208results about "Automatic control with electric engine control" patented technology

A precombustion chamber igniter with a retractable electric glow plug and a cold start control method for a methanol engine are provided. The precombustion chamber igniter includes a fuel injector, a spark plug, and an electric glow plug. The electric glow plug is retractable and has two working positions, at a first position, a heating segment is wholly located in an injection chamber to provide heat energy for the injection chamber, and at a second position, the heating segment is partially located in the injection chamber and passes through a first through hole, and the rest of the heating segment is located in a main combustion chamber of an engine, to provide heat energy for the injection chamber and the main combustion chamber. In a cold start stage of the engine, the heating segment of the electric glow plug is controlled to be located at the second position.

A system for detecting a source of a misfire for a turbulent jet ignition (TJI) engine having a first ignition device disposed in a pre-chamber of a cylinder head and a second ignition device disposed for communication with a main combustion chamber is presented. The system includes a controller that determines engine operating conditions; generates a first spark from the first ignition device at a first time; generates a second spark from the second ignition device at a second time; activates a skipfire mode based on a determination that the engine operating conditions are satisfactory, wherein in the skipfire mode, the controller generates a modified second spark at a modified second time, the modified second time being later than the second time; and determines a misfire event based on sensing ionization of gasses at the main combustion chamber subsequent to firing the first and second ignition devices.

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.

A vehicle control system (S) is provided with: a front situation detection device (200) that detects a situation in front of a vehicle (1); a vibration source (20) that generates vibrations to be transmitted to a driver of the vehicle (1); and a control unit (150) that performs control for changing the state of the oscillation of the oscillation starting source (20, 20 ', 51, 53, 63, 75) to a state corresponding to the degree of urgency in accordance with the degree of urgency obtained using information detected by the forward condition detection device (200).

The invention provides an engine control method and device, a computer readable storage medium and a vehicle. The method comprises the steps that under the condition that an engine is in an idling working condition, the opening degree of an exhaust gas recirculation valve of the engine and the opening degree of a throttle valve of the engine are adjusted to the corresponding preset opening degrees correspondingly; the idling working condition is the working condition of non-load operation of the engine; after the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are adjusted to the corresponding preset opening degrees correspondingly, the pressure of an intake manifold of the engine is obtained; under the condition that the pressure of the intake manifold is smaller than or equal to the pressure threshold value, the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are increased, so that the pressure of the intake manifold is larger than the pressure threshold value, and the problem that in the prior art, the engine oil consumption generated by pumping engine oil is high due to the fact that the pressure of the intake manifold is low under the engine idling working condition is solved.

The invention discloses an engine combustion system based on methanol fuel, and belongs to the technical field of engines, and the system is characterized in that a first outlet of a methanol storage tank is communicated to a gas inlet channel methanol nozzle of a main combustion chamber; a second outlet of the methanol storage tank is communicated to a first inlet of the waste gas heat exchanger, and is communicated to a first inlet of the methanol reformer through a first outlet of the waste gas heat exchanger; a first outlet of the methanol reformer is communicated to a gas inlet channel reformed gas nozzle of the main combustion chamber and a pre-combustion chamber reformed gas nozzle; an exhaust pipe outlet of the main combustion chamber communicates with a second inlet of the waste gas heat exchanger so as to communicate with a second inlet of the methanol reformer through a second outlet of the waste gas heat exchanger. Waste gas waste heat is used for methanol vaporization and reforming reaction, hydrogen-rich reformed gas is generated, the waste gas waste heat is efficiently utilized, the energy utilization rate is increased, the reformed gas is introduced into the pre-combustion chamber and the main combustion chamber, jet flow ignition energy is enhanced, in-cylinder combustion is accelerated, and the combustion efficiency is improved.

To prevent backfire of an engine due to unintended discharging in an ignition plug at low cost, without generating a positive voltage during ignition coil charging, in a spark ignition hydrogen engine.SOLUTION: A control device of a spark ignition hydrogen engine sends, to an igniter of an ignition device, a main discharge ignition signal to ignite hydrogen mixture, and an auxiliary discharge ignition signal to reduce an open-circuit voltage of a secondary coil during an intake stroke compared to an open-circuit voltage at the end of main discharge. Therefore, it is possible to set the open-circuit voltage during the intake stroke to the minimum value of a breakdown voltage in the spark ignition hydrogen engine to prevent backfire of the engine.SELECTED DRAWING: Figure 8

