496results about "Speed sensing governors" patented technology

The present application relates to the field of engineering machinery. Provided are an oil consumption self-optimization control method and apparatus and a work machine. The method comprises: acquiring a plurality of actual working condition points of an engine under a current gear within a preset duration; on the basis of a rotation speed measurement value and a torque measurement value of each actual working condition point, determining a centralized working condition point of the engine; determining a target oil consumption area of the engine on the basis of a preset oil consumption model and the rotation speed measurement value and the torque measurement value of each actual working condition point, and, on the basis of the preset oil consumption model, determining oil consumption corresponding to the centralized working condition point; and if the oil consumption corresponding to the centralized working condition point does not satisfy the target oil consumption area, determining a candidate rotation speed of the engine on the basis of the target oil consumption area, and, on the basis of the candidate rotation speed and the maximum-power point among the plurality of actual working condition points, determining a target rotation speed of the engine.

The invention provides an engine shutdown method, device and equipment and a storage medium, the engine rotating speed is controlled to reach the shutdown target rotating speed in a closed-loop mode based on an integrated starter generator ISG, the engine torque is adjusted to be the target torque, and the engine after torque unloading is obtained; calculating a feed-forward torque according to the target shutdown rotation speed and an expected change rate of the target shutdown rotation speed; and based on the feedforward torque, the rotating speed of the engine after torque unloading is reduced to zero from the shutdown target rotating speed. In the application, the torque of the engine is unloaded based on the ISG, and the rotating speed of the engine after the torque is unloaded is controlled to be reduced to zero according to the expected change rate of the rotating speed based on the feed-forward torque, so that the jittering of the engine in the shutdown process can be effectively relieved, and the driving experience feeling of a user is further improved.

The invention provides a rotating speed self-adaptive control method and device for a marine diesel engine, and relates to the technical field of rotating speed control, and the method comprises the steps: carrying out the ship route fitting according to the shipping scheduling of a diesel engine driven ship, and obtaining a voyage sequence; carrying out load change calculation to obtain a local load sequence; taking the voyage time consumption constraint as a distribution constraint, carrying out voyage time consumption distribution optimization, and obtaining a local time consumption sequence; performing navigational speed optimization to obtain a target navigational speed sequence; performing diesel engine rotating speed coupling calculation according to the target navigational speed sequence to obtain a diesel engine rotating speed control sequence; and performing self-adaptive dynamic regulation and control on the diesel engine driven ship by adopting the diesel engine rotating speed control sequence. The technical problems that in the prior art, the rotating speed of the diesel engine is adjusted by crew according to experience, a refined automatic control mechanism is lacked, and the change of ship load environment conditions cannot be dynamically responded, so that the operation efficiency and the energy consumption of the whole voyage are difficult to be optimal are solved.

An agricultural harvesting system includes a control system. The control system identifies a predictive value of a power characteristic based on a relationship between the power characteristic and a characteristic. The control system generates a control signal to control a controllable subsystem of a mobile hybrid agricultural harvesting machine based on the predictive value of the power characteristic.

The invention discloses a range extender idle speed control method and a related device. When the power generation demand power of a range extender is 0, the demand torque of an engine and the demand torque of a generator are set to be 0; according to the actual torque of the engine, whether the control mode of the generator is switched to rotating speed control or not is determined, and the actual rotating speed of the generator is controlled to be decreased to the target rotating speed; and if the actual rotating speed of the generator is controlled to be reduced to the standard rotating speed and the engine enters a self idle speed control state, the actual rotating speed of the generator is controlled to be maintained at the target rotating speed, and after the duration of the target rotating speed reaches the target duration, the control mode of the generator is switched to be torque control, and the torque is controlled to be 0. Therefore, the engine is maintained at idle speed. According to the method, corresponding auxiliary speed regulation can be carried out based on the generator in different stages of the process that the engine enters the idle speed, so that the rotating speed of the engine can be transited stably, and shaking or shutdown of the engine in the process of entering the idle speed is avoided.

The invention discloses an adjusting system for controlling the rotating speed of an automobile engine, and the system is characterized in that the system comprises a data collection module which collects the conventional operation parameters of the automobile engine in real time, the conventional operation parameters comprise the rotating speed, the torque, the air inflow, the oil temperature and the oil pressure, and also collects the acceleration, the gradient information, the external environment temperature and humidity of a vehicle and the driving behavior data of a driver; such as accelerator pedal depth change rate and brake frequency; the data analysis module is connected with the data acquisition module and is used for deeply mining a relationship and a potential rule in data by applying a long short-term memory (LSTM) network algorithm in deep learning and a fusion analysis method based on a physical model, identifying a real-time running state and a future change trend of the engine and intelligently diagnosing potential fault hidden dangers; the fuel injection amount and the ignition time can reach the optimal state through accurate rotation speed adjustment, fuel consumption is greatly reduced, fuel economy is improved, and expenditure is saved for users.

