38 results about "Octane rating" patented technology

The present application relates to the technical field of aviation gasoline, and discloses unleaded aviation gasoline and a preparation method thereof.The unleaded aviation gasoline comprises: 75-85 wt% of polymethylbenzene, and 15-25 wt% of at least two of alkylate, a side line distillation component of an alkylate device, light naphtha and isopentane; wherein the motor octane number of the polymethylbenzene is not less than 108.The product quality index of the unleaded aviation gasoline meets the standard of the American Society for Testing and Materials, that is, the technical requirement of ASTM D7719-2018 high-aromatic unleaded aviation gasoline.The unleaded aviation gasoline has the characteristics of good component continuity, stable combustion and high motor octane number, and meets the high-standard use requirement of unleaded and high-octane aviation gasoline.

The utility model discloses an online real-time gasoline octane number detection monitor, which relates to the technical field of gasoline detection and comprises a crude oil process pipeline, a U-shaped detection pipe and a mounting plate. The device comprises a U-shaped detection pipe, the U-shaped detection pipe is fixedly installed at the bottom of a crude oil process pipeline, the two ends of the U-shaped detection pipe are both communicated with the crude oil process pipeline, a first valve body and a second valve body are installed in one end of the U-shaped detection pipe from top to bottom, and a reflux pump and a partition plate located above the reflux pump are installed in the other end of the U-shaped detection pipe. The PLC controls the servo motor to open or close the first valve body and the second valve body through the screw rod, the inner threaded pipe, the rack and the gear, an oil product is sampled, the octane number of the oil product is detected by the measuring probe, a detection result is transmitted to the measuring instrument and then passes through the measuring instrument, and the detection result is transmitted to a user side through a wireless data transmission function of the PLC. On-line detection and monitoring on the quality of crude oil are realized, and the quality of the oil product during delivery is ensured.

This invention relates to the field of new energy and liquid carbon fuel technology, specifically to a high-cleanliness methanol alternative fuel for vehicles and its preparation method. The method includes raw material mixing and vaporization, atmospheric pressure gas-phase catalysis, and multi-stage condensation and separation steps. The method combines base methanol with hydrocarbon additives and introduces them into a composite mixed-bed molecular sieve catalyst containing aromatic cascade, etherification, and alkylation active units, as well as an anti-coking flow carrier. Its core principle is to enhance the octane number by following the atmospheric pressure gas-phase aromatization and cascade mechanism, generate ethers in situ as phase stabilizers and hydrogen bonding agents, and utilize a mesoporous carrier to reduce steric hindrance and promote macromolecular desorption. This invention differs from the high-pressure reaction conditions of traditional methanol-to-gasoline processes by overcoming the defects of methanol fuel phase separation upon contact with water and catalyst coking through a one-step atmospheric pressure gas-phase conversion. It eliminates the need for physical co-solvents and significantly extends the catalyst regeneration cycle.

The application discloses an engine ignition angle adjusting method, device, equipment and storage medium, and the method comprises the steps of detecting the knock intensity of the engine, controlling the ignition angle of the engine according to the knock intensity, and adjusting the ignition angle of the current gasoline octane number according to the knock back angle of the ignition angle. According to the application, the ignition angle of the engine is controlled according to the knock intensity, and the ignition angle of the current gasoline octane number is adjusted according to the knock back angle of the controlled ignition angle, so that the ignition angle can be adjusted according to different gasoline octane numbers, the knock intensity of the ignition angle at the time of ignition is adjusted, and the performance of the engine is improved.

A high-octane renewable base gasoline composed of a reformate renewable base component and an isomerate base component is described, wherein said base gasoline is present in a high octane fully renewable gasoline fuel composition.

To provide an engine system capable of improving combustion stability while preventing constant combustion.SOLUTION: A fuel injection device 11,12 that injects a main fuel, a first fuel having a combustion speed faster than that of the main fuel, and a second fuel having an octane number higher than that of the main fuel into the combustion chamber 5 as a fuel is provided, and when an engine load is less than a switching load Tx, the main fuel and the first fuel are injected into the combustion chamber 5; Further, the fuel injection device 11,12 is controlled so that the first fuel is injected after the main fuel is injected, and when the engine load is the switching load Tx or higher, the fuel injection device 11,12 is controlled so that the main fuel and the second fuel are injected into the combustion chamber 5 and the second fuel is injected after the main fuel is injected.SELECTED DRAWING: Figure 5

