55results about "Ignition control" patented technology

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 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.

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

Systems and methods for spark ignition in a combustion engine are provided. The spark ignition system includes a terminal, a magnetic body, an insulating body, and a grounding body. The spark ignition system further includes a center electrode electrically connected to the terminal and protruding into a combustion chamber. The grounding body includes a body section and an inclined section. The spark ignition engine includes a combustion chamber and a spark ignition system. The method includes applying a voltage to a spark ignition system, thereby generating a spark.

The invention discloses a double-end ignition coil cylinder judgment detection feedback circuit. A power supply module is used for processing an input power supply and providing working voltage and reference voltage for the circuit; the EST signal processing module is used for integrating and processing the two paths of EST ignition control signals and then generating a first trigger control signal and a second trigger control signal; the ignition induction signal processing module latches the first logic signal under the control of the first trigger control signal to obtain a first state signal, and generates a second state signal according to the EST ignition control signal; and the signal feedback module is used for performing combined processing on the first state signal and the second state signal under the control of the second trigger control signal and outputting a feedback signal to the ECU for cylinder judgment detection and / or ignition state detection. According to the invention, cylinder judgment detection and / or ignition state detection are / is realized, the detection reliability is improved, the engine operation is optimized, and the failure risk and maintenance cost are reduced.

To provide an ignition coil for an internal combustion engine and an ignition device capable of efficiently radiating heat generated from two primary coils to the outside of a case.SOLUTION: An ignition coil 104 housed in a case has a first through iron core 61, a second through iron core 62, an outer peripheral iron core 6 on one end side, and an outer peripheral iron core 6 on the other end side. The first penetration iron core 61 penetrates the inside of the first primary coil and the inside of the first secondary coil L12. The second penetration iron core 62 penetrates the inside of the second primary coil and the inside of the second secondary coil L22. The one end side outer peripheral iron core 63 connects one end of the first through iron core 61 and one end of the second through iron core 62. The other end side outer peripheral iron core 64 connects the other end of the first through iron core 61 and the other end of the second through iron core 62. The case has a concave shape that is open upward and filled with the mold resin. The upper end portion of the one end side outer peripheral iron core 63 and the upper end portion of the other end side outer peripheral iron core 64 are located above the first secondary coil L12 and the second secondary coil L22, respectively.SELECTED DRAWING: Figure 5

An ignition system is provided. The ignition system includes at least one ignition module, which has an input end to receive control signal from the ECU, and an output end to supply ignition energy to the spark gap. The ignition module provides on-demand ignition energy based on an engine operation conditions with adaptively controlled discharge current amplitude and duration using prompt feedback signals measurement of the plasma impedance.

A fuel combustion enhancement device for use with an ignition system of a two-stroke or four-stroke internal combustion engine (ICE). A fuel combustion enhancement device is connected to the spark plug to regulate the spark generated from the voltage source to ignite the fuel-air mixture in the combustion chamber. The fuel combustion enhancement device includes a rectifier that rectifies a negative half-cycle of an alternating current (AC) from a voltage source to provide a negative direct current (DC) to a spark plug at a predetermined time and a predetermined duration of the combustion cycle.

An apparatus includes a processing chamber configured to contain a growth medium, at least one reservoir configured to contain at least one fluid, and a plasma reactor. The plasma reactor includes a plurality of electrodes including a first electrode and a second electrode, and a reaction zone is disposed between the first electrode and the second electrode. The apparatus also includes an ignition unit electrically connected to at least one of the plurality of electrodes, an injector in fluid communication with the at least one reservoir, and a pressure regulator configured to transfer the fluid to the injector. Various other apparatuses, systems, and methods are also disclosed.

Disclosed is a cascaded high-energy plasma scramjet ignition device, comprising an igniter anode (102), a first-stage cathode (101), first, second and third insulating ceramics (103, 105, 106), a jet hole (104) and a cavity stabilizer (107). A cascaded high-energy plasma scramjet ignition method is also provided. The present application is based on the design idea of'small-energy discharge triggering large-energy discharge', and the working process of the ignition system is divided into two stages. The spark generated in the first stage is not directly used for igniting the combustion chamber, but is used for triggering the large-energy long-distance discharge in the second stage. The increase of the discharge distance is conducive to improving the discharge efficiency, increasing the discharge energy and improving the ignition capacity. In addition, the coupling of the cathode and the scramjet combustion chamber wall can facilitate the sliding of the spark generated by the ignition system along the cavity wall, further improve the discharge efficiency and ignition energy, and thus realize the reliable and repeated ignition of the scramjet engine combustion chamber.

