61 results about "Octane rating" patented technology

Blending a finished gasoline using a gasoline blending model that is derived from correlations between empirically measured octane numbers and spectral features identified in near-infrared (NIR) spectral data for a group of gasolines and gasoline subcomponents. The correlations are incorporated into generalized blend models for motor octane number and road octane number, which are incorporated into programing executed by a controller that controls the volumetric blend ratio of one or more neat gasolines and / or gasoline sub-components to produce a finished gasoline. In some embodiments, the NIR spectral data utilized for developing the model is contributed by analysis of multiple subsets of gasolines and gasoline subcomponents, where each subset is analyzed by a different NIR spectrometer.

The present invention belongs to the technical field of molecular dynamics models, and specifically relates to a method for constructing a molecular-level catalytic cracking process reaction kinetics model that incorporates oil property calculation capabilities. Verified by industrial data, the model provided by the present invention shows a high degree of agreement between the calculated values ​​for catalytic cracking product yield, product group composition content, product typical molecular content, and gasoline and diesel distillation ranges and industrial values. The relative errors of gasoline density and octane number, as well as diesel density and cetane number, compared with industrial data are all less than 2.2%, demonstrating that the molecular-level catalytic cracking process reaction kinetics model that incorporates oil property calculation capabilities has high reliability and can predict product composition and properties at the molecular level.

Methods and systems for improving operation of a gasoline desulfurization system may include receiving gasoline blending pool data, the gasoline blending pool data indicative of one or more of a sulfur concentration, a current inventory, or an octane number of each current component of a gasoline blending pool. A machine learning model generates a light naphtha sulfur target for a light naphtha produced from a selective hydrogenation reactor of a gasoline desulfurization system based on the gasoline blending pool data and generates a heavy naphtha sulfur target for a desulfurized heavy naphtha produced from a hydrodesulfurization reactor of the gasoline desulfurization system based on the gasoline blending pool data. The machine learning model may be trained on historical data of the gasoline blending pool and historical data of operating parameters, resulting product attributes, and composition from the gasoline desulfurization system, including sulfur concentration and octane number.

The present invention relates to a synergistic antiknock fuel additive comprising a mixture of N-methyl-p-anisidine and m-toluidine in a volume ratio from 45:55 to 95:5; to the use of said fuel additive to increase the octane rating of a gasoline; and to a gasoline fuel composition comprising said fuel additive.

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.

The utility model discloses a knock detector for a motor octane number tester, which belongs to the technical field of knock detectors and comprises a shell and an inner core positioned in the shell, and an initial coil with N turns and D diameter is wound on the inner core; the device is characterized in that the initial coil comprises a first initial coil and a second initial coil; the first initial coil and the second initial coil are connected through an additional coil; the diameter of the additional coil is 0.5 D. The number of turns of the additional coil is N. The coil of the knock detector is optimally designed and improved, so that the sensitivity of the knock detector is remarkably improved. By means of the improvement, the knock detector can more sensitively capture tiny changes in the oil combustion process in the detection process, and therefore the detection precision is greatly improved. Therefore, the measured octane number result of the oil product is more accurate and reliable, and more accurate data support is provided for evaluation of the quality of the oil product.

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 a method for producing clean gasoline by full-fraction gasoline aromatization, which comprises the following steps: S1, mixing full-fraction gasoline with hydrogen, then carrying out pre-hydrotreatment, and then distilling to obtain light-fraction gasoline and heavy-fraction gasoline; s2, mixing the heavy fraction gasoline with hydrogen, and carrying out hydrodesulfurization to obtain a heavy fraction gasoline product; s3, the light fraction gasoline and C4 liquefied gas are mixed and subjected to an aromatization reaction in the presence of an aromatization catalyst, a light fraction gasoline product is obtained, the C4 liquefied gas has the olefin content of 30-40 v% and the alkane content of 60-70 v%; and S4, blending the heavy fraction gasoline product and the light fraction gasoline product to obtain a clean gasoline product. According to the method, a light fraction gasoline aromatization reaction unit is added, the C4 liquefied gas is added, olefin in the C4 liquefied gas is converted into a high-octane-number product in a selective manner, olefin can be reduced, and octane number loss can be reduced at the same time.

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.

Process for converting an oxygenate feed stream, the process comprising the steps of: conducting the oxygenate feed stream to an oxygenate-to-gasoline reactor, suitably a methanol-to-gasoline reactor (MTG reactor) under the presence of a catalyst active for converting oxygenates in the oxygenate feed stream into a raw gasoline stream comprising C3-C4 paraffins and C5+ hydrocarbons; and adding an aromatic stream to the MTG reactor.

The invention discloses a power-enhancing, carbon-deposition-cleaning and noise-reducing curing agent mixed with gasoline for use. The curing agent is prepared from the following raw materials in percentage by mass: 10% of methanol, 3% of sec-butyl ether, 51% of methyl tert-butyl ether (MTBE), 35% of m-xylene and 1% of an antioxidant and anti-gelling agent. The invention relates to the technical field of fuel additives for internal combustion engines, in particular to a power-enhancing, carbon-deposition-cleaning and noise-reducing curing agent mixed with gasoline for use, which has the following advantages due to the adoption of the technical scheme: the power of an engine is increased by 5-12% by increasing the octane number; m-xylene and methanol are dissolved to remove deposited carbon, and an antioxidant and anti-gum agent inhibits new deposited carbon; sufficient combustion is achieved, and friction and noise are reduced by 3-5 decibels; no metal component is contained, so that part abrasion is avoided, and the antioxidant protects the machine and prolongs the service life by more than 30%; 8%-15% of fuel oil is fully combusted, 20%-30% of CO and HC are reduced, and the components are safe and reliable.

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

An electronic fuel injection system for an octane number rating system includes an electronic fuel pump, an electronic fuel injector in fluid communication with an outlet of the electronic fuel pump, and an air-fuel ratio sensor configured to measure an air-fuel ratio within or downstream of an exhaust port. The electronic fuel pump is configured to supply pressurized fuel from a carburetor bowl to the electronic fuel injector, and the electronic fuel injector is coupled to the intake pipe upstream of the venturi.

The invention discloses a method for producing clean gasoline through aromatization reaction, which comprises the following steps: S1, mixing full-fraction gasoline with hydrogen, then carrying out pre-hydrotreatment, and then distilling to obtain light fraction gasoline and heavy fraction gasoline; s2, mixing the heavy fraction gasoline with hydrogen, and carrying out hydrodesulfurization to obtain a heavy fraction gasoline product; s3, carrying out adsorption desulfurization on the light fraction gasoline, and then carrying out aromatization reaction in the presence of an aromatization catalyst to obtain a light fraction gasoline product; and S4, blending the heavy fraction gasoline product and the light fraction gasoline product to obtain a clean gasoline product. Compared with a traditional gasoline hydrotreating process, the method has the advantages that the light fraction gasoline aromatization reaction unit is added, olefin can be converted into high-octane-number products such as aromatic hydrocarbon in a selective manner, and the octane number loss can be reduced while the olefin can be greatly reduced in the hydrodesulfurization process.

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.