129results about How to "Reduce intake air temperature" patented technology

The invention discloses a new energy automobile fuel cell system, a working method, a hydrogen inlet flow calculation method and an efficiency evaluation method, Belongs to the technical field of newenergy. Keys points of the new energy automobile fuel cell system are that the new energy automobile fuel cell system comprises an air supply system, a hydrogen supply system and a fuel cell stack, wherein the air supply system provides fresh air for the fuel cell stack, and the system comprises an air filter, a centrifugal air compressor, a gas heat exchanger, a humidifying and intercooling assembly, a throttle valve, a water segregator, a drain valve, a turbine and a back pressure valve; the hydrogen supply system provides fresh hydrogen for the fuel cell stack and comprises a hydrogen tank,a pressure reducing valve, an ejector, a water distributor, a water distribution valve, a nitrogen discharger, a nitrogen discharge valve, a first one-way valve, a circulating pump and a second one-way valve; and the fuel cell stack is a place where hydrogen and air react, and chemical energy is converted into electric energy to provide kinetic energy for accessory mechanisms and loads. The invention aims to provide the new energy automobile fuel cell system, the working method, the hydrogen inlet flow calculation method and the efficiency evaluation method, the stability of the fuel cell isimproved, and the efficiency of the fuel cell is conveniently calculated and evaluated.

An intake gasket to be inserted between a cylinder head and a manifold, comprising an intermediate rib member 1 with a three-layer structure formed from a thin metal plate 11 and rubber layers 12 and 12 provided on both sides of the thin metal plate, metal plates 2 and 2 disposed on both sides of the intermediate rib member 1, and elastic metal substrates 3 and 3 disposed on both sides of the metal plates 2 and 2, the intermediate rib member 1 comprising a first rib 15 formed around the periphery thereof and a second rib 14 formed around the periphery of a fluid passage hole, wherein a space is formed from the rib of the intermediate rib member 1 and the metal plates 2 and 2 disposed on both sides of the intermediate rib member 1. The intake gasket can shut out heat from the cylinder head so as to make transmission of heat to the manifold difficult.

The invention relates to an electricity-auxiliary two-stage supercharging system capable of reusing exhaust gas, belonging to the technical field of waste gas turbine supercharging. The electricity-auxiliary two-stage supercharging system specifically comprises the first-stage booster of an electricity-auxiliary turbine, the second-stage booster of a waste gas turbine, an electromagnetic three-way valve, an inlet and outlet pipeline system, a supercharging control circuit and an engine system. In the electricity-auxiliary two-stage supercharging system, the flexible control of opening and closing the three-way electromagnetic valve is used for further improving engine intake pressure by a second-stage supercharging system while solving the problem of waste gas turbine supercharging delaying, thereby realizing the high-pressure ratio of the engine supercharging, and improving the power and the emission performance of the engine under the whole working condition; the waste gas applying work in the second-stage booster of a waste gas turbine can be further utilized in the first-stage booster of an electricity-auxiliary turbine; and a storage battery is charged by power generation to fully utilize waste gas energy and effectively utilize fuel energy. Thus, the electricity-auxiliary two-stage supercharging system has an important energy-saving meaning.

The invention discloses a gas turbine generation peak regulation system based on the liquid air energy storage technique, comprising a gas turbine generation subsystem, an air liquefaction-separationsubsystem, a liquid air energy release subsystem and a cold storage unit subsystem. During trough period, surplus electricity generated by the gas turbine generation subsystem is converted into low-temperature cold energy stored in liquid nitrogen and oxygen; during peak period, liquid nitrogen cold energy in the air liquefaction-separation subsystem is converted into electricity, liquid oxygen that absorbs heat and vaporizes is supplied to a combustion chamber for rich-oxygen combustion, and intake temperature is decreased; a cold storage unit stores inside cold energy, released by the liquidair in the liquid air energy release subsystem during gasification by preheating, during peak period, and applies the stored cold energy to precooling in the air liquefaction-separation subsystem before air liquefaction during trough period. The gas turbine generation peak regulation system based on liquid air energy storage technique can recycle waste heat from gas turbine exhaust, decrease intake temperature and provide a rich-oxygen combustion environment, thereby improving efficiency; after grid connection, the system allows peak load shifting and has high energy-storing efficiency.

