44results about How to "Good anti-knock performance" patented technology

Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine.

The invention relates to methanol-diesel and a preparation method thereof, and the methanol-diesel contains the following components in parts by weight: 30-80 parts of methanol, 20-60 parts of diesel and 10-50 parts of additives. The preparation method comprises the following steps: adding the additives into a reactor successively, and stirring until a uniform and steady transparent solution is formed, thus obtaining an additive mixed solution; and then mixing the methanol with 0# diesel, then adding the prepared additive mixed solution of a certain proportion under intense stirring, and thenstirring until the solution is clear and transparent, thus obtaining the prepared methanol-diesel. Compared with the prior art, the stability of the methanol-diesel is improved, the flash point and the combustion efficiency of the methanol-diesel are enhanced, and the mixed methanol-diesel is transparent and steady, has no milky or stratified situation and can be stored for a long time; and when in use, the methanol-diesel can be directly used, the structure of the existing engine does not need to be changed, and the performance indexes can all meet the requirements of commercial diesel.

A method for controlling an engine includes, when the engine is operating within a particular range with comparatively low engine speed and high load, setting an effective compression ratio of 10:1 or above, retarding ignition timing by a predetermined amount and retarding the ignition timing within a first, relatively low engine speed range more than within a second, higher engine speed range, setting an injection mode of an injection valve to divided injections performed at least twice in a period from an intake stroke to an earlier-half stage of a compression stroke, performing, within the first engine speed range, a final injection in the earlier-half stage of the compression stroke, and performing, within the second engine speed range, the final injection in a late stage of the intake stroke and at least one injection other than the final injection in a middle stage of the intake stroke.

Energy-saving emission-reducing type carbinol diesel, the weight by parts proportion of auxiliary raw materials which are used is that carbinol is 1-35 parts, diesel is 61-80 parts, methyl tert-butyl ether is 2-5 parts, vegetable oil acid is 1-5 parts, thick tea water is 1-2 parts, hexane is 0.2-0.5 part, isopropanol is 0.3-0.5 part, tert-butanol is 0.25-0.6 part, and the above auxiliary raw materials should only be mixed evenly under normal temperature and nor pressure. The carbinol diesel does not separate layers in long-term storage and has good intersolubility, the tryout on diesel-engine road vehicles shows that compared with pure national standard diesel which uses the same mark number, the carbinol diesel saves fuel consumption by 5-10% for 100 kilometers, the discharging end gas does not have black smoke, the content of harmful substances as CO, NO X, HC and the like is greatly reduced, and the fuel does not exist corrosion and swelling problems to metal pieces and rubber pieces in oil ways. The invention has simple preparation, high heat quality of the product and low cost, and not only can save the fuel consumption and the emission of the harmful substances but also can overcome the drawbacks such as corrosiveness, swellability and poor motivation which occur when existing carbinol diesel is in use.

The invention discloses a gas piston pulse engine comprising a spraying pipe (1). The spraying pipe (1) is internally provided with at least on combustion chamber (2); the inside and/or the side wall of the spraying pipe (1) are/is provided with at least one high-pressure fluid spraying nozzle (3) which takes the spraying direction of the spraying pipe (1) as the overall spraying direction and/orthe opposite spraying direction as the overall spraying direction; and the high-pressure fluid spraying nozzle (3) is communicated with a high-pressure fluid source (4) through a high-pressure fluid spraying controlling valve (5). The gas piston pulse engine has less motion parts and high compression ratio and solves the problems that the large numbers of motion parts of the prior combustion engine are difficult to lubricate and the pure ramjet engine can not be started in the static state and can not work in the low-speed working condition.

