Pen holder type ignition coil with feedback signal

Abstract

The penholder type ignition coil with the feedback signal comprises a top end and a penholder portion, a circuit board with a chip (including a control and temperature chip) is installed in an inner cavity of the top end through a partition plate, and an iron core, a framework, a coil winding and a high-voltage connector are installed in an inner cavity of the penholder portion. The temperature chip monitors the temperature in real time and feeds back the temperature to the ECU to achieve multi-stage temperature control protection, the high-pressure connector cooperates with the spring through the positioning disc to provide stable contact pressure, and the penholder part isolates high voltage from overflowing through the annular limiting sleeve and the plugging ring. According to the utility model, the problems of chip failure, unstable high-voltage transmission and the like caused by high temperature are solved, the reliability, adaptability and safety of an ignition system are improved, and support is provided for intelligent management of an engine.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile engine ignition system, concretely relates to a penholder type ignition coil with feedback signal penholder. BACKGROUND

[0002] The penholder type ignition coil is used for modern engine, and its structure comprises a shell, a coil winding, a circuit board and a high-voltage connector.

[0003] The circuit board (containing a control chip) of the existing penholder type ignition coil is usually encapsulated in the metal shell, and the temperature of the engine cylinder (especially under high load conditions) can reach more than 100°C. Long-term high temperature can cause the chip to work unstably (affecting the accuracy of the ignition signal), shorten the service life and even fail, and the ECU cannot accurately obtain the state of the ignition coil. In addition, the contact stability of the high-voltage connector and the connecting parts directly affects the reliability of high-voltage power transmission, and the existing structure is prone to ignition abnormalities due to vibration or contact resistance. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a penholder type ignition coil capable of real-time temperature monitoring and linkage control, which improves reliability and prolongs service life through temperature monitoring and intelligent protection mechanism, and provides temperature data support for engine management.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a penholder type ignition coil with feedback signal, comprising a top end and a penholder part; a partition is arranged in the inner cavity of the top end, a circuit board with a chip is arranged on the upper end face of the partition, an iron core, a framework, a coil winding and a high-voltage connector are arranged in the inner cavity of the penholder part, the framework is sleeved on the iron core, the coil winding is wound on the framework, the high-voltage connector is electrically connected with the coil winding, and the circuit board is electrically connected with the coil winding; a temperature chip is integrated on the circuit board, the front end and the rear end of the partition are connected with the inner wall of the inner cavity of the top end, and the left end and the right end of the partition are arranged at intervals with the inner wall of the inner cavity of the top end, and the temperature chip is electrically connected with the automobile ECU through the circuit board; the penholder part is integrally connected with a ring-shaped limiting sleeve, a plugging ring is sleeved on the lower end of the ring-shaped limiting sleeve, an annular plugging groove is arranged on the lower end face of the plugging ring, and the plugging ring is plugged on the plug hole end face of the engine cylinder; a positioning disc is arranged on the lower end of the high-voltage connector, a spring positioning groove is arranged on the lower end face of the positioning disc, one end of a spring is abutted in the spring positioning groove, and the other end of the spring extends to the outlet end of the penholder part.

[0006] The interval distance between the left end and the right end of the partition and the inner wall of the inner cavity of the top end is 3mm-8mm.

[0007] The plugging ring is made of high-temperature-resistant rubber material.

[0008] The temperature chip is used for collecting temperature data around the circuit board in real time, and transmits the temperature signal to the automobile ECU through the circuit board, and the automobile ECU executes the following control strategy according to the temperature range: normal ignition when the temperature < 80°C; adjusting the ignition advance angle or reducing the ignition energy when the temperature is 80-100°C; closing the corresponding cylinder ignition or starting the cooling strategy when the temperature > 100°C.

[0009] Wherein the key improvement points are:

[0010] 1. Temperature monitoring structure: a temperature chip (for real-time monitoring of ambient temperature) is integrated on the circuit board, the front and rear ends and the top end of the inner wall of the inner cavity are connected, and the left and right ends are spaced apart from the inner wall (to ensure that the temperature chip accurately senses the surrounding temperature), and the temperature chip is electrically connected to the automobile ECU through the circuit board;

[0011] 2. High-voltage isolation structure: the pen shaft is integrally connected with a ring-shaped limiting sleeve, the limiting sleeve is sleeved with a plugging ring at the lower end, and the lower end face of the plugging ring is provided with a ring-shaped plugging groove, and the plugging ring is plugged at the end face of the engine cylinder hole (to isolate high-voltage overflow).

