212results about "Ignition control" patented technology

A pre-ignition prevention system for a turbulent jet ignition (TJI) engine having dual spark plugs includes an ion sensing system and a controller configured to receive the ion sense signal from the ion sensing system, detect, using the ion sense signal, a misfire event where a firing of a first spark plug fails to completely combust a fuel / air pre-charge in a pre-chamber of a cylinder of the TJI engine, in response to detecting the misfire event, detect, using the ion sense signal, an exhaust stroke heat release event after a firing of the second spark plug indicative of a remaining portion of a primary fuel / air charge in the main chamber and, in response to detecting the exhaust stroke heat release event, adjust fueling for at least one subsequent combustion cycle to prevent pre-ignition of the remaining portion of the primary fuel / air charge in the main chamber.

A method for detecting a source of a misfire for an engine having turbulent jet ignition (TJI) during a service routine is presented. A diagnostic tool is coupled to an engine controller of the TJI engine. An increase in revolutions per minute (RPM) of the TJI engine is commanded. An engine roughness is measured and a baseline engine roughness for the TJI engine while all cylinders are in an active state is established. A first main spark plug is commanded to deactivate. A first test engine roughness of the TJI engine is measured based on the first main spark plug being deactivated. The baseline engine roughness is compared to the first test engine roughness. A determination is made, based on the comparison, whether the first pre-chamber is fouled.

The invention discloses a method for improving jittering in the flameout and shutdown process of a diesel engine, and belongs to the technical field of diesel engine control. The method for improving jittering in the flameout and shutdown process of the diesel engine comprises four subsystems including an ECU module, an electronic control unit module, a valve body control module and a post-processing module; the ECU module is responsible for monitoring and identifying data returned by the sensor and sending corresponding operation to the electronic control unit module according to the data; the electronic control unit module is responsible for receiving data of the ECU module and controlling the valve body control module according to the data. In the flameout shutdown process, the electronic control unit automatically recognizes the flameout working condition of the diesel engine, so that the control instruction is sent to the exhaust brake valve and the in-cylinder brake valve to close the exhaust brake valve and the in-cylinder brake valve, and therefore the diesel engine can generate large air suction resistance in the flameout process to restrain and consume rotation energy of a flywheel; therefore, shaking generated in the flameout process of the flywheel is restrained and absorbed, and the diesel engine is prevented from being damaged.

An ignition method is provided for an internal combustion engine having an engine cylinder and a remote ignition chamber in fluid communication with the main combustion chamber via a tubing assembly. The remote ignition chamber and tube are charged with a first combustible charge gas. The main combustion chamber is charged with a second combustible charge gas. A plurality of high-voltage electrodes arranged along the tube are used to pretreat the first combustible charge gas to generate radicals therein. The pretreated first combustible charge gas is ignited to produce a deflagration flame. A plurality of high-energy discharge sparkplugs arranged along the tube are used to sense a property of the deflagration flame. When the sensed property of the deflagration flame is within predetermined threshold limits, at least one of the high-energy discharge sparkplugs is used to provide a transient high energy spark to the deflagration flame to stimulate deflagration-to-detonation transition.

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

[Problem] Provided are an engine device in which a combustion condition of an engine is grasped and abnormal combustion can be predicted before the occurrence of abnormal combustion; and a method of controlling the engine device. [Solution] In an engine device 1 driven by gaseous fuel, combustion duration in a combustion chamber 12a in an engine 2 is detected, abnormal combustion occurring in the combustion chamber 12a is estimated based on a correlation between the combustion duration and abnormal combustion (backfiring), and a suppression method for suppressing the abnormal combustion is determined when the abnormal combustion is estimated. The engine device 1 performs control to shorten the combustion duration as the suppression method.

An apparatus, including a first circuit containing a first load, wherein a first battery is associated with the first circuit, and the first load comprises an electric motor of an electric or hybrid vehicle; a second circuit containing a second load which draws current from a second battery when the first load is not operating or is non-operational; a first switch capable of disconnecting the first battery from the first circuit; a second switch capable of connecting the first battery to the first circuit, wherein the first switch and second switch are connected in series; at least one recharger which recharges the first battery and second battery when the first load is operating; and a third load connected between the first circuit and a third circuit containing the second battery. The third load generates a circuit stabilizing voltage drop when first battery and second battery voltage levels are not equal.

