Geodesic
Fully Variable Valve Control: A Geometric Approach
Journal for geometry and graphics, Tome 22 (2018) no. 1, pp. 99-114 Cet article a éte moissonné depuis la source Heldermann Verlag

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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 
@article{JGG_2018_22_1_JGG_2018_22_1_a9,
     author = {A. Gfrerrer and J. Lang },
     title = {Fully {Variable} {Valve} {Control:} {A} {Geometric} {Approach}},
     journal = {Journal for geometry and graphics},
     pages = {99--114},
     year = {2018},
     volume = {22},
     number = {1},
     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/