Compact air inlet system of engine

Abstract

The utility model discloses an engine compact type air inlet system which comprises an air inlet pipe, an opening of the air inlet pipe is horizontally arranged outwards and connected with a first air inlet connecting pipe, the rear portion of the first air inlet connecting pipe vertically extends downwards to form a vertical section, and the vertical section of the first air inlet connecting pipe is connected with a throttle valve. The throttle valve is connected with a second air inlet connecting pipe through a first air inlet rubber pipe, a branch pipe, facing the machine body side, of the second air inlet connecting pipe is further connected with an air compressor air inlet pipe through a second air inlet rubber pipe, and the other end of the air compressor air inlet pipe is connected with a third air inlet rubber pipe. The problem that an air inlet system of an existing engine is not compact enough in overall structure is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine intake structure field, especially a compact engine intake system. BACKGROUND

[0002] With the continuous expansion of agricultural intensification, the market holding capacity of small horsepower wheeled tractor greatly increases, but due to its smaller assembly space, the engine intake system often interferes with the cab or frame, so the wheeled tractor requires higher assembly space for the engine intake system, so we need to optimize the width of the engine intake system. SUMMARY

[0003] The utility model discloses a compact engine intake system, which solves the problem of insufficient compactness of the overall structure of the existing engine intake system.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A compact engine intake system, comprising an air inlet pipe, the opening of the air inlet pipe is horizontally outwardly arranged, the opening of the air inlet pipe is connected with a first air inlet pipe, the rear part of the first air inlet pipe vertically extends downward to become a vertical section, the vertical section of the first air inlet pipe is connected with a throttle valve, the throttle valve is connected with a second air inlet pipe through a first air inlet rubber pipe, the branch pipe on the side of the machine body of the second air inlet pipe is also connected with an air compressor air inlet pipe through a second air inlet rubber pipe, and the other end of the air compressor air inlet pipe is connected with a third air inlet rubber pipe.

[0006] The opening of the air inlet pipe is horizontally outwardly arranged, the opening of the air inlet pipe is connected with the first air inlet pipe, the rear part of the first air inlet pipe vertically extends downward to become a vertical section, and the vertical section of the first air inlet pipe is connected with the throttle valve, which narrows the width of the first air inlet pipe in the middle, makes the structure of the engine intake system more compact, and meets the matching requirements of most wheeled tractors.

[0007] As a further preferred embodiment of the utility model, the EGR system further comprises an EGR cooler arranged below one side of the air inlet pipe, an EGR cooler of the EGR system connected with the air inlet pipe through the first air inlet pipe, and an EGR valve of the EGR system installed on the valve seat of the EGR cooler of the EGR system, which is closely attached to the air inlet pipe, and one end of the EGR cooler of the EGR system is connected with an EGR connecting pipe.

[0008] The EGR cooler is arranged below the air inlet pipe, the EGR valve is closely attached to the air inlet pipe, and the exhaust gas is directly connected with the air inlet pipe through the EGR valve, which reduces the intermediate parts and makes the entire EGR system arranged on the engine occupy a smaller space.

[0009] As a further preferred embodiment of the present application, the second air inlet pipe is fixedly connected with the EGR cooler of the EGR system through a support.

[0010] Compared with the prior art, the present application can achieve at least one of the following beneficial effects:

[0011] 1. The opening of the air inlet pipe is horizontally outwardly arranged, the opening of the air inlet pipe is connected with the first air inlet pipe, the rear part of the first air inlet pipe vertically extends downward to become a vertical section, and the vertical section of the first air inlet pipe is connected with the throttle valve. Such structure narrows the width of the intermediate first air inlet pipe, so that the air intake system structure of the engine is more compact, and meets the matching requirements of most wheeled tractors.

[0012] 2. The EGR cooler is arranged below the air inlet pipe, the EGR valve is closely attached to the air inlet pipe, and the exhaust gas is directly connected with the air inlet pipe through the EGR valve, so that the intermediate parts are reduced, and the entire EGR system occupies a smaller space on the engine.