The invention discloses a coal mine vertical wind well explosion-proof door advanced explosion venting device and an explosion-proof door. The coal mine vertical wind well explosion-proof door advanced explosion venting device comprises a canopy type door body and an advanced explosion venting device, wherein the advanced explosion venting device comprises an explosion venting cover, a base, a hinge seat, a reset spring and an air reversing lock; the explosion venting cover comprises a metal cover plate, a sealing block and a cushion pad respectively adhered on the upper board and the lower board of the metal cover plate; a hinge head is arranged at one side of the metal cover plate, the hinge head is hinged with the hinge seat through a hinged shaft; a spring coil part of the reset spring is sleeved on the hinged shaft of the hinge seat, one pin thereof is fixed on the hinge head, and the other pin is overlapped on the hinge seat; the air reversing lock comprises a lock groove on the base and a spring bolt on the metal cover plate; a plurality of trapezoid explosion venting holes are equidistantly arranged on the canopy type door body around the center circumference; the lower end of the base is welded and fixed at the periphery of the explosion venting hole; and the hinge seat is welded and fixed on the canopy type door body. When the existing explosion-proof door is updated and transformed by using the explosion venting device disclosed by the invention, only the canopy type door body needs to be transformed, the work amount is small and the cost is low.

The invention provides UV facial oil for paper packaging and printing and a preparation method of the UV facial oil, which relates to the technical field of printing ink. The UV facial oil for the paper packaging and printing is mainly prepared from connecting resin, glycerol-phthalic resin, vegetable oil, mineral oil, organic aluminum gelatinizing agent, antioxidant, light initiator, dispersion resin and defoaming agent. The connecting resin and the light initiator initiate the instantaneous light chemical reaction under the illumination of ultraviolet rays, and a netted chemical structural coating is formed on the surface of a printed product; the glycerol-phthalic resin can improve the leveling property of the light-cured connecting material; the vegetable oil can play a role in dispersing the light-cured connecting material; and the organic aluminum gelatinizing agent can improve the viscosity of the light-cured connecting material. The UV facial oil for the paper packaging and printing obtained by compounding the components has the advantages of high glossiness, good wear resistance, good leveling property, high adhesion force, yellowing resistance, good anti-explosive performance.

The invention relates to a turbocharged engine with a cooling exhaust recirculation technology. An air inlet in the vortex end of a turbocharger is connected with an exhaust manifold, an air outlet is connected with atmosphere through an exhaust pipe, an air inlet of the compression end of the turbocharger is connected with an air filter through a first air inlet pipe, and the air outlet is connected with a throttle body communicated with an air inlet manifold through a second air inlet pipe. A three-way catalytic converter is arranged in the middle of the exhaust pipe, an engine intercooler is arranged in the middle of the second air inlet pipe, the exhaust port end of the exhaust pipe is further connected with the first air inlet pipe through a bypass pipeline composed of an EGR intercooler and an EGR valve, an air inlet of the EGR intercooler is connected to the exhaust port end of the exhaust pipe, the air outlet is connected with an air inlet of the EGR valve, and an air outlet of the EGR valve is connected to the first air inlet pipe. Due to the fact that the exhaust pipe is communicated with the first air inlet pipe through the bypass pipeline, a certain amount of exhaust is added into inlet air, anti-explosion and anti-vibration properties are improved, the compression ratio is improved, oil consumption and NOx emission are reduced, and the structure is simple and compact.

The invention relates to a modified kerosene composition, which is composed of following substances, by mass, 80-99.99% of 3# jet fuel conforming to GB6537-2006, and 0.01-20% of an antiknock agent or a high-octane rating component. In the invention, by means of addition of the antiknock agent or the high-octane rating component in aviation kerosene, automatic acceleration of a combustion reaction can be inhibited so that combustion speed of fuel is limited within a normal range, namely, before a flame front coming, spontaneous combustion of hydrocarbons is inhibited so that the spontaneous combustion induction period of non-combusted mixed gas is prolonged or that the spreading speed of fire is increased, thereby eliminating knocking combustion of the fuel. The modified kerosene composition is available in a spark-ignition-type heavy oil piston engine, can improve the antiknock performance of the spark-ignition-type heavy oil piston engine, can increase power limit of the engine and can increase the knocking power limit of the piston engine by 6.5%.

