The rotational motion of the valve during engine operation exists and research presented in this paper has shown that it can have significant importance in the costs related to the operation of the system. The main motion of the valve is an alternating translation along its axis of symmetry, but which is accompanied by an independent rotation around its own axis, possibly due to the constructive shape of the valve. This rotational movement is an important phenomenon with practical applications. The existence of this valve rotation movement has a number of advantages, mainly leading to an increase in the operating period of the valve and implicitly of the engine. An experimental study of the valve rotation is presented in the paper and a comparison with theoretical models is made.
TarazaDHeneinANTeodorescuM,et al.Dynamics and friction of valve trains, presented at the Arc Annual Meeting, University of Michigan, 1999.
5.
LewisRDwyer-JoyceRS. Automotive engine valve recession. London: Professional Engineering Publishing, 2002.
6.
Taylor CM. Engine tribology. Amsterdam: Elsevier, 1993.
7.
WangY. Introduction to engine valvetrains. Warrendale: SAE International, 2007.
8.
KimDLeeJJeongY,et al.Effect of valve train design parameters on valve rotation performance of a diesel engine, presented at the FISITA World Automotive Congress, Barcelona, 2004.
9.
MuftiARJefferiesA. Novel method of measuring tappet rotation and the effect of lubricant rheology. Tribol Int2008; 41: 1039–1048.
10.
MorenoDMucchiyEDalpiazyG,et al.Multibody analysis of the desmodromic valve train of the Ducati motor engine, presented at the Multibody Dynamics - ECCOMAS Thematic Conference, Milano, 2007.
11.
VlaseS, et al.Elasto-dynamics of a solid with a general “rigid” motion using FEM model. Part II. Analysis of a double Cardan joint. Rom J Phys2013; 58: 882–892.
12.
VlaseS, et al.Kane’s method-based simulation and modeling robots with elastic elements, using finite element method. Mathematics2020; 8: 1–21.
13.
ChoiTD, et al.Optimization of automotive valve train components with implicit filtering. Optimization and Engineering2000; 1: 9–27. 2000.
14.
FlemingNPearsonRA. Coupled dynamic valve spring and engine performance simulation. Lotus Engineering Software2003: 1–14.
15.
MorenoD, et al. Multibody analysis of the desmodromic valve train of the Ducati MotoGP engine. Conference Multibody Dynamics - ECCOMAS Thematic Conference, Milano, 2007.
16.
TeodorescuM, et al.Jounce and impact in cam tappet conjunction induced by the elastodynamics of valve train system. Meccanica2006; 41: 157–171.
17.
DalpiazGRivolaA. A model for the elastodynamic analysis of a desmodromic valve train, in Tenth World Congress on the Theory of Machines and Mechanisms, Oulu, Finland1999: 1534–1542.
18.
TeodorescuM, et al.Elastodynamic transient analysis of a four-cylinder valvetrain system with camshaft flexibility. Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-Body Dynamics2005; 219: 13–25.
19.
JelenschiL. Research of the rotational movement of the internal combustion engines valves. PhD thesis, Transilvania University of Brasov, 2012.
20.
KimD, et al. Effect of valve train design parameters on valve rotation performance of a diesel engine, presented at the FISITA World Automotive Congress, Barcelona, 2004.
21.
MorenoD, et al. Multibody analysis of the desmodromic valve train of the Ducati MotoGP engine, presented at the Multibody Dynamics - ECCOMAS Thematic Conference, Milano, 2007.
22.
OnescuC, et al. The influence of cam profile deviations on tribologic parameters for the cam-follower coupler with flat disc from thermal engine, presented at the 12th IFToMM World Congress, Besançon, France, 2007.
23.
RaduIS, et al. Injection timing adjustment for a common rail diesel system using a 1-D simulation tool, presented at the CAR 2011 - The International Congress on Automotive, Pitești, 2011.
JelenschiLCofaruCSanduG. Novel method for measuring the engine valve rotation In: International Conference Motor Vehicle & Transportation - MVT 2012, Timișoara, 2012.
42.
JelenschiLCofaruC. Investigating the influence of valve rotation on internal combustion engine's exhaust emissions. Scientific Bulletin of University Politehnica of Bucharest Series D: Mechanical Engineering2012; 212–218.
43.
