KR20220100318A - Dual ignition coil for vehicle and control method - Google Patents

Abstract

The present invention relates to an ignition coil for a vehicle, comprising: an input unit (10) to which battery power of a vehicle is transmitted; a housing (20) in which a first transformer (21) and a second transformer (22) are installed to boost an input vehicle battery voltage to a high voltage; a control unit (40) configured integrally with the first and second transformers (21, 22) to individually control the first and second transformers (21, 22) to output a boosted high voltage; and an output unit (30) outputting the voltage boosted by the first and second transformers (21, 22). By installing two transformers in one cylinder and applying a multi-ignition method accordingly, there is an effect of improving an output energy of an engine. As a controller for controlling dual ignition coils is integrally configured, there is an effect of miniaturizing parts.

Description

Dual ignition coil for automobile and its control method

The present invention relates to a dual ignition coil for a vehicle and a method for controlling the same.

The ignition coil boosts the battery voltage of the vehicle to a high voltage of several tens of KV at the ignition timing of the car engine's controller, and supplies high voltage and ignition energy to the spark plug to ignite and burn the mixed gas in the combustion chamber with an electric flame. Since high voltage must be supplied all the time, durability is an important engine component.

In a general ignition coil, one transformer capable of generating a high voltage is installed per cylinder, and when a high voltage is generated by one ignition coil, there is a limit to improve the output, so the efficiency of improving fuel efficiency is lowered.

Laid-Open Patent Publication No. 10-2011-0105240, 'Ignition device for internal combustion engine having multiple ignition coils and spark plugs'

Accordingly, it is an object of the present invention to provide a dual ignition coil for automobiles and a control method thereof, which can improve output energy in a multi-ignition method by installing two transformers in one cylinder.

In accordance with the above object, the present invention provides an ignition coil for a vehicle, an input unit 10 to which battery power of the vehicle is transmitted, a first transformer 21 for boosting the inputted vehicle battery voltage to a high voltage, and a second transformer The housing 20 in which the 22 is installed and the first and second transformers 21 and 22 are integrally configured to individually control the first and second transformers 21 and 22 to output the boosted high voltage. It is characterized in that it is composed of a control unit 40, and an output unit 30 that outputs the voltage boosted by the first and second transformers 21 and 22.

In addition, in the control method of an ignition coil for a vehicle, the steps of setting the operation mode of the dual ignition coil in which the first and second transformers 21 and 22 are installed, and the operation mode for each RPM section under the control of the ECU of the vehicle A single mode (45) that controls to be set automatically, but sets that only one of the first and second transformers (21, 22) is ignited, and the first and second transformers (21, 22) Simultaneous ignition dual mode (46), which is set to ignite simultaneously In the step of controlling to be set, and when the output energy is insufficient due to insufficient combustion due to the first ignition of the first and second transformers 21 and 22, additional ignition is generated and multiple ignition of the transformer to improve the output Setting the number of times, setting the charging time to be variably adjusted so that the electric current delivered to the first and second transformers 21 and 22 is boosted to a high voltage to ignite the first and second transformers; It characterized in that it consists of; setting the discharge time in which the current is not transmitted until the next ignition timing after the current is charged in the transformers 21 and 22 to be ignited and variably adjusted.

According to the present invention, the output energy of the engine can be improved by installing two transformers in one cylinder and applying the multi-ignition method through this, and as the controller for controlling the dual ignition coil is integrated and configured, parts There is an effect that the miniaturization of the

1 is a view showing the configuration of a dual ignition coil for a vehicle according to an embodiment of the present invention;
2 is a view showing the configuration of a housing of a dual ignition coil for a vehicle according to an embodiment of the present invention;
3 is a block diagram illustrating a control configuration of a dual ignition coil for a vehicle according to an embodiment of the present invention;
4 is a view for explaining a detailed control configuration of a control unit according to an embodiment of the present invention;
5 is a view for explaining an operating configuration of a dual ignition coil for a vehicle according to an embodiment of the present invention;
6 is a flowchart illustrating a method for controlling a dual ignition coil for a vehicle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, the operation configuration of a general ignition coil will be omitted or simplified.

1 is an overall configuration diagram for explaining a dual ignition coil for a vehicle according to an embodiment of the present invention, and FIG. 2 is a view showing a form in which first and second transformers 21 and 22 are installed, and FIG. 3 is a block diagram schematically illustrating the configuration of a dual ignition coil for a vehicle according to the present invention.

The dual ignition coil for a vehicle of the present invention includes an input unit 10 to which battery power of the vehicle is transmitted, and a housing ( 20) and the first and second transformers 21 and 22, and individually control the first and second transformers 21 and 22, while controlling the charging and discharging according to the control signal of the ECU. and a control unit 40 and an output unit 30 for outputting the voltage boosted by the first and second transformers 21 and 22 .

The input unit 10 is a connector for inputting the battery voltage of the vehicle to the ignition coil, and boosts the input vehicle battery voltage to a high voltage by the first and second transformers 21 and 22 and transmits it to generate a spark. do.

