104
ABSTRACT:
The process essentially consists of reintroducing into the cylinder, during the phase of intake of the fresh gas, a more or less large part of the waste gas. It is achieved by providing each cylinder (1) with a branch pipe (7) communicating with the cylinder through an auxiliary inlet valve (8) whose opening period corresponds to the intake top dead center, and with the inlet pipe (6). A shutter or a plug (9) allows to control the flow of waste gas recycled at the intake according to the working conditions of the engine. A decrease in the harmful substances and an improvement in the engine efficiency can be obtained at the same time thereby.
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Institut Francais du Pe'trole
Wolfe Willis R.
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