The invention provides a motorcycle ignition auxiliary system which comprises a high-energy ignition module, an intelligent ignition time control module, a high-reliability electronic element module, a strong anti-interference module, an intelligent integration and communication module, a compatibility adaptation module and a fault diagnosis and early warning module. Through close cooperative work of all the modules, the ignition performance and reliability are remarkably improved, the ignition time and energy can be accurately controlled, the system adapts to various working conditions and environments, the anti-interference capacity is enhanced, intelligent data interaction and decision making are achieved, all kinds of added equipment are effectively compatible, faults are accurately diagnosed and early warned, and remote maintenance is supported; the power performance, the economical efficiency, the stability, the intelligent level, the use convenience and the safety of the motorcycle are greatly improved, a solid guarantee is provided for high-performance operation and personalized modification of the motorcycle, the technological development of modern motorcycles and multiple requirements of users are met, and the technological progress and the product upgrading of the motorcycle industry are powerfully promoted.

A tractor gear shifting safety redundancy protection system comprises a controller, an FNR reversing handle and an engine ECU, the FNR reversing handle outputs an N-gear signal to a bus, the engine ECU transmits rotating speed information to the bus, the controller receives and stores the rotating speed information of the engine at the previous moment, after the N-gear signal is obtained, whether the current rotating speed changes compared with the previous moment or not is compared, and if yes, the engine ECU transmits the rotating speed information to the bus. And judging whether the N-gear signal is invalid or not, and giving an instruction. And if the rotating speed information does not change, the controller performs data interaction with the engine ECU according to a preset CAN communication protocol, and sends a flameout instruction.

In certain embodiments, a significant improvement in H2-ICE performance can be achieved by a combination of active scavenging pre-combustion chamber technology and predictive model-based spark control to overcome the drawbacks of known combustion technologies. In certain embodiments, advanced combustion modeling and simulation of the ignition process, including spark events, arc movement and elongation, and resulting flame propagation, can be used to predict the relationship between spark energy / output, flow within the electrode gap, and flame growth (SOC) for different engines, different spark plugs, and various conditions. This information can be used to adjust the spark energy / output characteristics during the spark event of the same cycle in order to minimize SOC variations and significantly reduce the tendency of combustion anomalies such as backfire, knocking, and pre-ignition that prevent the achievement of high engine output density and efficiency.

An ignition system (2) for controlling spark generation of a sparkplug (4) in a combustion engine, comprising an electronic circuit (6) comprising an ignition coil (8) including a primary winding (10), and a secondary winding (12) across which the sparkplug (4) is connectable, a voltage source (14) configured to supply energy to said primary winding (10), and a control unit (16) configured to control said spark generation including to initiate spark generation and thereby enter a spark initialization mode. Upon receipt of a breaktrough detection signal (20), the control unit (16) is configured to terminate the spark initialization mode and to enter a spark maintenance and control mode, to control and maintain the spark by controlling the current of the spark to follow a preset value, and to maintain the duration of the spark until a predetermined time period has lapsed. When the predetermined time period has lapsed, the control unit generated a spark termination control signal (22) to be applied to said electronic circuit (6) to terminate the spark and thereby enter a spark termination mode.

The application provides a kind of ignition method, device, medium and methanol engine system of methanol engine.The method determines whether early ignition or knock occurs by analyzing the pressure and temperature at the current time, according to the fault judgment result, the ignition mode can be intelligently adjusted, if potential early ignition or knock is detected, the system will adjust from the initial ignition mode to the ignition mode using more spark plugs, such as using the main spark plug and all auxiliary spark plugs at the same time, or only using the main spark plug to ignite, to reduce the instability in the combustion process, to suppress the occurrence of abnormal combustion phenomenon, once the final ignition mode is determined, the system will execute ignition according to the mode, thereby effectively controlling early ignition, knock and other faults without sacrificing engine performance, thereby solving the problem that the existing scheme is difficult to suppress early ignition and knock phenomenon of methanol engine during ignition period.

A system and method for operating an ignition system. An ignition transformer has primary and secondary windings. A spark apparatus is connected with the secondary windings of the ignition transformer. One or more characteristics of a spark generated by the spark apparatus is provided. An electronic control unit is adapted to control the ignition transformer, such that, based on an identification of the spark using the one or more characteristics and the spark reference data, the electronic control unit sends control signals to the ignition transformer to modify the one or more characteristics of the spark. Modification of the one or more characteristics may occur in a same spark cycle as measurement of the one or more characteristics.

