100results 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 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.

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.

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

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 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.

An internal combustion engine ignition system is provided that prevents backfiring into the intake manifold resulting from residual charge caused primarily by spark quenching. Even if a secondary current ceases to flow due to spark quenching after the discharge of an ignition coil 4, and residual charge remains in a secondary circuit 12, the residual charge moves along a bypass path 71 of a residual charge reducer 7 based on the potential difference between the potential of a first discharge path connecting line L2c and ground GND. The residual charge is then converted into heat energy by an electrical resistor 72, rapidly dissipating the residual charge to reduce the voltage to a level below a breakdown voltage.

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.

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.

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

To provide an internal combustion engine system that enables more appropriate combustion corresponding to a transmission state of a transmission by using a first ignition device disposed in a main combustion chamber and a second ignition device disposed in an auxiliary combustion chamber.SOLUTION: An internal combustion engine system is mounted to a vehicle and includes: a body 10 that has a main combustion chamber 40 filled with an air-fuel mixture, an auxiliary combustion chamber 42 communicating with the main combustion chamber 40 via a plurality of communication holes, a first ignition plug 61 disposed in the main combustion chamber 40 to ignite the air-fuel mixture in the main combustion chamber 40 and a second ignition plug 62 disposed in the auxiliary combustion chamber 42 to ignite the air-fuel mixture in the auxiliary combustion chamber 42 and to which a transmission 26 is connected; and a control device that controls the body 10. The control device switches an ignition method to the air-fuel mixture by using the first ignition plug 61 and the second ignition plug 62 in accordance with an operating state of the body 10 and a transmission state of the transmission.SELECTED DRAWING: Figure 2

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.

This invention suppresses both the increase in ignition coil size and the misignition of an internal combustion engine. The internal combustion engine control device of this invention includes: a first igniter controlling the energization of the primary coil; a second igniter connected in parallel with the first igniter controlling the energization of the primary coil; and an ignition control unit. The ignition control unit controls the first and second igniters after they are switched on, setting a time difference between the energization and de-energization timings of the first and second igniters. The ignition control unit sets the energization and de-energization timings of the first and second igniters before the spark plug discharge ends.

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.