The invention aims at providing a marine diesel engine tail gas waste heat power generation system utilizing an S-CO2 and ORC combined cycle. The system comprises a diesel engine exhaust heat exchanger, a super-critical CO2 cycle power generation system and an ORC cycle power generation system. The super-critical CO2 system and the ORC system jointly recycle tail gas waste heat of a diesel engine. The device is composed of the super-critical CO2 circulating system and the ORC circulating system matched with the super-critical CO2 circulating system. Heat conducting oil is adopted as a heat transfer medium, and the tail gas waste heat is transmitted to the super-critical CO2 circulating system and the ORC circulating system and serves as a heat source for the two circulating systems. The super-critical CO2 circulating system and the ORC circulating system are matched for power generation. A finned tube heat exchanger is connected to a diesel engine exhaust channel, the heat conducting oil passes through a channel inside heat exchanger tubes, and diesel engine tail gas passes through channels outside the tubes. The exhaust waste heat energy of the marine diesel engine is effectively recycled and converted into electric energy, waste heat of a marine main engine is comprehensively recycled, the heat efficiency of the diesel engine is remarkably improved, and the ship EEDI energy-consumption index is reduced.

The invention discloses a low-temperature air intake method for an internal combustion engine, and an engine. The engine comprises an air cylinder piston mechanism, wherein an exhaust channel of the air cylinder piston mechanism is provided with a refrigerating unit in which exhaust residual energy is taken as driving force; and the refrigerating unit is used for cooling inflow air in an air intake channel of the air cylinder piston mechanism. According to the residual energy refrigeration low-temperature engine provided by the invention, the residual energy of exhaust is used for acting, so that the air intake temperature of the air cylinder piston mechanism is lowered, and the efficiency of the engine is increased.

The invention discloses an APU system module cooling device and a method. The cooling device comprises an engine cooling water circuit, an engine intake cooling air circuit and an engine cooling water circuit, and the three cooling modules are of independence and noninterference; in addition, a traditional mechanical water pump is changed to a controllable water pump, so that the power consumption of a cooling system under the low speed working condition of an APU assembly is reduced; a traditional mechanical fan is changed to an electronic fan which is controlled in a blocking manner; the series connection of traditional cooling modules is changed into parallel connection, and the cooling modules are additionally provided with water inlet and outlet temperature sensors and air inlet and outlet temperature sensors; the traditional mechanical water pump is changed to the controllable electronic water pump and an electric control silicone oil pump. The cooling method is used for separately controlling engine cooling, engine intake cooling and generator cooling, and the speed of the electronic fan and the water pump is controlled by a control unit through the temperature sensors, and the system is controlled within the optimal working temperature range.

The invention relates to a system for real-time monitoring and evaluating the operation energy efficiency of an industrial air compression station. The system comprises an industrial air compression station operation energy efficiency monitoring system and an operation energy efficiency evaluating system, wherein the industrial air compression station operation energy efficiency monitoring system is used to measure the compressed air flow of the air compression station, acquires pressure difference of various sections of an air compression system of the industrial air compression station through pressure sensors, and acquires current values of the driving motor of each air compressor, the industrial air compression station operation energy efficiency evaluating system is used to accurately evaluate the operation energy efficiency level of the air compression station. The system solves the major problems existed in a conventional system for monitoring and evaluating the operation energy efficiency of an industrial air compression station, such as lack of reasonable evaluation criteria for evaluating actual operation efficiency of the industrial air compression station, impossibility of accurately evaluating the energy-saving operation potential of the industrial air compression station, and lack of convenient and rapid flow measuring equipment that can be installed without stopping a device. A comprehensive and reasonable industrial air compression station operation energy efficiency evaluation method is provided, and the system has importance practical meanings.

