A Design of Novel Valve Train System for Cylinder Deactivation in SI Engines
International Journal of Mechanical Engineering and Applications
Volume 3, Issue 3-1, June 2015, Pages: 17-21
Received: Jan. 11, 2015;
Accepted: Feb. 8, 2015;
Published: Feb. 14, 2015
Views 3548 Downloads 349
Ly Vinh Dat., Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh city, Viet Nam
Le Nam Anh, Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh city, Viet Nam
Tran Anh Tuan, Faculty of Automotive, Tran Dai Nghia University, Ho Chi Minh City, Viet Nam
Follow on us
Cylinder deactivation is a potential method in improving efficiency and fuel consumption in SI engines. The optimal strategies about driving torque at different operating conditions can improve the fuel consumption in engine. Many recent researches have demonstrated that the cylinder deactivation modes can be successfully applied in improving engine efficiency at different engine loads. Different cylinder deactivation strategies have been applied for full range of engine load. However, deactivating cylinder in engine requires complex structure of valve train system. The study proposes a design valve train, which is improved from the conventional valve train system in an inline SI engine with 4 cylinders, to control for deactivating cylinder. The study results show that the proposed design, which differs to the existing valve train design, can deactivate one or two cylinders modes that depend on part load or medium load in vehicle. In addition, the novel design with simple structure and easy control can fully satisfy the controlling of cylinder deactivation strategies in SI engines.
Cylinder deactivation (CDA), Variable valve timing (VVT), Valve train system, Engine efficiency, Fuel consumption
To cite this article
Ly Vinh Dat.,
Le Nam Anh,
Tran Anh Tuan,
A Design of Novel Valve Train System for Cylinder Deactivation in SI Engines, International Journal of Mechanical Engineering and Applications. Special Issue: Transportation Engineering Technology — Part Ⅱ.
Vol. 3, No. 3-1,
2015, pp. 17-21.
Cylinder Deactivation Reborn, “Cylinder deactivation.” Available at: http://autospeed.com.au/cms/title_Cylinder -Deactivation-Reborn-Part-1/A_2618/article.html
P. Kreuter, et al., (2001), "Meta - CVD, an electro-mechanical cylinder and valve deactivation system," SAE paper No. 2001-01-0240.
R. T. Nate, M.Hammoud, M. Haghoole, T. W. Megli, and W.Dai, (2003), "Optimization techniques and results for the operating modes of a camless engine", SAE paper No. 2003-01-0033
S. P. Vendan, T. Sathish, S. Sathish Kumar, (2009), "Reduction of fuel consumption in multicylinder engine by cylinder deactivation technique," Journal of engineering annals of faculty of engineering, Hunedoara, 15-20
M. Fujiwara, K. Kumagai, M. Segawa, R. Sato and Y. Tamura, (2008), "Development of a 6-cylinder gasoline engine with new variable cylinder management technology", SAE paper No. 2008-01-0610
O. A. Kutlar, H. Arslan, and A. T. Calik, (2005), “Methods to Improve Efficiency of Four Stroke, Spark Ignition Engines at Part Load,” Energy Conversion and Management, vol. 46, no. 20, Dec 2005, pp. 3202–3220.
Yaojung Shiao and Ly Vinh Dat, (2012), “Efficiency Improvement for an Unthrottled SI Engine at Part Load,” International Journal of Automotive Technology, vol. 13, no. 6, pp. 885-893.