175results about "Advancing/retarding ignition" patented technology

The present invention relates to the field of engine control technology, and specifically provides an engine electronic main water pump control method, device and storage medium. In the method: S1, obtains a first parameter group and a knock compensation parameter, and determines whether the electronic main water pump can start closed-loop control based on a target water temperature based on the first parameter group and the knock compensation parameter. If the determination is yes, enters S2; S2, determines whether the conditions for starting the knock compensation function are met based on the current engine state; if the determination result is yes, enters S3, and if the determination result is no, enters S5; S3, determines whether knock compensation is performed based on the current electronic main water pump output offset. If the electronic main water pump output offset is greater than a preset value, knock compensation is performed and enters S4; otherwise, enters S5; S4, switches the closed-loop control based on the target water temperature to the open-loop control based on the target water temperature; S5, starts the open-loop control strategy based on the target water temperature; in this way, the purpose of increasing the engine cooling intensity and thermal efficiency is achieved.

An ignition diagnostic system and method for evaluating and optimizing the ignition performance of internal combustion engines (ICEs), such as those that burn hydrogen (H2) and / or other fuels. According to one example, the ignition diagnostic system and method use an artificial intelligence (AI) model with one or more machine learning (ML) algorithm(s) to identify, predict and / or otherwise evaluate abnormal combustion events, and to provide such information to an electronic control unit (ECU) in real-time. The ECU, in turn, can make combustion-related modifications to one or more components of the ignition system to optimize performance. By integrating the AI model into the ignition diagnostic system and method, a fast and simplified solution is provided that can be implemented across a wide variety of ICEs, including those that burn alternative fuels, where detecting abnormal combustion events and monitoring combustion-related parameters can be important.

Method for controlling a spark-ignition engine having an exhaust aftertreatment system with a particulate filter and a catalyst located downstream of the particulate filter, comprising: Adjusting the ignition timing, at which at least one cylinder of a spark-ignition engine (10, 200, 300) receives a spark, to a retarded setting. when the amount of soot retained by a particulate filter (230, 240, 252) exceeds a threshold value and if the engine load is less than a threshold value, wherein a quantity of fuel supplied to at least one cylinder provides rich or stoichiometric exhaust gases which are fed to the exhaust aftertreatment system, while the ignition angle at which a spark is supplied to the at least one cylinder is retarded, and whereupon the engine's air / fuel mixture is subsequently controlled to be lean in order to oxidize the soot held by the particulate filter, where the amount of oxygen stored in the catalyst is monitored and, if this exceeds a first threshold, the air / fuel mixture of the engine is increased to a richer mixture until the amount of oxygen stored in the catalyst is less than a second threshold, whereupon the air / fuel mixture is controlled to a leaner mixture.

The present invention relates to a method for operating an internal combustion engine (100), wherein, in order to abruptly reduce a torque of the internal combustion engine (100) and / or to provide a low torque by the internal combustion engine (100), a retarded ignition angle adjustment is carried out, wherein water is injected into an intake tract (2) of the internal combustion engine (100) by means of a water injection system (4), and wherein a limit ignition angle for the ignition angle adjustment is determined based on a quantity of water injected by the water injection system (4). The present invention further relates to an internal combustion engine (100) comprising a water injection system (4) and a control unit (5) that is configured to carry out an inventive method for operating the internal combustion engine (100).

The invention relates to a device for operating an internal combustion engine with a fuel. The device is set up to determine a standard ignition angle for an actual operating point of the internal combustion engine on the basis of ignition angle characteristic data, and to determine a knock limit distance of the standard ignition angle from a knock limit of the internal combustion engine on the basis of knock limit distance characteristic data for the actual operating point of the internal combustion engine. The device is also set up to determine an operating ignition angle for the operation of the combustion engine and / or an actual RON value of the fuel on the basis of the standard ignition angle and on the basis of the knock limit distance.

