CN201461173U - Electronically controlled combination pump for fuel injection system of diesel - Google Patents
Electronically controlled combination pump for fuel injection system of diesel Download PDFInfo
- Publication number
- CN201461173U CN201461173U CN2009200925064U CN200920092506U CN201461173U CN 201461173 U CN201461173 U CN 201461173U CN 2009200925064 U CN2009200925064 U CN 2009200925064U CN 200920092506 U CN200920092506 U CN 200920092506U CN 201461173 U CN201461173 U CN 201461173U
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- pump
- plunger
- pump chamber
- electronically controlled
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Abstract
An electronically controlled combination pump for a fuel injection system of a diesel comprises a pump body, a pump chamber, two O-shaped seal rings, a plunger piston, a plunger spring, a spring lower seat, a roller body assembly and a camshaft. The camshaft is mounted in the lower chamber of the pump chamber; the roller body assembly is mounted in a cylinder hole of the pump chamber; the spring lower seat and the plunger spring are sleeved in the tail part of the plunger piston; then the plunger piston is inserted in a plunger hole of the pump body; the two O-shaped seal rings are mounted in the corresponding grooves of the pump body; and finally, the whole part is inserted into the cylinder hole of the pump chamber. The cylinder centre distance A between two adjacent cylinders in the pump chamber is set to 48 mm plus or minus 0.1 mm, the cylinder diameter B is Phi 36 mm plus 0.025 m, the plunger stroke C is 14 mm plus or minus 0.1 mm, and the height D of the pump chamber is 150 mm plus or minus 0.1 mm. Under the premise that the working capacity of an electronically controlled pump is kept unchanged, the dimensions of important components are reduced. Therefore, the utility model has the advantage that the volume and the cost of the electronically controlled pump are greatly reduced, thereby especially suiting the operating requirements of medium power diesel engines.
Description
(1) technical field:
The utility model belongs to field of internal combustion engine, relates to a kind of automatically controlled unipump of diesel fuel injection system.
(2) background technique:
At present, the widely used mechanically controlled type structure of China fuel of internal combustion engine system industry Injection Pump improves the Injection Pump ability to work with the method that improves jet pressure.Along with the Europe III Abgasgesetz general implementation of field of internal combustion engine at home and abroad, prior art can not satisfy the usability of internal-combustion engine, in order further to improve power character, the Economy of vehicle, no matter be that oil-fired system on petrol engine or the diesel engine all promptly develops to the direction of automatically controlledization, to realize the optiumum control and the adjusting of jet pressure, fuel injection quantity, beginning of injection, fuel injection rate etc.
The numerous domestic MANUFACTURER all is the ability to work that improves Injection Pump by increase plunger stroke, cylinder core distance in order to expand the using scope of its automatically controlled pump basically, has increased the volume and weight of product.
(3) model utility content:
The purpose of this utility model is to provide the automatically controlled unipump of the diesel fuel injection system that a kind of rational in infrastructure, volume and weight reduces.
The utility model can achieve the above object with following technological scheme: the automatically controlled unipump of diesel fuel injection system comprises the pump housing, pump chamber, O-ring seals, plunger, piston spring, spring lower seat, roller body assembly, camshaft.Camshaft is packed in the cavity of resorption of pump chamber, the roller body assembly of in the cylinder hole of pump chamber, packing into, be inserted in spring lower seat, piston spring in plunger tail, then plunger is inserted in the plunger hole of the pump housing, two O-ring seals are installed in the respective grooves of the pump housing last whole again being inserted in the cylinder hole of pump chamber.
Adjacent cylinder core distance A is set at 48mm ± 0.1mm in the pump chamber, and cylinder diameter B is φ 36mm+0.025mm, and plunger stroke C is 14mm ± 0.1mm, and pump chamber height D is 150mm ± 0.1mm.