[0013] 3. The system integrates the air outlet interface of the exhaust pipe, the air compressor and the air filter, connects them to the air intake system, makes the air intake system structure compact, occupies a small space, and the width of the entire air intake system to the cylinder cover end surface is 174.5mm, which meets the design requirements of small power wheeled tractor structure compact and small space ratio. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the present application assembled on a diesel engine.

[0015] Figure 2 It is a schematic view of the shaft side structure of the present application on a diesel engine.

[0016] Figure 3 It is a schematic view of the air intake side structure of the present application on a diesel engine.

[0017] Figure 4 It is a schematic view of the left side structure of the present application on a diesel engine. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents the preferred application of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0020] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0021] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Specific embodiment 1:

[0025] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4An engine compact intake system is shown, which comprises an intake pipe 1, the opening of which is horizontally outward, the opening of the intake pipe 1 is connected with a first intake pipe 2, the rear part of the first intake pipe 2 vertically downwardly extends into a vertical section, the vertical section of the first intake pipe 2 is connected with a throttle valve 8, the throttle valve 8 is connected with a second intake pipe 6 through a first intake rubber pipe 7, the branch pipe of the second intake pipe 6 towards the machine body is further connected with an air compressor intake pipe 10 through a second intake rubber pipe 11, the other end of the air compressor intake pipe 10 is connected with a third intake rubber pipe 9.

[0026] The opening of the above intake pipe is horizontally outward, the opening of the intake pipe is connected with the first intake pipe, the rear part of the first intake pipe vertically downwardly extends into a vertical section, and the vertical section of the first intake pipe is connected with the throttle valve, which narrows the width of the middle first intake pipe, so that the structure of the engine intake system is more compact, and the matching requirements of most wheeled tractors are met. Specific embodiment 2:

[0028] This embodiment is further described on the basis of the specific embodiment 1, and further comprises an EGR system, the EGR cooler 5 of the EGR system is arranged below one side of the intake pipe 1, the EGR cooler 5 of the EGR system is connected with the intake pipe 1 through the first intake pipe 2, the EGR valve 3 of the EGR system is installed on the EGR cooler valve seat of the EGR system, which is close to the intake pipe, and one end of the EGR cooler 5 of the EGR system is connected with the EGR connecting pipe 4.

[0029] The EGR cooler is arranged below the intake pipe, the EGR valve is close to the intake pipe, and the exhaust gas is directly connected with the intake pipe through the EGR valve, which reduces the intermediate parts, so that the whole EGR system occupies a smaller space on the engine. Specific embodiment 3:

[0031] This embodiment is further described on the basis of the specific embodiment 2, and the second intake pipe 6 is fixedly connected with the EGR cooler 5 of the EGR system through a support.

[0032] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A compact engine intake system, characterized by: The invention comprises an air intake pipe (1), wherein the opening of the air intake pipe (1) is arranged horizontally outward, the opening of the air intake pipe (1) is connected to a first air intake pipe (2), the rear portion of the first air intake pipe (2) extends vertically downward to form a vertical section, the vertical section of the first air intake pipe (2) is connected to a throttle valve (8), the throttle valve (8) is connected to a second air intake pipe (6) through a first air intake hose (7), the branch pipe of the second air intake pipe (6) toward the machine body is also connected to an air compressor air intake pipe (10) through a second air intake hose (11), and the other end of the air compressor air intake pipe (10) is connected to a third air intake hose (9).

2. The compact engine intake system according to claim 1, characterized in that: The invention also includes an EGR system, wherein an EGR cooler (5) of the EGR system is arranged below one side of the intake pipe (1), the EGR cooler (5) of the EGR system is connected to the intake pipe (1) through a first intake pipe (2), an EGR valve (3) of the EGR system is installed on the EGR cooler valve seat of the EGR system, and is closely attached to the intake pipe, and one end of the EGR cooler (5) of the EGR system is connected to the EGR connecting pipe (4).

3. The compact engine intake system according to claim 2, characterized in that: The second air intake pipe (6) is fixedly connected to the EGR cooler (5) of the EGR system via a bracket.

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