309 results about "Rail pressure" patented technology

The invention discloses a high-pressure oil pump fault early warning method, system and device, and relates to the technical field of marine diesel engine fault diagnosis. The early warning method comprises the steps of obtaining sample data of a high-pressure oil pump in response to a stable-pressure working condition of the high-pressure oil pump; the sample data comprises the front end temperature and the rail pressure of the high-pressure oil pump; inputting the sample data into a pre-trained early warning model to obtain detection parameters; and generating early warning information in response to the fact that the detection parameter is greater than the first threshold. Therefore, by monitoring the front-end temperature and the rail pressure of the high-pressure oil pump and inputting the data into the pre-trained early warning model, online fault early warning of the high-pressure oil pump can be achieved, potential fault conditions can be found early, further deterioration of the faults is avoided, the downtime and the maintenance cost are reduced, and the reliability and the stability of the diesel engine are improved. And secondly, by generating the detection parameter and the first threshold value, when the detection parameter exceeds the first threshold value, the early warning information is generated, so that the accuracy of fault detection is improved, and the situations of false alarm and missing alarm are reduced.

The present invention specifically relates to a correction control method for calculating the fuel injection amount at different altitudes of a port injection engine, a pressure correction control method for optimizing the fuel injection amount under different environmental pressures, a correction curve of the intake manifold pressure and the oil rail pressure difference is creatively introduced in the model calculation, and the correction value at different altitudes and different intake manifold pressures is accurately calibrated to ensure that the air-fuel ratio can be controlled at a theoretical optimal level at different altitudes. The present invention is based on a large amount of road test data, including measurements at different ambient temperatures and different altitudes. Through big data statistical cluster analysis, it is found that the key factor affecting the accurate calculation of the fuel amount of the port injection engine is the pressure difference between the oil rail pressure and the intake manifold. Through this method, on the one hand, the fuel economy at high altitudes can be reduced, while ensuring high power output in plateau environments.

The invention relates to the technical field of diesel engine power control, in particular to a control method for reducing plateau power loss of a supercharged diesel engine through EGR. The working condition point of current operation is obtained through the engine rotating speed sensor and the accelerator position sensor, the electronic control unit corrects the main injection advance angle and the rail pressure according to the current altitude, and then the opening degree of the EGR valve is calculated and controlled according to the air amount demand value and the actual air inflow measured by the PFM air flow meter. When the altitude simulation test bench performs external characteristic tests under various altitudes, the main injection advance angle, the rail pressure and the air quantity demand quantity of the diesel engine are continuously debugged by combining the rotating speed of a diesel engine supercharger, the vortex front exhaust temperature and the smoke intensity value tested by the bench, and finally the EGR opening degree value and the external characteristic oil quantity value under the altitude condition are determined. And obtaining the maximum plateau power result under the altitude condition.

Disclosed is n engine system 2 for a vehicle, the engine system comprising a fuel injector 26 for delivering fuel directly into an associated engine cylinder 12, the associated cylinder having a cylin

Disclosed is an engine system for a vehicle, comprising a rail volume 28 for receiving gaseous fuel; a shut off valve 38 for controlling the supply of fuel to the rail volume ; an injector assembly in

The invention discloses a high-pressure common rail system oil injection rule self-adaptive observation method considering structure degradation, and belongs to the technical field of engine fuel system control, and the method considers the influence of oil injector structure degradation on model parameters on the basis of an oil injection process dynamic model, and adds degradation factors into the model. Then selecting a state variable, and constructing a state space model containing two outputs of rail pressure and a degradation factor; on the basis of a sequential extended Kalman filtering algorithm, a double-time-scale and double-output high-pressure common rail system oil injection estimator is designed, self-adaptive iterative correction is conducted on model parameters through measured rail pressure and recognized degradation factors, and real-time accurate estimation of the oil injection rule under the structure degradation condition is achieved. And meanwhile, the calculation real-time performance of an actual application process is also improved.

