CN213598076U

CN213598076U - Electromagnetic actuator of electronic speed regulator for VP rotor pump of diesel engine

Info

Publication number: CN213598076U
Application number: CN202021836409.4U
Authority: CN
Inventors: 施远强
Original assignee: Fortrust Power Control Technology Qidong Co ltd
Current assignee: Fortrust Power Control Technology Qidong Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-07-02
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses an electromagnetic actuator of an electronic speed regulator for a VP rotor pump of a diesel engine, which comprises a shell, a rotating main shaft, a position feedback mechanism positioned in the shell, a temperature measuring device, a coil assembly, a reset spring assembly, a rotor assembly, a stator assembly and a shaft steel sleeve; the eccentric ball head and the wire outlet assembly are positioned outside the shell. The position feedback mechanism consists of a position feedback circuit board component and a position feedback magnetic steel component; the position feedback circuit board is connected with the stator assembly, the position feedback magnetic steel assembly is connected with the rotating main shaft, and the temperature measuring device is arranged on the position feedback circuit board. According to the scheme, the position feedback mechanism and the temperature measuring device are additionally arranged in the device, so that rich control strategies are realized, such as external characteristic calibration, universal characteristic calibration, oil quantity correction based on temperature and the like, the control function of the electromagnetic actuator is improved, and the emission index can meet the requirement of national IV.

Description

Electromagnetic actuator of electronic speed regulator for VP rotor pump of diesel engine

Technical Field

The utility model relates to an electronic control system, concretely relates to electromagnetic actuator of electronic governor for diesel engine VP rotor pump.

Background

The electronic speed regulator for the VP rotor pump of the diesel engine can overcome the performance defects of the mechanical speed regulator of the diesel engine, such as: the diesel engine has the advantages of low response speed, low speed regulation precision, poor stability, incapability of realizing external characteristic calibration, universal characteristics and the like, thereby improving the performance index of the diesel engine and meeting the requirement of national IV emission index. As an actuator of an electronic governor, performance and reliability of an electromagnetic actuator are very important.

When the existing mechanical speed regulator is applied specifically, the existing mechanical speed regulator still cannot be matched with an electronic control system to work, the control effect is not ideal, more control strategies are not easy to realize, and the requirement of national VI emission indexes of diesel engines using VP rotary pumps cannot be met.

It is thus seen that the need to provide an electromagnetic actuator that can be used in an electronic governor for a diesel engine using a VP rotor pump has been a problem to be solved in the art.

SUMMERY OF THE UTILITY MODEL

To there is the single problem of control strategy in prior art, the utility model aims to provide an electromagnetic actuator of electronic governor for diesel engine VP rotor pump, the effectual problem that exists of having solved prior art.

In order to achieve the above purpose, the electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine provided by the utility model comprises a shell, a rotating main shaft, a coil assembly, a return spring assembly, a rotor assembly, a stator assembly and a shaft steel sleeve, wherein the coil assembly, the return spring assembly, the rotor assembly, the stator assembly and the shaft steel sleeve are positioned in the shell; the eccentric ball head and the wire outlet assembly are positioned outside the shell; the device also comprises a position feedback mechanism and a temperature measuring device; the temperature measuring device is mounted on the position feedback mechanism.

Further, the position feedback mechanism is fixed above the stator assembly in the shell; the position feedback mechanism consists of a position feedback circuit board component and a position feedback magnetic steel component; the position feedback magnetic steel assembly is arranged on the rotating main shaft; the position feedback circuit board assembly is arranged on the stator assembly.

Further, the measuring device on the position feedback circuit board is a magnetic field sensing device.

Furthermore, the shell consists of an upper shell and a lower shell which are connected and matched to form a built-in cavity.

Further, the rotating main shaft vertically penetrates through the lower shell from the outside of the lower shell and is rotatably fixed on the lower shell through matching with the shaft steel sleeve; the rotating main shaft is connected with a position feedback magnetic steel assembly at the top end of the inner shell, and an eccentric ball head is arranged at the top end of the other side of the rotating main shaft.

Furthermore, the rotor assembly is connected with the rotating main shaft and then is positioned in a concentric hole formed after the stator assembly is connected with the lower shell; the rotor assembly and the stator assembly are respectively provided with a bolt; the rotor assembly and the stator assembly are connected through a return spring mounted on the bolt.

Further, the coil assembly is connected with the stator assembly and fixed on the lower shell; and the outgoing line of the coil assembly is welded on the position feedback circuit board.

Furthermore, the outgoing line assembly is positioned on the side surface of the lower shell and consists of an outgoing line adapter and an external line assembly; the outgoing line adapter is connected with the external line assembly.

The utility model provides a diesel engine VP rotor pump is with electronic governor's electromagnetic actuator through addding feedback scheme subassembly and temperature measuring device, has richened the control strategy, has improved electromagnetic actuator's control function.