To provide an ignition coil in which an increase in size is suppressed while excellent ignitability is realized.SOLUTION: In an ignition coil 2 according to an embodiment, a first outer peripheral iron core 36o of a first coil set 10 and a second outer peripheral iron core 50o of a second coil set 20 have a common portion 58. A direction of a magnetic flux generated in the common portion 58 when a current flows through a first primary coil 32 of the first coil set 10 is opposite to a direction of the magnetic flux generated in the common portion 58 when the current flows through a second primary coil 46 of the second coil set 20 in a second direction. The direction of an induced current generated in a first secondary coil 34 when the current of the first primary coil 32 is cut off at an output port 28 is the same as the direction of the induced current generated in a second secondary coil 48 when the current of the second primary coil 46 is cut off at the output port 28.SELECTED DRAWING: Figure 2

A plasma generating system having an igniter or other plasma generator for use in low pressure environments, such as occurs in aviation. Combustion is initiated with an electrode configuration having a large usable area of electrodes for high current plasma discharge over a longer length of the electrodes, resulting in a long useful life of the plasma generator. The plasma generation system includes circuitry that generates and propagate plasma along the electrodes by a Lorentz force and a thermal force using high currents that move the plasma along the electrodes without causing a destructive material state change in the electrodes.

An ignition resumption control unit (40) is disposed that resumes control of an ignition plug (14) if a first predetermined time has elapsed or if engine rotation number has fallen below a threshold value, after receiving an engine stop signal. The ignition resumption control unit (40) executes the control of the ignition plug (14), based on resumption ignition timings (Tg(R-on)) that are timing deviating from an entire ignition timing range set in a normal working area of an engine body (2).

The invention discloses an aviation piston engine redundancy ignition system with an electromagnetic shielding function and an ignition method, and particularly relates to the field of engines. Comprising a first control module and a second control module, the two control modules are connected with two ignition coils through high-voltage damping wires respectively, and each ignition coil is connected with a spark plug mechanism through a high-voltage damping wire; the two spark plug mechanisms are arranged on an air cylinder of the engine; a shielding layer is coated outside the high-voltage damping wire; and the spark plug mechanisms are respectively and correspondingly sleeved with shielding shells. Based on the system, redundancy ignition control is adopted, two control modules are used, each control module can control two sets of independent ignition systems at the same time, release electric energy to two ignition coils at the same time, conduct ignition control, and can effectively restrain electromagnetic interference.

The invention discloses an engine ignition control method and a related device, and relates to the technical field of engine control. The engine ignition control method comprises the steps that the actual water content of methanol fuel of a target engine is obtained; adjusting the ignition energy of an ignition coil according to the actual water content so as to perform ignition control on the target engine; wherein the ignition energy of the ignition coil is in positive correlation with the actual water content. The water content of the methanol fuel of the engine can be measured in real time, then the ignition energy of the ignition coil is adjusted according to the water content, the higher the water content of the methanol fuel is, the larger the corresponding ignition energy of the ignition coil is, and therefore the relatively rarefied methanol fuel can be successfully ignited; therefore, stability of combustion in an engine cylinder is guaranteed, and engine power is improved.

A motor system (100) includes an engine (104) having one or more cylinders, an electronic control unit (112), and an exhaust treatment system (114) fluidly connected with and located downstream of the one or more cylinders. The exhaust treatment system (114) includes an exhaust line (108), a downstream combustion zone, a combustion ignition source within the combustion zone, and a catalyst downstream of and in thermal communication with the combustion zone. A method of heating a catalyst during an engine cold start and a method of initializing periodic operating conditions of an engine (104) having one or more cylinders are also described.

To suppress waste of electric power by making energizing time to an ignition coil appropriate.SOLUTION: A reference energization time is determined based on a voltage of a power supply and a rotation speed. On the basis of a condition related to the combustion state of the internal combustion engine, it is determined whether the combustion state of the internal combustion engine is in a relatively stable first operation state or in a relatively unstable second operation state. To judge whether an actual combustion state is good or bad by detecting the actual combustion state of an internal combustion engine. When it is determined that the combustion state is good in the first operation state (time t1), the energization time is largely reduced and corrected from the reference energization time to a predetermined level, and thereafter, when it is determined that the actual combustion state is bad, the energization time is gradually corrected to be longer by a minute amount (time t2, t3). In the second operation state, when it is determined that the combustion state is good, the energization time is corrected to be gradually shortened by a minute amount from the reference energization time.SELECTED DRAWING: Figure 3

