CN213807911U - Single-nozzle dual-fuel supply system of methanol engine - Google Patents
Single-nozzle dual-fuel supply system of methanol engine Download PDFInfo
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- CN213807911U CN213807911U CN202022094997.5U CN202022094997U CN213807911U CN 213807911 U CN213807911 U CN 213807911U CN 202022094997 U CN202022094997 U CN 202022094997U CN 213807911 U CN213807911 U CN 213807911U
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Abstract
The utility model discloses a methanol engine single-nozzle dual-fuel supply system, which comprises a methanol fuel supply system, a gasoline fuel supply system, a single-nozzle dual-fuel injector and a combustion device, wherein the methanol fuel supply system and the gasoline fuel supply system are connected through the single-nozzle dual-fuel injector, and the single-nozzle dual-fuel injector is connected with the combustion device; the utility model discloses with one set of injection system of petrol-methyl alcohol sharing, reduce purchasing cost and spare part administrative cost.
Description
Technical Field
The utility model relates to a methanol engine cold start technique especially relates to a methanol engine single nozzle dual fuel feeding system.
Background
Under the conditions of energy crisis and more tension of traditional fuel resources, diversified alternative fuels become a new trend, and the research and development of methanol fuel engines are promoted due to the characteristics of mature technology, low production cost, rich yield and the like of the coal-based methanol. Due to the characteristics of high latent heat of methanol gasification and high flash point, the methanol fuel engine has the problems of difficult cold start, no discharge failure and the like. In order to solve the technical problem, the methanol engine is provided with two sets of independent gasoline and methanol fuel supply systems, and the injection of an intake manifold or an intake duct is mostly adopted. In the starting stage of the engine, the engine takes gasoline as fuel and is mixed with air in an intake manifold, and after the engine is preheated to a certain temperature, the engine is switched to a methanol fuel working mode.
The prior art has the following technical problems: 1. two sets of independent supply systems are adopted, so that the cost is high; 2. because the methanol engine is mostly changed on the original gasoline and diesel engine, the arrangement difficulty of the engine is increased by adding a new system; 3. the injection pressure of the injection way of the air inlet manifold and the air passage is low, the atomization is poor, the phenomenon that the oil beam of the nozzle loses the wall is easily generated, and the combustion is insufficient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned technical problem, provide a methanol engine single nozzle dual fuel feeding system, the utility model discloses with one set of injection system of petrol-methyl alcohol sharing, reduce purchasing cost and spare part administrative cost.
The utility model provides a technical scheme that above-mentioned technical problem adopted is: a methanol engine single-nozzle dual-fuel supply system comprises a methanol fuel supply system, a gasoline fuel supply system, a single-nozzle dual-fuel injector and a combustion device, wherein the methanol fuel supply system and the gasoline fuel supply system are connected through the single-nozzle dual-fuel injector, and the single-nozzle dual-fuel injector is connected with the combustion device; the methanol fuel supply system comprises a methanol fuel tank, a methanol pump and a methanol inlet of an oil injector, and the methanol fuel tank, the methanol pump, the methanol inlet of the oil injector and the single-nozzle dual-fuel oil injector are sequentially connected; the gasoline fuel supply system comprises a gasoline tank, a gasoline pump and a gasoline inlet of a fuel injector, wherein the gasoline tank, the gasoline pump, the gasoline inlet of the fuel injector and the single-nozzle dual-fuel injector are sequentially connected. When the gasoline engine works, the gasoline fuel inlet channel is opened, the methanol fuel inlet channel is closed, the gasoline pump pumps gasoline out of the gasoline fuel tank and enters the single-nozzle dual-fuel oil injector, and the gasoline is atomized and injected into the fuel chamber at high pressure for combustion; and when the temperature reaches a certain temperature, opening the methanol fuel inlet channel, closing the gasoline fuel inlet channel, pumping the methanol from the methanol fuel tank by the methanol pump, feeding the methanol into the single-nozzle dual-fuel oil injector, and atomizing and injecting the methanol into the fuel chamber at high pressure for combustion. By the technical scheme, the gasoline-methanol shares one set of injection system, so that the purchasing cost and the part management cost are reduced, and meanwhile, the gasoline-methanol is used as fuel, the gasoline fuel is only used for cold start and low-temperature operation, and the methanol fuel is used under other working conditions, so that the problem of difficult cold start is solved.