A diesel engine control method and device combining feedback based on the LSTM algorithm and PID, which relates to the technical field of diesel engine speed control. The technical problem to be solved is "how to provide a diesel engine control method that can be applied to the initial state and has high accuracy". The method includes: collecting diesel engine parameters; inputting the diesel engine parameters into the LSTM network for iterative training until a predicted speed that meets the preset requirements is obtained; taking the difference between the predicted speed that meets the preset requirements and the actual speed at the previous moment and inputting it into the PID network to obtain the optimal speed. This method uses the LSTM algorithm for prediction in the feedback link and jointly obtains the optimal speed with the PID control algorithm to control the diesel engine, which can be applied to diesel engines in the initial state and has high control efficiency and accuracy.

The invention discloses a range-extended vehicle engine non-inductive operation control method, device and equipment and a storage medium, and relates to the technical field of range-extended vehicle engine control, and the range-extended vehicle engine non-inductive operation control method comprises the steps that vehicle feature information, rotating speed information and an engine state set are obtained; based on the vehicle characteristic information, the rotating speed information and the engine state set, engine working condition information, a target rotating speed and a power generation target torque are determined; and based on the engine working condition information, the target rotating speed and the power generation target torque, the engine is controlled to run in a non-inductive mode. The vehicle characteristic information, the rotating speed information and the engine state set are obtained in real time, so that the engine working condition information, the target rotating speed and the power generation target torque are determined, non-inductive operation of the engine is achieved, noise and vibration are effectively reduced, the driving comfort is improved, energy management is optimized, the responsiveness of a power system is enhanced, and the power generation efficiency is improved. And the service life of the engine is prolonged, and the comfort and market competitiveness of the whole vehicle are remarkably improved.

A closed-loop control device, for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, includes: the closed-loop control device which is configured for: detecting a generator power (PG) of the generator as a controlled variable; determining a control deviation (eP) as a difference between the generator power (PG) which is detected and a target generator power (Psoll); determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (eP); using a control rule for determining the target speed (nsoll); and being operatively connected to an open-loop control device of the internal combustion engine in such a way that the target speed (nsoll) can be transmitted by the closed-loop control device to the open-loop control device.

A closed-loop control device, for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, includes:the closed-loop control device which is configured, in a first functional state, for:detecting a generator frequency (fG) of the generator as a controlled variable;determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency fsoll);determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef);using a control rule for determining the target speed (nsoll); andbeing operatively connected to an open-loop control device of the internal combustion engine in such a way that the target speed (nsoll) can be transmitted by the closed-loop control device to an open-loop control device.

The engine device including a multi-fuel engine that is operated by burning a main fuel including a low GHG fuel, which emits less greenhouse gas than a petroleum-based fuel, and a hydrocarbon-based auxiliary fuel includes a main fuel injection unit of a fuel injection unit, which injects the main fuel by electric control, an auxiliary fuel injection unit of the fuel injection unit, which injects the auxiliary fuel by mechanical control, and a control device that electrically controls at least one of the injection volume, injection pressure, injection timing, and injection frequency of the main fuel by the main fuel injection unit. The control device controls the rotation speed of the multi-fuel engine at the time of idle operation.

The invention discloses an engine operation control method, device and system and a storage medium, and relates to the technical field of engines, the method comprises the steps that gear shifting control parameters sent by a transmission control unit are received, target parameters are obtained, and the target parameters comprise the final target rotating speed; the gear shifting control parameters comprise the real-time rotating speed of an engine; according to the gear shifting control parameters and the target parameters, whether a gear shifting synchronization stage of the current vehicle is started or not is judged; and if the gear shifting synchronization stage is started, the current target rotating speed of the engine is dynamically adjusted according to the gear shifting control parameters till the real-time rotating speed of the engine reaches the final target rotating speed. By dynamically adjusting the target rotating speed of the engine, adjustment of the rotating speed of the engine in the gear shifting process is optimized, smoothness of the vehicle in the gear shifting process is ensured, and impact and vibration in the gear shifting process are reduced.

