CN202707319U - Pump-pipe-valve-pipe-mouth fuel oil injection system - Google Patents
Pump-pipe-valve-pipe-mouth fuel oil injection system Download PDFInfo
- Publication number
- CN202707319U CN202707319U CN 201220380717 CN201220380717U CN202707319U CN 202707319 U CN202707319 U CN 202707319U CN 201220380717 CN201220380717 CN 201220380717 CN 201220380717 U CN201220380717 U CN 201220380717U CN 202707319 U CN202707319 U CN 202707319U
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- oil
- pipe
- pump
- pressure oil
- fuel
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- Expired - Fee Related
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Abstract
The utility model relates to a pump-pipe-valve-pipe-mouth fuel oil injection system, consisting of an oil tank, low pressure oil conveying pipes, a coarse filter, an oil conveying pump, a fine filter, an oil injection pump, six pump-end high pressure oil pipes, a fuel oil control electromagnetic valve, a mouth-end high pressure oil pipe, a mechanical oil injector and an ECU (Electronic Control Unit). The pump-pipe-valve-pipe-mouth fuel oil injection system is characterized in that the oil tank is connected with the coarse filter through the low pressure oil conveying pipe; the oil conveying pump is connected with the coarse filter and the fine filter through the low pressure oil conveying pipes; the fine filter is connected with the oil injection pump through the low pressure oil conveying pipe; the oil injection pump is connected with the six pump-end high pressure oil pipes; the pump-end high pressure oil pipes are connected with one end of the fuel oil control electromagnetic valve; the second end of the fuel oil control electronic valve is connected with the mouth-end high pressure oil pipe; the third end of the fuel oil control electromagnetic valve is connected with the low pressure oil conveying pipe; the mouth-end high pressure oil pipe is connected with the mechanical oil injector; an oil return pipe of the mechanical oil injector is connected with the low pressure oil conveying pipe, and then the oil return pipe and the low pressure oil conveying pipe return to the oil tank together; and the ECU is connected with the fuel oil control electromagnetic valve and the oil injection pump through data lines. Through the addition of the fuel oil control electromagnetic valve between the oil injection pump and the mechanical oil injector, the electromagnetic valve accepts instructions of the ECU for the connection or disconnection of the fuel oil; the mechanical oil injector is enabled to inject oil at the best moment, so that the oil injection pressure and the correct time of the system, and the discharge and the fuel oil economical efficiency of a diesel engine are improved; and therefore, two problems of lower average injection pressure and small range of correct time adjustment for oil injection are solved.
Description
Technical field
The utility model relates to a kind of pump-pipe-valve-pipe-mouth fuel injection system, belongs to the technical field of engine design, particularly a kind of fuel injection system of internal combustion engine.
Background technique
Domestic diesel engine much all adopts pump-pipe-mouth fuel injection system.Pump represents Injection Pump, pipe expression high-pressure oil pipe, and mouth represents the hydraulic injection device.The average injection pressure of pump-pipe-mouth fuel injection system is lower, and the injection timing regulation range is little.These two requirements that shortcoming usually makes diesel engine not reach Abgasgesetz make the fuel-economy type of diesel engine poor simultaneously.
Summary of the invention
The purpose of this utility model provides a kind of pump-pipe-valve-pipe-mouth fuel injection system, by between Injection Pump and hydraulic injection device, increasing a fuel oil control solenoid valve, this solenoid valve is accepted the instruction of ECU and is carried out the action of break-make fuel oil, guarantee that the hydraulic injection device is in the best time oil spout, thereby the injection pressure of system and timing and diesel emission and fuel economy are improved, solve average injection pressure lower, little these two problems of injection timing regulation range.
The technical solution of the utility model is achieved in that a kind of pump-pipe-valve-pipe-mouth fuel injection system, by fuel tank, low-pressure oil delivery pipe, strainer, oil transfer pump, the fine cleaner Injection Pump, pump end high-pressure oil pipe, fuel oil control solenoid valve, mouth end high-pressure oil pipe, hydraulic injection device and ECU form, and it is characterized in that: fuel tank is connected with strainer by low-pressure oil delivery pipe, and oil transfer pump connects strainer and fine cleaner by low-pressure oil delivery pipe, fine cleaner connects Injection Pump by low-pressure oil delivery pipe, Injection Pump connects six pump end high-pressure oil pipes, and pump end high-pressure oil pipe connects fuel oil control solenoid valve one end, fuel oil control solenoid valve the second end connection nipple end high-pressure oil pipe, fuel oil control solenoid valve the 3rd end connects low-pressure oil delivery pipe, mouth end high-pressure oil pipe is connected with the hydraulic injection device, the return tube of hydraulic injection device with together get back to fuel tank after low-pressure oil delivery pipe is connected, ECU connects fuel oil control solenoid valve and Injection Pump by datawire.