The application discloses a fuel injection control method and device, electronic equipment and storage medium. The fuel injection control method comprises the following steps: after the accelerator pedal is stepped on, determining the engine torque demand according to the current working state of the engine and the stepping amount of the accelerator pedal, and determining the required intake air amount and the required fuel amount of the engine according to the engine torque demand; determining the current throttle opening of the engine according to the required intake air amount, and after the current fuel injection pulse width of the fuel injector is determined according to the required fuel amount, controlling the throttle valve to hit the target position corresponding to the current throttle opening, and controlling the fuel injector to open to the current fuel injection pulse width; acquiring the current fuel injection rail pressure, and determining the fuel injection mass flow of the engine by querying the fuel injection mass flow calculation MAP according to the current fuel injection pulse width and the current fuel injection rail pressure; and inputting the fuel injection mass flow into the engine model to output the current air-fuel ratio. The application realizes real-time adjustment of the fuel injection mass flow.

The invention relates to the field of oil pumps, in particular to a centralized high-pressure common rail system. The common rail system comprises a PVC valve, a right cross rail connecting pipe, a left cross rail connecting pipe, a right high-pressure common rail, a left high-pressure common rail, a high-pressure oil pipe A, a high-pressure oil pipe B, a high-pressure oil pipe C, a safety valve and a rail pressure sensor, one side of the PVC valve is communicated with the right high-pressure common rail through the right cross rail connecting pipe, and the other side of the PVC valve is communicated with the left high-pressure common rail through the left cross rail connecting pipe. And a rail pressure sensor is mounted at the end of the right high-pressure common rail. The left high-pressure common rail and the right high-pressure common rail are connected at the rear end of the diesel engine, and it is guaranteed that oil pressure in oil cavities of the left high-pressure common rail and the right high-pressure common rail tends to be consistent; the high-pressure common rail is of a double-layer pipe structure, and the high-pressure oil pipe and the high-pressure common rail are connected and sealed through a ball head. The high-pressure common rail inner pipe is an integral steel pipe, and the high-pressure common rail outer pipe is a sectional steel pipe, so that the high-pressure common rail has better safety and leakproofness.

The utility model relates to the field of oil pumps, in particular to a centralized high-pressure common rail system. The common rail system comprises a PVC valve, a right cross rail connecting pipe, a left cross rail connecting pipe, a right high-pressure common rail, a left high-pressure common rail, a high-pressure oil pipe A, a high-pressure oil pipe B, a high-pressure oil pipe C, a safety valve and a rail pressure sensor, one side of the PVC valve is communicated with the right high-pressure common rail through the right cross rail connecting pipe, and the other side of the PVC valve is communicated with the left high-pressure common rail through the left cross rail connecting pipe. And a rail pressure sensor is mounted at the end of the right high-pressure common rail. The left high-pressure common rail and the right high-pressure common rail are connected at the rear end of the diesel engine through the left high-pressure common rail and the right high-pressure common rail, so that oil pressure in oil cavities of the left high-pressure common rail and the right high-pressure common rail tends to be consistent; the high-pressure common rail is of a double-layer pipe structure, and the high-pressure oil pipe and the high-pressure common rail are connected and sealed through a ball head. The high-pressure common rail inner pipe is an integral steel pipe, and the high-pressure common rail outer pipe is a sectional steel pipe, so that the high-pressure common rail has better safety and leakproofness.

