166 results about "Intake pressure" patented technology

The embodiment of the invention provides an engine supercharging system and a vehicle, and relates to the technical field of vehicle manufacturing. The electronic supercharger is constructed into a two-stage supercharger, the electronic supercharger is provided with a first-stage compressed air flow channel and a second-stage compressed air flow channel, a turbine compressed air flow channel is formed in the turbocharger, and the first-stage compressed air flow channel, the second-stage compressed air flow channel and the turbine compressed air flow channel are distributed in series. And the three-stage compressed air inlets are communicated with the air inlet to form three-stage compressed air inlet to the air inlet. According to the engine supercharging system provided by the embodiment of the invention, gas can be supercharged for three times through the first-stage compressed air flow channel, the second-stage compressed air flow channel and the turbine compressed air flow channel, so that the air compression ratio can be increased, the turbine hysteresis phenomenon is avoided, the air inlet pressure response speed is increased, and transient air supply to an engine is ensured; the operation stability and combustion efficiency of the engine are guaranteed, the fuel economy of the engine is improved, and the driving experience is improved.

The present disclosure provides a vehicle leak detection apparatus with automatic intake pressure regulation, comprising: an air pump; a first pipeline configured to allow air pumped by the air pump to be pumped into a test vehicle; a smoke generation unit arranged between the air pump and the test vehicle and configured to generate visible smoke in the air pumped into the test vehicle; and a check valve removably connected to the first pipeline and configured to release air after an air pressure in the first pipeline exceeds an intake pressure that the check valve can withstand so as to automatically regulate the intake pressure during vehicle leak detection.

The application discloses a hydrogen engine crankcase hydrogen concentration control method, and relates to the field of hydrogen engines, which comprises the following steps: placing a hydrogen engine on a test bench to test, obtaining a target hydrogen concentration, an actually measured hydrogen concentration and a crankcase blow-by amount; calculating a target working condition supplementary air amount according to the target hydrogen concentration, the actually measured hydrogen concentration and the crankcase blow-by amount; generating a full working condition supplementary air amount database according to the target working condition supplementary air amount, based on the rotating speed and the load of different working conditions; obtaining the fresh air amount required to be supplemented by a current target working condition according to the full working condition supplementary air amount database; obtaining an intake air pressure, an intake air temperature and a crankcase pressure; combining the intake air pressure, the intake air temperature and the crankcase pressure to calculate a throttle opening degree; comparing the hydrogen concentration measured by a hydrogen concentration sensor according to the current target working condition with the target hydrogen concentration to obtain a hydrogen concentration deviation; generating a corrected fresh air amount; and performing closed-loop control on the actual crankcase hydrogen concentration by adjusting the throttle opening degree.

The invention discloses a control method, device and system for a diesel engine supercharger. The control method comprises the following steps that current state data of a diesel engine are obtained; according to the rotating speed of the engine and the fuel injection quantity, the current intake manifold required pressure is determined in a table look-up MAP mode; determining a correction coefficient according to the altitude; determining a demand pressure value according to the correction coefficient and the current intake manifold demand pressure; and the real-time air inlet pressure of the air inlet manifold is obtained, and the opening degree of the electronic throttle valve is controlled according to the required pressure value till the real-time air inlet pressure of the air inlet manifold is equal to the required pressure value. According to the method, the engine rotating speed, the oil injection quantity and the corresponding optimal required pressure are determined through the bench test when the real-time rotating speed of the supercharger is equal to the supercharger rotating speed limit value, the current required pressure of the intake manifold can be determined through table look-up in actual operation, and it is guaranteed that the supercharger does not overspeed; and the problem of engine power loss caused by fuel injection quantity reduction is avoided.

