189results about How to "Improve combustion quality" patented technology

The invention provides a technique for preparing tobacco sheets and the tobacco sheets. The technique comprises the following steps: soaking tobacco materials in water to obtain extract liquid and a water-insoluble solid; carry out enzymatic hydrolysis on the extract liquid by pectinase and/or protease so as to obtain a first water-soluble extract; degrading the protein in the water-insoluble solid by the protease so as to obtain an enzyme-hydrolyzed water-insoluble solid and a second water-soluble extract; placing the enzyme-hydrolyzed water-insoluble solid in acidic alcohol solution so as to acid-degrade lignose, then preparing the separated solid into tobacco sheet bases; and carrying out vacuum concentration on the first and the second water-soluble extracts and applying the first and the second water-soluble extracts to the tobacco sheet bases to prepare the tobacco sheets. The technique can effectively reduce the content of water-soluble pectin and water-insoluble protease, and reduce the unique lignin flavor in the tobacco sheets by the chemical degradation of the lignose.

To achieve an improvement in concentration distribution in a vertical direction at an inlet of a pulverized coal distributor and uniformly distribute pulverized coal to respective pulverized coal burners. A pulverized coal distributor and a gas-particle flow adjustment device provided on an upstream side of the pulverized coal distributor and at a bottom in a pulverized coal pipe to adjust pulverized coal to branch pipes in concentration are provided, the gas-particle flow adjustment device comprises a plate-shaped member provided along a substantially overall width of the pulverized coal pipe to have a substantially rectangular shape as viewed in plan view, a front edge of the gas-particle flow adjustment device is mounted pivotally to a bottom surface of the pulverized coal pipe, and an angle formed between an upper surface of the gas-particle flow adjustment device and a bottom surface of the pulverized coal pipe can be automatically adjusted on the basis of signals from flow sensors mounted to the respective branch pipes.

The invention belongs to the technical field of cigar tobacco processing, and particularly relates to a method of using microbial flora for fermenting cigar tobacco leaves. According to the method, the natural microbial flora which is harmless to the human body is adopted to ferment the cigar tobacco leaves; particularly, strains of the microbial flora include yeast and also include a mixture composed of one or more of penicillium, aspergillus niger, mucor and rhizopus according to an arbitrary proportion. Preliminary application effects show that after the cigar tobacco leaves are fermented by the microbial strains coming from tea, the sugar-nitrogen ratio of the cigar tobacco leaves is balanced; the defects of pungency, bitterness, astringency and the like which are caused by acid-base imbalance during combustion and smoking are effectively overcome, the defects of green and versicolor tobacco leaves, irritation and the like are also overcome, transformation of substances related tothe smoking taste of the tobacco and formation of a sweet flower fragrance are promoted, the quality of the fragrance of the tobacco leaves is effectively improved, the amount of the fragrance of thetobacco leaves is effectively increased, and the combustion and smoking quality of the tobacco leaves and the industrial applicability of the cigar tobacco leaves are improved.

Disclosed are a water-cooled internal combustion engine cylinder head and a water-cooled internal combustion engine with the same, aiming to overcome defects that holes of a fuel sprayer, a gas feed channel and a gas exhaust channel in a water cavity of the water-cooled internal combustion engine cylinder head in the prior art are complicated in structure and the water cavity is covered by a casing of the cylinder head, so that design of die-casting mold is failed, and the die casting processes of normal stripping and core pulling cannot be performed to manufacture the water-cooled cylinder head. To realize manufacturing the water-cooled cylinder head by the die casting processes of normal stripping and core pulling, the cylinder head is manufactured as an integrated cylinder head by steps of split manufacturing, welding, binding, threading and/or riveting and is convenient to process, reliable in quality, economic, energy-saving and environment-friendly and prone to production and application in scale.

The invention discloses a composite biomass granular fuel and its processing technology. The formula of the composite biomass granular fuel comprises the following components: by weight, 15-20% of peanut shell, 15-20% of wood chip, 40-50% of rice husk, 8-12% of grease, 6-10% of a gangue powder and 0.5-1% of calcium oxide. The processing technology comprises the following steps: crushing peanut shell, rice husk and wood chip into powders according to the above proportions of the formula, adding grease, gangue powder and calcium oxide, uniformly mixing, compressing, screening, and packaging to prepare the biomass granular fuel. The composite biomass granular fuel prepared in the invention has high fuel value, is not easy to form slag, and can be widely applied in various biomass combustion apparatuses.

