78 results about "Idle speed control" patented technology

The invention provides a fuel cell system and a low idle speed control method thereof, and belongs to the technical field of fuel cells. The fuel cell system comprises an electric pile and accessory equipment, the accessory equipment comprises an air compressor, an intercooler, a humidifier, an expansion machine and a regulating valve, and the regulating valve comprises a bypass valve and a pile entering stop valve; filtered air enters the cathode input end of the electric pile through the air compressor, the intercooler, the humidifier and the pile entering stop valve in sequence, the first output end of the intercooler is connected with the input end of the expansion machine through the bypass valve, and the expansion machine and a motor of the air compressor coaxially rotate. The low idle speed control method comprises the following steps: controlling accessory equipment to operate in a lowest power consumption mode, and then obtaining load current of a galvanic pile and the opening degree of a regulating valve; and carrying out iterative adjustment on the load current of the electric pile and the opening degree of an adjusting valve by taking the voltage parameter value of the electric pile meeting a preset condition as a target, so as to carry out low-idle-speed control on the fuel cell system. According to the invention, low-power and high-efficiency operation of the fuel cell system can be realized, and energy loss is reduced.

The invention discloses a method for optimizing steering idle speed control of an oil pump motor of a counterbalance forklift truck, relates to the technical field of motor control, and solves the problems that the rotating speed of a motor is obviously lower than a set idle speed and steering is delayed or shaken due to sudden load increase of a hydraulic system at the moment of steering. The steering idle speed control optimization method comprises the steps that the steering feedback idle speed and the steering oil pressure are collected, the steering idle speed falling difference value is calculated according to the preset steering idle speed, and a load dynamic model is established; judging the duration time of the steering idle speed drop difference value, and obtaining the control torque of an oil pump motor by utilizing a composite proportional-integral controller in combination with the steering oil pressure; a torque conversion coefficient is calculated through a third-order nonlinear observer and a temperature compensation coefficient according to steering oil pressure collected by a hydraulic sensor, and then offset torque is obtained; and the control torque and the offset torque of the oil pump motor are calculated according to an idling dynamic weight distribution strategy and then input into the heavy forklift to control the oil pump motor to complete steering idling optimization.

The invention relates to the technical field of hybrid power mine cars, and discloses a shutdown control method and system for a range extender of a hybrid power mine car, and the method comprises the steps: generating and transmitting an engine shutdown signal when the battery SOC data of the mine car reaches a preset safety threshold value; executing a corresponding load regulation and control strategy based on the engine stop signal in combination with the engine temperature of the current mine car so as to reduce the engine load power; reducing the engine temperature by reducing the engine load power level to idle speed operation and combining a preset idle speed control strategy; dynamically adjusting the output power of the generator through a preset adjustment strategy based on the real-time battery SOC data; engine shutdown is monitored and confirmed, and the state information of the mine car during shutdown is recorded, so that subsequent starting is facilitated. By comprehensively considering the battery state, the engine temperature and the mine car working condition, intelligent control over the hybrid power mine car in the shutdown control process is achieved, and the reliability and safety of the system are improved.

The embodiment of the invention provides a target idle speed value determining method and device, a vehicle controller and a storage medium, and relates to the technical field of vehicle control. The method comprises the steps that if starting operation of an engine is detected, a cooling liquid temperature value and an external atmospheric pressure value of the engine are obtained, and a basic target idle speed value of the engine is determined according to the cooling liquid temperature value and the external atmospheric pressure value of the engine; if the mark signal of the target idle speed mark bit is detected, acquiring an acceleration idle speed value in the current idle speed acceleration request; a first target idle speed value is determined according to the basic target idle speed value and the acceleration idle speed value of the engine; by the adoption of the technical scheme, the rotating speed of the engine is stabilized by activating idling control, stable operation of the engine under the idling working condition is guaranteed, the engine can stably work at the minimum target idling speed, and oil consumption and emission are reduced to a great extent.

