阅读说明：本技术 一种点火模块 (Ignition module ) 是由 张新建 于 2020-05-27 设计创作，主要内容包括：一种点火模块。点火线圈里面有两组线圈,初级线圈一端与车上低压电源联接,另一端与开关装置联接；火花塞是把高压导线送来的脉冲高压电放电,击穿火花塞两电极间空气,产生电火花以此引燃气缸内的混合气体；点火控制器是根据微机发出的指令信号,通过内部大功率三极管的导通与截止来控制点火线圈初级绕组电路的通断,使点火线圈产生高压电；点火信号发生器通过一定的方式将汽车发动机曲轴转过的角度或活塞在气缸的位置转换成相应的电脉冲信号；电控单元的作用是根据发动机各传感器输入的信息和内存的数据及程序。本发明根据各相关传感器信号,判断发动机的运行工况和运行条件,改善发动机的燃烧过程,提高发动机动力性、经济性和降低排放污染。(An ignition module. Two groups of coils are arranged in the ignition coil, one end of the primary coil is connected with a low-voltage power supply on the vehicle, and the other end of the primary coil is connected with a switching device; the spark plug discharges pulse high-voltage electricity sent by a high-voltage wire to break down air between two electrodes of the spark plug to generate electric spark to ignite mixed gas in the cylinder; the ignition controller controls the on-off of the primary winding circuit of the ignition coil through the on-off of the internal high-power triode according to an instruction signal sent by the microcomputer, so that the ignition coil generates high voltage electricity; the ignition signal generator converts the rotating angle of the crankshaft of the automobile engine or the position of the piston in the cylinder into corresponding electric pulse signals in a certain mode; the electronic control unit is used for controlling the engine according to information input by various sensors of the engine and data and programs stored in the memory. The invention judges the operation condition and the operation condition of the engine according to the signals of all the relevant sensors, improves the combustion process of the engine, improves the dynamic property and the economical efficiency of the engine and reduces the emission pollution.)

1. An ignition module, characterized in that it includes ignition coil, spark plug, ignition controller, ignition signal generator, electronic control unit ECU:

1. ignition coil

The ignition coil is internally provided with two groups of coils, namely a primary coil and a secondary coil, wherein the primary coil uses a thick enameled wire, the secondary coil uses a thin enameled wire, one end of the primary coil is connected with an on-board low-voltage power supply, the other end of the primary coil is connected with a switching device, one end of the secondary coil is connected with the primary coil, and the other end of the secondary coil is connected with the output end of a high-voltage wire to output high-voltage electricity;

2. spark plug

The spark plug discharges pulse high-voltage electricity sent by a high-voltage wire to break down air between two electrodes of the spark plug to generate electric spark to ignite mixed gas in the cylinder;

3. ignition controller

The ignition controller controls the on-off of the primary winding circuit of the ignition coil through the on-off of the internal high-power triode according to an instruction signal sent by the microcomputer, so that the ignition coil generates high voltage electricity;

4. ignition signal generator

The ignition signal generator converts the rotation angle of the crankshaft of the automobile engine or the position of the piston in the cylinder into corresponding electric pulse signals in a certain mode, and finally sends the electric pulse signals to the electronic controller to control the on-off of a primary circuit to generate ignition signals;

electronic control unit ECU

The electronic control unit is used for carrying out operation, processing and judgment according to information input by each sensor of the engine and data and programs of the memory, and then outputting instructions to control the electronic ignition controller, so that the aim of accurately controlling the ignition of the engine is fulfilled.

2. An ignition module as defined in claim 1, wherein said primary coil is wound with about 200 and about 500 turns of about 0.5-1 mm enameled wire.

Technical Field

The invention relates to the field of automobile parts, in particular to an ignition module.

Background

The ignition module is also called as an ignition controller, and can select a metal probe or an ultraviolet photosensitive tube to be matched for use according to different requirements of environments, so that automatic ignition, flame indication, flameout alarm and automatic signal transmission work can be realized. The ignition module has the characteristics of small volume, light weight, strong ignition, sensitive reaction and the like, and can be widely used for monitoring flame generated by gas or liquid in various industries and carrying out flameout protection.

The electronic ignition system is completely different from the mechanical ignition system, and is provided with an electronic control device for ignition, and an ignition control curve chart (MAP graph) required by the engine under various working conditions is arranged in the electronic control device. The working state of the engine is judged by a series of sensors such as an engine speed sensor, an air inlet pipe vacuum degree sensor (an engine load sensor), a throttle position sensor, a crankshaft position sensor and the like, the ignition advance angle required by the engine in the working state is found on a MAP, and ignition is carried out according to the requirement. The ignition request is corrected based on the knock sensor signal to operate the engine at the optimum ignition timing.

Disclosure of Invention

The invention has the beneficial effects that: the invention provides an ignition module.

