A six-cylinder to eight-cylinder dual-fuel engine crank monitoring device

Abstract

The present invention relates to a crank monitoring device for a six-cylinder / eight-cylinder dual-fuel engine. The monitoring device comprises an arc-shaped box body; a conductive rod made of a conductive material is provided within the box body, the conductive rod including end A and end B; a resistance rod made of a resistive material is provided within the box body, the resistance rod including end C and end D; two or more conductive sliders are provided within the box body along the circumference of the center of the circle, each having a No. 1 hole for the conductive rod to pass through and a No. 2 hole for the resistance rod to pass through. The present invention utilizes the corresponding conductive sliders to move during the rotation of the crank, forming pathways at different positions, and determines the position of the crank by changes in the current in the pathway. This device not only has a simple structure, but also does not require the participation of sensors, and does not cause signal interference during the monitoring process. It can serve as a backup solution for crank monitoring and is a simple monitoring method.

Description

Technical Field

[0001] The present invention belongs to the technical field of crank monitoring devices, and in particular relates to a crank monitoring device for a six-cylinder or eight-cylinder dual-fuel engine. Background Art

[0002] The rotation angle of the crankshaft is an important parameter for determining the ignition timing of the engine. Generally, a crank angle sensor refers to a sensor that detects the rotation angle or rotation position of the crankshaft of the engine.

[0003] Some sensors, such as magneto-electric induction sensors, need to output signals when working. The signals are easily interfered with during the transmission process, which affects the accuracy of the sensor and makes the crankshaft position monitoring prone to deviations. Summary of the Invention

[0004] The purpose of the present invention is to provide a crank monitoring device for a six-cylinder to eight-cylinder dual-fuel engine in order to solve the problems raised in the above background technology.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A six-cylinder to eight-cylinder dual-fuel engine crank monitoring device includes an arc-shaped box body;

[0007] A conductive rod made of conductive material is provided in the box body, and the conductive rod includes an end A and an end B;

[0008] A resistance rod made of resistance material is provided in the box body, and the resistance rod includes an end C and an end D;

[0009] The box body is provided with two or more conductive sliders along the circumference of the center of the circle, and the conductive sliders are provided with a No. 1 hole for the conductive rod to pass through and a No. 2 hole for the resistance rod to pass through. The conductive sliders are used to connect the conductive rod and the resistance rod during their sliding process;

[0010] The conductive slider is provided with a magnetic block for attracting the crank and a reset spring for driving the conductive slider to reset. The end of the reset spring away from the conductive slider is provided on the box body;

[0011] The end B of the conductive rod and the end C of the resistance rod are connected to a power supply and an ammeter respectively. The power supply, the ammeter, the conductive rod, the resistance rod and the conductive slider form a closed loop.

[0012] Preferably, the box body is further provided with an arc-shaped cavity, and the arc-shaped cavity is provided with two or more electromagnets which are matched one by one with the conductive slider and are used to drive the conductive slider to reset.

[0013] Preferably, the electromagnet is connected in series with an ammeter.

[0014] Preferably, an air chamber is provided in the box body, and the air chamber is provided with two or more air holes corresponding one-to-one with the sliders and connected to the inner cavity of the box body for changing the position of the slider, and the air chamber is connected to the air intake pipe of the fuel engine.

[0015] Preferably, an air cylinder is provided on the conductive slider, a No. 1 spring is provided in the air cylinder for driving the air cylinder to reset, a telescopic rod is provided at the air hole, a spray hole is provided on the side of the telescopic rod close to the conductive slider, a No. 2 spring is provided in the telescopic rod for driving it to reset, the air cylinders correspond to the telescopic rods one by one, and an air pipe is provided between the corresponding air cylinders and the telescopic rods.

[0016] Preferably, the telescopic rod is provided with a No. 1 magnet having the same magnetic properties as the magnetic block.

[0017] The beneficial effects of the present invention are:

[0018] The present invention utilizes the movement of the corresponding conductive slider during the rotation of the crank to form a path at different positions, and determines the position of the crank by the change of the current in the path. It is not only simple in structure, but also does not require the participation of sensors. There will be no signal interference problem during the monitoring process. It can be used as a backup solution for crank monitoring and is a simple monitoring method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 yes Figure 1 Enlarged schematic diagram of the middle Z;

[0021] Figure 3 It is a schematic diagram of the positional relationship between the conductive slider and the conductive rod in the present invention;

[0022] Figure 4 It is a schematic diagram of the positional relationship between the present invention and the crank.

