Intake manifold structure of V-shaped double-cylinder internal combustion engine

Abstract

The utility model discloses an intake manifold structure of a V-shaped double-cylinder internal combustion engine, which comprises a cylinder body, a front cylinder head and a rear cylinder head are arranged on the cylinder body, the air inlet ends of the front cylinder head and the rear cylinder head are respectively and singly communicated with the air outlet ends of two air cavities of an intake manifold, and an electronic throttle valve is arranged on the intake manifold. And two throats of the electronic throttle valve are respectively and singly communicated with the air inlet ends of the two air cavities of the air inlet manifold. According to the intake manifold, the two air cavities are adopted for supplying air to the front air cylinder and the rear air cylinder respectively, air intake of the two air cylinders does not interfere with each other, the two air cylinders work independently, the phenomenon that the front air cylinder and the rear air cylinder scramble air is avoided, the combustion effect of the air cylinders is not affected, the performance of the internal combustion engine is improved, and the service life of parts of the internal combustion engine is prolonged. In addition, the use of the double-throat electronic throttle valve can respectively control independent air intake of the two air cavities of the air intake manifold, and mutual influence is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion engine intake manifolds, in particular to an intake manifold structure for a V-type twin-cylinder internal combustion engine. Background Art

[0002] At present, the intake port of the intake manifold used in a V-type twin-cylinder internal combustion engine is in a single-chamber state. Due to the design space limitation of the intake manifold of the V-type twin-cylinder internal combustion engine, the volume of the pressure stabilizing chamber is generally small, and the single chamber supplies air to the front and rear cylinders, resulting in the phenomenon of air robbing between the front and rear cylinders during the operation of the V-type twin-cylinder internal combustion engine, resulting in lean combustion in one cylinder and rich combustion in the other cylinder, affecting the combustion effect of the cylinder, reducing the service life of the hot engine parts of the internal combustion engine, and reducing the performance of the internal combustion engine. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an intake manifold structure for a V-type twin-cylinder internal combustion engine to solve the problem that the intake manifold is in a single-chamber state and the single chamber supplies air to the front and rear cylinders, resulting in the phenomenon of air robbing between the front and rear cylinders during the operation of the V-type twin-cylinder internal combustion engine.

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

[0005] An intake manifold structure for a V-type twin-cylinder internal combustion engine, including a cylinder block, the cylinder block is provided with a front cylinder head and a rear cylinder head, the intake ends of the front cylinder head and the rear cylinder head are respectively and singly communicated with the outlet ends of two air chambers of the intake manifold, an electronic throttle valve is installed on the intake manifold, and the two throats of the electronic throttle valve are respectively and singly communicated with the intake ends of the two air chambers of the intake manifold.

[0006] A further technical solution is: fuel injector fixing seats are installed at the tails of the two air chambers of the intake manifold, fuel injectors are installed on the fuel injector fixing seats, and the oil outlet ends of the fuel injectors are located in the air chambers.

[0007] A further technical solution is: a heat insulation plate is arranged between the intake manifold and the electronic throttle valve.

[0008] A further technical solution is: the heat insulation plate is sealed with the electronic throttle valve and the intake manifold through an O-ring seal.

[0009] A further technical solution is: the intake manifold is sealed with the front cylinder head and the rear cylinder head through special-shaped seals.

[0010] A further technical solution is: integrated temperature and pressure sensors are installed on the two air chambers of the intake manifold.

[0011] Compared with the prior art, the utility model can at least achieve one of the following beneficial effects:

[0012] The utility model provides an intake manifold structure for a V-type twin-cylinder internal combustion engine. The intake manifold uses two air cavities to supply air to the front and rear cylinders respectively. The air intakes of the two cylinders do not interfere with each other and work independently, avoiding the phenomenon of air robbing between the front and rear cylinders, not affecting the combustion effect of the cylinders, and improving the performance of the internal combustion engine and the service life of the parts of the internal combustion engine. In addition, the use of an electronic throttle can independently control the air intake of the two air cavities of the intake manifold to avoid mutual influence. Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of an intake manifold structure for a V-type twin-cylinder internal combustion engine of the utility model.

[0014] Reference numerals: 1, throttle valve body; 2, O-ring seal; 3, heat insulation plate; 4, fuel injector fixing seat; 5, fuel injector; 6, intake manifold; 7, integrated temperature and pressure sensor; 8, special-shaped seal; 9, front cylinder head; 10, rear cylinder head. Detailed Description of the Specific Embodiment

[0015] To make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Usually, the components of the embodiments of the utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents the selected embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts fall within the scope of protection of the utility model.

