89results about How to "Raise emission levels" patented technology

A combustion device used in gas turbine engines includes an annular combustor that contains the combustion process of air and fuel and then guides the hot gas products to a first stage turbine subsection of a gas turbine engine. The annular combustor has an inner/outer shell having corrugated surfaces that extend radially outward and inward across an entire hot gas stream inside the annular combustor. The corrugations twist about the engine centerline in a longitudinal direction of travel of the engine. The resulting flow path accelerates and turns the hot gas stream to conditions suitable for introduction into the first stage turbine blades, which eliminate the need for first stage turbine vanes. The annular combustor is configured with a system of fuel and air inlet passages and nozzles that results in a staged combustion of premixed fuel and air.

Disclosed is a method and apparatus for the reduction of organic compounds and other emissions from an industrial plant utilizing a cement or minerals kiln that has a high level of organic compound emissions. The invention consists of a filter for the control of particulate emissions which has been treated with a catalyst to provide catalytic destruction of gaseous emissions as process gases are passed through the porous medium of the filter.

In an exhaust gas recirculation arrangement in which condensate is discharged from an exhaust gas recirculation path of an internal combustion engine, in particular of a motor vehicle, wherein, due to a pressure difference between a condensate collection region arranged in the EGR path and a condensate discharge region, collected condensate is discharged at least partially from the condensate collection region into the condensate discharge region, when the pressure level prevalent in the condensate collection region is greater than in the condensate discharge region in a secure manner and with low environmental impact.

The invention discloses a reinforced alloy material; and a surface layer of the alloy material contains such elements as aluminum oxide, silicon dioxide and nanometer graphene. The alloy material is deeply extended on the basis of anodic oxidation, microarc oxidation and multi-component composite oxidation, and is a result under a complex effect of instant high temperature, multi-component composite oxidation liquid and nanometer penetrant through applying positive and negative high voltage, high current and positive and negative pulses by using unique structures, physical and chemical characteristics as ultrahigh hardness and high-temperature resistance, small size effects and surface and interface effects of such nanometer materials as nanometer graphene and nanometer silicon dioxide. The method comprises the steps of: (1) surface cleaning; (2) oxidation; and (3) penetration. The light alloy material after surface reinforcement by the method, in particular a combustion chamber of an internal combustion engine with fuel combustion consumption and generating a pollution source is prominent in reflection thermal insulation anti-carbon self catalysis function, and is higher in high-temperature erosion resistance and wear resistance.

A system, a method, and an article of manufacture for adjusting CO emission levels in predetermined locations in a boiler system are provided. The boiler system has a plurality of burners and a plurality of CO sensors disposed therein. The system determines locations within the boiler system that have relatively high CO levels utilizing the plurality of CO sensors and then adjusts A/F ratios of burners affecting those locations to decrease the CO levels at the locations.

The invention provides a device for cracking the burnt methane of a gasoline engine. The invention is provided with a methane cracking air injection valve, a methane providing system, a methane cracking device and a fuel switching system mainly on the basis of the prior gasoline motor injection control system. The methane is cracked into carbon monoxide and hydrogen under the action of a catalyst by heating the methane cracking device and the carbon monoxide and the hydrogen are used for the engine. The device can realize the quick combustion and solve the problem that cold starting is difficult to carry out by burning methane; moreover, the device has simple structure and convenient use, thereby easing the energy shortage situation of a country; in addition, the burning of the cracked methane can greatly improve the vehicle discharge level and the fuel economical efficiency.

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 oxygen sensor-based urea jet control device for a diesel and a control method for urea jet control device, and relates to a post-treatment selective catalytic reduction (SCR) control technology of the diesel. The jet control device comprises an electric control unit (ECU), a urea box, a urea pump, a urea nozzle, an SCR box, an SCR box front air exhaust pipe, an SCR box rear air exhaust pipe, an SCR box front oxygen sensor and an SCR box rear oxygen sensor, wherein the SCR box front oxygen sensor and the SCR box rear oxygen sensor are respectively arranged on the SCR box front air exhaust pipe and the SCR box rear air exhaust pipe; closed-loop control of jet volume of urea, namely NH3 is realized through signals of the SCR box front oxygen concentration sensor and the SCR box rear oxygen concentration sensor; a calibration value of NOx discharged from tail gas is corrected and compensated through the signals of the SCR box front oxygen sensor and the SCR box rear oxygen sensor; and the reaction efficiency of the SCR box is judged through the signals of the SCR box front oxygen sensor and the SCR box rear oxygen sensor, and the jet volume of the NH3 is accurately controlled; and the price of the oxygen sensor is far lower than that of a NOx sensor. By the urea jet control device, urea jet is controlled through the signals of the SCR box front oxygen sensor and the SCR box rear oxygen sensor, so that the cost of post-treatment systems is greatly reduced.

