Method for operating an internal combustion engine

Details Method for operating an internal combustion engine Method for operating an internal combustion engine

2003-06-24

2008-08-05

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Starting device

Condition responsive control of starting device

C123S179400, C123S179180

Reexamination Certificate

active

07406937

ABSTRACT:
A method for operating an internal combustion engine having at least one triggerable intake valve and at least one triggerable discharge valve, in which the internal combustion engine is directly started in a start-up operating mode and, following the start, is operated in at least one other operating mode. A starting discharge instant of a discharge valve of the internal combustion engine that is used during the start-up operating mode is retarded in time with respect to a standard discharge instant so as to improve the direct start-up characteristics of the internal combustion engine. In addition, to further improve the direct start-up characteristics, it is possible to retard a closing instant of an intake valve that is used during the start-up operating mode with respect to a standard closing instant.

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