33results about How to "Increase cylinder pressure" patented technology

A method for an engine capable of burning gaseous fuel, the engine also including a combustion chamber, at least one intake valve, and at least one exhaust valve, an injector to directly inject pressurized gaseous fuel into the combustion chamber, and a variable valve timing system coupled to the intake valves and exhaust valves, the method comprising closing the exhaust valve before top dead center of piston position to increase combustion chamber pressure achieved at top dead center and to trap exhaust gas in the cylinder; and starting injection of a gaseous fuel directly into the combustion chamber after the exhaust valve is closed and before the intake valve is opened.

The invention discloses a double-crank mechanism engine, belonging to the technical field of engines. The double-crank mechanism engine comprises a gas cylinder and a piston capable of performing straight reciprocating motion in the gas cylinder, wherein two parallel crankshafts are arranged at the two sides of the gas cylinder; a connecting rod is hinged between corresponding crankshaft pins of the two crankshafts to form a double-crank mechanism; a connecting rod insertion slot and a slide block are arranged on a piston rod on the rear end of the piston, the connecting rod is inserted to the connecting rod insertion slot in a sliding manner, a guide block is fixed in the engine; a guide rail for sliding the slide block is formed on the guide block; the slide block is inserted to the guide rail; transmission gears are arranged on the end parts of the crankshafts; an output gear is engaged between the two transmission gears; and an output shaft is arranged on the output gear. The double-crank mechanism engine can be used for effectively lowering the abrasion and the impact of the piston and a cylinder sleeve, improving the reliability of the ceramic material applied to the engine and improving the practical heating efficiency.

The invention relates to lubricating oil containing surface modified carbon nanomaterials and a preparation method thereof, in particular to lubricating oil containing graphene, carbon nanotubes and nanocarbon fibers and a preparation method thereof. Graphene, carbon nanotubes and carbon nanofibers are coated with polydopamine and grafted with long-carbon-chain paraffins correspondingly on surfaceto obtain corresponding modified carbon nanomaterials. The modified carbon nanomaterials, base oil, and other lubricant functional additives are mixed in proportion to obtain the lubricating oil containing the surface modified carbon nanomaterials. The lubricating oil containing the surface modified carbon nanomaterials and the preparation method thereof solve problems of stability and dispersibility, produces ball effects and supporting effects, and further produce a solid-liquid dual-function lubrication mechanism and a stable porous structure, and remarkably improve performance of the lubricating oil.

The invention discloses a graphene-containing frictional regulator and a preparation method thereof. The graphene-containing frictional regulator comprises the following components in percentage by mass: 0.3-1.2% of nano graphene, 3-8% of nano graphite particles, 1-6% of polymer protective colloid, 0.5-5% of dispersing agent, and the balance of base oil. Through the frictional regulator, the lubrication between metal pieces on the surface of a friction pair can be greatly promoted, and the wear is reduced; the anti-wear, lubrication, remediation and sealing properties can be increased to form synergistic effect, antiwear and lubrication effects of an engine on the severe wear when the engine is in cold starting can be enhanced, and the service life of the engine can be prolonged. The system has excellent dispersion and suspension properties as well as has no precipitation through an oil phase dispersion technology, and the frictional regulator is stable in the performances of the colloid.

The present invention provides an antiwear energy-saving agent containing refined mineral oil, zinc dialkyl dithiophosphate and deactivator for lubricating oil, it possesses excellent functions of reducing friction, reducing wear, resisting rust, resisting corrosion and resisting oxidation, and has strong cleaning dispersing power and good extreme pressure resistance and long-acting lubricating property and excellent compatibility with lubricant. This invention also provides its preparation method and application to lubricating oil and soaking field.

The invention provides an energy-saving and synergistic nano graphite lubricant additive and a preparation method thereof. The preparation method is characterized by comprising the following steps of: ball-milling graphite powder, deironing, separating and drying, and processing to obtain nano graphite powder; and mixing the nano graphite powder, gear oil, a dispersion stabilizer, basic oil and a solid lubricant to obtain the finished energy-saving and synergistic nano graphite lubricant additive. By the preparation method, the engine can save fuel oil by over 7 percent, reduce the lubricant oil consumption by 50 percent, prolong the oil change period by one time, reduce abrasion of machine parts and prolong the engine overhaul mileage by 50 percent; moreover, the abrasion is reduced, the abrasion rate of an engine cylinder is reduced by 25 to 36 percent, the engine air tightness is increased, the discharge of harmful gases in the tail gas is reduced, and dual benefit of saving the energy and protecting the environment can be gained.