The invention discloses a hydrostatic guideway, a hydrostatic oil cavity pressure regulating method and a machine tool, the hydrostatic guideway comprises a guideway assembly, a sliding assembly and an oil supply assembly, and the guideway assembly comprises a first guideway and a second guideway; the sliding assembly comprises a sliding seat, a first limiting part and a second limiting part, the first limiting part and the second limiting part are installed on the two opposite sides of the sliding seat respectively in the first direction, sliding grooves are defined by the first limiting part and the second limiting part and the sliding seat, and the first guide rail and the second guide rail are arranged in one-to-one correspondence with the sliding grooves respectively and slidably arranged in the sliding grooves in a sleeved mode; a first static pressure oil cavity is formed between one of the first guide rail and the second guide rail and the side walls of the two opposite sides of the sliding groove in the first direction. In the second direction, second static pressure oil cavities are formed between the first guide rail and the second guide rail and the inner wall faces of the two opposite sides of the sliding groove. The hydrostatic guideway at least can solve the problem that the design scheme of the hydrostatic guideway in the prior art easily causes the reduction and even disappearance of the pressure of the vertical hydrostatic guideway.

The invention provides a vehicle control method and device, electronic equipment and a vehicle, and is applied to the technical field of vehicle intelligent control. The method comprises the steps that in response to a received starting instruction of an engine, the rail pressure of a fuel injection metering valve, fuel supply data and the rotating speed of the engine are obtained; whether a fuel injection metering valve is blocked or not is determined according to the rail pressure and the fuel supply data; executing a self-cleaning strategy of the oil injection metering valve in response to determining that the oil injection metering valve is stuck and the rotating speed of the engine is smaller than or equal to the preset rotating speed; according to the self-cleaning strategy of the oil injection metering valve, the working frequency of a valve element of the oil injection metering valve is reduced, and the movement amplitude of the valve element is increased. The clamping stagnation risk caused by fuel oil impurities is reduced, meanwhile, abrasion caused by long-time low-frequency long-stroke work of the oil injection metering valve is effectively avoided, and the service life of the oil injection metering valve is prolonged.

The utility model discloses a rail damage detection experiment system based on a vehicle-mounted acoustic emission technology, and belongs to the technical field of vehicle-mounted acoustic emission detection experiments. And the track load condition of the train passing through the track can be simulated. Comprising a steel rail base, an operation support and a rolling wheel set. The steel rail base provides necessary mechanical support for the whole system, the steel rail on the steel rail base can prefabricate various damages, richer experimental data are provided, the running support is matched with the steel rail base to guide the rolling wheels to roll on the steel rail, and the pressure between wheel rails is adjusted through an external hydraulic machine, so that the steel rail base can be used for prefabricating various damages. A wheel rail state during real train operation is simulated, a rolling wheel set rolls on a steel rail to generate an acoustic emission phenomenon, an acoustic emission signal acquired by an acoustic emission sensor is transmitted to an acoustic emission acquisition system through a conductive slip ring, a rolling state of a roller is recorded through a rotary encoder, and necessary priori knowledge is provided for a vehicle-mounted acoustic emission experiment. And stable and reliable experimental research of the vehicle-mounted acoustic emission technology in a laboratory environment is realized.

The utility model relates to the technical field of harbor machinery trolley tracks, in particular to an anti-falling device for a track pressing plate. The anti-falling device comprises a rail bearing beam, a trolley track is installed above the rail bearing beam through a base plate, a plurality of anti-falling devices are symmetrically arranged on the two sides of the trolley track, each anti-falling device comprises a soft pressing plate bottom plate, a soft pressing plate upper pressing plate is installed above the soft pressing plate bottom plate through two sets of bolts and self-locking nuts, one end of the soft pressing plate upper pressing plate is arranged above the trolley track, and the other end of the soft pressing plate upper pressing plate is arranged above the trolley track. A nut cover cap is arranged above the self-locking nut, and anti-loosening assemblies are arranged on the soft pressing plate bottom plate, the soft pressing plate upper pressing plate and the nut cover cap; according to the device, the tightening steel wire and the rope penetrating rings are arranged, the soft pressing plate bottom plate, the soft pressing plate upper pressing plate and the nut cover are connected into a whole, so that the angle of the self-locking nut is fixed, loosening is prevented, meanwhile, the tightening steel wire connects a plurality of components, and even if part of the components are deformed and loosened in long-term use, the components cannot fall off.