The invention relates to a burner for external spiral intake volatization and atomization type parking heater with a flat cap and necking, which belongs to the field of burners. The technical scheme provided by the invention mainly adopts a compressed air chamber of an external spiral intake structure, an afterflaming barrel and a flat end cap, wherein an S-shaped diversion rib which corresponds to a compressed air outlet is fixedly arranged at the inner wall of the compressed air chamber; the afterflaming barrel is formed by stamping and drawing metal, and one end of the afterflaming barrel is contracted toward an inner plane; and one side of the flat end cap is provided with 3-5 long slant air inlets, and 5-15 auxiliary air inlets are uniformly arranged in the middle of the flat end cap. The burner has the advantages that the burner has a simple structure, a small volume and small noise, is easy to start and clean to burn, has high power density, and particularly saves the electricity quantity of an automobile storage battery; the burner stably burns and has high burning efficiency, the service life of a motor is greatly prolonged, and requirements on the automobile storage battery and the motor of a compressor are lowered; the burner can realize the common use of diesel, gasoline and kerosene, and can also be used on other heating devices except a fuel heater; and the burner has strong practicability.

The invention provides a gas jet device of an electric control jet lean-burn natural gas engine and a jet control method. The gas jet device comprises a large flow natural gas nozzle, the nozzle is arranged on a cylinder cover or an air intake manifold, the lower part of the nozzle is provided with a draft tube, the inside diameter of the draft tube is the same as the inside diameter of a nozzle outlet, the center line of the draft tube and the center line of an intake valve are two spatial straight lines which are not mutually parallel or intersected, and post gas pulse in the air intake process passes through an annular gap between the intake valve and a valve seat and is directly sprayed into a cylinder. Through the gas jet control method, mixed gas concentration layers are formed from the top down in the cylinder to ensure reliable combustion of the engine; and the jet pulse is directly sprayed into the cylinder to convert self kinetic energy into turbulent energy in the cylinder so as to quicken the combustion process of the natural gas engine and expand the lean-burn limit of stable running of the engine, thereby improving the dynamic property, economical efficiency and emission performance of the natural gas engine.

An ignition system of an internal combustion engine, of a motor vehicle in particular, having at least one device for igniting a jet of a fuel/air mixture which has a chamber enclosing a process space in which the ignition of the fuel/air mixture takes place. The chamber has a device for enriching the process space with oxygen radicals.

The invention relates to a hydrogen-doped inlet air and oxygen-enriched gasoline engine with EGR and a combustion control method. The device mainly comprises a gasoline engine, an EGR cooler, an EGR valve, a water electrolysis device, a hydrogen storage, an oxygen storage, a pressure control device, a hydrogen injection device and an oxygen injection device. According to the hydrogen-doped inlet air and oxygen-enriched gasoline engine, in-cylinder combustion modes of four air inlet modes including inlet air doped with hydrogen and oxygen, small-scale exhaust gas recirculation and hydrogen doping, large-scale exhaust gas recirculation and hydrogen doping and oxygen enrichment are respectively adopted in a cold start and idling condition, a medium or small load condition, a large load condition and a full load condition of the engine, so that the effects that the thermal efficiency is obviously improved and the HC and CO discharge is reduced at the cold start and idling stage of the gasoline engine can be achieved; the pumping loss of the engine is greatly reduced in the medium or small load condition, and the oil consumption and NOx discharge are greatly reduced; the engine power is obviously increased within short time when a throttle valve is fully opened. The hydrogen-doped inlet air and oxygen-enriched gasoline engine has excellent overall properties such as low emission, low oil consumption and instantaneous high power output.

The invention provides an automobile eddy current retarder breaking heat energy recycling device and a control method, belonging to the field of automobile energy conservation and emission reduction technology. A large amount of low-grade heat energy produced in the braking process of a permanent-magnet retarder used in a heavy truck is recycled into electric energy by using organic Rankine cycle, the produced electric energy is used for catalytically reforming methanol aqueous solution, and the produced reformed gas is introduced into an intake pipe of a diesel engine and mixed with diesel oil for combustion. As the diesel engine is in idling and has poor combustion condition when an automobile uses a retarder; working medium exhaust gas produced after an expander does work is used in the invention to heat the inlet gas of the diesel engine so as to improve the combustion of the diesel engine and reduce emission. Through comprehensive effects of an organic Rankine cycle generating system, a methanol aqueous solution catalytic reforming device, a diesel engine inlet air heating device and a control system, the device and control method provided by the invention recycle the braking heat of the retarder, ensure reliable work of the retarder, improve the combustion and emission performance of the diesel engine in idling, and realize energy conservation and emission reduction of the diesel engine.

