4233results about "Fuel injection control" patented technology

The invention relates to the technical field of fault detection, and discloses a diesel generating set fault detection method and system based on deep learning, and the method comprises the steps: obtaining first vibration signal data, and carrying out the time-frequency decomposition, and obtaining a dynamic change feature; de-noising processing is carried out on the dynamic change features to obtain a time-frequency feature sequence; extracting a peak energy distribution data set, and calculating each frequency band entropy value to obtain a frequency band entropy value sequence; classifying the frequency band entropy sequence, determining a random fluctuation reference mode, and separating to obtain an abnormal frequency component; calculating a spectral line spacing and amplitude ratio, obtaining a spectral line feature data set, classifying the spectral line feature data set, and determining a fault classification result; obtaining current second vibration signal data, performing similarity calculation on the current second vibration signal data and a pre-established normal mode library, and outputting a fault feature vector; and verifying the fault feature vector to obtain a final fault detection result. According to the method, closed-loop diagnosis from signal acquisition to fault classification can be realized, and the fault detection precision of the diesel generating set is improved.

The invention discloses a transmission driving control method of a bimodal integrated engine. The transmission driving control method comprises the following steps: S1, state sensing; s2, mode decision making; S3, dynamic adjustment; s4, mode switching; S5, power optimization distribution; s6, adaptive learning is carried out; and S7, fault-tolerant guarantee. The invention further discloses a bimodal integrated engine transmission system which comprises the following modules: a power input module; a transmission adjusting module; a state sensing module; an intelligent control module; and a fault-tolerant guarantee module. Parameters are dynamically adjusted through fuzzy PID control according to speed deviation, meanwhile, real-time correction is conducted in combination with a multi-mode intelligent algorithm, speed fluctuation is precisely controlled within + / -3 km / h, flight stability is guaranteed, a model prediction control and multi-mode intelligent control cooperation mechanism is adopted, an optimal power output sequence is calculated in advance, coordinated distribution is completed, and the optimal power output sequence is controlled to be within + / -3 km / h. The dynamic response speed is increased by 40%, and the high-dynamic task requirement is met.

The invention discloses a control method for improving the cold starting performance of a methanol extended-range hybrid power system, relates to the field of engine control, and solves the technical problem that the existing methanol engine starting mode has limited effects on the thermal atmosphere of methanol atomization, premixing and methanol injection ignition success under the low-temperature condition. The method comprises the steps that an engine starting success condition is set, the real-time environment temperature is obtained, when the real-time environment temperature is larger than the preset first starting temperature, a first starting strategy is adopted to start an engine, and whether the engine is started successfully or not is judged according to the engine starting success condition. The invention further discloses a system for improving the cold start performance of the methanol extended-range hybrid power system. Methanol atomization is promoted, methanol is fully premixed, and the successful thermal atmosphere effect and success rate of a methanol injection point are improved.

The invention discloses an automobile air flow sensor fault diagnosis method and system, and relates to the technical field of intelligent fault diagnos.The method comprises the steps that driving behavior parameters are collected in real time, and driving style feature vectors are obtained through classification of a driving behavior recognition model; theoretical air inflow is calculated based on an engine three-dimensional fluid dynamic model, and dynamic correction is carried out in combination with driving style characteristics to generate a corrected theoretical flow signal; and finally, the actually measured signal of the air flow sensor and the corrected theoretical signal are compared and analyzed, and accurate diagnosis of the fault of the air flow sensor is realized. The technical problems that an existing air flow sensor fault diagnosis method cannot depend on a static threshold value, is difficult to adapt to driving styles and working condition changes, is insufficient in accuracy and is prone to false report and missing report are solved, self-adaptive correction of the theoretical air inflow is achieved by combining driving behavior recognition and dynamic correction, and therefore the diagnosis accuracy is improved, and the fault diagnosis efficiency is improved. And false alarm and missing alarm are reduced.

