CN114019086B - Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel - Google Patents
Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 163
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 134
- 239000002828 fuel tank Substances 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000012805 post-processing Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 7
- 239000003502 gasoline Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- Combustion & Propulsion (AREA)
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- Analytical Chemistry (AREA)
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
技术领域Technical Field
本发明涉及燃料辛烷值测量装置的技术领域，特别是一种带有电控燃油供给系统的适用于气体燃料或气液灵活燃料的辛烷值测量装置。The invention relates to the technical field of fuel octane number measuring devices, in particular to an octane number measuring device with an electronically controlled fuel supply system suitable for gaseous fuel or gas-liquid flexible fuel.
背景技术Background technique
随着汽车工业的快速发展、能源需求量的增加以及化石燃料的使用带来的能源短缺和环境污染问题，探索可再生、清洁、经济的替代燃料变得越来越有必要。在各种汽油替代燃料中，氢气、天然气、液化石油气、甲醇和氨气等低碳或零碳燃料来源广泛，储量丰富，被视为有前景的汽油替代燃料，可解决目前能源短缺问题。然而，要了解及评价这些燃料或其与汽油混合燃料的抗爆倾向，需要知道其辛烷值。然而，现有的燃料辛烷值测量装置只能测量液体燃料的辛烷值，无法测量气体燃料或者气液灵活燃料的辛烷值。因此，如何创新设计燃料辛烷值测量装置，能够测量气体燃料或者气液灵活燃料的辛烷值是本领域亟待解决的技术难题。With the rapid development of the automobile industry, the increase in energy demand, and the energy shortage and environmental pollution problems caused by the use of fossil fuels, it has become increasingly necessary to explore renewable, clean and economical alternative fuels. Among various gasoline alternative fuels, low-carbon or zero-carbon fuels such as hydrogen, natural gas, liquefied petroleum gas, methanol and ammonia have a wide range of sources and abundant reserves. They are regarded as promising gasoline alternative fuels that can solve the current energy shortage problem. However, to understand and evaluate the anti-knock tendency of these fuels or their mixed fuels with gasoline, it is necessary to know their octane number. However, the existing fuel octane number measuring device can only measure the octane number of liquid fuels, and cannot measure the octane number of gas fuels or gas-liquid flexible fuels. Therefore, how to innovatively design a fuel octane number measuring device that can measure the octane number of gas fuels or gas-liquid flexible fuels is a technical problem that needs to be solved in this field.
发明内容Summary of the invention
本发明针对现有技术的不足，提出一种适用于气体燃料或气液灵活燃料的燃料辛烷值测量装置，可以方便测量气体燃料或者气液灵活燃料的辛烷值。In view of the deficiencies of the prior art, the present invention provides a fuel octane number measuring device suitable for gas fuel or gas-liquid flexible fuel, which can conveniently measure the octane number of the gas fuel or gas-liquid flexible fuel.
