Geodesic
Fully Variable Valve Control: A Geometric Approach
Journal for geometry and graphics, Tome 22 (2018) no. 1, pp. 99-114.

Voir la notice de l'article provenant de la source Heldermann Verlag

Variable valve timing (VVT) and variable valve lift (VVL) are used to improve the performance, fuel economy and to reduce emissions of a combustion engine. Recently these issues have assumed increasing importance. Here we will combine VVT and VVL in a unified concept of variable valve control (VVC). We present a mechanical solution to fully variable valve control. The cam consists of two symmetric parts that slide on the camshaft; this way the system can provide a continuum of cam characteristics to meet a wide range of engine requirements.
Classification : 53A17, 53A04
Mots-clés : Internal combustion engine, camshaft, valve timing, valve lift, valve control, surface interpolation, envelope surface 
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     author = {A. Gfrerrer and J. Lang },
     title = {Fully {Variable} {Valve} {Control:} {A} {Geometric} {Approach}},
     journal = {Journal for geometry and graphics},
     pages = {99--114},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {2018},
     url = {http://geodesic.mathdoc.fr/item/JGG_2018_22_1_JGG_2018_22_1_a9/}
}
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A. Gfrerrer; J. Lang . Fully Variable Valve Control: A Geometric Approach. Journal for geometry and graphics, Tome 22 (2018) no. 1, pp. 99-114. http://geodesic.mathdoc.fr/item/JGG_2018_22_1_JGG_2018_22_1_a9/