EP 0134466 B1 19881221 - METHOD AND APPARATUS FOR CONTROLLING THE LAMBDA OF THE FUEL MIXTURE FOR A COMBUSTION ENGINE
Title (en)
METHOD AND APPARATUS FOR CONTROLLING THE LAMBDA OF THE FUEL MIXTURE FOR A COMBUSTION ENGINE
Publication
Application
Priority
DE 3327156 A 19830728
Abstract (en)
[origin: US4603670A] A method of and a device for regulating air-fuel ratio of an internal combustion engine includes an oxygen or lambda probe and a signal processing unit connected to the lambda probe. The change-overs of the lambda signal at the output of the lambda probe are compared with a succession of adjustable first time intervals t1 and, when no change-over is detected during the first time interval, the output signal from the signal processing unit which controls the air-fuel ratio is abruptly changed in a jump. To avoid overshoot of the output control signal, there is provided a resetting unit by means of which the jump of the control signal is reversed when the change-over of the lambda signal occurs in an additional monitoring time interval t2 following the first monitoring time interval t1.
IPC 1-7
IPC 8 full level
F02D 41/00 (2006.01); F02D 41/14 (2006.01)
CPC (source: EP US)
F02D 41/1474 (2013.01 - EP US); F02D 41/1456 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 3327156 A1 19850207; DE 3475726 D1 19890126; EP 0134466 A2 19850320; EP 0134466 A3 19860827; EP 0134466 B1 19881221; JP S6043140 A 19850307; US 4603670 A 19860805
DOCDB simple family (application)
DE 3327156 A 19830728; DE 3475726 T 19840703; EP 84107679 A 19840703; JP 14155484 A 19840710; US 62774284 A 19840705