CN103670858A - Diesel engine fuel supply system with structure improved - Google Patents
Diesel engine fuel supply system with structure improved Download PDFInfo
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- CN103670858A CN103670858A CN201210314088.5A CN201210314088A CN103670858A CN 103670858 A CN103670858 A CN 103670858A CN 201210314088 A CN201210314088 A CN 201210314088A CN 103670858 A CN103670858 A CN 103670858A
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- pressure chamber
- fuel
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- diesel engine
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Abstract
The invention discloses a diesel engine fuel supply system with the structure improved. The system comprises a fuel tank, a fuel feeding pump, a filter and a fuel injection pump, wherein the fuel tank, the fuel feeding pump, the filter and the fuel injection pump are connected through pipelines, an electromagnetic valve is arranged between the filter and the fuel injection pump, a fuel injection nozzle is arranged on the fuel injection pump and comprises a needle valve body and a needle valve, the needle valve body is composed of a body and an end body, an upper pressure chamber, a middle pressure chamber and a lower pressure chamber which are communicated in sequence are arranged in the end body, the upper pressure chamber and the lower pressure chamber are of a frustum-shaped structure, the middle pressure chamber is of an annular structure, the needle valve is arranged in the needle valve body, the head of the needle valve is of a frustum-shaped structure, the frustum-shaped structure head of the needle valve is matched with the upper pressure chamber and the lower pressure chamber, and a ball table is further arranged on the frustum-shaped head of the needle valve. According to the system, not only is the size of the pressure chambers reduced, but also fuel atomization uniformity is improved, fuel can be combusted fully, the oil drip phenomenon is avoided, energy is saved, over-speed rotation of an engine caused by out-of-control oil supply is avoided, the engine is protected, and the environment is protected.
Description
Technical field
The present invention relates to a kind of fuel system for diesel engine, espespecially relate to a kind of fuel system for diesel engine of architecture advances.
Background technique
Common diesel engine often occur causing because rotating speed is too fast outlet pipe emerge a large amount of black smokes situation and occur dripping an oil condition, the severe contamination that this just causes surrounding environment wastes energy simultaneously, also can cause the damage of motor even to occur explosion risk.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of fuel system for diesel engine of architecture advances, the fuel system for diesel engine engine speed of this architecture advances is stable; fuel-oil atmozation is even, has avoided oil dripping phenomenon, has protected environment; save the energy, extended service life of aeroengine.
The present invention for the technological scheme that solves its technical problem and adopt is: a kind of fuel system for diesel engine of architecture advances, comprise fuel tank, fuel circulating pump, filter cleaner and Injection Pump, described fuel tank, fuel circulating pump, filter cleaner is connected by pipeline with Injection Pump, pipeline between filter cleaner and Injection Pump is provided with solenoid valve, Injection Pump is provided with oil nozzle, described oil nozzle comprises needle-valve body and needle-valve, described needle-valve body is comprised of body and end body, in end body, be provided be connected successively upper, in, downforce chamber, wherein go up, downforce chamber is cone table shape structure, middle pressure chamber is cirque structure, described needle-valve is located in needle-valve body, the head of needle-valve is the cone table shape structure of mating with upper and lower pressure chamber, on the cone table shape head of described needle-valve, be also provided with billiard table.
As a further improvement on the present invention, described solenoid valve is provided with over speed switch.
As a further improvement on the present invention, described downforce chamber is provided with some pits near the sidewall of middle pressure chamber.
As a further improvement on the present invention, compare for 4:3 away from middle pressure chamber one side diameter and the diameter of downforce chamber away from middle pressure chamber one side described upward pressure chamber.
As a further improvement on the present invention, on described needle-valve, the diameter of cone table shape structure and the diameter of billiard table ratio are 4:3.
As a further improvement on the present invention, in described middle pressure chamber, be provided with some guiding gutters.
