The adverse environmental impact of fossil fuel combustion in engines has motivated research towards using alternative low-carbon fuels. In recent years, there been an increased interest studying the mixtures consisting mainly hydrogen and carbon monoxide, referred to as syngas, which can be considered a promising toward cleaner technologies for power generation. This paper provides extensive r...

An important building block of a new sustainable energy infrastructure is the transition of the transportation sector from inefficient internal combustion engines towards electric drives. Proton exchange membrane fuel cells (PEMFCs) are promising power sources since they can generate electricity from the electrochemical oxidation of a fuel, e.g. hydrogen or methanol, which would provide higher ...

The expected increase in the use of environmentally friendly liquid fuels medium and heavy-duty compression ignition engines (for both off-road transport applications), together with well-documented benefits hydrogen-carriers to decrease energy dependence achieve a neutral-carbon economy (internal combustion highly contributing global CO2 emissions), have motivated this work. autoignition chara...

Background Mitigation of greenhouse gas emissions from transportation sources will require implementation of a variety of strategies, including improvements in the efficiency of overall vehicle/fuel systems, such as hybrid and new high-efficiency diesel engines, and use of synthetic fuels to replace or supplement petroleum-based fuels. A particularly attractive class of synthetic fuels is oxyge...

Oil provides 33% of the world’s energy (Wilcox, 2014) and transportation engines account for over 60% of the 70 million barrels of crude used each day. Engines power the world’s roughly one billion passenger vehicles, as well as trucks and heavy-duty vehicles. In theUSA, engines consume 14million barrels of oil per day or 2.5 gal/person. Since there are insufficient reserves, 62% is imported, a...

Fuel additives incorporating nanosized ceria have been increasingly used in diesel engines as combustion promoters. However, few studies have assessed the impact of these nanotechnology-based additives on pollutant emissions. Here, we systematically compare emission rates of particulate and gaseous pollutants from a single-cylinder, four-cycle diesel engine using fuel mixes containing nanoceria...

Perkembangan teknologi dan industri yang semakin pesat berbanding terbalik dengan cadangan sumber bahan bakar fosil menipis. Hal ini mendorong dilakukannya penelitian untuk mengoptimalkan penggunaan mengurangi ketergantungan akan bakar, khususnya solar. Berdasarkan pemikiran itu, maka dilakukan pengujian mesin diesel Yanmar TF 155 H-Di menggunakan ganda (dual fuel) solar + LPG. LPG digunakan ad...

One of the important problems in reducing of pollutant emission from DI and IDI diesel engines is trade-off  between soot and NOx. Split injection is one of the most powerful tools that makes the chance to shift the trade-off curve closer to origin.  At the present work, the effect of split injection on the combustion process and emissions of a cylinder IDI diesel engine under the specification...

The use of natural gas (NG) in dual-fuel heavy-duty engines has the potential to reduce pollutant and greenhouse (GHG) emissions from transport sector when compared conventional diesel engines. However, NG composition methane slip are interest because both can adversely affect benefits as an alternative fuel, especially considering GHG emissions. Therefore, this study experimentally investigate...

Fuel return valve is an important part of aviation engines. It achieves the cooling of integrated drive generator by regulating the amount of fuel in the oil cooler of integrated drive generator. Fault modeling and simulation of fuel return valve can provide targeted guidance for its maintenance. This paper establishes fuel return valve's mathematical model which includes the flow control valve...