The utility model can reach following good effect:
Satisfying under the constant prerequisite of automatically controlled pumpage, owing to reducing of important spare part size, the volume and the cost of automatically controlled pump greatly reduce, and are more suitable in the usage requirement of mid power diesel engine.
(4) description of drawings:
Fig. 1 is the automatically controlled unipump structural representation of the utility model diesel fuel injection system.
(5) embodiment:
As shown in Figure 1, camshaft 9 is packed in the cavity of resorption of pump chamber 2, the roller body assembly 8 of in the cylinder hole of pump chamber 2, packing into, be inserted in spring lower seat 7, piston spring 6 at plunger 5 afterbodys, then plunger 5 is inserted in the plunger hole of the pump housing 1, O- ring seals 3,4 is installed in the respective grooves of the pump housing 1 last whole again being inserted in the cylinder hole of pump chamber 2.
Adjacent cylinder core distance A is set at 48mm ± 0.1mm in the pump chamber, and cylinder diameter B is φ 36mm+0.025mm, and plunger stroke C is 14mm ± 0.1mm, and pump chamber height D is 150mm ± 0.1mm.
The gear train drive cam shaft 9 that moves through of crankshaft of diesel engine is moved, camshaft 9 drives plunger 5 and does linear reciprocating motion, to realize that the pressurization .ECU ECU (Electrical Control Unit) of fuel oil is carried out electronic closed loop control to characteristics such as beginning of injection and injection durations, to reach the requirement of diesel engine Europe III emission performance.
Claims (2)
1. the automatically controlled unipump of a diesel fuel injection system comprises the pump housing (1), pump chamber (2), O-ring seals (3,4), plunger (5), piston spring (6), spring lower seat (7), roller body assembly (8), camshaft (9); It is characterized in that: camshaft (9) is packed in the cavity of resorption of pump chamber (2), the roller body assembly (8) of in the cylinder hole of pump chamber (2), packing into, be inserted in spring lower seat (7), piston spring (6) at plunger (5) afterbody, then plunger (5) is inserted in the plunger hole of the pump housing (1), O-ring seals (3,4) is installed in the respective grooves of the pump housing (1), and integral body is inserted in the cylinder hole of pump chamber (2) more at last.
2. the automatically controlled unipump of diesel fuel injection system according to claim 1, it is characterized in that: adjacent cylinder core distance A is set at 48mm ± 0.1mm in the pump chamber (2), cylinder diameter B is 36mm+0.025mm, and plunger stroke C is 14mm ± 0.1mm, and pump chamber height D is 150mm ± 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200925064U CN201461173U (en) | 2009-08-20 | 2009-08-20 | Electronically controlled combination pump for fuel injection system of diesel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200925064U CN201461173U (en) | 2009-08-20 | 2009-08-20 | Electronically controlled combination pump for fuel injection system of diesel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461173U true CN201461173U (en) | 2010-05-12 |
Family
ID=42388527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200925064U Expired - Fee Related CN201461173U (en) | 2009-08-20 | 2009-08-20 | Electronically controlled combination pump for fuel injection system of diesel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922391A (en) * | 2010-08-23 | 2010-12-22 | 亚新科南岳（衡阳）有限公司 | Fuel jet electronic combination unit pump of diesel engine |
-
2009
- 2009-08-20 CN CN2009200925064U patent/CN201461173U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922391A (en) * | 2010-08-23 | 2010-12-22 | 亚新科南岳（衡阳）有限公司 | Fuel jet electronic combination unit pump of diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FIRST TRACTOR CO., LTD. Free format text: FORMER OWNER: CHINA YITUO GROUP CO., LTD. Effective date: 20110728 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 471039 LUOYANG, HENAN PROVINCE TO: 471004 LUOYANG, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110728 Address after: 471004 Jianshe Road, Jianxi, Henan, No. 154, Patentee after: First Tractor Co., Ltd. Address before: 471039 No. 39, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: China Yituo Group Co., Ltd. |
|
| 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: 20100512 Termination date: 20170820 |