The invention provides an excavator engine rotating speed optimizing method based on a particle swarm algorithm, an excavator rotating speed adjusting method, electronic equipment and a storage medium, and belongs to the technical field of engine control. According to the scheme, the method comprises the steps that operation parameter sets of an excavator in different working stages in the excavation circulation process are obtained; according to the operation parameter set of each working stage, initial three-dimensional particles corresponding to the working stage are set, and initialization processing of a particle swarm algorithm is carried out; an evaluation function is constructed according to the fuel consumption rate of the engine, the anti-load capacity of the whole vehicle, the volumetric efficiency of the two hydraulic pumps and the constant flow proportion of the two hydraulic pumps, and an initial global optimal solution of each working stage is obtained through calculation; and performing iterative optimization of an initial global optimal solution on each working stage based on a particle swarm algorithm. According to the excavator engine rotating speed optimization method based on the particle swarm optimization, the rotating speed displacement point with the best economical efficiency can be optimized.

The invention relates to a diesel engine low-temperature starting control method suitable for an extremely-low-temperature working condition, and the method comprises the steps: collecting the in-cylinder pressure of each combustion cycle through an in-cylinder pressure sensor in the starting process of a diesel engine, and calculating an immediate indication average pressure IMEP and a combustion center position CA50 key combustion parameter; on the basis of CA50 feedback of each cycle, the fuel injection advance angle of the next cycle is adjusted and optimized, cycle-by-cycle control over the fuel injection advance angle is achieved, and it is ensured that CA50 is intensively distributed in an efficient combustion interval; the fuel injection advance angle is optimized, the IMEP and the rotating speed of the diesel engine are monitored to serve as real-time feedback of the combustion state, the combustion state of the diesel engine becomes poor, system judgment enters motor active torque compensation control, fuel injection and motor cycle-by-cycle coupling control based on combustion parameter feedback is achieved, and it is ensured that the pressure in a cycle cylinder is stable in the starting process of the diesel engine. Combustion parameter feedback is adopted for oil injection and motor cycle-by-cycle coupling control, poor combustion cycle in an extremely low temperature environment is reduced, and stability and energy efficiency in the starting process are improved.

The invention discloses an automobile engine multi-mode electronic control system and a control method thereof, and particularly relates to the technical field of automobile engine multi-mode electronic control, the system comprises a sensor module, a mode switching module, an execution control module and a diagnosis module, the sensor module collects parameters such as rotating speed and air inlet pressure in real time; the mode switching module judges four working conditions of idling, cruising, accelerating and pressurizing based on threshold logic; the execution control module calls strategies such as PID (Proportion Integration Differentiation) control and EGR (Exhaust Gas Recirculation) rate calculation aiming at different modes to realize accurate adjustment of parameters such as throttle opening and boost pressure; the diagnosis module monitors faults of the sensor and the actuator in real time through voltage out-of-limit detection, position deviation comparison and temperature correlation analysis.

The present disclosure relates to an air intake module (100) which includes a first sensor (10) for continuously monitoring air temperature and pressure at the intake manifold and generating a first sensed signal. The module comprises a float chamber (22) supplying fuel to a housing (12), which includes a first channel (13) with an air inlet (14) and an outlet (15) delivering an air-fuel mixture to the engine. A second channel (105) and a third channel (107) within the housing facilitate air passage. A throttle slide (51), positioned within the first channel, regulates airflow. A second sensor (108) detects the throttle slide (51) position and generates a second sensed signal. A control unit (134) processes sensed signals and generates an actuating signal. An IACV (146) with a plunger (111) adjusts airflow between the second channel and the third channel in response to the actuating signal, enabling air bypass during idle or low-load conditions.

The present invention provides a control system for a power generation system, comprising a generator coupled to a turbine via a shaft. The control system includes a memory storing instructions. The control system also includes a processor coupled to the memory and configured to execute the instructions. When the instructions are executed, the processor receives a direct current (DC) bus voltage from an automatic voltage regulator (AVR), wherein the AVR is configured to control the voltage characteristics of the generator and determine the speed of the generator based on the DC bus voltage.

Techniques are disclosed herein that provide for controlling torque in a vehicle. In some embodiments, desired torque values are generated and are compared to an amount of torque currently being generated by an engine. If a different amount of torque is desired, an engine speed target is altered in a linear fashion, and then converted back to a torque request to be provided to an engine ECU for implementation. Techniques disclosed herein may cause changes in torque demand to be limited in such a way to cause predictable and smooth changes in engine speed, even when engine speed and torque do not have a linear relationship to each other.

