Direct insertion type high-voltage wire structure of engine

Abstract

The utility model relates to the technical field of gas engines, in particular to an engine direct insertion type high-voltage wire structure which penetrates through a cylinder head cover to be installed on a cylinder head, the cylinder head cover is installed on the cylinder head, and the engine direct insertion type high-voltage wire structure comprises an ignition coil, a high-voltage wire, a high-voltage sleeve and a cylinder head sheath. The top of the high-voltage sleeve penetrates through the top face of the cylinder head cover and is connected with the ignition coil, the other end of the high-voltage sleeve is installed in the cylinder head, the ignition coil is installed on the top face of the cylinder head cover, the cylinder head sheath is installed in the cylinder head and located below the high-voltage sleeve, a spark plug is arranged in the cylinder head sheath, and the high-voltage wire is located in the high-voltage sleeve. And one end of the internal spring of the high-voltage lead is conducted with the spark plug, and the other end of the internal spring of the high-voltage lead is conducted with the ignition coil, so that the problems that the high-voltage lead in the current market is of a lead structure, the ignition coil is externally arranged, the lead needs to penetrate through a sleeve after being connected, and the outer high-voltage lead and the ignition coil are untight in sealing and poor in contact are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas engines, in particular to an engine direct-insertion type high-voltage wire structure. Background Art

[0002] Due to the advantages of clean fuel, relatively low price and high emission level of gas engines, gas engines have gradually occupied a place in the entire commercial vehicle field and are becoming increasingly popular among users. Gas engines require high-voltage wire sleeves to isolate the high-voltage wires from the oil and gas in the cylinder cover.

[0003] At present, the high-voltage wires on the market are of a wire-belt structure, where the ignition coil is external and needs to be connected before passing through the bushing. There is a lack of sealing and poor contact between the outer high-voltage wire and the ignition coil installation. The dust-proof performance and installation reliability of this structure cannot meet the requirements when used in mining areas, so an engine direct-plug high-voltage wire structure is proposed. Utility Model Content

[0004] The utility model provides an engine direct-insertion high-voltage wire structure, which cancels the outer wire structure, improves the installation reliability and dustproof reliability of the engine, and enables the engine to be applied to relatively harsh working environments such as mining areas.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an engine direct-plug high-voltage wire structure, which passes through a cylinder head cover and is installed on the cylinder head, the cylinder head cover is installed on the cylinder head, and includes an ignition coil, a high-voltage wire, a high-voltage bushing and a cylinder head sleeve, the top of the high-voltage bushing passes through the top surface of the cylinder head cover and is connected to the ignition coil, and the other end is installed in the cylinder head, the ignition coil is installed on the top surface of the cylinder head cover, the cylinder head sleeve is installed in the cylinder head, the cylinder head sleeve is located below the high-voltage bushing, a spark plug is arranged in the cylinder head sleeve, the high-voltage wire is located in the high-voltage bushing, one end of the internal spring of the high-voltage wire is connected to the spark plug, and the other end is connected to the ignition coil.

[0006] Preferably, a mounting lug is provided on the top surface of the cylinder head cover, a mounting bracket is provided on the mounting lug, the ignition coil is mounted on the mounting bracket, and the high-voltage bushing passes through the mounting lug and the mounting bracket to be connected to the ignition coil.

[0007] Preferably, a through hole penetrating the cylinder head is provided on the lower bottom surface of the cylinder head, the cylinder head sleeve is installed in the through hole, and also includes a spark plug sleeve, the inner wall of the spark plug sleeve is provided with an internal thread, the outer wall of the spark plug is provided with an external thread, the external thread of the outer wall of the spark plug matches the internal thread of the inner wall of the spark plug sleeve, the spark plug is installed in the spark plug sleeve by threaded connection, and the spark plug sleeve is located in the cylinder head sleeve.

[0008] Preferably, a rubber sheath is provided on the upper part of the high-voltage wire, the rubber sheath covers the high-voltage wire, the rubber sheath is located between the ignition coil and the mounting bracket, and forms a seal with the ignition coil and the mounting bracket.

[0009] The beneficial effects of adopting the above technical solution are:

[0010] The rubber sheath is installed between the mounting bracket and the ignition coil, and an effective seal can be formed between the contact surfaces, with better sealing performance.

[0011] The present application directly connects the ignition coil to the high-voltage bushing, which reduces wire connections and can meet the requirements of use in harsh working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0013] Figure 2 It is a main schematic diagram of the utility model;

[0014] Figure 3 It is a right side schematic diagram of the utility model;

[0015] Figure 4 for Figure 3 AA section view in the figure;

[0016] Figure 5 It is a schematic diagram of the connection relationship between the high-voltage conductor and the high-voltage bushing.