The invention provides a heat exchange device of an air inlet and outlet pipe system and belongs to the technical field of mechanical design. The heat exchange device of the air inlet and outlet pipe system comprises an air inlet pipe, an engine, an air outlet pipe, an air compressor, a turbine, connecting pipes, a volume cavity, a moving body and a spring. The moving body is installed in the volume cavity and contacted with the inner wall surface of the volume cavity in sealing mode, a penetrating pipe penetrates through the upper wall surface and the lower wall surface of the moving body, and two ends of the spring are respectively connected with a left wall surface of the moving body and the left wall surface of the volume cavity. When the engine is at a low-speed working condition, the moving body moves rightward in the volume cavity, a second connecting pipe is communicated with a fifth connecting pipe, outlet air waste heat is used for heating inlet air, cold starting performance of the engine is good; and when the engine is at a high-speed working condition, the moving body moves leftward in the volume body, and the second connecting pipe is separated from the fifth connecting pipe. The heat exchange device of the air inlet and outlet pipe system is reasonable in design, simple in structure and suitable for an engine inlet air heating system with a turbocharger.

The invention relates to the waste gas treating field of electroplating industry, in particular to a waste gas treating system. The waste gas treating system comprises a gas scrubbing tower. The front end of the gas scrubbing tower is provided with a cyclone separating tower, an air inlet part of which is provided with a plurality of gas inlet pipelines, and each gas inlet pipeline is respectively provided with a suction fan and an air suction cover. By taking the air inlet part of the cyclone separating tower as a connecting part, the gas inlet pipelines are counterclockwise arranged in the circumferential tangential direction of the air inlet pipeline. The gas inlet pipeline is respectively provided with a check baffle plate. At least one gas inlet pipeline at the front end of the cyclone separating tower is provided with equipment for pretreating special waste gas. The cyclone separating tower is provided with a cooling device. The system is provided with switches for flexibly adjusting the suction fans according to the treating requirement, therefore, the operation cost can be controlled, and the waste gas of different sources and properties can be flexibly treated; the gas inlet temperature of the gas scrubbing tower is decreased, the Reynolds number is increased, the acid removing effect of the gas scrubbing tower is enhanced, the usable waste acid can be recycled, and the resources are sufficiently saved.

The invention relates to the technical field of internal combustion engines, in particular to a method for restraining the supercharge gasoline engine super detonation through double-fuel injection. According to the method for restraining the supercharge gasoline engine super detonation through double-fuel injection, gasoline is injected in an intake channel of an engine, alcohol fuel is injected in a combustion chamber one or more times, the alcohol fuel with high latent heat of vaporization is injected in intake stroke and can lower the intake temperature, the charging quantity coefficient is increased, and the dynamic property is improved; due to the compression stroke injection, the temperature of mixed gas at a compression terminal can be reduced, and premature combustion is effectively restrained; injection is conducted in the combustion process, fuel layered mixed gas can be formed, and the spreading route of detonation waves is cut off; the super detonation of a supercharge small-displacement gasoline engine can be effectively restrained through one or more times of injection, and an important support is provided for energy conservation and emission reduction of the engine. Meanwhile, only a set of intake channel injection nozzle needs to be additionally added to an existing supercharge gasoline engine, cost is low, upgrading of an existing engine product technology is forcefully supported, and the industrial prospect is good.

