Method and system for closed loop lambda control of a...

Details Method and system for closed loop lambda control of a... Method and system for closed loop lambda control of a...

2011-06-14

2011-06-14

Vo, Hieu T (Department: 3747)

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

C123S527000

Reexamination Certificate

active

07958866

ABSTRACT:
A method and system in accordance with the present invention provides for improved lambda control utility that includes the following: the introduction of an inner control loop to the lambda control based on the pressure of the gaseous fuel downstream of the fuel control valve and upstream of the carburetor relative to the pressure of the air at the inlet of the carburetor, and the introduction of operating point based dynamic parameter scheduling in the lambda feedback control loop. The combination of these enhancements, working together, will allow an engine system to consistently meet the mandated performance requirements via tighter lambda control in the presence of set point changes and load disturbances.

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