Control system for compression ignition internal combustion...

Details Control system for compression ignition internal combustion... Control system for compression ignition internal combustion...

2008-05-06

2008-05-06

Solis, Erick (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

C123S406440

Reexamination Certificate

active

07367311

ABSTRACT:
A compression ignition internal combustion engine includes injectors, each of which injects fuel into a corresponding cylinder. An ECU determines target ignition timing based on engine operational information and adjusts fuel injection start timing and a fuel injection quantity of each injector based on the target ignition timing. The engine further includes an air/fuel ratio sensor, which senses an oxygen concentration of exhaust gas. The ECU corrects the target ignition timing based on the oxygen concentration, which is sensed with the air/fuel ratio sensor, with reference to a predefined relationship between the oxygen concentration and ignition timing for achieving a generally equal constant torque of the engine.

REFERENCES:
patent: 5577476 (1996-11-01), Iyoda
patent: 6325046 (2001-12-01), Kanno
patent: 6481416 (2002-11-01), Palazzi et al.
patent: 2005/0022517 (2005-02-01), Miura

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