CN113958434A - Methanol mixing pipe for generator set engine - Google Patents
Methanol mixing pipe for generator set engine Download PDFInfo
- Publication number
- CN113958434A CN113958434A CN202111276718.XA CN202111276718A CN113958434A CN 113958434 A CN113958434 A CN 113958434A CN 202111276718 A CN202111276718 A CN 202111276718A CN 113958434 A CN113958434 A CN 113958434A
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- China
- Prior art keywords
- mixing pipe
- methanol
- alcohol
- section
- pipe body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 324
- 238000002156 mixing Methods 0.000 title claims abstract description 92
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005507 spraying Methods 0.000 claims abstract description 45
- 239000002283 diesel fuel Substances 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a methanol mixing pipe for a generator set engine, which comprises a mixing pipe body and two alcohol spraying devices arranged at the upper end and the lower end of the mixing pipe body; the mixing pipe body is divided into an upper section, a middle section and a lower section, the middle section is obliquely arranged, the upper section is horizontally arranged and is connected with the middle section, the lower section is horizontally arranged and is connected with the middle section, and the upper section and the lower section are respectively positioned at the left side and the right side of the middle section; the upper straight section is connected with a far-end alcohol spraying device, and the lower part of the middle straight section is connected with a near-end alcohol spraying device. The invention leads the methanol to enter the mixing pipe through the nozzle and then enter the engine cylinder after being mixed with the cooled fresh air, and the diesel oil in the cylinder ignites the methanol in the cylinder after compression ignition, thereby realizing the co-combustion of dual fuels and providing power for the engine, thereby being widely applied to the generator set engine.
Description
Technical Field
The invention relates to a methanol mixer which is mainly applied to the technical field of engine air intake.
Background
Methanol, as a clean energy source, has been now starting to be tried on vehicle engines and marine engines: because of the limitation of the arrangement space, most of methanol mixing pipes on the vehicle engine are integrated on an air inlet pipe of the engine, the arrangement is tight, so that the methanol atomization effect is not ideal, the methanol mixing pipes cannot be fully fused with cooled air, the economical efficiency of the engine is poor, and the cooling effect after intercooling is not ideal; meanwhile, the methanol is combusted by the aid of the spark plug, and the methanol fuel is high in cost and is not suitable for engines of generator sets. Therefore, methanol feeding is not popularized in the field of generator set engines, and a methanol mixing pipe special for a methanol diesel dual-fuel generator set is not available at present.
Disclosure of Invention
The invention aims to solve the problem of providing a methanol mixing pipe, which enables methanol to enter the mixing pipe through a nozzle to be mixed with cooled fresh air and then enter an engine cylinder, diesel oil in the cylinder is ignited after compression ignition to realize dual-fuel co-combustion and provide power for the engine, thereby being widely applied to a generator set engine.
The invention relates to a methanol mixing pipe for a generator set engine, which comprises a mixing pipe body and two alcohol spraying devices arranged at the upper end and the lower end of the mixing pipe body; the mixing pipe body is divided into an upper section, a middle section and a lower section, the middle section is obliquely arranged, the upper section is horizontally arranged and is connected with the middle section, the lower section is horizontally arranged and is connected with the middle section, and the upper section and the lower section are respectively positioned at the left side and the right side of the middle section; the upper straight section is connected with a far-end alcohol spraying device, and the lower part of the middle straight section is connected with a near-end alcohol spraying device.
Furthermore, the far-end alcohol spraying device and the near-end alcohol spraying device both comprise an alcohol inlet pipe, an alcohol sprayer and an alcohol spraying control pin A; the alcohol sprayer is connected with the mixing pipe body, the alcohol inlet pipe is fixed at the closed end of the alcohol sprayer, the inlet of the alcohol inlet pipe is connected with the methanol pump, the alcohol spraying control pin A is fixed on the alcohol sprayer and connected with the methanol ECU to control the methanol spraying.
Furthermore, three nozzles of the alcohol sprayer are arranged in a triangular shape, and the central line of the triangular shape is superposed with the axis of the mixing pipe body.
