MVM 2013 - Volume 39 - Number 4 Stress and deformation analysis for the lower knuckle bracket of front shock absorbers Ionel Vier, Viorel Nicolae, Danut-Gabriel Marinescu, Adrian Rosescu, Gheorghe Petrache Mobility and Vehicle Mechanics, vol. 39, no. 4, pp. 7-14, 2013. Abstract Full text Calculus and construction of a laser plug Dejanu Marcel, Dascalu Traian, Popa Dinel, Pârlac Sebastian, Salamu Gabriela Mobility and Vehicle Mechanics, vol. 39, no. 4, pp. 15-26, 2013. Abstract Full text Emission characteristics of a diesel engine using biodiesel produced from rapeseed Breda Kegl, Stanislav Pehan, Marko Kegl Mobility and Vehicle Mechanics, vol. 39, no. 4, pp. 27-34, 2013. Abstract Full text Variable intake valve lift on a port fuel injected engine and its effects on idle operation Adrian Clenci, Adrian Biziiac, Pierre Podevin, Rodica Niculescu Mobility and Vehicle Mechanics, vol. 39, no. 4, pp. 35-50, 2013. Abstract Full text