The invention discloses a rail pressure stability control method for a marine large common rail diesel engine, which is characterized in that a low-pressure oil pump mainly pumps diesel oil from an oil tank, a high-pressure oil pump converts low-pressure diesel oil into high-pressure diesel oil and stores the high-pressure diesel oil in a rail pipe, and a controller collects rail cavity pressure in the rail pipe through a pressure sensor. The pressure of a rail cavity is stabilized by controlling a proportional valve on the high-pressure oil pump, an on-board oil injector and an off-board oil injector, and a pressure relief valve relieves the pressure when the pressure of the rail cavity is ultrahigh, so that the safety of the whole system is ensured. The invention further provides a rail pressure stability control method of the marine large common rail diesel engine under the working conditions of sudden power discharge, non-dead closing of an oil pump proportional valve and stormy waves.

The invention discloses a gas engine cold start difficulty diagnosis method, system and device and a readable storage medium, and relates to the field of cold start fault detection, and the method specifically comprises the steps: determining an initial idle speed segment based on a real-time vehicle speed, a real-time engine rotation speed, a neutral gear signal and a clutch signal when the lowest environment temperature is detected to be smaller than a preset environment temperature threshold value; the initial idling segment is a working state when the vehicle is static and an engine is in an idling mode; in the initial idle speed segment, based on the maximum value of the engine rotating speed, the real-time engine rotating speed, the real-time gas rail pressure, the real-time gas rail temperature, the engine water temperature at the starting point of the initial idle speed segment, the real-time accelerator opening degree and the fault code, the cold start difficulty result of the gas engine is determined; the fault code is a corresponding fault code when the pressure of the intake manifold is smaller than a preset pressure threshold value of the intake manifold. According to the invention, specific faults of cold start difficulty can be identified efficiently and accurately.

The invention relates to a hydrogen internal combustion engine rail pressure fluctuation control method and device, a storage medium and an injection system. The control method comprises the steps that the current working condition is obtained, and the preset rail pressure and the preset fuel injection quantity are obtained according to the working condition; acquiring current rail pressure data and cylinder pressure data; according to the rail pressure data and the cylinder pressure data, the current injection flow is calculated; according to the injection flow and the current preset oil injection quantity, the current cylinder fluctuation coefficient is calculated; and when the cylinder fluctuation coefficient exceeds a preset threshold value, the current rail pressure adjustment amount is calculated according to the current preset rail pressure, and the rail pressure of all the air cylinders is adjusted according to the rail pressure adjustment amount. Compared with the prior art, the method has the advantages that injection fluctuation and multi-cylinder interference are reduced, and the combustion stability, efficiency and emission performance of the hydrogen internal combustion engine are improved.

The embodiment of the invention relates to the field of vehicle control, in particular to an engine rail pressure control method, device and equipment and a storage medium, and aims at achieving accurate pre-control over the engine rail pressure. The method comprises the following steps: mounting an engine on a test bench; the engine is tested and calibrated through the test bench, and a slope three-dimensional diagram and an intercept diagram of the engine under each set of rotating speed and rail pressure are obtained; and according to the slope three-dimensional diagram and the intercept diagram, the corresponding relation between the relative oil injection quantity and the oil pumping continuous angle under each set of rotating speed and rail pressure is determined so as to control normal operation of the engine.

The present invention discloses a micro-leakage device and a common rail pipe, wherein the micro-leakage device comprises a valve seat, a valve seat oil passage is arranged in the valve seat, an oil inlet and an oil return port connected to the valve seat oil passage are arranged in the valve seat, a valve core and a first limiting structure are arranged in the valve seat, the valve core and the valve seat clearance are matched, the clearance between the valve core and the valve seat are respectively connected to the oil inlet and the oil return port, the two ends of the valve core are respectively the first end of the valve core and the second end of the valve core, along the fuel flow direction, the first end of the valve core is located upstream of the second end of the valve core, and the second end of the valve core abuts against the first limiting structure. The present invention adds a micro-leakage device to the common rail pipe, when the rail pressure is too high, it leaks out through the micro-leakage device, and the excessive rail pressure is unloaded, so that the actual rail pressure of the engine has good followability with the set rail pressure, and solves the problem of poor followability of rail pressure of micro-leakage injectors.