The invention discloses a dynamic gas supplementing method, system and equipment for a hydrogen engine and a medium, and relates to the technical field of engine control, the method comprises the steps that the current working condition and the current required gas inflow of the engine are obtained based on the current operation parameters of the engine so as to be matched with a gas supplementing gas source corresponding to the current working condition; the current actual air inflow of the engine is measured, and the difference value between the current required air inflow and the current actual air inflow is calculated; and on the basis of the difference value, the compensation gas amount is calculated through a preset flow compensation algorithm, and a gas supply gas source corresponding to the current working condition is adopted to supply gas to the engine intake manifold with the compensation gas amount. According to the method, the working condition of the engine is recognized, the corresponding air source is matched, meanwhile, the air inlet deviation can be continuously corrected through the preset flow compensation algorithm based on the difference value between the demand and the actual air inlet amount, air inlet pressure fluctuation caused by system delay or disturbance is effectively restrained, and therefore the engine is accurately controlled.

The application discloses a kind of gas engine active precombustion chamber lean combustion comprehensive system and control method, belong to gas engine technical field.The system includes main combustion gas inlet pipeline, active gas inlet pipeline, active precombustion chamber and ECU.Active gas inlet pipeline is equipped with active gas inlet electric pressure regulating valve, active gas inlet total gas metering valve, each cylinder precombustion chamber entrance is equipped with active gas inlet single cylinder gas metering valve.ECU and gas inlet manifold pressure sensor and electric pressure regulating valve form closed loop pressure regulating unit, maintain the positive pressure difference between precombustion chamber and main combustion chamber;ECU and total metering valve, single cylinder metering valve, single cylinder exhaust temperature sensor form metering control unit, realize total air intake and single cylinder air intake independent closed loop regulation.The application controls precombustion chamber air intake pressure and each cylinder gas quantity accurately, combines the intercylinder balance control based on exhaust temperature, significantly improves the stability and uniformity of multi-cylinder gas engine lean combustion, effectively improves thermal efficiency.

The utility model discloses a hydraulic station which comprises an air cylinder, a reversing trigger device capable of sending out a signal that an air cylinder piston of the air cylinder moves in place, a reversing valve for switching air intake and air exhaust of two air cylinder cavities of the air cylinder according to the signal of the reversing trigger device, and an oil cylinder linked with the air cylinder, the oil cylinder can extract hydraulic oil from the oil tank under driving of the air cylinder and supply the hydraulic oil to the executing mechanism through the first oil supply pipeline. The hydraulic oil pump extracts hydraulic oil from the oil tank and supplies the hydraulic oil to the executing mechanism through a second oil supply pipeline, and the pressure detection device is used for detecting the air inlet pressure of the reversing valve or the oil pressure of the oil outlet of the oil cylinder. The first oil supply pipeline is provided with a first one-way valve to prevent hydraulic oil in the second oil supply pipeline from entering the first oil supply pipeline. The hydraulic oil pump is started when the pressure detection device detects that the air inlet pressure or the oil pressure is reduced to a first set value. According to the hydraulic station, the hydraulic oil pump is used for supplying oil when oil supply of the oil cylinder is stopped, and therefore continuous oil supply is achieved.

The invention discloses a vehicle and a fuel gas injection control method and device of a fuel gas injection system of the vehicle. The control method comprises the steps that the operation working condition of the vehicle gas injection system is obtained in real time; the operation working conditions at least comprise the operation state and the rotating speed of the engine, the temperature of engine cooling liquid, the gas inlet pressure and the gas inlet temperature at the inlet of the gas inlet pipeline, and the gas pressure and the gas temperature at the inlet of the gas ejector; the mass of pre-injected fuel gas is determined according to the current operation working condition of the vehicle fuel gas injection system; the opening degree and the opening time of a gas injector are determined, and the gas injector is controlled to conduct gas pre-injection according to the opening degree and the opening time; after fuel gas pre-injection is finished, according to the current operation working condition, the reinjection fuel gas quality is determined; and the opening degree of the fuel gas injector is determined, and the fuel gas injector is controlled to conduct fuel gas supplementary injection according to the opening degree until it is determined that the current operation state is in the timing synchronization state. The starting speed and the starting stability of the engine are improved.