The invention provides an air filter gas inlet pipeline arrangement method and structure for improving engine power performance. An air filter inlet pipeline comprises a gas inlet pipe, a decoupling corrugated tube and a gas inlet assembly, wherein the gas inlet assembly comprises an overhead wind baffle and a gas inlet bent pipe, a gas inlet is formed in the overhead wind baffle, the gas inlet bent pipe is connected with the gas inlet from the portion above the overhead wind baffle, the overhead wind baffle is arranged in the position, close to the front portion of a vehicle, of the top portion of a condenser so that the gas inlet can be located in the top face of an air inlet cabin formed by the condenser, a front bumper, the overhead wind baffle and side wind baffles, and low-temperature air can be directly sucked. The air filter gas inlet pipeline arrangement structure is simple and convenient to install, and the method and the structure are beneficial to lowering the gas inlet temperature, reducing gas inlet vortexes and improving the engine power performance.

The invention provides a middle air supplementation structure of a multistage refrigeration compressor. The middle air supplementation structure comprises an air supplementation mechanism, wherein the air supplementation mechanism comprises a first air inlet channel, a second air inlet channel and a mixing chamber; the first air inlet channel and the second air inlet channel are respectively communicated with the first end of the mixing chamber; the first air inlet channel is connected with an economizer of the multistage refrigeration compressor; the second air inlet channel is connected with an outlet of an impeller of the multistage refrigeration compressor; the second end of the mixing chamber is connected with an inlet of an next grade impeller of the impeller; and an air flow injection included angle between the first air inlet channel and the mixing chamber is 30-90 degrees. According to the middle air supplementation structure of the multistage refrigeration compressor, an air supplementation flow channel is designed to sufficiently and uniformly mix low-temperature refrigerant steam obtained by flashing in the economizer with high-temperature refrigerant steam from certain grade of the impeller, so that the temperature of inlet air entering the next grade impeller of the certain grade of the impeller is reduced, and the efficiency of the compressor is improved.

The invention discloses a waste gas re-cooling system. According to the system, a waste gas re-cooler is additionally arranged in the original cooling system of an engine, so that a part of waste gasdischarged by the engine is cooled and then mixed with fresh air to enter the engine to reduce the temperature of the gas entering the engine to participate in combustion, the cooling system realizesheat exchange between cold air and hot air through air cooling so as to achieve the purpose of reducing the air inlet temperature of an air inlet manifold, the system can reduce the heat of a water cooling EGR cooler scattering into the water cooling system, the system is easy to arrange in a whole vehicle due to the fact that only the cooler is added and a large amount of space is not occupied, the cooling problem of high air inlet temperature of a gas engine and other high-detonation-pressure engines can be solved, and a high-horsepower diesel EGR route engine can also solve the cooling problem by referring to the system.

Disclosed is a fender garnish structure (1) which includes a garnish main body (11) for covering a flange of a fender. Furthermore, the garnish main body (11) is provided with a plurality of ribs (12) for creating a clearance between the flange and the garnish main body (11), a plurality of fixtures (13, 14) for securing the garnish main body (11) to a vehicle body member being located near the fender, and a plurality of rupture triggering portions for causing a breakage between the ribs (12) and both fixtures (13, 14).

The invention discloses an air intake cooling and humidifying system for a fuel cell. The air intake cooling and humidifying system comprises a humidification chamber composed of an upper cover and alower bottom; an air intake pipeline and an air outtake pipeline which are disposed on the upper cover and are not in the same radial direction; an ultrasonic atomizer provided with a plurality of ultrasonic atomizing heads and used for generating ultrasonic waves to atomize the water into aerial fog; and a first pipeline for replenishing water for the lower bottom and a second pipeline which aredisposed on the lower bottom; and a control unit configured to obtain a current air intake amount through the air intake pipeline and to control the number of operating ultrasonic atomizing heads anda liquid level in the lower bottom according to the current air intake amount. The cooling and humidifying system can change the liquid water into tiny liquid water mist by generating ultrasonic waves, and exchanges heat between the low-temperature liquid water mist and the high-temperature air, and lowers the air intake temperature and increases the humidity by the adjustment of the control unitaccording to the change of the internal temperature of a galvanic pile.

