CN216386919U - 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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- CN216386919U CN216386919U CN202123055764.5U CN202123055764U CN216386919U CN 216386919 U CN216386919 U CN 216386919U CN 202123055764 U CN202123055764 U CN 202123055764U CN 216386919 U CN216386919 U CN 216386919U
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Abstract
The utility model relates to the technical field of octane number measuring machines, in particular to a fuel octane number measuring device suitable for gas fuel or gas-liquid flexible fuel. The oxygen sensor, the pressure sensor, the first heater and the first thermocouple are sequentially arranged on the front air inlet pipe along the air inlet flow direction, the second heater is arranged on the rear air inlet pipe, the post-processing device and the silencer are sequentially arranged on the exhaust pipe along the exhaust flow direction, and the pressure reducing valve, the gas flow controller, the third heater and the third thermocouple are sequentially arranged on a gas fuel pipe. The method can measure the octane number of the gas fuel and can also measure the octane number of the gas-liquid flexible fuel. The method has a very outstanding application value in the aspect of measuring the octane number of the fuel oil.
Description
Technical Field
The utility model relates to the technical field of fuel octane number measuring devices, in particular to an octane number measuring device with an electric control fuel oil supply system and suitable for gas fuel or gas-liquid flexible fuel.
Background
With the rapid development of the automotive industry, the increase in energy demand, and the energy shortage and environmental pollution problems associated with the use of fossil fuels, it is becoming increasingly necessary to explore renewable, clean, and economical alternative fuels. Among various gasoline substitute fuels, low-carbon or zero-carbon fuels such as hydrogen, natural gas, liquefied petroleum gas, methanol, ammonia gas and the like have wide sources and abundant reserves, are regarded as promising gasoline substitute fuels, and can solve the problem of energy shortage at present. However, to understand and evaluate the anti-knock propensity of these fuels, or their blends with gasoline, it is necessary to know their octane number. However, the conventional fuel octane number measuring device can only measure the octane number of the liquid fuel, and cannot measure the octane number of the gas fuel or the gas-liquid flexible fuel. Therefore, how to innovatively design a fuel octane number measuring device and measure the octane number of gas fuel or gas-liquid flexible fuel is a technical problem to be solved in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the 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 the gas-liquid flexible fuel.
The utility model is realized by the following technical scheme that the device comprises 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 air inlet pipe, a combustion chamber of an octane number tester, an octane number tester body, an exhaust pipe, an exhaust post-treatment device, a silencer, an air inlet pipe, an oil return pipe, an air tank, an air flow controller, an air nozzle, a pressure reducing valve, an air tank switch, a rear air inlet pipe, a second heater, a second thermocouple, an air fuel pipe, a third heater, a third thermocouple and a controller. The fuel oil system comprises a fuel oil tank, a fuel oil pump, a pressure regulator, a pressure gauge and an oil injector which are sequentially connected in series through a fuel oil pipeline, wherein a combustion chamber of an octane number measuring machine is arranged in the octane number measuring machine body, a front air inlet pipe, a vertical air inlet pipe and a rear air inlet pipe are sequentially connected together, an air outlet of the rear air inlet pipe is connected with an air inlet of the combustion chamber of the octane number measuring machine, an oxygen sensor, a pressure sensor, a first heater and a first thermocouple are sequentially arranged on the front air inlet pipe along the air inlet flow direction, a second heater is arranged on the rear air inlet pipe, and the oil injector is arranged on the vertical air inlet pipe; the air inlet of the exhaust pipe is connected with the air outlet of the combustion chamber of the octane number tester, and the exhaust post-treatment device and the silencer are sequentially arranged on the exhaust pipe along the exhaust flow direction; two ports of the oil return pipe are respectively communicated with the fuel tank and the pressure regulator; the gas tank switch is arranged at the gas outlet of the gas tank, the gas inlet of the gas fuel pipe is connected with the gas outlet of the gas tank, the gas nozzle is arranged at the gas outlet of the gas fuel pipe and extends into the vertical gas inlet pipe, and the pressure reducing valve, the gas flow controller, the third heater and the third thermocouple are sequentially arranged on the gas fuel pipe along the flow direction of the gas fuel; the controller is used for controlling the oil injector, the first heater, the second heater and the third heater.
