SAE Technical Paper Series 1989
DOI: 10.4271/891674
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A Survey of Variable-Valve-Actuation Technology

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Cited by 85 publications
(19 citation statements)
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“…Variable valve timing also allows control of internal exhaust gas recirculation, thus improving fuel economy and reducing NOx emissions. Besides mechanical and hydraulic variable valve train options, electromagnetic valve actuators have been presented in the past [10], [12]. Recent works mark technical progress in this area [5], [7], [13].…”
Section: Introductionmentioning
confidence: 99%
“…Variable valve timing also allows control of internal exhaust gas recirculation, thus improving fuel economy and reducing NOx emissions. Besides mechanical and hydraulic variable valve train options, electromagnetic valve actuators have been presented in the past [10], [12]. Recent works mark technical progress in this area [5], [7], [13].…”
Section: Introductionmentioning
confidence: 99%
“…Benefits of each VVA depend on its design and functions. References [12] and [13] classify VVAs and briefly evaluate those functions and benefits. Among the VVAs, the variable cam phasing (VCP) and cam profile switching (CPS) types are the most popular owing to their simplicity and significant benefits.…”
Section: Previous Vva Designsmentioning
confidence: 99%
“…Flexible systems have thus become increasingly attractive as means of achieving optimal engine-in-vehicle operation. Advanced Variable Valve Actuation (VVA) technologies are particularly promising in saving fuel, reducing emissions and increasing Spark-Ignition (SI) engine output [1][2][3][4][5]. Among various VVA options, cam-phasing is gaining broad acceptance, due to its ease of implementation and tangible advantages over conventional fixed-cam engines [6][7][8][9][10][11].…”
Section: Introductionmentioning
confidence: 99%