The invention discloses an air-cooled intercooler which comprises a core. The core comprises an air inlet chamber, an air outlet chamber, a radiating tube and a radiating fin, two ends of the radiating tube are respectively communicated with the air inlet chamber and the air outlet chamber, and a spoiler is arranged in the radiating tube. An air inlet and an air outlet are respectively connected onto the air inlet chamber and the air outlet chamber, the spoiler is of deoxyribose nucleic acid (DNA) duplex structure, and the spoiler is formed by two frameworks of the duplex structure and a bond-shaped fin connected between the two frameworks. The air-cooled intercooler is provided with the spoiler of the DNA duplex structure and has the advantages of good heat transfer effects and small flow resistance.

A mechanical disaligned connecting pipe communication system in the technical field of mechanical design comprises intake pipes, an engine, exhaust pipes, an air compressor, a turbine, connecting pipes, a volume chamber, a moving body and a spring, the moving body is mounted in the volume chamber and is in tight contact with the inner wall of the volume chamber, two penetrating pipes run through the upper and lower walls of the moving body, and both ends of the spring are respectively connected with the left wall of the moving body and the left wall of the volume chamber. When the engine is in a low-speed working condition, the moving body moves to the right in the volume chamber, the second connecting pipe communicates with the fifth connecting pipe, the intake air is heated by the residual heat of the exhausted air, and therefore the cold starting performance of the engine is good; when the engine is in a high-speed working condition, the moving body moves to the left in the volume chamber, and the second connecting pipe is partitioned from the fifth connecting pipe. The design of the mechanical disaligned connecting pipe communication system is reasonable, the structure is simple, and the mechanical disaligned connecting pipe communication system is applicable to an engine intake air heating system with a turbocharger.

The invention discloses a thermotube type intercooler for vehicle. The intercooler mainly consists of an integral copper fin tube, a clapboard flange disc and a concave bottom shell; the concave bottom shell comprises an air inlet and an air outlet; the concave bottom shell is connected with a clapboard; the clapboard is provided with holes alternately; the flange disc is sleeved on the integral copper fin tube and is welded on the integral copper fin tube; the integral copper fin tube runs through the holes of the clapboard; and the flange disc is connected with the clapboard in the hole opening part. The thermotube type intercooler can replace the prior aluminum intercooler, can be arranged in the front of the prior aluminum intercooler so that pressurized air is subjected to partial radiation before entering the aluminum intercooler, can effectively reduce the temperature of inlet air in the aluminum intercooler, and solve the difficult technical problems of thermal fatigue and damage caused by high temperature after the aluminum intercooler is subjected to multilevel pressurization.

The invention relates to an oilless air compressor. The oilless air compressor comprises a flywheel. An eccentric shaft is arranged on the flywheel. The eccentric shaft is connected with a piston connecting rod. A piston is connected to the piston connecting rod. An air inlet valve plate is arranged on the piston. The air inlet valve plate communicates with a piston cylinder through a channel. The piston is arranged in the piston cylinder. The piston cylinder communicates with one end of the piston connecting rod through the channel. The other end of the piston connecting rod is connected with a one-way valve. An air outlet valve plate is arranged at the top end of the piston cylinder. According to the oilless air compressor, a total-closed structure is adopted, the silencing effect of the oilless air compressor is good, the environmental adaptability is higher, the energy-saving property and environmental friendliness are good, the vibration is small, and the oilless air compressor is suitable for braking of new-energy commercial vehicles.

The invention belongs to the technical field of air compression, in particular to a novel air compression station system. The novel air compression station system comprises an air compressor for sucking and compressing air in surrounding environment and outwards outputting high-pressure air, an air-liquid separator mounted on an air outlet pipeline of the air compressor and used for separating condensate, oil and dust in the high-pressure air, an external aftercooling device used for primarily cooling the high-pressure air output by the air compressor and further removing steam components in the compressed air, an air storage tank used for temporarily storing the high-pressure air, a filter used for further filtering the high-pressure air and further removing the oil and the dust in the compressed air, and a cold dryer used for secondarily cooling the high-pressure air and further removing the steam components in the compressed air. The air temperature in each link of the novel air compression station system is reduced; the whole energy consumption is reduced; the service life is prolonged; and the quality of the provided compressed air is higher.

