Method for regulating an air-fuel mixture for an...

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant

Reexamination Certificate

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C123S674000, C123S704000, C701S103000, C701S104000

Reexamination Certificate

active

07844388

ABSTRACT:
A method of regulating the actual lambda value for an internal-combustion engine of a motor vehicle in a closed control loop is provided. A lambda setpoint is transferred to a controller for influencing an injection calculation for the internal-combustion engine, and an actual lambda value, which occurs at the output of a controlled system as a function of the injection calculation, is returned to the controller. At least one system parameter of the controlled system is determined, and the determined system parameter is transferred to a Smith predictor added to the controller for compensating the influence of the system dead time on the control loop characteristics.

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patent: 6287453 (2001-09-01), Rosel et al.
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patent: 2003/0065438 (2003-04-01), Katoh
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International Search Report dated Nov. 16, 2006 with an English translation of the pertinent portions (Five (5) pages).
Form PCT/ISA/220 and Form PCT/ISA/237 with an English translation of the pertinent portions (Nine (9) pages).

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