本发明是通过以下技术方案来实现，本发明包括燃油箱、燃油泵、压力调节器、压力表、喷油器、第一热电偶、压力传感器、氧气传感器、第一加热器、竖直进气管、辛烷值测定机的燃烧室、辛烷值测定机机体、排气管、排气后处理装置、消声器、前进气管、回油管、气罐、气体流量控制器、气体喷嘴、减压阀、气罐开关、后进气管、第二加热器、第二热电偶、气体燃料管、第三加热器、第三热电偶、控制器，燃油箱、燃油泵、压力调节器、压力表、喷油器通过燃油管路依次串接在一起，辛烷值测定机的燃烧室布置在辛烷值测定机机体内，前进气管、竖直进气管、后进气管依次连接在一起，后进气管的出气口与辛烷值测定机的燃烧室的进气口相连接，氧气传感器、压力传感器、第一加热器、第一热电偶沿进气流向依次布置在前进气管上，第二加热器布置在后进气管上，喷油器布置在竖直进气管上；排气管的进气口与辛烷值测定机的燃烧室的出气口相连接，排气后处理装置、消声器沿排气流向依次布置在排气管上；回油管的两端口分别与燃油箱、压力调节器相连通；气罐开关布置在气罐的出气口处，气体燃料管的进气口与气罐的出气口相连接，气体喷嘴布置在气体燃料管的出气口处并伸入竖直进气管内，减压阀、气体流量控制器、第三加热器、第三热电偶沿气体燃料流动方向在气体燃料管上依次布置；控制器用于对喷油器、第一加热器、第二加热器、第三加热器进行控制；气体喷嘴布置在竖直进气管的下端；燃油箱、燃油泵、压力调节器、压力表、喷油器、气罐的个数均为两个以上；第一加热器、第二加热器、第三加热器均为电控加热装置。The present invention is realized by the following technical scheme, which includes a fuel tank, a fuel pump, a pressure regulator, a pressure gauge, a fuel injector, a first thermocouple, a pressure sensor, an oxygen sensor, a first heater, a vertical intake pipe, a combustion chamber of an octane number measuring machine, an octane number measuring machine body, an exhaust pipe, an exhaust after-treatment device, a muffler, a front intake pipe, an oil return pipe, a gas tank, a gas flow controller, a gas nozzle, a pressure reducing valve, a gas tank switch, a rear intake pipe, a second heater, a second thermocouple, a gas fuel pipe, a third heater, a third thermocouple, and a controller. The fuel tank, the fuel pump, the pressure regulator, the pressure gauge, and the fuel injector are sequentially connected in series through a fuel pipeline. The combustion chamber of the octane number measuring machine is arranged in the octane number measuring machine body. The front intake pipe, the vertical intake pipe, and the rear intake pipe are sequentially connected together. The air outlet of the rear intake pipe is connected to the air inlet of the combustion chamber of the octane number measuring machine. The oxygen sensor, the pressure sensor, the first heater, and the first thermocouple are sequentially arranged along the intake air flow direction. On the front intake pipe, the second heater is arranged on the rear intake pipe, and the injector is arranged on the vertical intake pipe; the air inlet of the exhaust pipe is connected to the air outlet of the combustion chamber of the octane number measuring machine, and the exhaust after-treatment device and the muffler are arranged on the exhaust pipe in sequence along the exhaust flow direction; the two ends of the return pipe are respectively connected to the fuel tank and the pressure regulator; the gas tank switch is arranged at the air outlet of the gas tank, the air inlet of the gas fuel pipe is connected to the air outlet of the gas tank, the gas nozzle is arranged at the air outlet of the gas fuel pipe and extends into the vertical intake pipe, the pressure reducing valve, the gas flow controller, the third heater, and the third thermocouple are arranged on the gas fuel pipe in sequence along the gas fuel flow direction; the controller is used to control the injector, the first heater, the second heater, and the third heater; the gas nozzle is arranged at the lower end of the vertical intake pipe; the number of the fuel tank, the fuel pump, the pressure regulator, the pressure gauge, the injector, and the gas tank is more than two; the first heater, the second heater, and the third heater are all electrically controlled heating devices.
本发明包括进气系统，气体燃料供给系统、液体燃料供给系统、排气系统和辛烷值测定机机体。The invention comprises an air intake system, a gas fuel supply system, a liquid fuel supply system, an exhaust system and an octane number measuring machine body.
进气系统含有压力传感器、氧气传感器、加热器。加热器安装在进气管中，对进气管中的空气或者燃料与空气的混合气加热使其达到燃料辛烷值的测试条件。The intake system contains a pressure sensor, an oxygen sensor, and a heater. The heater is installed in the intake pipe to heat the air or the mixture of fuel and air in the intake pipe to reach the test conditions of the fuel octane number.
排气系统含有排气后处理装置和消声器，辛烷值测定机的排气门与排气系统相连。燃油在辛烷值测定机的燃烧室燃烧后产生的排气依次通过排气后处理装置和消声器后进入大气环境。The exhaust system includes an exhaust aftertreatment device and a muffler, and the exhaust valve of the octane number tester is connected to the exhaust system. The exhaust generated after the fuel is burned in the combustion chamber of the octane number tester passes through the exhaust aftertreatment device and the muffler in turn and enters the atmosphere.