The tubing length of described mouth end high-pressure oil pipe is no more than 200mm.
Good effect of the present utility model is by increase a fuel oil control solenoid valve between Injection Pump and hydraulic injection device, this solenoid valve is accepted the instruction of ECU and is carried out the action of break-make fuel oil, guarantee that the hydraulic injection device is in the best time oil spout, thereby the injection pressure of system and timing and diesel emission and fuel economy are improved, solve average injection pressure lower, little these two problems of injection timing regulation range.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment: as shown in Figure 1, a kind of pump-pipe-valve-pipe-mouth fuel injection system, by fuel tank 1, low-pressure oil delivery pipe 2, strainer 3, oil transfer pump 4, fine cleaner 5 Injection Pumps 6, pump end high-pressure oil pipe 7, fuel oil control solenoid valve 8, mouth end high-pressure oil pipe 9, hydraulic injection device 10 and ECU11 form, it is characterized in that: fuel tank 1 is connected with strainer 3 by low-pressure oil delivery pipe 2, oil transfer pump 4 connects strainer 3 and fine cleaner 5 by low-pressure oil delivery pipe 2, fine cleaner 5 connects Injection Pump 6 by low-pressure oil delivery pipe 2, Injection Pump 6 connects six pump end high-pressure oil pipes 7, pump end high-pressure oil pipe 7 connects fuel oil control solenoid valve 8 one ends, fuel oil control solenoid valve 8 second end connection nipple end high-pressure oil pipes 9, fuel oil control solenoid valve 8 the 3rd end connects low-pressure oil delivery pipe 2, mouth end high-pressure oil pipe 9 is connected with hydraulic injection device 10, the return tube of hydraulic injection device 10 with together get back to fuel tank 1 after low-pressure oil delivery pipe 2 is connected, ECU 11 connects fuel oil control solenoid valve 8 and Injection Pump 6 by datawire.
The tubing length of described mouth end high-pressure oil pipe 9 is no more than 200mm.
Embodiment
As shown in Figure 1, fuel tank 1 provides low pressure diesel oil, gives Injection Pump 6 by low-pressure oil delivery pipe 2, strainer 3, oil transfer pump 4, fine cleaner 5.The instruction that Injection Pump 6 is accepted ECU11 becomes high pressure oil to low pressure oil by the action of pump oil.Fuel oil control solenoid valve 8 is accepted the instruction of ECU11 and is carried out the action of break-make the 3rd end low-pressure oil delivery pipe 2.When fuel oil control solenoid valve 8 was communicated with the 3rd end low-pressure oil delivery pipe 2, diesel oil was got back to fuel tank 1 by fuel oil control solenoid valve 8 and low-pressure oil delivery pipe 2; When motor needs oil spout, fuel oil control solenoid valve 8 disconnects the 3rd end low-pressure oil delivery pipe 2 in the Injection Pump 6 pumps oil higher moment of speed, Injection Pump 6 becomes high pressure oil to low pressure oil by the pump oil action that continues, the high pressure oil that middle pressure is higher enters hydraulic injection device 10 by fuel oil control solenoid valve 8 second ends and mouth end high-pressure oil pipe 9, hydraulic injection device 10 moves to the cylinder of diesel engine fuel feeding by oil spout, the instruction that fuel oil control solenoid valve 8 is accepted ECU11 is cut off the power supply when being communicated with the 3rd end low-pressure oil delivery pipe 2 again, the oil spout action of hydraulic injection device 10 stops end of injection.
Mouth end high-pressure oil pipe 9 length are no more than 200mm and have guaranteed that 8 energisings of fuel oil control solenoid valve disconnect action and the generation of hydraulic injection device 10 oil spouts action basic synchronization of the 3rd end low-pressure oil delivery pipe 2, have guaranteed that simultaneously 8 outages of fuel oil control solenoid valve are communicated with 2 actions of the 3rd end low-pressure oil delivery pipe and the 10 end oil spout actions of hydraulic injection device occur synchronously.