Furthermore, three nozzles of an alcohol sprayer in the far-end alcohol spraying device are obliquely arranged, and the central line of the three nozzles is superposed with the axis of the middle straight section of the mixing pipe body; three nozzles of an alcohol sprayer in the alcohol spraying device at the near end are horizontally arranged, and the central line of the three nozzles is superposed with the axis of the lower straight section of the mixing pipe body.
Furthermore, support bolt holes are symmetrically formed in the front and back of the upper straight section of the mixing pipe body, support bolt holes are symmetrically formed in the front and back of the outlet section of the radiator, an inlet of the upper straight section of the mixing pipe body is connected with an outlet of the radiator through a rubber pipe, and the upper straight section of the mixing pipe body is connected with the radiator through a front mounting support and a rear mounting support; and a connecting flange is arranged at the outlet of the lower straight section of the mixing pipe body and is connected with an air inlet of an engine.
The methanol mixing tube has the advantages that: the two methanol injection devices are arranged at two ends of the methanol mixing pipe, namely, the two methanol injection devices are arranged in a split mode, so that methanol in the mixing pipe is fully mixed with air, the intake temperature of an engine is favorably reduced, the content of oxygen entering an engine cylinder is improved, and the economical efficiency of the engine is improved; nozzles in each injection device are distributed on the axis of the methanol mixing pipe in a triangular and concentrated manner, so that the methanol and air can be mixed conveniently, the occurrence of methanol wall hanging is reduced, the methanol diesel oil substitution ratio of the engine is reduced, and the economy of the engine is improved; each alcohol spraying device can work independently, and accurate control of the methanol pump is achieved; each alcohol spraying device is provided with a plurality of nozzles, so that the methanol spraying amount can be accurately controlled, and the methanol requirement of a high-horsepower engine can be met; connecting pipelines between the methanol mixing pipe and the radiator are reduced, and the rubber pipe is prevented from falling off through the mounting bracket, so that the risk of methanol leakage and the production cost are reduced; the methanol mixing pipe is connected with the end of the engine through a flange, so that the risk of methanol leakage is reduced. The methanol mixing pipe can be provided with a methanol injection control device on an air inlet pipe of the original diesel engine, so that methanol enters the mixing pipe through a nozzle, is mixed with cooled fresh air and then enters an engine cylinder, diesel oil in the cylinder is ignited after compression ignition, dual-fuel co-combustion is realized, power is provided for the engine, and the methanol mixing pipe is widely applied to a generator set engine.
Drawings
FIG. 1 is a perspective view of the methanol mixing pipe of the present invention (with the mounting bracket and the rubber tube removed).
FIG. 2 is a front view of a methanol mixing pipe according to the present invention.
FIG. 3 is a front view of the methanol mixing pipe of the present invention (with the mounting bracket and rubber tube removed).
Fig. 4 is a left side view of fig. 3.
FIG. 5 is a schematic diagram of the use of the methanol mixing tube of the present invention.
Detailed Description
Example 1
As can be seen from fig. 1, 2, 3 and 4, the methanol mixing pipe for the generator set engine of the present invention comprises a mixing pipe body 1, two alcohol spraying devices disposed at the upper and lower ends of the mixing pipe body 1; the mixing pipe body 1 is divided into an upper section, a middle section and a lower section, the middle section is obliquely arranged, the upper section is horizontally arranged and is connected with the middle section, the lower section is horizontally arranged and is connected with the middle section, and the upper section and the lower section are respectively positioned at the left side and the right side of the middle section; the upper straight section is connected with a far-end alcohol spraying device, and the lower part of the middle straight section is connected with a near-end alcohol spraying device.