[0023] In the figure: 1. Box body; 2. Conductive rod; 3. Resistance rod; 4. Conductive slider; 5. Hole No. 1; 6. Hole No. 2; 7. Return spring; 8. Arc-shaped cavity; 9. Electromagnet; 10. Air chamber; 11. Air hole; 12. Air cylinder; 13. Telescopic rod. DETAILED DESCRIPTION

[0024] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] like Figure 1-4 As shown, a crank monitoring device for a six-cylinder to eight-cylinder dual-fuel engine includes an arc-shaped box body 1;

[0027] A conductive rod 2 made of conductive material is provided in the box body 1, and the conductive rod 2 includes an end A and an end B;

[0028] A resistance rod 3 made of resistance material is provided in the box body 1, and the resistance rod 3 includes an end C and an end D;

[0029] The box body 1 is provided with two or more conductive sliders 4 along the circumference of the center thereof. The conductive sliders 4 are provided with a first hole 5 for the conductive rod 2 to pass through and a second hole 6 for the resistance rod 3 to pass through. The conductive sliders 4 are used to connect the conductive rod 2 and the resistance rod 3 during their sliding process.

[0030] The conductive slider 4 is provided with a magnetic block for attracting the crank and a reset spring 7 for driving the conductive slider 4 to reset. The end of the reset spring 7 away from the conductive slider 4 is provided on the box body 1.

[0031] The end B of the conductive rod 2 and the end C of the resistance rod 3 are connected to a power supply and an ammeter respectively. The power supply, the ammeter, the conductive rod 2, the resistance rod 3 and the conductive slider 4 form a closed loop.

[0032] In the above embodiment, the housing 1 is mounted on the inner wall of the crankcase. Two housings 1 can be symmetrically mounted to form a complete ring, keeping the center of the housing 1 aligned with the crank's axis of rotation. A strong magnetic material is installed at a corresponding position on the crank to interact with the magnet. As the crankshaft rotates, it attracts the magnet on the conductive slider 4. The magnet, under the influence of the magnetic attraction, moves the conductive slider 4, driving the movement of the conductive slider 4. When the conductive slider 4 reaches its maximum travel, it simultaneously contacts the conductive rod 2 and the resistor rod 3. Current generated from the power source forms a path through the resistor rod 3, the conductive slider 4, and the conductive rod 2. As the crank moves to different positions, different conductive sliders 4 move, causing the lengths of the resistor rods 3 involved in the path to vary, resulting in changes in the resistance of the path and, in turn, in the current measured by the ammeter. The different current values ​​are used to infer the position of the crank. When the crank moves away from the conductive slider 4, the return spring 7 drives the conductive slider 4 away from its maximum travel, disconnecting the path.

[0033] As a further solution of the present invention, an arc-shaped cavity 8 is further provided in the box body 1 , and two or more electromagnets 9 are provided in the arc-shaped cavity 8 , which are matched one by one with the conductive slider 4 and are used to drive the conductive slider 4 to reset.

[0034] As a further solution of the present invention, the electromagnet 9 is connected in series with an ammeter.

[0035] In the above embodiment, by providing an electromagnet 9 connected in series in the passage, the conductive slider 4 can be quickly attracted when the crank speed is fast, so that the conductive slider 4 can be quickly moved away from the conductive rod 2, reducing the occurrence of multiple conductive sliders 4 contacting the conductive rod 2 at the same time, thereby ensuring the accuracy of the monitoring results.

[0036] The series connection enables the electromagnet 9 to be energized only when the path is completed, and will not be activated when the conductive slider 4 is not in contact with the conductive rod 2, thereby avoiding affecting the movement of the conductive slider 4.

[0037] As a further solution of the present invention, an air chamber 10 is provided in the box body 1. The air chamber 10 has two or more air holes 11 corresponding to the sliders one by one and connected to the inner cavity of the box body 1 for changing the position of the slider. The air chamber 10 is connected to the air intake pipe of the fuel engine.

