CN203175735U - Rack position controller for mechanical fuel injection pump - Google Patents
Rack position controller for mechanical fuel injection pump Download PDFInfo
- Publication number
- CN203175735U CN203175735U CN 201320152451 CN201320152451U CN203175735U CN 203175735 U CN203175735 U CN 203175735U CN 201320152451 CN201320152451 CN 201320152451 CN 201320152451 U CN201320152451 U CN 201320152451U CN 203175735 U CN203175735 U CN 203175735U
- Authority
- CN
- China
- Prior art keywords
- push rod
- injection pump
- rack position
- position controller
- pump rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
The utility model relates to a rack position controller for a mechanical fuel injection pump. The controller is characterized by comprising a linear stepping motor, wherein the output end of the linear stepping motor is connected with a lead screw nut pair, the lead screw nut of which is fixedly connected with a push rod sleeved in the periphery of a lead screw shaft. The push rod is slidingly sleeved in a front shell, and the front end of the push rod is connected with a shutdown lever arm of an engine capable of controlling the rack position of the fuel injection pump. The controller provided by the utility model intelligently controls the fuel-injection quantity, so that the precision on fuel control is improved. The controller has the characteristics of reliability and precision in the adjustment of fuel-injection quantity of a mechanical pump type diesel engine and is easy to implement.
Description
Technical field:
The utility model relates to a kind of mechanical type injection pump rack position controller.
Background technique:
Prior mechanical injection pump rack position is mainly regulated the tooth bar position by parts such as fixed plate, foot treadle, lead-in wires by a series of mechanical transmission, parts such as lead-in wire wear and tear easily, and degree of regulation is low, is difficult to satisfy the emission request of raising day by day to the accurately requirement of control of mechanical type injection pump rack position.
Summary of the invention:
The purpose of this utility model is to provide a kind of mechanical type injection pump rack position controller, and this mechanical type injection pump rack position controller is simple in structure, reasonable in design, has characteristics reliable, accurate, that easily realize.
The utility model mechanical type injection pump rack position controller, it is characterized in that: comprise linear stepping motor, described linear stepping motor output terminal is connected with feed screw nut pair, the feed screw nut of described feed screw nut pair is fixedlyed connected with the push rod that is set in the screw axis periphery, described push rod slides and is nested with in front case, and the push rod front end is connected with the engine cut-off lever arm that can control the injection pump rack position.
Be provided be used to the copper sheathing that is nested with push rod in the above-mentioned front case front end body.
Also be provided with the spline pin that spacing push rod rotates that is used for that snaps in the peripheral keyway of push rod in the above-mentioned front case front end body.
Above-mentioned push rod front end periphery is connected with the connection pad, and described connection pad is connected with the tractive axle of linear displacement transducer.
Above-mentioned linear stepping motor is located in the rear cover body.
The utility model turns over certain angle by the screw axis of the linear stepping motor in the controller control actuating device, thereby the push rod that promotes the feed screw nut and be fixed on the nut produces straight line motion, owing to have keyway on the push rod, prevent that by the spline pin it from rotating, guarantee that push rod does the straight-line displacement campaign, and then by the position of the engine cut-off lever arm that is connected with push rod control injection pump rack, reach the purpose of control fuel injection quantity.
Simultaneously, push rod drives the straight-line displacement that the linear displacement transducer generation equates by connecting pad, linear displacement transducer is converted to electrical signal with this displacement and feeds back to controller, and control is compared according to feedback signal and with the location of instruction of push rod, and the position of push rod proofreaied and correct, realize closed loop control, thereby reach the purpose that the injection pump rack position is accurately controlled.The utility model is realized the intellectuality of fuel injection quantity control, has improved the validity of fuel-flow control, for the adjusting of the fuel injection quantity of mechanical pump formula diesel engine have reliably, accurately, the easy characteristics of realization.
It is as follows to the utlity model has remarkable advantage:
(1) adopts linear stepping motor, simplified the structure of driving mechanism.
(2) feed screw nut pair of linear stepping motor has auto-lock function, guarantees the stability of location, tooth bar position.
(3) adopt linear displacement transducer that the tooth bar position is directly measured, eliminated the influence of mechanical structure drive gap, can effectively improve locating accuracy.
(4) the utility model can be used as mechanical type injection pump rack position controller, thereby replaces traditional boom guy type accelerator device, realizes the accurate control of throttle.Also can be used for diesel oil starts double fuel to transform the accurate quantification control of fuel injection quantity.
Description of drawings:
Fig. 1 is organigram of the present utility model;
Fig. 2 is the utility model control principle figure.