A method for detecting pre-ignition in a large engine having at least one cylinder in which a piston is arranged movable back and forth in an axial direction between a bottom dead center and a top dead center, wherein the large engine can be operated at least in a gas mode, in which an amount of gas is introduced as fuel into the cylinder, the gas is mixed with scavenging air and combusted at an air-gas-ratio, wherein during operation in the gas mode a first pressure (P1, P1') in the cylinder is measured at a first position (KW1) of the piston, and a second pressure (P2, P2') in the cylinder is measured at a second position (KW2) of the piston, wherein the first position (KW1) and the second position (KW2) are after the bottom dead center and before the top dead center. A peak pressure (PC, PC') is calculated from the first pressure (P1, P1') and the second pressure (P2, P2'), and pre-ignition is detected by comparing the peak pressure (PC, PC') with a threshold value. Furthermore, a large engine is proposed.

The present disclosure provides a method and system for operating an engine. The system and method for operating an engine including a compression ratio connecting rod for adjusting the engine's compression ratio are described. The system and method provide different ways to diagnose the presence or absence of engine misfire in response to engine operating regions that may be more or less susceptible to torsional engine crankshaft vibration. In one example, engine misfire may be determined in response to a force applied to the engine's compression ratio changing connecting rod.

The invention relates to the technical field of knock control, and discloses an intelligent control system and method for engine knock and preignition, and the method comprises the following steps: collecting engine knock signal data and preignition signal data, and carrying out the signal processing of the knock signal data and the preignition signal data, the method comprises the following steps: generating knock intensity data and preignition intensity data, and during engine knock and preignition identification, setting multi-stage identification thresholds including a basic threshold, a dynamic self-learning threshold and a temperature compensation threshold, and updating the thresholds in real time by utilizing a self-learning algorithm, so that the engine knock and preignition identification accuracy is improved. The method can effectively adapt to sensor signal characteristic change caused by engine wear, fuel quality difference and environment change, solves the problems of misjudgment and missed judgment caused by a fixed recognition threshold value, ensures the accuracy and reliability of knock and preignition recognition, reduces control errors, and improves the reliability of knock and preignition recognition. And the dynamic property, the economical efficiency and the driving smoothness of the engine are effectively improved.

A method for controlling a turbocharged hydrogen engine for burning an air-hydrogen mixture having an air-hydrogen ratio λ greater than 1. The hydrogen engine is configured to assume steady operating states and transient operating states, wherein ignition timings are more retarded in the transient operating states than in the steady operating states.

Task: In a signal generating device for motors having a staged pulse wheel on the side of a rotor, a setting is simplified to make a wave height value of a pulse signal generated when a stator detects a first-stage pulse wheel and a wave height value of a pulse signal generated when it detects a second-stage pulse wheel equal. Means for solving the problem: There is a rotor 3 which has a stage encoder wheel 303 which has a first stage encoder wheel 303A and a second stage encoder wheel 303B, and a stator 4 in which a stator iron core which has a magnetic pole opposite to the encoder wheel at the tip is wound with a signal coil.The wave height value of the pulse signal generated when the stator 4 detects the first-stage pulser wheel is limited to be lower than the wave height value of the pulse signal generated when it detects the second-stage pulser wheel by providing, at the tip of the first-stage pulser wheel 303A, a part deformed to inhibit a change in a magnetic flux flowing through the stator iron core that occurs when the tip of the first-stage pulser wheel 303A of the rotor 3 starts to oppose the magnetic pole of the stator iron core 4a.