The invention discloses a frame structure integral air flue for a multi-valve diesel engine. An air flue outer frame is provided with 4-6 cylinders; each cylinder is provided with a tangential air inlet channel and a spiral air inlet channel and a parallel air exhaust channel; the air inlet channels and the parallel air exhaust channels are uniformly distributed on the peripheries of the corresponding cylinders ; two branches of each parallel air exhaust channel are communicated with a first air exhaust valve and a second air exhaust valve respectively; the tangential and spiral air inlet channels are communicated with a first air inlet valve and a second inlet valve respectively; the air inlet cavity of each pair of tangential and spiral air inlet channels is provided with an inwardly-concave integral sand core; one end of the inwardly-concave integral sand core is connected with the outer frame, and the other end of the inwardly-concave integral sand core is connected with the tangential and spiral air inlet channels; the air flue outer frame is provided with a cooling water jacket positioning groove; and the central line of each cylinder is coincided with the central line of the positioning groove. Due to the adoption of the frame structure integral air flue, the swirl rate of each cylinder air flue can be kept uniform and consistent, each air flue core is assembled and positioned accurately, the assembling error is effectively lowered, the problem of non-uniform burning of each cylinder caused by inconsistent swirl rates is effectively improved, and the economic efficiency and discharging level of the diesel engine are improved.

The invention discloses a high-power fuel gas heating water heater control system which comprises a main controller, and a fuel gas proportion valve and a fan connected with the main controller. The high-power fuel gas heating water heater control system is characterized in that the fan is the double-speed fan with a high grade and a low grade; and the main controller controls the double-speed fanto work on the high grade or the low grade according to the opening degree of the fuel gas proportion valve. According to the high-power fuel gas heating water heater control system provided by the invention, the air speed of the fan with the high grade and the low grade is used for adapting to the combustion loads of a fuel gas heating water heater, so that when the fuel gas heating water heaterruns at a small-power load section, the fuel gas heating water heater can have higher combustion heat exchange efficiency, the comprehensive running heat exchange efficiency of the fuel gas heating water heater is improved, the effects on energy conservation and emission reduction are achieved, and meanwhile, the long-time use safety stability of the fuel gas heating water heater is improved. Meanwhile, the high-power fuel gas heating water heater control system is low in failure rate, reliable to run, and highly valuable in industrial application. The invention further provides a high-powerfuel gas heating water heater control method.

The present invention relates to an assay for the determination of a microorganism including a lysing chamber having triangular shaped metallic structures wherein the apexes of two triangles are arranged in alignment and forming a reactive zone for placement of the microorganism and lysing by microwave energy for exposing and isolating a target polynucleotide sequence. The isolated target polynucleotide sequence is introduced to an assay system for contact with polynucleotides which are complimentary to the isolated target polynucleotide sequence. Fluorophore-labeled capture polynucleotides are added for hybridizing to any bound target polynucleotide. Bound target polynucleotides are detected by metal enhanced fluorescence.

The invention discloses engine ignition control and fuel injection control methods based on engine cycles. The engine ignition control method comprises the steps of a, judging the operation condition of an engine; and b, and independently controlling the ignition angle of advance and fuel injection quantity of the engine in each working cycle under the condition. According to the engine ignition control and fuel injection control methods, control for ignition and fuel injection of the engine is refined in each working cycle of the engine, control parameters (ignition time, fuel injection pulse width and fuel injection phase position) of all the working cycles of the engine are more accurate, the accuracy of the control parameters under the transition working condition is guaranteed, and finally, the dynamic property, economy and emission level of the engine are improved to the greatest extent.