An ignition coil assembly with internal diagnostic features that can be used to monitor and evaluate various aspects of an ignition system and provide continuous feedback. The ignition coil assembly can be a coil-on-plug type device that converts low-voltage battery current into high-voltage ignition pulses, and it can include multiple input terminals, an ignition coil with primary and secondary windings, an ignition circuit, an output terminal, a spark plug connector, and a housing.The ignition circuit includes an ignition operating circuit and an ignition diagnostic circuit, which in turn includes a charge evaluation circuit for monitoring a charging phase, a discharge evaluation circuit for monitoring a discharge phase, and a feedback integration circuit for combining outputs into a multiplexed digital signal, which can then be sent via a single output connection to an engine control unit (ECU) or the like.

The invention provides a hydrogen engine ignition method and a related device, and relates to the field of engines, the scheme comprises the steps of obtaining target parameters of an engine, judging the working condition of the engine based on the target parameters of the engine, and when the working condition of the engine is a first working condition, controlling a main combustion chamber spark plug to ignite the engine; when the working condition is the second working condition, the pre-combustion chamber spark plug is controlled to ignite the engine; when the working condition is the third working condition, the main combustion chamber spark plug and the pre-combustion chamber spark plug are controlled to ignite the engine at the same time; the first working condition is a working condition in which the pre-calibrated probability of preignition and detonation of the engine is greater than a preset probability; the third working condition is the working condition that the pre-calibrated combustion speed of the engine is lower than the preset combustion speed; the second working condition is other working conditions except the first working condition and the third working condition. Therefore, different ignition strategies are selected under different engine working conditions, the preignition and knocking probability under the high-load working condition is reduced, and the combustion speed under the low-load working condition is increased.

The utility model relates to a switch control device for an ignition system of engineering machinery and the ignition system comprising the switch control device. The ignition system comprises an ignition switch and a power switch, and the device comprises a pressure detection mechanism used for detecting the pressure value of at least one seat of the engineering machinery; the idle speed detection mechanism is used for detecting whether an engine of the engineering machinery is in an idle speed working condition or not; the first timer is configured to start timing based on detection results of the pressure detection mechanism and the idle speed detection mechanism; the first control loop is configured to turn off the ignition switch when the timing time of the first timer reaches a first duration; and the second control loop is configured to turn off the power switch when the timing time of the first timer reaches a second duration. The ignition control device can effectively prevent the problem of power shortage caused by continuous discharge of the storage battery in an unmanned use state, and avoids the trouble that the machine cannot be started for the second time due to the power shortage of the storage battery.

The invention relates to a method and a device for controlling an internal combustion engine (1) which has a prechamber spark plug (3) and a hook-type spark plug (4) in a combustion chamber (2). In a first operating range of the internal combustion engine (1), the combustion in the combustion chamber (2) is triggered by the prechamber spark plug (3), and in a second operating range of the internal combustion engine, the combustion is triggered by the hook-type spark plug (4).

Method comprising: iterative estimation of an ignition coil temperature; Updating the iteratively estimated ignition coil temperature based on each of heat transfer from the engine to the ignition coil, internal resistance heating of the ignition coil, and heat transfer from the environment to the ignition coil; and Charging an ignition coil over a dwell time determined based on each of an engine temperature, an ambient temperature and a dwell time of a last spark ignition, wherein the internal resistance heating of the ignition coil is estimated based on a last determined residence time, an average residence time current and a primary coil resistance.

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.

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.

The invention provides an ignition method and device of a methanol engine, a medium and a methanol engine system. According to the method, whether preignition or detonation occurs or not is determined by analyzing the pressure and temperature at the current moment, the ignition mode can be intelligently adjusted according to the fault judgment result, if potential preignition or detonation is detected, the system is adjusted to the ignition mode using more spark plugs from the initial ignition mode, and the ignition efficiency is improved. For example, a main spark plug and all auxiliary spark plugs are used at the same time or only the main spark plug is used for ignition, instability in the combustion process is reduced, the abnormal combustion phenomenon is restrained, once the final ignition mode is determined, the system conducts ignition according to the mode, and therefore on the premise that the performance of the engine is not sacrificed, the ignition efficiency is improved. And faults such as preignition and knocking are effectively controlled, so that the problem that the preignition and knocking phenomena of the methanol engine in the ignition period are difficult to restrain in an existing scheme is solved.