Engine intake pipe structure

Abstract

The utility model provides a kind of engine intake pipe structure, belong to engine technical field, including shell, the shell is formed with pressure stabilizing chamber, the shell is provided with air inlet and exhaust port;The side of the shell away from exhaust port is provided with BPS installation interface, the shell top is provided with closed circulation air port, the side of the shell top upper side away from exhaust port is provided with common rail pipe installation interface.The utility model can utilize space to the greatest extent, improve the compact direction of entire intake system structure, optimize the complex pipeline arrangement of intake pipe.

Description

Technical Field

[0001] This utility model belongs to the field of engine technology, and in particular relates to an engine intake pipe structure. Background Technology

[0002] As an essential structure in engine technology, the intake manifold, as a piping component of the intake system, presents significant design and manufacturing challenges. Especially with the upgrading of engine emissions standards, the number of emission-related components increases, making the intake manifold increasingly complex, design more difficult, and reliability harder to control.

[0003] The intake manifold must first be able to directly deliver gas to the cylinder head intake port, and have a pressure stabilizing chamber to hold the gas. The presence of the pressure stabilizing chamber allows fresh air and exhaust gas from the breather to be fully mixed before entering the cylinder head intake port and participating in combustion.

[0004] In order to accurately control the intake air volume, the BPS sensor and common rail are often installed in the intake piping system, which makes the intake piping very complex, with messy piping routes and irregular intersecting structures. Utility Model Content

[0005] In view of the defects or deficiencies in the existing technology, this utility model provides an engine intake pipe structure that can maximize the use of space, improve the compactness of the entire intake system structure, and optimize the complex pipeline layout of the intake pipe.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An embodiment of this utility model provides an engine intake pipe structure, including a housing, a pressure stabilizing chamber formed inside the housing, and an air inlet and an exhaust outlet provided on the housing;

[0008] A BPS installation interface is provided on the side of the housing away from the exhaust port, a closed-loop air inlet is provided on the top of the housing, and a common rail installation interface is provided on the side of the top of the housing away from the exhaust port.

[0009] Furthermore, both the air inlet and the exhaust outlet are connected to the pressure stabilizing chamber, wherein the air inlet is located at the top of the housing and the exhaust outlet is located on the side of the housing.

[0010] Furthermore, a flange is provided on the outer edge of the exhaust port, and multiple bolt holes are provided on the periphery of the flange.

[0011] Furthermore, a sealing groove is provided on the periphery of the flange, and a sealing ring is placed in the sealing groove.

[0012] Furthermore, the BPS mounting interface is located in the middle of the housing on the side away from the exhaust port, the BPS mounting interface is inclined downwards and connected to the middle of the pressure stabilizing chamber.

[0013] Furthermore, the closed-loop recirculating air inlet is located on one side of the air inlet and is vertically upward.

[0014] Furthermore, the closed-loop air inlet is connected to the pressure stabilizing chamber.

[0015] Furthermore, the common rail mounting interface is provided in two places, which are fixed above the air inlet on both sides by brackets.

[0016] Furthermore, the bracket is tilted outwards from the housing, causing the common rail mounting interface to protrude from the side of the housing.

[0017] Furthermore, the top of the housing is provided with two accessory fixing holes, which are located on both sides of the air inlet.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model integrates the common rail mounting structure, BPS mounting structure, closed-loop recirculation port structure, and accessory mounting structure into the intake pipe structure, which can maximize the use of space, improve the compactness of the entire intake system structure, optimize the complex pipeline layout of the intake pipe, and improve the reliability of the mounting structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the intake pipe structure in an embodiment of the present invention;

[0021] Figure 2 This is a side sectional view of the intake pipe in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the exhaust port structure in an embodiment of the present utility model;

[0023] Figure 4 This is a side view of the intake pipe structure in an embodiment of the present invention;

[0024] The components include: 1. Housing; 2. Pressure regulating chamber; 3. Common rail mounting interface; 4. BPS mounting interface; 5. Closed-loop recirculation port; 6. Accessory fixing hole; 7. Air inlet; 8. Exhaust port; and 9. Sealing groove. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] A typical embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, an engine intake manifold structure includes a housing 1, within which a pressure-stabilizing chamber 2 is formed. An air inlet 7 and an exhaust outlet 8 are disposed on the housing 1, both communicating with the pressure-stabilizing chamber 2. The air inlet 7 is located at the top of the housing 1, and the exhaust outlet 8 is located on the side of the housing 1. Figure 3 As shown, a flange is provided on the outer edge of the exhaust port 8. Multiple bolt holes are provided on the periphery of the flange. The intake pipe can be fixed to the intake port of the engine cylinder head by bolts. A sealing groove 9 is provided on the periphery of the flange. A sealing ring is placed in the sealing groove 9 to ensure the sealing between the exhaust port 8 of the housing 1 and the intake port of the engine cylinder head.

