39results about "Ignition safety means" patented technology

To provide a technique which can prevent an electric discharge in an ignition plug at an unexpected timing.SOLUTION: An ignition device 1 for an internal combustion engine using a fuel containing hydrogen has an ignition coil 103 including a primary coil L1 and a secondary coil L2, a power supply device 102, a switching element 70, an ignition plug 113, and a limiting diode 114. The switching element 70 make a switch to carrying or interrupting a primary current flowing to the primary coil L1. The ignition plug 113 discharges electric at a gap d on the basis of a high voltage inducted at one end 822 of the secondary coil L2. The limiting diode 114 is a zener diode or an avalanche diode having a forward direction from the one end 822 of the secondary coil L2 to the other end 821. A breakdown voltage of the limiting diode 114 is larger than a maximum value of a voltage in ON, which is calculated by multiplying a direct current voltage value applied to one end 811 of the primary coil L1 by a ratio of a winding number of the secondary coil L2 to a winding number of the primary coil L1.SELECTED DRAWING: Figure 1

The utility model relates to the field of diesel engines, in particular to a spark plug sheath structure for a fuel injector of a high-horsepower diesel engine, which comprises a top and a bottom, a mounting hole is arranged on the upper portion and is a stepped hole, a fuel injector mounting hole is arranged on the lower portion, and the fuel injector mounting hole is communicated with the stepped hole. The top of the spark plug sheath mechanism is divided into an upper portion and a lower portion through a stepped hole, a plurality of wrench installation clamping holes are formed in the step position of the stepped hole and evenly distributed around the annular step of the stepped hole, the size of the wrench installation clamping holes is matched with the size of the working end of a torque wrench, and a sheath bottom installation groove is formed in the air cylinder cover. The spark plug sheath mechanism is mounted in the mounting groove at the bottom of the sheath, so that the problems of cracking of the cylinder cover due to incapability of bearing high temperature, particularly high failure rate and weak reliability of a nose bridge area of the cylinder cover with high temperature and large temperature difference, and cracking of the nose bridge area of the cylinder cover of a diesel engine at the present stage are solved.

The application provides an over-temperature protection device of an igniter control module, comprising a control unit, a voltage stabilizing filter unit connected to a positive voltage input end of the control unit and configured to provide a power supply voltage for the control unit, a first series voltage dividing unit connected to a same-phase input end of the control unit and configured to provide a reference voltage for the control unit, and a second series voltage dividing unit connected to an inverse-phase input end of the control unit and configured to monitor the temperature of an IGBT power tube and convert the temperature into a monitoring voltage; wherein an output end of the control unit is connected to a gate of the IGBT power tube, and the control unit compares the monitoring voltage with the reference voltage and outputs a control signal for controlling the IGBT. The over-temperature protection device of the igniter control module can effectively control the overall temperature of the igniter control module, and can improve the heating condition of the igniter.

A usage management system for vessel propulsion apparatuses includes a use rights management server and a user terminal device. A controller of a vessel propulsion apparatus operates a prime mover in a permission mode to permit an output exceeding a predetermined limit output if use permission is provided from the user terminal device, and operates the prime mover in a non-permission mode to prohibit an output exceeding the predetermined limit output if use permission is not provided from the user terminal device. The user terminal device enters an active state to allow issuance of use permission if a use-permission notification is received from the use rights management server, and enters a non-active state to prohibit issuance of use permission if a use-permission notification is not received from the use rights management server. The use rights management server refers to use rights information concerning the vessel propulsion apparatus, and transmits a use-permission notification or a use-non-permission notification in accordance with use rights information.

The application is suitable for the technical field of vehicle control, and provides a control method and device of an engine in a vehicle, a storage medium and the vehicle.The method comprises the following steps: monitoring the ignition voltage of the engine in the vehicle, and controlling the engine differently according to the size of the ignition voltage; compared with the prior method of directly starting the engine after receiving a starting instruction, the application sets different control strategies for the engine, and determines the control strategy to be used according to the ignition voltage, that is, determines the corresponding control strategy according to the current working condition of the vehicle, so that the control of the engine is more in line with the current working condition, the intelligence of the engine control is improved, and the vehicle failure caused by the engine is naturally reduced.