A method for detecting and mitigating self-ignition in a cylinder (114) of an internal combustion engine (102), the method comprising: Providing a first sensor (119) for sensing a crank angle of a crankshaft (118) of the engine (102); Providing a second sensor (152) for detecting (220) a knock intensity signal in the cylinder (114) of the engine (102); Determining (210) the crank angle using the first sensor (119); Calculating (230, 235) a knock intensity signal indicative of cylinder pressure when the crank angle is between a first predetermined crank angle and a second predetermined crank angle; Determining (230, 235) at least one property of the knock intensity signal; Comparing (240) the at least one characteristic of the knock intensity signal with at least one predetermined characteristic; Determining (245) whether the at least one characteristic of the knock intensity signal exceeds the at least one predetermined characteristic; and Performing (250) at least one mitigation measure for the auto-ignition if the at least one property of the knock intensity signal exceeds the at least one predetermined property, characterized in that performing (250) the at least one auto-ignition mitigation measure comprises adjusting (280) a position of a camshaft (18) when the engine speed is between two predetermined engine speed thresholds, which are defined as a fifth predetermined engine speed threshold (ES 5 ) and as a sixth predetermined engine speed threshold (ES 6 ) and the engine load is between two predetermined engine load thresholds, which are referred to as a fifth predetermined engine load threshold (EL5 ) and as a sixth predetermined engine load threshold (EL 6 ) is located.

An engine includes pistons, cylinders, at least one fuel injector, spark plugs, and piston cooling jets. The engine includes an Electronic Control Unit configured to receive an engine oil temperature, current coolant temperature, current spark value, calibrated spark value, current engine speed, and current engine torque. The Electronic Control Unit is configured to determine a non-firing piston temperature, coolant temperature and combustion phase modifier, and firing piston temperature. The Electronic Control Unit outputs a predicted piston temperature. A method includes housing pistons in cylinders, supplying air, injecting fuel, combusting an air-fuel mixture, spraying engine oil, and receiving an engine oil temperature, current coolant temperature, current spark value, calibrated spark value, current engine speed, and current engine torque. The method includes determining a non-firing piston temperature, coolant temperature modifier, combustion phase modifier, firing piston temperature, outputting a predicted piston temperature, and coordinating operations of the fuel injectors and spark plugs.

To provide a method for detecting pre-ignition in a large engine.SOLUTION: A method is proposed, where a large engine can be operated at least in a gas mode, in which an amount of gas is introduced as fuel into the cylinder, the gas is mixed with scavenging air and combusted at an air gas-ratio, where during operation in the gas mode a first pressure (P1, P1') in the cylinder is measured at a first position (KW1) of the piston, and a second pressure (P2, P2') in the cylinder is measured at a second position (KW2) of the piston, where the first position (KW1) and the second position (KW2) are after the bottom dead center and before the top dead center. A peak pressure (PC, PC') is calculated from the first pressure (P1, P1') and the second pressure (P2, P2'), and pre-ignition is detected by comparing the peak pressure (PC, PC') with a threshold value. Furthermore, a large engine is proposed.SELECTED DRAWING: Figure 1

The invention relates to a method for correcting a minimum ignition setting (1) of an internal combustion engine of a motor vehicle powertrain, the internal combustion engine having an exhaust gas outlet, characterized in that the method comprises steps of: Analyzing (11) an exhaust temperature (2) at the exhaust gas outlet; Determining (12) a temperature delta between the previously analyzed exhaust temperature and a predetermined maximum exhaust temperature; Determining (13) a correction factor from the previously determined temperature delta; and, Calculating (14) a limit of the minimum ignition setting (4) as a function of the previously determined correction factor. Figure 1

A straddled vehicle (1) includes an accelerator manipulation detection sensor (40) including a coupling part (401) and a direct detection part (402), the coupling part being connected to a manual accelerator operator (30) without any mechanical wire, the direct detection part being configured to directly detect a change in position of the coupling part. While a crankshaft (101) is in forward rotation or is stopped after a control device (50) stops a combustion operation of an engine (10) in response to an establishment of an idling stop condition, the control device applies: a rotational resistance; a force in forward rotation direction; or a force in reverse rotation direction, to the crankshaft by means of a starter motor (52). Then, when, as one condition, movement of the position of the coupling part (401) from an initial position to an adjacent region is detected based on a signal from the accelerator manipulation detection sensor (40), the control device (50) rotates the crankshaft (101) by means of the starter motor (52), to restart the engine (10).