The invention relates to micro-nano engine oil and a preparation method thereof. The micro-nano engine oil is prepared from, by mass, 40%-70% of PAO, 5%-30% of adipate, 1%-5% of polyol ester, 5%-10% of an engine oil complexing agent, 2%-12% of a viscosity index improver, 0.2%-0.5% of a pour point reducer and 0.1%-4% of a compound micro-nano antiwear agent. The micro-nano antiwear agent is micro-nano metal particles, the micro-nano metal particles are treated through the processes of centrifugal separation, grinding dispersion, centrifugal treatment and the like and finally uniformly suspend in PAO to prepare micro-nano concentrated liquid, the micro-nano concentrated liquid is mixed with engine oil mixed liquid taking the PAO as base oil, uniform dispersion of the nano particles is guaranteed, after mixing is conducted, the finished product can be obtained only by conducting constant-temperature stirring for 1 h, and therefore the production efficiency is improved.

The invention relates to an energy-saving and anti-friction graphite lubricating oil and methods for making the same. The energy-saving and anti-friction graphite lubricating oil includes 1-3 parts by weight of graphite lubricating oil additive, and 97-99 parts by weight of national standard lubricating oil; the graphite lubricating oil additive includes 10-20 parts by weight of graphite powder, 30-35 parts by weight of dispersant, and 45-60 parts by weight of base oil. Graphite lubricating oil of the present invention is added in automobile engine and transmission case, and in automobile, fuel oil is saved 7-12% in the car that takes gasoline as fuel, and fuel gas is saved 15-20% in the car that takes gas as fuel, and diesel fuel is used as fuel. Save 3-5% of fuel in large and medium-sized vehicles, save 5-8% of gas in large and medium-sized vehicles fueled by gas, reduce the wear and tear of parts by more than double, extend the oil change period of lubricating oil by more than 30%, and reduce carbon monoxide in engine exhaust , carbon dioxide and carbohydrates and other harmful gases more than 30% of the emissions.

A refrigeration device having a closed circuit in which a flow rate of coolant is circulating is provided. The closed circuit has a condenser and a main branch provided with a reciprocating compressor inside which a defined flow rate of the coolant enters, from the main branch, at a defined suction pressure, of an evaporator and a first expansion valve that is arranged between the condenser and the evaporator. The closed circuit further has a first secondary economizer branch for a first fraction of flow rate of the coolant, the first secondary economizer branch fluidically connecting the compressor to a section of the closed circuit between the condenser and the first expansion valve, wherein the compressor has a first side inlet port for the entrance of the first fraction of coolant flow rate.

The invention discloses a cleaning agent for an engine lubrication system without disassembly. The cleaning agent is prepared from the following components: polyisobutylene butyldiimide, a Mannich base dispersing agent, calcium alkyl salicylate, calcium sulfonate, calcium naphthenate, long-chain alkyl primary zinc phosphorodithioic acid, octyl-butyl diphenylamine, dimethyl sulfoxide, oil soluble polyether, heavy alkyl benzene, 150N base oil, and T901 methylsilicone oil. The cleaning agent product provided by the invention has a higher cleaning performance on low-temperature oil mud and a higher adsorption performance on generated carbon deposits and paint films, and can be used for washing the paint films and the carbon deposits adsorbed on the part surface away so as to enable the paint films and the carbon deposits to disperse and suspend in oil.

The invention relates to fuel oil saving technology, in particular to a spectrum function honeycomb ceramic fuel oil internal energy increasing device and a manufacturing method thereof. The device comprises an oil inlet and an oil outlet arranged on a shell, a honeycomb ceramic body is arranged in the shell, and a rare earth permanent magnet energy block is arranged in the middle of the honeycomb ceramic body, wherein the honeycomb ceramic body is formed from 15-20% of chloritoid phyllite, 25-30% of alumina, 5-10% of calcite, 25-30% of tourmaline, 10-15% of iron oxide and 2% of polyvinyl alcohol adhesive by smashing, milling, hot mixing, vacuum refining, extrusion molding into a honeycomb micropore shape and firing at a high temperature of 1300 DEG C. The device can increase the utilization rate of the fuel oil, reduces the emission of hydrocarbon and particles in automobile exhaust, maintains an internal combustion engine and protects the atmospheric environment.

The invention relates to an anti-attrition oil saving agent for structural porcelain, comprising lubricating oil or lubricating grease used as a carrier. Natural ore powder with fineness specificationof 500 nanometers-2 micrometer is uniformly added in the lubricating oil or the lubricating grease, the content of the natural ore powder in the lubricating oil or the lubricating grease is 0.01-1%,the natural ore powder comprises the following elements in percentage by weight: 5-20% of silicon, 5-20% of aluminum, 5-20% of calcium, 5-20% magnesium, 1-10% of ferrum and 1-10% of natrium, and the natural ore powder is selected and added in the lubricating oil or the lubricating grease according to a certain proportion, and after emulsification and diffusion treatment, the anti-attrition oil saving agent is prepared. A appropriate amount of the anti-attrition oil saving agent is added in engine oil so as to synthesize a smooth and hard structural porcelain protection layer with machine bodyelements on a negative friction surface in virtue of heat energy generated by high-temperature fuel gas of the engine and friction during the operation of mechanical equipment, thereby reducing the friction coefficients of machine parts and the abrasion and achieving the purpose of saving oil.