To provide a technique which can prevent an electric discharge in an ignition plug at an abnormal timing.SOLUTION: An ignition device 1 for an internal combustion engine using a fuel containing hydrogen has an ignition coil 103 including a primary coil L1 and a secondary coil L2, a power supply device 102, a switching element 70, an ignition plug 113, a first backflow prevention diode 111, and a first resistance 112. The switching element 70 make a switch to carrying or interrupting a primary current flowing to the primary coil L1. The ignition plug 113 discharges electric on the basis of a high voltage inducted at one end 822 of the secondary coil L2. Between the other end 821 of the secondary coil L2 and the power supply device 102, two first connection lines 122a, 122b are arranged in parallel. The first backflow prevention diode 111 is inserted in the first connection line 122a, and has a forward direction from the one end 822 of the secondary coil L2 to the other end 821. The first resistance 112 is inserted in the first connection line 122b, and has a resistance value of 1 MΩ or more.SELECTED DRAWING: Figure 1

The application provides a kind of carburetor type aviation piston engine ignition method: S1, obtains sensor signal A and sensor signal B;S2, according to sensor signal A and sensor signal B and preset calculation rule respectively calculates the ignition pulse width and ignition advance angle of ignition controller A and ignition controller B;S3, ignition controller A and ignition controller B are ignited according to the calculated ignition pulse width and ignition advance angle, and the output of detection is ignited.The application provides a kind of carburetor type aviation piston engine ignition method, and the output voltage value, current value and duration of real-time acquisition are compared with preset value, so as to effectively judge the various faults of ignition output, and protect the ignition driving device of ignition controller.The application compensates the state of missing firepower caused by the failure of ignition controller A by the data interaction of ignition controller A and ignition controller B and the adjusted ignition controller B.

An engine ignition system (100) can include a multifunction controller (101), and an exciter (103) operatively connected to the multifunction controller (101). The multifunction controller (101) can be configured to control the exciter (103) to output an ignition voltage. The multifunction controller (101) can be configured to perform at least one other engine control function.

The invention relates to a wireless lanyard system (10) for a marine vessel (14) propelled by at least one propulsion device (11). The system comprises: i) an operator fob (20) worn by an operator of the marine vessel (14); ii) a helm transceiver (18) at a helm area (15) of the marine vessel (14) configured to receive radio signals from the operator fob (20); iii) a lanyard control module (49) executable on a processor (46) and configured to: a) adjust a radius (R, R1..R4) of the permitted zone (Z, Z1..Z4) based on at least one of the engine rpm or a vessel speed, wherein the radius (R, R1..R4) decreases as the engine rpm increases or the vessel speed increases, or based on an GPS location of the marine vessel (14) that the lanyard control module (49) receives; b) determine based on communications between the operator fob (20) and the helm transceiver (18) whether the operator is within a permitted zone (Z, Z1..Z4) with respect to the helm area (15); c) generate a lanyard event when the operator is not within the permitted zone (Z, Z1..Z4). The system (10) is further configured such that, upon generation of the lanyard event, the propulsion device (11) is controlled to reduce an engine rpm of an engine (60) in the propulsion device (11) to an idle rpm and / or to turn off the propulsion device (11).

The invention provides an ignition gap adjusting device and an ignition gap adjusting method. Remote control equipment automatically controls a motor to act according to an ignition gap detected by a displacement sensor to achieve automatic and efficient adjustment of the ignition gap. A worker checks an image, transmitted by an image acquisition component, of a scale position of a scale indicated by a scale indication component on remote control equipment, so that the ignition gap is intuitively determined; the remote control device controls the motor to act according to an adjusting instruction input by a worker to achieve remote readjustment and calibration of the ignition gap, and therefore the ignition gap can be accurately adjusted to a target value. The displacement sensor, the image acquisition component and the electrode are far away and are powered by the battery, so that the conditions of displacement sensor failure or inaccurate detection, motor false start or overvoltage damage and the like caused by strong electromagnetic interference and high-voltage invasion are not easy to occur, and the device is suitable for scenes with high environmental potential, large potential fluctuation and strong electromagnetic interference.