Preferably, the methanol fuel supply system further comprises a methanol fuel pressure regulating valve, and the methanol fuel pressure regulating valve is respectively connected with a methanol inlet of the oil injector, a methanol fuel tank and a methanol pump through pipelines; the gasoline fuel supply system also comprises a gasoline fuel pressure regulating valve which is respectively connected with the gasoline inlet of the oil injector, the gasoline tank and the gasoline pump through pipelines. The methanol fuel pressure regulating valve is used for regulating the pressure of a methanol fuel supply system, a methanol pump outputs a certain flow of methanol, and the pressure regulation is realized by the methanol fuel pressure regulating valve in order to ensure that the pressure of the methanol fuel supply system is the pressure required by the single-nozzle dual-fuel oil injector; the gasoline fuel pressure regulating valve is used for regulating the pressure of a gasoline fuel supply system, the gasoline pump outputs gasoline with a certain flow, and the gasoline fuel pressure regulating valve is needed to realize the purpose of ensuring that the pressure of the gasoline fuel supply system is the pressure required by the single-nozzle dual-fuel injector.
Preferably, the methanol fuel supply system further comprises a methanol filter, and the methanol filter is respectively connected with the methanol pump and the methanol fuel pressure regulating valve; the gasoline fuel supply system also comprises a gasoline filter, and the gasoline filter is respectively connected with the gasoline fuel pressure regulating valve and the gasoline pump. The methanol filter can filter impurities in the methanol, and the gasoline filter can filter impurities in the gasoline, so that the working stability and reliability of the fuel supply system are improved.
Preferably, the combustion device comprises a cylinder body and a combustion chamber, the combustion chamber is arranged in the cylinder body, an air inlet channel and an air outlet channel are arranged on the cylinder body, and the combustion chamber is respectively connected with the air inlet channel and the air outlet channel.
Preferably, an intake valve is arranged between the intake passage and the combustion chamber, and an exhaust valve is arranged between the exhaust passage and the combustion chamber. By controlling the control of the intake and exhaust valves, the time of fuel combustion can be controlled.
Preferably, the combustion chamber is W-shaped.
Preferably, the water-cooling device further comprises an ECU, wherein a water temperature sensor for detecting the water temperature is arranged on the cylinder body, and the water temperature sensor is connected with the ECU. Water is arranged in the combustion device, gasoline fuel is adopted for combustion in the cold start stage of the methanol engine, at the moment, the single-nozzle dual-fuel oil injector closes the methanol fuel inlet channel, and opens the gasoline fuel inlet channel. When the water temperature reaches the preset temperature, the ECU reads a water temperature signal through the water temperature sensor, sends an instruction to the single-nozzle dual-fuel oil injector, opens the methanol fuel inlet channel and closes the gasoline fuel inlet channel.
Preferably, an electric throttle and an air inlet temperature and pressure sensor for detecting the air temperature and the air pressure after the air inlet is pressurized at the front part and the rear part of the electric throttle are arranged on the air inlet channel, and the air inlet temperature and pressure sensor is connected with the ECU. Through the setting of the air inlet temperature and pressure sensor, the air inlet temperature and pressure sensor feeds back the information of the air temperature and the air pressure after the pressurization at the front part of the electric throttle and the rear part of the electric throttle to the ECU, and the ECU corrects the oil injection quantity and the ignition timing angle according to the received information.
Preferably, the exhaust passage is also provided with an oxygen sensor for monitoring the oxygen content in the exhaust gas, and the oxygen sensor is connected with the ECU. The oxygen sensor feeds back to the ECU through a voltage signal, and the ECU controls the air-fuel ratio according to the signal.
Preferably, the cylinder block is further provided with a rotation speed sensor for acquiring the rotation speed of the engine and the accurate angle position of the crankshaft, and the rotation speed sensor is connected with the ECU. The ECU is caused to determine the fuel injection time and ignition timing by the arrangement of the rotation speed sensor.
The utility model has the advantages that:
1. the utility model discloses regard as fuel with petrol-methyl alcohol, only cold start and low temperature operation adopt petrol fuel, all adopt methyl alcohol fuel under all the other operating modes, solve the problem of cold start difficulty.
2. And the gasoline-methanol share one set of injection system, so that the purchasing cost and the part management cost are reduced.
3. The utility model discloses can reduce the engine and arrange the degree of difficulty, change spare part because of this arrangement influence is less.
4. The utility model discloses the oil spout mode adopts the direct injection of jar, and injection pressure is high, and the atomized particles is thin, and distributes evenly for the burning is more abundant, improves fuel economy, reduces exhaust emissions pollutant concentration.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the combustion apparatus.
