in this paper, a numerical study is performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (rcci) combustion mode in a heavy-duty, single-cylinder diesel engine with gasoline and diesel fuels. in rcci strategy in-cylinder fuel blending is used to develop fuel reactivity gradients in the combustion chamber that result in a ...

In this work, a novel Silicon on Insulator (SOI) MOSFET is proposed and investigated. The drain and source electrode structures are optimized to enhance ON-current while global device temperature and hot carrier injection are decreased. In addition, to create an effective heat passage from channel to outside of the device, a silicon region has embedded in the buried oxide. In order to reduce th...

The objective of this research was to develop advanced diesel combustion strategies for emissions reduction in a multi-cylinder diesel engine. The engine was equipped with an electronically-controlled, common-rail fuel injection system, and an exhaust gas recirculation (EGR) system. This experimental setup allowed a wide range of operating conditions to be explored. Effects of various injector ...

The effects of two pilot injections on combustion and emissions were evaluated in a single−cylinder turbocharged diesel engine, which operated premixed charge compression ignition (PCCI) modes with multiple heavy exhaust gas recirculation under the low load by experiments simulation. It was revealed that delay start first injection (SOI−P1) or advance second (SOI−P2), respectively, pressure, he...

Small diesel engines are widely used for commercial vehicle and passenger car applications due to their higher torque requirements, fuel economy, and better thermal efficiency. These engines are exposed to different operating and environmental conditions and hence emissions from these engines are erratic. Strategies are required to enhance performance and reduce engine-out emissions considering...

Reactivity control compression ignition engines illustrated suitable abilities in emission reduction beside high thermal efficiency. In this research, nine various direct fuel injection strategies were studied numerically: three cases with single strategy and six split different start of (SOI). all simulated cases, equivalence ratio kept constant (i.e., 0.3). Among strategies, showed higher IME...

Hydrogen, as a suitable and clean energy carrier, has been long considered primary fuel or in combination with other conventional fuels such gasoline diesel. Since the density of hydrogen is very low, port fuel-injection configuration, engine’s volumetric efficiency reduces due to replacement by intake air. Therefore, direct in-cylinder injection (injection after valve closes) can be solution f...

This study was aimed to explore the effects of different post-injection parameters on cracking, formation mechanism, composition, and carbon atoms distribution exhaust hydrocarbon (HC) compounds diesel engine. The influence three fuel masses (PIM) six dwell duration with start injection (SOI) timings were assessed an operating speed 1000 rpm a basic engine load 0.5 MPa. Post-injection strategy ...