CN201050430Y - Isopiestically intensified fuel-injection pump for diesel engine - Google Patents
Isopiestically intensified fuel-injection pump for diesel engine Download PDFInfo
- Publication number
- CN201050430Y CN201050430Y CNU2007201246377U CN200720124637U CN201050430Y CN 201050430 Y CN201050430 Y CN 201050430Y CN U2007201246377 U CNU2007201246377 U CN U2007201246377U CN 200720124637 U CN200720124637 U CN 200720124637U CN 201050430 Y CN201050430 Y CN 201050430Y
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- CN
- China
- Prior art keywords
- injection pump
- fuel
- fuel delivery
- constant pressure
- diesel engine
- 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 - Lifetime
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Abstract
The utility model relates to a constant pressure and reinforced fuel injection pump for a diesel engine, which comprises a fuel injection pump body with a flange, plunger matching parts, a constant pressure fuel delivery valve component, a fuel regulating mechanism and a transmission mechanism. A steel ball type constant pressure fuel delivery valve is used on the constant pressure fuel delivery valve component which is composed of a fuel delivery upper seat, a fuel delivery lower seat and steel ball type valve components. The fuel delivery upper seat and the fuel delivery lower seat are connected together as a whole body through bolts; two set of steel ball type valve components are arranged between the fuel delivery upper seat and the fuel delivery lower seat to form a fuel delivery valve and a pressure reducing valve; the fuel delivery upper seat is also used as a fuel delivery joint; a fuel delivery duct on the top of the fuel delivery upper seat is connected directly with an external high pressure fuel pipe. The fuel delivery upper seat of the constant pressure fuel delivery valve component is connected with the fuel injection pump body through fastening bolts and presses the plunger matching parts closely in the fuel injection pump body. The fuel injection pump can reduce the possibility of the hole deformation in a plunger sleeve, so that the plunger sleeve can bear higher injection pressure; the reliability of the running of the fuel injection pump is increased, so that the fuel injection pump can adapt to the requirements of a diesel engine burning various light diesel oil and heavy oil with low viscosity.
Description
Technical field
The utility model belongs to Diesel Engine Technique Field, is specifically related to the improvement to the diesel engine fuel injecting pump structure.
Background technique
The reliability of diesel engine work depends on the reliability of Injection Pump work to a great extent.The traditional combustible substance of diesel engine is a diesel oil, and combustible substance is single, in recent years, can burning diesel oil, can become development of diesel trend by combusting heavy oil again, this structural behaviour to diesel injection pump has proposed higher requirement.
Existing common diesel injection pump, constant pressure delivery valve assembly and delivery connection are divided portion, by pump cover or alternate manner with delivery connection, constant pressure delivery valve assembly, plunger coupled parts, the pump housing compresses and be assembled into one, parts are more like this, are difficult for reaching high pressure sealing, for high rotating speed, the higher diesel engine of single cylinder rated power, under the high-speed motion of plunger, easily produce distortion, the especially distortion of plunger bushing mesopore of pump element, thereby influence the reliability of Injection Pump work.
Summary of the invention
The purpose of this utility model is the deficiency at the prior art existence, for adapting to cylinder diameter is
Rotating speed is 720r/min-1000r/min, single cylinder rated power is the diesel engine needs of 176kw-245kw, designs the isobaric Injection Pump of strengthening of a kind of use for diesel engine, strengthens the fit sealing degree of outlet valve and plunger coupled parts, the pump housing, reduce the distortion of plunger bushing, improve the reliability of Injection Pump work.
