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Exhaust check point injection compression ignition (ETC ), the trapped promote internal thermal residues high temperature high pressure jet fuel mixture is one of the most effective methods to achieve homogeneous charge compression ignition (HCCI). This paper is based on the ETCcombustion mode to study the effect of timing heating of the exhaust valve and the cooling effect of the pressure on the combustion process.. Results show that the best fuel economy can start injection of Ca BTDC at 1500r/min, the exhaust valve timing on combustion properties are strongly influenced by the 370, Shan'xi. Using the residual gas coefficient of the exhaust valve timing control, the combustion stage can be controlled indirectly by the intake temperature of the cylinder. In addition, constant pressure, inlet pressure increasing can increase the excess air coefficient decrease the mixture of average air temperature, which can also be control as the key parameters of the combustion phase in some areas. Therefore, the reasonable cooperation between the exhaust valve timing and the pressure pressure can effectively control the combustion process and emission minimization. At 1500r / min, 30 (calcium negative valve overlap (NVO) and 0.18 MPa pressure, the limit of low load and high load limit of HCCI combustion can be reached 0.27 MPa and 0.723 MPa, respectively.

Research on the Effect of ETCI Based HCCI Technology in the Best Fuel Area