Built-in oil duct of double-cylinder engine

Abstract

The utility model discloses a built-in oil duct of a double-cylinder engine, which relates to the technical field of engines and comprises an upper box, an oil supply hole communicated with a bottom sprayer is arranged on the upper box, a first hole is arranged on a longitudinal middle partition plate of the upper box, a third hole is arranged on a transverse middle partition plate of the upper box, and a second hole is arranged on a lateral edge of the upper box. An outer oil duct of the double-cylinder diesel engine is changed into a built-in design, so that the built-in type diesel engine outer oil duct is reasonable in structure, safe, reliable, simple and convenient to operate and convenient to maintain, assembly time is effectively shortened, external connecting pieces are reduced, quality and efficiency are improved, cost is reduced, and the built-in type diesel engine outer oil duct is suitable for popularization and application. The oil leakage phenomenon at the joint of the bottom oil injection pipe outside the tank is thoroughly avoided, the reliability and maintainability of the double-cylinder diesel engine are improved, the after-sales maintenance and travel expenses are reduced, the cost is saved, the design is compact, a plurality of pipelines are reduced, and the appearance effect is attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a built-in oil passage for a double-cylinder engine. Background Art

[0002] The BDA20F two-cylinder diesel engine could not work for a long time because the cylinder liner was prone to overheating. The overheating of the cylinder liner and piston was reduced by adding a built-in bottom spray through an external oil pipe. However, it was found with use that adding a bottom spray through an external oil pipe had major hidden dangers in actual applications. The leakage at the connection of the oil pipe outside the box was serious. The reason was that due to space limitations, the effective length of the threaded connection between the external oil circuit and the box body was insufficient, which easily caused damage and loosening of the thread. At the same time, the processing part of the installation part added to the box body had casting structural defects, which easily caused incomplete threads in the hole and insufficient thread locking force. In addition, due to space limitations, there was no maintenance space at the installation part of the external oil channel. Once an oil leakage failure occurred, it could only be dismantled for maintenance.

[0003] In view of this major quality risk, in order to improve the reliability and maintainability of the two-cylinder diesel engine, the external oil channel design was changed to an internal oil channel. To this end, we proposed the internal oil channel for the two-cylinder engine. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a built-in oil passage for a twin-cylinder engine, which solves the problem that in actual applications, the external oil pipe connection of the twin-cylinder engine has leakage, posing a major technical risk to quality.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The built-in oil passage of a twin-cylinder engine comprises an upper box, the upper box is provided with an oil supply hole communicated with the bottom spray, the longitudinal middle partition of the upper box is provided with a No. 1 hole, the transverse middle partition of the upper box is provided with a No. 3 hole, the side edge of the upper box is provided with a No. 2 hole, the surface of the upper box is provided with a No. 4 hole, the No. 1 hole is communicated with the No. 4 hole and is used to guide the oil from the main oil passage, the No. 3 hole is connected with the No. 1 hole and is used to guide the oil from the main oil passage to the side edge, the No. 2 hole is communicated with the No. 3 hole, a deep hole communicated with the oil supply hole is arranged in the upper box, and the No. 3 hole is connected with the deep hole.

[0009] Preferably, the length of the deep hole is 178 mm.

[0010] Preferably, the number of the oil supply holes is two.

[0011] (III) Beneficial effects

[0012] 1. Changing the external oil channel of the twin-cylinder diesel engine to an internal design has a reasonable structure, is safe and reliable, is easy to operate and maintain, effectively reduces assembly time, reduces external connectors, improves quality and efficiency, and reduces costs.

[0013] 2. It completely eliminates the oil leakage at the connection of the fuel injection pipe at the bottom of the box, improves the reliability and maintainability of the two-cylinder diesel engine, reduces after-sales maintenance and travel expenses, and saves costs.

[0014] 3. The built-in oil circuit is simple and reliable to install, easy to maintain, easy to operate, reduces oil leakage points, and can be widely used in various types of engines.

[0015] 4. The design is compact, and many pipelines are reduced, with beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0017] Figure 1 This is the structural diagram of the fourth hole of the utility model;

[0018] Figure 2 This is a structural diagram of hole No. 1 of the utility model;

[0019] Figure 3 It is the structural diagram of the deep hole of the utility model.

[0020] Legend: 1. Hole No. 1; 2. Hole No. 2; 3. Hole No. 3; 4. Hole No. 4; 5. Oil supply hole; 6. Upper box; 7. Deep hole. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a built-in oil passage for a twin-cylinder engine, which effectively solves the problem of adding bottom injection to an existing twin-cylinder engine with an external oil pipe. In actual applications, there is leakage at the connection of the external oil pipe of the twin-cylinder engine, which poses a major quality risk. The built-in oil passage of the twin-cylinder engine changes the external oil passage of the twin-cylinder diesel engine into a built-in one. The design structure is reasonable, safe and reliable, easy to operate and maintain, effectively reduces assembly time, reduces external connecting parts, improves quality and efficiency, reduces costs, and completely eliminates the oil leakage at the connection of the bottom injection pipe outside the box, improves the reliability and maintainability of the twin-cylinder diesel engine, reduces after-sales maintenance and travel expenses, and saves costs. The built-in oil circuit is simple and reliable to install, easy to maintain, easy to operate, reduces oil leakage points, and can be widely used in various types of engines. It has a compact design, reduces many pipes in appearance, and has a beautiful appearance.