[0012] The beneficial effects of the utility model are:

[0013] 1. The temperature chip monitors the temperature in real time and feeds back to the ECU, and through multi-stage temperature control strategy (normal / early warning / dangerous temperature corresponds to different regulation and control actions), the chip overheating failure is prevented, and the service life is prolonged;

[0014] 2. The spring and the high-voltage connector cooperate to provide stable contact pressure, reduce contact resistance and vibration influence, and ensure reliable transmission of high-voltage electricity;

[0015] 3. The plugging ring isolates high-voltage overflow to improve safety in use;

[0016] The ECU dynamically adjusts the ignition strategy (such as adjusting the ignition advance angle, reducing the ignition energy) according to the temperature, or triggers the protection mechanism (closes the cylinder ignition, starts the cooling strategy), and improves the stability in extreme working conditions;

[0017] 4. Temperature data support is provided for intelligent management of the engine.

[0018] The utility model will be further described below in combination with the drawings and specific embodiments. DRAWINGS

[0019] Figure 1 It is a perspective view of the specific embodiment of the utility model;

[0020] Figure 2 It is a sectional view of the specific embodiment of the utility model.

[0021] Explanation of reference signs: 1-top end, 2-pen barrel part, 3-baffle, 4-circuit board, 5-iron core, 6-skeleton, 7-coil winding, 8-high-voltage connector, 9-annular limiting sleeve, 10-plugging ring, 11-plugging groove. DETAILED DESCRIPTION

[0022] The utility model will be specifically described below through examples, which are only used for further illustrating the utility model and cannot be understood as limiting the protection scope of the utility model.

[0023] As shown in Figure 1 , Figure 2 , the embodiment discloses a pen barrel type ignition coil with feedback signal, which comprises a top end 1 and a pen barrel part 2;The inner cavity of the top end 1 is provided with a baffle 3, the upper end face of the baffle 3 is provided with a circuit board 4 (containing control chip and temperature chip) with chip, the control chip is used for receiving ECU ignition instruction and outputting ignition signal, and the temperature chip is used for collecting ambient temperature in real time (such as through thermistor induction). The front and rear ends of the baffle 3 are welded and fixed with the left and right inner walls of the inner cavity of the top end 1, and the left and right ends are reserved with 5mm gap with the inner wall (to ensure that the air around the temperature chip circulates, and accurately reflect the real temperature), the inner cavity of the pen barrel part 2 is provided with an iron core 5, a skeleton 6, a coil winding 7 and a high-voltage connector 8, the skeleton 6 is sleeved on the iron core 5, the coil winding 7 is wound on the skeleton 6, the high-voltage connector 8 is electrically connected with the coil winding 7, and the circuit board 4 is electrically connected with the coil winding 7;The temperature chip is electrically connected with ECU through the circuit on the circuit board 4 (real-time transmission of temperature data). The outer wall of the pen barrel part 2 is integrally formed with an annular limiting sleeve 9 (extending downward), which is used for making the circuit board as far away from the engine cylinder body as possible, so that the chips on the circuit board are less affected by heat, the lower end of the limiting sleeve 9 is sleeved with a plugging ring 10 (rubber material), and the lower end face of the plugging ring 10 is provided with an annular plugging groove 11 (closely fitted with the plug hole end face of the engine cylinder body), which is used for isolating high-voltage electric overflow and preventing the risk of electric leakage;The lower end of the high-voltage connector 8 is provided with a positioning disc 12, the lower end face of the positioning disc 12 is provided with a spring positioning groove 13, one end of a spring 14 abuts in the spring positioning groove 13, and the other end extends to the outlet end of the pen barrel part 2.

[0024] The high-voltage connector and the spring cooperate with each other to realize stable transmission and reliable connection of high-voltage electricity. The spring provides stable contact pressure and buffer protection for the high-voltage connector, ensures that the high-voltage connector is in close contact with the connecting part, reduces the contact resistance and vibration influence, and the high-voltage connector is responsible for accurately transmitting the high-voltage electricity generated by the ignition coil to the spark plug. The cooperative work of the two guarantees that the ignition system can stably and reliably operate under various working conditions, and provides strong support for the normal work of the engine.

