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A Comparative Study on Influence of EIVC and LIVC on Fuel Economy of a TGDI Engine Part II: Influences of Intake Event and Intake Valve Closing Timing on the Cylinder Charge Motion
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 08, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The present paper is Part II of an investigation on the influences of the late intake valve closing (LIVC) and the early intake valve closing (EIVC) on the engine fuel consumptions at different loads and speeds. The investigation was conducted with two 1.5L turbo-charged gasoline direct injection (TGDI) engines, one with a low-lift intake cam and the other with a high-lift intake cam. The focus of this paper is the cylinder charge motion. Computational fluid dynamic (CFD) analyses were conducted on the characteristics of the cylinder charge motion for the load points 6 bar-bmep / 2000 rpm, 12 bar-bmep / 3000 rpm, and 19 bar-bmep / 1500 rpm, representing naturally aspirated and boost-mode operations without and with scavenging during the valve overlap. Simulation results indicate that for all three load points, although the engine with LIVC may have a weaker charge motion in the intake stroke than that with EIVC, turbulence intensity for the charge motion in the engine with LIVC becomes greater in the compression stroke than that with EIVC. The higher the load, the greater the difference in turbulence intensities at the end of the compression stroke between the two engines. Simulation results provide an explanation to the observed phenomenon that combustion durations for the engine with LIVC were much shorter than those for the engine with EIVC under the same engine load.
- Xuwei Luo - Jiangling Motors Co., Ltd
- Ho Teng - Jiangling Motors Co., Ltd
- Yuxing Lin - Jiangling Motors Co., Ltd
- Bin Li - Jiangling Motors Co., Ltd
- Xiaochun Zeng - Jiangling Motors Co., Ltd
- Tingjun Hu - Jiangling Motors Co., Ltd
- Xianlong Huang - Jiangling Motors Co., Ltd
- Xiaojun Yuan - Jiangling Motors Co., Ltd
CitationLuo, X., Teng, H., Lin, Y., Li, B. et al., "A Comparative Study on Influence of EIVC and LIVC on Fuel Economy of a TGDI Engine Part II: Influences of Intake Event and Intake Valve Closing Timing on the Cylinder Charge Motion," SAE Technical Paper 2017-01-2246, 2017, https://doi.org/10.4271/2017-01-2246.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Atkinson, J., "Gas Engine”, US patent 367496, 1887.
- Miller, R., “High Expansion, Spark Ignited, Gas Burning, Internal Combustion Engines,” US patent 2773490, 1956.
- Miller, R., “Supercharged Engine,” US patent 2817322, 1957.
- Honda, “The VTEC Engine,” online article available at world.honda.com.
- hakariya, M., Toda, T., and Sakai, M., "The New Toyota Inline 4-Cylinder 2.5L Gasoline Engine," SAE Technical Paper 2017-01-1021, 2017, doi:10.4271/2017-01-1021.
- Seko, K., Hayashi, A. and Nakajima, M., “Achievement of Enhanced Fuel Economy via i-VTEC Intake Valve Closure Delay Mechanism,” Honda R&D Technical Review, Vol.18, no.1, pp.88-93, 2006.
- Cordier, M., Laget, O., Duffour, F., Gautrot, X. et al., "Increasing Modern Spark Ignition Engine Efficiency: A Comprehension Study of High CR and Atkinson Cycle," SAE Technical Paper 2016-01-2172, 2016, doi:10.4271/2016-01-2172.
- Jono, M., Taguchi, M., Shonohara, T., and Narihiro, S., "Development of a New 2.0L I4 Turbocharged Gasoline Direct Injection Engine," SAE Technical Paper 2016-01-1017, 2016, doi:10.4271/2016-01-1017.
- Nakano, K., Wada, Y., Jono, M. and Narihiro, S., “New In-line 4-Cylinder Gasoline Direct Injection Turbocharged Downsizing Engine,” Honda R&D Technical Review, Vol.28, no.1, pp.139-146, 2016.
- Shibata, M., kawamata, M., Komatsu, H., Maeyama, K. et al., "New 1.0L I3 Turbocharged Gasoline Direct Injection Engine," SAE Technical Paper 2017-01-1029, 2017, doi:10.4271/2017-01-1029.
- Autotrend, “Toyota Debuts New Turbo-Four for Auris Hatchback,” online article available at thetruthaboutcars.com.
- Magda, M., “New Lexus 2.0T Turbo Morphs between Otto and Atkinson,” online article available at enginelabs.com.
- Volkswagen, “Volkswagen at the 37th Vienna Motor Symposium,” online article available at volkswagen-media-services.com.
- Gamma Technologies, GT-Power, gtpowerbbs.com.
- Heywood, J.B., Internal Combustion Engine Fundamentals, 1st edition, McGraw-Hill Book Company, 1988.
- Luo, X., Teng, H., Hu, T., Miao, R. et al., "Mitigating Intensities of Super Knocks Encountered in Highly Boosted Gasoline Direct Injection Engines," SAE Technical Paper 2015-01-0084, 2015, doi:10.4271/2015-01-0084.
- Takahashi, D., Nakata, K., Yoshihara, Y., and Omura, T., "Combustion Development to Realize High Thermal Efficiency Engines," SAE Int. J. Engines 9(3):1486-1493, 2016, doi:10.4271/2016-01-0693.
- Takahashi, N., “Downsizing as Evolution of High Thermal Efficiency Gasoline Engine,” Honda R&D Technical Review Vol.27 No.2, pp.12-20, 2015.
- Yamada, T., Takahashi, M., Ikeya, K. and Takegata, N., “Intake Design for Reduction of Duration of Combustion,” Honda R&D Technical Review, Vol.27 No.2, pp.71-79, 2015.
- Wada, Y., Nakano, K., Mochizuki, K., and Hata, R., "Development of a New 1.5L I4 Turbocharged Gasoline Direct Injection Engine," SAE Technical Paper 2016-01-1020, 2016, doi:10.4271/2016-01-1020.
- Watanabe, E. and Fukutani, I., "Knock Reduction of Spark-Ignition Engines by EGR," SAE Technical Paper 860034, 1986, doi:10.4271/860034.
- Kumano, K. and Yamaoka, S., "Analysis of Knocking Suppression Effect of Cooled EGR in Turbo-Charged Gasoline Engine," SAE Technical Paper 2014-01-1217, 2014, doi:10.4271/2014-01-1217.
- Francqueville, L. and Michel, J., "On the Effects of EGR on Spark-Ignited Gasoline Combustion at High Load," SAE Int. J. Engines 7(4):1808-1823, 2014, doi:10.4271/2014-01-2628.
- Takaki, D., Tsuchida, H., Kobara, T., Akagi, M. et al., "Study of an EGR System for Downsizing Turbocharged Gasoline Engine to Improve Fuel Economy," SAE Technical Paper 2014-01-1199, 2014, doi:10.4271/2014-01-1199.
- AVL, “FIRE User Guide,” AVL Advanced Simulation Technologies, 2013.
- Dassault Systèmes, CATiA, 3ds.com/products-services/catia/.
- Ramos, J.I., Internal Combustion Engine Modeling, Hemisphere Publishing Company, N.Y., 1989.
- Mattavi, J. and Amann, C.A. (ed), Combustion Modeling in Reciprocating Engines, Plenum Press, N.Y., 1980.
- Hu, T., Teng, H., Luo, X., Lu, C. et al., "Influence of Fuel Dilution of Crankcase Oil on Ignitability of Oil Particles in a Highly Boosted Gasoline Direct Injection Engine," SAE Technical Paper 2015-01-2811, 2015, doi:10.4271/2015-01-2811.