To reliably improve a fuel consumption performance and an exhaust gas performance in an engine system having a main combustion chamber and an auxiliary chamber.SOLUTION: An engine system 1 comprises an injector 28 for injecting fuel to a main consumption chamber 26, a main ignition plug 32 for mainly igniting air-fuel mixture of the main combustion chamber 26, and an ECU 100 electrically connected to an auxiliary ignition plug 62 for auxiliary igniting the air-fuel mixture in an auxiliary chamber 60, and outputting control electric signals to each device. The ECU 100 performs control for executing the auxiliary ignition after the main ignition is executed in a low load area where, an engine load is equal to or less than a prescribed reference load, and retarding a timing of the auxiliary ignition compared with a low rotation area not higher than a predetermined reference speed (N1) in a high rotation area with an engine speed higher than the reference speed.SELECTED DRAWING: Figure 7

The invention discloses an ignition control method, device and equipment for a dual-fuel engine and a storage medium. The ignition control method comprises the steps that the engine rotating speed and the engine torque are obtained; determining engine working conditions according to the engine speed or the engine torque; and controlling a spark plug and / or a dual-fuel injector to start according to the engine working condition, the engine rotating speed and the engine torque. According to the technical scheme, the engine rotating speed and the engine torque are obtained, the engine working conditions are determined according to the engine rotating speed or the engine torque, the spark plug and / or the dual-fuel injector are / is controlled to be started according to the different engine working conditions, and different ignition strategies are executed; flexible switching of different ignition modes of spark plug ignition and compression ignition is achieved, and the abnormal combustion problems of CO2 emission, early-burning explosion and the like of the dual-fuel engine are effectively solved.

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.

An engine system (S) includes an internal combustion engine (1) and a control unit (100). The internal combustion engine includes: a main chamber (5) defined by a piston (2), a cylinder (3), and a cylinder head (4); a spark plug (10) mounted on the cylinder head; a secondary chamber tube (11) surrounding the spark plug and protruding downward from the cylinder head; a secondary chamber hole (17) formed in the piston and capable of receiving the secondary chamber tube; and an injector (9) for injecting fuel supplied into the main chamber. The control unit ignites the spark plug when the secondary chamber tube is inserted into the secondary chamber hole, and injects fuel from the injector before the spark plug is ignited and before the secondary chamber tube is inserted into the secondary chamber hole.

An ignition system (10) including an injection member (20) configured to deliver fuel to an ignition zone (140) within a combustion chamber, an ignition element (40) configured to ignite fuel within the ignition zone, and a control unit (60) configured to operate the injection member and the ignition element in a first ignition phase including ignition of a first delivery of fuel provided to the combustion chamber by the injection member and a second ignition phase including ignition of a second delivery of fuel provided to the combustion chamber by the injection member.

The invention discloses a multi-fuel generator set control system, a control method thereof and a generator set, which are applied to the technical field of generator sets, the multi-fuel generator set control system comprises a multi-fuel generator set and a control system, the control system comprises a fuel change-over switch, an engine starting switch, a carburetor, a fuel gas supply electric control valve, a signal detection module, an ignition device and a control device; a gas fuel supply pipeline of the multi-fuel engine is connected with a gas inlet of the gas supply electric control valve, and a gas outlet of the gas supply electric control valve is connected with a gas fuel inlet of the carburetor. And the signal input end of the fuel type detection circuit is connected with the fuel change-over switch. The temperature sensor is used for detecting a cylinder body temperature signal of the fuel engine and compensating the injection amount of the gas fuel according to the cylinder body temperature signal of the engine. The temperature sensor is used for monitoring the temperature of the cylinder body of the engine in real time, the injection amount of the gas fuel is compensated according to the temperature of the cylinder body of the engine, and the combustion condition in the engine heating process of the engine is stabilized.

This method for heating a three-way catalytic converter (13) mounted at the exhaust of a combustion engine (2) associated with a first electric machine capable of operating in a generator mode or in a motor mode, in which modes said electric machine participates in the drive torque of the vehicle, and associated with a second electric machine capable of operating at least in a generator mode, comprises: - a step of starting the vehicle in which a drive torque of the vehicle is required; and - a step of heating the catalytic converter (13) to a light-off temperature, in which the drive torque of the vehicle is produced entirely by the first electric machine. Said heating step comprises a step of adjusting the post-combustion of the engine (2) comprising a step of injecting fuel into at least one cylinder of the engine (2) around the top dead centre of combustion, followed by an ignition step around the bottom dead centre of exhaust.

The present application relates to an engine control method, device, unit and storage medium, and relates to the field of automotive technology. The method includes obtaining the current combustion stability value of the engine after the engine has been running at a target operating condition for a preset time. The current combustion stability value is used to characterize the combustion stability of the engine within the preset time. When the current combustion stability value is less than the combustion stability limit corresponding to the target operating condition, a first control strategy is executed; the first control strategy includes adjusting the current exhaust gas recirculation (EGR) rate to a first EGR rate, and, when the engine torque is controlled to be within a preset torque range, adjusting the current ignition advance angle to a first ignition advance angle; the first EGR rate is greater than the current EGR rate, and the first ignition advance angle is greater than the current ignition advance angle. In this way, the EGR rate of the engine under steady-state conditions can be increased, and fuel consumption can be reduced.

