FIELD: engine building.
SUBSTANCE: disclosed are methods and systems for detecting air-fuel ratio imbalances on all cylinders of an engine. In one of the examples, the method (or system) may contain an indication of the cylinder unbalance based on each of the following: air-fuel ratio in exhaust gases, pressure in exhaust header and cylinder torque suspended with confidence coefficient, and confidence coefficient is determined based on operating modes.
EFFECT: disclosed are methods and system for detecting imbalance between engine cylinders.
20 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINING FAULTY FUEL INJECTOR IN ENGINE WITH DISENGAGED CYLINDERS | 2018 |
|
RU2717171C2 |
| METHOD (VERSIONS) FOR AN ENGINE | 2017 |
|
RU2718386C2 |
| METHOD OF DETECTING IMBALANCE OF AIR-FUEL RATIO IN ENGINE CYLINDERS | 2017 |
|
RU2719372C2 |
| METHOD FOR ENGINE (VERSIONS) AND ENGINE SYSTEM | 2013 |
|
RU2639926C2 |
| METHOD FOR FUEL IDENTIFICATION ENGINE BASED ON CRANKSHAFT ACCELERATION (VERSIONS) | 2013 |
|
RU2617645C2 |
| METHOD (VERSIONS) OF VEHICLE ENGINE CONTROL | 2016 |
|
RU2719756C2 |
| METHOD FOR DETERMINING AIR-FUEL RATIO IMBALANCE (EMBODIMENTS) | 2016 |
|
RU2704369C2 |
| NON-INTRUSIVE DIAGNOSTICS OF SENSOR OF AIR FUEL RATIO | 2017 |
|
RU2683285C1 |
| METHOD (EMBODIMENTS) AND SYSTEM FOR IGNITION MISFIRE DETECTION IN ENGINE CYLINDER | 2017 |
|
RU2731742C2 |
| METHOD AND SYSTEM FOR DETECTING DEGRADATION OF OXYGEN SENSOR DUE TO RELEASE OF GAS FROM SEALANT | 2018 |
|
RU2698855C2 |