液体燃料供给系统含有燃油箱、燃油泵、压力调节器、压力表、燃油管、控制燃油泵的开关和喷油器。安装四个容积相同的燃油箱，每个燃油箱通过燃油管连接到所述燃油泵，用每个开关控制每一个燃油泵的开启与关闭。燃油泵通过燃油管依次连接到压力调节器、压力表和喷油器。此外，还设置了回油路使多余的燃油可通过压力调节器回流至燃油箱。The liquid fuel supply system includes a fuel tank, a fuel pump, a pressure regulator, a pressure gauge, a fuel pipe, a switch for controlling the fuel pump, and a fuel injector. Four fuel tanks of the same volume are installed, each of which is connected to the fuel pump through a fuel pipe, and each switch is used to control the opening and closing of each fuel pump. The fuel pump is connected to the pressure regulator, the pressure gauge, and the fuel injector in sequence through the fuel pipe. In addition, a return oil circuit is provided so that excess fuel can flow back to the fuel tank through the pressure regulator.
气体燃料供给系统含有三个气罐、压力减压阀、气体流量控制器、加热器和气体喷嘴。气罐排出气体通过减压阀减压后用气体流量控制器来控制气体的流量。加热器用来对气体燃料进行加热，使其符合燃料辛烷值的测试条件，并通过气体喷嘴进入辛烷值测定机的进气管。The gas fuel supply system contains three gas tanks, a pressure reducing valve, a gas flow controller, a heater and a gas nozzle. The gas discharged from the gas tank is decompressed by the pressure reducing valve and the gas flow controller is used to control the gas flow. The heater is used to heat the gas fuel to meet the test conditions of the fuel octane number and enter the intake pipe of the octane number tester through the gas nozzle.
气体燃料供给系统，含有三个气罐，这三个气罐分别放置待测样气，高标样气体和低标样气体，通过减压阀后进入辛烷值测定机。The gas fuel supply system contains three gas tanks, which respectively contain the sample gas to be tested, the high standard sample gas and the low standard sample gas, which enter the octane number tester after passing through the pressure reducing valve.
在本发明中，液体燃料供给系统中燃油泵的存在使燃油系统内产生一定的油压，产生稳定的喷油量，以及较高的燃油雾化质量。因此，燃油可在进气道中完全雾化并与空气或气体燃料充分混合后进入辛烷值测定机的燃烧室，以预混合燃烧模式燃烧。In the present invention, the presence of the fuel pump in the liquid fuel supply system generates a certain oil pressure in the fuel system, produces a stable fuel injection amount, and has a higher fuel atomization quality. Therefore, the fuel can be completely atomized in the intake passage and fully mixed with air or gaseous fuel before entering the combustion chamber of the octane number tester to be burned in a premixed combustion mode.
