47results about "Other installations" patented technology

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

An ignition coil system includes an ignition coil including a first primary coil, a second primary coil, and a secondary coil, and configured to generate a discharge current by electromagnetic induction with the first primary coil or the second primary coil, a first battery electrically connected to the first primary coil, a second battery electrically connected to the second primary coil, a first battery switch provided between the first primary coil and the first battery, and configured to block electrical power supplied from the first battery to the first primary coil, a second battery switch provided between the second primary coil and the second battery, and configured to block electrical power supplied from the second battery to the second primary coil, a first switch configured to adjust charging and discharging of the first primary coil, and a second switch configured to adjust charging and discharging of the second primary coil.

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

This control system is for a divided-chamber type internal combustion engine having a main combustion chamber and a sub combustion chamber that is provided separate from the main combustion chamber by a wall. The control system comprises: an ignition device disposed in the sub combustion chamber; and a control device that controls the ignition device. The ignition device can change the electric discharge time between a first time and a second time longer than the first time, and can change the discharged electric current between a first electric current and a second electric current higher than the first electric current. The control device causes the electric discharge to occur for the second time when the divided-chamber type internal combustion engine is being operated at a low load, and causes the electric discharge to occur for the first time at the second electric current when the divided-chamber type internal combustion engine is being operated at a high load.

The invention relates to the technical field of ignition coils, and discloses a control method and system for an electric injection type motorcycle inductance type ignition coil, and the system comprises an engine, a knock sensor, a power supply device and a control part; the knock sensor is installed in an air cylinder of the engine. The control part is connected with the engine and the power supply device and comprises a base layer, a judgment layer, an optimization layer and a storage layer; wherein the base layer is configured to determine an initial ignition advance angle of the to-be-controlled ignition coil based on the analysis result; the judgment layer is configured to judge whether the initial ignition advance angle is optimized or not based on the air-fuel ratio; the optimization layer is configured to determine an optimization coefficient of the initial ignition advance angle according to the angle optimization factor and determine an optimized ignition advance angle; the storage layer is configured to store an angle optimization factor. The ignition accuracy of the ignition coil is improved.

To improve detection accuracy of preignition in a spark ignition engine.SOLUTION: A processor 31 of an ECU 30 detects occurrence of pre-ignition in a spark ignition engine that ignites a mixture in a combustion chamber 13 by spark discharge through a process of calculating a rotational fluctuation amount and self-ignition start timing of the engine 10 and a process of determining that pre-ignition has occurred when the rotational fluctuation amount is equal to or larger than a predetermined threshold value and the self-ignition start timing is earlier than predetermined timing. The self-ignition start timing is the timing when the temperature of the mixture in the combustion chamber 13 during a compression stroke reaches the ignition point of the mixture.SELECTED DRAWING: Figure 1

The purpose of the present invention is to improve the accuracy of control parameters for controlling a control target. This control device is provided with an explanatory variable setting unit, a Mahalanobis distance calculation unit, and a control parameter setting unit. The explanatory variable setting unit sets explanatory variables on the basis of time-series data indicating the status or state of a control target. The Mahalanobis distance calculation unit calculates a Mahalanobis distance on the basis of the explanatory variables. The control parameter setting unit sets control parameters for causing the control target to perform an operation according to the Mahalanobis distance.

A method for controlling an ignition coil for a spark plug of an internal combustion engine, wherein the ignition coil is associated with a respective engine cylinder in which combustion is to occur, wherein the ignition coil is driven by a spark demand pulse. The method comprises determining a spark demand pulse by determining an end time point of the spark demand pulse, determining a spark demand pulse length based on a historic battery voltage profile of the associated battery voltage, determining a start time point of the spark demand pulse based on the determined end time point and the determined spark demand pulse length, driving the ignition coil with the determined spark demand pulse. A benefit of the invention is that a spark demand pulse is generated that is more appropriate for the prevailing battery voltage at the time the demand pulse is generated. Therefore, the process provides a more reliable approach for controlling the generation of spark at a spark plug as controlled by an ignition coil under conditions where the battery voltage may be compromised, for example for an aged battery and / or during cold engine conditions.

