61results about "Ignition safety means" 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 usage management system includes a use rights management server and a user terminal. 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, 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. The user terminal 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 transmits a use-permission notification or a use-non-permission notification in accordance with use rights information concerning the vessel propulsion apparatus.

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).

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

A high-pressure sheath special for a natural gas engine of a commercial vehicle comprises a high-pressure connecting rod made of plastic materials, a high-pressure sheath body made of Teflon materials and a cylinder head cover sealing cover made of silicone rubber materials, the high-pressure sheath body is connected to the lower end of the high-pressure connecting rod in a sleeved mode, and the cylinder head cover sealing cover is connected to the upper end of the high-pressure connecting rod in a sleeved mode. A high-pressure spring is installed in the high-pressure connecting rod and the high-pressure sheath in the longitudinal direction, the top end of the high-pressure spring is fixed to the upper end of the high-pressure connecting rod through a high-pressure connecting bolt, and a sheath sealing ring is installed in the high-pressure sheath and surrounds the periphery of the lower end of the high-pressure spring. The cylinder head cover sealing cover is provided with a labyrinth type exhaust path so that ionized gas in the spark plug well can be exhausted under the sealed condition. The spark plug effectively reduces product surface corrosion caused by corona discharge, adopts a labyrinth exhaust route, ensures that ozone in a spark plug well can be smoothly discharged, can ensure relative sealing performance, prevents external moisture from immersing, and prevents corrosion insulation.

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 standby generator includes an alternator to produce electricity for distribution to an electrical system, and an air-cooled internal combustion engine driving the alternator. The air-cooled internal combustion engine includes one or more cylinders, one or more spark plugs each configured to initiate combustion in a corresponding cylinder, and one or more ignition coils each coupled to a respective spark plug of the one or more spark plugs to provide a voltage to the respective spark plug. The standby generator also includes a battery system electrically coupled to the one or more ignition coils to provide power thereto, and a digital ignition module wiring the battery system to each of the one or more ignition coils to control operation of the one or more spark plugs.

A method of operating an internal combustion engine that includes injecting fuel into a combustion chamber to form an air-fuel mixture, where the combustion chamber includes a cylinder head, cylinder sidewalls, and a piston that reciprocates within the cylinder sidewalls is disclosed, wherein the method detects pre-ignition of the air-fuel mixture during a detected intake or compression stroke of the piston, determines that a super knock condition could occur, and mitigates formation of a super knock condition by deploying a super knock countermeasure within the detected compression stroke.

This application can carefully perform maintenance of the engine and the work machine with appropriate evaluation indicators, grasp the operating states of the engine and the work machine respectively, and provide appropriate services to each user on the basis of understanding the operating characteristics of the user. The ignition coil assembly includes: an ignition circuit having a primary coil and a secondary coil; a power generation unit having a power generation coil; a control unit that controls the ignition timing of the ignition circuit according to an input signal generated by the induced voltage of the power generation coil; a sensor that inputs load information to the control unit, and the control unit includes a memory that stores the operating time information corresponding to the operating information and the load information based on the input signal as matrix data composed of operating information, load information, and time data.

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 present disclosure provides "systems and methods for preventing spark plug fouling in a variable displacement engine". Methods and systems are provided for reducing fouling of spark plugs in cylinders of a variable displacement engine configured to propel a vehicle. In one example, a method includes: in response to deactivation of one or more cylinders of the engine, providing a spark to the one or more cylinders at predefined positions respectively on one or more pistons coupled to the one or more cylinders, wherein the predefined positions include the one or more pistons being within a bottom dead center position threshold. In this way, spark plug fouling can be reduced or eliminated during cylinder deactivation conditions.

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

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 utility model provides an engine, which takes the direction of an air inlet pipe of the engine as the upward direction and comprises a crankshaft for engine transmission, the first cylinder body and the second cylinder body are horizontally arranged on the two sides of the crankshaft; the engine ignition system is connected with the first air cylinder body and the second air cylinder body and used for starting an engine; the engine ignition system comprises a magnetic flywheel which is arranged on the crankshaft in a sleeving mode and rotates synchronously with the crankshaft, a high-voltage pack assembly, an igniter assembly and a spark plug assembly, the magnetic flywheel rotates along with the crankshaft, then the high-voltage pack assembly generates breakdown voltage, and a first air cylinder body and a second air cylinder body are ignited through the igniter assembly and the spark plug assembly. And a piston in the engine is further driven to move. According to the engine provided by the utility model, the arranged engine ignition system is safe and reliable, the flameout condition of the engine can be avoided, and the engine has the advantages of simple and convenient ignition structure, high safety coefficient and strong reliability.

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.

A method (100) of limiting a rotational speed of a crankshaft (3) of an engine (10) of a hand-held power tool (1). The engine (10) comprises an ignition device (7), an intake system (9), a throttle valve (11) located in the intake system (9), and an electric actuator device (13) configured to move the throttle valve (11) between an open position and a closed position. The method (100) comprises the steps of: delaying (110) the ignition timing of the ignition device (7) from an initial ignition timing to a delayed ignition timing when the rotational speed of the crankshaft (3) reaches above an upper threshold speed; and controlling (120) the electric actuator device (13) to move the throttle valve (11) towards the closed position. The present disclosure also relates to a control device (21) and a hand-held power tool (1).

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.

Disclosed is a high-voltage ignition device for automobiles that can avoid generating high temperatures, comprising a generator, a charger electrically connected to the generator, a lithium battery pack electrically connected to the charger, an ignition switch electrically connected to the lithium battery pack, an ignition coil electrically connected to the ignition switch, a distributor electrically connected to the ignition coil, a high-voltage package electrically connected to the distributor, and spark plugs electrically connected to the high-voltage package; the voltage of the lithium battery pack is higher than the voltage of the generator, and a control switching device is provided between the ignition coil and the distributor. The invention can achieve long-term constant high-voltage ignition, making the fuel burn more fully, the power is more powerful, and the fuel consumption is reduced at the same time, and the economy is better.

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).