Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1991-08-01
1992-08-11
Lazarus, Ira S.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60289, 60290, F01N 322
Patent
active
051368420
ABSTRACT:
A method for heating an exhaust gas catalyst of an internal combustion engine to an operating temperature during a warmup phase includes establishing an enriched mixture as a function of an engine operating state, with a control system. A sensor signal corresponding to a rich or lean mixture is output from a lambda sensor in an exhaust gas system. A quantity of secondary air is blown downstream of outlet valves and upstream of the lambda sensor in the exhaust gas system, from a secondary air pump. A feed quantity of the secondary air pump is pilot-controlled to a stoichiometric exhaust gas ratio, as a function of engine operating parameters, with the control system. The pilot control is corrected with a superimposed closed-loop control in accordance with the sensor signal, starting with operational readiness of the lambda sensor.
REFERENCES:
patent: 3949551 (1976-04-01), Eichler et al.
patent: 4043310 (1977-08-01), Ichimiya et al.
patent: 4231220 (1980-11-01), Takeda
patent: 4363210 (1982-12-01), Kawai et al.
patent: 4364227 (1982-12-01), Yoshida et al.
patent: 4375746 (1983-03-01), Hattori
patent: 4376369 (1983-03-01), Horikoshi et al.
patent: 4383408 (1983-05-01), Ujihashi et al.
patent: 4385491 (1983-05-01), Sakurai et al.
patent: 4593524 (1986-06-01), Matsumoto
patent: 4664081 (1987-05-01), Eheim et al.
patent: 4913122 (1990-04-01), Uchida et al.
patent: 5012421 (1991-04-01), Ishii
patent: 5014670 (1991-05-01), Mitsumoto
Achleitner Erwin
Kapphan Friedrich
Greenberg Laurence A.
Heyman L.
Lazarus Ira S.
Lerner Herbert L.
Siemens Aktiengesellschaft
LandOfFree
Method for heating an exhaust gas catalytic converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for heating an exhaust gas catalytic converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for heating an exhaust gas catalytic converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-339479