The invention relates to a hydrogen engine comprising a hydrogen supplying system, an air intake system, an engine body and an exhaust system, wherein the hydrogen supplying system comprises a high pressure hydrogen bottle, a solenoid valve, a first-grade reducing valve, a second-grade reducing valve, a flame arrestor and a connecting pipeline. A hydrogen pressure temperature sensor is arranged in a hydrogen air-rail, an air intake pressure temperature sensor is arranged at the front end of a pressure stabilization cavity of an air intake manifold, and a wide scope oxygen sensor is arranged on an exhaust manifold of the exhaust system, an electronic throttle is arranged at the front end of the air intake manifold, the hydrogen pressure temperature sensor, the air intake pressure temperature sensor and the wide scope oxygen sensor transmit signals to an ECU (electronic control unit). In the hydrogen engine, gasoline is replaced by hydrogen to be used as engine fuel, and CO2 emission is reduced to the maximum extent on the basis of not changing the engine body and not increasing the engine cost, so as to improve the emission level of the engine.

The invention discloses a methanol and hydrogen dual-fuel power system. The thermal efficiency of gasoline and diesel engines is only 20-45%, and waste heat of tail gas is discharged into the atmosphere and is not effectively utilized, so that energy waste is caused. The methanol and hydrogen dual-fuel power system comprises an engine (20), a hydrogen production device (5), a methanol box (1) anda cold start electric heating hydrogen production device (8), and the methanol box communicates with a methanol injection rail (16) on an engine intake manifold, a methanol inlet of the cold start electric heating hydrogen production device and a methanol inlet pipe of the hydrogen production device through pipelines; and the methanol inlet pipe of the hydrogen production device is connected to the hydrogen production device of an engine exhaust pipe (22), one end of a gas outlet pipeline of the cold start electric heating hydrogen production device communicates with a gas inlet of the hydrogen production device through an electromagnetic three-way one-way valve (9), the other end of the gas outlet pipeline communicates with a gas cooling and gas-liquid separating device (10), and a methanol outlet of the gas cooling and gas-liquid separating device communicates with the methanol box through a pipeline. The invention is used for the methanol and hydrogen dual-fuel power system.

A field emission display. Gate electrodes are formed in a predetermined pattern on a first substrate. An insulation layer is formed on the first substrate covering the gate electrodes. Cathode electrodes are formed in a predetermined pattern on the insulation layer. Emitters are provided electrically contacting the cathode electrodes. A second substrate is provided opposing the first substrate with a predetermined gap therebetween. The first substrate and the second substrate form a vacuum container. An anode electrode is formed on a surface of the second substrate opposing the first substrate. Phosphor layers are formed in a predetermined pattern on the anode electrode. Portions of the cathode electrodes are removed to form emitter-receiving sections. Fences are formed between the emitter-receiving sections, one of the emitters being provided in each of the emitter-receiving sections electrically contacting the cathode electrodes.

The invention provides a gas flow control method and device of dual-fuel engine. The method comprises the following steps: acquiring current revolving speed information and current power information of the engine and current open degree of a gas flow control valve; inquiring required open degree of the gas flow control valve in an MAP chart according to the current revolving speed information and the current power information; controlling through proportional integral according to the current open degree and the required open degree, and outputting a driving control signal so as to control the engine to run under the required open degree of the gas flow control valve, wherein the MAP chart is a relation chart of the revolving speed of the engine and the required open degree of the gas flow control valve. The method can effectively improve emission level of the engine on the premise of relatively low modification, application and maintenance costs.

A power converter designed for operation at high frequencies includes a soft-switching cell comprising a split inductor, a resonant inductor, a resonant capacitor, two diodes and a controlled semiconductor. Alternatively, the power converter includes a soft-switching cell comprising a transformer having isolated windings, a resonant inductor, a resonant capacitor, two diodes and a controlled semiconductor.

The invention relates to an electric control engine speed adjustment characteristic curve design method. According to the electric control engine speed adjustment characteristic curve design method, a curve of which speed adjustment rate is zero is adopted to replace a curve in an original speed adjustment characteristic curve, wherein the load rate of the curve in the original speed adjustment characteristic curve is low, and an obtained curve is a new speed adjustment characteristic curve; and the curve in the original speed adjustment characteristic curve, of which the load rate is low, is a curve of which the rotation speed is higher than that of a curve corresponding to a second inflection point, wherein the second inflection point is a point located between a point where the power value of the original speed adjustment characteristic curve is 70% of the power value of a rated power point, and a G point. With the electric control engine speed adjustment characteristic curve designed by the method of the invention adopted, an engine will not enter a high-rotation speed and low-torque area below the original speed adjustment characteristic curve under control, and therefore, oil consumption and emission level of the engine can be improved, and the service life of the engine can be prolonged, and dynamic and driving performance of the engine will not be affected.