The invention discloses an intake temperature control device, belonging to the technical field of machine design. The intake temperature control device comprises an intake pipe, an engine, an exhaust pipe, a gas compressor, a turbine, a connecting pipe, a volume cavity, a moving body and a spring, wherein the moving body is arranged in the volume cavity and is in sealed contact with the inner wall surface of the volume cavity, two through tubes penetrate through the upper wall surface and the lower wall surface of the moving body, and both ends of the spring are respectively connected with the right wall surface of the moving body and the right wall surface of the volume cavity. When the engine is in a low-speed work condition, the moving body is moved leftwards in the volume cavity, a second connecting pipe is communicated with a fifth connecting pipe, the intake air is heated through the exhaust waste heat, and the cold startup performance of the engine is better; when the engine is in a high-speed work condition, the moving body is moved rightwards in the volume cavity, and the second connecting pipe and the fifth connecting pipe are separated. The intake temperature control device, provided by the invention, has the advantages of reasonable design and simple structure, and is suitable for an intake heating system of the engine provided with a turbocharger.

The invention discloses a container type diesel generator set suitable for high-environment-temperature work. The set consists of a diesel engine, a generator, a public chassis, a control system, a cooling water tank, a container, a silencer and the like. The set is characterized by using the advantages of such technologies as air filter direct container external intake, generator direct container external intake and exhaust cooling and top electric multistage water tank cooling; the temperature in the container is reduced through reducing the cooling capacity in the container; the air filter and generator cooling adopts direct intake and exhaust out of the container; the water tank is directly cooled out of the container; and the high-water-temperature warning of the diesel generator set cannot be caused by high temperature in the container due to placement of the diesel generator set in the container so as to enable the diesel generator set to be incapable of operating with full power. The container type diesel generator set has the advantages of low temperature rise in the container, high reliability of the diesel generator set, low power loss and adaptation to high-environment-temperature places.

The invention relates to a distributed energy system for solving corrosion and scaling of an open type cooling system of a combustion engine and a working method. The distributed energy system comprises an air inlet pipeline, an air inlet heat exchanger, a fuel gas inlet pipeline, an internal combustion engine, an internal combustion engine generator, a gas turbine, an atomizing air cooler, an LCIcooler, a turbine lubricating oil cooler, a waste heat boiler, a steam turbine, a steam turbine generator, a smoke type lithium bromide unit, a cooling water pump, a steam type lithium bromide unit,a circulating water pump, a water supplementing tank, a medical dosing water feeding pump, a medical dosing device, a compensation heat exchanger and an electric refrigeration device. According to thesystem and the method, on one hand, the air inlet temperature of the combustion engine can be effectively reduced, the heat of a cooling water is fully utilized, the operation efficiency of the combustion engine is improved, on the other hand, the corrosion of a cooling water system can be prevented, accumulating allowance of a heat exchange area needing to be considered during design of the heatexchangers is reduced, the gradient utilization of energy is realized, the energy of the exhaust gas and the energy of the steam can be effectively utilized, and the utilization efficiency of the energy is greatly improved.

An intercooler cooling apparatus is provided. The apparatus cools an intercooler installed between a compressor of a turbocharger and an engine to adjust an oil temperature. The apparatus includes a water tank that surrounds a part of an outer side of the intercooler, in which cooling water discharged from the engine flows into a first side to exchange heat with the intercooler and the cooling water is discharged through a second side. An ATF warmer is also installed in the water tank, in which oil of a transmission is circulated.

