A V-type engine intake pipe structure

Abstract

The present invention discloses a V-type engine intake pipe structure, including an intake pipe, the outside of which is provided with an inlet pipe connected to an intercooler, a left intake pipe connected to the left cylinder of the engine, and a right intake pipe connected to the left cylinder of the engine, and the inlet pipe, the left intake pipe and the right intake pipe are all integrated with the intake pipe; and a pressure stabilizing chamber, which is opened inside the inlet pipe, and the inlet pipe, the left intake pipe and the right intake pipe are all connected to the pressure stabilizing chamber. The V-type engine intake pipe structure described in the present invention achieves consistency in intake pressure and intake flow of cylinders on the left and right sides of the V-type engine through structural optimization design of the intake pipe, ensures uniform intake of each cylinder, effectively improves the combustion efficiency of the engine, and thus improves the performance of the engine. The present invention has a simple structure and is easy to implement.

Description

Technical Field

[0001] The invention relates to the field of internal combustion engines, and in particular to an intake pipe structure of a V-type engine. Background Art

[0002] Due to its special structure, the V-type engine has cylinders on the left and right sides, and intake pipes need to be arranged on both sides. At this time, the gas after supercharging and intercooling needs to be reasonably distributed to the left and right cylinders to ensure the stable operation of the engine. Otherwise, the intake volume on one side is large and the intake volume on the other side is small, which will lead to uneven work on both sides. The side with small intake volume will have problems such as poor combustion and high exhaust temperature. However, due to the existence of the V-shaped span and the structural limitations of the engine itself, the direction, length and diameter of the intake pipes leading to both sides cannot be designed to be exactly the same. In addition, the V-type engine has the characteristics of alternating intake and work on the left and right sides, which easily leads to the phenomenon of "gas grabbing" on the left and right sides. For this reason, we propose a V-type engine intake pipe structure. Summary of the invention

[0003] The main purpose of the present invention is to provide a V-type engine intake pipe structure, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A V-type engine intake pipe structure, comprising an intake pipe, an inlet pipe connected to an intercooler, a left intake pipe connected to a left cylinder of the engine, and a right intake pipe connected to a left cylinder of the engine are arranged outside the inlet pipe, and the inlet pipe, the left intake pipe, and the right intake pipe are all integrated with the intake pipe; and

[0006] The pressure stabilizing chamber is arranged inside the inlet pipe, and the inlet pipe, the left air inlet pipe and the right air inlet pipe are all connected with the pressure stabilizing chamber.

[0007] Preferably, the cross section of the pressure stabilizing chamber is trumpet-shaped.

[0008] Preferably, the cross-sections of the left air intake pipe and the right air intake pipe are both rectangular, and the width of the right air intake pipe is greater than the width of the left air intake pipe.

[0009] Preferably, both side walls where the inlet pipe is connected to the air intake pipe are inclined toward the right air intake pipe.

[0010] Preferably, the inlet pipe is cylindrical.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By optimizing the structure of the intake pipe, the intake pressure and intake flow rate of the cylinders on the left and right sides of the V-type engine are made consistent, ensuring uniform intake of each cylinder, effectively improving the combustion efficiency of the engine, and thus improving the performance of the engine. The present invention has a simple structure and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front structural diagram of a V-type engine intake pipe structure of the present invention;

[0014] Figure 2 This is a reverse structural diagram of a V-type engine intake pipe structure of the present invention;

[0015] Figure 3 A V-type engine intake pipe structure of the present invention Figure 1 A top view of

[0016] Figure 4 A V-type engine intake pipe structure of the present invention Figure 3 Cross-section of the middle AA;

[0017] Figure 5 A V-type engine intake pipe structure of the present invention Figure 3 A partial cross-sectional view of

[0018] Figure 6 The following is a structural diagram of the air intake of an existing in-line engine;

[0019] Figure 7 The figure is a schematic diagram of the installation structure of the intake pipe of an existing in-line engine.

[0020] In the figure: 1. Inlet pipe; 2. Pressure stabilizing chamber; 3. Left air intake pipe; 4. Right air intake pipe. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] Reference Figure 1-5 As shown, a V-type engine intake pipe structure comprises: an intake pipe, the exterior of which is provided with an inlet pipe 1 connected to an intercooler, a left intake pipe 3 connected to a left cylinder of the engine, and a right intake pipe 4 connected to a left cylinder of the engine, and the inlet pipe 1, the left intake pipe 3, and the right intake pipe 4 are all integrated with the intake pipe; and

[0024] The pressure stabilizing chamber 2 is opened inside the inlet pipe 1 , and the inlet pipe 1 , the left air intake pipe 3 and the right air intake pipe 4 are all connected to the pressure stabilizing chamber 2 .

[0025] Reference Figure 4 The cross section of the pressure stabilizing chamber 2 is trumpet-shaped.

[0026] Reference Figure 4 The cross-sections of the left air intake pipe 3 and the right air intake pipe 4 are both rectangular, and the width of the right air intake pipe 4 is greater than that of the left air intake pipe 3.

[0027] Reference Figure 4 The two side walls where the inlet pipe 1 is connected to the intake pipe are inclined toward the right intake pipe 4.

