阅读说明：本技术 一种单缸共轨柴油机的分体式燃油供给系统 (A kind of split type fuel oil supply system of single cylinder common rail diesel engine ) 是由 姬仕强 孟亮虎 张祥臣 朱曦 于 2019-10-09 设计创作，主要内容包括：为了解决现有技术中单缸共轨机各部件需要悬挂单缸机上的问题,本发明提供一种单缸共轨柴油机的分体式燃油供给系统,包括燃油箱、低压燃油泵、油水分离机、燃油过滤器、高压燃油泵、高压燃油轨、共轨喷油器以及单缸共轨机；所述的低压燃油泵与燃油箱连接,用于供油；该低压燃油泵的输出端通过油水分离机进行油水分离,该油水分离机输出的燃油经过过滤器过滤后,输入到高压燃油泵进行二次加压后,依次输入到高压燃油轨、共轨喷油器后,为单缸共轨机供油。本发明结构紧凑、便于搬运、可独立完成作业无须外接设备、可长时间稳定运行、维修方便,同时共轨系统各部件不需要悬挂单缸机上,可独立放置,布置方便。(In order to solve the problems, such as that each component of single cylinder common rail machine needs to hang on single cylinder engine in the prior art, the present invention provides a kind of split type fuel oil supply system of single cylinder common rail diesel engine, including fuel tank, low-pressure fuel pump, oil-water separator, fuel oil filter, high pressure fuel pump, high pressure fuel rail, common-rail injector and single cylinder common rail machine；The low-pressure fuel pump is connect with fuel tank, is used for fuel feeding；The output end of the low-pressure fuel pump carries out water-oil separating by oil-water separator, the fuel oil of oil-water separator output is after filter filters, it is single cylinder common rail machine fuel feeding after being sequentially inputted to high pressure fuel rail, common-rail injector after being input to high pressure fuel pump progress secondary pressurized.Structure of the invention is compact, it is easy to carry, can complete independently operation without external equipment, can long-time steady operation, easy to maintenance, while each component of common rail system does not need independently place, arrangement is convenient on suspension single cylinder engine.)

1. a kind of split type fuel oil supply system of single cylinder common rail diesel engine, it is characterised in that: including fuel tank, low-voltage fuel Pump, oil-water separator, fuel oil filter, high pressure fuel pump, high pressure fuel rail, common-rail injector and single cylinder common rail machine；

Wherein, the low-pressure fuel pump is connect with fuel tank, is used for fuel feeding；The output end of the low-pressure fuel pump passes through grease point It disembarks and carries out water-oil separating, the fuel oil of oil-water separator output is input to high pressure fuel pump progress after filter filters It is single cylinder common rail machine fuel feeding after being sequentially inputted to high pressure fuel rail, common-rail injector after secondary pressurized.

2. a kind of split type fuel oil supply system of single cylinder common rail diesel engine according to claim 1, it is characterised in that: also Including for carrying out cooling oil cooled system to high pressure fuel pump；

Wherein, the oil cooled system includes oil tank, lubricating oil pump, oil filter；And

The lubricating oil pump cools down high pressure fuel pump after oil strainer after extracting machine oil in oil tank, so Afterwards, it comes back in oil tank from flowing through machine oil in high pressure fuel pump.

3. a kind of split type fuel oil supply system of single cylinder common rail diesel engine according to claim 1, it is characterised in that: institute The fuel oil filter stated includes thick fuel filter and smart fuel filter；Wherein, thick fuel filter is close to oil water separator Setting filters fuel oil by smart fuel filter and thick fuel filter twice；

Wherein, it is provided with pressure gauge I on the fuel passage before thick fuel filter, is set on the fuel pipe after smart fuel filter It is equipped with pressure gauge II, for monitoring fuel oil fuel pressure situation of change after thick fuel filter and smart fuel filter.

4. a kind of split type fuel oil supply system of single cylinder common rail diesel engine according to claim 1, it is characterised in that: high It is provided with electromagnetic valve I on fuel pipe between compression ignition oil pump and high pressure fuel rail, for controlling the combustion for entering high pressure fuel rail Oil pressure.

5. a kind of split type fuel oil supply system of single cylinder common rail diesel engine according to claim 2, it is characterised in that: machine Pressure gauge IV and thermometer III is provided between oil rectifier and high pressure fuel pump, it is before cooling for monitoring high pressure fuel pump Engine oil pressure and temperature, engine oil pressure before cooling and temperature are in the range of meeting the requirements.

