Estimation of Fuel Economy Improvement in Gasoline Vehicle Using Cylinder Deactivation

Nankyu Lee, Jinil Park, Jonghwa Lee, Kyoungseok Park, Myoungsik Choi and Wongyu Kim
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Nankyu Lee: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Jinil Park: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Jonghwa Lee: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Kyoungseok Park: Department of Mechanical System Engineering, Kumho National Institute of Technology, Gumi 39177, Gyeongbuk, Korea
Myoungsik Choi: Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Jangdeok-ri, Namyang-eup, Hwaseong-si 18280, Gyeonggi-do, Korea
Wongyu Kim: Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Jangdeok-ri, Namyang-eup, Hwaseong-si 18280, Gyeonggi-do, Korea

Energies, 2018, vol. 11, issue 11, 1-12

Abstract: Cylinder deactivation is a fuel economy improvement technology that has attracted particular attention recently. The currently produced cylinder deactivation engines utilize fixed-type cylinder deactivation in which only a fixed number of cylinders are deactivated. As fixed-type cylinder deactivation has some shortcomings, variable-type cylinder deactivation with no limit on the number of deactivated cylinders is under research. For variable-type cylinder deactivation, control is more complicated and production cost is higher than fixed-type cylinder deactivation. Therefore, it is necessary to select the cylinder deactivation control method considering both advantages and disadvantages of the two control methods. In this study, a fuel economy prediction simulation model was created using the measurement data of various vehicles with engine displacements of 1.0–5.0 L. The fuel economy improvement of fixed-type cylinder deactivation was compared with that of variable-type cylinder deactivation using the created simulation. As a result of examining the fuel economy improvement of the test vehicle in the FTP-75 driving cycle, the improvement was 2.2–10.0% for fixed-type cylinder deactivation and 2.2–12.8% for variable-type cylinder deactivation. Furthermore, the effect of the engine load on fuel economy improvement under cylinder deactivation and the effect of changes in engine control were examined via a simulation.

Keywords: cylinder deactivation; vehicle modeling; pumping loss; vehicle fuel economy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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