A gasoline fuel composition for a spark-ignition internal combustion engine, the gasoline fuel composition comprising (a) renewable naphtha at a level of 40% to 60% volume / volume, (b) an oxidized hydrocarbon at a level of 15% to 25% volume / volume, and (c) an aromatic hydrocarbon at a level of 25% to 45% volume / volume, 5 wherein the gasoline fuel composition has an RON of 87 or greater. Although the low octane number of renewable naphtha typically strictly limits its blendability in gasoline to a low level, the fuel composition of the invention allows the use of renewable naphtha at significant levels while maintaining a good octane rating for the entire composition.

The invention provides a catalytic diesel oil hydro-conversion method which comprises the following steps: (1) catalytic diesel oil and hydrogen enter a hydrofining reaction unit to react, and a hydrofining material flow is obtained after the reaction; (2) separating the hydrofined material flow obtained in the step (1) in a separator to obtain a light material flow and a heavy material flow; (3) the heavy material flow obtained in the step (2) enters a hydrocracking reaction unit to react, and a hydrocracking material flow is obtained after the reaction; and (4) separating the hydrocracking material flow obtained in the step (3) to obtain gas, gasoline and diesel oil. According to the conversion method, a high-octane gasoline product can be obtained at the initial stage of start-up by optimizing the technological process, and meanwhile, the cetane number of the diesel fraction is remarkably increased.

This invention provides a special lubricating oil for multi-fuel spark-ignition two-stroke engines used in unmanned aerial vehicles (UAVs) and its preparation method, belonging to the field of lubricating oil technology. The special lubricating oil for multi-fuel spark-ignition two-stroke engines for UAVs comprises, by weight percentage: base oil, 66-81 wt%; additives, 15-20 wt%; and diluent, 4-14 wt%. The base oil includes hydrocarbon-based oil, polyisobutylene, and synthetic esters, wherein the hydrocarbon-based oil is a mixture of 70-85 wt% Group III hydrogenated mineral oil and 15-30 wt% Group IV hydrocarbon synthetic oil. The additives include a composite detergent-dispersant, a composite anti-adhesion detergent, a friction-reducing and anti-wear agent, an antioxidant, an octane number improver, and a compounding agent, wherein the octane number improver is N-methylaniline. The diluent is aviation kerosene.

The invention relates to the technical field of chemical engineering, in particular to a gasoline octane number prediction method based on a near infrared spectrum. According to the near infrared spectrum-based gasoline octane number prediction method provided by the invention, when a partial least square method correction model is constructed, a target spectrum in a gasoline sample is preprocessed for at least one time, the preprocessed spectrums are spliced to obtain a spliced spectrum, then a target feature point is selected from the spliced spectrum, and the octane number of the gasoline sample is predicted according to the target feature point. Then taking the target feature point as a target feature variable, constructing a partial least square correction model according to the spliced spectrum and the octane number in each gasoline sample, finally performing at least one pretreatment on the near infrared spectrum to be detected of the gasoline sample to be detected, and then performing splicing treatment to obtain a spliced spectrum to be detected, and the spliced spectrum to be measured is input into the partial least square method correction model for prediction to generate a predicted octane number, so that the prediction accuracy is improved.

The utility model discloses a self-gravity infrared system octane number standard fuel automatic sample matching device, which relates to the technical field of sample matching and comprises a sample matching frame, a supporting plate is arranged on one side of the inner top of the sample matching frame, a plurality of gallon barrels are arranged on the top of the supporting plate, and weight detection components are arranged at the bottoms of the gallon barrels. A plurality of measuring tubes are arranged on the other side of the top of the sample distribution frame, a mixing assembly matched with the measuring tubes is arranged on one side of the inner bottom of the sample distribution frame, and infrared detection devices matched with the mixing assembly are arranged at the two ends of the outer portion of the sample distribution frame. According to the utility model, the weight of materials in the gallon barrel can be monitored in real time, the accuracy of each-time sample preparation is ensured, according to weight data fed back by the weighing sensor, when the materials in the gallon barrel reach a fixed value of blanking, the pinch valve is opened through the controller, the materials are conveyed into the hose, and the materials naturally flow into the hose under the action of self-gravity, so that the sampling accuracy is ensured. And no additional pump or pressurization equipment is needed.

