102results about How to "Reduce harmful emissions" patented technology

A system for reducing NO_x emissions, includes a reformer configured to receive a fuel and produce a hydrogen-enriched stream, a combustion system configured to burn the hydrogen enriched-stream and produce electricity and an exhaust stream, and a recuperator configured to recover heat from the exhaust stream, wherein the recovered heat is recycled back to the reformer.

The invention relates to an operating method and to a device for a gas-driven internal combustion engine. According to the invention, the pressure in a gas injection system is adapted to the operational state of the internal combustion engine. A higher pressure is adjusted in the gas injection system during a higher charge of the internal combustion engine. Said higher pressure enables a higher volume flow through the gas injection valves associated with the gas injection system. The power produced by the internal combustion engine can be optimized. A lower pressure in the gas injection system is adjusted in the event of a lower charge or if the internal combustion engine is switched off. The lower pressure emits lower pollutant emissions which are produced by the internal combustion engine. The invention is characterized by a bi-directional interface between a control device and a pressure reducer or pressure controller.

A burner insert for a gas turbine combustion chamber is provided. The burner insert includes a burner insert wall including a cold side and a hot side, an edge delimiting the burner insert wall. The edge includes an edge bar extending at least partially circumferentially and projecting beyond the cold side. A burner opening for inserting a burner is formed in the burner insert wall.

An electrically controlled and hydraulically driven vehicle with individual drive and brake of wheel and recovering braking energy has an engine and a hydraulic energy accumulator. Each wheel is equipped with a bidirectional hydraulic motor. Said engine are connected to hydraulic pump. Said hydraulic pump and each hydraulic motor are communicated to the hydraulic energy accumulator. Its electric control unit can receive the signals of different sensors and control engine and hydraulic motors. Its advantages include optical economic efficiency, recovering braking energy, reducing discharge of harmful substances, high performance, simple structure and low cost.

A microprocessor controlled automated, multi-fuel apparatus to blend hydrogen, bio-fuel and/or natural or propane gases. This novel multi-stage apparatus first converts cooking oils into bio-fuel. The system automatically blends the bio-fuel with at least one of or both hydrogen gas, generated by a self-contained on-board hydrogen electrolyzer, and/or natural or propane gases. This blended “Hyenrich” gaseous fuel drives various processes including, but not limited to, cogeneration systems and electrical generators to produce “green” electricity by utilizing an adaptive and predictive learning algorithms to significantly reduce cost per kilowatt and lessen dependency on the over taxed utility grid, while simultaneously reducing emissions of CO, CO2 and NOx, making the method and apparatus an environmentally-friendly energy device.

The invention relates to a novel laser welding piston with a forged steel structure. The piston comprises a forged piston ring body and a piston body, wherein the piston ring body and the piston body are welded by laser; a closed cooling oil chamber is formed between the piston ring body and the piston body and is communicated with the external through an oil inlet hole and an oil outlet hole; the lower part of the piston ring body is provided with an oil ring groove; the piston body corresponding to the position of the oil ring groove is provided with an annular groove; a girdle band is arranged between the oil ring groove and the annular groove; the girdle band is provided with a plurality of oil return holes communicating the oil ring groove and the annular groove; or the lower side of the oil ring groove is provided with a plurality of level oil return blind holes. The piston reduces weight of the piston, and increases flexibility of the piston body; and the oil return holes or the level oil return blind holes are favorable for back flow of machine oil of the oil ring groove, particularly the machine oil at the bottom of the oil ring groove so as to prevent the spilling of the machine oil caused by high pressure of the machine oil, and contribute to reducing machine oil consumption and harmful emissions of motors.

The invention relates to a method for preparing MBTH. The preparation process comprises synthesis of N-methyl-N-phenyl thiourea(I) with N-methyl aniline as raw materials; separation of N-methyl-N-phenyl thiourea(I) and preparation of 3-methyl-2-imino benzothiazole(II) by reacting with bromine; and preparation of targeted compound MBTH(III) by the reaction between (II) and hydrazine hydrate. The MBTH can be used for detecting the formaldehyde content in air.

The invention discloses a control method for efficiently and quickly starting an engine. The engine applies a solenoid-driven inlet valve and a solenoid-driven exhausting valve, and is subjected to positioning and electric current double closed-loop feedback control by an engine electric control unit, so as to achieve the independent, continuously variable and real-time regulation of the opening moment, the closing moment, the lift range and the motion rule of the inlet valve and the exhausting valve of the engine; as in the process that the rotational speed of the engine rises step by step, the inlet valve basically keeps an opening state and stops the oil spraying and the ignition of each cylinder until a set rotational speed is reached, under the same power of a starting motor, the transition time can be obviously shortened; and the energy-saving performance and the environment-friendly performance of the engine can be improved.