A process of operating an internal combustion engine system includes operating a fuel injector in fluid communication with a fuel rail to inject multiple pulses of fuel per a combustion stroke, determining a measured dynamic fuel pressure indicative of variation in fuel pressure of the rail during one of the multiple pulses, determining an adaptation of a modeled dynamic rail pressure to the measured dynamic fuel pressure, determining a modified injection control parameter in response to the adaptation, and at least one of controlling and diagnosing the internal combustion engine system in response to the modified injection control parameter.

The utility model discloses an oil rail pressure control valve, which relates to the technical field of valves, and comprises a static iron core with one end provided with a mounting cavity and the other end provided with an insertion cavity; the ejector pin is coaxially inserted into the static iron core, and the two ends of the ejector pin are inserted into the mounting cavity and the insertion cavity respectively; one end of the valve seat is inserted into the insertion cavity, and a flow channel matched with the ejector pin is formed in the valve seat; the flange is positioned in the mounting cavity, and a gap is formed between the flange and the corresponding end of the ejector pin; the movable iron core is positioned in the mounting cavity and is fixedly connected with the corresponding end of the ejector pin; the driving coil unit is positioned in the mounting cavity and is used for driving the movable iron core to move away from the moving direction of the runner; and the spring is sleeved at the corresponding end of the ejector pin, and two ends of the spring are respectively propped against the outer side of the movable iron core and the inner side of the flange. The utility model has the effects of stable matching and effective sealing and pressure control.

The invention discloses a pulse testing device for an electromagnet, and the device comprises an oil inlet plate which is internally provided with a three-way oil channel; the oil inlet joint is mounted on the oil inlet plate; an oil duct in the oil inlet joint is communicated with a first end of the three-way oil duct; the rail pressure sensor is mounted on the oil inlet plate; an oil duct in the rail pressure sensor is communicated with a second end in the three-way oil duct; an electromagnet; the electromagnetic valve further comprises a sealing base plate, the electromagnet is installed on the electromagnetic valve installation face in the oil inlet plate through a fastener and presses the sealing base plate on the electromagnetic valve installation face in the oil inlet plate, an oil cavity is formed in the sealing base plate, and the oil cavity is communicated with the third end in the three-way oil way. The liquid medium can carry out pulse testing on the electromagnet in the oil cavity through different pressures. The device is simple and compact in structure, the strength of the electromagnet can be tested according to different rail pressure pulses, a more impact-resistant electromagnetic material is selected to meet the reliability requirement according to the pulse test result, and a scientific basis is provided for fuel system electromagnet material selection.

The utility model discloses a recovery device for an oil rail pressure testing machine, which comprises a recovery cover, an oil leakage pipe, a filter screen, an electric heating wire and an oil receiving tank, an inlet of the oil leakage pipe is connected to the bottom of the recovery cover; the filter screen is mounted at an inlet of the oil leakage pipe; the electric heating wire is mounted in the filter screen; the engine oil recovery device has the advantages that engine oil is guided to the oil leakage pipe through the inner wall of the recovery cover and then flows into the oil receiving tank, a complete recovery path is formed, cleaning frequency is reduced, and cost is saved.

