ディーゼルエンジンの新技術

摘要

10年ほど前には黒い煙から環境を汚す元凶として非難rnの的にまでなっていたディーゼル車であるが，各メーカrnの絶え間ない努力によるクリーン化の進行とともにそのrn悪いイメージが払拭されつつある．%The diesel engine is an attractive power source for automobiles when considering global warming and saving energy resources due to the excellent thermal efficiency and performance. Technologies for reducing the exhaust gas emissions have been significantly improved and diesel vehicles have become recognized as ecologically responsible, further innovations to clean the exhaust gas are still needed to establish more reliable and lower cost technologies. This overview will detail developments and prospects for diesel engine technologies, including turbo-charging and EGR systems, common rail fuel injection systems, combustion technologies, after-treatment systems of the exhaust gas, and diesel hybrid systems.