The application relates to a supercharger control method, system, device, computer equipment and computer readable storage medium. The method comprises the following steps: obtaining the intake pressure of an engine; determining whether the size of the intake pressure in a set time period meets a first preset condition; determining whether the rising speed of the intake pressure in the set time period meets a second preset condition; in the case that the size of the intake pressure in the set time period meets the first preset condition and the rising speed of the intake pressure in the set time period meets the second preset condition, controlling the opening degree of the nozzle of the supercharger to be a first opening degree. The method can predict whether the engine will have a safety problem according to the trend of the intake pressure of the engine, so that the opening degree of the nozzle of the supercharger is controlled in advance, the maximum intake pressure of the engine is limited below a set pressure, the safety of the engine is ensured, and the risk of engine over-regulating explosion pressure is eliminated.

This invention discloses a device and control method for maintaining uniform pressure and temperature in the engine intake chamber. The device includes a circulation pipe, with its two ends fixedly connected to the flywheel end and free end of the intake chamber, respectively. The intake passages of the first and last cylinders are connected to the intake chamber. Temperature and pressure detection devices are installed on both the first and last cylinder intake passages. A regulating valve is installed on the circulation pipe to adjust the flow rate of the boosted intercooled air in the circulation pipe. The detection devices are connected to the ECU, and the regulating valve is controlled by the ECU. The regulating valve is configured as an electronic throttle. The ECU monitors the intake pressure and temperature signals of each cylinder in real time, obtains a preset electronic throttle opening angle based on the temperature and pressure differences, and controls the opening angle of the electronic throttle according to the preset angle. This precisely controls and adjusts the flow rate of the boosted intercooled air in the circulation pipe, ensuring uniform intake pressure and temperature in each cylinder, improving engine knock pressure uniformity, exhaust temperature uniformity, and reducing vibration.

The application provides a method, device, storage medium and electronic equipment for maintaining an air filter. The method comprises: obtaining an air intake pressure of the air filter, wherein the air intake pressure is obtained by a pressure sensor installed at an air intake port of the air filter; determining an oil consumption degradation coefficient corresponding to the air filter according to the air intake pressure, wherein the oil consumption degradation coefficient reflects a difference between an actual oil consumption and a theoretical oil consumption; determining an oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption, and determining an oil consumption degradation cost according to the oil consumption degradation amount; and generating a prompt information in a case where the oil consumption degradation cost is higher than a maintenance cost of the air filter, wherein the prompt information is used to prompt a user to maintain the air filter in time. The present scheme realizes timely maintenance of the air filter.

The invention belongs to the technical field of coal bed gas treatment. According to the coal bed gas compressor control system, the control method and the coal bed gas dust removal and pressurization system, it is guaranteed that a compressor unit can operate safely, efficiently and stably, and the whole coal bed dust removal, compression and dehydration system operates stably. According to the technical scheme, the coal bed gas compressor control system comprises a compressor, an electric control pneumatic switch ball valve and an air inlet pressure sensor are sequentially arranged on an air inlet pipeline of the compressor, an exhaust pressure sensor is arranged on an air outlet pipeline of the compressor, and a backflow adjusting valve, a backflow switch valve and a backflow manual valve are arranged on a backflow pipeline in parallel. In addition, structures for sewage discharge pressure detection, high-level oil tank automatic oil supplement, cooling water amount automatic control and the like are additionally arranged, a control system and a control method of the compressor are perfected, the operation fault condition of the compressor unit can be found in time, an alarm is given out, and it is guaranteed that the compressor unit can operate safely, efficiently and stably.

This invention discloses a flow diversion device and a helicopter that enhances helicopter performance by utilizing the coupling of internal and external flow fields. The flow diversion device includes a sliding support frame, a grooved stabilizing wing assembly, and a helical crossflow fan. The sliding support frame is disposed within the helicopter's fuselage and is slidably extendable to drive the grooved stabilizing wing assembly and the helical crossflow fan to extend through the mounting port and approach the air intake. The upper end of the grooved stabilizing wing assembly is recessed to form a mounting groove. The helical crossflow fan is rotatably mounted within the mounting groove and rotates under the action of the rotor downwash generated during helicopter rotor rotation. This rotation draws the rotor downwash and forward or side-flight turbulence into the mounting groove to form an accelerated airflow, which is then accelerated and discharged from the mounting groove before entering the air intake. This flow diversion device increases the intake volume and pressure of the engine, reduces most of the engine power loss caused by the coupling of internal and external flow fields, and improves engine output power.