In order to solve the technical problems, the invention provides the following technical scheme:

an ignition module comprises an ignition coil, a spark plug, an ignition controller, an ignition signal generator and an electronic control unit ECU:

1. ignition coil

The ignition coil is internally provided with two groups of coils, namely a primary coil and a secondary coil, wherein the primary coil uses a thick enameled wire, the secondary coil uses a thin enameled wire, one end of the primary coil is connected with an on-board low-voltage power supply, the other end of the primary coil is connected with a switching device, one end of the secondary coil is connected with the primary coil, and the other end of the secondary coil is connected with the output end of a high-voltage wire to output high-voltage electricity;

2. spark plug

The spark plug discharges pulse high-voltage electricity sent by a high-voltage wire to break down air between two electrodes of the spark plug to generate electric spark to ignite mixed gas in the cylinder;

3. ignition controller

The ignition controller controls the on-off of the primary winding circuit of the ignition coil through the on-off of the internal high-power triode according to an instruction signal sent by the microcomputer, so that the ignition coil generates high voltage electricity;

4. ignition signal generator

The ignition signal generator converts the rotation angle of the crankshaft of the automobile engine or the position of the piston in the cylinder into corresponding electric pulse signals in a certain mode, and finally sends the electric pulse signals to the electronic controller to control the on-off of a primary circuit to generate ignition signals;

5. electronic control unit ECU

The electronic control unit is used for carrying out operation, processing and judgment according to information input by each sensor of the engine and data and programs of the memory, and then outputting instructions to control the electronic ignition controller, so that the aim of accurately controlling the ignition of the engine is fulfilled.

Preferably, the primary coil is wound with about 200-.

Compared with the prior art, the invention has the following beneficial effects: the invention judges the operation condition and the operation condition of the engine according to the signals of all related sensors, and selects the optimal ignition advance angle to ignite the mixed gas, thereby improving the combustion process of the engine, realizing the improvement of the dynamic property and the economical efficiency of the engine and the reduction of the emission pollution.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1, an ignition module is configured as follows:

1. ignition coil

A typical ignition coil has two sets of coils, a primary coil and a secondary coil, inside it. The primary coil is wound by a thicker enameled wire, and is usually wound by about 200-; the secondary coil is made of a thinner enameled wire. One end of the primary coil is connected with a low-voltage power supply (+) on the vehicle, and the other end is connected with a switching device (a breaker). One end of the secondary coil is connected with the primary coil, and the other end of the secondary coil is connected with the output end of the high-voltage wire to output high-voltage electricity.

The ignition coil is divided into an open magnetic type and a closed magnetic type according to a magnetic circuit. The traditional ignition coil is of an open magnetic type, an iron core of the traditional ignition coil is formed by laminating silicon steel sheets of about 0.3 mm, and a secondary coil and a primary coil are wound on the iron core. The closed magnetic type adopts an iron core similar to the shape III to wind a primary coil, and a secondary coil is wound outside the primary coil, and magnetic lines of force form a closed magnetic circuit by the iron core. The closed magnetic ignition coil has the advantages of less magnetic leakage, less energy loss and small volume, so that the electronic ignition system is generally adopted.

Ignition coil-double cylinder ignition mode

The double-cylinder ignition mode refers to the condition that two cylinders share one ignition coil, so that the ignition mode can only be used on an engine with an even number of cylinders. If on a 4-cylinder engine, when two cylinder pistons approach the top dead center simultaneously (one is compression and the other is exhaust), two spark plugs share the same ignition coil and are ignited simultaneously, at this time, one is effective ignition and the other is ineffective ignition, the former is in a high-pressure low-temperature gas mixture, and the latter is in a low-pressure high-temperature exhaust gas, so that the resistance between the spark plug electrodes of the two spark plugs is completely different, the generated energy is different, and the energy of the effective ignition is much larger and accounts for about 80% of the total energy.

Ignition coil-single ignition mode

The individual ignition mode is to assign an ignition coil to each cylinder, which is mounted directly on top of the spark plug, thus also eliminating the high voltage line. The ignition mode realizes accurate ignition through a camshaft sensor or monitoring cylinder compression, and is suitable for engines with any cylinder number, particularly for engines with 4 valves per cylinder. Because the spark plug and ignition coil combination can be installed in the middle of a double overhead camshaft (DOHC), the gap space is fully utilized. Because of canceling distributor and high-voltage line, energy conduction loss and leakage loss are minimum, there is no mechanical wear, and the ignition coil and the spark plug of each cylinder are assembled together, and the external metal is wrapped, electromagnetic interference is greatly reduced, and the normal work of the engine electric control system can be ensured.

2. Spark plug

Spark plugs (spark plugs), commonly known as nozzles, discharge a pulse high voltage from a high voltage wire (nozzle wire) to break down the air between the two electrodes of the spark plug, thereby igniting the mixture in the cylinder. Basic conditions of high-performance engines: high energy stable spark, uniformly mixed gas and high compression ratio.