The application relates to the technical field of vehicles, in particular to a spark plug thermal management device, an engine, a vehicle and a spark plug thermal management method, wherein the method comprises the following steps: a spark plug is internally provided with a fluid passage; a switch assembly has multiple switch states, each switch state being determined by a temperature interval in which the current temperature of the spark plug is located; a cooling assembly is used for cooling the fluid in the fluid passage when the switch assembly is in a first switch state; a heating assembly is used for heating the fluid in the fluid passage when the switch assembly is in a second switch state; and a control assembly is used for controlling the switch assembly to be in the first switch state when the current temperature is in a first temperature interval, or controlling the switch assembly to be in the second switch state when the current temperature is in a second temperature interval. Thus, the problem that the spark plug cannot actively adjust the temperature is solved, the spark plug can be heated or cooled, and stable ignition of the spark plug under various working conditions can be ensured.

In an internal combustion engine (1), a fuel containing hydrogen is supplied to a combustion chamber. A control unit (4) controls execution of the discharging of a spark plug (2) by controlling eletrification of an ignition coil (3). The control unit (4) performs control so as to execute normal discharging and waste discharging in a discharge gap (G). In normal discharging, the fuel in the combustion chamber is ignited. In waste discharging, energy remaining in the ignition coil (3) is released after normal discharging. The discharge energy in waste discharging is less than the discharge energy in normal discharging. The control unit (4) performs control so as to execute waste discharging from the time after normal discharging has been executed to the time fuel is supplied to the combustion chamber.

This patent application discloses an electronic circuit (101) for controlling the spark of a spark plug (SP1) in a capacitor discharge ignition system (100) of an internal combustion engine. The electronic circuit (101) includes: an ignition coil (110) arranged to supply current to the spark plug (SP1); an ignition capacitor (C1) arranged to supply energy to a primary winding (L1); a voltage source (130) arranged to supply energy to at least one of the ignition capacitor (C1) and the primary winding (L1); a first switch (SW1) connected to a first primary terminal (TL1) and a first power supply terminal (TS1); a second switch (SW2) connected to a second capacitor terminal (TC2) and a second power supply terminal (TS2); and a third switch (SW3) connected to the second capacitor terminal (TC2) and the first power supply terminal (TS1). A capacitor discharge ignition system (100) including the above-mentioned electronic circuit (101) and an internal combustion engine including the capacitor discharge ignition system (100) are also disclosed.

An internal combustion engine includes: a combustion chamber to which a gas fuel containing hydrogen is supplied; an ignition device configured to ignite the gas fuel within the combustion chamber; and a control device for controlling execution of an ignition operation of the ignition device at a predetermined ignition timing. The predetermined ignition timing includes a first-time ignition timing of one combustion cycle, at which the ignition operation is executed for a first time, and a subsequent ignition timing of the one combustion cycle, at which the ignition operation is executed subsequent to the first-time ignition timing.

A method (100) for limiting the rotational speed of a crankshaft (3) of an internal combustion engine (10) of a handheld power tool (1). The internal combustion engine (10) includes an ignition device (7), an intake system (9), a throttle valve (11) in the intake system (9), and an electric actuator arrangement (13) configured to move the throttle valve (11) between an open position and a closed position. The method (100) includes a step (110) of retarding the ignition timing of the ignition device (7) from an initial ignition timing to a retarded ignition timing when the rotational speed of the crankshaft (3) exceeds an upper speed limit, and a step (120) of controlling the electric actuator arrangement (13) to move the throttle valve (11) toward the closed position. The present disclosure further relates to a control arrangement (21) and a handheld power tool (1).

Ignition diagnostics system and procedures for evaluating and optimizing the ignition performance of internal combustion engines (ICEs), such as those burning hydrogen (H2) and / or other fuels. For example, the ignition diagnostics system and procedures use an artificial intelligence (AI) model with one or more machine learning (ML) algorithms to detect, predict, and / or otherwise evaluate abnormal combustion events and provide this information to an electronic control unit (ECU) in real time. The ECU, in turn, can make combustion-related changes to one or more components of the ignition system to optimize performance.Integrating the AI ​​model into the ignition diagnostic system and procedure provides a fast and simplified solution that can be implemented for a wide variety of internal combustion engines, including those powered by alternative fuels, where the detection of abnormal combustion events and the monitoring of combustion-related parameters may be important.

