JPH0565699B
In an internal combustion engine wherein feedback control of the air-fuel ratio is carried out in accordance with the concentration of a specific composition in the exhaust gas, so that the air-fuel ratio is close to an aimed air-fuel ratio on the lean side with respect to the stoichiometric air-fue...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | In an internal combustion engine wherein feedback control of the air-fuel ratio is carried out in accordance with the concentration of a specific composition in the exhaust gas, so that the air-fuel ratio is close to an aimed air-fuel ratio on the lean side with respect to the stoichiometric air-fuel ratio, the rate of fuel cut-off time for a definite time period is calculated. When the rate of fuel cut-off time is larger than a predetermined value, the air-fuel feedback control is stopped. |
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