The invention relates to a method for injecting an oxidant-fuel gaseous fuel mixture (1) of a pilot charge (39) into an ignition prechamber (2), the method consisting in measuring the angular position of a crankshaft (7); then using an electric fill current profile (22) which imposes a fill lift law (23) on a gaseous fuel mixture injector (9) that opens into the prechamber (2); using an overlap variable (25) which sets the offset between the ignition (41) of the pilot charge (39) in the ignition prechamber (2) and the end of injection of the charge (39); using a variable for triggering the electric fill current profile (26); and using a richness variable (27) in order to generate, for each operating point of an internal combustion engine (4), an injection data set (28), and then to execute the set (28).

To stabilize an engine rotation speed after cold start at the time of using heavy fuel at an early stage while suppressing a total amount of emission of fine particle substance.SOLUTION: An engine ECU decides a final ignition timing on the basis of a catalyst warming-up delay angle amount for promoting warming up of a catalyst, and a rotation speed correction advance angle amount as an advance angle amount for raising an engine rotation speed after starting. Further, when at least one of a first condition that the final ignition timing is nearer to a delay angle side than a specified value after a compression upper dead point and a second condition that the rotation speed correction advance angle amount is a predetermined advance angle amount threshold value or more is satisfied, a cylinder injection valve is controlled so that a required fuel injection amount is injected while being divided into a plurality of times and also atomization formed by a latest final fuel injection of the fuel injection divided into a plurality of times is ignited by a spark of an ignition plug.SELECTED DRAWING: Figure 1

An ignition system including an injection member configured to deliver fuel to an ignition zone within a combustion chamber, an ignition element configured to ignite fuel within the ignition zone, and a control unit configured to operate the injection member and the ignition element in a first ignition phase including ignition of a first delivery of fuel provided to the combustion chamber by the injection member and a second ignition phase including ignition of a second delivery of fuel provided to the combustion chamber by the injection member.

Method for an engine (10), comprising: in response to a condensate level in a charge air cooler (166), increasing engine airflow more than requested by a vehicle operator (132) without increasing engine torque by adjusting an engine actuator to maintain torque.

The application provides a control method and device of an engine, a computer readable storage medium and a vehicle. The method comprises the following steps: adjusting the opening degree of an exhaust gas recirculation valve of the engine and the opening degree of a throttle valve of the engine to corresponding predetermined opening degrees respectively when the engine is in an idle operating condition, wherein the idle operating condition is an operating condition in which the engine is in no-load operation; obtaining the pressure of an intake manifold of the engine after the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are adjusted to the corresponding predetermined opening degrees respectively; and increasing the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve when the pressure of the intake manifold is less than or equal to a pressure threshold, so that the pressure of the intake manifold is greater than the pressure threshold. The application solves the problem of high oil consumption caused by pumping oil due to low intake manifold pressure of the engine in the idle operating condition in the prior art.

The invention discloses a hydrogen fuel automobile engine start-stop control system and method and an automobile. The control system comprises a hydrogen fuel engine, a hydrogen supply device, a whole automobile controller, a hydrogen fuel engine controller and a hydrogen supply device controller. The method comprises the steps that firstly, when a starting signal is received, a valve opening signal is sent to a hydrogen supply device controller, so that a hydrogen supply device conveys hydrogen to an intake manifold of the hydrogen fuel engine through a hydrogen conveying pipeline; and when the ignition signal is received within a preset time period after the starting signal is received, the hydrogen fuel engine is controlled to be started, and when the ignition signal is still not received after the preset time period after the starting signal is received, the electromagnetic valve is controlled to be closed. According to the technical scheme, the electromagnetic valve is controlled to be closed if the ignition signal is still not received after the preset time period after the starting signal is received, so that explosion accidents possibly caused by long-time conveying of hydrogen in a non-starting state are avoided, and the safety performance of the automobile is further improved.

An engine combustion control system includes an ignition coil, an igniter which induces high voltage in the ignition coil to cause electric discharge between plug electrodes of an engine spark plug, a bias voltage generator which applies bias voltage to the plug electrodes, an ion current detector, an ignition controller which controls the bias voltage to be applied simultaneously to a start of a low-temperature oxidation reaction, and the electric discharge occurs at an ignition timing later than the reaction start, and an estimator which estimates a fuel property based on an ion current detected during a period from the bias voltage application start to a given timing earlier than the ignition timing. The ignition controller corrects the ignition timing according to the fuel property in the same cycle as that of the fuel property estimation, and controls so that the electric discharge occurs at the corrected ignition timing.