Systems and methods for controlling an ignition system. The ignition coil assembly has an ignition transformer with a primary winding and a secondary winding and a local control unit. The spark device is connected with the secondary winding of the ignition transformer. The local control unit is adapted to adjust an ignition timing of the ignition transformer to generate a spark at the spark device to ignite a fuel-air mixture in the engine cylinder. The central control unit is in electronic communication with the local control unit to monitor the ignition transformer.

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.

An event detection system (200) for determining occurrence of an event in an internal combustion engine (201) is disclosed, comprising: an ion current measurement circuit (107), a predetermined number of band limiter modules (203), a predetermined number of frequency domain conversion units (204), and an ion signal analyzer (206). The band limiter modules (203) generate band filtered ion current signals from received ion current signals generated during a spark event in a spark plug (106). The frequency domain conversion units (204) convert the band filtered ion current signals to a frequency domain to obtain digital ion current signals. The ion analyzer analyzes an amplitude of each of the digital ion current signals with an amplitude threshold of each of the digital ion current signals to determine occurrence of the event in the engine. Misfire detection ensures that the vehicle complies with OBD II regulatory specifications implemented by regulatory agencies.

The utility model discloses an automobile ignition intensifier, which relates to the technical field of automobile appliances, and comprises an intensifier body, a first connecting line and a second connecting line which are arranged on the intensifier body, and a fixed terminal which is fixedly arranged on the first connecting line; the wire slot is arranged on the fixed terminal in an L shape; the fixing unit comprises a clamping part and an end part fixing part, the fixing terminal is arranged between the connecting wire and the wire, and the clamping part and the end part fixing part are arranged on the fixing terminal, so that the end part of the wire can be pre-fixed in an elastic buffering manner after the wire is wound on the spring, and the wire head of the wire can be quickly fixed; and the wire end of the wire is prevented from being pulled and broken, and then the wire end of the wire is prevented from falling off through one-time rigid fixation, so that the wire can be better fixed, and the disconnection failure of the ignition intensifier and the ignition coil is prevented.

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.

The invention relates to the technical field of ignition coil manufacturing, and discloses a manufacturing method and system for an electric injection type motorcycle inductance type ignition coil, the system comprises a magnetic core assembly, a linear magnetic field excitation device, an area array electromagnetic detection unit and a control module, and the control module comprises a determination unit, a judgment unit, a correction unit and a manufacturing classification unit; the determination unit is configured to determine an initial magnetic core matching parameter according to the average inductance value; the judgment unit is configured to judge whether the coil winding of the to-be-detected ignition coil has performance abnormity or not; the correction unit is configured to correct the initial magnetic core matching parameters to obtain fine adjustment magnetic core parameters; and the manufacturing classification unit is configured to determine the manufacturing grade of the ignition coil to be detected according to the performance deviation type and quantity, and perform identification and classified packaging on qualified products. According to the invention, the magnetic core assembly can be accurately assembled, so that the performance of the ignition coil is improved.

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.

To provide an ignition control system for an internal combustion engine which can appropriately shorten a conduction time to an ignition coil which supplies electric energy to an ignition plug to suppress shortening of life of the ignition plug by temporarily shortening the conduction time to the ignition coil and determining whether there is an accidental fire or not and further decreasing a margin for individual differences and variations of the ignition coil and the ignition plug.SOLUTION: A control device controls an ignition coil for a post-correction conduction time which is determined by subtracting a correction time from a base conduction time. When an update condition for the correction time is satisfied, conduction shortening control is executed where the correction time is temporarily prolonged and the post-correction conduction time is shortened until at least one cylinder is misfired. After that, conduction extension control is executed where the correction time is temporarily shortened and the post-correction conduction time is prolonged until all the cylinders are not misfired. If all the cylinders do not misfire, the conduction extension control is ended and the correction time at the time of ending is updated to a new correction time.SELECTED DRAWING: Figure 10