The system for visualizing the cavity-inside microwave ignition and combustion process provided by the present invention belongs to the field of microwave ignition and microwave combustion and includes a microwave ignition device and a microwave ignition visualizing device located on one side of the microwave ignition device. The microwave ignition device comprises a microwave coupler and a gas preparing valve's U-shaped upper cover arranged respectively on the center of the top end and the edge part; a microwave burning chamber formed by a flat lower end cover with a transparent conducting layer of quartz glass on one side embedded right in the center wherein the upper end cover top end's inside is a mirror face. The microwave ignition visualizing device comprises a white light source generator coaxially arranged with the quartz glass, a convex lens, a half-transparent and half-reflective lens, a coaxially arranged knife edge and an imaging screen, wherein the knife edge is located at a focal point where the convex lens is converged with the half-transparent and half-reflective lens. The system can ensure the good reflection characteristic and the microwave resonance mode of the microwave in the cavity, avoids the external leakage of the microwave, and ensures the visible light from the outside to penetrate the cavity. The whole process of the microwave ignition in the combustion cavity is visually observed through the schlieren method.

The invention relates to a cylinder cover with a shielding wall structure. The cylinder cover comprises a cylinder cover base body, an exhaust valve seat ring and an intake valve seat ring, wherein the exhaust valve seat ring and the intake valve seat ring are installed on a cylinder cover body in a pressed mode. The cylinder cover further comprises an exhaust valve, an intake valve, an exhaust passage, an intake passage, a cylinder cover inner wall, an exhaust shielding wall arranged on the periphery of the exhaust valve, and an intake shielding wall arranged on the periphery of the intake valve. By means of the technical scheme, the combustor cylinder cover with a new intake-exhaust shielding wall structure is fully capable of being provided to improve the intake rolling flow rate of a four-stroke internal combustion engine, the EGR capacity inside a cylinder when loads are low, and the efficient backflow gas changing exhaust gas sweeping capacity when the loads are high, the combustion quality of the engine is improved, and the power and the economical efficiency are improved.

When alcohol-blended fuel is supplied to an internal-combustion engine, the magnitude of alcohol concentration (more particularly, ethanol concentration Cetha) is judged (Step 1005) and, based on this judgment, the magnitude of operational status temperature (more particularly, cooling water temperature THW) is judged (Step 1015). Then, when the alcohol concentration is large and the operational status temperature is low, generation of an intermediate product which is an oxide of alcohol contained in the alcohol-blended fuel in an unburnt state after main injection and alcohol contained in the alcohol-blended fuel in an unburnt state after post injection (more particularly, aldehyde) is promoted, and the generated intermediate product is trapped in an intake passage by making an intake valve into an opened state in an exhaust stroke of the internal-combustion engine (Step 1055).

A temperature-controlled fuel valve, especially for a fuel-operated heating burner of a vehicle heating system has at least one valve member (40) that is adjustable as a function of a temperature in the area of a heating burner (30).

The invention provides a method for producing a liquid fuel by using biomass. The liquid fuel is obtained by performing pretreatment, a pyrolytic reaction and a catalytic cracking reaction on the biomass. The biomass is composed of pine needles, bamboo wood, tung tree branches, ginger stems and leaves, Chinese toon branches, sweet potato seedlings, Enteromorpha prolifera, leftovers from a slaughterhouse and the like, wherein the pine needles, the bamboo wood, the tung tree branches, the ginger stems and leaves, the Chinese toon branches and the sweet potato seedlings contain volatile oil, grease, cellulose, lignin and the like; Enteromorpha prolifera contains a large amount of carbohydrates, proteins, crude fibers, fatty acids and the like; and the leftovers from the slaughterhouse are rich in grease. The above biomass raw materials are subjected to the pyrolysis reaction and the catalytic cracking reaction for sufficient conversion, and the obtained liquid fuel is excellent in combustion quality.

The invention provides a gas/dual-fuel engine intake manifold gas injection device. The device comprises an intake manifold, a natural gas injection electromagnetic valve, a gas injection structure and a cylinder cover, wherein the internal structure of the gas injection device is a venturi pipe, and the external frame is provided with a gas supply annular groove; the gas injection structure is mounted in the connection place between the intake manifold and a gas inlet way of the cylinder cover; the gas injection electromagnetic valve is mounted at the top end of the gas injection structure; inner surface gas outlet holes are formed in the throat port of the venturi pipe; an arrangement mode of the inner surface gas outlet holes of the gas injection structure is as follows: the air outlet holes are uniformly distributed along the circular inner surface, and are distributed along the center line of the electromagnetic valve in an axisymmetric manner; and the apertures are increased along with the increment of the distance far from the natural gas injection valve. The device can improve the natural gas and air mixing quality, optimize the engine combustion process and enhance the economy and the emission performance.