Disclosed is an engine control device (10) that reduces knocking by controlling an ignition timing (θ) of an engine (1), and that is provided with a first determination unit (11), a second determination unit (12), and a selection unit (13). The first determination unit (11) calculates knock occurrence probability (P) and likelihood (L) on the basis of the number of times of ignition (n) and the number of times of knocking (k), and determines whether or not it is necessary to change the ignition timing (θ), on the basis of the magnitude of the likelihood (L). The second determination unit (12) calculates knock intensity (S) or knock occurrence probability (P), and determines whether or not it is necessary to change the ignition timing (θ), on the basis of the knock intensity (S) or the knock occurrence probability (P). The selection unit (13) selects the determination result of one of the first determination unit (11) and the second determination unit (12) on the basis of a predetermined condition.

System for a vehicle (10), comprising: a power machine (14); a torque converter (40) connected to the engine (14); a transmission (16) connected to the torque converter (40) via an input shaft (152); a particulate filter (PF) connected to the engine (14); and an engine control module (30) connected to the engine (14), the transmission (16), and the particulate filter (PF), the engine control module (30) configured to perform maintenance regeneration operations comprising: Determining whether the particulate filter (PF) is above a predetermined service regeneration limit; Determining whether the transmission (16) is in the park or neutral position; and if the particulate filter (PF) is above a predetermined service regeneration limit and the transmission (16) is in park or neutral, performing service regeneration operations including locking the input shaft (152) to the transmission (16) and increasing engine speed to retard an ignition spark in the engine (14) and increase a temperature in the particulate filter (PF).

The present invention comprises an engine, a centrifugal clutch for transmitting the drive force of the engine to a driven device, and a control device for adjusting the power of the engine. The engine is accelerated by starting engine power capable of reaching a rotational speed higher than the clutch-in rotational speed at the time of starting. The control device has suppression control for suppressing the starting engine power so that the rotational speed does not exceed the clutch-in rotational speed.

A method (100) of operating an internal combustion engine (1) is disclosed. The method (100) comprises: calculating (101) a value of the torque (Ls) generated by the engine (1) by combusting fuel at a predetermined operation stage (Os), monitoring (103) temperature (T) of exhaust, comparing (105) the monitored temperature (T) with a threshold value (Tp), comparing (107) the calculated value of the torque (Ls) with a threshold value (Lp). If the monitored temperature (T) exceeds the threshold value (Tp), and if the calculated value of the torque (Ls) is lower than the threshold value (Lp): connecting (109) the load assembly (5) to the rotatable part (7) and activating (111) the fuel managing arrangement (3) to adjust combustion of the fuel such that the combustion occurs earlier than combustion at the predetermined operation stage (Os). A control arrangement (9), a computer program, a computer-readable medium (200), an internal combustion engine (1) and a vehicle (10) are also disclosed.

Engine operating procedure comprising: Supplying an ignition spark for combusting an air-fuel mixture in an engine (10); Storing particles generated by combustion of the air-fuel mixture in a particle filter (71); Heating the particulate filter (71) to enable particulate filter regeneration while the engine load is less than a threshold value and while the engine (10) is rotating via a torque supplied by vehicle wheels, characterized in that the heating of the particulate filter (71) takes place by terminating the delivery of an ignition spark to a cylinder, and the method further comprises injecting fuel into the cylinder during an exhaust stroke of the cylinder in response to an increase in engine load.