The invention relates to the technical field of hydrogen internal combustion engines, in particular to a water-hydrogen combined supply internal combustion engine which comprises a first power generation unit driven by hydrogen and air combusted by a hydrogen internal combustion engine unit. The gas recovery unit converts water vapor in exhausted gas into liquid water through a condensation driving module and drives the second power generation unit at the same time; the fuel supply unit adjusts the hydrogen injection amount through a generated adjusting instruction based on multi-dimensional data detected by the monitoring unit and processed by the data processing unit and the confidence decision-making unit, and then generation of nitric oxide is inhibited. Condensate water recovery and combustion control of the hydrogen internal combustion engine are deeply combined, the actual exhaust humidity is reversely deduced by monitoring the flow of the condensate water, the gas detection error tolerance range is dynamically corrected, the hydrogen-oxygen combustion ratio judgment result is linked, safety amplitude limiting control over hydrogen fuel supply is achieved, and nitrogen oxide generation of the hydrogen internal combustion engine is reduced.

The invention provides a control method and device of a mixed gas power generation system, equipment and a storage medium, and belongs to the technical field of new energy power generation. The method comprises the following steps: calculating the introduction rate of each target gas based on load operation data, the type of gas introduced into the gas generator set at present, the type of target gas introduced into the gas generator set after a first duration in a combustion stage and the proportion of the target gas, based on the introduction rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the exhaust gas proportion used for heating each target gas is calculated, each target gas is heated based on the exhaust gas proportion, and the temperature value of the gas in the gas generator set is monitored in real time; and regulating and controlling the operation state of the mixed gas power generation system based on the temperature value. The proportion of gas input into the gas generator can be flexibly adjusted, and the energy utilization rate of the system is increased.

Embodiments of the present application disclose a fuel injection parameter adjustment method, device, equipment and storage medium. The fuel injection parameter adjustment method comprises: determining that a vehicle enters a series-parallel hybrid working condition; recording a set of initial fuel injection parameters of an engine; performing fuel injection parameter self-learning, obtaining a plurality of sets of test fuel injection parameters based on the set of initial fuel injection parameters; sequentially using the plurality of sets of test fuel injection parameters to run the engine, and calculating a plurality of test fuel consumptions of the vehicle; wherein each set of test fuel injection parameters corresponds to a test fuel consumption; the running time of each set of test fuel injection parameters is a first self-learning time; based on comparing the plurality of test fuel consumptions, determining an optimal self-learning result from the plurality of sets of test fuel injection parameters; and replacing the initial fuel injection parameters with the self-learning result.

The invention discloses a vehicle engine noise optimization method and device, equipment and a storage medium, and relates to the technical field of engine control, and the method comprises the steps: obtaining a current driving mode when a user drives a vehicle, and determining environment data and vehicle driving information during vehicle driving according to the current driving mode; a preset noise-electric quantity mapping table is inquired through the environment data and the vehicle driving information based on the current driving mode, the target engine rotating speed is obtained, a vehicle engine is controlled to operate at the target engine rotating speed, and perceptible engine noise is calculated based on the environment data and the vehicle driving data; a vehicle engine is controlled based on the perceptible engine noise to complete engine noise optimization. The engine noise is optimized by inquiring the proper engine rotating speed and taking the perceptible noise as the optimization target, and the uncomfortable experience of the engine noise under the working conditions of low speed red light and the like can be greatly reduced.

The present invention discloses a fully variable valve control method and engine system, the method comprising: obtaining a first reference signal, a second reference signal, and a current operating condition signal of the engine during engine operation; determining a target opening angle and a target closing angle of the valve based on the current operating condition signal; determining the opening and closing times of the valve based on the current operating condition signal, the first reference signal, the second reference signal, the target opening angle, and the target closing angle; obtaining the actual opening angle when the valve is open, and obtaining the actual closing angle when the valve is closed; and performing real-time corrections on the target opening angle and the target closing angle based on the relationship between the actual opening angle and the target opening angle, and the relationship between the actual closing angle and the target closing angle, so that the actual opening angle is the same as the target opening angle, and the actual closing angle is the same as the target closing angle. Using the above method, precise control of the valve angle is achieved.