与现有技术相比，本发明具有如下有益效果：本发明不仅可测量气体燃料的辛烷值还可以测量气体燃料和液体燃料混合后的辛烷值，解决了目前现有的燃料辛烷值测定机无法测量气体燃料或气液灵活燃料的辛烷值的技术难题。本发明还可以测量在常温下沸点较低的液体燃料的辛烷值，具体方案是首先将这些燃料加热蒸发使其变成气体状态，之后使其进入气体燃料系统装置进行辛烷值测定。本发明设计成本低，结构简单，安装方便，在燃料辛烷值测定机领域具有非常突出的应用价值。Compared with the prior art, the present invention has the following beneficial effects: the present invention can not only measure the octane number of gas fuel, but also measure the octane number of a mixture of gas fuel and liquid fuel, thus solving the technical problem that the existing fuel octane number measuring machine cannot measure the octane number of gas fuel or gas-liquid flexible fuel. The present invention can also measure the octane number of liquid fuel with a low boiling point at room temperature. The specific scheme is to first heat and evaporate these fuels to turn them into a gas state, and then allow them to enter the gas fuel system device for octane number measurement. The present invention has low design cost, simple structure, and convenient installation, and has very outstanding application value in the field of fuel octane number measuring machines.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明控制器的结构示意图；FIG1 is a schematic diagram of the structure of a controller of the present invention;
其中，1、燃油箱，2、燃油泵，3、压力调节器，4、压力表，5、喷油器，6、第一热电偶，7、压力传感器，8、氧气传感器，9、第一加热器，10、竖直进气管，11、辛烷值测定机的燃烧室，12、辛烷值测定机机体，13、排气管，14、排气后处理装置，15、消声器，16、前进气管，17、回油管，18、气罐，19、气体流量控制器，20、气体喷嘴，21、减压阀，22、气罐开关，23、后进气管，24、第二加热器，25、第二热电偶，26、气体燃料管，27、第三加热器，28、第三热电偶。Among them, 1. fuel tank, 2. fuel pump, 3. pressure regulator, 4. pressure gauge, 5. injector, 6. first thermocouple, 7. pressure sensor, 8. oxygen sensor, 9. first heater, 10. vertical intake pipe, 11. combustion chamber of octane number measuring machine, 12. octane number measuring machine body, 13. exhaust pipe, 14. exhaust after-treatment device, 15. muffler, 16. front intake pipe, 17. oil return pipe, 18. gas tank, 19. gas flow controller, 20. gas nozzle, 21. pressure reducing valve, 22. gas tank switch, 23. rear intake pipe, 24. second heater, 25. second thermocouple, 26. gas fuel pipe, 27. third heater, 28. third thermocouple.
具体实施方式Detailed ways
下面结合附图对本发明的实施例作详细说明，本实施例以本发明技术方案为前提，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiment.
实施例Example
本发明如上图1所示，本发明包括燃油箱1、燃油泵2、压力调节器3、压力表4、喷油器5、第一热电偶6、压力传感器7、氧气传感器8、第一加热器9、竖直进气管10、辛烷值测定机的燃烧室11、辛烷值测定机机体12、排气管13、排气后处理装置14、消声器15、前进气管16、回油管17、气罐18、气体流量控制器19、气体喷嘴20、减压阀21、气罐开关22、后进气管23、第二加热器24、第二热电偶25、气体燃料管26、第三加热器27、第三热电偶28、控制器，燃油箱1、燃油泵2、压力调节器3、压力表4、喷油器5通过燃油管路依次串接在一起，辛烷值测定机的燃烧室11布置在辛烷值测定机机体12内，前进气管16、竖直进气管10、后进气管23依次连接在一起，后进气管23的出气口与辛烷值测定机的燃烧室11的进气口相连接，氧气传感器8、压力传感器7、第一加热器9、第一热电偶6沿进气流向依次布置在前进气管16上，第二加热器24布置在后进气管23上，喷油器5布置在竖直进气管10上；排气管13的进气口与辛烷值测定机的燃烧室11的出气口相连接，排气后处理装置14、消声器15沿排气流向依次布置在排气管13上；回油管17的两端口分别与燃油箱1、压力调节器3相连通；气罐开关22布置在气罐18的出气口处，气体燃料管26的进气口与气罐18的出气口相连接，气体喷嘴20布置在气体燃料管26的出气口处并伸入竖直进气管10内，减压阀21、气体流量控制器19、第三加热器27、第三热电偶28沿气体燃料流动方向在气体燃料管26上依次布置；控制器用于对喷油器5、第一加热器9、第二加热器24、第三加热器27进行控制；气体喷嘴20布置在竖直进气管10的下端。燃油箱1、燃油泵2、压力调节器3、压力表4、喷油器5的个数均为四个，气罐18的个数为三个；第一加热器9、第二加热器24、第三加热器27均为电控加热装置。