Electromagnetic and Piezoelectric Combined Gas Injection Device
An injection device, combined technology, applied in the direction of fuel injection device, special fuel injection device, fuel supply device, etc., can solve the problem of inability to meet engine power and serialized engine power requirements, limited response speed, gas injection pressure and injection rate Reduce and other problems, achieve the effect of meeting the power and serialized engine power requirements, ensuring reliability and stability, and simplifying the engine structure
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[0018] Below in conjunction with legend the present invention is described in more detail:
[0019] The combined electromagnetic-piezoelectric gas injection device of the present invention is mainly composed of an electromagnetic-piezoelectric control part 1, a double piston part 3, a double needle valve nozzle part 4, an injection device body 5 and an upper end cover 8 of the injection device. The injection device body 5 has a first low-pressure oil drain port 2, a control oil inlet 6, a second low-pressure oil drain port 7, a gas inlet 9, etc. The top view of the oil passage at the gas inlet is shown in Figure 1(b).
[0020]The electromagnetic-piezoelectric control part 1 mainly includes a solenoid valve 10 , a piezoelectric control valve 11 , a piezoelectric control valve sleeve 12 , etc. Both the solenoid valve 10 and the piezoelectric control valve 11 are installed in the piezoelectric control valve sleeve 12 . Solenoid valve 10 mainly comprises electromagnet 13, electrom...
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