The present application relates to the technical field of fuel production, and discloses high-octane aviation fuel production equipment, which comprises a raw material conveying pipeline, an input end of a preheater connected to an output end of the raw material conveying pipeline, a separation assembly, a non-condensable gas recovery assembly and a sealing assembly, the raw material conveying pipeline is externally provided with the separation assembly, and the separation assembly comprises a vertical tower body, a reboiler and a cooler. The high-octane aviation fuel production equipment is used for improving the octane value of aviation fuel and reducing the amount of lead additives, raw materials are conveyed through the raw material conveying pipeline, preheated by the preheater, sent into the vertical tower body from multiple feeding ports through the multi-head pipe, subjected to multi-stage separation of the tower tray and rectification filler and fine separation of the coalescence separation inner part, and subjected to efficient rectification separation, so that the octane value of industrial isooctane is improved, and the amount of lead additives in the preparation of aviation fuel is greatly reduced.

The utility model discloses a portable rapid gasoline octane number detection tool, which relates to the related technical field of gasoline detection equipment and comprises a detection instrument, a portable frame and a rolling assembly. The detecting instrument comprises a measuring instrument, a measuring head and a printer, the printer is electrically connected with the measuring instrument, and a wire is electrically connected between the measuring head and the measuring instrument; the lower left corner of the portable frame is fixedly connected with a grip, and the surface of the portable frame is provided with a first groove, a second groove and a third groove which are used for mounting and accommodating a tester, a measuring head and a printer respectively. The measuring instrument, the measuring head and the printer are integrated on the portable frame, the measuring instrument, the measuring head and the printer can be held at the same time by holding the handle with one hand, a long wire is wound in the carrying process and is not prone to being pulled by foreign objects, moving is convenient, the use flexibility is further improved, and the portable measuring instrument is suitable for being used in different measuring places; and the portability is greatly improved.

The invention relates to the field of aviation fuel, and discloses an aviation gasoline composition containing a bio-based component and a preparation method thereof, and the aviation gasoline composition comprises the following components relative to the total weight of the aviation gasoline composition: 8-20wt% of C5 isoparaffin; the total content of the C6-C7 isoparaffin is 5 to 10 weight percent; the total content of C7-C9 aromatic hydrocarbon is 3 to 18 weight percent; the content of C8 isoparaffin is 40 to 65 percent; the content of the 2, 5-dimethylfuran is 10 to 30 weight percent; no more than 2 wt% of C4 alkane; and not more than 2wt% of alkane with the carbon number of C9 and above. The motor octane number of the aviation gasoline composition is not lower than 91, the aviation gasoline composition contains part of bio-based component 2, 5-dimethylfuran, does not contain metal additives, nitrogen-containing compounds and the like, can meet the use requirements of lead-free aviation gasoline, is simple in component type, safer, more environmentally friendly and low-carbon, and has a practical application prospect.

The invention discloses an engine control method and device, an engine controller, a storage medium and a product, and belongs to the technical field of automobiles. Comprising the following steps: determining a first combustion gravity center of an engine under a target operation condition, and determining a first estimated value of octane number in fuel of the engine based on the first combustion gravity center; collecting the dielectric constant, the density and the sound velocity of the fuel through a multi-parameter fuel component sensor, and determining a first estimated value of the volume content of ethanol in the fuel based on the dielectric constant, the density and the sound velocity; determining an effective value of the octane number in the fuel and a theoretical air-fuel ratio of the engine based on the first estimated value of the octane number and the first estimated value of the ethanol volume content; controlling a fuel system of the engine based on the effective value of the octane number and the theoretical air-fuel ratio; and based on the effective value of the octane number, an ignition system, an air inlet system and a fuel pump of the engine are controlled respectively.

The utility model discloses a cooling device of a gasoline octane number measuring machine, which belongs to the technical field of gasoline octane number measurement and comprises a measuring machine body for measuring the gasoline octane number, and one side of the measuring machine body is connected with one end of a gas inlet pipeline through which gas generated after gasoline combustion flows out. One end of the gas inlet pipeline is connected with a gas inlet pipe, the other end of the gas inlet pipeline is connected with a treatment box for filtering gas, a filtering pipeline is arranged in the treatment box, the filtering pipeline is communicated with the gas inlet pipeline, and a limiting track is arranged in the filtering pipeline. The cooling pipeline has the advantages that dust and solid particles in the gas can be captured, deposition of the dust and the solid particles in the cooling pipeline is reduced, and therefore efficient operation of the cooling pipeline is kept, the clean cooling pipeline can better conduct heat exchange, it is guaranteed that heat is effectively taken away by cooling liquid, and the equipment is kept within the ideal working temperature range.