A control device (125) for controlling an engine (102) of a vehicle (103) is disclosed together with a control system (101) comprising a control device (125), a vehicle (103), and a method (200, 500). The control device (125) comprises a control unit configured to cause the power generation of the engine (102) to shut down during movement of the vehicle (103) depending on at least one criterion being met, and to cause the power generation of the engine (102) to restart depending on at least one input signal indicating a need to restart the engine (102) to provide a required power output.The control unit is also configured to receive a target motor speed value that depends on a current drive shaft speed, and causes the motor (102) to maintain a speed not exceeding the target motor speed, which depends on the target motor speed value, for a period after receiving the at least one input signal and until a further signal is received indicating that the motor (102) has been reconnected to a drive shaft (104). The control unit is arranged to allow the motor speed to exceed the target motor speed after receiving the further signal.

The embodiment of the present invention discloses a device power control method and engineering machinery equipment. The method includes: obtaining working parameter information of the target engineering machinery equipment, determining the change of the initial target speed of the engine according to the load rate limit and the load rate in the working parameter information, and adjusting the power load of the target engineering machinery equipment according to the current engine speed and the change in the working parameter information, so as to control the power of the engine in the target engineering machinery equipment. In the embodiment of the present invention, the change of the initial target speed of the engine is determined by the load rate limit and the load rate in the working parameter information, thereby adjusting the power load of the target engineering machinery equipment according to the current engine speed and the change, so as to realize the adaptive adjustment of the engine output power, meet the working conditions such as heavy load, complex and compound action, and ensure the optimal efficiency, fuel consumption and working stability under any working conditions.

The purpose of the present invention is to reduce noise and vibration during the travel of a leaning vehicle including an actuator-driven sequential multi-speed transmission. This leaning vehicle comp

An agricultural system includes a control system. The control system obtains an input value of a characteristic corresponding to a geographic location. The control system further obtains a predictive power model, the predictive power model modeling a relationship between values of the characteristic and values of a power characteristic and configured to receive the input value of the characteristic corresponding to the geographic location and output an output value of the power characteristic corresponding to the geographic location. The control system generates a control signal to control a controllable subsystem of a mobile agricultural machine based on the output value of the power characteristic.

To provide a vehicle control device that can prevent engine exhaust system components from overheating. [Solution] The vehicle includes an engine and a control unit that performs engine revving control, which revs the engine when the accelerator pedal input exceeds a threshold TH1 in a non-driving range. When the time during which the engine revving control has been performed reaches an upper limit time TL, the control unit terminates the engine revving control and stops the engine.

The invention provides an engine rotating speed calculation method, and belongs to the technical field of power control, and the method comprises the steps: collecting and coding the edges of a crankshaft and a camshaft at an eTPU end; fault diagnosis logic is introduced into each acquisition edge of a crankshaft and a camshaft, and acquisition results are divided into four conditions for encoding; crankshaft and camshaft tooth cycle data are collected at the eTPU end and transmitted to the main processor end. Four different rotating speed values are calculated according to the collected periodic data; calibration parameters are introduced, engine control software can flexibly select a rotating speed value calculation source by calibrating the parameters, and different rotating speed values are selected under different working conditions. Accuracy and stability of rotating speed calculation can be improved, and then working efficiency of an engine is improved. Theoretical analysis and experiments show that the rotating speed stability can be effectively improved by using the method, and the engine can still run stably under the condition that the single crankshaft / camshaft is lost suddenly.

A vehicle (1) includes: a driving source (10); a rotation sensor (261) that detects a rotational speed of the driving source; control circuitry (30); and an actuator (40) that operates the driving source. When the rotational speed of the driving source has exceeded a preset upper threshold, the control circuitry executes suppression control that suppressed an output power of the driving source in comparison with before the rotational speed of the driving source exceeds the upper threshold. In the suppression control, the control circuitry gives to the actuator a command that makes the output power of the driving source suppressed in comparison with before the suppression control is executed, in accordance with an excess degree set in relation to an excess time period that is a time period in which the rotational speed of the driving source has exceeded the upper threshold.

A vehicle includes: a driving source; a rotation sensor that detects a rotational speed of the driving source; control circuitry; and an actuator that operates the driving source. When the rotational speed of the driving source has exceeded a preset upper threshold, the control circuitry executes suppression control that suppressed an output power of the driving source in comparison with before the rotational speed of the driving source exceeds the upper threshold. In the suppression control, the control circuitry gives to the actuator a command that makes the output power of the driving source suppressed in comparison with before the suppression control is executed, in accordance with an excess degree set in relation to an excess time period that is a time period in which the rotational speed of the driving source has exceeded the upper threshold.