As shown in FIG. 1 , the present invention includes a fuel tank 1, a fuel pump 2, a pressure regulator 3, a pressure gauge 4, a fuel injector 5, a first thermocouple 6, a pressure sensor 7, an oxygen sensor 8, a first heater 9, a vertical intake pipe 10, a combustion chamber 11 of an octane number measuring machine, an octane number measuring machine body 12, an exhaust pipe 13, an exhaust after-treatment device 14, a muffler 15, a front intake pipe 16, a return oil pipe 17, a gas tank 18, a gas flow controller 19, a gas nozzle 20, a pressure reducing valve 21, a gas tank switch 22, and a rear intake pipe 23, a second heater 24, a second thermocouple 25, a gas fuel pipe 26, a third heater 27, a third thermocouple 28, a controller, a fuel tank 1, a fuel pump 2, a pressure regulator 3, a pressure gauge 4, and a fuel injector 5 are sequentially connected in series through a fuel pipeline, a combustion chamber 11 of an octane number measuring machine is arranged in an octane number measuring machine body 12, a front intake pipe 16, a vertical intake pipe 10, and a rear intake pipe 23 are sequentially connected together, an outlet of the rear intake pipe 23 is connected to an intake port of the combustion chamber 11 of the octane number measuring machine, and an oxygen sensor 24 is connected to ... The sensor 8, the pressure sensor 7, the first heater 9, and the first thermocouple 6 are sequentially arranged on the front intake pipe 16 along the intake flow direction, the second heater 24 is arranged on the rear intake pipe 23, and the injector 5 is arranged on the vertical intake pipe 10; the air inlet of the exhaust pipe 13 is connected to the air outlet of the combustion chamber 11 of the octane number measuring machine, and the exhaust after-treatment device 14 and the muffler 15 are sequentially arranged on the exhaust pipe 13 along the exhaust flow direction; the two ends of the return pipe 17 are respectively connected to the fuel tank 1 and the pressure regulator 3; the gas tank switch 22 is arranged on the gas tank 18, the air inlet of the gas fuel pipe 26 is connected to the air outlet of the gas tank 18, the gas nozzle 20 is arranged at the air outlet of the gas fuel pipe 26 and extends into the vertical air intake pipe 10, the pressure reducing valve 21, the gas flow controller 19, the third heater 27, and the third thermocouple 28 are arranged in sequence on the gas fuel pipe 26 along the flow direction of the gas fuel; the controller is used to control the injector 5, the first heater 9, the second heater 24, and the third heater 27; the gas nozzle 20 is arranged at the lower end of the vertical air intake pipe 10. The number of the fuel tank 1, the fuel pump 2, the pressure regulator 3, the pressure gauge 4, and the injector 5 are all four, and the number of the gas tank 18 is three; the first heater 9, the second heater 24, and the third heater 27 are all electrically controlled heating devices.
在本发明中，进气系统含有压力传感器7、氧气传感器8、第一加热器9、第二加热器24，加热器安装在进气管中，对进气管中的空气或者油气加热，使其达到燃料辛烷值的测试条件。In the present invention, the intake system includes a pressure sensor 7, an oxygen sensor 8, a first heater 9, and a second heater 24. The heater is installed in the intake pipe to heat the air or oil gas in the intake pipe to meet the test conditions of the fuel octane number.
排气系统含有排气后处理装置14和消声器15，辛烷值测定机机体12的排气门与排气系统相连。燃油在辛烷值测定机的燃烧室11燃烧后产生的排气依次通过排气后处理装置14和消声器15后进入大气环境。The exhaust system includes an exhaust post-processing device 14 and a muffler 15, and the exhaust valve of the octane number measuring machine body 12 is connected to the exhaust system. The exhaust gas generated after the fuel is burned in the combustion chamber 11 of the octane number measuring machine passes through the exhaust post-processing device 14 and the muffler 15 in sequence and then enters the atmosphere.