The examples described here provide a method that includes calculating an engine speed, at least partially, based on a crankshaft angle sensor signal received by the engine's crankshaft angle sensor at periodic intervals defined by a crankshaft rotation. The method further includes calculating an engine acceleration, at least partially, based on the engine speed. The method also includes generating, using a filter, a filtered engine acceleration for the periodic intervals, at least partially based on the engine acceleration. Finally, the method includes calculating an RMS engine acceleration, at least partially, based on the filtered engine acceleration for the periodic intervals.The method further comprises detecting an engine misfire event, at least partially, based on the RMS engine acceleration. The method further comprises implementing a corrective action for the vehicle in response to the detection of the engine misfire event.

The utility model relates to an internal combustion engine arrangement (1000) having an internal combustion engine (1) operated with gaseous or liquid fuel, comprising a combustion chamber (10) having a spark plug (4), an inlet valve (6) and an outlet valve (7), and an injector (5) associated with the combustion chamber (10), wherein the device (1000) further comprises a sensor device (11) for detecting measurement data relating to an operating state and / or operating parameter of the internal combustion engine (1), an engine starter (1a) and a control unit (100), and wherein the control unit (100) is designed and configured to receive the measurement data from the sensor device (11) and to ascertain the operating state and / or operating parameter of the internal combustion engine (1) on the basis of the measurement data, wherein the control unit (100) causes at least one preheating process of the spark plug (4) as a function of the operating state and / or operating parameter, the preheating process comprising repeatedly activating the spark plug (4) before a combustion process occurs in the combustion chamber (10).

An ignition system may include an igniter circuit to control the current in a coil supplied by a battery based on an input signal from an engine control unit. To prevent overheating, the igniter circuit may be configured to shut down the current in the coil when the input signal is held high for an over dwell period. The disclosed igniter circuit is configured with circuitry to automatically adjust the over dwell period used based on a condition of the battery to prevent overheating without prematurely shutting down. The automatic adjustment includes indirectly monitoring the battery condition based on a current or a voltage of a switching device coupled to the coil.

The invention relates to a method for determining the aging degree of a spark plug. The method comprises the following steps: receiving a current or voltage characteristic of a secondary winding in the spark plug; determining an average peak voltage of the secondary winding based on the current or voltage characteristic; and calculating the aging degree of the spark plug according to the average peak voltage. The invention also relates to a device for determining the aging degree of the spark plug, a computer program product and an electronic control unit ECU.

A method (100) for limiting the rotational speed of a crankshaft (3) of an internal combustion engine (10) of a handheld power tool (1). The internal combustion engine (10) includes an ignition device (7), an intake system (9), a throttle valve (11) in the intake system (9), and an electric actuator arrangement (13) configured to move the throttle valve (11) between an open position and a closed position. The method (100) includes a step (110) of retarding the ignition timing of the ignition device (7) from an initial ignition timing to a retarded ignition timing when the rotational speed of the crankshaft (3) exceeds an upper speed limit, and a step (120) of controlling the electric actuator arrangement (13) to move the throttle valve (11) toward the closed position. The present disclosure further relates to a control arrangement (21) and a handheld power tool (1).

A temperature control system for a hot surface igniter, the system including: a power supply module, for supplying power to the control system; and further comprising: a storage module, which pre-stores a set target temperature; a collection module, for collecting and obtaining the current temperature of the hot surface igniter; a determination module, for determining whether the current temperature of the hot surface igniter matches the target temperature; a calculation module, for obtaining the temperature difference value between the target temperature and the current temperature by calculation using the current temperature when the current temperature does not match the target temperature, and obtaining a voltage control quantity according to the temperature difference value; and a control module, for automatically controlling an output voltage of the power supply module according to the obtained voltage control quantity until it is determined that the current temperature of the hot surface igniter matches the target temperature. The present disclosure can enable the hot surface igniter to obtain a suitable voltage to ensure that the hot surface igniter operates at a set target temperature, thereby realizing precise control over the operating temperature of the hot surface igniter, and increasing the service life of the hot surface igniter

A method (100) of restricting a rotational speed of a crankshaft (3) of an engine (10) of a handheld power tool (1). The engine (10) comprises an ignition device (7), an air inlet system (9), a throttle valve (11) in the air inlet system (9), and an electric actuator arrangement (13) configured to move the throttle valve (11) between an open position and a closed position. The method (100) comprises the steps of, when the rotational speed of the crankshaft (3) reaches above an upper threshold speed: retarding (110) an ignition timing of the ignition device (7) from an initial ignition timing to a retarded ignition timing, and controlling (120) the electric actuator arrangement (13) to move the throttle valve (11) towards the closed position. The present disclosure further relates to a control arrangement (21) and a handheld power tool (1).