The invention relates to an air separation unit for cryogenic separation technique, and aims to provide a device and method for lowering comprehensive power unit consumption of an air separation unit. According to the method, a waste heat recovery device is utilized to use compression heat recovered from all sets in the air separation unit to prepare chilled water, and the chilled water is utilized to cool and dehumidify inlet media of all the sets by using a heat exchanger; and meanwhile, the heat exchange quantity of the heat exchanger is adjusted by using a controller, thereby implementing control on temperature and humidity of the inlet media of all the sets, keeping the inlet media of all the sets in the optimal gas state, and achieving the goal of lowering the comprehensive power unit consumption of the air separation unit. When the invention is utilized to lower the temperature and humidity of inlet air of the compressor, the project experience shows that the temperature of inlet air of the compressor is lowered by 5%, and the power consumption of the compressor is reduced by 5%.Meanwhile, under the condition of definite compressor power, the temperature of the inlet air is lowered by 5 DEG C, and the compressed medium air quantity is increased by 1%.

The invention provides a novel jetting amount control method for a methanol-diesel engine. The novel jetting amount control method comprises the following steps that S1, the temperature in a fuel input channel of an engine air cylinder and the temperature in an exhaust gas discharging channel of the engine air cylinder are detected, the temperature in the fuel input channel serves as a first temperature value, and the temperature in the exhaust gas discharging channel serves as a second temperature value; S2, the obtained first temperature value is compared with a preset temperature upper limit value, whether the first temperature value is larger than the temperature upper limit value or not is judged, and if not, the step S1 is retuned; and S3, if yes, methanol is input into the fuel input channel, methanol and diesel mixed supplying is started, and the jetting speed of the methanol is adjusted according to the variation tendency of the first temperature value. According to the noveljetting amount control method, methanol is input to substitute diesel to burn so as to decrease the gas inlet temperature and lower a burning reaction, so that the risk that the burning temperature ofthe engine is too high is eradicated; and the jetting speed of the methanol is adjusted according to the variation tendency of the first temperature value, the gas inlet temperature is flexibly adjusted advantageously, and the power of the engine is adjusted.

The invention discloses a nitrogen and oxygen pressurizing system for improving the power performance of an engine. A cylinder 3 of the system is connected with a retaining valve 2 through a pipeline, the retaining valve 2 is connected with a throttle 1, the oil and gas mixture is inputted. The retaining valve 2 is also connected with a gas cylinder 7 through an electromagnetic valve 12, and nitrous oxide gas is inputted. The electromagnetic valve 12 is also connected in signal with an ECU 5 through a first electromagnetic relay 8. The ECU 5 is respectively connected with a temperature sensor 4 arranged on the cylinder 3, a switch electricity source 6 is respectively connected with the temperature sensor 4, the ECU 5, and a second electromagnetic relay 10. The system compulsorily compresses the nitrous oxide gas into the cylinder of the engine; the nitrous oxide gas can release oxygen under a high temperature and a high pressure, and accordingly the oil feeding volume is increased properly, the invention can realize the rising of the power of the engine, and then can provide additional strong power.

The invention relates to the field of air compressors and discloses an efficient two-stage air compressor. The efficient two-stage air compressor comprises two or three first-stage compressing main machines and a second-stage compressing main machine. If the number of the first-stage compressing main machines is three, the two first-stage compressing main machines are driven by a first-stage motor, and the other first-stage compressing main machine and the second-stage compressing main machine are driven by a variable frequency second-stage motor. When the air compressor is started, the second-stage motor is started firstly, then the first-stage motor is started when the second-stage motor operates under a low frequency, the frequency of the second-stage motor is adjusted to the working operating frequency after the first-stage motor is started, and the starting current of the air compressor is small. The two or three first-stage compressing main machines are arranged, and the maximumdisplacement of the air compressor is two or three times that of an air compressor in the prior art; and in addition, the gas displacement adjusting range of the air compressor is made wide.