The utility model discloses an annealing device for motor stator silicon steel sheet production, including annealing furnace body, the back surface fixed mounting of annealing furnace body has the nitrogen cylinder, the gas -out end fixed communication of nitrogen cylinder has the intake pipe, the one end of intake pipe is away from nitrogen cylinder and extends to the inside of annealing furnace body and is passed through annealing furnace body. The device can extract the gas in the annealing furnace body through the setting of high temperature -resistant centrifugal fan, and the cooperation with the air extraction pipe and the exhaust pipe, and then can send the gas back to the annealing furnace body, realize the circulation flow of the gas in the annealing furnace body, ensure that the silicon steel sheet is heated evenly, utilize the setting of nitrogen cylinder, and the cooperation of intake pipe, pressure valve and rotor flowmeter, so that nitrogen can enter the annealing furnace body, and the intake pressure is adjusted and the intake flow is monitored, the air in the annealing furnace body is replaced by nitrogen, the annealing environment without oxygen is formed, and the oxidation condition of silicon steel sheet is prevented.

The present application relates to the technical field of engine control, in particular to a judgment optimization method and device for residual exhaust gas causing gasoline engine idle speed jitter. Idle speed jitter information is collected and it is judged whether it meets the condition of gasoline engine idle speed jitter caused by combustion instability, if yes, it is judged whether the idle speed jitter is caused by residual exhaust gas according to the gasoline in-cylinder pressure characteristic curve and the maximum peak angle of explosion pressure, if yes, debugging is carried out by increasing the intake pressure of gasoline engine and synchronously retarding the ignition angle, and the optimization process is realized. The present application discriminates the type of idle speed jitter caused by combustion instability, analyzes the cylinder pressure characteristic curve, if the cylinder combustion speed of a gasoline cylinder presents the alternating phenomenon of "low-high-low-high", it can be judged that the residual exhaust gas amount is the key factor affecting the jitter, based on which debugging can be carried out by increasing the intake pressure and synchronously retarding the ignition angle, the judgment optimization method is simple, and the period of consumption is short.

The utility model belongs to the fuel cell air compressor test field, and especially relates to a controllable humidity hydrogen fuel cell system single-stage air compressor test bench comprising an air filter used for inputting air; the first-stage temperature and humidity control box realizes temperature and humidity control based on electric heating and water spraying and is connected to the air filter; the second-stage temperature and humidity control box realizes temperature and humidity control based on a mold temperature controller and water spraying and is connected to the first-stage temperature and humidity control box; the air inlet pressure control valve is connected to the second-stage temperature and humidity control box; the air flow meter is connected to the air inlet pressure control valve; the single-stage air compressor is connected to the air flow meter; the first intercooler is connected to the single-stage air compressor; the dehumidification control box achieves dehumidification based on cooling of the mold temperature controller and is connected with the first intercooler. The exhaust control valve is connected to the dehumidification control box; a muffler connected to the exhaust control valve; and the inversion module is electrically connected to the single-stage air compressor, so that a humidity-controllable hydrogen fuel cell system single-stage air compressor test scheme is realized.

An engine system includes: an engine including a piston, cylinder, intake valve, and exhaust valve; an intake manifold introducing intake air into the engine; an intake pressure sensor detecting intake pressure; and a control device including a processor(s) and a memory(ies). A first threshold, based on the intake pressure at a first timing during rapid warm-up in the engine's initial state, is prepared. The first timing is within one cycle of the engine, after an intake valve opening timing, and before the piston reaches a bottom dead center. The processor(s) execute a process including: obtaining intake pressure at the first timing during warm-up in the engine's current state; determining whether the intake pressure is less than the first threshold; and when the intake pressure is less than the first threshold, advancing a fuel injection timing according to a pressure difference between the first threshold and the intake pressure.