An ammonia-rich combustion coupled dual-mode prechamber ammonia-fueled engine control system is provided, including an ammonia-fueled engine and an electronic control unit. The ammonia-fueled engine includes a combustion chamber, a dual-mode jet ignition device, and an ammonia injector. The dual-mode jet ignition device includes a prechamber, an air injector, and a fuel injector. When the engine operates, ammonia fuel is firstly injected into the combustion chamber by the ammonia injector to form a rich ammonia-air mixture with air in the combustion chamber. During a compression stroke of the engine, the rich ammonia-air mixture in the combustion chamber is entered into the prechamber through a jet hole. The air injector performs scavenging in the prechamber until a equivalence ratio of prechamber gas mixture is less than 1.0, and then the fuel injector injects fuel into the prechamber forming target mixture. Finally, the target mixture is ignited by the spark plug.

The invention discloses an air-fuel ratio control method for a high-pressure direct injection engine in a diesel-natural gas dual-fuel cylinder, and relates to the technical field of engine control, and the air-fuel ratio control method comprises the following steps: collecting diesel mass flow, natural gas volume flow and natural gas component data, and determining a diesel-natural gas mixing ratio; a basic target air-fuel ratio is obtained by combining the real-time rotating speed of an engine, the load and the diesel oil-natural gas mixing proportion; based on the pressure and temperature of the intake manifold and the rotating speed of the engine, the target air-fuel ratio after model correction is obtained; the working condition load change rate is detected, the pre-optimized air-fuel ratio trajectory MAP is called, and a transient correction target value is generated; calculating the deviation between the transient correction target value and the measured value of the air-fuel ratio sensor and the deviation change rate, and outputting an air-fuel ratio correction value; and the final target air-fuel ratio is calculated and sent to an air flow control valve to execute air inlet adjustment. The method is suitable for engine application scenes requiring high-precision and self-adaptive control to improve combustion efficiency and reduce emission.

The invention discloses a dual-fuel engine combustion control method based on hydrogen-ammonia energy ratio and gas distribution overlap angle regulation and control, which comprises the following steps: 1) fuel ratio control: acquiring current operation state parameters of an engine, determining a target AER according to preset mapping, regulating ammonia gas supply quantity and hydrogen supply quantity to enable the actual AER to reach the target AER, and controlling the fuel ratio; the AER is adaptively set according to engine load and combustion stability conditions; 2) valve timing control: adjusting the opening time of an intake valve or the closing time of an exhaust valve through a variable valve timing mechanism so as to change a valve timing overlap angle VOA, wherein the VOA is set to be a negative value, a small overlap angle or a positive overlap angle according to the working condition of an engine; (3) injection time sequence optimization is conducted, specifically, the injection time of ammonia gas and the in-cylinder direct injection time of hydrogen are controlled respectively, and coordinated optimization of a fuel injection strategy and valve timing is achieved; and 4) closed-loop steady-state control: monitoring a combustion state and an emission index in real time, comparing the combustion state and the emission index with a threshold value to serve as a feedback signal, and correcting the target AER and VOA settings in time. According to the dual-fuel engine combustion control method based on regulation and control of the hydrogen-ammonia energy ratio and the gas distribution overlapping angle, the energy ratio of hydrogen fuel and ammonia fuel and the overlapping opening angle of an intake valve and an exhaust valve are dynamically adjusted under different working conditions, so that the combustion reaction rate and temperature are coordinated, and the stable and efficient combustion process is achieved; and harmful emissions of NOx, unburned ammonia and the like are obviously reduced.

