Method of forming controllable premixed dimethyl ether fuel


Application Number: 00119437
Application Date: 2000.07.11
Publication Number: 1287243
Publication Date: 2001.03.14
Priority Information:
International: F23D14/62
Applicant(s) Name: Shanghai Jiaotong Univ.
Address:
Inventor(s) Name: Huang Zhen;Zhang Guangde;Qiao Xinqi
Patent Agency Code: 31201
Patent Agent: zhou wenjuan
Abstract In the present invention, one controllable premixed dimethyl ether gas forming device is used. In the later stage of induction stroke or the initial stage of the compression stroke of engine, the control valve is shut off, certain amount of dimethyl ether in 3.0 MPa pressure is sprayed by the oil nozzle to pre-mixing chamber; and while the piston moves upwards to near the top dead point the control valve is opened. Inside the pre-mixing chamber and the main combustor, dimethyl ether is made to mix with air successively for three times. By regulating the closed time of control valve, the air amount in the pre-mixing chamber is limited to ensure no ignition of the mixed gas in pre-mixing chamber until the control valve is opened. In this way, the present invention makes it possible to prepare homogeneous dense mixed gas.