The present application discloses a high-efficiency treatment device for waste oil barrels, which relates to the technical field of crushing devices, and comprises a platform and a rear cover, a pressure plate and an electric push rod arranged on the upper end surface of the platform, wherein one side of the pressure plate is slidably connected with a pressure rail, and the pressure rail has a built-in slide rail and a motor; a feed port and a discharge port are respectively provided at the bottom of the rear cover, and a crushing mechanism is arranged inside the rear cover; a conveyor belt is arranged below the rear cover; a wheel groove is provided on the platform, a rotating wheel is connected in the wheel groove, a rotating motor is connected to the rear side of the rotating wheel, and a main shaft is arranged at the output end of the rotating motor; the crushing mechanism comprises a horizontal crushing device and a vertical crushing device; a plurality of crushing teeth are arranged at the bottom of the vertical crushing device; a plurality of magnetic columns are fixed on the rotating wheel, and magnets are arranged inside the magnetic columns; a material insertion port is provided at the top of the rear cover; and a technical effect of improving the crushing efficiency of the crushing mechanism and improving the overall service life of the device is achieved.

The invention relates to the technical field of ship fault detection, in particular to a ship dual-fuel electronic injection diesel engine-oriented fault simulation method, which comprises the following steps of: acquiring rail pressure change data of a dual-fuel electronic injection diesel engine when a ship has a fault in navigation; a simulation model of the dual-fuel electronic injection diesel engine is constructed, adjustable fault parameters of all fault types in the simulation model are adjusted for rail pressure simulation, and first rail pressure simulation data are obtained; performing empirical mode decomposition on each piece of rail pressure change data and the first rail pressure simulation data to obtain a first intrinsic mode function component and a second intrinsic mode function component, and respectively calculating the similarity between the multiple pieces of rail pressure change data and the first rail pressure simulation data; and adjusting the first rail pressure simulation data based on the first K rail pressure change data with the highest similarity to obtain second rail pressure simulation data. According to the invention, the simulation accuracy of the simulation signal generated in the prior art is improved.

The application aims to provide a method for regulating the consistency of injector injection of each cylinder of an engine considering transient supply-injection disturbance, belonging to the field of engines. First, the rail pressure curve, the injector inlet pressure curve, the driving current curve and the injection rate curve data under different supply time and injection time are obtained on a high-pressure fuel injection system test bench to construct a data set. Then, based on the data set, a Transformer time series model is established with the rail pressure, pressure and current curve as input and the injection rate as output, the injection rate is predicted online and the injection quantity is calculated through time integration. Next, through the programmable logic controller, the injection pulse width under different supply and injection time is feedback regulated to realize the accurate control of the injection quantity of single and multiple injections of each cylinder. The application effectively responds to the supply-injection disturbance under transient working condition, improves the consistency of the injection quantity of each cylinder, and improves the combustion efficiency and running stability of the engine.

The invention provides a high-pressure fuel cooperative control system based on multi-gear rail pressure sensing, which is characterized in that a variable frequency motor is in transmission connection with a rotor type high-pressure oil pump through a coupler, an oil outlet of the rotor type high-pressure oil pump is communicated with a pressure-stabilizing common-rail pipe through a common-rail oil inlet pipe, and the rotor type high-pressure oil pump is further communicated with a fuel tank through a first oil return pipe; the pressure-stabilizing common-rail pipe is connected with the oil sprayer through a high-pressure oil pipe A mechanical control valve is arranged at one end of the pressure stabilizing common rail pipe and communicated with the fuel tank through a second oil return pipe. An electromagnetic valve is arranged at the other end of the pressure stabilizing common rail pipe and is communicated with the fuel tank through a third oil return pipe; a pressure storage cavity is formed in the pressure stabilizing common rail pipe, a plurality of independent channels are formed in the pressure storage cavity, each channel is correspondingly provided with a rail pressure sensor, a circulation valve is arranged at an input port of each channel, and the circulation valves and the rail pressure sensors are electrically connected with a controller. Accurate measurement within a large pressure range can be achieved, and the stability of the fuel flow of the fuel injector is guaranteed.