[0027] like Figure 4 As shown, a BPS mounting interface 4 is provided on the side of the housing 1 away from the exhaust port 8. The BPS mounting interface 4 is used to fix the BPS sensor, which can monitor the pressure and temperature of the gas entering the intake pipe. In order to accurately monitor the pressure and temperature of the gas entering the intake pipe, the BPS mounting interface 4 is located in the middle of the side of the housing 1 away from the exhaust port 8. The BPS mounting interface 4 is tilted downward and connected to the middle of the pressure stabilizing chamber 2.

[0028] The top of the housing 1 is provided with a closed-loop recirculation port 5, which is connected to the pressure stabilizing chamber 2. The closed-loop recirculation port 5 is the interface for controlling the exhaust gas of the respirator to enter the pressure stabilizing chamber 2. It is located on the side of the air inlet 7 and is set vertically upward. Setting the closed-loop recirculation port 5 on the upper part of the pressure stabilizing chamber 2 makes full use of the space and makes the overall structure compact.

[0029] A common rail mounting interface 3 is provided on the top of the housing 1 on the side away from the exhaust port 8. There are two common rail mounting interfaces 3, located on the upper sides of the air inlet 7 respectively. The common rail mounting interface 3 is used to install the common rail. It is fixed to the top of the housing 1 by a bracket. The bracket is tilted outward of the housing 1 so that the common rail mounting interface 3 protrudes from the side of the housing 1, which facilitates the installation and replacement of the common rail. A reinforcing rib is provided between the bracket and the housing 1 to ensure the connection strength between the bracket and the housing 1.

[0030] By placing the common rail mounting interface 3 on the upper outer sides of both sides of the air inlet 7, the space utilization rate is improved, and the overall structure is compact and reliable through the bracket and reinforcing ribs.

[0031] The top of the housing 1 is also provided with accessory fixing holes 6. There are two accessory fixing holes 6, which are located on both sides of the air inlet 7, and are used to fix the wire harness bracket or common rail pipe, etc., inside the air inlet pipe.

[0032] In use, the intake pipe is first connected to the intake port with clamps, and the flange on the outside of the exhaust pipe is fixed to the intake port of the engine cylinder head with bolts. Fresh air enters the intake pipe through the intake pipe, and after being pressurized in the pressure stabilizing chamber, it enters the cylinder head intake passage. The closed-loop recirculation port is connected to the engine breather through a pipe. The exhaust gas from the breather enters the pressure stabilizing chamber through the closed-loop recirculation port, and after being fully mixed with the fresh air in the pressure stabilizing chamber, it enters the cylinder head intake passage to participate in combustion.

[0033] Integrating the common rail mounting structure, BPS mounting structure, closed-loop recirculation port structure, and accessory mounting structure into the intake pipe structure maximizes space utilization, improves the compactness of the entire intake system structure, optimizes the complex piping layout of the intake pipe, and enhances the reliability of the mounting structure.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An engine intake manifold structure, characterized in that, Includes a housing, within which a pressure-stabilizing chamber is formed, and an air inlet and an exhaust outlet are provided on the housing; A BPS installation interface is provided on the side of the housing away from the exhaust port, a closed-loop air inlet is provided on the top of the housing, and a common rail installation interface is provided on the side of the top of the housing away from the exhaust port.

2. The engine intake manifold structure as described in claim 1, characterized in that, Both the air inlet and the exhaust outlet are connected to the pressure stabilizing chamber, wherein the air inlet is located at the top of the housing and the exhaust outlet is located on the side of the housing.

3. The engine intake manifold structure as described in claim 1, characterized in that, A flange is provided on the outer edge of the exhaust port, and multiple bolt holes are provided on the periphery of the flange.

4. The engine intake manifold structure as described in claim 3, characterized in that, A sealing groove is provided on the periphery of the flange, and a sealing ring is placed in the sealing groove.

5. The engine intake manifold structure as described in claim 1, characterized in that, The BPS mounting interface is located in the middle of the housing on the side away from the exhaust port. The BPS mounting interface is tilted downwards and connected to the middle of the pressure stabilizing chamber.

6. The engine intake manifold structure as described in claim 1, characterized in that, The closed-loop air inlet is located on one side of the air inlet and is vertically upward.

7. The engine intake manifold structure as described in claim 1, characterized in that, The closed-loop air inlet is connected to the pressure stabilizing chamber.

8. The engine intake manifold structure as described in claim 1, characterized in that, The common rail mounting interface is provided in two places and is fixed above the air inlet on both sides by brackets.

9. The engine intake manifold structure as described in claim 8, characterized in that, The bracket is tilted outwards from the housing, causing the common rail pipe mounting interface to protrude from the side of the housing.

10. The engine intake manifold structure as described in claim 1, characterized in that, The top of the housing is also provided with two accessory fixing holes, which are located on both sides of the air inlet.

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