Looking at the configuration of the housing 20, first and second chambers 23 and 24 in which the first and second transformers 21 and 22 can be separately installed are formed, and the first and second Transformers 21 and 22 may be respectively installed in the control unit 40 .

That is, the two first and second transformers 21 and 22 are integrally formed in one control unit 40 , and the voltage input by one input unit 10 is applied to the first and second transformers 21 . ) (22), the voltage is boosted to a high voltage, and the boosted high voltage is output through the output unit (30) to cause ignition.

4 is a block diagram for explaining the control configuration of the first and second transformers 21 and 22 by the control unit 40 of the present invention.

The control unit 40 of the present invention includes an operation mode setting unit 41 that sets an operation mode through the charging and discharging timing control of the dual ignition coil composed of the first and second transformers 21 and 22, and the first, When ignition by the second transformers 21 and 22, the multi-ignition setting unit 42 sets the number of multiple ignitions additionally ignited when sufficient output energy for combustion is insufficient due to the first ignition, and a transformer according to the ignition timing The charging time setting unit 43 variably sets the charging time at which a high voltage is generated by allowing a current to flow to the It is composed of a discharge time setting unit 44 to set to.

The operation mode setting unit 41 sets the operation mode of the ignition coil composed of the first and second transformers 21 and 22, and includes a single mode 45, a simultaneous ignition dual mode 46, and a sequential ignition dual mode. It is set to operate in mode (47).

To explain this, the single mode 45 in which only one of the first and second transformers 21 and 22 is ignited, and the first and second transformers 21 and 22 are set to ignite at the same time It may be composed of a simultaneous ignition dual mode 46, and a sequential ignition dual mode 47 in which the first and second transformers 21 and 22 are sequentially ignited at a time interval.

The single mode 45 is set to ignite only one of the first and second transformers 21 and 22, and at this time, one of the two transformers is controlled to be always ignited, and the single mode 45 operates It is preferable that the multi-ignition is also made.

The maximum fuel efficiency can be secured only by ignition by one transformer in a specific section when the engine is driven, and in this case, when both transformers are operated, energy is wasted. to control ignition.

In the present invention, in order to improve the output of the engine, the first and second transformers 21 and 22 are set to operate in dual mode. Ignition can be controlled in dual mode when high output is required in a low RPM section or a high load section, and the operation mode is automatically set for each RPM section under the control of the ECU.

The simultaneous ignition dual mode 46 allows the ignition to be simultaneously performed by the first and second transformers 21 and 22, so that the output of the engine is improved by the simultaneous ignition and the compressed mixed gas in the combustion chamber can be completely burned. It has the effect of improving fuel efficiency.

The sequential ignition dual mode 47 is to improve the disadvantage that ignition is discontinuous during charging and discharging in the simultaneous ignition dual mode 46, and the first and second transformers 21 and 22 are sequentially ignited By making it happen, the output is made continuously.

To this end, the first and second transformers 21 and 22 are set to be sequentially ignited at a time interval, and as shown in FIG. By igniting the second transformer (22), continuous ignition can be achieved.

The sequential ignition dual mode 47 may have a lower maximum output compared to the simultaneous ignition dual mode 46, but has the advantage that the output is continuously performed. , it is desirable to set automatically by the control signal of the ECU according to the load conditions, etc.

In the present invention, the ignition between the first transformer 21 and the second transformer 22 is sequentially ignited by charging and igniting the second transformer 22 at the discharge time after the first transformer 21 is charged and ignited. The ignition delay time setting unit 48 for setting the delay time interval may be configured.

The ignition delay time setting unit 48 is a delay time in which the ignition is performed after the electric current flows through the first transformer 21 and is charged after the ignition is performed and then the electric current flows through the second transformer 22 at the discharge time. By setting the interval, the ignition interval between the first transformer 21 and the second transformer 22 is adjusted.

Referring back to FIG. 4 , the multi-ignition setting unit 42 sets the number of ignitions by the first and second transformers 21 and 22, and sets the number of additional ignitions after the initial ignition occurs. will do

When sufficient combustion energy is not generated by the initial ignition, the number of times for additional ignition to occur is set.

In addition, the number of multiple ignitions has the advantage of improving the output as the number of multiple ignitions is set, but the energy input to the first and second transformers 21 and 22 also increases. It is recommended to set them separately and then control them so that they can be set automatically.

The charging time setting unit 43 sets the charging time for ignition by allowing current to flow through the first and second transformers 21 and 22, and the characteristics of the installed transformer, engine characteristics, RPM, and load conditions. It is set so that the charging time is variably adjusted according to the like.

The discharge time setting unit 44 sets a discharge time in which no current flows until the next ignition time after the first and second transformers 21 and 22 are ignited, and the characteristics of the installed transformer, the characteristics of the engine, It is set so that the discharge time is variably adjusted according to the RPM and load conditions.

Hereinafter, a method of controlling a dual ignition coil for a vehicle according to the present invention will be described with reference to FIG. 6 .

First, the operation mode of the dual ignition coil in which the first and second transformers 21 and 22 are installed is set. Mode (47) is controlled to operate by setting.