Further, in the present invention, the gas nozzle is disposed at the lower end of the vertical gas inlet pipe.
Furthermore, in the utility model, the number of the fuel tank, the fuel pump, the pressure regulator, the pressure gauge, the fuel injector and the gas tank is more than two.
Furthermore, in the present invention, the first heater, the second heater and the third heater are all electrically controlled heating devices.
The utility model comprises an air inlet system, a gas fuel supply system, a liquid fuel supply system, an exhaust system and an octane number measuring machine body.
The air intake system comprises a pressure sensor, an oxygen sensor and a heater. The heater is arranged in the air inlet pipe and heats air or a mixture of fuel and air in the air inlet pipe to enable the air or the mixture to reach a test condition of fuel octane number.
The exhaust system comprises an exhaust post-processing device and a silencer, and an exhaust valve of the octane number tester is connected with the exhaust system. The exhaust gas generated after the fuel oil is combusted in the combustion chamber of the octane number measuring machine passes through the exhaust gas post-processing device and the muffler in sequence and enters the atmosphere.
The liquid fuel supply system comprises 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 with the same volume are installed, each fuel tank is connected to the fuel pump through a fuel pipe, and each fuel pump is controlled to be turned on and off by each switch. The fuel pump is connected to the pressure regulator, the pressure gauge and the fuel injector in sequence through a fuel pipe. In addition, a return line is provided to allow excess fuel to flow back to the fuel tank through the pressure regulator.
The gas fuel supply system contains three gas tanks, a pressure relief valve, a gas flow controller, a heater, and a gas nozzle. The flow rate of the gas is controlled by a gas flow controller after the gas discharged from the gas tank is depressurized by a pressure reducing valve. The heater is used for heating the gas fuel to enable the gas fuel to meet the testing condition of the fuel octane number, and the gas enters the gas inlet pipe of the octane number testing machine through the gas nozzle.
The gas fuel supply system comprises three gas tanks, wherein the three gas tanks are respectively used for containing sample gas to be measured, high-standard sample gas and low-standard sample gas, and the sample gas, the high-standard sample gas and the low-standard sample gas enter the octane number measuring machine after passing through a pressure reducing valve.
In the utility model, the existence of the fuel pump in the liquid fuel supply system enables a certain oil pressure to be generated in the fuel system, stable fuel injection quantity is generated, and the quality of fuel atomization is higher. Therefore, the fuel can be completely atomized in the air inlet passage and enter the combustion chamber of the octane number tester after being fully mixed with air or gas fuel, and the fuel is combusted in a premixed combustion mode.
Compared with the prior art, the utility model has the following beneficial effects: the utility model can measure the octane number of the gas fuel and the octane number of the mixed gas fuel and liquid fuel, and solves the technical problem that the existing fuel octane number measuring machine can not measure the octane number of the gas fuel or the gas-liquid flexible fuel. The utility model can also measure the octane number of the liquid fuel with lower boiling point at normal temperature, and the specific proposal is that the fuels are heated and evaporated to be in a gas state, and then the gas fuel enters a gas fuel system device for octane number measurement. The utility model has the advantages of low design cost, simple structure and convenient installation, and has very outstanding application value in the field of fuel octane number measuring machines.
Drawings
FIG. 1 is a schematic diagram of a controller according to the present invention;
the device comprises a fuel tank 1, a fuel pump 2, a fuel pump 3, a pressure regulator 4, a pressure gauge 5, an oil injector 6, a first thermocouple 7, a pressure sensor 8, an oxygen sensor 9, a first heater 10, a vertical air inlet pipe 11, a combustion chamber of an octane number measuring machine 12, an octane number measuring machine body 13, an exhaust pipe 14, an exhaust post-processing device 15, a silencer 16, a front air inlet pipe 17, an oil return pipe 18, an air tank 19, a gas flow controller 20, a gas nozzle 21, a pressure reducing valve 22, an air tank switch 23, a rear air inlet pipe 24, a second heater 25, a second thermocouple 26, a gas fuel pipe 27, a third heater 28 and a third thermocouple.