[0017] The symbols in the figure correspond to: 1-cylinder head cover, 2-cylinder head, 3-ignition coil, 4-high-voltage wire, 5-high-voltage bushing, 6-cylinder head sleeve, 7-mounting ear, 8-mounting bracket, 9-spark plug, 10-spark plug sleeve, 11-internal spring, 12-rubber sleeve. DETAILED DESCRIPTION

[0018] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0019] Specifically, Figure 1-Figure 5 As shown, an engine direct-insertion high-voltage wire structure is installed on the cylinder head 2 through a cylinder head cover 1, the cylinder head cover 1 is installed on the cylinder head 2, and includes an ignition coil 3, a high-voltage wire 4, a high-voltage bushing 5 and a cylinder head cover 6. A mounting lug 7 is provided on the top surface of the cylinder head cover 1, a mounting bracket 8 is provided on the mounting lug 7, the ignition coil 3 is installed on the mounting bracket 8, the top of the high-voltage bushing 5 passes through the mounting lug 7 and the mounting bracket 8 to be connected with the ignition coil 3, and the lower part is installed in the cylinder head 2, a through hole penetrating the cylinder head 2 is provided on the lower bottom surface of the cylinder head 2, a cylinder head cover 6 is provided in the through hole, the cylinder head cover 6 is located below the high-voltage bushing 5, and inside the cylinder head cover 6 A spark plug 9 and a spark plug sleeve 10 are also provided. The inner wall of the spark plug sleeve 10 is provided with an internal thread, and the outer wall of the spark plug 9 is provided with an external thread. The external thread of the outer wall of the spark plug 9 matches the internal thread of the inner wall of the spark plug sleeve 10. The spark plug sleeve 10 is installed on the top of the spark plug 9 through a threaded connection. A high-voltage wire 4 is provided in the high-voltage sleeve 5. One end of the internal spring 11 of the high-voltage wire 4 is connected to the spark plug 9, and the other end is connected to the ignition coil 3. A rubber sheath 12 is provided on the upper part of the high-voltage wire 4. The rubber sheath 12 covers the high-voltage wire 4. The rubber sheath 12 is located between the ignition coil 3 and the mounting bracket 8, and forms an effective seal between the ignition coil 3 and the mounting bracket 8.

[0020] First, fix the ignition coil 3 on the mounting bracket 8 by bolts, install the mounting lug 7 on the top of the cylinder head cover 1, and install the mounting bracket 8 on the mounting lug 7. Install the mounting bracket 8 and the gasket on the cylinder head cover 1 by screws. A rubber sheath 12 is provided on the upper part of the high-voltage wire 4. The rubber sheath 12 covers the high-voltage wire 4. The rubber sheath 12 is located between the ignition coil 3 and the mounting bracket 8 and is used to seal the gap between the mounting conduit 5 and the ignition coil 3. The spark plug sleeve 10 is installed in the cylinder head sleeve 6. The spark plug sleeve 10 is installed on the top of the spark plug 9 through a threaded connection. The high-voltage wire 4 is installed in the high-voltage sleeve 5. The internal spring 11 of the high-voltage wire 4 is connected with the ignition coil 3 and the spark plug 9 to realize the conduction of large current. In the case of harsh working environment such as mining areas, the straight-insertion high-voltage conduit reduces the connection of the wires, improves the dustproofness and sealing performance, and enables it to work more stably and reliably.

[0021] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above-mentioned concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An engine direct-insertion high-voltage wire structure, which passes through a cylinder head cover and is installed on a cylinder head, wherein the cylinder head cover is installed on the cylinder head, and is characterized in that: The invention comprises an ignition coil, a high-voltage wire, a high-voltage bushing and a cylinder head sleeve. The top of the high-voltage bushing passes through the top surface of the cylinder head cover and is connected to the ignition coil, and the other end is installed in the cylinder head. The ignition coil is installed on the top surface of the cylinder head cover. The cylinder head sleeve is installed in the cylinder head. The cylinder head sleeve is located below the high-voltage bushing. A spark plug is arranged in the cylinder head sleeve. The high-voltage wire is located in the high-voltage bushing. One end of the internal spring of the high-voltage wire is connected to the spark plug, and the other end is connected to the ignition coil.

2. The engine direct-insertion high-voltage wire structure according to claim 1, characterized in that: A mounting lug is arranged on the top surface of the cylinder head cover, a mounting bracket is arranged on the mounting lug, the ignition coil is mounted on the mounting bracket, and the high-voltage bushing passes through the mounting lug and the mounting bracket and is connected to the ignition coil.

3. The engine direct-insertion high-voltage wire structure according to claim 1, characterized in that: A connection hole penetrating the cylinder head is provided on the lower bottom surface of the cylinder head, the cylinder head sleeve is installed in the connection hole, and also includes a spark plug sleeve, the inner wall of the spark plug sleeve is provided with an internal thread, the outer wall of the spark plug is provided with an external thread, the external thread of the outer wall of the spark plug matches the internal thread of the inner wall of the spark plug sleeve, the spark plug is installed in the spark plug sleeve by threaded connection, and the spark plug sleeve is located in the cylinder head sleeve.

4. The engine direct-insertion high-voltage wire structure according to claim 1, characterized in that: A rubber sheath is arranged on the upper part of the high-voltage wire, the rubber sheath covers the high-voltage wire, the rubber sheath is located between the ignition coil and the mounting bracket, and forms a seal with the ignition coil and the mounting bracket.

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