FIELD: motors and pumps.
SUBSTANCE: invention can be used in control systems of an internal combustion engine. Methods and systems are provided for estimating fuel concentration in engine oil in an engine crankcase. In one example, an engine controller may adjust engine operation such as exhaust gas recirculation (EGR) flow and engine fueling based on the estimated fuel concentration in engine oil. Fuel concentration may be based on an output of an intake oxygen sensor when purge and EGR flow are disabled, engine oil temperature, and fuel composition.
EFFECT: invention allows for more precise control of fuel supply and / or engine EGR flow to achieve better performance.
20 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHODS AND THE SYSTEM OF ENGINE CONTROL | 2015 |
|
RU2670566C2 |
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|
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|
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|
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| FUEL INJECTION METHOD (VERSIONS) | 2013 |
|
RU2609016C2 |