An internal combustion engine control device includes a piston temperature estimation unit, a temperature correction determination unit, a temperature correction unit, and a target value calculation unit. The piston temperature estimation unit estimates a piston temperature of an internal combustion engine. The temperature correction determination unit determines whether it is a correction timing for correcting the estimated piston temperature. The temperature correction unit corrects the estimated piston temperature estimated by the piston temperature estimation unit to a predetermined temperature at the correction timing determined by the temperature correction determination unit. The target value calculation unit calculates a control target value for an actuator of the internal combustion engine based on the estimated piston temperature or the piston temperature corrected to the predetermined temperature by the temperature correction unit.

The invention relates to the technical field of engine control, in particular to an engine combustion control method, device and system based on double oil sprayers and a computer program product. Comprising the steps that when an engine enters a lean-burn working condition and meets a self-learning condition, self-learning of the injection starting angle and the excess air coefficient of an auxiliary oil injector is conducted; ignition advance angle self-learning of the auxiliary fuel injector is carried out; and fuel injection control over the auxiliary fuel injector is conducted on the basis of the injection starting angle, the excess air coefficient and the ignition advance angle obtained through self-learning. And when refined fuel oil control is carried out to achieve the optimal fuel consumption of the engine, the lowest NOx emission requirement under the lean-burn working condition of the engine is met.

The invention relates to a method (200) for determining (290) the amount of NH3 contained in an exhaust gas (10) downstream of an internal combustion engine (1) using an NH3 and NOx sensitive NX sensor (17, 18, 19), comprising receiving (210) a sensor signal from the NX sensor and determining the amount of NH3 based on the sensor signal and depending (220, 240, 260) on the fulfillment of at least one condition (331, 332, 333), wherein the at least one condition (331, 332, 333) is the presence of an exhaust gas temperature exceeding a minimum exhaust gas temperature, in particular for the first time, as a first condition, and / or the presence of an exhaust gas temperature exceeding a maximum exhaust gas temperature as a second condition, and / or the presence of heat input into an exhaust gas system (120) upstream of the NX-Sensors (17, 18, 19), which exceeds a minimum heat input, as the first condition,and / or the presence of a heat input into an exhaust system (120) upstream of the NX sensor (17, 18, 19) that exceeds a maximum heat input, as the second condition. In embodiments of the invention, further conditions can also be checked, wherein, in particular, the presence of a sensor signal level that exceeds a minimum level can be used as a third condition, and / or the presence of a sensor signal gradient that exceeds a positive threshold can be used as a fourth condition. Furthermore, a computing unit (20) and a computer program for carrying out such a method (200) are proposed.

The present invention relates to the technical field of vehicle control, in particular to an engine oil supply control method and apparatus, a vehicle, a storage medium and a program. The method comprises: measuring the environment temperature of a vehicle when the vehicle is in a downhill condition; if the environment temperature meets a preset low-temperature condition, calculating a temperature difference value between the temperature in a cab and the set temperature of an air conditioner in the case of fuel cut-off of an engine; and, on the basis of the temperature in the cab, the set temperature of the air conditioner and the temperature difference value, controlling the engine to recover oil supply or maintain fuel cut-off. The present invention solves the problems that when a vehicle runs in a hill shift mode under the conditions of low temperature and mountainous long downhill areas, a long-time fuel cut-off of an engine affects the comfort of heating and the driving safety for drivers and passengers in the vehicle; in addition, the fuel economy, the drivability, the braking safety of vehicles and the service life of braking devices can be guaranteed to the maximum extent while ensuring the overall vehicle performance of vehicles.

