关键词: 多段喷射, 定容式燃烧, 燃油经济性

Abstract:

The GDI(Gasoline Direct Injection engine)technology has important application value for the vehicle dynamics，fuel economy and emissions.  By analyzing the emergence and development of the GDI，and the problems existing in the present study，a new type of electronic multiple GDI technology based on
constant vessel combustion was proposed.  The experiment and the related mechanism research were conducted，which mainly had difference enhancing the charge density fuel injection and spray macro morphology.  This technology can achieve optimal performance of fuel economy and emissions.

Key words: multiple injection, constant vessel combustion, fuel economy