6. a kind of split type fuel oil supply system of single cylinder common rail diesel engine according to claim 2, it is characterised in that: high It is provided with pressure gauge V and thermometer IV on machine oil pipeline after cooling between compression ignition oil pump and oil tank, for monitoring height Compression ignition oil pump engine oil pressure after cooling and temperature.

Technical field

The invention belongs to a kind of confessions of the split type fuel oil of diesel engine test technical field more particularly to single cylinder common rail diesel engine To system.

Background technique

Single cylinder common rail diesel engine combines the advantages of single cylinder diesel and high pressure co-rail system, not only realizes to air inlet pressure The perfect control of power, charge flow rate, pressure at expulsion, also achieves to single cylinder diesel injection pressure, oil spout start-up time, oil spout Finish time, the accurate adjusting of oil spout flow are provided simultaneously with the multiple functions such as low speed heavy pressure injection and multi-injection, extend list The freedom degree of cylinder diesel optimization provides broader optimization space to further increase diesel engine performance, reducing discharge.It is high Press fuel rail and common-rail injector as the most important component of single cylinder common rail diesel engine, precise structure, internal fuel pressure is most It is high fuel pressurization system and fuel oil quality to be required stringent up to 300Mpa, it such as handles bad, high pressure fuel rail and altogether can be caused The blocking of rail injector causes scrapping for entire common rail system, while because single cylinder common rail machine is small in size, light-weight, it is impossible to Fuel system is suspended on one entirety of formation on machine as multi-cylinder common rail machine.Each component of common rail system needs to hang single cylinder On machine, difficult arrangement.

Summary of the invention

In order to solve the problems, such as that each component of single cylinder common rail machine needs to hang on single cylinder engine in the prior art, the present invention provides one The split type fuel oil supply system of kind single cylinder common rail diesel engine.

To achieve the goals above, the present invention use the specific scheme is that a kind of split type combustion of single cylinder common rail diesel engine Oily feed system, it is characterised in that: including fuel tank, low-pressure fuel pump, oil-water separator, fuel oil filter, high pressure fuel pump, High pressure fuel rail, common-rail injector and single cylinder common rail machine；

Wherein, the low-pressure fuel pump is connect with fuel tank, is used for fuel feeding；The output end of the low-pressure fuel pump passes through oil Water separator carries out water-oil separating, and the fuel oil of oil-water separator output is input to high pressure fuel pump after filter filters It is single cylinder common rail machine fuel feeding after being sequentially inputted to high pressure fuel rail, common-rail injector after carrying out secondary pressurized.

A kind of split type fuel oil supply system of single cylinder common rail diesel engine, it is characterised in that: further include for high compression ignition Oil pump carries out cooling oil cooled system；

Wherein, the oil cooled system includes oil tank, lubricating oil pump, oil filter；And the lubricating oil pump High pressure fuel pump is cooled down after oil strainer after extracting machine oil in oil tank, then, from high pressure fuel pump In flow through machine oil and come back in oil tank.

The utility model has the advantages that structure of the invention it is compact, it is easy to carry, can complete independently operation without external equipment, can for a long time It is stable operation, easy to maintenance, while each component of common rail system does not need independently place, arrangement is convenient on suspension single cylinder engine.

Detailed description of the invention

Fig. 1 is present system schematic diagram, comprising: 1, fuel tank, 2, thermometer I, 3, low-pressure fuel pump, 4, water-oil separating Machine, 5, pressure gauge I, 6, thick fuel filter, 7, smart fuel filter, 8, pressure gauge II, 9, high pressure fuel pump, 10, solenoid valve I, 11, pressure gauge III, 12, thermometer II, 13, high pressure fuel rail, 14, common-rail injector, 15, solenoid valve II, 16, single cylinder common rail Machine, 17, hydraulic dynamometer, 18, oil tank, 19, lubricating oil pump, 20, oil filter, 21, pressure gauge IV, 22, thermometer III, 23, thermometer IV, 24, pressure gauge V, 25, Fuel Oil Cooler.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description.