The invention provides a tail gas control method, device, equipment and medium for an extended-range vehicle, and relates to the technical field of automobile tail gas treatment and emission control, the idle speed duration of a vehicle engine is determined according to the temperature of the engine and the state of a front oxygen sensor, so that the idle speed duration of the engine better conforms to the current vehicle state, and the service life of the vehicle is prolonged. The accuracy and effectiveness of idle speed control are remarkably improved, and the exhaust emission level is further reduced. The method comprises the steps that the engine temperature and the front oxygen sensor state of a current vehicle are obtained; determining idle speed duration of a vehicle engine based on the engine temperature and the state of the front oxygen sensor; and the vehicle engine is controlled to enter a power generation working condition after running at the idle speed for the idle speed duration.

The application discloses a hybrid engine idle speed control method and device, a controller and a storage medium. The method comprises the following steps: obtaining an idle speed demand torque by using a PID adjustment method based on an idle speed target speed required by an engine and an actual engine speed obtained; processing the idle speed demand torque to obtain a dynamic part torque and a static part torque; processing the dynamic part torque and the static part torque based on a preset demand torque distribution method to obtain an engine total demand torque and a motor total demand torque; and controlling the engine and the motor to idle based on the engine total demand torque and the motor total demand torque. The application can solve the problem that the engine emission and fuel consumption are difficult to balance in the related art.

This invention relates to an intelligent engine idling speed control method and system, belonging to the field of automotive control. The method reads the current operating status of the vehicle's electrical appliances and matches them against a pre-established appliance combination matrix. If a match is found with any combination in the matrix, the engine idling speed is not increased. The appliance combination matrix includes several combinations, each containing several non-operating appliances. When all appliances in a combination except the non-operating ones are running, the total power consumption does not exceed the power generation when the engine idling speed is not increased. A successful match is considered achieved when the non-operating appliances in the current vehicle's electrical appliances completely match the non-operating appliances in the corresponding combination. If a successful match is found, the engine's power generation is not increased, thus reducing the probability of the engine increasing its speed and lowering the vehicle's fuel consumption.

This application provides an engine idling speed control method, storage medium, and vehicle for a hybrid vehicle, belonging to the field of vehicle control technology. The embodiments of this application identify the triggering mode of the engine idling condition, enabling the matching of a corresponding target proportional-integral (PI) control strategy based on the triggering mode. Based on the target PI control strategy, the PI adjustment torque of the electric motor is determined, effectively meeting the engine idling speed control requirements under various idling conditions. Simultaneously, based on the PI adjustment and combined with the current engine speed difference, torque compensation for the electric motor can be achieved. Then, based on the PI adjustment torque and the compensation torque, the first motor execution torque is determined, and the motor is controlled to output torque according to the first motor execution torque. Utilizing the rapid response characteristics of the electric motor, rapid and stable control of the engine idling speed is achieved.

The invention discloses a vehicle control method, electronic equipment and a vehicle, and relates to the technical field of hybrid power control, and the method comprises the following steps: obtaining a first vehicle data set of the vehicle; the first vehicle data set comprises a first vehicle body stability parameter, vehicle driving mode information and vehicle operation data; the vehicle operation data comprises at least one of vehicle speed, power battery state parameters, clutch working state parameters, engine operation parameters and driver operation intention parameters; based on the first vehicle data set, whether the vehicle meets a to-be-activated condition of controlling idle speed through an engine or not is judged, and when the to-be-activated condition is met, whether the vehicle is in a prohibition condition of controlling idle speed through the engine or not is verified; if not, the vehicle engine is triggered to start the idle speed control function, and the vehicle is controlled to be in the target idle speed state through the idle speed control function of the engine. The precision of idle speed control of the hybrid vehicle can be improved.

The application provides a fuel cell system and a low-idling control method thereof, and belongs to the technical field of fuel cells. The fuel cell system comprises a stack and accessory equipment, the accessory equipment comprises an air compressor, a intercooler, a humidifier, an expander and a regulating valve, the regulating valve comprises a bypass valve and an inlet valve, filtered air enters a cathode input end of the stack in sequence through the air compressor, the intercooler, the humidifier and the inlet valve, a first output end of the intercooler is connected with an input end of the expander through the bypass valve, and the expander rotates coaxially with a motor of the air compressor. The low-idling control method comprises the following steps: controlling the accessory equipment to operate in a minimum power consumption mode, then acquiring a pull current of the stack and an opening degree of the regulating valve; and taking a voltage parameter value of the stack meeting a preset condition as a target, iteratively adjusting the pull current of the stack and the opening degree of the regulating valve, so as to control the fuel cell system in a low-idling mode. The application can realize low-power and high-efficiency operation of the fuel cell system and reduce energy loss.

