The experimental results showed that the injection retardation of 2 °CA could satisfy lower NOx and break specific fuel consumptions without significant adverse effects on the other engine parameters, while the further retarding of the injection timing deteriorated the parameters. The retarded injection...
The only drawback of the proposed method was a 50% higher amount of NOX. Retarding spark ignition timing corrected the added NOX formation. Part-loads operation of the engines affects the combustion stability, emission formation, and thermal efficiency [26]. Due to the non-developed flame ...
Additionally, the results indicated that increasing the compression ratio mitigated the effect of a higher fuel octane number on retarding the ignition timing and lengthening the ignition delay period.Akira TerashimaNaoya ItoTomoya TojoAkira Iijima
knock tendency and its intensity increase initially and then decrease due to the comprehensive effect of ethanol evaporation and fuel stratification; on the contrary, for Position B (ethanol injecting toward end-gas region), retarding the injection timing of ethanol can effectively reduce the knock pr...
Different strategies, such as retarding injection timing, increasing injection pressure, employing common rail fuel injection system, pilot injection, multi-injection, pre-mixed charge compression ignition (PCCI), Homogeneous Charge Compression Ignition (HCCI), EGR, and after treatment devices are adopted...
In addition, retarding the post-injection timing prolonged the combustion duration and also reduced the nitrogen oxides emissions and ITE. By increasing the post-injection quantity up to 15%, the combustion process deteriorated, and carbon-based emissions such as parti...
The effects of MWCNTs on the combustion, performance, and emission characteristics of B20 are investigated at various concentrations by a single-cylinder diesel engine under different engine speeds. The results show that B20 fuels with MWCNTs addition reduced the ignition-delay (ID), advanced the ...
Basically, Methanol has an effect of retarding ignition. However, Within 10% of total carbon mole number in DME, Methanol slightly changed the onset timing of Low Temperature Reaction (LTR) with increasing thermal-ignition preparation range. It means that controlling combustion phasing of DME can ...
On this basis, the validated model was applied to investigate the effects of the intake valve closing timing strategy. The simulation results indicated that, the volumetric efficiency decreases with the retarding of intake valve closing timing in three cases while it increases as the intake valve ...
There is evidence to suggest that effects on injection timing, ignition delay, adiabatic flame temperature, radiative heat loss, and other combustion phenomena all play some role. The biodiesel NOx effect can be mitigated by modifying engine control settings - particularly by retarding injection timing...