[0022] Embodiment: Figure 1 , Figure 2 and Figure 3 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that in actual application, the solution of adding bottom spray to the external oil pipe of the existing twin-cylinder engine has leakage at the connection of the oil pipe outside the box of the twin-cylinder engine, which has major quality risks. The overall idea is as follows:

[0023] In view of the problems existing in the prior art, the utility model provides a built-in oil passage for a twin-cylinder engine, including an upper box 6, an oil supply hole 5 communicating with the bottom spray is provided on the upper box 6, a No. 1 hole 1 is provided on the longitudinal middle partition of the upper box 6, a No. 3 hole 3 is provided on the transverse middle partition of the upper box 6, a No. 2 hole 2 is provided on the side edge of the upper box 6, a No. 4 hole 4 is provided on the surface of the upper box 6, the No. 1 hole 1 is communicated with the No. 4 hole 4, and is used to lead the engine oil of the main oil passage, the No. 3 hole 3 is connected with the No. 1 hole 1, and is used to lead the engine oil of the main oil passage to the side edge, the No. 2 hole 2 is connected with the No. 3 hole 3, a deep hole 7 communicating with the oil supply hole 5 is provided in the upper box 6, the No. 3 hole 3 is connected with the deep hole 7, the length of the deep hole 7 is 178 mm, the number of the oil supply holes 5 is two, and the No. 1 hole 1 is connected with the No. 4 hole 4, and is used to lead the engine oil of the main oil passage to the side edge, the No. 2 hole 2 is connected with the No. 3 hole 3, and a deep hole 7 communicating with the oil supply hole 5 is provided in the upper box 6, the No. 3 hole 3 is connected with the deep hole 7, the length of the deep hole 7 is 178 mm, the number of the oil supply holes 5 is two, and the No. 1 hole 1 is connected with the No. 1 hole 1, and the No. 3 hole 3 is connected with the deep hole 7, the length of the deep hole 7 is 178 mm, the number of the oil supply holes 5 is two, and the No. 1 hole 1 is connected with the No. 1 A No. 1 hole 1 is designed and manufactured, which is connected with the No. 4 hole 4 to lead the oil from the main oil channel. A No. 3 hole 3 is designed and manufactured on the transverse middle partition of the upper box 6, which is connected with the No. 1 hole 1 to lead the oil from the main oil channel to the side edge. A No. 2 hole 2 is designed and manufactured on the side edge of the upper box 6, which is connected with the No. 3 hole 3 and then extends to form a deep hole 7. The deep hole 7 is connected with the two bottom injection oil supply holes 5 to form an extra-long oil channel for bottom injection oil supply. An aluminum plug is designed and manufactured to block the exposed process hole part in the oil circuit to realize internal circulation of the oil circuit, solve the problem of overheating of the cylinder liner and piston for bottom injection oil supply, completely eliminate the major quality hidden danger of leakage at the connection of the external oil pipe of the double-cylinder case, solve the problem that the installation part of the external oil channel is limited by space and cannot be repaired, and improve the reliability and maintainability of the double-cylinder diesel engine.

[0024] Working principle:

[0025] 1. Design and make a No. 1 hole 1 in the longitudinal middle partition of the upper box 6, which is connected with the No. 4 hole 4 to guide the oil from the main oil channel;

[0026] 2. A No. 3 hole 3 is designed and made in the horizontal middle partition of the upper box 6, which is connected with the No. 1 hole 1 to guide the oil in the main oil channel to the side edge;

[0027] 3. A second hole 2 is designed and made on the side edge of the upper box 6. After being connected with the third hole 3, it continues to extend to form a deep hole 7. The deep hole 7 penetrates the two bottom spray oil supply holes 5 to form an extra-long oil channel for the bottom spray oil supply;

[0028] 4. Design and manufacture aluminum plugs to block the exposed process holes in the oil circuit, realize internal circulation of the oil circuit, solve the problem of overheating of cylinder liner and piston for bottom injection oil supply, completely eliminate the leakage at the connection of the external oil pipe of the double-cylinder chassis, which is a major quality hidden danger, solve the problem that the installation part of the external oil channel is limited by space and cannot be repaired, and improve the reliability and maintainability of the double-cylinder diesel engine.

[0029] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A twin-cylinder engine internal oil passage, comprising an upper box (6), characterized in that: The upper box (6) is provided with an oil supply hole (5) communicating with the bottom spray, the longitudinal middle partition of the upper box (6) is provided with a first hole (1), the transverse middle partition of the upper box (6) is provided with a third hole (3), the side edge of the upper box (6) is provided with a second hole (2), and the surface of the upper box (6) is provided with a fourth hole (4); The No. 1 hole (1) is in communication with the No. 4 hole (4) and is used to guide the oil from the main oil channel. The No. 3 hole (3) is in communication with the No. 1 hole (1) and is used to guide the oil from the main oil channel to the side edge. The No. 2 hole (2) is in communication with the No. 3 hole (3). A deep hole (7) in communication with the oil supply hole (5) is provided in the upper box (6), and the No. 3 hole (3) is in communication with the deep hole (7).

2. The internal oil passage of a twin-cylinder engine according to claim 1, characterized in that: The length of the deep hole (7) is 178 mm.

3. The internal oil passage of a twin-cylinder engine according to claim 1, characterized in that: The number of the oil supply holes (5) is two.

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