[0028] Reference Figure 2 , the inlet pipe 1 is cylindrical.

[0029] The V-type engine intake pipe structure of the present invention has an inlet pipe 1 which is cylindrical and convenient for connecting with the intercooler. The gas after supercharging and intercooling enters the intake pipe through it. The pressure stabilizing chamber 2 spans the V-shaped groove of the engine and bridges the left and right cylinders of the V-type engine. The cross section is trumpet-shaped. The left intake pipe 3 and the right intake pipe 4 are respectively connected to the left and right cylinders of the engine. The cross sections are both rectangular. The entire intake pipe is an integrated structure, and there is no installation connection between the parts.

[0030] After being supercharged and intercooled, the gas enters the pressure stabilizing chamber 2 through the inlet pipe 1. Since the cross-section of the pressure stabilizing chamber 2 is trumpet-shaped and its volume is much larger than the gas volume required for each working cycle of each cylinder, the gas after being supercharged and intercooled will quickly gather in the pressure stabilizing chamber 2 and form a gas source with a certain stable pressure. When the engine is working, the gas in the pressure stabilizing chamber 2 continuously enters the left and right cylinders through the left intake pipe 3 and the right intake pipe 4, thereby ensuring that the intake pressure of each cylinder is consistent.

[0031] from Figure 4 It can be seen that the distance that the gas enters the left intake pipe 3 is shorter than the distance that the gas enters the right intake pipe 4. If there is no interference, the gas is more likely to be sucked into the left cylinder. In order to ensure that the gas flow rate entering the left and right cylinders of the V-type machine is the same, the wall surfaces of the pressure stabilizing chamber 2 are specially designed. Figure 5As shown, the entrance of the pressure stabilizing chamber 2 is designed with an upwardly inclined wall surface, which is used to guide the gas into the pressure stabilizing chamber 2 instead of directly entering the left intake pipe 3; at the same time, the two side walls where the inlet pipe 1 is connected to the intake pipe are inclined toward the right intake pipe 4, guiding the airflow to flow more smoothly to the right intake pipe 4. Among them, the angle between the two side walls where the inlet pipe 1 is connected to the intake pipe is β, and the angle between the side wall where the inlet pipe 1 is connected to the right intake pipe 4 and the central axis of the inlet pipe 1 is α. The reasonable direction of the airflow is controlled by controlling the size of the angles α and β. At the same time, the width W of the right intake pipe 4 is designed to be larger than the width of the left intake pipe 3, ensuring that the gas flow rate entering the left and right cylinders per unit time is consistent, thereby ensuring that the gas flow rate required for each working cycle of each cylinder is consistent.

[0032] In summary, the present invention provides a V-type engine intake pipe structure design to meet the requirement of uniform intake of cylinders on the left and right sides of the V-type engine, and solves the problem of uneven intake on the left and right sides of the V-type engine resulting in poor combustion and poor performance.

[0033] Reference Figure 6-7 As shown, in the existing inline engine, A is the air intake, B is the cylinder head, and C is the air intake pipe. When in use, since the V-type engine has cylinders on the left and right sides due to its special structure, both sides need to be equipped with air intake pipes. At this time, the gas after supercharging and intercooling needs to be reasonably distributed to the left and right cylinders to ensure the stable operation of the engine. Otherwise, if the air intake on one side is large and the air intake on the other side is small, it will lead to uneven work on both sides, and the side with small air intake will have problems such as poor combustion and high exhaust temperature. However, due to the existence of the V-shaped span and the structural limitations of the engine itself, the direction, length, and diameter of the air intake pipes leading to both sides cannot be designed to be exactly the same. In addition, the characteristics of the V-type engine that the left and right sides alternately intake air and work, the left and right sides are prone to "snatching air" phenomenon.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A V-type engine intake pipe structure, characterized in that: include: An air intake pipe, the exterior of which is provided with an inlet pipe (1) connected to the intercooler, a left air intake pipe (3) connected to the left cylinder of the engine, and a right air intake pipe (4) connected to the right cylinder of the engine, and the inlet pipe (1), the left air intake pipe (3) and the right air intake pipe (4) are all integrated with the air intake pipe; and A pressure stabilizing chamber (2) is provided inside the inlet pipe (1), and the inlet pipe (1), the left air intake pipe (3) and the right air intake pipe (4) are all in communication with the pressure stabilizing chamber (2); The distance that the gas in the pressure stabilizing chamber (2) enters the left air intake pipe (3) is shorter than the distance that the gas enters the right air intake pipe (4), the entrance of the pressure stabilizing chamber (2) has an upwardly inclined wall surface, and the two side walls of the inlet pipe (1) connected to the air intake pipe are inclined toward the right air intake pipe (4); The cross section of the pressure stabilizing chamber (2) is trumpet-shaped; The cross-sections of the left air intake pipe (3) and the right air intake pipe (4) are both rectangular, and the width of the right air intake pipe (4) is greater than that of the left air intake pipe (3).

2. The V-type engine intake pipe structure according to claim 1, characterized in that: The inlet pipe (1) is cylindrical.

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