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Energies 2018, 11(11), 3084;

Estimation of Fuel Economy Improvement in Gasoline Vehicle Using Cylinder Deactivation

Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Department of Mechanical System Engineering, Kumho National Institute of Technology, Gumi 39177, Gyeongbuk, Korea
Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Jangdeok-ri, Namyang-eup, Hwaseong-si 18280, Gyeonggi-do, Korea
Author to whom correspondence should be addressed.
Received: 8 October 2018 / Revised: 5 November 2018 / Accepted: 6 November 2018 / Published: 8 November 2018
(This article belongs to the Section Energy Economics and Policy)
PDF [1897 KB, uploaded 8 November 2018]


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. View Full-Text
Keywords: cylinder deactivation; vehicle modeling; pumping loss; vehicle fuel economy cylinder deactivation; vehicle modeling; pumping loss; vehicle fuel economy

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Lee, N.; Park, J.; Lee, J.; Park, K.; Choi, M.; Kim, W. Estimation of Fuel Economy Improvement in Gasoline Vehicle Using Cylinder Deactivation. Energies 2018, 11, 3084.

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