A catalytic converter includes an inner liner housing a catalyst and an outer liner concentric with the inner liner. In one example, the liners are cylindrical tubes arranged between opposing dies during manufacture. The dies are moved toward one another to plastically deform the ends inwardly to form a conical flange. The forming process provides a sealed cavity between the walls of the inner and outer liners that insulates the hot catalyst housed within the inner liner from the environment exterior of the catalytic converter assembly. First and second tapered connecting tubes are welded onto the opposing ends of the catalytic converter in the area of the flange.

The present invention discloses a digital ignition control method of miniature carburetor gasoline engine and its device. Said method and device can control ignition angle when the engine is being invarious running conditions, specially can regulate ignition angle according to the difference value of the true running idle rotating speed and target idle rotating speed, when the difference value is positive value, the ignition angle can be reliatively reduced, when the difference value is negative value, the ignition angle can be relatively increased, after the control process is passed through a part of time, the rotating speed of the engine can be fluctuated around some average rotating speed, said average rotating speed is the target rotating speed.

An improved fire grate may provide fresh oxygen rich air to a secondary combustion zone, created by the improved fire grate, of a combustion chamber where a combustion gas stream is typically oxygen starved assisting in the burning process of incompletely burned particulates and reducing other harmful emissions. A baffle plate may be introduced in the secondary combustion zone to increase a combustion chamber temperature, encourage mixing of oxygen starved air with oxygen rich air and increase a residence time of the combustion gas within the combustion chamber. These aspects of the baffle plate promote more efficient burning of the biomass/fuel. Additionally, log lighter(s) may be disposed in the secondary combustion zone to increase a temperature of the combustion chamber for the purposes of reducing harmful emissions. The improved fire grate may be horizontally and vertically adjusted to fit within different sized fireplace combustion chambers.

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 discloses an opposite-piston, two-stroke and variable-compression-ratio type gasoline engine, and relates to the field of internal combustion engines. The gasoline engine comprises a cylinder body, a gear synchronizing mechanism, a first spark plug, a second spark plug, a gasoline injector and a motor, wherein the cylinder body is connected with the gear synchronizing mechanism through a crankshaft; the first spark plug, the second spark plug and the gasoline injector are arranged on the outer circumferential wall of the cylinder body; the gear synchronizing mechanism provided with a gas feeding side gear and a gas exhausting side gear is connected to the motor; the gas feeding side gear is connected with a gas feeding side crankshaft; the gas exhausting side gear is connected with a gas exhausting side crankshaft; at least two intermediate gears are arranged between the gas feeding side gear and the gas exhausting side gear; the gas feeding side gear, the intermediate gears and the gas exhausting side gear which are engaged with each other are connected through connecting plates. According to the opposite-piston, two-stroke and variable-compression-ratio type gasoline engine, the movement phase difference of opposite pistons can be changed through the gear synchronizing mechanism, so that the cylinder working capacity can be changed when the opposite pistons are positioned at inner stopping points and outer stopping points, and as a result, the compression ratio of the gasoline engine in working can be varied.

This invention relates to an explosion motor as a power machinery device, which converts the chemical energy into heat and dynamic and machinery energy. It uses high temperature and high-pressure working substance to finish the heat conversion. The explosion motor generates the gas working substance of the explosion reaction through effective control of the gas phase explosion and special pressure decreasing input device approximately inputting.

The invention provides an automotive chemical regulator which can be generally used by pluralities of fuels. The regulator which is added in automotive fuels (gasoline, gasohol and diesel fuel) can stimulate the perfect combustion rate of the fuels and improve the heat efficiency through improving the combustion performance of the fuels in an internal-combustion engine (petrol engine and diesel engine). The invention is capable of reducing the oil consumption of a car by 10 to 16 percent, increasing the horsepower of the internal-combustion engine by 5 to 10 percent, reducing the discharge amount of harmful substances in car exhaust by 45 to 50 percent, reducing the carbon deposition in an air cylinder by 60 to 70 percent, and prolonging the service life of the internal-combustion engine. The invention also has the functions of cleaning fuel spray nozzles and fuel lines of the internal-combustion engine, reducing the precipitation of fuel colloid, being favorable for the starting of the internal-combustion engine, and the like. The regulator is liquid preparation which is prepared by organic active matters, alcohols substance, detergent, corrosion inhibitor, solvent and the like chemical substances according to proper proportion. When in use, the invention is directly added in automotive fuel according to the proportion by weight (or volume conversion proportion) of 0.2 to 0.5 / 1000. The invention is adapted to internal-combustion engines in various type, various brand fuels and various climates.