The embodiment of the invention provides an engine control method and device, a vehicle and a storage medium, and the method comprises the steps that the running state of the vehicle is monitored, a state monitoring result is obtained, and the state monitoring result is used for representing whether the knocking phenomenon occurs in the current running state of the vehicle or not; in response to the state monitoring result that the knocking phenomenon occurs in the current running state of the vehicle, the fuel quality of fuel currently used by the vehicle, the current running parameters and running state parameters of an engine and a first control parameter are obtained, the fuel quality is used for reflecting the combustion capacity of the fuel in multiple dimensions, and the fuel quality is used for reflecting the combustion capacity of the fuel in multiple dimensions; the running state parameters are used for reflecting running conditions of the engine; adjusting a first control parameter currently used by the engine based on the fuel oil quality and the operation parameter operation state parameter to obtain a target control parameter; and controlling the engine to operate based on the target control parameter. The technical problem that in the related technology, the stability of controlling operation of the engine is poor is solved.

The invention relates to the technical field of process control, in particular to an in-cylinder direct injection methanol generator combustion system control method based on multi-objective optimization, which comprises the following steps: acquiring multi-source sensor data of a methanol generator, performing feature extraction and evaluation on the multi-source sensor data, and generating a control weight distribution matrix; performing weighted fusion by using the control weight distribution matrix to obtain a fusion control vector; the method comprises the following steps: constructing an in-cylinder process control model, adaptively adjusting model parameters in combination with physicochemical characteristics of methanol fuel and in-cylinder combustion characteristics, comprehensively evaluating energy conversion efficiency, emission level and operation stability by adopting a multi-objective optimization algorithm based on the process control model and in combination with real-time working condition data, and carrying out iterative search on a Pareto optimal solution set. Dynamically generating adaptive control parameters; and generating a control instruction according to the self-adaptive control parameters, and adjusting the operation parameters of the methanol generator in real time. Accurate control over the combustion system is achieved by dynamically adjusting the control parameters of the methanol generator.

The invention relates to a method for determining the effective compression modulus of fuel when using a high-pressure pump (15) of an internal combustion engine (40), which high-pressure pump is driven by a shaft and is used to pump fuel from a low-pressure area via a pumping chamber of the high-pressure pump (15) by means of a piston into a high-pressure accumulator (18), comprising: providing a signal profile of the fuel pressure in the high-pressure accumulator (18), detected by means of a sensor (20), wherein the signal profile includes a pumping process in which fuel is pumped by means of the high-pressure pump (15); determining, based on the signal profile and a pumping start time at which fuel is pumped into the high-pressure accumulator by means of the high-pressure pump, a delivery volume of the pumping process; determining fuel delivery losses during the pumping process;Determining the pressure difference between before and after a delivery stroke of the high-pressure pump during the delivery process, and determining, based on the delivery volume, the pressure difference and the delivery losses, the effective compression modulus.

The invention discloses a method for actively regulating and controlling the temperature of an exhaust pipe under the sliding working condition of an engine, and relates to the engine control technology, the current working condition of the engine is recognized, and if the current working condition is the sliding working condition, an exhaust temperature increasing regulation and control mode is started; according to the exhaust temperature increasing regulation and control mode, a temperature rise demand target is calculated according to the temperature difference value between the current exhaust temperature of an exhaust pipe of the engine and the set target exhaust temperature, and a temperature rise control strategy is selected according to the temperature rise demand target and executed. The invention further discloses a system for actively regulating and controlling the temperature of the exhaust pipe under the engine sliding working condition. The exhaust temperature in the sliding process is increased, the cold and hot temperature difference of the exhaust pipe is reduced, and therefore the reliability of the exhaust pipe is improved.

A system, method, and apparatus for zero or low NOx emissions during a certain operating period are provided. A system can include an aftertreatment system including a catalyst. The system can include a pump coupled to at least an intake of an engine and an exhaust of the engine. The system can include a heater positioned downstream of the engine. The system can further include a controller coupled to at least the aftertreatment system. the pump, and the heater. During a warmup period for the aftertreatment system. the controller is configured to maintain the engine in an off state. initiate the heater to increase a temperature of the aftertreatment system while the engine is in the off state. and control the pump to generate an airflow directed from the intake to the heater to increase the temperature of the aftertreatment system.

