The electromechanical control of valve timing at different supply voltages
Journal Title: International Journal of Automotive Engineering and Technologies - Year 2013, Vol 2, Issue 4
Abstract
Electromechanical valve systems (EMS) add advantages to engines in terms of performance and emission by eliminating the limitations of conventional variable valve systems that operate mechanically. Electromechanical valve systems also eliminate the need for certain mechanical parts (such as cam shaft and valve lifters), enabling valve timing to occur at any desired rate as independent of the cam shaft of the engine. End of the experimental works on Authors' previously published papers [1], give us the idea that more investigations are required on controlling the valve timings with ideal voltages. The purpose of this study was to measure the valve profile and electrical behaviour (coil current) of an electromechanical system designed for small volume internal combustion engines at different supply voltages (24 V, 33 V, 42 V, and 48 V), low and high engine speeds (1200 rpm and 3600 rpm), different valve openings (0o, 9o, 18o, 27o, and 36o KMA before the top dead centre), and different closing angles (27o, 36o, 50o, 63o, and 72o KMA after the bottom dead centre). An electromechanical valve system with a supply voltage of 33 V was most suitable for low-speed engine operations in order to achieve the identified valve timing. The amount of electricity consumed by using a 33 V supply voltage instead of a 42 V supply voltage at low engine speeds in the electromechanical valve system was bottom that the amount of electricity consumed by an electromechanical valve system operated with a supply voltage of 42 V at all engine speed intervals.
Authors and Affiliations
Bülent ÖZDALYAN*| Karabuk University, Mechnaical Engineering Faculty, 78050, Karabuk, Turkey., Mehmet TAŞLIYOL| Karabük University, Eskipazar Vocational High School, 78050, Karabük, Turkey.
Keywords
Related Articles
- EP ID EP3881
- DOI -
- Views 582
- Downloads 29
Structural and Thermal Analysis of Different Piston Materials with Cooling (Due to Combustion Pressure) Using Finite Element Analysis
In this research, we will be taking three different types of IC engines piston namely flat, bowled and shallow. These pistons will be made up of three different types of materials Alloy steel-1040, aluminium alloy-6061 a...
POTENTIAL OF A MEDIUM GRADE LOW HEAT REJECTION DIESEL ENGINE WITH CRUDE JATROPHA OIL
Investigations were carried out to evaluate the performance of a medium grade LHR diesel engine consisting of air gap insulated piston with 3-mm air gap, with superni (an alloy of nickel) crown and air gap insulated line...
Drag Coefficient Determination of a Bus Model Using Reynolds Number Independence
Full-scale wind tunnel tests require too much time and cost to determine drag coefficients of vehicles. In this study, drag coefficient of a blunt bus model was tried to be determined using Reynolds number independence....
Determination of the fuel properties of cottonseed oil methyl ester and its blends with diesel fuel
In this study; density, kinematic viscosity, calorific value, flash point and water content of methyl ester produced from cottonseed oil (CO) were determined under varying blend ratio with ultimate euro diesel fuel, also...
Possibility of Turkey to Transit Electric Vehicle-based Transportation
Electric vehicles (EV) are widely viewed as attractive rivals to internal combustion engines. However, to explore economic challenges of EVs is of crucial importance. This paper analyses the potential of Turkey to transi...