The technical solution of the utility model is as follows:
The isobaric Injection Pump of strengthening of this use for diesel engine includes flanged (FLGD) fuel injection pump housing, plunger coupled parts, constant pressure delivery valve assembly, oil amount regulating mechanism and driving mechanism.Wherein, the constant pressure delivery valve assembly adopts the steel ball type constant pressure delivery valve, constitute by the outlet valve seat of honour, fuel-displaced lower valve seat and steel ball type valve assembly, the outlet valve seat of honour and fuel-displaced lower valve seat connect as one by screw, two cover steel ball type valve assemblys are installed between the outlet valve seat of honour and the fuel-displaced lower valve seat, form fuel tap and reduction valve, outlet valve seat of honour double as delivery connection, the oil road at top directly connect outside high-pressure oil pipe.The outlet valve seat of honour of constant pressure delivery valve assembly is connected with fuel injection pump housing by clamping bolt, and plunger coupled parts is pressed in the fuel injection pump housing.This structure has been saved pump cover, delivery connection and gasket seal etc., parts reduce, and fit sealing is become be easier to, and are more reliable, can reduce the especially distortion of plunger bushing mesopore of oil pump element to greatest extent, thereby guarantee the reliability that injection pump plunger is worked under high rotary speed movement.
The plunger diameter of the plunger coupled parts of this Injection Pump is
Ram lift is 20mm, and the pressure lubrication oil duct is arranged on the plunger, and the oil leab of transmission part inserts from pump housing bottom in addition, and is sealed by the O RunddichtringO on the installing and locating flanged surface, to obtain better lubrication effect.
The oil amount regulating mechanism of this Injection Pump adopts the driving lever rotating manner, has the groove that fuel-flow control was put through in the fuel injection pump housing bottom.
Improve by said structure, this Injection Pump can reduce the possibility of bore deformation in the plunger bushing, make it can bear higher jet pressure, improve the reliability of Injection Pump work, be its needs that can adapt to all kinds of Diesel oils of diesel combustion and low viscosity heavy oil, maximum how much fuel deliveries can reach 5320mm
3/ circulation.The outlet valve and the reduction valve of constant pressure delivery valve assembly are steel ball type, and outlet valve is double makees fuel-displaced joint, and stability is better in the course of the work to make the constant pressure delivery valve assembly, and reliability is also than the General System height.At pump housing bottom fluting, to be convenient to oil amount regulating mechanism and to carry out the fuel delivery adjusting, the design of oil leab can guarantee better lubrication effect on plunger coupled parts and the transmission part.
This Injection Pump is a HP3300 series, is used in cylinder diameter to be
Stroke is that 300mm, single cylinder rated power are 176kw-245kw, and rotating speed is on the diesel engine of 720r/min-1000r/min.
Description of drawings
Fig. 1 is the sectional structure chart of this Injection Pump;
Fig. 2 is the sectional structure chart of another direction of this Injection Pump;
Fig. 3 is the outline drawing of this Injection Pump.
Embodiment
Referring to Fig. 1 and Fig. 2, this Injection Pump includes constituent elements such as flanged (FLGD) oil jet pump body 3, plunger coupled parts 5, outlet valve assembly 2, driving mechanism 7, oil amount regulating mechanism 13.
Wherein, the constant pressure delivery valve assembly adopts the steel ball type constant pressure delivery valve, the outlet valve seat of honour 11 double as delivery connections, the top directly connects high-pressure oil pipe by oil road 9, the outlet valve seat of honour 11 is connected with fuel-displaced lower valve seat 12 usefulness round head bolts 4, the middle two cover steel ball type valve assemblys 10 of installing form fuel tap and reduction valve.The outlet valve seat of honour 11 is connected with fuel injection pump housing 3 by powerful clamping bolt 1, and plunger coupled parts 5 is pressed in the fuel injection pump housing 1, reaches rigidity means of press seals and fixing.
The plunger diameter of plunger coupled parts 5
Ram lift is 20mm, and pressure lubrication oil duct 16 is arranged on the plunger.The oil leab 8 of transmission part 7 inserts from pump housing bottom, and is sealed by the O RunddichtringO on the installing and locating flanged surface.Oil amount regulating mechanism 13 adopts the driving lever rotating manner, has the groove 14 that fuel-flow control was put through in fuel injection pump housing 3 bottoms.
Referring to Fig. 3, fuel injection pump housing top A is designed to circle, and bottom B is circular band roller structure.