The invention discloses a vehicle and a control method and device thereof, a controller and a computer storage medium, the vehicle comprises an exhaust gas recirculation valve, and the method comprises the steps that when the exhaust gas recirculation valve has a clamping stagnation fault, the current opening degree of the exhaust gas recirculation valve is obtained; under the condition that the current opening degree is smaller than or equal to the preset opening degree, a target rotating speed and a target load are determined based on the preset opening degree or the preset opening degree and the current opening degree; and controlling the engine according to the target rotating speed and the target load. Therefore, according to the method, under the condition that the exhaust gas recirculation valve has the clamping stagnation fault and the clamping stagnation opening degree is smaller than or equal to the preset opening degree, control over the fixed rotating speed and the fixed load is conducted on the engine, the vehicle can be continuously driven to run based on the engine, and the situation that due to the fact that the vehicle is driven to run only through a motor, the large battery lacks electricity, and the service life of the battery is affected is prevented.

The invention provides a hydrostatic driving method and device for a snow pressing vehicle and a hydraulic system, and relates to the technical field of snow pressing vehicles. The method comprises the steps that the actual rotating speed of an engine is detected and compared with a preset optimal rotating speed range, and a rotating speed deviation signal is generated; based on the rotating speed deviation signal, the displacement adjusting amount of a variable pump and the displacement adjusting amount of a variable motor are calculated through an incremental PID control algorithm; dynamically adjusting the displacement of a variable pump and a variable motor according to the displacement adjusting quantity so as to realize stable control on the rotating speed of the engine; wherein when the load is increased, the variable displacement motor is adjusted to increase the displacement, and if the displacement of the motor reaches the maximum, the variable displacement pump is adjusted to reduce the displacement; when the load is reduced, the variable displacement pump is adjusted to increase the displacement, and if the pump displacement reaches the maximum, the variable displacement motor is adjusted to reduce the displacement. According to the method, the pump and the motor are cooperatively controlled through the incremental PID, the rotating speed of the engine is stabilized, efficient operation of the engine is maintained, and therefore the power utilization rate and the fuel economy are improved.

The invention discloses a soot particle modification method based on in-cylinder combustion regulation of an automobile engine, belongs to the technical field of combustion control of internal combustion engines, and solves the technical problem that the adsorption capacity of soot particles is relatively weak. The method comprises the steps that fossil fuel, oxygen-containing fuel and other fuels with different properties are adopted for engine design of the engine fuel; and then effective control over the combustion process and the combustion path of the engine is achieved by adjusting control parameters such as the air inlet parameter, the oil injection strategy, the operation working condition, the EGR rate and the equivalence ratio of the engine. And finally carrying out carbonaceous test and evaluation on the collected soot particles. The average particle size of the modified soot particles is reduced by 6.3%, the graphitization degree is reduced, and the specific surface area is increased by 39.1%; the pore size distribution range is 2-140nm and belongs to mesopores and macropores, and the total pore volume is increased by 3.5%. This allows the soot particles to have higher oxidation activity and adsorption properties.

A rotary oil electric hybrid engine, which is an engine with a completely new structure. Taking the example that the inner rotor is connected to the power output shaft, regarding the structural features, the outer rotor cylinder and the inner rotor axis form an annular chamber. The outer rotor blades and the inner rotor blades divide the annular chamber into a combustion chamber and a buffer chamber. The outer rotor and the inner rotor rotate in the same direction within the range of the change angle difference within the circumferential angle. Regarding the operating characteristics, when starting cold, the gas in the combustion chamber is exhausted. The numerical control motor is interlocked with the bumps of the limit ring, meshes the inner rotor and the outer rotor, rotates them at the same speed, and reaches a high rotational speed. During the intake stroke, the numerical control motor decelerates to drive the outer rotor to decelerate. Inertia increases the angle difference between the inner rotor and the outer rotor to realize the intake stroke. The numerical control motor accelerates to catch up and reduces the angle difference between the inner rotor and the outer rotor to realize the compression stroke. The total mass of the numerical control motor, the inertial flywheel and the outer rotor is much larger than the mass of the inner rotor, providing a reaction force rotating in the same direction during the expansion work stroke. The numerical control motor accelerates to catch up and reduces the angle difference between the inner rotor and the outer rotor to complete the exhaust stroke and enter the cycle.