液体燃料供给系统含有燃油箱1、燃油泵2、压力调节器3、压力表4、燃油管、控制燃油泵的开关、喷油器5，安装四个容积相同的燃油箱1，每个燃油箱1通过燃油管连接到燃油泵2，用每个电器开关控制每一个燃油泵2的开启与关闭。燃油泵2通过燃油管依次连接到压力调节器3、压力表4和喷油器5。此外，还设置了回油管17使多余的燃油可通过压力调节器3回流到原来的燃油箱1。The liquid fuel supply system includes a fuel tank 1, a fuel pump 2, a pressure regulator 3, a pressure gauge 4, a fuel pipe, a switch for controlling the fuel pump, and a fuel injector 5. Four fuel tanks 1 of the same volume are installed, each of which is connected to a fuel pump 2 through a fuel pipe, and each electrical switch is used to control the opening and closing of each fuel pump 2. The fuel pump 2 is connected to the pressure regulator 3, the pressure gauge 4, and the fuel injector 5 in sequence through the fuel pipe. In addition, a return pipe 17 is provided so that the excess fuel can flow back to the original fuel tank 1 through the pressure regulator 3.
气体燃料供给系统含有三个气罐18、减压阀21、气体流量控制器19、第三加热器27和气体喷嘴20。气罐18排出气体通过减压阀21减压后用气体流量控制器19来控制气体的流量。第三加热器27用来对气体燃料进行加热，使其符合燃料辛烷值的测试条件，并通过气体喷嘴20进入辛烷值测定机机体12的进气管。The gas fuel supply system includes three gas tanks 18, a pressure reducing valve 21, a gas flow controller 19, a third heater 27 and a gas nozzle 20. The gas discharged from the gas tank 18 is decompressed by the pressure reducing valve 21 and the gas flow controller 19 is used to control the gas flow. The third heater 27 is used to heat the gas fuel to meet the test conditions of the fuel octane number, and enter the intake pipe of the octane number tester body 12 through the gas nozzle 20.
气体燃料供给系统，含有三个气罐18，这三个气罐分别放置待测样气，高标样气体和低标样气体，通过减压阀后进入燃料辛烷值测定机。The gas fuel supply system comprises three gas tanks 18, wherein the three gas tanks are respectively filled with the sample gas to be tested, the high standard sample gas and the low standard sample gas, which enter the fuel octane number measuring machine after passing through the pressure reducing valve.
在本发明中，液体燃料供给系统中燃油泵2的存在使燃油系统内产生一定的油压，从而具有稳定的喷油量，燃油雾化质量得到提高。因此，燃油可在进气道中完全雾化并与空气或气体燃料充分混合后进入辛烷值测定机的燃烧室11中以预混合燃烧模式燃烧。In the present invention, the presence of the fuel pump 2 in the liquid fuel supply system generates a certain oil pressure in the fuel system, thereby having a stable fuel injection amount and improving the fuel atomization quality. Therefore, the fuel can be completely atomized in the intake duct and fully mixed with air or gas fuel before entering the combustion chamber 11 of the octane number tester to be burned in a premixed combustion mode.
本发明的实施包括以下步骤：The implementation of the present invention comprises the following steps:
首先启动辛烷值测定机机体12，启动辛烷值测定机的点火开关，使燃油系统也处于工作即启动燃油泵2的控制开关，使油路中有燃油，喷油器5喷出的油（热机时一般使用汽油）在进气管完全雾化后进入辛烷值测定机的燃烧室11燃烧，使辛烷值测定机机体12预热30分钟左右。在启动辛烷值测定机机体12时，也同时使进气管中的第一加热器9、第二加热器24处于加热的状态。当辛烷值测定机机体12的各个控制参数达到燃料辛烷值的测试条件后开始对油样燃料进行辛烷值测试。First, start the octane number measuring machine body 12, start the ignition switch of the octane number measuring machine, and put the fuel system into operation, that is, start the control switch of the fuel pump 2, so that there is fuel in the oil circuit, and the oil sprayed by the injector 5 (generally gasoline is used when the engine is hot) enters the combustion chamber 11 of the octane number measuring machine after being completely atomized in the intake pipe to burn, so that the octane number measuring machine body 12 is preheated for about 30 minutes. When the octane number measuring machine body 12 is started, the first heater 9 and the second heater 24 in the intake pipe are also in a heated state. When the various control parameters of the octane number measuring machine body 12 reach the test conditions of the fuel octane number, the octane number test of the oil sample fuel begins.
