This is part two of the paper on conceptual design of an engine valve. The previous paper describes the background and the need of an engine valve for an internal combustion engine. The present state of the engine valve technology and the innovations incorporated in its design has been described. This paper presents the conceptualization of an innovative valve train aiming at lesser number of c...

This study demonstrates a technology, ‘‘Piezoelectric Windmill’’, for generating the electrical power from wind energy. The electric power-generation from wind energy is based on piezoelectric effect and utilizes the bimorph actuators. Piezoelectric Windmill consists of piezoelectric actuators arranged along the circumference of the mill in the cantilever form. Using the camshaft gear mechanism...

The paper analyzes the components of cam profile a camshaft an internal combustion engine. authors developed method calculating width and area contact, as well degree slippage occurring in friction pair consisting tappet sleeve, resistance to wear profile, depending on roughness surfaces working lubricating medium. Studying parts shows that uneven occurs along its surface. values parameters aff...

Performance evaluation of Internal Combustion Engines (ICEs) and setting different emission standards has manifested the importance of pollution reduction as well as the optimal fuel consumption of these engines. Accordingly, the Engine Management Systems (EMS) are utilized which resulted in optimizing the power alongside the decrease in pollutant emission, through preparing the appropriate air...

The effects of spark timing and exhaust valve timing change on exhaust gas temperature during cold start of an SI engine are studied through engine bench tests. It is observed that the exhaust gas temperature increases when the spark timing and valve timing are retarded individually or simultaneously, due to late combustion or slow flame speed. However, using COVimep it is also investigated tha...

Abstract This paper describes the engineering structure and functions of a typical solenoid valve used in hydraulic mechanisms that are based on variable camshaft timing (VCT). The main operating parameters functional utility coefficients valves have been defined. Tests 10 reference prototype were run test stand for comparative assessment both concepts Welch Mann–Whitney statistical tests mean ...