After adopting fuel oil control solenoid valve 8, the pump oil action of Injection Pump 6 and the oil spout action of hydraulic injection device 10 are independent mutually, thereby have increased the regulation range of injection timing.
A kind of pump-pipe-valve-pipe-mouth fuel oil sprays the regulation range that system has improved average injection pressure and increased injection timing, thus the fuel economy that reduces the diesel engine noxious gas emission and improved diesel engine.
Claims (2)
1. pump-pipe-valve-pipe-mouth fuel injection system, by fuel tank, low-pressure oil delivery pipe, strainer, oil transfer pump, the fine cleaner Injection Pump, pump end high-pressure oil pipe, fuel oil control solenoid valve, mouth end high-pressure oil pipe, hydraulic injection device and ECU form, and it is characterized in that: fuel tank is connected with strainer by low-pressure oil delivery pipe, and oil transfer pump connects strainer and fine cleaner by low-pressure oil delivery pipe, fine cleaner connects Injection Pump by low-pressure oil delivery pipe, Injection Pump connects six pump end high-pressure oil pipes, and pump end high-pressure oil pipe connects fuel oil control solenoid valve one end, fuel oil control solenoid valve the second end connection nipple end high-pressure oil pipe, fuel oil control solenoid valve the 3rd end connects low-pressure oil delivery pipe, mouth end high-pressure oil pipe is connected with the hydraulic injection device, the return tube of hydraulic injection device with together get back to fuel tank after low-pressure oil delivery pipe is connected, ECU connects fuel oil control solenoid valve and Injection Pump by datawire.
2. a kind of pump described in according to claim 1-pipe-valve-pipe-mouth fuel injection system is characterized in that the tubing length of described mouth end high-pressure oil pipe is no more than 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220380717 CN202707319U (en) | 2012-08-02 | 2012-08-02 | Pump-pipe-valve-pipe-mouth fuel oil injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220380717 CN202707319U (en) | 2012-08-02 | 2012-08-02 | Pump-pipe-valve-pipe-mouth fuel oil injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707319U true CN202707319U (en) | 2013-01-30 |
Family
ID=47587627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220380717 Expired - Fee Related CN202707319U (en) | 2012-08-02 | 2012-08-02 | Pump-pipe-valve-pipe-mouth fuel oil injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707319U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225574A (en) * | 2013-04-15 | 2013-07-31 | 华为技术有限公司 | Engine fuel system |
| CN109538389A (en) * | 2019-01-14 | 2019-03-29 | 天津亿科汽车电子有限公司 | A kind of dual fuel engine system and its control method based on mechanical oil pump feed |
| CN109882330A (en) * | 2019-03-19 | 2019-06-14 | 重庆喜恩动力机械有限公司 | Diesel engine integration oil pump nozzle independent oil injection structure |
| CN111022228A (en) * | 2019-12-24 | 2020-04-17 | 哈尔滨工程大学 | Double-oil-sprayer series-connection injection system and porous spray test system applying same |
| CN113503216A (en) * | 2021-08-25 | 2021-10-15 | 一汽解放汽车有限公司 | Diesel engine fuel supply system and testing method thereof |
-
2012
- 2012-08-02 CN CN 201220380717 patent/CN202707319U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225574A (en) * | 2013-04-15 | 2013-07-31 | 华为技术有限公司 | Engine fuel system |
| CN109538389A (en) * | 2019-01-14 | 2019-03-29 | 天津亿科汽车电子有限公司 | A kind of dual fuel engine system and its control method based on mechanical oil pump feed |
| CN109882330A (en) * | 2019-03-19 | 2019-06-14 | 重庆喜恩动力机械有限公司 | Diesel engine integration oil pump nozzle independent oil injection structure |
| CN111022228A (en) * | 2019-12-24 | 2020-04-17 | 哈尔滨工程大学 | Double-oil-sprayer series-connection injection system and porous spray test system applying same |
| CN113503216A (en) * | 2021-08-25 | 2021-10-15 | 一汽解放汽车有限公司 | Diesel engine fuel supply system and testing method thereof |
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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: 20130130 Termination date: 20200802 |