In one instance, disclosed herein is an engine system, comprising: an engine comprising a plurality of engine cylinders; and a controller operative to: control a respective ignition timing for each engine cylinder of the plurality of engine cylinders; detect an increase of a knock intensity of the engine; after detecting the increase of the knock intensity of the engine, compare the knock intensity of the engine to a threshold knock intensity; if the knock intensity of the engine is greater than the threshold knock intensity, retard the respective ignition timing for each engine cylinder of the plurality of engine cylinders by the same amount; and if the knock intensity of the engine is less than the threshold knock intensity, retard a first ignition timing of a first engine cylinder by a first amount independently of a second ignition timing of a second engine cylinder.

The present invention pertains to a detection method for detecting a short-lived speed sensing anomaly of an internal combustion engine. The detection method comprises the steps of performing a sensor health check, detecting an engine speed deviation, performing a torque deviation check and identifying whether the detected engine speed deviation refers to a short-lived speed sensing anomaly based on the sensor health check and the torque deviation check. Furthermore, a device suitable for carrying out the detection method according to the present disclosure may be provided, comprising a control unit configured to perform the detection method according to the invention.

Exhaust gas recirculation system (1) for a gasoline engine (2), comprising: an exhaust pipe (1.1) connectable to an exhaust manifold (2.1) of the gasoline engine (2), an inlet line (1.2) connectable to an inlet manifold (2.2) of the gasoline engine (2), a compressor (4, 4a, 4b) arranged in the inlet line (1.2), wherein a turbine (3, 3a, 3b) is provided in the exhaust line (1.1), characterized in that an exhaust gas recirculation line (1.3) is provided, which branches off from the exhaust gas line (1.1) upstream of the turbine (3, 3a, 3b) and opens into the inlet line (1.2) downstream of the compressor (4, 4a, 4b), a particle filter (1.4x) is arranged in the exhaust gas recirculation line (1.3), and the particulate filter (1.4x) has a catalytic 3-way coating for the conversion of NOx, CO and HC, and a 3-way exhaust gas catalyst (1.6) is provided upstream of the particulate filter (1.4x), wherein the 3-way exhaust gas catalyst (1.6) is placed within the exhaust line (1.1), and wherein a cooler (1.7) is provided within the exhaust gas recirculation line (1.3) downstream of the particulate filter (1.4x).

The application discloses an engine ignition angle adjusting method, device, equipment and storage medium, and the method comprises the steps of detecting the knock intensity of the engine, controlling the ignition angle of the engine according to the knock intensity, and adjusting the ignition angle of the current gasoline octane number according to the knock back angle of the ignition angle. According to the application, the ignition angle of the engine is controlled according to the knock intensity, and the ignition angle of the current gasoline octane number is adjusted according to the knock back angle of the controlled ignition angle, so that the ignition angle can be adjusted according to different gasoline octane numbers, the knock intensity of the ignition angle at the time of ignition is adjusted, and the performance of the engine is improved.

Methods for thermal control, including: Determine whether a catalytic converter (18) is active; Determine whether a catalyst (20) is active for selective catalytic reduction (SCR); Adjusting the air-fuel ratio of a machine (14) for operation at a stoichiometric ratio and retarding the ignition spark of the machine (14) when the catalytic converter (18) is not active; and Perform fuel injection when the catalytic converter (18) is active and the SCR catalyst (20) is not active; characterized by the fact that the catalytic converter (18) is a three-way catalyst (18); wherein, based on a first temperature of the catalytic converter (18) and a first active volume of the catalytic converter (18), it is determined whether the catalytic converter (18) is active; wherein, based on a second temperature of the SCR catalyst (20) and a second active volume of the SCR catalyst (20), it is determined whether the SCR catalyst (20) is active, wherein the second temperature is an average temperature determined as a weighted mean of temperatures T1 and T2 measured upstream and downstream of the SCR catalyst (20) according to the equation WA = x * T1 + (x-1) * T2, where WA is the weighted mean and x is a calibrated value between 0 and 1; and wherein the fuel injection is carried out by a post-fuel injection and / or by direct injection of fuel into an exhaust system (16) of the machine (14).