The invention discloses a gas compressor high-altitude environment test adjusting device and a surge relief control method, and the device and the method are composed of a power drive system, a test gas compressor, an environment simulation cabin, an intake and exhaust pressure adjusting device, an intake and exhaust communication pipeline, an upper computer and the like. A working point is smoothly adjusted along an equal-rotating-speed characteristic line under the high-altitude simulation condition, and the air inlet pressure is kept basically constant; in combination with multi-algorithm surge automatic judgment based on static pressure pulsation, opening coupling adjustment of a rapid surge relieving valve and an intake and exhaust pressure auxiliary adjusting valve, and intake and exhaust self-circulation instability protection under an air exhaust fault working condition, the gas compressor can rapidly and stably retreat from a surge area when approaching or entering a surge and air exhaust system abnormally; axial force violent change and exhaust side overpressure are avoided, data reliability and operation safety of the high-altitude environment gas compressor test are remarkably improved, and good engineering application value is achieved.

This invention provides an intelligent pressure regulating valve for a marine LNG supply system, relating to the field of marine propulsion system technology. The intelligent pressure regulating valve includes a valve body assembly, a sensor assembly, and an embedded control unit. The valve body assembly includes an actuator, a valve body, a valve seat, a valve core, and a valve stem. The valve body has an inlet flow channel and an outlet flow channel, with sensor interfaces located on the walls of both channels. The actuator, through valve stem transmission, changes the relative position of the valve core and valve seat, controlling the valve core opening. The sensor assembly includes an inlet pressure sensor, an outlet pressure sensor, a temperature sensor, and a flow sensor, monitoring the inlet pressure, outlet pressure, inlet temperature, and outlet flow rate, respectively. This invention directly integrates the sensors onto the valve body, eliminating the risk of pipeline breakage and leakage due to ship vibration, ensuring convenient and universal sensor maintenance, and achieving real-time valve control and fault diagnosis based on the built-in control and monitoring system.

The invention provides a fuel injection quantity control method and device, a storage medium and electronic equipment. Vehicle operation information and a correction value of the fuel injection quantity of a fuel injector are obtained, and the vehicle operation information comprises the environment temperature, the environment pressure and the air inlet pressure; the correction value of the fuel injection quantity comprises a correction value of the fuel injection quantity in a first temperature range, a correction value of the fuel injection quantity in a second temperature range and a correction value of the fuel injection quantity in a first altitude range; under the condition that the air inlet pressure is larger than the air inlet pressure target value, if the air inlet pressure is larger than the air inlet pressure threshold value, the oil injection quantity of an oil injector is reduced to be within the preset range matched with the engine design power; and if the air inlet pressure is smaller than or equal to the air inlet pressure threshold value, the oil injection amount is adjusted to be within the corresponding range based on the environment pressure and the environment temperature, and the corresponding range is determined based on the corrected value of the oil injection amount. According to the scheme, the problem that it is difficult to guarantee that the engine power is within the design boundary range through the control strategy of the fuel injector fuel injection quantity is solved.

This invention provides a high-precision thrust testing device for solid rocket motor gas valves, comprising: a test bench, a swinging device, an air intake device, and a positioning device. The swinging device is fixed on a horizontally placed test bench, and the air intake device is mounted on the swinging device, which can swing at a certain angle in a vertical plane under the drive of the swinging device. The positioning device is used for positioning the gas valve and measuring the thrust, ensuring that the axis of the gas valve is perpendicular to the test bench. Gas enters the gas valve from the air intake device, and a pressure measuring device is installed on the air intake device to measure the intake pressure of the gas valve. This high-precision thrust testing device solves the problems of low accuracy, complex structure, and poor anti-disturbance performance of existing thrust testing devices.

The invention, which relates to the technical field of the temperature and pressure sensor, discloses a high-response corrosion-resistant temperature and pressure sensor comprising a main housing, a circuit board installed in the main housing, and a pressure sensor and a temperature sensor electrically connected with the circuit board. The pressure measuring cylinder is fixed and communicated with the main shell and is used for guiding the air inlet pressure to the pressure sensor; the temperature measuring cylinder is fixed with the pressure measuring cylinder, and a temperature sensing chamber for accommodating the temperature sensor is formed in the temperature measuring cylinder; wherein the temperature measuring cylinder comprises an air inlet cylinder, an exhaust hole and a cyclone separation structure, the cyclone separation structure is arranged between the air inlet cylinder and the temperature sensing chamber, and the cyclone separation structure is configured to perform centrifugal separation on pollutants in air flow before the air flow enters the temperature sensing chamber, so that the accuracy of temperature and pressure detection is ensured.