Detailed Description
The following embodiments of the present invention are described in detail with reference to the accompanying drawings, and the embodiments and specific operations of the embodiments are provided on the premise of the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
Examples
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, an 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 post-processing device 14, a muffler 15, a front intake pipe 16, an oil return 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, 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, and a controller. The fuel tank 1, the fuel pump 2, the pressure regulator 3, the pressure gauge 4 and the fuel injector 5 are sequentially connected in series through a fuel pipeline, a combustion chamber 11 of the octane number measuring machine is arranged in an octane number measuring machine body 12, a front air inlet pipe 16, a vertical air inlet pipe 10 and a rear air inlet pipe 23 are sequentially connected together, an air outlet of the rear air inlet pipe 23 is connected with an air inlet of the combustion chamber 11 of the octane number measuring machine, an oxygen sensor 8, a pressure sensor 7, a first heater 9 and a first thermocouple 6 are sequentially arranged on the front air inlet pipe 17 along the air inlet flow direction, a second heater 24 is arranged on the rear air inlet pipe 23, and the fuel injector 5 is arranged on the vertical air inlet pipe 10; an air inlet of the exhaust pipe 13 is connected with an air outlet of a combustion chamber 11 of the octane number measuring machine, and an exhaust post-processing device 14 and a silencer 15 are sequentially arranged on the exhaust pipe 13 along the exhaust flow direction; two ports of the oil return pipe 19 are respectively communicated with the fuel tank 1 and the pressure regulator 3; the gas tank switch 22 is arranged at the gas outlet of the gas tank 18, the gas inlet of the gas fuel pipe 26 is connected with the gas outlet of the gas tank 18, the gas nozzle 20 is arranged at the gas outlet of the gas fuel pipe 26 and extends into the vertical gas inlet pipe 10, and the pressure reducing valve 21, the gas flow controller 19, the third heater 27 and the third thermocouple 28 are sequentially arranged on the gas fuel pipe 26 along the flow direction of the gas fuel; the controller is used for controlling the fuel 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 gas inlet pipe 10. The number of the fuel tank 1, the fuel pump 2, the pressure regulator 3, the pressure gauge 4 and the fuel injector 5 is four, and the number of the gas tanks 18 is three; the first heater 9, the second heater 24 and the third heater 27 are all electrically controlled heating devices.
In the utility model, the air intake system comprises a pressure sensor 7, an oxygen sensor 8, a first heater 9 and a second heater 24, wherein the heaters are arranged in the air intake pipe and are used for heating air or oil gas in the air intake pipe to enable the air or the oil gas to reach the test condition of the fuel octane number.
The exhaust system comprises an exhaust gas post-processing device 14 and a muffler 15, and an exhaust valve of the octane number measuring machine body 12 is connected with the exhaust system. The exhaust gas generated by burning the fuel in the combustion chamber 11 of the octane number measuring device passes through the exhaust gas post-treatment device 14 and the muffler 15 in order and enters the atmosphere.
The liquid fuel supply system comprises 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, wherein four fuel tanks 1 with the same volume are arranged, each fuel tank 1 is connected to the fuel pump 2 through the fuel pipe, and each electrical switch is used for controlling the opening and the closing of each fuel pump 2. The fuel pump 2 is connected to a pressure regulator 3, a pressure gauge 4 and a fuel injector 5 in this order through a fuel pipe. Furthermore, a return line 17 is provided to return excess fuel to the original fuel tank 1 via the pressure regulator 3.
The gas fuel supply system contains 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 flow rate of the gas discharged from the gas tank 18 is controlled by a gas flow rate controller 19 after being depressurized by a pressure reducing valve 21. The third heater 27 is used to heat the gas fuel to meet the testing condition of fuel octane number, and enters the air inlet pipe of the octane number tester body 12 through the gas nozzle 20.
The gas fuel supply system comprises three gas tanks 18, wherein sample gas to be measured, high-standard sample gas and low-standard sample gas are respectively placed in the three gas tanks, and enter the fuel octane number measuring machine after passing through a pressure reducing valve.