An internal combustion engine (1) may include a combustion chamber (41) into which a mixture (40) of fuel and air is supplied, a spark plug (50) disposed proximate to the combustion chamber (41) to ignite the mixture (40) by generating a spark such that ignition of the mixture drives a piston (6) operably coupled to a crank portion (12) of the engine (1), a speed sensor (102) configured to determine engine speed, and an electronic control unit (100) configured to control operation of the spark plug (50). The electronic control unit (100) may be configured to initiate a speed limitation operation in response to engine speed reaching a cut out speed threshold and to control ignition timing within an operating band (320) of ignition angles prior to engine speed reaching the cut out speed threshold. The speed limitation operation may include skipping application of sparks. The electronic control unit (100) is further configured to apply a changed ignition angle (330) relative to the operating band (320) for first at least one spark initiated after the speed limitation operation.

A dual-energy ignition system (10), comprising a high-voltage energy source (103) a low-voltage power source (104) a transformer (150) with a primary coil (110) configured to integrate the high-voltage power source and the low-voltage power source via a switching element to generate a significant amount of current; and an energy output circuit which is arranged at a predefined position to enable the high-voltage energy source (103) and the low-voltage energy source (104) to supply energy to the spark plug (112) in an orderly manner, wherein the high-voltage energy is supplied by the transformer (150) via a secondary coil (109), wherein the high-voltage energy source (103) triggers the spark and the low-voltage energy source (104) adds additional energy to the spark, and the triggering of the spark and the addition of the additional energy to the spark are carried out while the primary coil (110) of the transformer (150) is conducting, wherein the current of the high-voltage energy source (103) is limited in one mode using the transistor (153) and the associated circuit, wherein the high-voltage energy source (103) supplies energy to the transformer (110) in another mode using the energy recovered from the diode (105) without receiving energy from the source (180).

A machine control device initiates a fuel injection process to introduce an air-fuel mixture, containing fuel injected by a fuel injector, into the exhaust port without combusting the air-fuel mixture in the cylinder, while the crankshaft of an internal combustion engine is rotating. If the oxygen concentration of the exhaust gas, which has passed through a three-way catalyst, decreases during the execution of the fuel injection process, the machine control device initiates a stop process to halt the fuel injection.

The present utility model relates to the technical field of combustion-supporting of compression ignition engines, and provides a hot surface combustion-supporting system of an engine, for solving the problem in the prior art that direct use of methanol by an engine is affected due to the fact that methanol cannot be directly compression-ignited. Said system comprises: a hot surface igniter, which is used for igniting fuel of an engine; and a controller, which is used for performing temperature control of the hot surface igniter, can also communicate with an ECU of the engine, and is used for receiving a control signal of the ECU and a pre-set temperature value, and controlling on or off of the hot surface igniter according to the received control signal and the pre-set temperature value. The use of fuel having high latent heat of vaporization or high ignition temperature such as liquefied natural gas (LNG) in a compression ignition engine faces the same problem, which is covered by the present utility model, and to which the present utility model is applicable.

Systems and methods for spark ignition in a combustion engine are provided. The spark ignition system includes a terminal, a magnetic body, an insulating body, and a grounding body. The spark ignition system further includes a center electrode electrically connected to the terminal and protruding into a combustion chamber. The grounding body includes a body section and an inclined section. The spark ignition engine includes a combustion chamber and a spark ignition system. The method includes applying a voltage to a spark ignition system, thereby generating a spark.

