investigations are carried out to evaluate the performance of a low heat rejection (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 liner with superni insert with different operating conditions of crude jatropha oil with varied injection timing and injection pressure.  performance parameters of brake ther...

The aim of paper was to discuss contribution bi-fuel CNG powered light commercial vehicles the well-to-wheel CO2 equivalent emissions, both today and in coming decades which development new fuels is expected. Field research done Belgrade, during one year, using Euro 5 diesel/LPG/CNG driving under low vehicle speed, engine load, exhaust gas temperature high number stops. as neutral methodology a...

  This paper presents a modeling study of a CNG Homogenous Charge Compression Ignition (HCCI) engine using single-zone and multi-zone combustion models. Authors' developed code could be able to predict engine combustion and performance parameters in closed part of the engine cycle. As detailed chemical kinetics is necessary to investigate combustion process in HCCI engines, therefore, GRI-m...

The objective of this paper is to investigate the effect of fuel injection pressure on power performance and fuel consumption of diesel engine. In a diesel engine, fuel injection pressure is an important aspect of the engines’ power performance in order to obtain combustion treatment. The experiments in this paper are performed on a four-cylinder two-stroke direct injection diesel engine. The d...

Compressed Natural Gas (CNG) is an affordable fuel with a higher octane number. However, older CNG kits without electronic controls have the potential to supply more when driving downhill due vacuum in intake manifold. Therefore, this article presents development of control system that accommodates road inclination angles improve efficiency. Machine learning involved work process engine speed, ...

In view of the increasing restrictions for CO2 mitigation, evaluation alternative fuels to ensure sustainability transportation is becoming increasingly important. Since some these alternatives can be refined from renewable sources, they are interesting perspective both: use current power-plants and emission. this sense, natural gas arises as an propellant substitute fossil fuels. Therefore, co...

The purpose of this study is to investigate the effect of injection parameters on a heavy duty diesel engine performance and emission characteristics. In order to analyze the injection and spray characteristics of diesel fuel with employing high-pressure common-rail injection system, the injection characteristics such as injection delay, injection duration, injection rate, number of nozzle hole...

Investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (LHR) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ was made on the inside portion of the cylinder head].The engine had different operating conditions...