Provided is a control device for a vehicle in which an engine is mounted. An engine is provided with a three-way catalyst device provided in an exhaust passage. The control device includes a processing circuit. The processing circuit is configured to implement: a determination process for determining whether or not there is a state in which a large amount of ammonia is discharged from the three-way catalytic device; and a combustion temperature reduction process for reducing the combustion temperature of the engine when it is determined in the determination process that the engine is in a state in which the discharge amount is large.

[Object] It is to provide a control device of a vehicle capable of preventing an exhaust system component(s) for an engine from being overheated. [Solution] There is provided a vehicle with an engine and a control unit. The control unit is configured to execute an engine racing control of racing the engine, while an accelerator operation amount exceeds a threshold value TH1 with a non-travel range. The control unit is to terminate the engine racing control to thereby stop the engine, when the engine racing control is continued for an upper limit period of time TL.

A system for controlling one or more conditions associated with combustion events in one or more cylinders of an engine while generally maintaining a spark timing value at a relatively constant value. The system includes a controller configured to determine one or more temporary adjustments to the spark timing value that brings one or more conditions, such as, for example, engine knock levels and / or NOx levels to around, or within, a corresponding target or threshold level(s). Following selection and implementation of one of the adjustments to the spark timing value, the controller implement adjustments to the adjusted spark timing value to return to a target spark timing value. The controller can further be adapted to determine adjustments to the air-to-fuel ratio to accommodate operation of the engine at the target spark timing value while maintaining the one or more conditions at or below the corresponding threshold or target level(s).

This method for heating a pollution control catalyst in a direct-injection spark-ignition engine comprising a piston cylinder driven between a top dead center (H) position and a bottom dead center (B) position by a rotating crankshaft includes, during each fuel injection cycle: - a stratified injection stage (17) of fuel into the cylinder, beginning between 0° and 90° crankshaft angle after the piston has passed its top dead center (H), and during an expansion phase (D) in the cylinder; and - an ignition stage (19), beginning between 2° and 15° crankshaft angle after the end of the stratified injection stage (17). Figure for the abbreviation: Fig. 5

The application discloses a lean-burn engine control method, device and engine system. The lean-burn engine control method comprises the following steps: obtaining a current torque and a target torque; when the current torque is less than the target torque, obtaining an average effective pressure and an excess air coefficient; when the average effective pressure is in a first pressure range and the excess air coefficient is in a first coefficient range, adjusting an ignition angle, increasing air content and combustible content in a cylinder, and increasing the current torque to the target torque. By using the above technical scheme, the current torque can be increased, the thermal efficiency can be ensured to be high, and the combustion center can be prevented from changing, the ignition angle can be prevented from being large, and the lean-burn engine can be prevented from being damaged by knocking.

This device suppresses vibrations that can occur in a moving vehicle due to the operation of the compressor that compresses the refrigerant used for air conditioning. [Solution] The control device comprises an engine and a compressor that compresses a refrigerant for air conditioning driven by the engine. In a vehicle in motion, it performs air conditioning load torque correction control that reflects the change in air conditioning load torque due to a change in the compressor's driving state in the requested torque based on the driver's operation. The air conditioning load torque correction control includes a first torque correction control that increases the intake air volume to increase the actual air volume torque when the compressor transitions from a de-drive state to a drive state, and decreases the intake air volume to decrease the actual air volume torque when the compressor transitions from a drive state to a de-drive state, and a second torque correction control that retards the ignition timing to decrease the actual air volume torque when the compressor transitions from a de-drive state to a drive state and when it transitions from a drive state to a de-drive state.

Method for a power machine (10), comprising: to deactivate individual cylinder valve mechanisms according to a cylinder pattern chosen based on a knock value of each cylinder (14) of the power engine (10), wherein the selection involves selecting a first cylinder (14) which has a knock value above a threshold for deactivation, while a second cylinder (14) with a knock value below a threshold remains active during deactivation, characterized by the fact that the first cylinder (14) remains deactivated for a number of power engine cycles, the number being based on the temperature of the first cylinder (14), the number of power engine cycles being increased if the temperature of the first cylinder (14) rises above a threshold, the temperature of the cylinder (14) including a measured or derived cylinder internal temperature.

The invention provides an engine device which does not have an expensive sensor and can restrain the emission amount of nitrogen oxide to a target value regardless of the hydrogen mixing ratio of fuel gas. An engine device (1) that is driven by a fuel gas into which hydrogen has been mixed is provided with a control means (8) that controls the excess air ratio and / or ignition parameters of an engine (2) on the basis of the excess air ratio of a mixture of the fuel gas and air supplied to the engine (2) and the exhaust temperature of exhaust gas from the engine (2). Thus, nitrogen oxides contained in the exhaust gas are suppressed.