A kind of single cylinder common rail diesel engine that can satisfy divides fuel pressurization ability and fuel oil quality requirement as shown in Figure 1: Body formula fuel oil supply system.Fuel oil needed for single cylinder common rail machine 16 is through fuel tank 1, low-pressure fuel pump 3, oil-water separator 4, thick fuel oil Filter 6, smart fuel filter 7, high pressure fuel pump 9, high pressure fuel rail 13, common-rail injector 14 enter single cylinder common rail machine 16: Fuel oil needed for fuel tank 1 possesses enough volume storage single cylinder common rail machines 16；Low-pressure fuel pump 3 extracts fuel oil from fuel tank 1, Thermometer I2 is installed on the front tube road of low-pressure fuel pump 3 for monitoring fuel oil temperature；Oil-water separator 4 is to the water in fuel oil It is separated, controls the moisture content in fuel oil；Thick fuel filter 6 and smart fuel filter 7 are in filter fuel Particulate contaminant is equipped with pressure gauge I 5, the fuel pipe after smart fuel filter 7 on the fuel passage before thick fuel filter 6 Road is equipped with pressure gauge II 8, changes for monitoring fuel oil fuel pressure after thick fuel filter 6 and smart fuel filter 7 Situation；High pressure fuel pump 9 carries out secondary pressurized to fuel oil, the fuel oil of the enough pressure of high pressure fuel rail 13 is supplied, in high pressure fuel Electromagnetic valve I 10 is installed on fuel pipe between pump 9 and high pressure fuel rail 13, for controlling the combustion for entering high pressure fuel rail 13 Oil pressure；High pressure fuel rail 13 is equipped with pressure gauge III 11 and thermometer II for storing high pressure fuel on high pressure fuel rail 13 12 for monitoring the pressure, temperature variation situation of the high pressure fuel in high pressure fuel rail 13；High pressure fuel passes through common-rail injector 14 into common rail single cylinder engine 16 jet atomization fuel oil, electromagnetic valve II 15 is installed for controlling co-rail oil injection on common-rail injector 14 14 start-up time of device, finish time control oil injection duration in turn；Hydraulic dynamometer 17 is provided and is born needed for common rail single cylinder engine 16 It carries.

The fuel oil that 25 pairs of Fuel Oil Cooler recycling are equipped on the pipeline that fuel oil is recovered to fuel tank 1 is cooled down to protect The fuel oil temperature of card fuel tank 1 persistently keeps low-temperature condition.

For the lasting normal work for ensureing high pressure fuel pump 9, the invention also includes oil cooled systems: high pressure fuel pump 9 Required machine oil cold high pressure fuel pump 9 after oil tank 18, lubricating oil pump 19, oil filter 20, and passed through by oil return line The cooling machine oil completed is recovered to oil tank 18: machine needed for oil tank 18 possesses enough volume storage high pressure fuel pumps Oil carries cooling system, for cooling down to the machine oil in oil tank 18；The extraction machine from oil tank 18 of lubricating oil pump 19 Oil, oil filter 20 are filtered machine oil, guarantee the cleannes of machine oil；On the machine oil pipeline before cooling of high pressure fuel pump 9 Pressure gauge IV21 and thermometer III22 are installed, it is cooling for monitoring the engine oil pressure before cooling of high pressure fuel pump 9 and temperature Preceding engine oil pressure and temperature is in the range of meeting the requirements；Pressure is installed on the machine oil pipeline after cooling of high pressure fuel pump 9 Table V 24 and thermometer IV23, for monitoring the engine oil pressure after cooling of high pressure fuel pump 9 and temperature, by comparison it is cooling before and The situation of change of engine oil pressure before cooling and temperature, deteminate machine oil pipe line stopping state, cooling effect guarantee high pressure fuel pump 9 using safe.

The present invention remaining equipment in addition to high pressure fuel rail 13, common-rail injector 14 and solenoid valve II 15 is not suspended on single cylinder On common rail machine 16, it is external equipment, all can work independently, belongs to split-type design.

The present invention during the work time can be according to thermometer I 2, pressure gauge I 5, pressure gauge II 8, high pressure fuel pump 9, pressure Table III 11, thermometer II 12, the temperature and pressure of pressure gauge IV 21, thermometer III 22, thermometer IV 23, pressure gauge V 24 becomes Change situation monitored over time whole system high-pressure oil passage and machine oil pipeline intermediate fuel oil, machine oil temperature and pressure situation of change, be System determines rapidly failure cause when breaking down.Before not breaking down, according to the display situation of each thermometer and pressure gauge, sentence Surely it whether there is abnormality, carry out fault pre-alarming.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can change or replacement easily, belong to this hair Within bright protection scope.Therefore it is subject to the protection scope in claims described in protection scope of the present invention.