| Research on Engine Characteristics Based on Cyclic Mode Variable Displacement Control
|
| Zhaohui Jin 1,2, Dayou Lu 1, Tian You 3, Fangxi Xie 1,2 |
1College of Automotive Engineering , Jilin Unive
2National Key Laboratory of Automotive Chassis Integration and Bionics
3Changchun Vocational Institute of Technology |
|
|
|
|
|
|
|
| ABSTRACT |
|
Aiming at the problem of torque fluctuations and intake pressure fluctuations caused by cycle cylinder deactivation, we introduced a refined control strategy encompassing fixed cycle frequency with fixed deactivation frequency, variable cycle frequency with fixed deactivation frequency, and variable cycle frequency with variable deactivation frequency. The cycle cylinder deactivation rate is determined by controlling the cycle frequency and the cylinder deactivation frequency, which provides a new method for exploring the torque fluctuation of the cycle cylinder deactivation. Furthermore, we introduced an intake compensation method based on the cylinder deactivation compensation coordinate system is proposed. The non-uniformity of the intake air volume of each cylinder of the cycle cylinder deactivation is improved by changing the valve lift. After compensation, the non-uniformity of the intake air volume and the mean indicated pressure of each cylinder are within 2%, and the maximum torque fluctuation is reduced by 52%. It provides a useful reference for enhancing the dynamic smoothness of cylinder deactivation in engines.
|
| Key Words:
Gasoline engine, Variable displacement, Cycle cylinder deactivation, Torque fluctuation, Engine air intake compensation method
|
|
Corresponding Author.
Fangxi Xie , Email. 
Preview 
Full text via DOI 
Download Citation
Print