The invention provides an engine idle speed control method and system, a vehicle and a medium, and belongs to the technical field of automobile control. When it is determined that a preset activation condition is met according to the information of the engine and the related data of the fan, idle speed increasing operation on the engine is executed; the idle speed increasing operation comprises the steps of determining a target idle speed based on the water outlet temperature of an engine and the current atmospheric pressure, and controlling the rotating speed of the engine to be adjusted to the target idle speed; and after the idle speed increasing operation is executed, when it is determined that a preset exit condition is met, idle speed increasing control over the engine is stopped. The starting noise of the vehicle is effectively reduced, and the driving comfort and safety are improved.

The embodiment of the invention discloses an idle speed control method and device of a fuel cell system, equipment and a medium, and relates to the technical field of fuel cell systems. The method comprises the following steps: if an instruction for indicating the fuel cell system to enter an idle running state is received, controlling a target accessory to enter an enabling state; determining the total operation power of the target accessory in the enabled state as the operation power of the electric pile, and controlling the electric pile based on the operation power of the electric pile; inputting the difference value between the voltage safety value and the actual value of the single cell of the electric pile into a proportional integral controller to obtain the opening degree of an air inlet pile stop valve, and controlling the air inlet pile stop valve and an air bypass valve according to the opening degree of the air inlet pile stop valve; the duty ratio of the hydrogen injection valve is determined according to the amount of air actually entering the electric pile, and the hydrogen injection valve is controlled according to the duty ratio. According to the technical scheme, when the fuel cell system is in an idling running state, the fuel consumption is reduced while the external output power is zero.

The invention relates to an engine idle speed control method and device, a vehicle and a computer storage medium, and belongs to the technical field of engine control. The engine idle speed control method comprises the steps that operation parameters of a generator are obtained, and the load coefficient of the generator is calculated based on the operation parameters; when the load coefficient is larger than a first load coefficient threshold value, the idle speed of the engine is adjusted to the highest rated idle speed; when the load coefficient is larger than a second load coefficient threshold value and smaller than or equal to the first load coefficient threshold value, a target idle speed is determined based on the priority of electric equipment, and the engine idle speed is adjusted to the target idle speed; and when a pre-closing signal of the electric equipment is received, the pre-falling rotating speed after the electric equipment is closed is calculated, and the idle speed of the engine is adjusted to the pre-falling rotating speed. Accurate control over the idle speed of the engine can be achieved, and the running stability of the engine is improved.

The invention relates to the technical field of vehicle idle speed control, and provides an idle speed control method and device of a hybrid vehicle. The method comprises the following steps: acquiring actual working condition parameters of an engine of the hybrid vehicle in an idling state; according to the actual working condition parameters of the engine and the idling required power of the hybrid vehicle in the idling state, target working condition parameters of a generator of the hybrid vehicle are determined; and controlling the generator according to the target working condition parameter of the generator. According to the idle speed control method of the hybrid vehicle, the reliability of idle speed control of the hybrid vehicle can be improved.

The invention discloses a range extender zero fuel idle speed control method and system. The method comprises the steps that a power battery SOC value, a power generation request state and a mechanical accessory work request state are obtained; if the SOC value of the power battery is not lower than the first electric quantity value, no power generation request exists and at least one mechanical accessory working request exists, a pure electric dragging mode is entered, the engine is controlled to stop oil injection, the target torque is zero, the generator drags the engine to rotate at the first target rotating speed not lower than the engine idle speed, and the corresponding mechanical accessory is driven to operate; therefore, pure electric driving of mechanical accessories is achieved under the condition that independent electric accessories are not additionally arranged. Wherein the first electric quantity value is the minimum electric quantity value meeting the requirement of entering a pure electric drag rotation mode; the first target rotating speed is a rotating speed value meeting the working requirement of the corresponding mechanical accessory.

