Process for controlling the intake of a direct-injection four-st

Details Process for controlling the intake of a direct-injection four-st Process for controlling the intake of a direct-injection four-st

1997-10-27

1999-04-20

Argenbright, Tony M.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60278, 123443, 123568, F01N 320, F02M 2507

Patent

active

058947264

ABSTRACT:
The present invention is a process for controlling the intake of a direct fuel injection four-stroke engine in at least two combustion chambers. A diferent intake for at least two cylinders or groups of cylinders is used in order to reduce exhaust emissions. A first cylinder or group of cylinders is operated with an air/fuel ratio greater than or equal to one, and a second cylinder or group of cylinders (21, 24) is operated in under-stoichiometric conditions.

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patent: 5056308 (1991-10-01), Kume et al.
patent: 5247793 (1993-09-01), Yamada et al.
patent: 5661971 (1997-09-01), Waschatz et al.

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