A body structure with integrated fuel injection pump housing

Abstract

The utility model discloses a body structure integrated with a fuel injection pump housing, wherein the fuel injection pump housing and the engine body are integrally formed, and a seat hole for installing a fuel injection pump shaft bearing in the fuel injection pump housing is arranged on the engine body, and the bearing seat hole includes a bearing seat hole A and a bearing seat hole B, and the bearing seat hole A and the bearing seat hole B constitute a double bearing support structure, and other parts installation windows are opened on the surface of the fuel injection pump housing. The beneficial effect of the utility model is that after the body structure integrates the engine body and the fuel injection pump housing together, the gap between the engine body and the fuel injection pump housing is eliminated, thereby reducing the size of the entire body structure, and a parts installation window is provided. When the parts of the fuel injection system are damaged, the entire fuel injection system does not need to be replaced as a whole, but the damaged parts can be disassembled through the parts installation window, and then replaced with new parts, thereby reducing the replacement cost.

Description

Technical Field

[0001] The utility model relates to the field of engines, in particular to an engine body structure integrated with a fuel injection pump housing. Background Art

[0002] At present, in the internal combustion engine industry, in the fuel supply system used, the fuel pump is generally an assembly component, which is assembled to the intake side of the engine body together with other components of the fuel supply system. In order to ensure that the fuel pump can be installed in place, sufficient clearance is generally left between the fuel pump housing and the engine body during design. If the complex side structure of the engine body and other structural limitations of the fuel pump are added, the clearance between the fuel pump housing and the engine body must be larger, making the engine width larger, the structure less compact, and the appearance poor. At the same time, if the fuel pump parts are damaged, the entire fuel pump needs to be replaced, and the replacement cost is high. Utility Model Content

[0003] The utility model aims to provide a body structure integrated with a fuel injection pump housing, so as to solve the problems that the connection structure between the existing engine body and the fuel injection pump housing is not compact and the entire fuel injection pump needs to be replaced after the fuel injection pump parts are damaged.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A body structure integrated with a fuel injection pump housing comprises an engine body and a fuel injection pump housing, wherein the fuel injection pump housing and the engine body are integrally formed, and a bearing seat hole for installing a fuel injection pump shaft bearing in the fuel injection pump housing is arranged on the engine body, wherein the bearing seat hole comprises a bearing seat hole A and a bearing seat hole B, and the bearing seat hole A and the bearing seat hole B constitute a double bearing support structure, and a window for installing other parts is opened on the surface of the fuel injection pump housing.

[0006] The structure of the utility model can save the need to consider the gap problem between the fuel injection pump housing and the engine body, thereby achieving the purpose of compact engine structure. In addition, other parts installation windows are provided on the surface of the fuel injection pump housing. Therefore, if the fuel injection pump parts are damaged, only the damaged parts can be replaced without replacing the fuel injection pump assembly, and the replacement cost is low.

[0007] As a further preferred embodiment of the present invention, the diameter of the bearing seat hole A and the bearing seat hole B is 40 mm.

[0008] As a further preferred embodiment of the present invention, positioning holes and threaded holes are provided around the part installation window.

[0009] The positioning holes are used for positioning, and the threaded holes are used to install other parts of the injection pump.

[0010] As a further preferred embodiment of the present invention, there are two positioning holes, and the two positioning holes are respectively located on different sides of the part installation window.

[0011] As a further preferred embodiment of the present invention, there are four threaded holes, and the four threaded holes are respectively located on different sides of the part installation window.

[0012] Compared with the prior art, this body structure integrates the engine body and the oil pump housing together, thereby eliminating the gap between the engine body and the oil pump housing, thereby reducing the size of the entire body structure. A parts installation window is provided. When the components of the injection system are damaged, there is no need to replace the entire injection system as a whole. Instead, the damaged components can be disassembled through the parts installation window and replaced with new parts, thereby reducing the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the engine body of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the fuel injection pump housing. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. Specific embodiment 1:

[0018] Figure 1 , Figure 2A body structure integrated with a fuel injection pump housing is shown, including an engine body 1 and a fuel injection pump housing 2, the fuel injection pump housing 2 and the engine body 1 are integrally formed, the engine body 1 is provided with a bearing seat hole for installing the fuel injection pump shaft bearing in the fuel injection pump housing 2, the bearing seat hole includes a bearing seat hole A3 and a bearing seat hole B4, the bearing seat hole A and the bearing seat hole B constitute a double bearing support structure, and the surface of the fuel injection pump housing 2 is provided with a window 21 for installing other parts.

