This paper investigates the performance of hydrogen-fueled, spark-ignited, single-cylinder Cooperative Fuel Research using experimental and numerical approaches. study examines effect air–fuel ratio on engine performance, emissions, knock behaviour across different compression ratios. The results indicate that λ significantly affects both with a value 2 yielding highest efficiency lowest emissi...

The burning rate and temperature of the carbon particles are known to affect the efficiency of a fluidized bed combustor, and also the emission levels of undesired noxious components. The main results of an extensive study on the fluidized bed combustion bchaviour of a single carbon particle [I] arc summarized. Calculations have been carried out with a newly developed transient model, the ASPC ...

A large eddy simulation (LES) model was developed to simulate the combustion process in a spark-assisted homogeneous charge compression ignition (SACI) engine. First, an ignition and flame propagation model based on a reaction progress variable is presented. The reaction progress variable is defined based on the normalized cumulative heat release. Transport equation for the progress variable is...

0016-2361/$ see front matter 2012 Elsevier Ltd. A doi:10.1016/j.fuel.2012.01.042 ⇑ Tel.: +90 262 3032285; fax: +90 262 3032203. E-mail address: [email protected] Homogeneous charge compression ignition (HCCI) combustion mode has some benefits compared to the most popular conventional combustion forms used in the internal combustion (IC) engines: spark ignition (SI) and compression igni...

the hcci combustion process is initiated due to auto-ignition of fuel/air mixture which is dominated by chemical kinetics and therefore fuel composition has a significant effect on engine operation and a detailed reaction mechanism is essential to analysis hcci combustion. a single zone-model permits to have a detailed chemical kinetics modeling for practical fuels. in this study a single-zone ...

ethanol as a renewable and alternative fuel when utilized in homogeneous charge compression ignition (hcci) has potential to substantially reduce nitrogen oxides (nox) and particle matter (pm) and can maintain hcci sustainability. hcci engine operation is limited between two ringing and misfire regions that too retard and advance combustion phasing highly affect hcci engine operation, performan...

diesel fuel has a limited resource and concerns over environmental pollution areleading to the use of ‘bio-origin fuels’ as they are renewable and environmentally benign. jatrophamethyl ester, an esterified biofuel, has an excellent cetane number and a reasonable calorific value.it closely resembles the behaviour of diesel. however, being a fuel of different origin, the standarddesign limits of...

Reactivity controlled compression ignition (RCCI) is a highly efficient and clean combustion concept, which enables the use of wide range renewable fuels. Consequently, this promising dual fuel concept great interest for realizing climate neutral future transport. RCCI very sensitive operating conditions requires advanced control strategies to guarantee stable safe operation. For real-world imp...

The Heat Release Rate (HRR) model of ICEs is known to be most sensitive the ratio specific heats, ?, which depended on temperature and excess air ratio, ?. HRR cannot measured directly. As such, accurate models, as well expressions ? ? are required behaviour mathematically. In this work, an improved based ?(T,?) was used investigate effect syngas substitution diesel at constant energy combustio...