nitrogen oxides (nox) contribute to a wide range of environmental effects including the formation of acid rain and destroy ozone layer. in-cylinder high temperature flame and high oxygen concentration are the parameters which affect the nox emissions. the egr system is a very effective way for reducing nox emission from a diesel engine (via reduction of these parameters), particularly at the hi...

Experimentation about alternative fuels started mostly after the oil crisis of 1980’s to 1990’s after the World War II. In order to reduce the use of petroleum product which are limited in nature, the idea of alternative fuels was developed. In this paper an attempt has been made to investigate the engine performance in a four stroke single cylinder water cooled diesel engine using pure diesel ...

Ethanol biofuel could play an important role in reducing petroleum consumption by enabling a substantial increase in the fuel efficiency of gasoline engine vehicles. This ethanol boosted engine concept uses a small amount ethanol to increase the efficiency of use of a much larger amount of gasoline by approximately 30%. Gasoline consumption and the corresponding CO2 emissions would thereby be r...

A new method for the simulation of gas turbine fuel systems based on an inter-component volume method has been developed in this study. It is able to simulate the performance behaviour of each of the hydraulic components including pumps, valves, metering unit, etc. of a fuel system using physics-based models, which potentially offers more accurate results compared with those using transfer func...

in the present work, the simultaneous effects of fuel injection rate and injection of air jet into the combustion chamber on exhaust emissions, combustion process and performance parameters in a direct injection diesel engine were investigated. in order to create an air jet, a design was presented in which a secondary chamber (air cell) was created inside the cylinder and was joined to the main...

in this paper, a new guidance method for surface to surface ballistic missiles without mandatory engine cut-off will be presented. the complexity of solid fuel engine cut-off demands a comprehensive method for guiding these missiles. in the method presented in this paper, a certain guidance law is applied such that by transmitting appropriate commands to the control system, by changing the miss...

Citation: Chang Y, Jia M, Li Y and Xie M (2015) Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel mechanism focusing on engine-relevant conditions. Front. Mech. Eng. 1:11. doi: 10.3389/fmech.2015.00011 Application of the optimized decoupling methodology for the construction of a skeletal primary reference fuel mechanism focusing on eng...

Tradeo s between low feedgas emissions and smooth brake torque are discussed in the context of an engine equipped with variable camshaft timing VCT The use of VCT lowers the generation of feedgas emissions but adversely a ects the torque response However with the addition of an electronic throttle and knowledge of online torque the tradeo s between emissions and drivability in the VCT engine ca...

Fuel cell vehicles are the subject of extensive research and development because of their potential for high efficiency and low emissions. Because fuel cell vehicles remain expensive and the demand for hydrogen is therefore limited, very few fueling stations are being built. To try to accelerate the development of a hydrogen economy, some original equipment manufacturers (OEM) in the automotive...