CN203023032U - PT (pressure time) fuel pump actuator - Google Patents
PT (pressure time) fuel pump actuator Download PDFInfo
- Publication number
- CN203023032U CN203023032U CN 201320015578 CN201320015578U CN203023032U CN 203023032 U CN203023032 U CN 203023032U CN 201320015578 CN201320015578 CN 201320015578 CN 201320015578 U CN201320015578 U CN 201320015578U CN 203023032 U CN203023032 U CN 203023032U
- Authority
- CN
- China
- Prior art keywords
- core
- bearing
- rotary core
- fuel pump
- controlling element
- 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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Abstract
The utility model relates to a PT (pressure time) fuel pump actuator which comprises an actuator base, a coil, a magnetic yoke, an elastic retainer ring, a bearing, a lower rotary core, an expansion core screw, an upper rotary core, an outer shell and a spring. The improvement is that the bearing is arranged on the upper rotary core; the lower rotary core and the upper rotary core are fixedly connected by the expansion core screw so as to form a rotary core component, and a bearing shaft on an original actuator base is removed. Compared with the prior art, the PT fuel pump actuator provided by the utility model is simple in structure, is convenient to install, can not be clamped because of eccentric installation, lowers the product comprehensive cost, and improves the production efficiency.
Description
Technical field
The utility model relates to a kind of PT fuel pump final controlling element on diesel engine, belongs to the final controlling element manufacturing technology.
Technical background
Final controlling element is an important controlling component of PT fuel pump on diesel engine, when the curent change of delivering to the final controlling element coil, torsion and the spring force disequilibrium that the magnetic field that coil produces changes, magnetic force produces, make the turning that core rotates of final controlling element and the openings of sizes of change oilhole and change fuel flow, reach the fuel flow that automatic adjusting enters nozzle, and then control engine keeps stabilization of speed under various operating modes, so guarantee that the flexibility that final controlling element turns core is crucial.Present final controlling element has two kinds: a kind of is single-column rotary core type final controlling element (U.S.'s product), and its shortcoming is that machining accuracy and matching requirements are high, and the phenomenon of eccentric hair fastener easily occurs; Another kind is for the easy hair fastener of single-column rotary core type final controlling element and improved universal hair style final controlling element, single-column is turned core is divided into three parts: under turn core, Universal-head, on turn core, use that the Universal-head principle solves that coaxality is difficult to ensure card and problem that eccentric hair fastener occurs, but its complex structure, increased the cost of processing and assembling.
The model utility content
For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of simple in structure, easy for installation, final controlling element of being difficult for eccentric hair fastener.
The technical solution of the utility model is: a kind of PT fuel pump final controlling element, comprise final controlling element base, coil, yoke, bearing, under turn core, the heart screw that rises, on turn core, outer cover, circlip and Returnning spring.Turn core on described and pass bearing hole and bearing is contained in turns on core, the heart screw that rises be fixedly connected with down turn core and on turn core and form and turn core assembly, turn core assembly and coordinate with outer cover formation, remove the bearing shaft on former base.
Final controlling element turn coordinating between core assembly and outer cover: bearing inner race and on turn core and form interference fit, form interference fit between bearing outer ring and outer cover, circlip with on turn core assembly and be placed in outer cover, the advantage of this structure is need not control the coaxality requirement when assembled product.
The utility model compared with prior art, beneficial effect is as follows:
1. remove the bearing shaft on former base, saved processing cost;
2. reduce the complexity of structure, conveniently installed, easily guaranteed assembly precision;
3. improved the problem because of the setting-up eccentricity hair fastener;
4. product overall cost of the present utility model is low, manufacturing efficiency is high.
Description of drawings
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
Accompanying drawing is structural representation of the present utility model.
Embodiment
As shown in the figure, a kind of PT fuel pump final controlling element, comprise final controlling element base 1, coil 2, yoke 3, under turn core 4, check ring 5, bearing 6, the core screw 7 that rises, on turn core 8, outer cover 9, Returnning spring 10.Coil 2 is fixed in the circular groove of base 1, yoke 3 is arranged on down the bottom that turns chip 5, bearing 4 be contained in turn on core 7 and for interference fit, by the heart screw 7 that rises be fixedly connected with down turn core 4 with on turn core 8 and form and turn core components, circlip 5 with on turn core assembly and be placed in outer cover 9 and be fixed on base again.When the electric current of actuator coil changes, the torsion that the magnetic field that coil produces changes, magnetic force produces and Returnning spring elastic force disequilibrium drive turn that core rotates and the openings of sizes of change oilhole and change fuel oil flow, reach the fuel flow that automatic adjusting enters nozzle.
Claims (2)
1. final controlling element, comprise final controlling element base (1), coil (2), yoke (3), under turn core (4), circlip (5), bearing (6), the heart screw (7) that rises, on turn core (8), outer cover (9) and Returnning spring (10), it is characterized in that: the heart screw that rises be fixedly connected with down turn core and on turn core and form and turn core assembly.
2. final controlling element according to claim 1, it is characterized in that: described bearing (6) is arranged on and turns (8) on core, bearing (6) inner ring and on turn core (8) and form interference fit, bearing (6) outer ring and outer cover (9) formation interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015578 CN203023032U (en) | 2013-01-11 | 2013-01-11 | PT (pressure time) fuel pump actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015578 CN203023032U (en) | 2013-01-11 | 2013-01-11 | PT (pressure time) fuel pump actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023032U true CN203023032U (en) | 2013-06-26 |
Family
ID=48647021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015578 Expired - Fee Related CN203023032U (en) | 2013-01-11 | 2013-01-11 | PT (pressure time) fuel pump actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023032U (en) |
-
2013
- 2013-01-11 CN CN 201320015578 patent/CN203023032U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chongqing Head Automation Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Chongqing Head Automation Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| 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: 20130626 Termination date: 20160111 |