A multiple ignition module

Abstract

The invention discloses a multiple ignition module, comprising a primary winding L1, a transistor Q1, a trigger F, an oscillator T and a transistor Q2, wherein one end of the primary winding L1 is connected to a positive electrode of a power supply, and the other end is connected to a collector of the transistor Q1, an emitter of the transistor Q1 is connected to a negative electrode of a power supply, a base of the transistor Q1 is connected to an ignition signal output end of an automobile ECU, an input end fi of the trigger F is connected to the collector of the transistor Q1, an output end fo of the trigger F is connected to an input end ti of the oscillator T, an output end to of the oscillator T is connected to a base of the transistor Q2, a collector of the transistor Q2 is connected to a collector of the transistor Q1, and an emitter of the transistor Q2 is connected to the negative electrode of the power supply, so that multiple ignitions of an automobile can be realized, thereby improving the ignition efficiency and stability of the vehicle.

Description

Technical Field

[0001] The invention belongs to the technical field of engine ignition, and in particular relates to a multiple ignition module. Background Art

[0002] As a major means of transportation, cars are indispensable in people's daily work and life in today's society. With the continuous development and updating of the automobile industry, most of the ignition coils used in cars have been changed to pen-type structures. This type of ignition coil is directly connected to the spark plug through a rubber sheath. The product is small in size, strong in electromagnetic compatibility, high in output voltage, and higher in combustion efficiency. It is the development trend of ignition coils.

[0003] However, the existing ignition coils often have insufficient ignition energy under low engine speed conditions, which is insufficient to ignite the fuel in the cylinder so that the fuel can be fully burned. The insufficient ignition energy affects the engine power and fuel utilization. However, due to the size limitation of the ignition coil, it is impossible to improve the ignition energy by increasing the iron core of the ignition coil or increasing the winding to improve the secondary voltage, and it is very difficult to increase the ignition energy by changing the structure of the ignition coil. Summary of the invention

[0004] The purpose of the present invention is to provide a multiple ignition module, which is intended to solve the technical problems existing in the background technology.

[0005] To solve the above technical problems, the purpose of the present invention is achieved as follows:

[0006] A multiple ignition module comprises a primary winding L1, a transistor Q1, a trigger F, an oscillator T and a transistor Q2, wherein one end of the primary winding L1 is connected to a positive electrode of a power supply, and the other end is connected to a collector of the transistor Q1, an emitter of the transistor Q1 is connected to a negative electrode of a power supply, a base of the transistor Q1 is connected to an ignition signal output end of an automobile ECU, an input end fi of the trigger F is connected to the collector of the transistor Q1, an output end fo of the trigger F is connected to an input end ti of the oscillator T, an output end to of the oscillator T is connected to a base of the transistor Q2, a collector of the transistor Q2 is connected to a collector of the transistor Q1, and an emitter of the transistor Q2 is connected to the negative electrode of the power supply.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the trigger is a divide-by-two frequency trigger.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a filtering circuit is further provided between the input end of the trigger F and the collector of the transistor Q1.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the positive power input terminal of the trigger F is connected to the positive pole of the power supply, and the negative power input terminal is connected to the negative pole of the power supply.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the output terminal to of the oscillator T is initially in a low level state.

[0011] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: the automobile ECU generates an ignition signal, turns on the transistor Q1, energizes the primary winding L1 of the ignition coil, and generates a high-voltage ignition voltage on the secondary winding L2; since the input end of the trigger F is connected to the primary winding L1, a voltage signal will be generated on the primary winding L1 when the transistor Q1 is cut off, the trigger input end fi detects the electrical signal, and outputs a high level at its output end fo, so that the oscillator is powered on and starts to oscillate, and the initial potential of the oscillator T is set to zero potential. Since the charging capacitor in the oscillator T needs a certain charging time, the oscillator T will output a high level at its output end to after a certain time delay after power-on, so that the transistor Q2 is turned on. When the transistor Q2 is triggered to turn on, the primary winding L1 is The secondary power is turned on, and the secondary winding L2 generates a high-voltage ignition voltage for the second time (it should be noted that the present application uses the time difference between the two ignitions caused by the charging time to make the two adjacent ignitions have a suitable time gap); then the oscillator T flips so that its output end to flips to a low level, and the transistor Q2 is cut off; similarly, a voltage signal is also generated on the primary winding L1, and the trigger F receives the second voltage signal. The trigger F can be selected as a two-way frequency, a four-way frequency or other frequency division number to realize the control of the number of ignitions. For example, the trigger F is selected as a two-way frequency trigger, then when the second voltage signal comes, the output end of the trigger F will flip from a high level to a low level, so that the oscillator T is turned off, and a secondary ignition cycle ends; wait for the next car ECU ignition signal, and repeat this cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution in the embodiment will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of this application, not all embodiments. Based on the given embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0014] In the description of the present application, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0015] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0016] A multiple ignition module comprises a primary winding L1, a transistor Q1, a trigger F, an oscillator T and a transistor Q2, wherein one end of the primary winding L1 is connected to a positive electrode of a power supply, and the other end is connected to a collector of the transistor Q1, an emitter of the transistor Q1 is connected to a negative electrode of a power supply, a base of the transistor Q1 is connected to an ignition signal output end of an automobile ECU, an input end fi of the trigger F is connected to the collector of the transistor Q1, an output end fo of the trigger F is connected to an input end ti of the oscillator T, an output end to of the oscillator T is connected to a base of the transistor Q2, a collector of the transistor Q2 is connected to a collector of the transistor Q1, and an emitter of the transistor Q2 is connected to the negative electrode of the power supply.