When high-temperature and high-pressure air cooled by the radiator enters the methanol mixing pipe, the methanol spraying device sprays methanol into the methanol mixing pipe, so that the methanol and the air are fully mixed and then enter the engine combustion chamber: because the two ends of the mixing pipe are provided with the alcohol spraying devices, namely the alcohol spraying devices are respectively arranged at the position where the air enters the mixing pipe and the position where the air leaves the mixing pipe, the methanol and the air in the mixing pipe are fully mixed, the air inlet temperature of the engine is further reduced, the oxygen content entering the cylinder of the engine is improved, and the economical efficiency of the engine is improved; each alcohol spraying device can work independently, and accurate control of the methanol pump is achieved. In practical application, the number of the alcohol spraying devices is set according to the length of the mixing pipe, and can be a plurality of groups but not less than two groups, wherein two groups are necessarily arranged at the near end and the far end.
Example 2
As can be seen from fig. 1, 2, 3 and 4, the methanol mixing pipe of the present invention: the far-end alcohol spraying device and the near-end alcohol spraying device both comprise an alcohol inlet pipe 2, an alcohol sprayer 3 and an alcohol spraying control pin A4; the alcohol sprayer 3 is connected with the mixing pipe body 1, the alcohol inlet pipe 2 is fixed at the closed end of the alcohol sprayer 3, the inlet of the alcohol sprayer is connected with a methanol pump, the alcohol spraying control pin A4 is fixed on the alcohol sprayer 3 and is connected with a methanol ECU (electronic control Unit) to control the methanol spraying.
The methanol pump is used for pumping methanol from the methanol tank to the alcohol sprayer 3 through the alcohol inlet pipe 2 and providing high-pressure methanol liquid for the alcohol sprayer 3; the nozzle is controlled by an engine ECU through an alcohol spraying control pin A4, and the injection quantity of the methanol is controlled according to different working conditions, so that the accurate control of the methanol quantity is realized. Every spouts mellow wine device all to be provided with into mellow wine pipe, and the mellow wine pipe links to each other with a methanol pump, that is to say two spout mellow wine devices and respectively have own spouting mellow wine pump, and every spouts mellow wine device promptly and all can independent work to realize the accurate control of two methanol pumps.
Example 3
As can be seen from fig. 1, 2, 3 and 4, the methanol mixing pipe of the present invention: the three nozzles 8 of the alcohol sprayer 3 are arranged in a triangle, and the central line of the triangle is superposed with the axis of the mixing pipe body 1.
Specifically, the method comprises the following steps: three nozzles 8 of an alcohol sprayer in the far-end alcohol spraying device are obliquely arranged, and the central lines of the nozzles coincide with the axis of the middle straight section of the mixing pipe body 1; three nozzles 8 of an alcohol sprayer in the alcohol spraying device at the near end are horizontally arranged, and the central line of the nozzles coincides with the axis of the lower straight section of the mixing pipe body 1.
The methanol injection devices are arranged at two ends of the methanol mixing pipe, and the nozzles 8 in each injection device are distributed on the axis of the mixing pipe body 1 in a triangular and concentrated manner, so that the methanol and air can be mixed conveniently, the occurrence of the condition of methanol wall hanging is reduced, the methanol diesel substitution ratio of the engine is reduced, and the economical efficiency of the engine is improved.
Example 4
As can be seen from fig. 1, 2, 3, 4, and 5, the methanol mixing pipe of the present invention: support bolt holes 5 are symmetrically arranged in the front and back of an upper straight section of the mixing pipe body 1, support bolt holes are symmetrically arranged in the front and back of an outlet section of the radiator, an inlet of the upper straight section of the mixing pipe body 1 is connected with an outlet of the radiator through a rubber pipe 7, and the upper straight section of the mixing pipe body 1 is connected with the radiator through a front mounting support 6 and a rear mounting support 6; the outlet of the lower straight section of the mixing pipe body 1 is provided with a connecting flange which is connected with an air inlet of an engine.
The inlet end of the methanol mixing pipe is connected with the radiator through a pipe, and the outlet end of the methanol mixing pipe is connected with the engine through a connecting flange: the upper straight section of the mixing pipe is longer in length, so that only one rubber pipe is needed for connecting the inlet end of the mixing pipe with the radiator, and the risk of methanol leakage and the use cost are reduced; the rubber tube 7 connected between the radiator and the methanol mixing tube is reinforced through the mounting bracket 6, so that the methanol leakage caused by the falling of the rubber tube due to overlarge pressure is prevented, and the risk of methanol leakage and the use cost are further reduced.