The automobile tail gas catalyzing unit includes an expanding section and a main carrier section. The expanding section is provided with porous spherical honeycomb board in the inlet plane fixed to the conic casing and tail gas tube and the spherical honeycomb board has dense flow channels with maximum angle to the axis being the expanding angle of the said section. The main carrier section consists of conic honeycomb sheets arranged discretely with flow channel direction perpendicular to the surface. The present invention may be used in gasoline engine catalyzing device and diesel engine catalyzing device and can homogenize tail gas flow rate, raise mass transfer rate, reduce the radius of the catalyzing device and reduce the harmful exhaust.

The invention discloses a fuel injecting electronic unit pump of a single-cylinder diesel engine. The fuel injecting electronic unit pump comprises a guiding sleeve and an electronic control pump part. An axial electronic control pump part installing hole is formed in the guiding sleeve, a fuel feeding hole and a pressure stabilizing hole are formed in the sleeve wall of the guiding sleeve, and the lower portion of the guiding sleeve is connected with a holding body part through an elastic clamp ring and a guiding block. A plunger valve of the electronic control pump part is partly inserted into the electronic control pump part installing hole and fixedly connected with the guiding sleeve through a fastener. An annular fuel feeding groove in the electronic control pump part is aligned with the fuel feeding hole and the pressure stabilizing hole. A fuel feeding screw installed in the fuel feeding hole is connected with a fuel feeding pipe of the diesel engine, and a pressure stabilizing valve part installed in the pressure stabilizing hole is connected with a fuel returning pipe of the diesel engine. The fuel injecting electronic unit pump is directly installed on a gear chamber cover of a cylinder body of the single-cylinder engine and driven by a camshaft of a fuel pump to feed fuel, and under the condition that the engine is not greatly modified, it is achieved that the emission level of an existing diesel engine with a mechanical in-line pump is upgraded from the level of the non-road second-stage national standard to the level of the non-road third-stage national standard or the level of a higher standard.

A method and apparatus for the generation of synthetic motor fuels and additives to oil fuels, C₁-C₄ alcohols, hydrogen, methane, synthesized gas (H₂+CO₂) by hydrothermal treatment of carbonaceous compounds by providing a two-stage carbon gasification process operated under the supercritical conditions of H₂O and CO₂, including a first stage gasification reactor having a reaction zone for the conversion of carbonaceous compounds and a second stage reactor for the conversion of the products of the first stage reactor; feeding a aqueous suspension of carbonaceous compound in an amount of at least 30% by weight and an alkali metal or alkaline-earth metal catalyst or reactive OH— species from an electrolyzer through said first stage gasification reactor as a supercritical fluid at a volume velocity of 0.01-0.05 g of carbon per 1 cm³ per hour, at a carbon/catalyst mole ratio of between about 70/1 and 90/1, at a temperature of 390-450° C., and under a pressure of about 225 to 500 bars; feeding the reaction products from the first stage reactor to the second stage reactor over a copper-zinc catalyst at the temperature of 200-280° C. and under a pressure of at least about 100 bars so that any gases generated in the first stage are converted into C₁-C₄ alcohols with the weight ratio of C₁-C₂ to C₃-C₄ between about 0-35% to 100-65%.

The invention discloses a fuel injection electronic unit injector of a diesel engine, which comprises a plunger and barrel assembly, a plunger spring, a plunger spring base, a plunger cushion block, an elastic collar, a rocker cushion block, a fuel atomizer nut, an electromagnetic valve and a fuel atomizer, wherein the fuel atomizer and the electromagnetic valve are stacked in the electromagnetic valve nut from bottom to top, and are tightly connected with the plunger and barrel assembly through threads in advance; a pump body and a control valve base are provided with auxiliary pressure fuel passages (including pressure fuel passages and bypass fuel passages) communicated with a fuel pressure cavity and a main pressure fuel passage leading to the fuel atomizer; and one to three fuel passages and bypass fuel passages are arranged in pairs. The invention can realize the accurate and flexible control of optimum fuel injection quantity, optimum fuel injection time and fuel injection pressure, improve combustion in the engine cylinder, increase fuel taking speed and quantity, and reduce fuel sucking resistance and friction when a spool moves and the reset load of the plunger spring so that the harmful effulent of the engine is reduced and the economical, dynamic and intelligent properties of the engine are improved.