[0017] The positive power input terminal of the trigger F is connected to the positive pole of the power supply, and the negative power input terminal is connected to the negative pole of the power supply; and the trigger is further preferably a divide-by-two trigger. In this embodiment, a D trigger in the prior art is preferably used to realize the divide-by-two function. The specific divide-by-two circuit is undoubtedly the same as the prior art, and will not be described in detail here.

[0018] Further preferably, in order to avoid other noises from interfering with the operation of the trigger F, a filter circuit is preferably provided between the input end of the trigger F and the collector of the transistor Q1. It should be noted that the filter circuit in the present embodiment is a prior art, and only needs to meet the required filter frequency according to the selection of component parameters. Of course, a voltage limiting or voltage reducing circuit can also be set according to the voltage of the electrical signal generated by the specific primary coil to make the voltage received by the trigger F within a suitable range.

[0019] Further preferably, the oscillator T is also implemented by an oscillator circuit composed of a D flip-flop, and the initial potential of the output terminal to of the oscillator T is set to zero potential, so that the ignition time of the pillow can have an appropriate ignition time difference each time it is started and ignited multiple times, thereby meeting the actual ignition requirements. It should be noted that the oscillator circuit of the oscillator T in this embodiment is the same as the prior art.

[0020] Of course, it should also be noted that, in this embodiment, a power supply circuit is also provided to provide appropriate voltages to the trigger F and the oscillator D, thereby providing the trigger F and the oscillator D with power that meets their requirements.

[0021] The working principle of this embodiment is as follows: the automobile ECU generates an ignition signal, turns on the transistor Q1, energizes the primary winding L1 of the ignition coil, and generates a high-voltage ignition voltage on the secondary winding L2; since the input end of the trigger F is connected to the primary winding L1, a voltage signal will be generated on the primary winding L1 when the transistor Q1 is cut off, and the trigger input end fi detects the electrical signal and outputs a high level at its output end fo, so that the oscillator is powered on and starts to oscillate, and the initial potential of the oscillator T is set to zero potential. Since the charging capacitor in the oscillator T needs a certain charging time, this makes the oscillator T output a high level at its output end to after a certain time of power-on delay, so that the transistor Q2 is turned on, and the primary winding L1 is energized for the second time when the transistor Q2 is triggered to turn on. , the secondary winding L2 generates a high-voltage ignition voltage for the second time (it should be noted that the present application uses the time difference between the two ignitions caused by this charging time to make the two adjacent ignitions have a suitable time gap); then the oscillator T flips so that its output end to flips to a low level, and the transistor Q2 is cut off; similarly, a voltage signal is also generated on the primary winding L1, and the trigger F receives the second voltage signal. The trigger F can be selected as a two-way frequency division, a four-way frequency division or other frequency division numbers to realize the control of the number of ignitions. For example, the trigger F is selected as a two-way frequency division trigger, then when the second voltage signal is generated, the output end of the trigger F will flip from a high level to a low level, so that the oscillator T is turned off, and a secondary ignition cycle ends; wait for the next car ECU ignition signal, and repeat this cycle.

[0022] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multiple ignition module, comprising a primary winding L1, characterized in that: The invention comprises a transistor Q1, a trigger F, an oscillator T and a transistor Q2, wherein one end of the primary winding L1 is connected to the positive electrode of the power supply, and the other end is connected to the collector of the transistor Q1, the emitter of the transistor Q1 is connected to the negative electrode of the power supply, the base of the transistor Q1 is connected to the ignition signal output end of the automobile ECU, the input end fi of the trigger F is connected to the collector of the transistor Q1, the output end fo of the trigger F is connected to the input end ti of the oscillator T, and the output end to of the oscillator T is connected to the ignition signal output end of the automobile ECU. The base of the transistor Q2 is connected, the collector of the transistor Q2 is connected to the collector of the transistor Q1, the emitter of the transistor Q2 is connected to the negative electrode of the power supply, the trigger is a two-way frequency trigger, a filter circuit is also provided between the input end of the trigger F and the collector of the transistor Q1, the positive power input end of the trigger F is connected to the positive electrode of the power supply, the negative power input end is connected to the negative electrode of the power supply, the trigger F is a D trigger, and the output end to of the oscillator T is initially in a low level.

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