The Advanced Diesel Common Rail System for Achieving a Good Balance Between Ecology and Economy

摘要

At present, various efforts are being made in the industrial world to preserve the earth's environment. Automobile industry has to comply with the emission control regulations including NO{sub}x and PM and the requirement of reducing CO{sub}2 emission from the viewpoint of global warming protection and energy saving. In these situations, diesel engines having a high potential to reduce CO{sub}2 emission are attracting much attention. In order to enhance the potential of diesel to reduce CO{sub}2 while solving its problems ('slow, dirty, noisy'), common rail systems are vital. DENSO developed an advanced common rail system (CRS) that integrates fuel injectors capable of delivering up to five injection events per combustion cycle at 180 MPa injection pressure. This paper describes the injection performance and effects of the 180 MPa common rail system and then explains the next-generation common rail system.