[0025] The interval distance between the left and right ends of the baffle 3 and the inner wall of the inner cavity of the top end 1 is 3mm-8mm.

[0026] The blocking ring 10 is made of high-temperature-resistant rubber.

[0027] Working process: The temperature chip is used to collect temperature data around the circuit board 4 in real time, and transmit the temperature signal to the automobile ECU through the circuit board 4. The automobile ECU executes the following control strategy according to the temperature range: when the temperature is < 80°C, the ECU controls the ignition according to the normal instruction; when the temperature is 80-100°C, the ECU adjusts the ignition advance angle or reduces the ignition energy to reduce heat; when the temperature is > 100°C, the corresponding cylinder ignition is turned off or the cooling strategy is started, and the fault code is recorded and the instrument warning light is lit.

[0028] The above technical scheme can achieve the following technical effects:

[0029] 1. The temperature chip monitors the temperature in real time and feeds back to the ECU, and through multi-stage temperature control strategy (normal / early warning / dangerous temperature corresponds to different regulation and control actions), the chip overheating failure is prevented, and the service life is prolonged;

[0030] 2. The spring and the high-voltage connector cooperate to provide stable contact pressure, reduce contact resistance and vibration influence, and ensure reliable transmission of high-voltage electricity;

[0031] 3. The blocking ring isolates the high-voltage electricity overflow, and improves the safety in use;

[0032] The ECU dynamically adjusts the ignition strategy (such as adjusting the ignition advance angle, reducing the ignition energy), or triggers the protection mechanism (turning off the cylinder ignition, starting the cooling strategy), to improve the stability in extreme working conditions;

[0033] 4. Temperature data support is provided for intelligent management of the engine.

Claims

1. A pencil bobbin ignition coil with a feedback signal, characterized by, The utility model relates to a kind of temperature sensor, including top (1) and pen barrel part (2);The top (1) inner cavity is equipped with baffle (3), the upper end surface of baffle (3) is equipped with circuit board (4) with chip, pen barrel part (2) inner cavity is equipped with iron core (5), framework (6), coil winding (7) and high-voltage connector (8), the framework (6) is sleeved on the iron core (5), the coil winding (7) is wound on the framework (6), the high-voltage connector (8) is electrically connected with the coil winding (7), the circuit board (4) is electrically connected with the coil winding (7);Temperature chip is integrated on the circuit board (4), the front and rear ends of baffle (3) are connected with the inner wall of top (1) inner cavity, left and right ends are spaced apart from the inner wall of top (1) inner cavity, and the temperature chip is electrically connected with automobile ECU by circuit board (4);Pen barrel part (2) is integrally connected with annular limiting sleeve (9), the lower end of annular limiting sleeve (9) is sleeved with plugging ring (10), the lower end surface of plugging ring (10) is equipped with annular plugging groove (11), and plugging ring (10) is plugged on the plug hole end surface of engine cylinder body;The lower end of high-voltage connector (8) is equipped with positioning disc (12), the lower end surface of positioning disc (12) is equipped with spring positioning groove (13), one end of spring (14) is abutted in spring positioning groove (13), and the other end extends to the outlet end of pen barrel part (2).

2. The pencil coil with feedback signal according to claim 1, characterized in that, The interval distance between the left and right ends of the baffle (3) and the inner wall of the top (1) inner cavity is 3 mm-8 mm.

3. The pencil coil with feedback signal according to claim 1, characterized in that, The plugging ring (10) is made of high-temperature-resistant rubber material.

4. The pencil bobbin coil with feedback signal according to claim 1, characterized in that, The temperature chip is used to collect temperature data around the circuit board (4) in real time, and transmit temperature signals to the automobile ECU through the circuit board (4). The automobile ECU executes the following control strategies according to the temperature range: normal ignition when the temperature is less than 80°C; adjust the ignition advance angle or reduce the ignition energy when the temperature is between 80-100°C; turn off the corresponding cylinder ignition or start the cooling strategy when the temperature is greater than 100°C.

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