The embodiment of the invention discloses an engine ignition angle calibration method and device, equipment and a storage medium, and the method comprises the steps that first state data of a target engine during operation at a first ignition angle are obtained, and the first state data comprise first knock intensity data and first angular acceleration data; determining whether the first state data meets a knock condition or not; under the condition that the first state data does not meet the knocking condition and a first torque value when the target engine operates at the previous ignition angle of the first ignition angle is smaller than a second torque value when the target engine operates at the first ignition angle, the first ignition angle is adjusted to obtain the next ignition angle of the first ignition angle, and determining the target ignition angle based on the first ignition angle until the state data when the target engine operates at the next ignition angle of the first ignition angle meets the knock condition or the second torque value is greater than or equal to the torque value when the target engine operates at the next ignition angle of the first ignition angle. The embodiment of the invention can ensure the calibration accuracy of the ignition angle.

The present disclosure relates to a method and a device for evaluating the compression of the cylinders of an internal combustion engine. The method for evaluating the compression of the cylinders of an internal-combustion engine of a vehicle having an electric starter motor and respective starting battery, comprising: start capturing the battery voltage signal when the starter motor stars to rotate the internal-combustion engine so as to initiate operation of the engine under its own power; cease capturing the battery voltage signal when the engine enters operation under its own power; process the captured voltage signal for the location of local minimums; calculate the time difference between consecutive local minimums; detect if there is a variation of time between the calculated differences higher than a predetermined threshold between any said calculated time differences; if there is such variation, signal a potential engine malfunction.

The utility model discloses an ignition coil supporting assembly which comprises a supporting installation plate. The limiting piece is detachably mounted on the supporting mounting plate and is used for limiting the ignition coil on the supporting mounting plate; the limiting piece comprises a locking block connected with the supporting installation plate, a protection block extending in the length direction of the supporting installation plate and anti-warping strips symmetrically arranged on the two sides of the protection block and connected with the supporting installation plate. The front end of the anti-warping strip is provided with a clamping part, a clamping groove is formed in the clamping part, the supporting installation plate is provided with a clamping protrusion matched with the clamping groove, the limiting piece adopts the locking block and can be detachably connected with the supporting installation plate, the ignition coil is convenient to install, in addition, due to the arrangement of the protection block, the anti-warping strip is not prone to warping, and the anti-warping strip is not prone to warping. On one hand, the ignition coil can be prevented from falling off, and on the other hand, the tail of the protection block is bent and abuts against the tail of the ignition coil, so that the ignition coil is prevented from axially moving.

To shorten the duration time of the run-on phenomenon, while preventing an engine from being activated by firing of an ignition plug, after engine stop based on the operation of a drive stop switch.SOLUTION: 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.SELECTED DRAWING: Figure 3

The utility model discloses a double-layer insulating ceramic ignition electrode structure in the technical field of ceramic igniters, which comprises a ceramic igniter, one end of the ceramic igniter is fixedly provided with a first insulating ceramic mechanism, and the other end of the ceramic igniter is fixedly provided with a second insulating ceramic mechanism; the first insulating ceramic mechanism comprises a ceramic shell fixed to the ceramic igniter, a plurality of limiting balls are movably arranged at the upper end of the ceramic shell, a pushing ring is movably installed in the upper end of the ceramic shell, a holding ring is fixedly arranged at one end of the pushing ring, and a reset spring is fixedly connected to one side of the holding ring. A positioning ring is fixedly arranged at the other end of the reset spring; the ceramic igniter is installed through the first insulation ceramic mechanism, insulation protection is carried out on the electrode column, the second insulation ceramic mechanism is arranged at the tail end of the ceramic igniter and used for carrying out insulation protection on the wiring end, and the use safety of the ceramic igniter is kept.