[0017] It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0018] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Embodiment 1:

[0022] As shown in this embodiment Figure 1 An intake manifold structure of a V-type twin-cylinder internal combustion engine includes a cylinder block, on which there are a front cylinder head 9 and a rear cylinder head 10. The intake ends of the front cylinder head 9 and the rear cylinder head 10 are respectively in single communication with the outlet ends of the two air chambers of the intake manifold 6. An electronic throttle valve 1 is installed on the intake manifold 6, and the two throats of the electronic throttle valve 1 are respectively in single communication with the intake ends of the two air chambers of the intake manifold 6.

[0023] The two throats of the electronic throttle valve 1 are opened and closed by its own driving motor to supply air to the two air chambers of the intake manifold 6. The air enters the front cylinder head 9 and the rear cylinder head 10 respectively through the two air chambers of the intake manifold 6 to achieve combustion assistance. The front and rear cylinders intake air separately through the intake manifold 6, effectively eliminating the phenomenon of air robbing between the front and rear cylinders, making the intake and combustion of the front and rear cylinders of the internal combustion engine stable, thereby improving the performance of the internal combustion engine and the service life of the hot engine parts.

[0024] Preferably, fuel injector fixing seats 4 are installed at the tails of the two air chambers of the intake manifold 6, fuel injectors 5 are installed on the fuel injector fixing seats 4, and the oil outlet ends of the fuel injectors 5 are located inside the air chambers.

[0025] The fuel injectors 5 spray fuel mist into the tails of the air chambers of the intake manifold 6, mainly to reduce the travel of the fuel mist in the intake manifold 6, so that the fuel mist can quickly reach the cylinder block of the internal combustion engine.

[0026] Preferably, a heat insulation plate 3 is provided between the intake manifold 6 and the electronic throttle valve 1.

[0027] The heat insulation plate 3 prevents the heat of the internal combustion engine from being transferred to the electronic throttle valve 1 through the intake manifold 6, and is used to protect the electronic throttle valve 1 from the influence of high temperature.

[0028] Preferably, the heat insulation plate 3 is sealed with the electronic throttle valve 1 and the intake manifold 6 through an O-ring seal 2.

[0029] The O-ring seal 2 plays a sealing role.

[0030] Preferably, the intake manifold 6 is sealed with the front cylinder head 9 and the rear cylinder head 10 through a special-shaped seal ring 8.

[0031] The special-shaped seal ring 8 plays a sealing role

[0032] Preferably, an integrated temperature and pressure sensor 7 is installed on both air cavities of the intake manifold 6.

[0033] The integrated temperature and pressure sensor 7 can monitor the temperature and humidity of the cylinder at all times to ensure the normal working state.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intake manifold structure of a V-type twin-cylinder internal combustion engine, comprising a cylinder block, wherein the cylinder block has a front cylinder head (9) and a rear cylinder head (10), characterized in that: The air intake ends of the front cylinder head (9) and the rear cylinder head (10) are respectively connected to the air outlet ends of the two air cavities of the intake manifold (6) in a single connection; an electronic throttle valve (1) is installed on the intake manifold (6), and the two throats of the electronic throttle valve (1) are respectively connected to the air intake ends of the two air cavities of the intake manifold (6) in a single connection.

2. The intake manifold structure of a V-type twin-cylinder internal combustion engine according to claim 1, characterized in that: The tails of the two air cavities of the intake manifold (6) are both equipped with fuel injector fixing seats (4), fuel injectors (5) are installed on the fuel injector fixing seats (4), and the fuel outlet end of the fuel injector (5) is located in the air cavity.

3. The intake manifold structure of a V-type twin-cylinder internal combustion engine according to claim 1, characterized in that: A heat insulation plate (3) is provided between the intake manifold (6) and the electronic throttle valve (1).

4. The intake manifold structure of a V-type twin-cylinder internal combustion engine according to claim 3, characterized in that: The heat insulation plate (3) is sealed with the electronic throttle valve (1) and the intake manifold (6) via an O-ring (2).

5. The intake manifold structure of a V-type twin-cylinder internal combustion engine according to claim 1, characterized in that: The intake manifold (6) is sealed with the front cylinder head (9) and the rear cylinder head (10) via a special-shaped sealing ring (8).

6. The intake manifold structure of a V-type twin-cylinder internal combustion engine according to claim 1, characterized in that: An integrated temperature and pressure sensor (7) is installed on both air cavities of the intake manifold (6).

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