JelenschiLCofaruCSanduG. Determining the influence of oil temperature on valve rotation for a direct acting valve train. Annals of the Oradea University. Fascicle of Management and Technological Engineering2012; XI(XXI): 1.50–1.53.
44.
JelenschiLCofaruCSanduG. Investigating the effects of oil pressure on valve rotation for a direct acting valve train. Recent2012; 13: 181–184.
45.
VlaseS, et al.A method for the study of the vibration of mechanical bars systems with symmetries. Acta Technica Napocensis. Series-Applied Mathematics, Mechanics and Engineering2018; 0.60: 539–544.
46.
VlaseS. Elimination of Lagrangian-multipliers. Mech Res Commun1987; 0.14: 17–22.
47.
ScutaruML, et al.New analytical method based on dynamic response of planar mechanical elastic systems. Boundary Value Problems2020; 0.2020: Art. No. 104.
48.
JelenschiL, et al. Investigating the hydraulic tappet rotation for a direct acting valve train. Bulletin of the Transilvania University of Braşov2012; 5: 13–18.
49.
JelenschiL, et al.State of the art of engine valve and tappet rotation. Bulletin of the Transilvania University of Braşov2011; 4: 19–24.
50.
JelenschiL, et al.The necessity for rotational movement of valve and tappet in internal combustion engines. Scientific Bulletin of the University of Pitești - Automotive Series2011; 21: 123–128.
51.
VlaseSTeodorescuPP. Elasto-Dynamics of a solid with a general “rigid” motion using FEM model. Part I. Theoretical approach. Rom J Phys2013; 0.58: 872–881.
52.
VlaseS, et al.Coupled transverse and torsional vibrations in a mechanical system with two identical beams. AIP Adv2017; 7: Art. No. 065301.
53.
NegreanI, et al.A new approach in analytical dynamics of mechanical systems. Symmetry-BASEL2020; 12: Art. No. 95.
54.
MarinM, et al.An extension of the domain of influence theorem for generalized thermoelasticity of anisotropic material with voids. J Comput Theor Nanosci2015; 12: 1594–1598.
55.
OthmanMIA, et al.A novel model of plane waves of two-temperature fiber-reinforced thermoelastic medium under the effect of gravity with three-phase-lag model. Int J Numer Method H2019; 29: 4788–4806.
56.
VlaseSMarinMOechsnerA. Considerations of the transverse vibration of a mechanical system with two identical bars. Proceedings of the Institution of Mechanical Engineers, Part L - Journal of Materials-Design and Applications2019; 233: 1318–1323.
57.
LiZChenLNieL,et al.A novel learning model of driver fatigue features representation for steering wheel angle. IEEE Trans Veh TechnolJan. 2022; 71: 269–281.
58.
WangYWangHZhouB,et al.Multi-dimensional prediction method based on bi-LSTMC for ship roll. Ocean Eng2021; 242: 110106.
59.
XiaoGJBenqiang ChenBQLiSC,et al.Fatigue life analysis of aero-engine blades for abrasive belt grinding considering residual stress. Eng Fail Anal2022; 131: 105846.
60.
MaXYQuanWDongZ,et al.Dynamic response analysis of vehicle and asphalt pavement coupled system with the excitation of road surface unevenness. Appl Math Model2022; 104: 421–438.
61.
VlaseSMarinMIuliuN. Finite element method-based elastic analysis of multibody systems: a review. Math2022; 10(2): 1–20. DOI: 10.3390/math10020257.
62.
JinXChenYWangL,et al.Failure prediction, monitoring and diagnosis methods for slewing bearings of large-scale wind turbine: a review. Measurement2021; 172: 108855.
63.
BieYMJinhua JiJHWangXG,et al.Optimization of electric bus scheduling considering stochastic volatilities in trip travel time and energy consumption. Comput-Aided Civ Infrastruct Eng2021; 36: 1530–1548.
64.
BhattiMMJunSKhaliqueCM,et al.Lie group analysis and robust computational approach to examine mass transport process using Jeffrey fluid model. Appl Math Comput2022; 421: 126936.
65.
ZeeshanAArainMBBhattiMM,et al.Radiative bioconvection nanofluid squeezing flow between rotating circular plates: semi-numerical study with the DTM-Padé approach. Modern Physics Letters BVol2022; 36: 2150552.