Drawings

The invention is further described with reference to the following drawings and detailed description.

FIG. 1 is a schematic diagram of the internal structure of the present electromagnetic actuator;

FIG. 2 is a right structural view of the present electromagnetic actuator;

FIG. 3 is a schematic top view of the present electromagnetic actuator;

FIG. 4 is a schematic bottom view of the electromagnetic actuator;

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1, the internal structure of the present electromagnetic actuator is schematically shown. As can be seen from the figure, the electromagnetic actuator is a main body of the whole electromagnetic actuator, which is composed of an upper shell 1 and a lower shell 3, wherein the upper shell 1 and the lower shell 3 are connected to form a built-in cavity, and other components are arranged in the built-in cavity.

The specific configurations of the upper housing 1 and the lower housing 3 may be stabilized according to actual requirements, and are not limited herein.

The built-in cavity formed by the upper shell 1 and the lower shell 3 comprises a temperature measuring device 2, a coil assembly 4, a position feedback mechanism, a return spring 8, a rotor assembly 9, a stator assembly 10, a shaft steel sleeve 11 and a rotating main shaft 12.

Specifically, the rotation main shaft 12 vertically penetrates the lower housing 3 from the outside thereof. And is rotatably arranged in the lower shell 3 in a way of matching with a shaft steel sleeve 11 in the shell. A rotor assembly 9 is arranged inside the shell and positioned at one side of the rotating main shaft 12 inside the shell; meanwhile, the stator assembly 10, which is engaged with the rotor assembly 9, is installed at the lower housing 3 with respect to the rotor assembly.

Rotor subassembly 9 and stator module 10 are equipped with the bolt respectively, and two sets of reset spring 8 assemble respectively on the bolt of rotor subassembly 9 and stator module 10, link together rotor subassembly 9 and stator module 10 through two sets of reset spring 8. The return spring 8 here is preferably a tension spring for generating a return force.

An eccentric ball head 13 is arranged at the top end of the rotating main shaft, which is positioned outside the shell, the eccentric ball head 13 can rotate along with the rotating main shaft 12 to form certain linear displacement output for accurately controlling the displacement of an oil supply sliding sleeve of the oil pump, thereby accurately controlling the oil supply quantity of the oil pump.

The coil assembly 4 is assembled with the stator assembly 10 and fixed on the lower housing 3, and the outgoing line of the coil assembly 4 is soldered on the feedback sensor circuit board 5.

When the electromagnetic actuator outputs externally, the rotating main shaft 12 generates magnetic force due to the change of a magnetic field when the coil assembly 4 on the external given sub-assembly 10 is charged, the rotor assembly 9 is driven to rotate in the stator assembly 10 and drives the rotating main shaft 12 to rotate, and the eccentric bulb 13 on the rotating main shaft 12 generates linear displacement, so that the oil supply sliding sleeve on the oil pump is driven to act to realize the control of oil supply and oil reduction.

The position feedback mechanism is composed of a position feedback circuit board component 5 and a position feedback magnetic steel component 7. The measuring device on the position feedback circuit board assembly 5 is a magnetic field sensing device, and the position feedback circuit board assembly 5 is fixedly arranged above the stator assembly 10 through a connecting column; the position feedback magnetic steel component 7 is arranged at the top end of a rotating main shaft 12 in the shell. The position feedback circuit board component 5 and the position feedback magnetic steel component 7 on the rotating main shaft 12 keep a certain gap.

The position feedback magnetic steel component 7 can rotate along with the movement of the rotating main shaft 12, so that a magnetic field around the magnetic steel deviates, the deviation quantity generates an electric signal after measurement operation is carried out on the position feedback circuit board component 5 which is arranged oppositely, and the position feedback signal is outwards output to a control system of the electronic speed regulator through the wire outlet component to represent different rotating positions of the rotating main shaft 12, and the control is carried out according to different control strategies.

The temperature measuring device 2 is arranged on the position feedback circuit board assembly 5, namely used for measuring the temperature of fuel entering the electromagnetic actuator.

Referring to fig. 2-4, after the electromagnetic actuator and the VP pump are integrally installed, when the electromagnetic actuator and the VP pump are operated, high-pressure fuel generated in the pump body enters the electromagnetic actuator through a hole in the filtering magnetic steel 16 disposed outside the casing, and returns to the fuel tank through the oil return hole device 6 installed on the side wall of the upper casing to circulate. The temperature measuring device 2 measures the temperature of fuel oil in the electromagnetic actuator and outputs the value to a control system of the electronic speed regulator through the wire outlet assembly, so that the control system carries out correction control on the oil supply quantity according to different control measurements.