The methanol mixing tube has the advantages that: the two methanol injection devices are arranged at two ends of the methanol mixing pipe, namely, the two methanol injection devices are arranged in a split mode, so that methanol in the mixing pipe is fully mixed with air, the intake temperature of an engine is favorably reduced, the content of oxygen entering an engine cylinder is improved, and the economical efficiency of the engine is improved; nozzles in each injection device are distributed on the axis of the methanol mixing pipe in a triangular and concentrated manner, so that the methanol and air can be mixed conveniently, the occurrence of methanol wall hanging is reduced, the methanol diesel oil substitution ratio of the engine is reduced, and the economy of the engine is improved; each alcohol spraying device can work independently, and accurate control of the methanol pump is achieved; each alcohol spraying device is provided with a plurality of nozzles, so that the methanol spraying amount can be accurately controlled, and the methanol requirement of a high-horsepower engine can be met; connecting pipelines between the methanol mixing pipe and the radiator are reduced, and the rubber pipe is prevented from falling off through the mounting bracket, so that the risk of methanol leakage and the production cost are reduced; the methanol mixing pipe is connected with the end of the engine through a flange, so that the risk of methanol leakage is reduced.
The methanol mixing pipe can be provided with a methanol injection control device on an air inlet pipe of the original diesel engine, so that methanol enters the mixing pipe through a nozzle to be mixed with cooled fresh air and then enters an engine cylinder, diesel oil in the cylinder is ignited after compression ignition, dual-fuel co-combustion is realized, power is provided for the engine, and the methanol mixing pipe is widely applied toThe engine is used for the generator set; wherein, the methanol is sprayed into the diesel oil to replace 30 to 60 percent of diesel oil, thereby greatly reducing CO2、NOXAnd the like, the emission of pollutants and the use cost.
The engine of the generator set using the methanol mixing pipe has high thermal efficiency, good economical efficiency, easy start and great adaptability to various power generation scenes: the system has the advantages of flexibility, less investment, capability of starting at any time and the like, and can be widely applied to various departments of communication, mining, road building, forest areas, farmland drainage and irrigation, field construction and the like; meanwhile, the generator is used as an alternating current power supply device in a self-contained power station, is suitable for occasions such as communication bureau stations, mining areas, forest areas, pasturing areas, national defense projects and the like which cannot be transmitted by a mains power grid, and can independently supply power as a main power supply for power and illumination; in addition, for the area with commercial power, the power supply reliability requirement is high, the power failure is not allowed or the unit (such as communication, bank, hotel and airport) which can rapidly recover the power supply within a few seconds is required, the diesel generator can also be used as a standby emergency power supply, and once the commercial power fails, a stable alternating current power supply can be rapidly provided.
Claims (5)
1. The utility model provides a methyl alcohol mixing tube for generating set engine which characterized by: the device comprises a mixing pipe body (1) and two alcohol spraying devices arranged at the upper end and the lower end of the mixing pipe body (1); the mixing pipe body (1) is divided into an upper section, a middle section and a lower section, the middle section is obliquely arranged, the upper section is horizontally arranged and is connected with the middle section, the lower section is horizontally arranged and is connected with the middle section, and the upper section and the lower section are respectively positioned at the left side and the right side of the middle section; the upper straight section is connected with a far-end alcohol spraying device, and the lower part of the middle straight section is connected with a near-end alcohol spraying device.
2. The methanol mixing pipe of claim 1, wherein: the far-end alcohol spraying device and the near-end alcohol spraying device both comprise an alcohol inlet pipe (2), an alcohol sprayer (3) and an alcohol spraying control pin A (4); the alcohol sprayer (3) is connected with the mixing pipe body (1), the alcohol inlet pipe (2) is fixed at the closed end of the alcohol sprayer (3), the inlet of the alcohol inlet pipe is connected with a methanol pump, and the alcohol spraying control pin A (4) is fixed on the alcohol sprayer (3) and connected with a methanol ECU (electronic control unit) to control the methanol spraying.