To make both suppression of vibration and attainment of torque responsiveness in accordance with a running mode compatible.SOLUTION: A vehicular control device is used in a vehicle provided with at least one power source that outputs power to a driving shaft connected to an axle, controls the power source so that the vehicle runs in one running mode selected out of a plurality of running modes, and also controls the power source so that torque outputted to the driving shaft when an accelerator is turned off gradually decreases over a target decreasing-time toward torque which is required when the accelerator is turned off. The vehicular control device sets the target decreasing-time so that the time is equal to n-times a reciprocal of resonant frequency of a driving system including the driving source, where n is an integer being one or more and is changed depending on the running mode.SELECTED DRAWING: Figure 3

A control system for an internal combustion engine includes at least one sensor configured to measure a combustion signal within at least one cylinder of a plurality of cylinders within the internal combustion engine. The combustion signal corresponds to a first combustion cycle. The control system also includes a controller operably connected to the at least one sensor. The controller is configured to receive the combustion signal from the at least one sensor and determine whether the measured combustion signal satisfies at least one condition associated with the internal combustion engine. The at least one condition corresponds to the at least one of engine misfire or delayed combustion. The controller is further configured to, based on the determination, reduce a fueling amount to the at least one cylinder for a predetermined number of combustion cycles following the first combustion cycle.

A computer-implemented method that, when executed by data processing hardware of a motor vehicle including a turbocharger having a turbine, causes the data processing hardware to perform operations. One operation includes receiving an accelerator pedal position input indicating that a vehicle accelerator pedal has moved to an overrun position. Another operation includes receiving one or more vehicle performance parameter inputs each corresponding to a measured vehicle performance parameter. Yet another operation includes calculating a vehicle dynamic score based on the one or more vehicle performance parameter inputs. A further operation includes determining a target boost profile based on the calculated vehicle dynamic score. Another operation includes instructing one or more outputs of the vehicle to transition to a dynamic mode to generate an increased turbine power based on the target boost profile.

One object is to appropriately control the heat balance of an ignition device to suppress an increase in the size and cost of the ignition device. An internal combustion engine control device that controls an internal combustion engine for a moving object, the internal combustion engine including: an intake device that draws intake air into a cylinder through an intake port; a fuel supply device that supplies fuel; and an ignition device that ignites an air-fuel mixture containing the intake air and the fuel. An internal combustion engine control device including an ignition device temperature estimation unit and a setting device. The ignition device temperature estimation unit measures or estimates a current temperature of the ignition device and estimates a future temperature, which is a temperature of the ignition device on a future path, based on information regarding a current state of the moving object.The setting device sets a control instruction of at least one of the ignition device, the fuel supply device, or the intake device according to the current temperature and the future temperature.

The invention discloses a closed-loop control method and device for an EGR exhaust gas flow model, and the method comprises the following steps: judging whether the EGR exhaust gas flow model generates deviation or not according to vehicle operation parameters, triggering the closed-loop calculation of the EGR exhaust gas flow if the EGR exhaust gas flow model generates deviation, and not triggering the closed-loop calculation of the EGR exhaust gas flow if the EGR exhaust gas flow model generates deviation; if the EGR waste gas flow closed-loop calculation is triggered, the amount of fresh air and the amount of waste gas entering a cylinder when the EGR is started are corrected according to the correction deviation of an oil way for switching on and off the EGR, and a theoretical EGR waste gas flow model when the EGR is started is obtained; and the opening degree of the EGR valve is controlled according to the theoretical EGR waste gas flow model when EGR is started, the step of judging whether the EGR waste gas flow model generates deviation or not according to the vehicle operation parameters is returned, and closed-loop control over the EGR waste gas flow model is achieved. According to the method, accurate control over the EGR exhaust gas flow model is achieved, the fuel economy and emission performance of an engine are improved, and new technical support is provided for development of the gasoline engine technology.