In the figure: 11. a methanol fuel tank, 12, a methanol pump, 13, a methanol filter, 14, a methanol fuel pressure regulating valve, 15, an injector methanol inlet, 21, a gasoline tank, 22, a gasoline pump, 23, a gasoline filter, 24, a gasoline fuel pressure regulating valve, 25, an injector gasoline inlet, 3, a single-nozzle dual-fuel injector, 41, a cylinder body, 42, an air inlet passage, 43, an exhaust passage, 44, an air inlet valve, 45, an exhaust valve, 46, a combustion chamber, 5, an ECU, 6, an electric throttle, 7, an air inlet temperature and pressure sensor, 8, a water temperature sensor, 9, a rotating speed sensor, 10 and an oxygen sensor,
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in fig. 1-2, the utility model relates to a methanol engine single-nozzle dual-fuel supply system, which comprises a methanol fuel supply system, a gasoline fuel supply system, a single-nozzle dual-fuel injector 3 and a combustion device, wherein the methanol fuel supply system and the gasoline fuel supply system are connected through the single-nozzle dual-fuel injector 3, and the single-nozzle dual-fuel injector 3 is connected with the combustion device; the methanol fuel supply system comprises a methanol fuel tank 11, a methanol pump 12 and a methanol inlet 15 of an oil injector, wherein the methanol fuel tank 11, the methanol pump 12, the methanol inlet 15 of the oil injector and the single-nozzle dual-fuel oil injector 3 are sequentially connected; the gasoline fuel supply system comprises a gasoline tank 21, a gasoline pump 22 and a gasoline inlet 25 of a fuel injector, wherein the gasoline tank 21, the gasoline pump 22, the gasoline inlet 25 of the fuel injector and the single-nozzle dual-fuel injector 3 are sequentially connected.
The methanol fuel supply system also comprises a methanol fuel pressure regulating valve 14, and the methanol fuel pressure regulating valve 14 is respectively connected with a methanol inlet 15 of an oil injector, a methanol fuel tank 11 and a methanol pump 12 through pipelines; the gasoline fuel supply system also comprises a gasoline fuel pressure regulating valve 24, and the gasoline fuel pressure regulating valve 24 is respectively connected with a gasoline inlet 25 of an injector, the gasoline tank 21 and the gasoline pump 22 through pipelines.
The methanol fuel supply system also comprises a methanol filter 13, and the methanol filter 13 is respectively connected with a methanol pump 12 and a methanol fuel pressure regulating valve 14; the gasoline fuel supply system further comprises a gasoline filter 23, and the gasoline filter 23 is respectively connected with the gasoline fuel pressure regulating valve 24 and the gasoline pump 22.
The combustion device comprises a cylinder body 41 and a combustion chamber 46, wherein the combustion chamber 46 is arranged in the cylinder body 41, an air inlet channel 42 and an air outlet channel 43 are arranged on the cylinder body 41, and the combustion chamber 46 is respectively connected with the air inlet channel 42 and the air outlet channel 43.
An intake valve 44 is provided between the intake passage 42 and the combustion chamber 46, and an exhaust valve 45 is provided between the exhaust passage 43 and the combustion chamber 46.
The combustion chamber 46 is W-shaped.
The water temperature sensor 8 is arranged on the cylinder body 41 and used for detecting water temperature, and the water temperature sensor 8 is connected with the ECU 5.
The air inlet passage 42 is provided with an electric throttle 6 and an air inlet temperature and pressure sensor 7 for detecting the temperature and the pressure of air after supercharging at two positions in front of the electric throttle 6 and behind the electric throttle 6, and the air inlet temperature and pressure sensor 7 is connected with the ECU 5.
The exhaust passage 43 is also provided with an oxygen sensor 10 for monitoring the oxygen content in the exhaust gas, and the oxygen sensor 10 is connected with the ECU 5.
The cylinder block 41 is also provided with a rotation speed sensor 9 for acquiring the rotation speed of the engine and the accurate angle position of the crankshaft, and the rotation speed sensor 9 is connected with the ECU 5.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A methanol engine single-nozzle dual-fuel supply system is characterized in that: the methanol fuel supply system is connected with the gasoline fuel supply system through the single-nozzle dual-fuel oil injector (3), and the single-nozzle dual-fuel oil injector (3) is connected with the combustion device; the methanol fuel supply system comprises a methanol fuel tank (11), a methanol pump (12) and a methanol inlet (15) of an oil injector, wherein the methanol fuel tank (11), the methanol pump (12), the methanol inlet (15) of the oil injector and the single-nozzle dual-fuel oil injector (3) are sequentially connected; the gasoline fuel supply system comprises a gasoline tank (21), a gasoline pump (22) and a fuel injector gasoline inlet (25), wherein the gasoline tank (21), the gasoline pump (22), the fuel injector gasoline inlet (25) and the single-nozzle dual-fuel injector (3) are sequentially connected.