The invention has the beneficial effects as follows: the present invention is by being divided into upper, middle and lower San Ge pressure chamber by needle-valve body internal pressure chamber, and on the sidewall of top, downforce chamber, bowl configurations is set, both saved the volume of pressure chamber, improved again combustion oil atomization uniformity, fuel oil is fully burnt, the oil dripping phenomenon of avoiding, saved the energy, by over speed switch is set on solenoid valve, when engine speed surpasses setting value, switch is opened automatically, avoid motor because fuel feeding is out of control, to cause overspeed rotation, protected motor, over-emitting black exhaust while having avoided its work, protected environment, improved motor safety in utilization.
Accompanying drawing explanation
Fig. 1 is oil supply system oil circuit figure of the present invention;
Fig. 2 is oil nozzle structural principle schematic diagram of the present invention;
Fig. 3 is downforce chamber sidewall structure schematic diagram.
Embodiment
Embodiment: a kind of fuel system for diesel engine of architecture advances, comprise fuel tank 1, fuel circulating pump 2, filter cleaner 3 and Injection Pump 5, described fuel tank 1, fuel circulating pump 2, filter cleaner 3 is connected by pipeline with Injection Pump 5, pipeline 9 between filter cleaner 3 and Injection Pump 5 is provided with solenoid valve 4, Injection Pump 5 is provided with oil nozzle 6, described oil nozzle 6 comprises needle-valve body 7 and needle-valve 8, described needle-valve body 7 is comprised of body and end body, in end body, be provided be connected successively upper, in, downforce chamber 11, 12, 13, wherein go up, downforce chamber 13 is cone table shape structure, middle pressure chamber 12 is cirque structure, described needle-valve 8 is located in needle-valve body 7, the head of needle-valve 8 is the cone table shape structure of mating with upper and lower pressure chamber 13, on the cone table shape head of described needle-valve 8, be also provided with billiard table, this structure had both been saved the volume of pressure chamber, improved again combustion oil atomization uniformity, fuel oil is fully burnt, the oil dripping phenomenon of avoiding, saved the energy, avoided environmental pollution and motor to damage.
Described solenoid valve 4 is provided with over speed switch 10, and when diesel engine speed is normal, this switch is closed, and when diesel engine speed surpasses setting value, switch disconnects, and keeps diesel engine normally to move, and prevents its hypervelocity.
Described downforce chamber 13 sidewalls near middle pressure chamber 12 are provided with some pits 14.
Compare for 4:3 away from middle pressure chamber 12 1 side diameters and the diameter of downforce chamber 13 away from middle pressure chamber 12 1 sides described upward pressure chamber 11.
On described needle-valve 8, the diameter of cone table shape structure and the diameter of billiard table are than being 4:3.
In described middle pressure chamber 12, be provided with some guiding gutters, guarantee fuel oil rapid flow, fully atomization.
Claims (6)
1. the fuel system for diesel engine of an architecture advances, comprise fuel tank (1), fuel circulating pump (2), filter cleaner (3) and Injection Pump (5), described fuel tank (1), fuel circulating pump (2), filter cleaner (3) is connected by pipeline with Injection Pump (5), pipeline (9) between filter cleaner (3) and Injection Pump (5) is provided with solenoid valve (4), Injection Pump (5) is provided with oil nozzle (6), it is characterized in that: described oil nozzle (6) comprises needle-valve body (7) and needle-valve (8), described needle-valve body (7) is comprised of body and end body, in end body, be provided be connected successively upper, in, downforce chamber (11, 12, 13), wherein go up, downforce chamber (13) is cone table shape structure, middle pressure chamber (12) is cirque structure, described needle-valve (8) is located in needle-valve body (7), the head of needle-valve (8) is the cone table shape structure of mating with upper and lower pressure chamber (13), on the cone table shape head of described needle-valve (8), be also provided with billiard table.
2. the fuel system for diesel engine of architecture advances as claimed in claim 1, is characterized in that: described solenoid valve (4) is provided with over speed switch (10).
3. the fuel system for diesel engine of architecture advances as claimed in claim 1, is characterized in that: described downforce chamber (13) is provided with some pits (14) near the sidewall of middle pressure chamber (12).