The outlet assembly composed of the outlet adapter 14 and the external wiring assembly 15 is fixed on the side surface of the lower housing 3. All electrical connecting wires in the product are welded on the position feedback circuit board 5, are distributed through an internal printed circuit of the position feedback circuit board 5, are led out to the outside after being switched through the wire outlet assembly and are used as electrical connection for the work of the product.

The operation of the present electromagnetic actuator is exemplified below.

When a control system in the electronic speed regulator supplies power to an internal coil assembly 4 through an external wiring assembly 15 and an outgoing line adapter 14, a magnetic field is generated between a stator assembly 10 and a rotor assembly 9, the rotor assembly 9 is driven to rotate under the action of a return spring 8, so that a rotating main shaft 12 fixed on the rotor assembly 9 is driven to move, and an eccentric bulb 13 at the output end of the rotating main shaft 12 moves along with the rotating main shaft to generate certain output displacement so as to drive an oil supply sliding sleeve on a VP pump to perform oiling action; when the power supply is weakened and the electromagnetic force is reduced or disappears, the rotor assembly 9 drives the oil supply sliding sleeve on the VP pump to reduce oil until the operation of stopping the machine under the action of the return spring 8. And the movement of the rotating main shaft 12 drives the oil supply sliding sleeve of the fuel injection pump VP pump of the diesel engine to generate certain linear displacement, so that the oil supply quantity of the fuel injection pump is adjusted, and the aim of finally controlling the rotating speed of the diesel engine is fulfilled.

When the rotating main shaft 12 rotates, the position feedback magnetic steel component 7 correspondingly rotates, and the generated magnetic field offset is measured through the position feedback circuit board component 5 arranged oppositely and then is output to a control system of the electronic speed regulator; when fuel oil circulates in the actuator, the temperature is measured through the temperature measuring device 2 arranged on the position feedback circuit board assembly 5 and is output to a control system of the electronic speed regulator. The control system controls or corrects the output position of an electromagnetic actuator of the electronic speed regulator by measuring the rotating position and the fuel temperature according to the requirements of a control strategy, so that the oil supply quantity of the oil injection pump is adjusted, and the aim of finally controlling the rotating speed of the diesel engine is fulfilled.

The utility model provides a pair of electronic governor's electromagnetic actuator for diesel engine VP rotor pump, it is through increasing position feedback mechanism and temperature measuring device in that the device is inside, can realize abundant control strategy, like external characteristic mark, have the characteristic to mark, the oil mass based on the temperature revises etc. has promoted electromagnetic actuator's control function to make the emission index of the VP pump diesel engine of using this system can satisfy the requirement of state VI.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electromagnetic actuator of an electronic speed regulator for a VP rotor pump of a diesel engine comprises a shell, a rotating main shaft, a coil assembly, a return spring assembly, a rotor assembly, a stator assembly and a shaft steel sleeve, wherein the coil assembly, the return spring assembly, the rotor assembly, the stator assembly and the shaft steel sleeve are positioned in the shell; the eccentric ball head and the wire outlet assembly are positioned outside the shell; the device is characterized by also comprising a position feedback mechanism and a temperature measuring device; the temperature measuring device is mounted on the position feedback mechanism.

2. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 1, wherein the position feedback mechanism is fixed above the stator assembly in the shell; the position feedback mechanism consists of a position feedback circuit board component and a position feedback magnetic steel component; the position feedback magnetic steel assembly is arranged on the rotating main shaft; the position feedback circuit board assembly is arranged on the stator assembly.

3. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 1, wherein the measuring device on the position feedback circuit board is a magnetic field sensing device.

4. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 1, wherein the housing is composed of an upper housing and a lower housing, and the upper housing and the lower housing are connected and matched to form an internal cavity.

5. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 4, wherein the rotating main shaft vertically penetrates through the housing from the outside of the lower housing and is rotatably fixed on the lower housing by matching with the shaft steel sleeve; the rotating main shaft is connected with a position feedback magnetic steel assembly at the top end of the inner shell, and an eccentric ball head is arranged at the top end of the other side of the rotating main shaft.

6. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 4, wherein the rotor assembly is positioned in a concentric hole formed after the stator assembly is connected with the lower shell after being connected with the rotating main shaft; the rotor assembly and the stator assembly are respectively provided with a bolt; the rotor assembly and the stator assembly are connected through a return spring mounted on the bolt.

7. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 4, wherein the coil assembly is connected to the stator assembly and fixed on the lower shell; and the outgoing line of the coil assembly is welded on the position feedback circuit board.

8. The electromagnetic actuator of the electronic speed regulator for the VP rotor pump of the diesel engine as claimed in claim 4, wherein the outlet assembly is located on the side surface of the lower shell and is composed of an outlet adapter and an external connection assembly; the outgoing line adapter is connected with the external line assembly.