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Date of Publication:2015-01-01

Journal:内燃机学报

Affiliation of Author(s):化工学院

Volume:33

Issue:4

Page Number:297-302

ISSN No.:1000-0909

Abstract:To control premixed compression ignition phase in internal combustion
   engines,a new method called high pressure air jet controlled compression
   ignition(JCCI)was proposed to realize premixed combustion at all load
   operations. To investigate the in-cylinder premixed combustion processes
   of high pressure air JCCI,a three-dimensional CFD model coupled with
   reduced chemical kinetics has been developed to simulate the ignition
   and combustion at different air jet pressures. Simulation results show
   that the combustion phase of pre-mixture can be controlled near the top
   dead center with different high pressure air jets,and rapid combustion
   can be realized at low air jet pressure. Intensification of low
   temperature reactions and high to low of high temperature reactions are
   observed. At high air jet pressure,the decreased and delayed peak
   pressure,long combustion duration,low in-cylinder temperature, decreased
   NO_x emissions and increased CO emissions could be found.

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