In the utility model, the existence of the fuel pump 2 in the liquid fuel supply system enables a certain oil pressure to be generated in the fuel system, thereby having stable fuel injection quantity and improving the quality of fuel atomization. Therefore, the fuel can be completely atomized in the intake passage and sufficiently mixed with air or gaseous fuel before entering the combustion chamber 11 of the octane number measuring machine to be combusted in the premixed combustion mode.
The implementation of the utility model comprises the following steps:
firstly, starting the octane number measuring machine body 12, starting an ignition switch of the octane number measuring machine, starting a control switch of the fuel pump 2 when a fuel system is in work, enabling fuel oil to be in an oil path, enabling the oil sprayed by the fuel injector 5 (generally using gasoline when a heat engine is used) to enter a combustion chamber 11 of the octane number measuring machine for combustion after being completely atomized in an air inlet pipe, and enabling the octane number measuring machine body 12 to be 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 simultaneously heated. When the control parameters of the octane number tester body 12 reach the test conditions of the fuel octane number, the octane number test of the oil sample fuel is started.
If the octane number of the gas-liquid flexible fuel is measured, a liquid fuel supply system controller needs to be opened. At the same time, the pressure reducing valve 21, the flow controller 19, the gas nozzle 20 in the gas system are opened, and the gas tank switch 22 of the gas fuel to be measured is opened at the same time. In a liquid fuel supply system, a controller is used to control the timing and pulse width of the fuel injection. In the gas fuel supply system, the flow rate of the gas fuel is controlled by a flow rate controller 19. The optimal oil-gas equivalence ratio is automatically searched through electronic unit control software, so that the maximum knock intensity can be found, and the fuel octane number can be accurately measured. Exhaust gas generated by burning fuel in the combustion chamber 11 of the octane number measuring device flows to an exhaust gas post-treatment device 14 through an exhaust pipe 13; the exhaust then passes through a muffler 16 and is exhausted to atmosphere.
If only the octane number of the gaseous fuel is to be measured, it is also necessary to operate according to the above heat engine program. And after the parameters of the gas fuel supply system and the gas inlet system reach the octane number test condition, namely after the heat engine is finished, closing each control unit of the liquid fuel supply system. And opening a gas pressure reducing valve in the gas fuel supply system and a gas tank switch of the measured gas fuel. And respectively measuring the octane numbers of the gas high standard sample fuel, the gas low standard sample fuel and the gas fuel to be measured. The exhaust gas generated by the combustion of the fuel in the combustion chamber 11 of the octane measuring device flows through the exhaust pipe 13 to the exhaust gas post-treatment device 14. The exhaust then passes through a muffler 16 and is exhausted to the atmosphere.
The octane number measuring device suitable for the gas fuel or the gas-liquid flexible fuel redesigns a fuel oil supply system of an original octane number measuring machine, designs a gas fuel supply system, and has a very outstanding application value in the field of octane number measuring machines.
The specific mode of operation of the present invention has been described. It is to be understood that the present invention is not limited to the particular manner of operation described above, and that various changes or modifications may be made by one skilled in the art within the scope of the claims without departing from the spirit of the utility model.