The invention relates to the technical field of automobile air conditioner pipeline adjustment, and discloses an adjustable automobile air conditioner pipeline structure which comprises an adjusting assembly, a fixing assembly and an automobile air conditioner pipeline body, and the adjusting assembly comprises an adjusting box arranged on the automobile air conditioner pipeline body; the limiting plate is fixedly mounted on the lower surface of the adjusting box; when the rotating shaft moves upwards through the supporting frame and the linkage plate, the sealing plate is driven to move upwards, so that the sealing plate can only rotate on one side, the distance between the sealing plate and the limiting plate is adjusted, the air inlet amount of the automobile air conditioner pipeline body is adjusted, a user can adjust the air inlet amount according to the requirement of the user, and the practicability of the automobile air conditioner pipeline body is improved. Meanwhile, through the arrangement of the first air inlet pressure sensor, the air inlet throughput can be detected and tested and can be fed back to a user through the display unit, and the user can conveniently carry out corresponding adjustment according to the air inlet amount.

The invention provides a novel gas field gathering and transportation pressurization system and method, and relates to the technical field of oil and gas field development, the novel gas field gathering and transportation pressurization system comprises an ejector, a gas wave device and a compressor, and the ejector and the high-pressure inlet end of the gas wave device are connected with a high-pressure gas pipeline; the ejector and the low-pressure inlet end of the gas wave device are connected with a low-pressure gas pipeline; the ejector and the medium-pressure outlet end of the gas wave device are connected with a medium-pressure gas pipeline; the output end of the medium-pressure gas pipeline is connected with the compressor. Through cooperative operation of the ejector, the gas wave device and the compressor, the application range of supercharging equipment is expanded, high-pressure gas energy is fully utilized, efficient gathering and transportation supercharging of a gas field multi-pressure system is achieved, the gas inlet pressure of the concentrated compressor is improved, compression energy consumption is reduced, and reference is provided for ground gathering and transportation of the gas field.

A system (400), method, and computer program product are disclosed for indirectly measuring a volumetric flow rate (453) generated by a compressor (110) in an environment with known intake pressure. The compressor is connected with a measurement volume which extends to a closing check valve in the downstream of the compressor. The check valve is adapted to separate the compressor from the piping system supplying the consumer. The pressure sensor is located between the compressor and the check valve. An activation module (410) sends an activation instruction (I1) to the pressure sensor for capturing a time series of pressure values (p) and corresponding timestamps (t) at a sampling rate set to capture three to one hundred pressure values during the time required for the compressor to pump the measurement volume to the operating working pressure at which the check valve is open. Once the compressor is activated, the system stores the captured pressure value and its timestamp in memory (420). A regression module (430) calculates a slope (433) of a linear regression line of pressure values captured during a regression time window between a point in time of activation of the compressor and a point in time at which the compressor reaches the operating working pressure. A volume flow (453) generated by the compressor is calculated by multiplying the slope (433) by a scaling factor defined as a ratio of the measured volume to the intake pressure.

The invention discloses an anti-surge engine control method and device. The anti-surge engine control method comprises the steps that an air inlet pressure value, an air inlet temperature, an atmospheric pressure value and an engine torque are periodically obtained; and the actual supercharger pressure ratio and the first reduced flow of the engine are determined based on the air inlet pressure value, the air inlet temperature and the atmospheric pressure value of the current period, and the first surge boundary pressure ratio is determined according to the first reduced flow based on the corresponding relation between the reduced flow and the surge boundary pressure ratio. And determining the torque change rate of the current period based on the engine torque of the current period and the engine torque of the previous period. And if the difference value between the first surge boundary pressure ratio and the actual supercharger pressure ratio is smaller than a first threshold value, or the torque change rate of the current period and the torque change rates of the first N periods are negative values and the absolute values are larger than a second threshold value, an opening instruction of the anti-surge valve is triggered so as to open the anti-surge valve, rapid and accurate control over the anti-surge valve is achieved, and the anti-surge effect is improved. And therefore, surge is effectively prevented in a full working condition range.

