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首页> 外文会议>FISITA World Automotive Congress >REDUCTION OF NO_x AND SOOT EMISSIONS FROM A SINGLE CYLINDER DIESEL ENGINE BY UTILIZING LOW COMPRESSION RATIO AND INTAKE AIR BOOSTING TO MEET FUTURE EMISSION REGULATIONS
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REDUCTION OF NO_x AND SOOT EMISSIONS FROM A SINGLE CYLINDER DIESEL ENGINE BY UTILIZING LOW COMPRESSION RATIO AND INTAKE AIR BOOSTING TO MEET FUTURE EMISSION REGULATIONS

机译：通过利用低压缩比和进气通气升压来减少单缸柴油发动机的NO_X和烟灰排放，以满足未来排放规范

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摘要

Reduction of Nitrogen Oxide (NO_x) and soot emissions is extremely important to enable diesel engines to meet future emission norms. Since Low compression ratio (LCR) has the potential for simultaneous reduction of both these emissions, it is important to explore its advantages for Bharat Stage VI emission norms and beyond. Also, intake air boosting in combination with LCR can give extremely encouraging results. This research work aims at investigating the potential of low compression ratio in combination with intake air boosting to get extremely low engine out NO_x and soot emissions. For this purpose, a naturally aspirated (NA) common rail direct injected (CRDI) single cylinder diesel engine was converted from its base compression ratio of 18:1 to a lowered compression ratio of 14:1. Further the same engine was equipped with a mechanically driven supercharger for intake air boosting. The experimental investigations have revealed that reduction of compression ratio in combination with intake air boosting have resulted in more than 30% reduction in NO_x emissions and 90% reduction in soot emissions with slight penalty in brake specific fuel consumption (BSFC) especially at high speeds. Further, intake air boosting could enable around 15% increase in engine power and torque by increasing fuel injection quantity while retaining the advantages in reduced NO_x and soot emissions. Increase of torque and power could also lead to a significant reduction in BSFC in full load operating conditions.
机译：氮氧化物（NO_X）和烟灰排放的减少是非常重要的，使柴油发动机能够满足未来的排放规范。由于低压缩比（LCR）具有同时减少这些排放的可能性，因此探索其对BHARAT阶段VI排放规范和超越的优势。此外，与LCR组合的进气促进可以给出极其令人鼓舞的结果。该研究工作旨在研究低压缩比的潜力与摄入空气提升的电位，以获得极低发动机OUT NO_X和烟灰排放。为此目的，从其基部压缩比为18：1的基础压缩比转换为自然吸气（NA）共轨直接注射（CRDI）单缸柴油发动机。此外，相同的发动机配备有机械驱动的增压器，用于进气气压。实验研究表明，与进气升压组合的压缩比降低导致NO_X排放量超过30％，烟灰排放量减少90％，在制动特定燃料消耗（BSFC）中略有罚款，特别是高速。此外，通过增加燃料喷射量，进气通气升压可以使发动机功率和扭矩提高约15％，同时保留降低NO_X和烟灰排放的优点。扭矩和功率的增加也可能导致BSFC在满载操作条件下显着降低。

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