The increasing environmental awareness of the last decades has led to a huge tightening restrictions on vehicle pollutant and carbon dioxide emissions. Friction dissipation plays strategic role as its reduction necessarily leads decrease in CO2 Valve timing system is responsible for significant part overall friction losses provides relatively wide margin improvement. This regulates intake exhau...

The multiobjective optimization of Slide-o-Cam is reported in this paper. Slide-o-Cam is a cam mechanism with multiple rollers mounted on a common translating follower. This transmission provides pure-rolling motion, thereby reducing the friction of rack-and-pinions and linear drives. A Pareto frontier is obtained by means of multiobjective optimization. This optimization is based on three obje...

In an electro-mechanical valve actuated engine, solenoid actuators drive the valves that control airflow into the cylinders, allowing elimination of the camshaft and flexible control of the valve timing. Individual control of the valves provides flexibility in valve timing over all engine operating conditions and fully enables the benefits of variable valve timing. This paper describes a closed...