3. The methanol mixing pipe of claim 2, wherein: three nozzles (8) of the alcohol sprayer (3) are arranged in a triangle, and the central line of the triangle is superposed with the axis of the mixing pipe body (1).
4. The methanol mixing pipe of claim 3, wherein: three nozzles (8) of an alcohol sprayer in the far-end alcohol spraying device are obliquely arranged, and the central lines of the nozzles coincide with the axis of the middle straight section of the mixing pipe body (1); three nozzles (8) of an alcohol sprayer in the alcohol spraying device at the near end are horizontally arranged, and the central line of the three nozzles coincides with the axis of the lower straight section of the mixing pipe body (1).
5. The methanol mixing pipe of claim 3, wherein: support bolt holes (5) are symmetrically formed in the front and back of an upper straight section of the mixing pipe body (1), support bolt holes are symmetrically formed in the front and back of an outlet section of the radiator, an inlet of the upper straight section of the mixing pipe body (1) is connected with an outlet of the radiator through a rubber pipe (7), and the upper straight section of the mixing pipe body (1) is connected with the radiator through a front mounting support and a rear mounting support (6); the outlet of the lower straight section of the mixing pipe body (1) is provided with a connecting flange which is connected with an air inlet of an engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276718.XA CN113958434A (en) | 2021-10-29 | 2021-10-29 | Methanol mixing pipe for generator set engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276718.XA CN113958434A (en) | 2021-10-29 | 2021-10-29 | Methanol mixing pipe for generator set engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113958434A true CN113958434A (en) | 2022-01-21 |
Family
ID=79468447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111276718.XA Pending CN113958434A (en) | 2021-10-29 | 2021-10-29 | Methanol mixing pipe for generator set engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958434A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1593852A (en) * | 1976-11-05 | 1981-07-22 | Burmah Oil Trading Ltd | Compression-ignition engines |
| CN110454289A (en) * | 2019-08-09 | 2019-11-15 | 天津大学 | A kind of diesel locomotive engine diesel oil methanol bifuel system and method |
| CN210068340U (en) * | 2019-06-20 | 2020-02-14 | 淄柴动力有限公司 | Marine methanol/diesel dual-fuel engine mixer |
| CN211777765U (en) * | 2020-04-08 | 2020-10-27 | 淄柴动力有限公司 | Integrated methanol/diesel dual-fuel engine air inlet pipe |
| CN113404597A (en) * | 2021-07-29 | 2021-09-17 | 安徽华菱汽车有限公司 | Dual-fuel engine |
| CN113503217A (en) * | 2021-06-15 | 2021-10-15 | 中节能科技投资有限公司 | Multi-nozzle methanol ejector assembly structure |
-
2021
- 2021-10-29 CN CN202111276718.XA patent/CN113958434A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1593852A (en) * | 1976-11-05 | 1981-07-22 | Burmah Oil Trading Ltd | Compression-ignition engines |
| CN210068340U (en) * | 2019-06-20 | 2020-02-14 | 淄柴动力有限公司 | Marine methanol/diesel dual-fuel engine mixer |
| CN110454289A (en) * | 2019-08-09 | 2019-11-15 | 天津大学 | A kind of diesel locomotive engine diesel oil methanol bifuel system and method |
| CN211777765U (en) * | 2020-04-08 | 2020-10-27 | 淄柴动力有限公司 | Integrated methanol/diesel dual-fuel engine air inlet pipe |
| CN113503217A (en) * | 2021-06-15 | 2021-10-15 | 中节能科技投资有限公司 | Multi-nozzle methanol ejector assembly structure |
| CN113404597A (en) * | 2021-07-29 | 2021-09-17 | 安徽华菱汽车有限公司 | Dual-fuel engine |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220121 |
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| RJ01 | Rejection of invention patent application after publication |