Claims (5)
1. the isobaric Injection Pump of strengthening of use for diesel engine includes flanged (FLGD) fuel injection pump housing, plunger coupled parts, constant pressure delivery valve assembly, oil amount regulating mechanism and driving mechanism; It is characterized in that: the constant pressure delivery valve assembly adopts the steel ball type constant pressure delivery valve, constitute by the outlet valve seat of honour, fuel-displaced lower valve seat and steel ball type valve assembly, the outlet valve seat of honour and fuel-displaced lower valve seat connect as one by screw, two cover steel ball type valve assemblys are installed between the outlet valve seat of honour and the fuel-displaced lower valve seat, form fuel tap and reduction valve, outlet valve seat of honour double as delivery connection, the oil road at its top directly connect outside high-pressure oil pipe; The outlet valve seat of honour of constant pressure delivery valve assembly is connected with fuel injection pump housing by clamping bolt, and plunger coupled parts is pressed in the fuel injection pump housing.
2. the isobaric Injection Pump of strengthening of use for diesel engine according to claim 1 is characterized in that the plunger diameter of described plunger coupled parts
Ram lift is 20mm, and the pressure lubrication oil duct is arranged on the plunger.
3. the isobaric Injection Pump of strengthening of use for diesel engine according to claim 1 and 2, it is characterized in that: the oil leab of transmission part inserts from pump housing bottom.
4. the isobaric Injection Pump of strengthening of use for diesel engine according to claim 3, it is characterized in that: oil amount regulating mechanism is a driving lever rotary type controlling mechanism, has the groove that driving lever passes through in the fuel injection pump housing bottom.
5. the isobaric Injection Pump of strengthening of use for diesel engine according to claim 4 is characterized in that: fuel injection pump housing top is for circular, and the bottom is circular band roller structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201246377U CN201050430Y (en) | 2007-06-30 | 2007-06-30 | Isopiestically intensified fuel-injection pump for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201246377U CN201050430Y (en) | 2007-06-30 | 2007-06-30 | Isopiestically intensified fuel-injection pump for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050430Y true CN201050430Y (en) | 2008-04-23 |
Family
ID=39336916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201246377U Expired - Lifetime CN201050430Y (en) | 2007-06-30 | 2007-06-30 | Isopiestically intensified fuel-injection pump for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050430Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845542A (en) * | 2010-03-02 | 2010-09-29 | 麦格思维特(上海)流体工程有限公司 | High-pressure oil pipe strengthening device |
| CN104204502A (en) * | 2012-03-16 | 2014-12-10 | 三菱重工业株式会社 | Fuel injection pump |
| CN110062846A (en) * | 2016-12-13 | 2019-07-26 | 三菱重工业株式会社 | Fuel-injection pump, fuel injection device, internal combustion engine |
-
2007
- 2007-06-30 CN CNU2007201246377U patent/CN201050430Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845542A (en) * | 2010-03-02 | 2010-09-29 | 麦格思维特(上海)流体工程有限公司 | High-pressure oil pipe strengthening device |
| CN101845542B (en) * | 2010-03-02 | 2011-12-28 | 麦格思维特(上海)流体工程有限公司 | High-pressure oil pipe strengthening device |
| CN104204502A (en) * | 2012-03-16 | 2014-12-10 | 三菱重工业株式会社 | Fuel injection pump |
| CN110062846A (en) * | 2016-12-13 | 2019-07-26 | 三菱重工业株式会社 | Fuel-injection pump, fuel injection device, internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHONGQING HONGJIANG MACHINE CO., LTD. Free format text: FORMER NAME OR ADDRESS: HONGJIANG MACHINERY FACTORY, CHONGQING |
|
| CP03 | Change of name, title or address |
Address after: No. 190 Qingcheng Road, Yongchuan District, Chongqing, China: 402162 Patentee after: Chongqing Hongjiang Machinery Co., Ltd. Address before: Third Chongqing Road, Yongchuan District No. 404, zip code: 402162 Patentee before: Chongqing Hongjiang Machine Works |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Third Chongqing Road, Yongchuan District No. 404, zip code: 402162 Patentee after: Chongqing Hongjiang Machinery Co., Ltd. Address before: No. 190 Qingcheng Road, Yongchuan District, Chongqing, China: 402162 Patentee before: Chongqing Hongjiang Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080423 |
|
| CX01 | Expiry of patent term |