The invention provides a lean-burn reliable ignition system structure of a special hybrid engine based on multiple spark plugs and a pre-combustion chamber and a control method of the lean-burn reliable ignition system structure. The structure comprises an engine body, a pre-combustion chamber, a side ignition unit and an external control module. The structure is lower in sensitivity to knocking boundaries and loads, and the combustion process of the internal combustion engine can be more controllable. According to the structure, the advantages of the three spark plugs and the precombustion chamber structure are combined, the fuel consumption rate of an engine can be effectively reduced, and meanwhile the circulation fluctuation rate of the engine in the combustion process is reduced. The ignition system can also flexibly adjust three spark plugs, an active / passive pre-combustion chamber, and a side spark plug and a pre-combustion chamber for cooperative ignition according to specific engine working conditions such as the air-fuel ratio, the rotating speed, the torque and the EGR rate, and the most reasonable ignition strategy under the complex working conditions can be achieved.

A system and method for controlling an ignition system. An ignition coil assembly has an ignition transformer with primary windings and secondary windings, the secondary windings having a length between two ends. The ignition coil assembly has a measuring device adjacent the length of the secondary windings. A control unit is adapted to regulate timing of primary drive pulses to the ignition transformer for generating a spark at a spark apparatus to ignite a fuel-air mixture in an engine cylinder. The timing is based at least in part on measurements made using the measuring device.

An ignition system (2) for controlling spark generation by a spark plug (4) in an internal combustion engine, the ignition system (2) comprising an electronic circuit (6) comprising an ignition coil (8) comprising a primary winding (10) and a secondary winding (12) on which the spark plug (4) is connected, a voltage source (14) configured to supply energy to said primary winding (10), and a control unit (16) arranged to control the ignition coil (8). The control unit (16) is configured to control the spark generation, including initiating spark generation and thus entering a spark initialization mode. Upon receipt of the breakdown 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 spark current to follow a preset value, and to maintain the duration of the spark until a predetermined time period elapses. When a predetermined time period has elapsed, the control unit generates a spark termination control signal (22) applied to the electronic circuit (6), thereby terminating the spark and thereby entering a spark termination mode.

To provide a technology for more surely igniting a fuel and early converging residual energy.SOLUTION: An ignition device 1 for an internal combustion engine has: a transformer 20 having a primary coil L1 and a secondary coil L2 electromagnetically connected to each other; an energization control portion 30 for controlling energization to the primary coil L1; a first ignition plug 91 electrically connected between a high pressure-side terminal 21 of the secondary coil L2 and ground; and a second ignition plug 92 electrically connected between a low pressure-side terminal 22 of the secondary coil L2 and the ground. The first ignition plug 91 and the second ignition plug 92 are disposed in the same combustion chamber of the internal combustion engine. Thus, a fuel can be more surely ignited by performing the discharge at two ignition plugs 91, 92. Further, residual energy of the first ignition plug 91 and residual energy of the second ignition plug 92 cancel each other, so that the residual energy can be quickly converged.SELECTED DRAWING: Figure 1

Embodiments describe a method of controlling a two-stroke internal combustion engine is shown. The method includes selecting one set of two or more sets of engine parameter inputs or a weighted value of two or more sets of engine parameter inputs, determining an engine output parameter from the selection, and utilizing the determined engine output parameter to control one or more engine operations; re-selecting one set of two or more sets of engine parameter inputs or a weighted value of two or more sets of engine parameter inputs during engine operation, utilizing the reselected output parameters to adjust one or more engine operations. Each set of engine parameter inputs includes a direct measurement of crankcase pressure and engine speed and optionally one or more of barometric pressure, exhaust valve position, air temperature, engine coolant temperature, exhaust temperature, boost pressure, crankshaft position and direction of rotation, humidity, fuel pressure, fuel temperature, detonation sensor level, exhaust oxygen content, and throttle valve angle.

An ignition coil accommodated in a casing includes first and second penetrating cores, a one-end peripheral core, and an other-end peripheral core. The first penetrating core penetrates the inside of a first primary coil and the inside of a first secondary coil. The second penetrating core penetrates the inside of a second primary coil and the inside of a second secondary coil. The one-end peripheral core connects one ends of the first and second penetrating cores. The other-end peripheral core connects the other ends of the first and second penetrating cores. The casing is opened upward to have a concave shape filled with mold resin. Respective upper ends of the one-end peripheral core and the other-end peripheral core are positioned above first and second secondary coils. This allows heat generated from the two primary coils included in the ignition coil to be efficiently dissipated to the outside of the casing.