The invention belongs to the technical field of internal combustion engine electronic control, and discloses a Smith-augmented reduced-order ESO common rail pressure control method based on online parameter identification, which comprises the following steps: step 1, data acquisition and preprocessing, step 2, high-pressure common rail system modeling and discretization to obtain a high-pressure common rail system discretization model, and step 3, high-pressure common rail system control. The method comprises the following steps of: 1, constructing an online parameter identification module based on a recursive least square method with a forgetting factor to solve a system pole parameter, a control gain parameter and a constant bias parameter, 3, calculating a time-delay-free virtual prediction rail pressure by a Smith predictor, 4, observing a total disturbance estimated value and a change rate estimated value of a system by an augmented reduced-order expansion state observer, and 5, calculating a total disturbance estimated value and a change rate estimated value of the system by the augmented reduced-order expansion state observer. And combining with the composite anti-interference control law, and controlling the output control quantity to act on a high-pressure oil pump actuator.

The present invention is applicable to the field of engine fuel pretreatment technology and provides a micro hydrogen bubble / diesel fuel preparation and supply device, comprising: a fuel tank, a controllable oil valve, a diesel filter, a three-way valve, a low-pressure fuel pump, a nanobubble generator, a first hydrogen bubble / diesel fuel storage device, an electronic control unit, a second hydrogen bubble / diesel fuel storage device, a high-pressure fuel pump, a high-pressure fuel rail, a fuel injector, an engine, and a hydrogen supply and hydrogen detection seal. The diesel flow channel between the fuel tank and the high-pressure fuel pump constitutes the low-pressure fuel circuit. The fuel tank outlet is connected to the inlet of the controllable oil valve, the outlet of the controllable oil valve is connected to the inlet of the diesel filter, the outlet of the diesel filter is connected to the first inlet of the three-way valve, and the third outlet of the three-way valve is connected to the inlet of the low-pressure fuel pump. The present invention provides a micro hydrogen bubble / diesel fuel preparation and supply device, and the fuel rail pressure sensor can measure the fuel rail pressure and transmit the signal to the electronic control unit.

The invention provides an engine control method and device, a storage medium and electronic equipment, and the method comprises the steps that operation parameters of an engine are obtained, and the operation parameters comprise the actual load and the actual rotating speed of the engine, the rotating speed synchronization state of the engine and a starter and the rail pressure state of the engine; the working state of a relay of the starter is determined according to the actual load size of the engine, the rotating speed synchronization state and the rail pressure state of the engine, and the throttle valve opening degree of the engine is determined according to the rotating speed synchronization state, the rail pressure state of the engine and the size relation between the actual rotating speed of the engine and the set rotating speed; the relay of the starter is controlled to work according to the working state of the relay of the starter, and the throttle valve is controlled to work so that the actual rotating speed of the engine can be the same as the set rotating speed. According to the method, the actual rotating speed of the engine can be quickly aligned with the set rotating speed by controlling the relay to work and adjusting the opening degree of the engine throttle valve, so that the engine shaking time is shortened.

The invention relates to the technical field of engine operation dynamics, in particular to an engine operation dynamics correction method and device and a storage medium, and the correction method comprises the following steps: obtaining a concentration value of a to-be-measured object; calculating the deviation percentage of the concentration value of the to-be-detected object according to the condition that the concentration value of the to-be-detected object exceeds a set range and the mass of the to-be-detected object is accumulated to a limited mass value; according to the fact that the deviation percentage is larger than a preset limit value, a correction coefficient corresponding to the deviation percentage is obtained; and correcting the rail pressure and the excess air coefficient according to the correction coefficient. And a corresponding correction coefficient is obtained according to the calculated deviation percentage, the step ensures that correction measures can be taken in time when the emission deviation is obvious, finally, the rail pressure and the excess air coefficient are corrected according to the correction coefficient, the combustion process of the engine is optimized, the dynamic correction method can adjust combustion parameters in real time, and the combustion efficiency is improved. It is ensured that emissions are within a reasonable range, and generation of smoke dust is reduced.