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Development of Innovative Variable Valve Event and Lift (VVEL) System
Technical Paper
2008-01-1349
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Nissan Motor Company has developed a compact and simple new variable valve actuation system called VVEL (Variable Valve Event and Lift) that can vary intake valve lift and valve event angle in a wide range, and adopted it on a newly developed 3.7L, V6 engine. This system combined with a variable valve timing (VTC) mechanism (or a cam phaser) has substantially enhanced engine performance attributes, namely, fuel economy, exhaust emissions, and engine output, because the system has the ability to freely control all of intake valve lift, event duration angle and phasing between intake and exhaust valves. This paper describes an outline of the VVEL system, the principle of system operation, and effects on engine performance attributes by this technology.
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Citation
Fujita, T., Onogawa, K., Kiga, S., Mae, Y. et al., "Development of Innovative Variable Valve Event and Lift (VVEL) System," SAE Technical Paper 2008-01-1349, 2008, https://doi.org/10.4271/2008-01-1349.Also In
References
- Takemura, S. Aoyama, S. Sugiyama, T. Nohara, T. Moteki, K. Nakamura, M. Hara, S. “A Study of a Continuous Variable Valve Event and Lift (VEL) System” SAE Paper 2001-01-0243
- Nakamura, M. Hara, S. Yamada, Y. Takeda, K. Okamoto, N. Hibi, T. Takemura, S. Aoyama, S. “A Continuously Variable Valve Event and Lift Control Device (VEL) for Automotive Engines” SAE Paper 2001-01-0244
- Arinaga, T. Kobayashi, M. Ushijima, K. Takemura, S. Aoyama, S. Nakamura, M. Hara, S. “A Study of Friction Characteristics of Continuously Variable Valve Event & Lift (VEL) System” SAE Paper 2006-01-0222
- Akasaka, Y. Fujita. T. Kiga, S. Mae, Y. Tomogane, K. Yamada, Y. Takeda, K. “Development of New Variable Event and Lift system (VVEL)” JSAE 20075619
- Takemura, S. Aoyama, S. Hara, S. Nakamura, N. “Development of multiple-link variable valve event and lift (VVEL) system” JSAE 20075709