[0038] In the above embodiment, the gas introduced from the air inlet pipe continuously enters the air chamber 10 and overflows from the box body 1. When the crank rotates too fast, multiple conductive sliders 4 may not have time to separate from the conductive rod 2. When multiple conductive sliders 4 are in contact with the conductive rod 2, their sides close to the crank abut against the air holes 11. The airflow ejected from the air holes 11 will drive the conductive sliders 4 in a direction away from the crank. When all the air holes 11 are blocked, the gas pressure in the air chamber 10 increases, and the air holes 11 will break through the conductive sliders 4 with less squeezing force, that is, the air holes 11 will carry the conductive sliders 4 away from the crank away from the conductive rod 2. Only the conductive slider 4 closest to the crank can maintain its contact with the conductive rod 2 under the action of the air flow, allowing the gas in the air chamber 10 to flow normally, thereby avoiding the situation where the conductive sliders 4 cannot separate from the conductive rod 2.

[0039] As a further solution of the present invention, an air cylinder 12 is provided on the conductive slider 4, and a No. 1 spring is provided in the air cylinder 12 to drive the air cylinder 12 to reset. A telescopic rod 13 is provided at the air hole 11, and a spray hole is provided on the side of the telescopic rod 13 close to the conductive slider 4. A No. 2 spring is provided in the telescopic rod 13 to drive it to reset. The air cylinder 12 corresponds to the telescopic rod 13 one by one, and an air pipe is provided between the corresponding air cylinder 12 and the telescopic rod 13.

[0040] As a further solution of the present invention, the telescopic rod 13 is provided with a No. 1 magnet having the same magnetic properties as the magnetic block.

[0041] In the above embodiment, the crank causes the conductive slider 4 to displace, thereby simultaneously displacing the gas cylinder 12. Upon contacting the conductive rod 2, the gas cylinder 12 is compressed and shortened, and the gas within it is ejected through the air pipe and out of the telescopic rod 13, thereby enabling the conductive slider 4 to reset more quickly. Furthermore, the first magnet on the telescopic rod 13 and the magnetic block on the conductive slider 4 have the same magnetic properties, creating a mutual repulsive force. As the telescopic rod 13 drives the first magnet closer to the magnetic block, the reset speed of the conductive slider 4 is further accelerated.

[0042] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A crank monitoring device for a six-cylinder to eight-cylinder dual-fuel engine, characterized by: It includes an arc-shaped box body (1); A conductive rod (2) made of conductive material is provided in the box body (1), and the conductive rod (2) includes an end A and an end B; A resistance rod (3) made of resistance material is provided in the box body (1), and the resistance rod (3) includes an end C and an end D; Two or more conductive sliders (4) are provided in the box body (1) along the circumference of the center of the circle. The conductive sliders (4) are provided with a first hole (5) for the conductive rod (2) to pass through and a second hole (6) for the resistance rod (3) to pass through. The conductive sliders (4) are used to connect the conductive rod (2) and the resistance rod (3) during the sliding process. The conductive slider (4) is provided with a magnetic block for attracting the crank and a reset spring (7) for driving the conductive slider (4) to reset. The end of the reset spring (7) away from the conductive slider (4) is provided on the box body (1); The end B of the conductive rod (2) and the end C of the resistance rod (3) are connected to a power supply and an ammeter, respectively. The power supply, the ammeter, the conductive rod (2), the resistance rod (3) and the conductive slider (4) form a closed loop. The box body (1) is further provided with an arc-shaped cavity (8), and the arc-shaped cavity (8) is provided with two or more electromagnets (9) which are paired with the conductive slider (4) one by one and are used to drive the conductive slider (4) to reset. An air chamber (10) is provided in the box body (1), and the air chamber (10) is provided with two or more air holes (11) corresponding one-to-one to the sliders and communicating with the inner cavity of the box body (1) for changing the position of the sliders. The air chamber (10) is communicated with the air intake pipe of the fuel engine; The conductive slider (4) is provided with an air cylinder (12), a spring No. 1 for driving the air cylinder (12) to return to its original position is provided in the air cylinder (12), a telescopic rod (13) is provided at the air hole (11), a spray hole is provided on the side of the telescopic rod (13) close to the conductive slider (4), a spring No. 2 for driving the telescopic rod (13) to return to its original position is provided in the telescopic rod (13), the air cylinder (12) and the telescopic rod (13) are in one-to-one correspondence, and an air pipe is provided between the corresponding air cylinder (12) and the telescopic rod (13).

2. The crank monitoring device for a six-cylinder to eight-cylinder dual-fuel engine according to claim 1, characterized in that: The electromagnet (9) is connected in series with the ammeter.

3. The crank monitoring device for a six-cylinder to eight-cylinder dual-fuel engine according to claim 1, characterized in that: The telescopic rod (13) is provided with a No. 1 magnet having the same magnetic properties as the magnetic block.

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