2. The methanol engine single-nozzle dual-fuel supply system of claim 1, characterized in that: the methanol fuel supply system also comprises a methanol fuel pressure regulating valve (14), and the methanol fuel pressure regulating valve (14) is respectively connected with a methanol inlet (15) of an oil injector, a methanol fuel tank (11) and a methanol pump (12) through pipelines; the gasoline fuel supply system also comprises a gasoline fuel pressure regulating valve (24), and the gasoline fuel pressure regulating valve (24) is respectively connected with a gasoline inlet (25) of the oil injector, a gasoline tank (21) and a gasoline pump (22) through pipelines.
3. The methanol engine single-nozzle dual-fuel supply system of claim 2, characterized in that: the methanol fuel supply system also comprises a methanol filter (13), and the methanol filter (13) is respectively connected with the methanol pump (12) and the methanol fuel pressure regulating valve (14); the gasoline fuel supply system also comprises a gasoline filter (23), and the gasoline filter (23) is respectively connected with the gasoline fuel pressure regulating valve (24) and the gasoline pump (22).
4. The methanol engine single-nozzle dual-fuel supply system as claimed in claim 1, 2 or 3, wherein: the combustion device comprises a cylinder body (41) and a combustion chamber (46), wherein the combustion chamber (46) is arranged in the cylinder body (41), an air inlet channel (42) and an air outlet channel (43) are arranged on the cylinder body (41), and the combustion chamber (46) is respectively connected with the air inlet channel (42) and the air outlet channel (43).
5. The methanol engine single-nozzle dual-fuel supply system of claim 4, characterized in that: an intake valve (44) is arranged between the intake passage (42) and the combustion chamber (46), and an exhaust valve (45) is arranged between the exhaust passage (43) and the combustion chamber (46).
6. The methanol engine single-nozzle dual-fuel supply system of claim 5, characterized in that: the combustion chamber (46) is W-shaped.
7. The methanol engine single-nozzle dual-fuel supply system of claim 4, characterized in that: the water temperature sensor (8) is arranged on the cylinder body (41) and used for detecting the water temperature, and the water temperature sensor (8) is connected with the ECU (5).
8. The methanol engine single-nozzle dual-fuel supply system of claim 7, characterized in that: and an electric throttle (6) and an air inlet temperature and pressure sensor (7) for detecting the air temperature and the air pressure after the air is pressurized at two positions in front of the electric throttle (6) and behind the electric throttle (6) are arranged on the air inlet (42), and the air inlet temperature and pressure sensor (7) is connected with the ECU (5).
9. The methanol engine single-nozzle dual-fuel supply system as claimed in claim 7 or 8, wherein: the exhaust passage (43) is also provided with an oxygen sensor (10) for monitoring the oxygen content in the exhaust gas, and the oxygen sensor (10) is connected with the ECU (5).
10. The methanol engine single-nozzle dual-fuel supply system of claim 9, wherein: the cylinder body (41) is also provided with a rotating speed sensor (9) used for acquiring the rotating speed of the engine and the accurate angle position of the crankshaft, and the rotating speed sensor (9) is connected with the ECU (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022094997.5U CN213807911U (en) | 2020-09-22 | 2020-09-22 | Single-nozzle dual-fuel supply system of methanol engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022094997.5U CN213807911U (en) | 2020-09-22 | 2020-09-22 | Single-nozzle dual-fuel supply system of methanol engine |
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| CN213807911U true CN213807911U (en) | 2021-07-27 |
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| CN202022094997.5U Active CN213807911U (en) | 2020-09-22 | 2020-09-22 | Single-nozzle dual-fuel supply system of methanol engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537985A (en) * | 2023-07-06 | 2023-08-04 | 潍柴动力股份有限公司 | Engine fuel injection device and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537985A (en) * | 2023-07-06 | 2023-08-04 | 潍柴动力股份有限公司 | Engine fuel injection device and control method |
| CN116537985B (en) * | 2023-07-06 | 2023-10-20 | 潍柴动力股份有限公司 | Engine fuel injection device and control method |
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