Exhaust gas purifying method of an internal combustion engine
Patent
·
OSTI ID:6189249
An air-fuel ratio discrimination signal, having two voltage levels depending upon whether the air-fuel ratio of the engine is rich or lean in comparison with a predetermined air-fuel ratio, is generated in accordance with the sensed signal from a sensor which detects the concentration of a particular component in the exhaust gas. Then, the amount of secondary air supplied into the exhaust system of the engine is gradually increased or decreased in accordance with the level of the air-fuel ratio discrimination signal. Furthermore, the amount of secondary air supplied into the exhaust system is additionally increased or decreased in accordance with the average value of the air-fuel ratio discrimination signal.
- Assignee:
- Toyota Jidosha Kogyo K K (Japan)
- Patent Number(s):
- US 4375746
- OSTI ID:
- 6189249
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of indicating a basic air-fuel ratio condition of an internal combustion engine
Exhaust gas purification apparatus for an internal combustion engine
Exhaust gas purifying system for internal combustion engines
Patent
·
Mon Nov 08 23:00:00 EST 1982
·
OSTI ID:6465213
Exhaust gas purification apparatus for an internal combustion engine
Patent
·
Mon Nov 26 23:00:00 EST 1979
·
OSTI ID:5485884
Exhaust gas purifying system for internal combustion engines
Patent
·
Tue Aug 12 00:00:00 EDT 1980
·
OSTI ID:6804905