如果要测量气液灵活燃料的辛烷值，需要打开液体燃料供给系统控制器。同时，打开气体系统中的减压阀21、气体流量控制器19、气体喷嘴20，并同时打开被测气体燃料的气罐开关22。在液体燃料供给系统中，用控制器来控制喷油时刻和喷油脉宽。在气体燃料供给系统中，用气体流量控制器19控制气体燃料的流量。通过电子单元控制软件自动寻找最佳的油气当量比，从而可找到最大的爆震强度，准确测量燃料辛烷值。燃料在辛烷值测定机的燃烧室11燃烧后产生的排气通过排气管13流到排气后处理装置14；之后排气通过消声器15后排到大气环境。If you want to measure the octane number of gas-liquid flexible fuel, you need to open the liquid fuel supply system controller. At the same time, open the pressure reducing valve 21, gas flow controller 19, gas nozzle 20 in the gas system, and at the same time open the gas tank switch 22 of the gas fuel to be measured. In the liquid fuel supply system, the controller is used to control the injection timing and injection pulse width. In the gas fuel supply system, the gas flow controller 19 is used to control the flow of gas fuel. The electronic unit control software automatically finds the best oil-gas equivalence ratio, so that the maximum knock intensity can be found and the fuel octane number can be accurately measured. The exhaust gas generated after the fuel is burned in the combustion chamber 11 of the octane number measuring machine flows to the exhaust after-treatment device 14 through the exhaust pipe 13; then the exhaust gas passes through the muffler 15 and is discharged to the atmosphere.
如果仅仅要测量气体燃料的辛烷值，也需要按照以上的热机程序运行。当气体燃料供给系统和进气系统的各参数达到辛烷值的测试条件后，即热机结束后，关闭液体燃料供给系统的各个控制单元。打开气体燃料供给系统中的气体减压阀和被测气体燃料的气罐开关。分别测量气体高标样燃料、气体低标样燃和气体待测燃料的辛烷值。燃料在辛烷值测定机的燃烧室11燃烧后产生的排气通过所述排气管13流到排气后处理装置14。之后，排气通过消声器15后排到大气环境。If you only want to measure the octane number of gas fuel, you also need to run it according to the above heat engine program. When the parameters of the gas fuel supply system and the intake system reach the test conditions of the octane number, that is, after the heat engine is finished, turn off the various control units of the liquid fuel supply system. Open the gas pressure reducing valve in the gas fuel supply system and the gas tank switch of the gas fuel to be tested. Measure the octane number of the gas high standard sample fuel, the gas low standard sample fuel and the gas fuel to be tested respectively. The exhaust gas generated after the fuel is burned in the combustion chamber 11 of the octane number measuring machine flows through the exhaust pipe 13 to the exhaust after-treatment device 14. Afterwards, the exhaust gas is discharged into the atmosphere after passing through the muffler 15.
本发明的一种适用于气体燃料或气液灵活燃料的辛烷值测量装置，对原辛烷值测定机的燃油供给系统进行重新设计，并设计气体燃料供给系统，在辛烷值测定机领域具有非常突出的应用价值。The octane number measuring device of the present invention is suitable for gas fuel or gas-liquid flexible fuel. The fuel supply system of the original octane number measuring machine is redesigned, and the gas fuel supply system is designed. It has very outstanding application value in the field of octane number measuring machines.
以上对本发明的具体操作方式进行了描述。需要理解的是，本发明并不局限于上述特定操作方式，本领域技术人员可以在权利要求的范围内做出各种变化或修改，这并不影响本发明的实质内容。The above describes the specific operation mode of the present invention. It should be understood that the present invention is not limited to the above specific operation mode, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention.
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