Liquid jet measurement unit and control method
A metering unit and control method technology, applied in fuel injection control, electrical control, engine control, etc., can solve problems such as difficulty and implementation difficulty
Active Publication Date: 2016-04-13
ZHEJIANG FAI ELECTRONICS
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In addition, predicting the displacement of the plunger is as difficult as predicting the amount of fuel injection, and there will be certain difficulties in implementation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0081] Such as figure 1 As shown, the logic structure diagram of the liquid injection metering unit with sleeve-piston pump provided by the present invention includes a plunger pump 8 , a solenoid device 18 , a controller 13 , a nozzle 23 , and a return spring 10 . Wherein, the plunger pump device 8 includes a sleeve 11 , a plunger 12 , an inlet valve 16 and an outlet valve 17 , and the sleeve 11 and the plunger 12 closely cooperate to form a pressure delivery volume 9 . The solenoid device 18 includes a coil 19, a yoke 20, a magnetic gap 21 and an armature 12a. The armature 12a and the sleeve 11 can be integrated into one design, the armature 12a surrounds the sleeve 11, the yoke 20 and the armature 12a are made of magnetically conductive material, and the front end of the armature 12a is located in the magnetic gap Near 21, after the coil 19 is energized, the armature 12a together with the sleeve 11 moves forward under the drive of the solenoid device 18, causing the pressu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a liquid jet measurement unit and a control method. The liquid jet measurement unit comprises a jet unit and a measurement controller. The jet unit comprises a solenoid device, a plunger pump and a nozzle; the solenoid device comprises coils, a magnet yoke and a magnetic resistor; the plunger pump comprises a plunger and a sleeve, the plunger and the sleeve are matched for forming a pressure feed cavity, and the pressure feed cavity is connected to a liquid inlet valve and a liquid outlet valve. The measurement controller provides drive signals for the solenoid device, comprises a monitoring device capable of monitoring the state parameters of the solenoid device, comprises the algorithm predicting the effective output work of the solenoid device through the state parameters and comprises the method for carrying out closed-loop control over the flow of the liquid jet measurement unit with the effective output work of the solenoid device as the variable, wherein the effective output work of the solenoid device is the energy needed for directly pressurizing liquid in the pressure feed cavity and forming jets. The liquid jet measurement unit and the control method have the advantages that the application range is wide and the control accuracy is high.
Description
technical field [0001] The invention belongs to the technical field of liquid metering, especially the liquid injection metering technology related to engines, and specifically relates to engine fuel injection devices, engine tail gas purification NOx selective catalytic reduction (SCR) systems, and diesel engine exhaust particulate matter filter collectors (DPF ) fuel injection regeneration system and its control technology. Background technique [0002] Liquid injection metering has a wide range of applications in the fields of chemical industry, medical treatment and power machinery, especially involving multiple core technologies of internal combustion power. [0003] With the increasingly prominent environmental problems, energy saving and emission reduction has become the most important theme in the engine industry. Many countries in the world have continuously introduced a series of engine and vehicle emission standards. For this, vehicles powered by internal combusti...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F01N3/025F01N3/20F01N9/00F02M51/04F02D41/30
CPCF01N3/2066F01N2560/021F01N2610/02F01N2610/1406F01N2610/1433F01N2610/144F01N2610/1453F01N2610/146F02M51/04F02M61/20F02M69/02Y02T10/12
Inventor 郗大光杨延相张平
Owner ZHEJIANG FAI ELECTRONICS