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U.S. Department of Energy
Office of Scientific and Technical Information

Development of a new combustion system (MCA-JET) in gasoline engine

Conference ·
OSTI ID:6629437
A new combustion system--called MCA-JET--has been developed to improve combustion under the low speed, low load conditions typical of urban driving. Engines with this new system incorporate a special ''jet valve'', in addition to the inlet and exhaust valves of the conventional combustion chamber, which directs air or a super-lean mixture towards the spark plug, and induces a strong swirling flow in the cylinder. This swirl persists during the compression and expansion processes, moves the mixture spirally and helps the flame to propagate. As a result, the combustion of lean mixtures, including those with exhaust gas recirculation, can be carried out rapidly and thus the fuel economy improved.
OSTI ID:
6629437
Report Number(s):
CONF-780208-48
Country of Publication:
United States
Language:
English