In a method for adjusting a vehicle parameter, where the vehicle is equipped with an exhaust gas sensor, an exhaust gas sensor signal is received. Based on this signal, a parameter representative of the vehicle's air-fuel ratio is determined. Depending on this parameter, it is then determined whether a transition from a superstoichiometric to a substoichiometric air-fuel mixture, or from a substoichiometric to a superstoichiometric air-fuel mixture, is imminent. If a transition is imminent, the current value of the parameter is adjusted until a predefined termination condition is met. The current parameter value is then transmitted.

The present invention discloses a method for optimizing and controlling target boost pressure, comprising: entering boost closed-loop enablement when boost closed-loop enablement conditions are met, obtaining a filtered EGR rate characteristic coefficient after first-order low-pass filtering based on a filtering time and an EGR rate characteristic coefficient; calculating a target boost pressure that has not been dynamically optimized based on the currently disclosed target boost pressure, the EGR rate characteristic coefficient, and the filtered EGR rate characteristic coefficient; dynamically optimizing the target boost pressure that has not been dynamically optimized based on the actual boost pressure read in real time to obtain a dynamically optimized target boost pressure; and controlling a boost actuator based on the dynamically optimized target boost pressure. The method provided by the present invention can achieve optimized control of the target boost pressure, further improving boost closed-loop control stability and EGR response accuracy.

This invention relates to the field of automotive energy management and data-driven technology, providing a data-driven method and system for correcting engine transient fuel consumption. The method includes the following steps: real-time acquisition of multi-source data during vehicle operation; preprocessing of the multi-source data to output effective operating condition data; construction of three transient fuel consumption correction sub-models based on various artificial neural networks and the effective operating condition data; linear weighted fusion of the three transient fuel consumption correction sub-models to obtain a total transient fuel consumption correction model; and correction of engine transient fuel consumption based on the total transient fuel consumption correction model. This invention, by real-time acquisition of multi-source data during vehicle operation and establishing a total transient fuel consumption correction model through data-driven and intelligent modeling methods, achieves accurate prediction and real-time correction of transient fuel consumption, thereby improving the fuel economy and energy management optimization effect of hybrid vehicles under actual operating conditions.

A system, method, and apparatus for detecting sensor tampering are provided. An aftertreatment system includes a first train having a first selective catalytic reduction (SCR) system, a first doser, and a first NOx sensor; a second train having a second SCR system, a second doser, and a second NOx sensor; and a controller. The controller determines satisfaction of activation conditions. The controller doses reductant to the first and second SCR systems. The controller determines the NOx levels of the first SCR system and the second SCR system. The controller adjusts the dosing of the first SCR system for a period of time. The controller measures the NOx levels of the first SCR system and the second SCR system. The controller determines a difference between the third and first NOx levels and a difference between the fourth and second NOx levels.The control generates an indication as to whether the first NOx sensor is displaced.

The invention discloses an air-fuel ratio control method, system, equipment and medium, and relates to the technical field of data processing, and the method comprises the following steps: obtaining a front oxygen sensor and a rear oxygen sensor, obtaining two historical monitoring periods, obtaining a front oxygen ion concentration voltage sequence according to the front oxygen sensor, and obtaining a rear oxygen ion concentration voltage sequence according to the rear oxygen sensor; a front oxygen stability index is obtained, whether the front oxygen stability index is lower than a first preset threshold value or not is judged, if yes, a rear oxygen steady-state interval is obtained based on the front oxygen stability index, and a rear oxygen stability index is obtained; whether the post-oxygen stability index is higher than a second preset threshold value or not is judged, if yes, a current front oxygen ion concentration voltage value and a current post-oxygen ion concentration voltage value at the current moment are collected based on a front oxygen sensor and a post oxygen sensor, and the current air-fuel ratio is obtained; and the oil nozzle control compensation proportion is obtained according to the current air-fuel ratio and the standard air-fuel ratio. The method has the advantages of stable and reliable control, dynamic self-adaption and good data processing effect.