[0019] The bearing seat hole A and the bearing seat hole B form a double-bearing support structure, thereby ensuring the stability of the fuel injection pump during operation. To realize the entire fuel injection system, other parts of the fuel injection system need to be installed. Therefore, a part installation window 21 is opened on the surface of the fuel injection pump housing 2, and other parts of the fuel injection system enter the fuel injection pump housing 2 through the part installation window and are installed in corresponding positions. Therefore, after the body structure integrates the engine body 1 and the fuel pump housing 2 together, the gap between the engine body 1 and the fuel pump housing 2 is eliminated, thereby reducing the size of the entire body structure. A part installation window is provided. When the parts of the fuel injection system are damaged, there is no need to replace the entire fuel injection system as a whole. Instead, the damaged parts can be disassembled through the part installation window and then replaced with new parts, thereby reducing the replacement cost.

[0020] The structure of the utility model can save the need to consider the gap problem between the fuel injection pump housing and the engine body, thereby achieving the purpose of compact engine structure. In addition, other parts installation windows are provided on the surface of the fuel injection pump housing. Therefore, if the fuel injection pump parts are damaged, only the damaged parts can be replaced without replacing the fuel injection pump assembly, and the replacement cost is low. Specific embodiment 2:

[0022] This embodiment further illustrates the bearing seat hole A3 and the bearing seat hole B4 on the basis of the specific embodiment 1. The diameters of the bearing seat hole A3 and the bearing seat hole B4 are both 40 mm. Specific embodiment 3:

[0024] This embodiment further illustrates other parts installation windows 21 based on the specific embodiment 1. Positioning holes 22 and threaded holes 23 are arranged around the parts installation window 21 .

[0025] The positioning holes are used for positioning, and the threaded holes are used to install other parts of the injection pump. Specific embodiment 4:

[0027] This embodiment further illustrates the positioning holes 22 based on the specific embodiment 3. There are two positioning holes 22 , and the two positioning holes 22 are located at different sides of the part installation window 21 .

[0028] Furthermore, there are two positioning holes, and the two positioning holes are respectively located on different sides of the part installation window. Optionally, the two positioning holes are located on opposite sides of the part installation window. Through the positioning holes, the positioning accuracy of the part installation can be guaranteed. Specific embodiment 5:

[0030] This embodiment further illustrates the threaded holes 23 on the basis of the specific embodiment 3. There are four threaded holes 23 , which are respectively located on different sides of the part installation window 21 .

[0031] There are four threaded holes, which are respectively located in different parts installation windows. The threaded holes are used to install other parts of the fuel injection system, so that the other parts can be detachably installed on the fuel injection pump housing, and the main parts of the other parts are located in the parts installation windows, so that the body structure is compact.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine body structure integrated with a fuel injection pump housing, comprising an engine body (1) and a fuel injection pump housing (2), characterized in that: The fuel injection pump housing (2) and the engine body (1) are integrally formed, and a bearing seat hole for mounting a fuel injection pump shaft bearing in the fuel injection pump housing (2) is arranged on the engine body (1), the bearing seat hole comprising a bearing seat hole A (3) and a bearing seat hole B (4), the bearing seat hole A and the bearing seat hole B forming a double bearing support structure, and a window (21) for mounting other parts is opened on the surface of the fuel injection pump housing (2).

2. The engine body structure integrated with the fuel injection pump housing according to claim 1, characterized in that: The diameters of the bearing seat hole A (3) and the bearing seat hole B (4) are both 40 mm.

3. The engine body structure integrated with the fuel injection pump housing according to claim 1, characterized in that: Small positioning holes (22) and threaded holes (23) are provided around the part installation window (21).

4. The engine body structure integrated with the fuel injection pump housing according to claim 3, characterized in that: There are two positioning holes (22), and the two positioning holes (22) are respectively located on different sides of the part installation window (21).

5. The engine body structure integrated with the fuel injection pump housing according to claim 3, characterized in that: There are four threaded holes (23), and the four threaded holes (23) are respectively located on different sides of the part installation window (21).

Images