Claims (4)
1. A fuel octane number measuring device suitable for gas fuel or gas-liquid flexible fuel comprises a fuel tank (1), a fuel pump (2), a pressure regulator (3), a pressure gauge (4) and a fuel injector (5); the fuel tank (1), the fuel pump (2), the pressure regulator (3), the pressure gauge (4) and the fuel injector (5) are sequentially connected in series through a fuel pipeline, and the fuel tank-based octane number measuring device is characterized by further comprising a first thermocouple (6), a pressure sensor (7), an oxygen sensor (8), a first heater (9), a vertical air inlet pipe (10), a combustion chamber (11) of the octane number measuring machine, an octane number measuring machine body (12), an exhaust pipe (13), an exhaust post-treatment device (14), a silencer (15), a front air inlet pipe (16), an oil return pipe (17), an air tank (18), an air flow controller (19), an air nozzle (20), a pressure reducing valve (21), an air tank switch (22), a rear air inlet pipe (23), a second heater (24), a second thermocouple (25), an air fuel pipe (26), a third heater (27), a third thermocouple (28), A controller; a combustion chamber (11) of the octane number measuring machine is arranged in an octane number measuring machine body (12), a front air inlet pipe (16), a vertical air inlet pipe (10) and a rear air inlet pipe (23) are sequentially connected together, an air outlet of the rear air inlet pipe (23) is connected with an air inlet of the combustion chamber (11) of the octane number measuring machine, an oxygen sensor (8), a pressure sensor (7), a first heater (9) and a first thermocouple (6) are sequentially arranged on the front air inlet pipe (16) along the air inlet flow direction, a second heater (24) is arranged on the rear air inlet pipe (23), an oil injector (5) is arranged on the vertical air inlet pipe (10), an air inlet of an exhaust pipe (13) is connected with an air outlet of the combustion chamber (11) of the octane number measuring machine, an exhaust after-treatment device (14) and a fuel tank (15) are sequentially arranged on the exhaust pipe (13) along the exhaust flow direction, and two end ports of a return pipe (17) are respectively connected with a gas inlet (1), The pressure regulator (3) is communicated, the gas tank switch (22) is arranged at a gas outlet of the gas tank (18), a gas inlet of the gas fuel pipe (26) is connected with a gas outlet of the gas tank (18), the gas nozzle (20) is arranged at the gas outlet of the gas fuel pipe (26) and extends into the vertical gas inlet pipe (10), the pressure reducing valve (21), the gas flow controller (19), the third heater (27) and the third thermocouple (28) are sequentially arranged on the gas fuel pipe (26) along the flowing direction of gas fuel, and the controller is used for controlling the fuel injector (5), the first heater (9), the second heater (24) and the third heater (27).
2. A fuel octane measuring device for gaseous or gas-liquid flexible fuels according to claim 1, characterized in that the gas injection nozzle (20) is arranged at the lower end of the vertical intake pipe (10).
3. The device for measuring the octane number of a fuel suitable for a gaseous fuel or a gas-liquid flexible fuel according to claim 1, wherein the number of the fuel tank (1), the fuel pump (2), the pressure regulator (3), the pressure gauge (4), the fuel injector (5) and the gas tank (18) is more than two.
4. A fuel octane number measuring device suitable for gas fuel or gas-liquid flexible fuel according to claim 1, characterized in that the first heater (9), the second heater (24) and the third heater (27) are all electrically controlled heating devices.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123055764.5U CN216386919U (en) | 2021-12-07 | 2021-12-07 | Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123055764.5U CN216386919U (en) | 2021-12-07 | 2021-12-07 | Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel |
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| CN216386919U true CN216386919U (en) | 2022-04-26 |
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| CN202123055764.5U Active CN216386919U (en) | 2021-12-07 | 2021-12-07 | Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019085A (en) * | 2021-12-07 | 2022-02-08 | 上海交通大学 | Fuel octane number measuring device with electronic control fuel supply system |
| CN114019086A (en) * | 2021-12-07 | 2022-02-08 | 上海交通大学 | Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel |
| CN114034810A (en) * | 2021-12-07 | 2022-02-11 | 上海交通大学 | Fuel octane number measuring device suitable for low-pressure environment |
-
2021
- 2021-12-07 CN CN202123055764.5U patent/CN216386919U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019085A (en) * | 2021-12-07 | 2022-02-08 | 上海交通大学 | Fuel octane number measuring device with electronic control fuel supply system |
| CN114019086A (en) * | 2021-12-07 | 2022-02-08 | 上海交通大学 | Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel |
| CN114034810A (en) * | 2021-12-07 | 2022-02-11 | 上海交通大学 | Fuel octane number measuring device suitable for low-pressure environment |
| CN114019085B (en) * | 2021-12-07 | 2024-05-03 | 上海交通大学 | Fuel octane number measuring device with electric control fuel supply system |
| CN114019086B (en) * | 2021-12-07 | 2024-05-03 | 上海交通大学 | Octane number measuring device suitable for gas fuel or gas-liquid flexible fuel |
| CN114034810B (en) * | 2021-12-07 | 2024-05-03 | 上海交通大学 | Fuel octane number measuring device suitable for low-pressure environment |
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