To provide an engine system capable of improving combustion stability while preventing constant combustion.SOLUTION: A fuel injection device 11,12 that injects at least one of a main fuel, a first fuel having a combustion speed faster than that of the main fuel, and a second fuel having an octane number higher than that of the main fuel into the combustion chamber 5 as a fuel, when the engine load is lower than the reference load Tx, the fuel injection device 11,12 is controlled so that the amount of the first fuel in the combustion chamber 5 is larger than the amount of the second fuel, and when the engine load is equal to or higher than the reference load Tx, the fuel injection device 11,12 is controlled so that the amount of the second fuel in the combustion chamber 5 is equal to or larger than the amount of the first fuel.SELECTED DRAWING: Figure 6

The invention relates to the field of fuel oil, and discloses aviation gasoline and a preparation method thereof. The preparation method of the aviation gasoline comprises the steps that alkylated gasoline is rectified, the alkylated gasoline with the distillation range of 35-125 DEG C is taken as a component A, the component A, a component B and an optional additive are mixed, and the weight ratio of the component A to the component B in the aviation gasoline is 2-9; the component B contains isopentane and cumene, and the weight ratio of the isopentane to the cumene is 0.5-2. The aviation gasoline provided by the invention meets various indexes such as octane number, vapor pressure, distillation range and the like, greatly reduces the use amount of tetraethyl lead, and is environment-friendly.

Unleaded aviation gasoline. An aviation gasoline fuel blend includes an unleaded aviation gasoline base fuel, with an effective amount of selected alkyl benzenes to improve the functional engine performance to avoid harmful detonation sufficient to meet or exceed selected standards for detonation performance requirements in full scale aircraft piston spark ignition engines designed for use with Grade 100LL avgas. Suitable alkylated benzenes may include a mixture of xylene isomers. Aromatic amines, such as m-toluidine, may also be added to increase MON. Base fuels may be a high quality aviation alkylate, or may be a commercial iso-octane, or a mixture of high quality aviation alkylate enhanced by iso-octane, or by commercial iso-octane mixtures, and may include iso-pentane or butane or both iso-pentane and butane in sufficient quantity to provide appropriate vapor pressure for the final fuel blend.

The invention belongs to the field of petrochemical engineering, and particularly relates to a special gasoline fuel for a small (non-road) two-stroke engine. The fuel comprises the following components in parts by volume: 25-28 parts of alkylated gasoline, 20 parts of fuel ethanol, 13-15 parts of mixed pentane component oil, 10 parts of isopentane, 8-12 parts of toluene, 20 parts of reformed gasoline and 2 parts of poly-alpha-olefin. The components are easy to obtain, the production process is simple, and the method is suitable for large-scale production. The special fuel disclosed by the invention has the characteristics of high octane number, high density and high vapor pressure, is relatively good in volatility and can be used for quickly atomizing and mixing air. Therefore, rapid combustion and high-efficiency combustion of the engine in the starting and running process are easier to realize. The lubricating oil is suitable for a small (non-road) two-stroke engine, the lubricating property of an oil product can be improved, abrasion of the oil product to the engine is reduced, meanwhile, the knocking phenomenon is reduced, and the engine runs more stably.

The invention provides a start-up method for a catalytic diesel oil hydro-conversion device, which comprises the following steps: after catalyst vulcanization operation is completed, introducing start-up assisting oil into a liquid phase material, heating to a raw material switching temperature, and switching to introduce catalytic diesel oil; the start-up assisting oil is a mixture of nitride and heavy naphtha. According to the starting method, the initial activity of the hydrocracking catalyst can be reserved to the greatest extent, the risk of temperature runaway in a catalytic diesel oil feeding switching link is greatly reduced while the activity of the hydrocracking catalyst is regulated and controlled, and the time for obtaining a gasoline product with a qualified octane number is greatly shortened.

The invention relates to a method of operating an engine, an engine system, a controller and a program product. The engine operates with natural gas as fuel and is provided with a natural gas tank. In a method of operating an engine, a filling event of a natural gas tank of the engine is detected; if a refueling event of the natural gas tank is detected, a knock protection mode of the engine is activated. Therefore, based on natural gas tank filling event identification, the knock protection mode is actively activated before the engine is knocked, and high-load strong knock caused by the fact that the engine uses low-octane natural gas is avoided.