The present invention addresses the problem of reducing the hydrogen concentration in a crankcase. An internal combustion engine includes a throttle valve, a supercharger, and a blow-by gas treatment mechanism. The blow-by gas treatment mechanism is provided with: a first communication passage that communicates with a crankcase and a portion of the intake passage upstream of a compressor impeller of the supercharger; a third communication passage that communicates a portion of the intake passage downstream of the throttle valve with the crankcase; and a second PCV valve that is provided in the third communication passage and that opens when an intake pressure, which is a pressure downstream of the throttle valve in the intake passage, is higher than a pressure in the crankcase. When the state in which the intake pressure is within the prescribed range continues for a prescribed time or longer, the control device executes a ventilation process for increasing the supercharging pressure of the supercharger.

The invention discloses a gas pressure adjusting device for an engine, an engine system and a vehicle, and relates to the technical field of vehicles, the engine is provided with a gas outlet and a gas inlet, the gas pressure adjusting device comprises a gas inlet pipeline, an electric control turbocharger and a mechanical supercharger, the electric control turbocharger is provided with a supercharger turbine and a supercharger compressor, and the mechanical supercharger is provided with a gas inlet and a gas outlet. The supercharger compressor is communicated with the air inlet pipeline, the mechanical supercharger is communicated with the supercharger compressor, the mechanical supercharger is used for being communicated with the air inlet, a first exhaust port of the supercharger compressor is selectively communicated with the air inlet pipeline, and / or a second exhaust port of the mechanical supercharger is selectively communicated with the air inlet pipeline. According to the gas pressure adjusting device, the effect that the gas pressure adjusting device can provide sufficient air with the appropriate air inlet pressure for the engine under different working conditions of the engine is achieved, fuel oil in the engine can be sufficiently combusted, and the output power of the engine can be improved.

The application discloses a control method of an electrically-controlled supercharger exhaust bypass valve, which comprises the following steps: S1, presetting a control value of an open-loop value of the bypass valve according to each working condition of an engine in an ECU; S2, issuing an opening degree instruction of the control valve of the supercharger by the ECU according to the working condition of the engine, and pressurizing one side of the control valve through an external air source; S3, when the supercharging value reaches a limited preset value, the intake pressure drives a valve rod of the bypass valve on the other side of the control valve to act, so that the bypass valve is at a preset opening degree, which is used for adjusting the bypass amount of the exhaust gas of the supercharger and further adjusting the exhaust temperature after the turbine; and S4, calculating a closed-loop value of the bypass valve according to the deviation of the exhaust temperature after the turbine, and using the closed-loop value of the bypass valve to correct the control value of the open-loop value of the bypass valve under each working condition of the engine in real time, and finally confirming the actual opening degree of the bypass valve. Therefore, the control strategy based on different running intervals and different running environments makes the engine in an ideal running state.

This invention relates to the field of generator set technology, specifically a compact, high-altitude ultra-quiet generator set, including a high-altitude intelligent power compensation system comprising an intake pressure sensor and an electronic control unit (ECU). The ECU is configured to dynamically adjust the turbocharger's boost ratio based on the intake pressure. A compact anti-condensation chassis integrates the engine block, generator block, turbocharger intercooler, and radiator on its top, with the turbocharger intercooler mounted on top of the radiator. A multi-dimensional composite noise reduction and heat dissipation synergistic structure includes a housing frame and dual independent air ducts within the housing frame. This invention provides a compact, high-altitude ultra-quiet generator set with the advantages of automatically adapting to the complex high-altitude environment and synergistically resolving multiple contradictions such as ultra-low noise, efficient heat dissipation, anti-condensation, and power compensation within an extremely compact space.