In this case, the operation modes of the first and second transformers 21 and 22 may be controlled such that the operation modes are automatically set for each RPM section under the control of the ECU.

The single mode (45) setting is set so that only one transformer among the first and second transformers (21) and (22) is ignited, and the simultaneous ignition dual mode (46) setting is set to the first and second transformers (21) (22) is set to be ignited at the same time, and the sequential ignition dual mode (47) is set so that the first and second transformers 21 and 22 are sequentially ignited.

At this time, when the first and second transformers 21 and 22 are controlled to operate by the sequential ignition dual mode 47 setting, the time interval in which the first transformer 21 and the second transformer 22 are sequentially ignited The ignition delay time is set, and since the ignition of the first and second transformers 21 and 22 is sequentially generated, continuous output is possible.

After setting the operation mode of the first and second transformers 21 and 22, the number of multiple ignitions of the transformer is set, and when the output energy is insufficient due to insufficient combustion due to the first ignition, additional ignition is generated. This will improve the output.

Next, a charging time in which the current delivered to the first and second transformers 21 and 22 is boosted to a high voltage to ignite, and the first and second transformers 21 and 22 are charged with current After ignition is made, the discharge time is set so that no current is transmitted until the next ignition timing.

The charging time and discharging time may be set so that the charging time is variably adjusted according to the characteristics of the transformer, the characteristics of the engine, RPM, load conditions, and the like.

Although specific embodiments have been described in the above description of the present invention, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be defined by the claims and equivalents to the claims.

(10)-- input
(20)-- Housing (21)-- Transformer 1
(22)-- 2nd transformer (23)-- 1st chamber
(24)-- 2nd chamber
(30)-- Output
(40)-- Control unit (41)-- Operation mode setting unit
(42)-- Multi-ignition setting unit (43)-- Charging time setting unit
(44)-- Discharge time setting unit (45)-- Single mode
(46)-- Simultaneous ignition dual mode (47)-- Sequential ignition dual mode
(48)-- Delay time setting part

Claims (5)

In the ignition coil for a car,
An input unit 10 to which the vehicle's battery power is transmitted, and
A housing 20 in which the first transformer 21 and the second transformer 22 for boosting the inputted vehicle battery voltage to a high voltage are installed;
a control unit 40 integrally formed with the first and second transformers 21 and 22 to individually control the first and second transformers 21 and 22 to output a boosted high voltage;
and an output unit (30) outputting the voltage boosted by the first and second transformers (21, 22).
According to claim 1,
The control unit 40 includes an operation mode setting unit 41 for setting an operation mode through charging and discharging timing control of the dual ignition coil composed of the first and second transformers 21 and 22;
When ignition by the first and second transformers 21 and 22, the multi-ignition setting unit 42 for setting the number of multiple ignitions additionally ignited when the output energy sufficient for combustion is insufficient for the first single ignition;
A charging time setting unit 43 for variably setting a charging time for generating a high voltage by allowing a current to flow through the transformer according to the ignition timing;
A dual ignition coil for automobiles, characterized in that it comprises a discharge time setting unit (44) that variably sets a discharge time during which a high voltage is not generated by preventing current from flowing during a waiting time until the next ignition time after ignition.
According to claim 1,
The operation mode setting unit 41 has a single mode 45 for setting only one of the first and second transformers 21 and 22 to be ignited,
Simultaneous ignition dual mode 46 for setting the first and second transformers 21 and 22 to be ignited at the same time;
A dual ignition coil for a vehicle, characterized in that it is configured in a sequential ignition dual mode (47) in which the first and second transformers (21, 22) are sequentially ignited at a time interval.
A method for controlling an ignition coil for a vehicle, the method comprising:
setting an operation mode of the dual ignition coil in which the first and second transformers 21 and 22 are installed;
A single mode 45 that sets the operation mode to be automatically set for each RPM section under the control of the ECU of the vehicle, and sets only one transformer among the first and second transformers 21 and 22 to ignite; Simultaneous ignition dual mode 46 in which the first and second transformers 21 and 22 are ignited simultaneously Controlling to be automatically set to any one of the operating modes of the mode (47);
Setting the number of multiple ignitions of the transformer so that when the output energy is insufficient due to the first ignition of the first and second transformers 21 and 22, ignition is additionally generated to improve the output;
Setting the charging time for ignition to be variably adjusted by boosting the current delivered to the first and second transformers 21 and 22 to a high voltage;
After the first and second transformers 21 and 22 are ignited after the current is charged and the discharge time is variably adjusted, the discharge time during which the current is not transmitted until the next ignition timing is variably adjusted. Control method of ignition coil.
5. The method of claim 4,
In the step of setting the first and second transformers 21 and 22 to the sequential ignition dual mode 47,
By setting the ignition delay time, which is a time interval in which the first transformer 21 and the second transformer 22 are sequentially ignited, the ignition of the first and second transformers 21 and 22 is continuously made and sequentially generated. A control method of a dual ignition coil for a vehicle, characterized in that it consists of; setting to enable continuous output.

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