The invention discloses a nano engine oil additive and a preparation method thereof. The nano engine oil additive is prepared from 1-18 parts of nano metal powder, 5-15 parts of solvent, 1-15 parts ofemulsifier, 5-20 parts of bio-oil, 1-12 parts of dispersing agent and 1-8 parts of clearing agent. The nano engine oil additive is prepared from the components, and the nano engine oil additive is added into base oil mixed liquid of engine oil, thus the friction coefficient of an engine can be greatly reduced, and engine abrasion is reduced.

The invention discloses a double-cylinder two-stroke cylinder engine, belonging to the technical field of engines. The double-cylinder two-stroke cylinder engine comprises two gas cylinders which are oppositely arranged, two double-ended pistons, and a crankshaft, wherein inner cavities of the gas cylinders are manufactured into circular-ring-shaped curved surfaces; piston inlets are formed in the two ends of each gas cylinder; a central shaft is arranged between the two gas cylinders; each double-ended piston comprises a piston arm, wherein piston heads are fixed at the two ends of the piston arm; the piston arm is hinged on the central shaft; a sealed combustion chamber is formed between the two opposite piston heads of the gas cylinder; a connecting rod is hinged between the piston arm and the crank of the crankshaft; the crankshaft, the connecting rod, the piston arm and the central shaft form a crankshaft rocker rod mechanism capable of synchronously swinging the double-ended pistons, and enabling the piston heads to rotate back and forth around the central shaft between inner and outer stop points. The double-cylinder two-stroke cylinder engine can be used for effectively lowering the abrasion and impact of the piston and the cylinder sleeve, greatly improving the reliability of the ceramic material applied to the engine and improving the practical heating efficiency.

The invention relates to a structure ceramic metal abrasion reduction material which comprises lubricating oil or lubricating grease used as a carrier; natural ore powder with the fineness specification of 100 to 500 nanometers is uniformly added into the lubricating oil or the lubricating grease; the content of the ore powder in the lubricating oil or the lubricating grease is 0.1% to 1%; the core powder comprises elementary components: 5% to 20% of silicon, 5% to 20% of aluminium, 5% to 10% of calcium, 5% to 20% of magnesium, 5% to 10% of carbon, 1% to 10% of iron, 1 to 10% of sodium and 0.01% to 1% of scandium; the structure ceramic metal abrasion is prepared by the steps of: selecting the ore powder, adding the ore powder into the lubricating oil or the lubricating grease according toa certain proportion and carrying out emulsification and diffusion treatment; a right amount of reduction material is added into machine oil of an engine; in the running process of mechanical equipment, the reduction material is combined with engine body elements on the frictional negative surface by virtue of the heat energy generated by the high temperature gas and the friction of the engine toform a smooth and hard structure ceramic protective layer, thereby achieving the purpose that frictional factors of the machine elements are decreased, the abrasion is reduced, the service life of the machine elements is prolonged and the oil is saved.

The container gas spraying fire extinguishing device comprises a container, a fire fighting cabinet is installed at the center of the bottom end in the container, a gas steel cylinder is installed on the bottom end face in the fire fighting cabinet, an electromagnetic valve is connected to the top end face of the gas steel cylinder through a bolt, a spraying head is arranged on the side, away from the gas steel cylinder, of the fire fighting cabinet, and the spraying head can rotate by 360 degrees; the container has the beneficial effects that the structure and layout of the fire-fighting gas spraying pipeline can be redesigned according to the space size of the container and the fire-fighting requirements of objects installed in the container, the situation that only one gas spraying head is installed in the middle of a fire-fighting pipeline in the container is reduced, and the fire-fighting efficiency is improved. Meanwhile, the steel cylinder pressure of fire extinguishing gas is increased, and the gas pressure in the pipeline is improved by changing the pipe diameter of the pipeline, so that the quick and safe fire extinguishing function is realized, and personnel can conveniently inspect, maintain and replace the spraying pipeline.

The invention particularly relates to an engine combustion nonuniformity detection system and method, and the system comprises a vibration sensor which is disposed on a cylinder body of an engine and is used for detecting a vibration signal of the cylinder body; the pipe clamp sensor is arranged on a high-pressure oil pipe of the engine and used for detecting a high-pressure oil pipe pulse signal of the high-pressure oil pipe; the data acquisition card is electrically connected with the vibration sensor and the pipe clamp sensor respectively; and the controller is electrically connected with the data acquisition card, and judges whether the engine burns unevenly or not according to the vibration signals and the high-pressure oil pipe pulse signals acquired by the data acquisition card. According to the engine combustion non-uniformity detection system provided by the invention, fault detection of combustion non-uniformity of each cylinder of the engine is completed by adopting a signal processing means according to signals detected by the vibration sensor and the pipe clamp sensor.