Embodiment:
The utility model mechanical type injection pump rack position controller, comprise linear stepping motor 1, described linear stepping motor output terminal is connected with feed screw nut pair 2, the feed screw nut 201 of described feed screw nut pair 2 is fixedlyed connected with the push rod 3 that is set in screw axis 202 peripheries, described push rod 3 slides and is nested with in front case 4, and the push rod front end is connected with the engine cut-off lever arm 5 that can control the injection pump rack position.
In order to be conducive to the slip of push rod, be provided be used to the copper sheathing 6 that is nested with push rod 3 in the above-mentioned front case 4 front end bodies.
For better anti-throw-out lever rotates, also be provided with the spline pin 8 that spacing push rod rotates that is used for that snaps in the peripheral keyway 7 of push rod in the above-mentioned front case 4 front end bodies.
In order to feed back the stroke of push rod, above-mentioned push rod front end periphery is connected with and connects pad 9, and described connection pad 9 is connected with the tractive axle 11 of linear displacement transducer 10.
Above-mentioned linear stepping motor 1 is located in the rear cover body 13.
The utility model turns over certain angle by the screw axis 202 of the linear stepping motor in the controller control actuating device, thereby the push rod 3 that promotes feed screw nut 201 and be fixed on the nut produces straight line motion, owing to have keyway 7 on the push rod 3, prevent that by spline pin 8 it from rotating, guarantee that push rod does the straight-line displacement campaign, and then by the position of the engine cut-off lever arm that is connected with push rod 5 control injection pump racks, reach the purpose of control fuel injection quantity.
Simultaneously, push rod drives the straight-line displacement that the linear displacement transducer generation equates by connecting pad, linear displacement transducer 10 is converted to electrical signal with this displacement and feeds back to controller 12, and controller is compared according to feedback signal and with the location of instruction of push rod, and the position of push rod proofreaied and correct, realize closed loop control, thereby reach the purpose that the injection pump rack position is accurately controlled.The utility model is realized the intellectuality of fuel injection quantity control, has improved the validity of fuel-flow control, for the adjusting of the fuel injection quantity of mechanical pump formula diesel engine have reliably, accurately, the easy characteristics of realization.
It is as follows to the utlity model has remarkable advantage:
(1) adopts linear stepping motor, simplified the structure of driving mechanism.
(2) feed screw nut pair of linear stepping motor has auto-lock function, guarantees the stability of location, tooth bar position.
(3) adopt linear displacement transducer that the tooth bar position is directly measured, eliminated the influence of mechanical structure drive gap, can effectively improve locating accuracy.
(4) the utility model can be used as mechanical type injection pump rack position controller, thereby replaces traditional boom guy type accelerator device, realizes the accurate control of throttle.Also can be used for diesel oil starts double fuel to transform the accurate quantification control of fuel injection quantity.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (1)
1. mechanical type injection pump rack position controller, it is characterized in that: comprise linear stepping motor, described linear stepping motor output terminal is connected with feed screw nut pair, the feed screw nut of described feed screw nut pair is fixedlyed connected with the push rod that is set in the screw axis periphery, described push rod slides and is nested with in front case, and the push rod front end is connected with the engine cut-off lever arm that can control the injection pump rack position.
2. mechanical type injection pump rack position controller according to claim 1 is characterized in that: be provided be used to the copper sheathing that is nested with push rod in the described front case front end body.
3. mechanical type injection pump rack position controller according to claim 1 and 2 is characterized in that: also be provided with the spline pin that spacing push rod rotates that is used for that snaps in the peripheral keyway of push rod in the described front case front end body.
4. mechanical type injection pump rack position controller according to claim 3, it is characterized in that: described push rod front end periphery is connected with the connection pad, and described connection pad is connected with the tractive axle of linear displacement transducer.
5. mechanical type injection pump rack position controller according to claim 4, it is characterized in that: described linear stepping motor is located in the rear cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152451 CN203175735U (en) | 2013-03-30 | 2013-03-30 | Rack position controller for mechanical fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152451 CN203175735U (en) | 2013-03-30 | 2013-03-30 | Rack position controller for mechanical fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175735U true CN203175735U (en) | 2013-09-04 |
Family
ID=49072443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320152451 Expired - Fee Related CN203175735U (en) | 2013-03-30 | 2013-03-30 | Rack position controller for mechanical fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279945A (en) * | 2013-10-12 | 2015-01-14 | 上海工程技术大学 | Displacement sensor used for diesel engine oil pump rack |
-
2013
- 2013-03-30 CN CN 201320152451 patent/CN203175735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279945A (en) * | 2013-10-12 | 2015-01-14 | 上海工程技术大学 | Displacement sensor used for diesel engine oil pump rack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20180330 |