Intake manifold of high-speed diesel engine

Abstract

The utility model discloses an intake manifold of a high-speed diesel engine, which comprises an intake manifold body, an intake guide plate and a waste ingress pipe, the intake guide plate is arranged in a pressure stabilizing cavity of the intake manifold body, and the intake manifold body is connected with the waste ingress pipe communicated with the pressure stabilizing cavity of the intake manifold body. The intake manifold has the advantages that waste gas can be fully mixed with fresh air after entering the intake manifold body through the waste gas ingress pipe, air intake of each cylinder of an engine is uniform through the arrangement of the air intake guide plate in the pressure stabilizing cavity of the intake manifold body, the air intake amount of each cylinder is kept consistent, the combustion performance of the engine is further improved, and the service life of the engine is prolonged. And the gas emission is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, in particular to an intake manifold of a high-speed diesel engine. Background Art

[0002] In modern internal combustion engines, especially in the operation of small high-speed diesel engines, intake uniformity and exhaust uniformity play a very important role. It is necessary not only to ensure that the engine has sufficient intake charge, but also to ensure that the gas in the cylinder is evenly mixed. If the intake volume of each cylinder is different, or the concentration of air and gas in each cylinder is different, the organization of the combustion process will also be different, which will cause differences in the combustion process of each cylinder and directly affect the working stability of the engine. In addition, the uniformity of EGR distribution is related to the performance of combustion in each cylinder and has an important impact on engine emissions. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to improve the combustion performance of the engine.

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

[0005] An intake manifold for a high-speed diesel engine comprises an intake manifold body, an intake guide plate and a waste introduction pipe. The intake manifold body is provided with an intake guide plate in a pressure stabilizing chamber, and the intake manifold body is connected with a waste introduction pipe which is in communication with the pressure stabilizing chamber of the intake manifold body.

[0006] After the exhaust gas enters the intake manifold body through the exhaust gas inlet pipe, it can be fully mixed with fresh air. The setting of the intake guide plate in the pressure stabilizing chamber of the intake manifold body makes the intake of each cylinder of the engine uniform, ensuring that the intake volume of each cylinder remains consistent, thereby improving the engine combustion performance and reducing gas emissions.

[0007] Preferably, the intake manifold body and the intake guide plate are integrally cast.

[0008] Preferably, the air intake direction of the intake manifold body is perpendicular to the air outlet direction of the waste inlet pipe.

[0009] Preferably, the air intake guide plate is V-shaped.

[0010] Preferably, the waste introduction tube is also provided with a bowl-shaped plug.

[0011] Preferably, the exhaust gas inlet pipe is connected to the intake manifold body by interference fit.

[0012] Preferably, a cooling water pipe is also provided on the intake manifold body.

[0013] Preferably, a warm air water pipe is also provided on the intake manifold body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] After the exhaust gas enters the intake manifold body through the exhaust gas inlet pipe, it can be fully mixed with fresh air. The setting of the intake guide plate in the pressure stabilizing chamber of the intake manifold body makes the intake of each cylinder of the engine uniform, ensuring that the intake volume of each cylinder remains consistent, thereby improving the engine combustion performance and reducing gas emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0020] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0022] See also Figures 1 to 3The present embodiment discloses an intake manifold of a high-speed diesel engine, comprising an intake manifold body 1, an intake guide plate 2, a waste introduction pipe 3, a cooling water pipe 4, a heater water pipe 5 and a bowl-shaped plug 6. A V-shaped intake guide plate 2 is arranged in a pressure stabilizing chamber of the intake manifold body 1. The intake manifold body 1 is connected with a waste introduction pipe 3 connected to the pressure stabilizing chamber of the intake manifold body 1 by interference fit. The intake direction of the intake manifold body 1 is perpendicular to the outlet direction of the waste introduction pipe 3.

[0023] The cooling water pipe 4 and the heating water pipe 5 are press-fitted onto the intake manifold body 1 by interference fit.

[0024] The bowl-shaped plug 6 is pressed onto the waste introduction tube 3 to play a sealing role.

[0025] Furthermore, the intake manifold body 1 and the intake guide plate 2 are integrally cast to ensure the structural strength of the intake manifold and to have good NVH performance.

[0026] In this embodiment, after the exhaust gas enters the intake manifold body 1 through the exhaust gas inlet pipe 3, it can be fully mixed with the fresh air, and the setting of the intake guide plate 2 in the pressure stabilizing chamber of the intake manifold body 1 makes the intake of each cylinder of the engine uniform, ensuring that the intake volume of each cylinder remains consistent, thereby improving the engine combustion performance and reducing gas emissions.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] The above-described embodiments merely represent implementation methods of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and all of these belong to the protection scope of the utility model.

Claims

1. An intake manifold for a high-speed diesel engine, characterized in that: It includes an intake manifold body, an intake guide plate and an exhaust gas introduction pipe, wherein the intake guide plate is arranged in the pressure stabilizing chamber of the intake manifold body, and the intake manifold body is connected with the exhaust gas introduction pipe which is in communication with the pressure stabilizing chamber of the intake manifold body; The intake manifold body and the intake guide plate are integrally cast; The air intake direction of the intake manifold body is perpendicular to the air outlet direction of the exhaust gas inlet pipe; The waste gas inlet pipe is also provided with a bowl-shaped plug.

2. The intake manifold of a high-speed diesel engine according to claim 1, characterized in that: The air intake guide plate is V-shaped.

3. The intake manifold of a high-speed diesel engine according to claim 1, characterized in that: The exhaust gas inlet pipe is connected to the intake manifold body by interference fit.

4. The intake manifold of a high-speed diesel engine according to claim 1, characterized in that: The intake manifold body is also provided with a cooling water pipe.

5. The intake manifold of a high-speed diesel engine according to claim 1, characterized in that: The intake manifold body is also provided with a warm air water pipe.

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