4. the fuel system for diesel engine of architecture advances as claimed in claim 1, is characterized in that: described upward pressure chamber (11) away from middle pressure chamber (12) one side diameters and downforce chamber (13) away from the diameter of middle pressure chamber (12) one sides than being 4:3.
5. the fuel system for diesel engine of architecture advances as claimed in claim 1, is characterized in that: the upper diameter of cone table shape structure of described needle-valve (8) and the diameter of billiard table are than being 4:3.
6. the fuel system for diesel engine of architecture advances as claimed in claim 1, is characterized in that: in described middle pressure chamber (12), be provided with some guiding gutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210314088.5A CN103670858A (en) | 2012-08-30 | 2012-08-30 | Diesel engine fuel supply system with structure improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210314088.5A CN103670858A (en) | 2012-08-30 | 2012-08-30 | Diesel engine fuel supply system with structure improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670858A true CN103670858A (en) | 2014-03-26 |
Family
ID=50309433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210314088.5A Pending CN103670858A (en) | 2012-08-30 | 2012-08-30 | Diesel engine fuel supply system with structure improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670858A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829190A1 (en) * | 1978-03-29 | 1979-10-04 | Friedmann & Maier Ag | FUEL INJECTION DEVICE FOR INJECTION COMBUSTION MACHINES |
| WO1998005858A1 (en) * | 1996-08-07 | 1998-02-12 | Froment Jean Louis | Device for enhancing fuel injection dynamics in diesel engines fitted with pulsed-flow injection pumps |
| CN201679597U (en) * | 2010-03-16 | 2010-12-22 | 无锡市吉通机电技术开发有限责任公司 | Diesel engine oil supply system |
| US20110315118A1 (en) * | 2010-06-29 | 2011-12-29 | Caterpillar, Inc. | System and Method for Cooling Fuel Injectors |
| CN102392772A (en) * | 2011-12-10 | 2012-03-28 | 常州常瑞天力动力机械有限公司 | Oil nozzle of diesel engine |
| CN202360269U (en) * | 2011-12-10 | 2012-08-01 | 常州常瑞天力动力机械有限公司 | Needle valve of injection nozzle of diesel |
| CN202732183U (en) * | 2012-08-30 | 2013-02-13 | 昆山贝环电子技术服务有限公司 | Improved-structure diesel engine oil supply system |
| CN103573509A (en) * | 2012-07-18 | 2014-02-12 | 昆山康沃内燃机动力有限公司 | Structure improved diesel engine fuel supplying system |
-
2012
- 2012-08-30 CN CN201210314088.5A patent/CN103670858A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829190A1 (en) * | 1978-03-29 | 1979-10-04 | Friedmann & Maier Ag | FUEL INJECTION DEVICE FOR INJECTION COMBUSTION MACHINES |
| WO1998005858A1 (en) * | 1996-08-07 | 1998-02-12 | Froment Jean Louis | Device for enhancing fuel injection dynamics in diesel engines fitted with pulsed-flow injection pumps |
| CN201679597U (en) * | 2010-03-16 | 2010-12-22 | 无锡市吉通机电技术开发有限责任公司 | Diesel engine oil supply system |
| US20110315118A1 (en) * | 2010-06-29 | 2011-12-29 | Caterpillar, Inc. | System and Method for Cooling Fuel Injectors |
| CN102392772A (en) * | 2011-12-10 | 2012-03-28 | 常州常瑞天力动力机械有限公司 | Oil nozzle of diesel engine |
| CN202360269U (en) * | 2011-12-10 | 2012-08-01 | 常州常瑞天力动力机械有限公司 | Needle valve of injection nozzle of diesel |
| CN103573509A (en) * | 2012-07-18 | 2014-02-12 | 昆山康沃内燃机动力有限公司 | Structure improved diesel engine fuel supplying system |
| CN202732183U (en) * | 2012-08-30 | 2013-02-13 | 昆山贝环电子技术服务有限公司 | Improved-structure diesel engine oil supply system |
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Application publication date: 20140326 |