27results about "Other installations" patented technology

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

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.

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 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.

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

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 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.

An ignition coil protection control method, comprising: measuring the temperature of an ignition module; if the temperature of the ignition module is greater than or equal to a first set temperature value, reducing the charging duration of an ignition coil until the temperature of the ignition module is less than the first set temperature value; and if the temperature of the ignition module is less than the first set temperature value, determining the charging duration of the ignition coil on the basis of an engine speed, the value of direct current voltage, and a preset mapping relationship. Also disclosed are a storage medium, an engine ignition system, and a vehicle.

A pre-chamber ignition apparatus for an internal combustion engine comprising an apparatus body associable with the cylinder head of an internal combustion engine for communicating with a combustion chamber of the cylinder head through at least one connection hole, a microwave ignition device for generating microwaves to cause ignition of an air / fuel mixture in a pre-chamber formed within the apparatus body. The apparatus body comprises an upstream portion configured to allow the housing and fixing of the microwave ignition device and a hollow downstream or head portion, delimiting the pre-chamber, in fluid communication with the combustion chamber. The downstream portion is provided with at least one connection hole. The hollow downstream portion includes a reflection wall opposite the microwave ignition device and shaped to receive and concentrate microwaves generated by the microwave ignition device and / or a resonance cavity for the mixture contained in the pre-chamber thereby amplifying the combustion in the pre-chamber.

To enable an engine to perform the fundamental thermal efficiency and performance of the engine quickly and sufficiently when changing an operating state during an operation mode to travel on engine drive force.SOLUTION: In a hybrid vehicle having an engine 10 for supplying drive force for travel and rotary electric machines 30, 40 for supplying drive force for travel, the engine 10 is an auxiliary chamber-type engine, and includes, as transition control when changing an operation state from a first operating point to a second operating point during an operation mode to travel on drive force of the engine 10: a firing stop step to stop ignition and fuel injection of the engine 10 while operating at the first operating point; a motoring step to reach the second operating point as target by drive force of the rotary electric machines 30, 40; and a firing start step to start firing on the engine 10 with an air volume and a fuel volume corresponding to the second operating point. Further, in the transition control, a fuel injection volume from a direct injection-type fuel injection device is decreased than in starting the engine.SELECTED DRAWING: Figure 1

Control device (1) for an internal combustion engine (100) comprising the following: an ignition control unit (83) that controls the excitation of a first ignition coil (300a) and a second ignition coil (300b), each of which provides electrical energy to a spark plug (200) that discharges into a cylinder (150) of an internal combustion engine (100) to ignite a fuel; and a discharge quantity detection unit (360) that detects a voltage between the electrodes of the spark plug (200), wherein the ignition control unit (83), after the ignition control unit (83) has discharged the spark plug (200) using the electrical energy of the first ignition coil (300a), estimates a voltage that can be supplied to the spark plug (200) from the first ignition coil (300a), and controls the excitation of the second ignition coil (300b) such that the electrical energy of the second ignition coil (300b) is supplied to the spark plug (200) when a difference between the estimated supplyable voltage and a voltage required to maintain the discharge of the spark plug (200) based on the voltage detected by the discharge quantity detection unit (360) is less than or equal to a predetermined threshold.

The application provides a kind of ignition control method of carburetor type aviation piston engine, obtains performance parameter and inquires preset parameter table to obtain ignition energy basic value and ignition advance angle basic value;Again, the correction value of ignition energy basic value is calculated according to performance parameter, and the corrected ignition energy calculation value is converted into ignition pulse width by the discharge voltage of ignition controller;The correction value of ignition advance angle basic value is calculated according to performance parameter, and the sum of correction value data is the ignition advance angle calculation value of ignition output;Finally, the engine is ignited according to ignition pulse width and ignition advance angle. Ensure that the engine ignition control system obtains the best ignition pulse width calculation value and ignition advance angle calculation value under different working conditions, so that the engine is in the best working condition.

An ignition system for an engine of a vehicle, an engine and a method for controlling combustion in a lean burn engine are disclosed. The ignition system comprises: a spark plug comprising: a ground electrode and a center electrode electrically connected to an ignition coil, wherein the spark plug ignites a mixture of fuel and air in a normal mode of the engine; a high speed pulse generator for igniting the mixture of fuel and air in a lean burn mode of the engine; a pulse generator controller for controlling the high speed pulse generator to ignite the mixture of fuel and air in the lean burn mode of the engine; an engine control unit determines the normal mode and the lean burn mode based on an engine speed and an engine load, and controls the ignition of the pulse generator controller and the spark plug based on the determined mode in the normal mode and the lean burn mode.

The present disclosure relates to powertrain control based on auxiliary battery characteristics. A powertrain control system may include an engine and a controller. The controller may be configured to activate an automatic stop-start system of the engine in response to a maximum difference in battery voltage values ​​remaining less than a threshold value during a period in which the number of engine stop-start cycles exceeds a limit.

The utility model discloses a passive ignition module with a temperature protection function. The passive ignition module comprises an ignition control unit, a Darlington tube connected to the output end of the ignition control unit, and a temperature protection module with one end connected to the base electrode of the Darlington tube. The Darlington tube is connected with the ignition coil; the ignition control unit is used for controlling the Darlington tube to be switched on or switched off according to ECU signals so as to achieve the ignition function of the ignition coil. The other end of the temperature protection module is connected to the ECU signal input end; and the Darlington tube and the temperature protection module are separately arranged. According to the utility model, the Darlington tube and the temperature protection module adopt a discrete scheme, so that the stability and the reliability are ensured, the cost advantage is realized, and the popularization is facilitated. When the temperature of the Darlington tube is lower than a temperature protection threshold value, the ignition control unit can control the Darlington tube to work completely according to an accessed ECU signal; when the temperature of the Darlington tube is equal to or higher than the temperature protection threshold value, the temperature protection module controls the Darlington tube not to be conducted.

This hybrid vehicle (60) has a series travel mode and a parallel travel mode. In the series travel mode, the air-fuel mixture to be introduced into a combustion chamber (C) of an engine (10) is set to a first air-fuel ratio, and the ignition timing is set to a first ignition timing. In the parallel travel mode, the air-fuel mixture to be introduced into the combustion chamber (C) is set to a second air-fuel ratio that is richer in fuel than the first air-fuel ratio, and the ignition timing is set to a second ignition timing that is more retarded than the first ignition timing.