The invention relates to the technical field of idle speed control, and discloses an engine electro-hydraulic control automatic idle speed system and method and an engineering van. A first pressure switch and a second pressure switch are connected with a hydraulic system, and the first pressure switch is used for controlling connection of a first pressure oil port and a third working oil port of a three-position four-way electromagnetic valve; the second pressure switch is used for controlling conduction of a first pressure oil port and a fourth working oil port of the three-position four-way electromagnetic valve, the hydraulic system feeds oil into the first oil cylinder through the first pressure oil port and the third working oil port, a piston in the first oil cylinder pushes an engine throttle to move towards an idling position, and discharged oil enters the oil storage oil cylinder through a cavity port. The hydraulic system feeds oil into the oil storage oil cylinder through the first pressure oil port and the fourth working oil port, so that a piston in the oil storage oil cylinder moves, the received oil discharged by the first oil cylinder flows back to the first oil cylinder, quantitative control over oil inlet and outlet in an oil cylinder cavity is achieved in an electro-hydraulic combination mode, and consistency of the reciprocating position to the piston is achieved.

The invention relates to the field of vehicle control methods, in particular to a torque control-based one-key rotating speed increasing and idle speed control method, which comprises the following steps of: judging whether a vehicle meets a PTO (Power Take Off) starting control condition or not; performing PTO target rotating speed control of the engine according to whether the PTO is started or not; pTO rotating speed closed-loop control is carried out, and after the PTO is started, the maximum value of the PTO target rotating speed and the idling target rotating speed serves as the target idling speed of the engine for control; pTO torque control is carried out, a static torque value and a dynamic torque value are obtained, and when the request signal is started, the torque of the refrigeration compressor is the combined action of the static torque and the dynamic torque and is kept according to the keeping time; and the PTO starts idling torque control, in the PTO activation state, the idling torque is kept near 0, the idling torque learning value is kept within + / -2%, and meanwhile coordinated control is conducted in cooperation with the ignition angle and the fuel injection quantity. Stable operation of the engine can be maintained, oil consumption is reduced, driving safety risks caused by flameout of the vehicle are prevented, and more comfortable driving experience is achieved.

The air inlet system of the engine comprises a throttle valve and an idle speed control valve, the idle speed control valve is provided with an air inlet and a plurality of air outlets, two air inlet pipes are communicated with the throttle valve, and the two air inlet pipes are communicated with air inlet channels of two air cylinders in a one-to-one correspondence mode. The plurality of air outlets are communicated with different positions of the air inlet pipe of the air cylinder with the short ignition time sequence; according to the air inlet system of the engine and the engine, the idle speed control valve is provided with the air outlets, the air outlets are all communicated with the air inlet pipe of the air cylinder with the short ignition time sequence, the air inlet amount can be distributed, and the probability that the cylinder body of the engine with the short ignition time sequence is on fire during idle speed is reduced.

The invention provides an active safety system based on an engineering machinery instrument panel. Comprising an instrument panel, a processor is arranged in the instrument panel, the processor is connected with cameras arranged around the whole machine equipment, and the cameras transmit shot pictures to the processor for synthesis; the processor is further connected with an engine controller and a whole vehicle controller, the engine controller is connected with a whole vehicle idling control module and a whole vehicle flameout control module, and the whole vehicle controller is connected with a whole vehicle hydraulic action control module and a whole vehicle walking control module. Through sound and color alarm modes of an engineering machinery instrument panel, fusion means such as a sensor technology, a graphic synthesis technology and a control technology are effectively utilized, the surrounding environment of operation of engineering machinery equipment is monitored in real time, accident risks are actively recognized, sudden accidents of an engineering equipment construction site are effectively reduced, and secondary damage is prevented.