The application provides a jet ignition combustion chamber control method and device, a jet ignition combustion chamber, an electronic device and a storage medium. The combustion chamber comprises a pre-chamber and a main combustion chamber. A spark plug is arranged in the pre-chamber. A jet injection hole is arranged at the bottom of the pre-chamber. The pre-chamber and the main combustion chamber are communicated through the jet injection hole. The method comprises the following steps: obtaining the excess air coefficient of the pre-chamber; if the excess air coefficient reaches a preset threshold value, controlling the spark plug to ignite, so that the high-temperature jet generated by the pre-chamber enters the main combustion chamber through the jet injection hole, and the main combustion chamber is caused to occur multi-point spontaneous combustion. The technical scheme of the embodiment of the application can improve the thermal efficiency of the engine and reduce harmful gas emission.

The invention relates to the technical field of engine combustion noise control, in particular to an engine combustion noise control method and device and a vehicle. The method comprises the steps that the current operation working condition of a parallel type hybrid power system is obtained, and the current operation working condition comprises the charging working condition and the discharging working condition; the engine charges a power battery of the parallel hybrid power system when working under the charging working condition; if the current operation condition is the charging condition, pre-calibrated engine operation parameters are obtained, and the pre-calibrated engine operation parameters comprise the engine operation parameter, with the minimum engine combustion noise, of the engine of the parallel hybrid power system in the calibration test data; engine operation is controlled through the engine operation parameters so as to reduce engine combustion noise. Therefore, the problems that an engine of a parallel hybrid power system in the prior art needs to drive a vehicle and charge a battery at the same time under the charging working condition, and combustion noise is likely to be increased are solved.

The embodiment of the invention relates to the technical field of vehicle-mounted electronics, and discloses an ignition circuit based on coil power supply voltage stabilization and an internal combustion engine ignition system, which comprise a power supply, a control signal preprocessing unit, a single chip microcomputer, an input power supply sampling unit, a voltage stabilization unit and a coil processing control unit, the single chip microcomputer obtains the control signal preprocessed by the control signal preprocessing unit and analyzes whether the preprocessed control signal is an ignition signal or not, if the preprocessed control signal is the ignition signal, the single chip microcomputer obtains sampling voltage input into the power source sampling unit and analyzes whether the sampling voltage is within a preset voltage range or not, and if the sampling voltage is within the preset voltage range, the single chip microcomputer outputs the control signal; if yes, outputting a voltage stabilization control instruction to the voltage stabilization unit; the voltage stabilization unit stabilizes the voltage of the power supply to a preset voltage value according to the voltage stabilization control instruction and provides the voltage to the coil processing control unit. By means of the mode, the stable voltage can be output in the complex vehicle-mounted voltage environment, effective and stable ignition is ensured, and the reliability of an ignition system is enhanced.

Conventionally, detection of the state of a sub-chamber has been impossible unless a sensor is installed near the sub-chamber, preventing appropriate engine control. An ECU 20 includes: a jet intensity estimating unit 51 for estimating the intensity of a flame jet by means of at least one of a primary current, a primary voltage, a secondary current, and a secondary voltage of an ignition device which is attached inside a sub-combustion chamber, injects into a main combustion chamber a flame jet generated by ignition of an air-fuel mixture inside the sub-combustion chamber, and supplies a secondary current to an ignition plug for igniting the air-fuel mixture in the main combustion chamber; and an engine control unit 52 which controls an internal combustion engine on the basis of a combustion state inside the sub-combustion chamber determined from the estimated intensity of the flame jet.

The application provides a kind of engine management system shutdown timing calculation method, system and medium, it is related to the technical field of automobile engine control, method includes the engine electronic control unit and the related controller of sending shutdown timing signal;Engine electronic control unit determines whether the shutdown timing signal obtained is derived from the shutdown timing signal sent by the related controller through CAN bus;Based on determining the validity of the shutdown timing signal derived from the shutdown timing signal sent by the related controller;Using the valid shutdown timing signal received by engine electronic control unit, calculate the engine operating time;Based on the engine operating time, calculate the engine shutdown timing time.The application does not need additional hardware, solves the calculation of shutdown timing signal when there is no shutdown timing chip, not only ensures the calculation accuracy of shutdown timing, but also reduces the high hardware cost.