The invention relates to an enzyme-containing additive composition for a biodiesel fuel. The enzyme-containing additive composition contains an anti-oxidant and a biological enzyme component. The biological enzyme with characteristics of high catalysis performance and mild effect, is combined with the anti-oxidant in the prior art, thereby raising oxidation stability of biodiesel. Simultaneously, the enzyme-containing additive can be individually used, and also can be composited with other diesel oil additives, thereby raising integral performance of biodiesel.

The invention provides a diesel oil improver component containing biological enzyme, which comprises dispersant and biological enzyme, wherein the weight part ratio of the dispersant to biological enzyme is 1: (0.01-1); the dispersant is one of polyisobutylene succinic anhydride derivatives, Mannich base and poly alkyl polyamine; the biological enzyme is the mixture of sulpho enzyme, alcohol oxidase, aldehyde oxidase, amine oxidase, sulfhydryl oxidase, methyl mercaptan oxidase, methyl naphthoquinone oxidase, peroxidase, ferrochelatase, decarboxylase, aldolase, oxyacid lyase, demethylase, alcohol dehydratase, acid dehydratase, esters dehydratase, desulfhydrase, desulfurization methyl enzyme, cobalt chelating enzyme and magnesium chelating enzyme. The diesel oil improver component containing biological enzyme, provided by the invention, has the advantages that the high speed catalytic performance can be realized under the temperate environment through utilizing properties of the biological enzyme, and the component is combined with the conventional dispersant for use, so that cleaning efficiency of the dispersant is greatly improved, and the cleaning effect of the dispersant is improved.

Methods for separation of oxygenates or other chemical components from fuels using chemical processes and separations including, but not limited to, onboard applications in vehicles. These separations may take place using a variety of materials and substances whereby a target material of interest is captured, held, and then released at a desired location and under desired conditions. In one set of experiments we demonstrated an enhancement in the separation of diaromatics by >38 times over gasoline and aromatics by >3.5 times over gasoline. This would give an advantage to reducing cold-start emissions, or emissions during transient conditions, in either gasoline or diesel.

The invention aims at the disadvantage of poor anti-explosion performance of moving explosive storages in the prior art to provide one moving explosive storage provided with a liftable operation platform and belongs to the technical field of explosive article storage facilities. The moving explosive storage comprises a bottom pit located in the ground and an explosive storage body partially buriedin the bottom pit, wherein the position, located above the earth surface, of the explosive storage body is provided with an in-out mouth, the in-out mouth position is provided with an anti-explosiondoor, an inner cavity of the explosive storage body is internally provided with the operation platform for placing explosive articles and a lifting mechanism for controlling the longitudinal height position of the operation platform inside the inner cavity of the explosive storage body, the outer side of the explosive storage body is provided with a sandbag pile arranged to surround the explosivestorage body in a stacked manner, and a passage is left at the anti-explosion door position in the side face of the sandbag pile. The moving explosive storage provided with the liftable operation platform has good anti-explosion performance, the required safe distance can be effectively shortened, the moving explosive storage provided with the liftable operation platform can be used in smaller venues, and by means of the arrangements of the operation platform and the lifting mechanism, the explosive articles are conveniently stored and fetched to be used.

The invention provides environment-friendly biofuel and a preparation method thereof. The environment-friendly biofuel is mainly prepared from lignin, agricultural wastes, sea mud, sepiolite velvet, aluminum oxide, a silane coupling agent, ammonium chloride, dimethicone, yeast powder, capsaicin, di-tert-butylhydroquinone, camphor, soybean oil, n-butanol, citrus oil, isooctanol, diacylglycerol, an oxygen producer, an vibration-resisting and explosion-proof agent and a bulking agent. The environment-friendly biofuel and the preparation method thereof, provided by the invention, are green and environmentally friendly; the agricultural wastes are utilized so that pollution, caused by the agricultural wastes, to the air is reduced and the recycling value is improved; compared with conventional fuel, the environment-friendly biofuel has high combustion value; no harmful gas is discharged after the environment-friendly biofuel is combusted and combustion equipment is not corroded; the source of the raw materials is wide and the raw materials are easy to obtain; the production cost is low so that the environment-friendly biofuel is suitable for large-scale industrial application.