2.1. Function and function of spark plug for automobile

The spark plug is used for introducing high voltage (more than 1 ten thousand volts) generated by an ignition coil into an engine cylinder to generate sparks between the electrodes of the spark plug to ignite the mixture. The working environment of the spark plug is extremely severe, taking the spark plug of a common four-stroke gasoline engine as an example, the temperature is only 60 ℃ and the pressure is 90KPa during the intake stroke; when the ignition combustion is carried out, the temperature can be instantly raised to 3000 ℃, and the pressure reaches 4000 KPa; the alternating frequency of the rapid cooling and the rapid heating is very high, which is not enough to be handled by common materials, and the insulation performance is ensured, so the material requirements of the spark plug are very strict. The key part of the spark plug is an insulator, if the insulator does not work, high voltage electricity can be taken down in a 'shunt' way without entering the ground through two poles, and no spark phenomenon is caused. The insulator of the spark plug must have good mechanical properties and the ability to withstand high voltages, high temperature shock, and chemical corrosion, and the conventional spark plug is mostly made of alumina-based ceramics. The size of the spark plug is uniform all over the world and can be used universally on any automobile, but because of the difference in the types of gasoline engines, the spark plug can be divided into two basic types, namely a cold type and a hot type. The cold type is a relative term to the hot type, which reflects the thermal performance of the spark plug. The spark plug can work well only when the temperature is proper and can work normally without carbon deposit. Practice has shown that when the spark plug insulator is maintained at a temperature of 500 ℃ and 600 ℃, oil droplets falling on the insulator can be immediately burnt off without forming carbon deposit, the temperature is higher than the temperature, the ignition is early, and the temperature is lower than the temperature, the carbon deposit is formed. The temperatures may vary from engine to engine and designers use the length of the insulator skirt to resolve this conflict.

2.2. Kind of spark plug

According to the difference of heat value, there are cold type and hot type;

the skirt part of the insulator is short, the heating area is small, the heat transfer distance is short, and the heat dissipation is easy, so the skirt part is low in temperature, is called as a cold type spark plug, and is suitable for a high-speed high-compression-ratio high-power engine; some spark plugs with long insulator skirts have large heating area, long heat transfer distance, difficult heat dissipation and high skirt temperature, are called thermal spark plugs and are suitable for low-power engines with medium-low speed and low compression ratio.

In addition, in order to suppress interference of the ignition system of the automobile with the radio, a resistance type and a shield type spark plug have been produced. The resistance type spark plug is a spark plug with a built-in 5-10k omega resistor, and the shielding type spark plug is a spark plug which shields and seals the whole spark plug by a metal shell. The shielding spark plug can not only prevent radio interference, but also be used in waterproof and explosion-proof occasions.

3. Ignition controller

The ignition controller is an actuator of an engine control system and is used for controlling the on-off of a primary winding circuit of an ignition coil through the on-off of an internal high-power triode according to an instruction signal sent by a microcomputer, so that the ignition coil generates high voltage. The ignition module has the characteristics of small volume, light weight, strong ignition, sensitive response and the like, and can be widely used for monitoring flame generated by gas or liquid in various industries and carrying out flameout protection. The internal structures of various engine igniters are different, some engines are not provided with igniters, and the high-power triode is directly arranged in the Electronic Control Unit (ECU); some igniters only have a Darlington triode which only plays a role of a switch, and other electronic control elements are integrated with the electronic controller; some igniters have the functions of constant current control, closed angle control, cylinder judgment, ignition monitoring and the like besides the switching function. The ignition controller replaces the contact of the traditional ignition system interrupt device, shapes and amplifies the ignition signal output by the ignition signal generator, and converts the ignition signal into an ignition control signal to control the on and off of the current in the primary winding of the ignition coil, so that high voltage is generated in the winding of the secondary coil to ignite the spark plug. The basic circuit of the ignition controller comprises a shaping circuit, a switching signal amplifying circuit, a power output circuit and the like.

4. Ignition signal generator

The sensor converts the non-electric quantity into electric quantity, converts the angle of the crankshaft of the automobile engine or the position of the piston in the cylinder into corresponding electric pulse signals in a certain mode, and finally sends the electric pulse signals to the electronic controller to control the on-off of the primary circuit and generate ignition signals. The signal generator is usually installed inside the distributor, and the commonly used signal generator includes three types, namely an electromagnetic induction type signal generator, a hall type signal generator and a photoelectric type signal generator.

5. Electronic control unit ECU

The electronic control unit is used for carrying out operation, processing and judgment according to information input by each sensor of the engine and data and programs of the memory, and then outputting instructions to control the electronic ignition controller, so that the aim of accurately controlling the ignition of the engine is fulfilled.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.