The invention discloses an automobile filter abnormity monitoring method based on multi-sensor fusion, which comprises the following steps: acquiring and preprocessing multi-modal sensing data to generate standardized multi-modal sensing data; carrying out working condition identification and standardization on multi-modal sensing data to obtain working condition state variables and a monitoring sequence; an improved Holt-Winters model is constructed, and an automobile filter prediction baseline is obtained; calculating a residual error sequence and performing hierarchical processing to obtain a low-frequency residual error and a high-frequency residual error; executing a CUSUM algorithm to obtain a bidirectional CUSUM statistical magnitude; statistical analysis is carried out, a self-adaptive threshold value is constructed, and the category and severity of the abnormal event are judged. According to the method, the improved Holt-Winters model and the CUSUM algorithm are combined, so that accurate abnormal event identification and classification of the automobile filter in a complex multi-working-condition environment are realized.

The invention provides an oil injection prediction control method and device and electronic equipment, and relates to the technical field of vehicle control. The method comprises the steps that working condition data of a vehicle in a preset collection period are obtained, the working condition data comprise torque of an engine and receding angle data of all combustion cylinders, and the receding angle data comprise the number of times and duration of receding angles of the combustion cylinders in different ranges; dividing the torque of the engine into a plurality of working condition gradients, and determining an influence weight corresponding to each working condition gradient; the operation duration of the torque of the vehicle in each working condition gradient in the current collection period is determined; for each combustion cylinder, determining an oil injection correction factor of the combustion cylinder according to the operation duration of the torque at different working condition gradients, the influence weight of each working condition gradient and the retreating angle data of the combustion cylinder; and correcting the oil injection quantity of each combustion cylinder according to the oil injection correction factor of each combustion cylinder so as to control the actual oil injection quantity of the combustion cylinder.

The invention provides a vehicle control method and system, a vehicle and a storage medium, and the method comprises the steps that when the temperature of a downstream switch oxygen sensor is smaller than the dew point temperature, an engine control unit determines the target maximum allowable rotating speed and the target maximum allowable torque of an engine according to the water temperature of the engine, a working condition coordination request is sent to the hybrid power control unit; and the hybrid power control unit controls the engine and the motor to enter a series connection mode according to the working condition coordination request, and controls the maximum allowable rotating speed of the engine to be smaller than or equal to the target maximum allowable rotating speed and the maximum allowable torque of the engine to be smaller than or equal to the target maximum allowable torque. Therefore, the actual rotating speed of the engine does not exceed the target maximum allowable rotating speed, and the actual torque of the engine does not exceed the target maximum allowable torque. The temperature of the engine in the combustion process can be reduced, generation of harmful substances in originally discharged waste gas is reduced, and therefore the emission performance of the vehicle is improved to a certain degree.

The invention relates to the technical field of vehicle supercharging control, in particular to a supercharger performance control method and device of a hybrid power system and a vehicle. The method comprises the steps that a plateau ignition angle MAP table and a plateau air inlet VVT angle MAP table of the vehicle in a high altitude mode are obtained; a plateau air inlet VVT angle MAP table is corrected, meanwhile, the knocking thrust angle condition of the hybrid power system is checked, and the maximum performance of a current supercharger is determined so as to correct the exhaust gas recirculation rate; calibration limits are generated based on at least part of detonation, preignition, the highest rotating speed of turbine hardware, the combustion center of gravity, the combustion boundary and the HCU series-parallel economic line, and comprehensive test check is conducted based on the calibration limits so that performance optimization can be conducted on the engine. Therefore, the problems that in the related technology, due to the fact that the performance and the response speed of the supercharger in the plateau area are reduced, the actual torque of an engine cannot meet the requirement of a hybrid power system, and then the series-parallel connection switching and electricity protection capacity of the vehicle is affected are solved.