The invention discloses a renewable high-octane-number alcohol hydrocarbon fuel with ultralow particulate matter emission and a preparation method thereof, and belongs to the technical field of fuels. The fuel is prepared from the following components in percentage by volume: 35 to 65 percent of alcohol component, 20 to 45 percent of high-octane isoparaffin, 5 to 18 percent of cycloparaffin and 0.5 to 5 percent of functional additive bag, the oxygen content is 15-25wt%, and the research octane number is not less than 100. The preparation method comprises the following steps: dehydrating the raw materials, premixing cycloalkane and part of isoparaffin to form the alkyl carrier, integrating the alcohol component into the alkyl carrier, finally adding the additive, and homogenizing and stabilizing. According to the fuel, through the synergistic effect of specific components, the high octane number and good engine adaptability are guaranteed, meanwhile, particulate matter emission is remarkably reduced, and the fuel has excellent storage stability and material compatibility.

The invention relates to the field of fuel oil, and discloses a method for preparing lead-free gasoline, which comprises the following steps: distilling alkylated gasoline, taking a distillation product with a distillation range of 38-135 DEG C as cutting oil, and mixing 40-90 wt% of cutting oil, 2-15 wt% of C4-C5 alkane, 0-50 wt% of C8 alkane, 2-10 wt% of C6-C10 aromatic hydrocarbon and an additive, and the additive contains 0.5 to 5% by weight of aniline and 60 to 300 mg Mn / kg of a manganese antiknock agent. The lead-free gasoline disclosed by the invention has the advantages of high octane number, proper heat value, relatively low freezing point, relatively good oxidation stability and water reaction and the like, meanwhile, the addition amount of aniline and manganese antiknock agents is greatly reduced, and the preparation process is simple. Particularly, according to a preferred embodiment of the invention, the lead-free gasoline meets the GB1787-2018 standard of aviation gasoline with the number of 100LL.

This invention relates to the field of petroleum refining and discloses a gasoline preparation apparatus and method. The apparatus includes a membrane mixing unit (300), an olefin removal unit (400), and an S-Zorb desulfurization unit (500) connected in sequence. This invention can be modified from an existing S-Zorb desulfurization unit by adding at least one olefin removal unit before or after the original S-Zorb desulfurization unit. This allows for the reduction of olefins while maximizing the retention of octane number, ultimately yielding a low-sulfur, low-olefin gasoline fraction.

The invention relates to the field of gasoline octane number determination, and discloses a gasoline component determination device and an octane number detection system.The gasoline component determination device comprises a supporting frame, an operation table is arranged at the top of the supporting frame, multiple sets of operation keys are arranged on the operation table, an octane number detector is arranged in the operation table, and a display screen is fixedly arranged at the top of the operation table; one side of the supporting frame is fixedly connected with a supporting table, the supporting table is fixedly connected with a detection assembly, the detection assembly is used for detecting components in gasoline, one side of the supporting frame is fixedly connected with a lifting frame, one end of the lifting frame is fixedly connected with a mixing assembly, and the mixing assembly is used for adding an additive influencing gasoline octane number detection. Compared with the prior art, the precision degree during gasoline detection is improved.

This invention discloses a fuel for replacing gasoline in engines and its preparation method, belonging to the field of new energy fuel technology. The fuel comprises methanol, naphtha, a composite cosolvent, a composite corrosion inhibitor, a composite power enhancer, a cold start aid, a lubricant, and an antioxidant. The composite cosolvent is composed of tert-butanol, dimethyl carbonate, and alkyl glycosides, achieving wide-temperature-range homogeneous stability and strong water resistance. The composite corrosion inhibitor is composed of benzotriazole, organic amine esters, and fatty amines, effectively inhibiting metal corrosion. The composite power enhancer is composed of isooctyl nitrate and polyoxymethylene dimethyl ether, improving octane number and combustion efficiency. Combined with the cold start aid, lubricant, and antioxidant, the resulting fuel exhibits excellent low-temperature stability, good water resistance, low corrosivity, good cold start performance, power output close to that of traditional gasoline, reduced exhaust emissions, good storage stability, and low raw material costs, effectively replacing traditional gasoline.