Optimization Scheme for gas engines with three-way catalytic converter.

摘要

PCT No. PCT/NL96/00079 Sec. 371 Date Nov. 6, 1997 Sec. 102(e) Date Nov. 6, 1997 PCT Filed Feb. 19, 1996 PCT Pub. No. WO96/25594 PCT Pub. Date Aug. 22, 1996The invention relates to a process for controlling the fuel-air ratio for a gas engine which is provided with one or more lambda (1) sensors and a three-way catalyst, as well as a control system for adjusting the fuel-air ratio by means of a control element on the basis of the signal of a first lambda (1) sensor, comprising stepwise adjusting the lambda (1) value at regulated intervals, at constant load of the engine, and measuring the corresponding activity of the catalyst, determining the corresponding measuring signals of the lambda (1) sensor, and determining the value of the measuring signal at which the activity of the catalyst considerably increases or decreases, followed by adjusting the value of the control signal of the lambda (1) sensor which is maintained as the desired control value on the basis of the latter measuring signal.