To provide a work vehicle idling control system capable of efficiently performing a work.SOLUTION: A work vehicle idling control system 1 is a system for controlling idling of a work vehicle 10. The work vehicle idling control system 1 includes an idling control section 30 that executes an idling operation after start of an engine. In the stopped state of the work vehicle where pressure oil is not transmitted to at least a travel device and a work device of the work vehicle 10 after start of the engine, when a temperature of engine cooling water is a predetermined temperature or lower, the idling control section 30 increases engine speed.SELECTED DRAWING: Figure 2

The application relates to a vehicle idle speed control method, device, equipment, storage medium and vehicle, and relates to the technical field of automobiles. A target demand power corresponding to a target vehicle under a target environment temperature is determined, the target demand power is used to indicate the power demand of the engine when the power of the target vehicle is increased from the current residual power to the target residual power; based on the target demand power, a target power generation torque load parameter corresponding to the target vehicle is determined; based on the target power generation torque load parameter and a state parameter of the target vehicle, idle speed control of the target vehicle is realized, and the state parameter of the target vehicle comprises at least one of the following: an engine comprehensive resistance torque, an engine target idle speed, an engine current idle speed, and the engine target idle speed is an adjusted idle speed. Therefore, the problem of unstable vehicle idle speed caused by the influence of temperature change on power generation load can be avoided, and the idle speed stability of the vehicle is improved.

The invention provides an engine idling working condition control method, device, storage medium and system, and relates to the technical field of engine control, the method comprises the steps that a feed-forward value of an engine is obtained, and the feed-forward value represents the average throttle opening degree required by the engine to maintain a preset target rotating speed under a preset idling working condition; under the condition that the feed-forward value is greater than a preset feed-forward value, determining a first condition that the engine enters a non-idle working condition according to the feed-forward value and the preset feed-forward value, and determining a first minimum value of an integral term output by a PID (Proportion Integration Differentiation) controller; and according to the first minimum value and a first condition that the engine enters the non-idle working condition, a first throttle opening target value is determined, and the throttle opening is controlled according to the first throttle opening target value. According to the method, the problem that in the prior art, when the air inlet pipe is under special operation conditions such as low-temperature icing and subsequent rapid deicing, an integral item of PID control can be reset in advance, and consequently idling control is not stable is solved.

The application discloses a kind of vehicle idle speed control method, device and hybrid vehicle.Therein, the method includes: based on the vehicle control information of target vehicle, determine that target vehicle enters idle speed control state;In idle speed control state, in response to the current battery capacity of target vehicle is higher than first threshold value, according to first control instruction, motor speed control is carried out to target vehicle, and in response to current battery capacity is lower than second threshold value, according to second control instruction, motor speed control and engine torque control are carried out to target vehicle;Wherein, first control instruction is determined by the first target idle speed corresponding to target vehicle in electric drive state, and second control instruction is determined by the second target idle speed and target idle torque corresponding to target vehicle in hybrid drive state.The present application solves the technical problem that the accuracy of the vehicle idle speed control method provided by the related art is low and the overall vehicle comfort is poor.

The present invention relates to a fuel cell system. When an ECU (100) of a fuel cell system (10) receives a signal related to stopping power generation of a fuel cell stack (12) during operation of a mobile body (11), the ECU (100) determines whether temperature information exceeds a temperature threshold (Tt) for determination. When the temperature information exceeds the temperature threshold (Tt) for determination, the ECU (100) performs a stop control to stop power generation of the fuel cell stack (12). On the other hand, when the temperature information is below the temperature threshold (Tt) for determination, the ECU (100) performs an idle speed control to cause the fuel cell stack (12) to generate power at a power consumption less than that of an air pump (68).

The invention discloses a self-adaptive automatic idle speed control method which comprises the following steps: firstly, judging whether a complete machine does not work or not, and if the complete machine works, directly ending and not entering an idle speed working condition of an engine; if the whole engine does not work, whether the engine is in an automatic regeneration state or not is judged, if the engine is in the automatic regeneration state, the engine is directly ended, and the engine does not enter the idling working condition, and if the engine is not in the automatic regeneration state, the engine enters the idling working condition; when the engine rotates at the idle speed, self-adaptive idle speed adjustment is achieved, oil consumption is saved, and meanwhile the situation that the heat dissipation performance is reduced, the cooling effect of the air conditioner is affected, or regeneration is affected during automatic regeneration can be prevented.

