Engine autostop and autorestart control

Details Engine autostop and autorestart control Engine autostop and autorestart control

2008-06-09

2009-10-27

Cronin, Stephen K (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

Reexamination Certificate

active

07610143

ABSTRACT:
Systems and methods are described for controlling engine operation of an engine that may be shut-down during engine idle stop conditions. The engine may include a high pressure direct injection fuel system. In one embodiment, a method comprises during at least a first fuel rail temperature below a threshold, automatically stopping engine operation during a selected engine idle stop condition; and during at least a second fuel rail temperature above the threshold, maintaining engine operation during the selected engine idle stop condition.

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