This present disclosure discloses an ignition overcurrent protection device, which includes an overcurrent protection switch, a current detection circuit, and a controller. The overcurrent protection switch is electrically coupled between a starting power and a power-on connector; the power-on connector is configured for connecting to the automotive power. The current detection circuit is configured for detecting a current value flowing between the starting power and the power-on connector. The controller is coupled to the overcurrent protection switch and the current detection circuit. The controller is configured to determine a current range where the current value is located, and determine a preset time threshold corresponding to the current range, and control the overcurrent protection switch to be turned off when a duration of the current value reaches the preset time threshold. The present disclosure also provides a starting power equipment and ignition overcurrent protection. This present disclosure can set different trigger times of overcurrent protection according to difference in current during an ignition and start process. Therefore, it can be ensured that the automobile can be fired and started when there is no abnormality, and the overcurrent protection is effectively performed when there is an abnormality.

To improve detection accuracy of preignition in a spark ignition engine.SOLUTION: A processor 31 of an ECU 30 detects occurrence of pre-ignition in a spark ignition engine that ignites a mixture in a combustion chamber 13 by spark discharge through a process of calculating a rotational fluctuation amount and self-ignition start timing of the engine 10 and a process of determining that pre-ignition has occurred when the rotational fluctuation amount is equal to or larger than a predetermined threshold value and the self-ignition start timing is earlier than predetermined timing. The self-ignition start timing is the timing when the temperature of the mixture in the combustion chamber 13 during a compression stroke reaches the ignition point of the mixture.SELECTED DRAWING: Figure 1

Provided is an igniter that can reduce the occurrence of malfunction due to noise.　This igniter (100) comprises: a switch element (111) having a first end; a temperature sensor (112) including at least one diode and having a cathode end (112B); a switch element control device (12) that controls the switch element; and a switch element electrode (Pe) connected to the first end and the cathode end of the switch element, wherein the switch element control device has a ground electrode (Pgnd) electrically isolated from the cathode end.

To provide an ignition device capable of suppressing the unintended electric discharge due to ON-time voltage.SOLUTION: By switching a switching element 30 from OFF to ON at an ON time as a time when a pressure in a cylinder 91 is on the rise, an ignition device 1 starts to electrify a primary coil 21. A control part 60 sets the ON time to be later as the power supply voltage of a battery 10 gets higher. Then, on the basis of the power supply voltage and the pressure in the cylinder 91 at the ON time, it selects the power supply voltage for which it is determined that the electric discharge due to the ON-time voltage is hardly caused in a spark plug 50. This suppresses unintended electric discharge due to the ON-time voltage.SELECTED DRAWING: Figure 1

A method for estimating a wear rate of a spark plug electrode for a spark plug (20) in which a spark discharge takes place between two electrodes by applying a voltage generated by an ignition coil (11), wherein at least one of the two electrodes is a second electrode (27) containing Pt as a main component, the method comprising a second wear rate estimation step of estimating a wear rate of the second electrode (27) in a spark discharge based on a spark discharge voltage and supply power from the ignition coil (11).

A method for controlling an ignition unit for a spark plug of an internal combustion engine is provided. The ignition unit is driven by a spark demand pulse that is defined by start time point and an end time point. A voltage level of an associated engine battery at a time proximate to the start time point of the spark demand pulse is determined, and then an adjustment amount based on the determined voltage level is determined. The end time point of the determined demand pulse is adjusted by the determined adjustment amount. A benefit of the invention is that a spark demand pulse is generated that is more appropriate for the prevailing battery voltage at the time the demand pulse is generated. Therefore, the process provides a more reliable approach for controlling the generation of spark at a spark plug as controlled by an ignition unit under conditions where the battery voltage may be compromised, for example for an aged battery and / or during cold engine conditions. There is also provided an engine system having a control unit configured to implement the method, a control unit comprising a processor to carry out the method, and a computer program product embodying the method.

The invention relates to ignition coil dwell control. A method for controlling dwell time in an ignition system of an internal combustion engine is provided. In one example, a method includes adjusting dwell based on engine operating conditions, and further adjusting dwell in a manner proportional to existing spark plug condition. By continuously evaluating spark plug condition during operation of the internal combustion engine, premature wear of the spark plug can be prevented, resulting in an extended service life of the spark plug and other ignition system components.

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.

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