The invention relates to an engine idle speed control method and device, a vehicle and a computer storage medium, and belongs to the technical field of engine control. The engine idle speed control method comprises the steps that when an engine is in an idle speed working condition, the real-time temperature value of a cab is obtained; determining an engine idle speed target value based on the cab real-time temperature value and a preset cab target temperature value; and on the basis of the engine idle speed target value, the engine idle speed is controlled through a closed-loop PID control algorithm combined with feedforward control, so that the error between the cab real-time temperature value and the cab target temperature value is within a preset range. According to the method, large fluctuation of the controlled idle speed can be avoided, meanwhile, the controlled idle speed value can be reduced by setting the temperature difference, and the economical efficiency of the whole vehicle is better.

The invention provides a vehicle control method and a vehicle, and the method comprises the steps: responding to the starting of an engine and receiving an idle speed control request, enabling the engine to enter an idle speed working condition, and controlling the idle speed through an ECM at the moment. If it is determined that the started duration is smaller than the preset holding duration, the engine is controlled to output first load torque; wherein the first load torque is smaller than or equal to the initial load torque of the engine. Equivalently, in the preset holding time, compared with the initial load torque, the load torque output by the engine is reduced, the stability of the idling rotating speed can be maintained in the initial starting stage of the engine, and the driving experience of a user is improved. If it is determined that the vehicle meets the preset torque recovery condition, it shows that the engine has reached a relatively stable state after running for a period of time, and at the moment, the output torque of the engine can be controlled to be increased from the first load torque to the initial load torque, so that the load requirement of the vehicle is met.

The invention provides a method for dynamically adjusting a score based on a driving behavior of a commercial vehicle. The method comprises the following steps: S1, a data acquisition module acquires original vehicle operation data according to an acquisition frequency; s2, sending the original vehicle operation data to a data processing module; s3, the data processing module sends the standardized key driving behavior characteristic data to a score calculation module; s4, the score calculation module calculates a driving behavior score according to the feature data; s5, the score calculation module sends a score result to the client platform; according to the invention, the total score of the driver in four aspects of vehicle speed control, accelerator control, idle speed control and brake control is calculated according to the score calculation module, and then the dynamic environment weight model is used to dynamically adjust the total score according to the driving environment change dynamic adjustment environment, so that the obtained driving behavior score is more real and comprehensive, and the driving behavior score is more accurate. And a more scientific and objective basis is provided for motorcade management.

The invention discloses a throttle valve mechanism of a V-shaped engine, and relates to the technical field of motorcycle engines, the throttle valve mechanism comprises a first intake valve and a second intake valve, throttle valve sheets are rotatably arranged in ports of the first intake valve and the second intake valve, and the throttle valve sheets are used for controlling the opening degree of the first intake valve and the second intake valve; the first air inlet manifold and the second air inlet manifold communicate the first air inlet valve and the second air inlet valve with all the air cylinders, the ends, connected with the air cylinders, of the first air inlet manifold and the second air inlet manifold are bent in the direction away from each other, and inner cavities of the first air inlet manifold and the second air inlet manifold communicate with the idle speed control valve and the oil tank through a breather pipe and an oil rail pipe set correspondingly; the technical problems that an existing single-valve throttle valve cannot stably supply air to two air cylinders, so that the output efficiency of an engine is affected, and a double-valve throttle valve is large in transverse size and prone to interference with an engine cylinder head, so that the double-valve throttle valve is difficult to install are solved.

The system (36) for controlling an aircraft thrust reverser comprises a reverse idle control device (38), a first detection device (31) configured to detect a condition for activating the thrust reverser when the reverse idle control is activated, and an actuation device (52) configured to activate the thrust reverser when the first detection device (31) detects the condition for activating the thrust reverser. The system further comprises a second detection device (42, 44, 46, 48, 49) configured to detect a condition for activating the reverse idle control, and the control device (38) configured to activate the reverse idle control when the second detection device (42, 44, 46, 48, 49) detects the condition for activating the reverse idle control.