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Effects of Intake Valve Closing Timing on Gasoline Engine Performance and Emissions
Technical Paper
2001-01-3564
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents a study of the influence of intake valve closing (IVC) timing on the performance of the high-speed spark ignition (SI) engine, such as the output of torque and power, fuel consumption and emissions. An electrically controlled Variable Valve Timing (VVT) system based on the variable working position belt extender was developed and its pro-type was successfully set up in a 5-valve, double overhead cam (DOHC) SI engine. Test results showed that the IVC timing plays an important role in increasing the power output, decreasing the fuel consumption and CO and HC emissions under both high- and low-speed conditions as compared to the fixed IVC timing. The control of intake valve closing timing is a simple and effective means to improve engine's performance.
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Citation
Li, L., Tao, J., Wang, Y., Su, Y. et al., "Effects of Intake Valve Closing Timing on Gasoline Engine Performance and Emissions," SAE Technical Paper 2001-01-3564, 2001, https://doi.org/10.4271/2001-01-3564.Also In
References
- Dresner T. Barkan P. A review of variable valve timing benefits and modes of operation SAE Paper 891676
- Stone R. Kwan E. Variable Valve Actuation SAE Paper 89063
- Dresner T. Barkan P. A review and classification of variable valve timing mechanisms SAE Paper 890674
- Grohn M. Wolf K. Variable Valve Timing in the new Mercedes-Benz Four-Valve Engines SAE Paper 891990
- Kreyuter P. Heuser P. Schebitz Michael Strategies to Improve Si-Engine Performance By Means of Variable Intake Lift, Timing and Duration SAE Paper 920449
- Asmus T.W. Perspectives on Applications of Variable Valve Timing SAE Paper 910445
- Nuccio P. A Review of variable valve actuations and their effects on S.I. Engine Performance SAE Paper 92A211
- Kreyuter P. Heuser P. Schebitz M. Strategies To Improve Si-Engine Performance By Means of Variable Intake Lift, Timing and Duration SAE Paper 920449
- Hatano K. Lida K. Higashi H. Murata S. Development of a New Multi-Mode Variable Valve Timing Engine SAE Paper 930878
- Natsuki M. Nakano K. Amemiya T. Tanabe Y. Shimizu D. Ohmura I. Development of a Lean Burn Engine with a Variable Valve Timing Mechanism SAE Paper 960583
- Wang Wenhui Li Jianhong “Study on Variable Valve Timing Mechanism” Chinese Internal Combustion Engine Engineering 1 1996
- Schechter M. M. Levin M. B. Camless Engine SAE Paper 960581
- Hannibal W. Bertsch A. VAST: A New Variable Valve Timing System for Vehicle Engines SAE Paper 980769
- Noguchi T. Suematsu T. New 3.0-liter, V6 Engine with Variable Valve Timing System SAE Paper 988001
- Chang Wenxiu Li Liguang Tao Jianwu Xiao Min Zeng Zhaoyang Design and Application of Fuzzy Control System of Engine Variable Valve Timing Proceeding of IEEE International Vehicle Electronics Conference Sept. 6-9 1999 Changchun, China
- Lancefield T.M. Gayler R.J. Chattopadhay A. The Practical Application and Effects of a Variable Event Valve Timing System SAE Paper 930825
- Demmelbauer W. Dachs A. Lenz H. P. Variable Valve Actuation SAE Paper 1-99-10-12
- Su Yan Liguang Li Min Xiao Zhaoyang Zheng Development about the Variable Valve Timing(VVT) of Automotive Engine in Abroad Mechanical Mechanism, Automotive Technology(Chinese) 285 1999 6
- Ma T.H. Effect of Variable Engine Valve Timing on Fuel Economy SAE Paper 880390
- Ma T.H. Rajabu H. Computer Simulation of an Otto-Atkinson Cycle Engine with Variable Timing Multi-intake Valves and Variable Compression Ratio SAE Paper 884053
- Robnett J. Performance Characteristics of an electro-hydraulic variable valve timing system: Lost motion principle SAE Paper 937102
- Haugen D.J. Blackshear P.L. Pipho M.J. Esler W.J. Modifications of a Quad 4 Engine to Permit Late Intake Valve Closure SAE Paper 921663