Intake air amount control apparatus and intake air amount...

Details Intake air amount control apparatus and intake air amount... Intake air amount control apparatus and intake air amount...

2006-06-27

2006-06-27

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S568140, C123S090160

Reexamination Certificate

active

07066145

ABSTRACT:
If a valve timing adjusting mechanism has a problem, an ECU determines whether or not actual valve timing VTa is larger than valve timing advanced angle limit value VTegr. Depending on the determination, the ECU selects a value for target valve operating angle VLt from safety angles including intermediate valve operating angle VLmid and maximum valve operating angle VLmax. Each of the safety angles VLmid, VLmax is a valve operating angle at which engine combustion is stabilized at the current valve timing. With the valve operating angle fixed at the safety angle VLmid or VLmax, a throttle valve controls intake air amount. This prevents the engine combustion from becoming unstable, thus enabling the engine to be operated in an engine safety mode.

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German Version of German Office Action, 10 2004 040 537.9-13, issued Dec. 5, 2005.
English Translation of German Office Action, 10 2004 040 537.9-13, issued Dec. 5, 2005.

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