A supercharging module for a V-type diesel engine

Abstract

The present invention provides a supercharging module for a V-shaped diesel engine, wherein the V-shaped diesel engine has a V-shaped recessed area, and the supercharging module comprises: a supercharger, a module base and a support assembly. The supercharger comprises a turbine and a connecting shaft, wherein the connecting shaft is connected to the turbine; the module base is arranged in the V-shaped recessed area; the supercharger is arranged on the module base through the support assembly; the axis of the connecting shaft is perpendicular to the crankshaft axis of the diesel engine and parallel to the module base. The supercharging module according to the present invention can make full use of the spatial characteristics (i.e., large length and small width) in the V-shaped area of ​​the V-shaped diesel engine, and significantly reduce the overall size of the diesel engine by arranging the supercharging module in the V-shaped recessed area of ​​the diesel engine itself.

Description

Technical Field

[0001] The present invention generally relates to the field of marine engines, and more particularly to a supercharging module for a V-type diesel engine. Background Art

[0002] High-power marine diesel engines generally use supercharging technology. The supercharger and air cooler inlet and exhaust pipes of the supercharging system are relatively large in size. The layout of the supercharging system directly affects the maximum dimensions in length, width and height. Therefore, the reasonable layout of the supercharging system is crucial to reducing the size of the entire machine.

[0003] The layout of the supercharging system is mainly determined by the layout of the supercharger and the air cooler. At present, the layout of the supercharging system of a large-power marine diesel engine can be divided into the following situations: the supercharger and the air cooler are arranged at the same end of the diesel engine or at both ends of the end.

[0004] The supercharger and air cooler of the diesel engine are arranged at one end of the diesel engine, and the supercharging system obviously protrudes from other components, which directly causes the overall size of the diesel engine to be too large; the arrangement of the supercharger and air cooler at both ends has a certain improvement on the overall size of the diesel engine, but due to the long distance between the supercharger and the air cooler, the volume of the intake pipe before the intercooler is too large, which is not conducive to the acceleration performance of the diesel engine; at the same time, in order to provide a supporting surface for the supercharger, most of the superchargers are arranged at the end of the diesel engine, which significantly increases the overall size of the diesel engine.

[0005] Therefore, a supercharging module for a V-type diesel engine is needed to at least partially solve the above problems. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] In order to at least partially solve the above technical problems, the present invention provides a V-type diesel engine supercharging module, wherein the V-type diesel engine has a V-shaped recessed area, and comprises:

[0008] A supercharger, the supercharger comprising a turbine and a connecting shaft, the connecting shaft being connected to the turbine;

[0009] A module base, the module base being disposed in the V-shaped recessed area; and

[0010] A support assembly, wherein the supercharger is arranged on the module base through the support assembly;

[0011] Wherein, the axis of the connecting shaft is perpendicular to the crankshaft axis of the V-type diesel engine and parallel to the module base.

[0012] The boost module described in the present invention is arranged in the V-shaped recessed area of ​​the V-shaped diesel engine, and the axis of the supercharger in the boost module is perpendicular to the crankshaft axis of the diesel engine. This arrangement allows the boost module to fully utilize the space in the length and width directions of the V-shaped recessed area (i.e., the space along the axial direction of the crankshaft and the space perpendicular to the axial direction of the crankshaft); especially in the length direction, the total rotational inertia of the supercharger can be reduced by arranging multiple small superchargers, which is beneficial for the diesel engine to obtain good dynamic performance; in summary, the boost module described in the present invention can more fully utilize the spatial characteristics in the V-shaped area of ​​the V-shaped diesel engine (i.e., the length dimension is large and the width dimension is small), and the overall size of the diesel engine can be significantly reduced by arranging the boost module in the V-shaped recessed area of ​​the diesel engine itself.

[0013] Optionally, at least two superchargers are arranged on the module base to reduce the total rotational inertia of the superchargers.

[0014] Optionally, an air outlet pipe is further included, and the air outlet pipe is located above the supercharger. A bracket is provided on the module base for supporting the air outlet pipe.

[0015] Optionally, the support assembly comprises:

[0016] a supercharger support, the supercharger support being disposed on the module base and being used to support the supercharger; and

[0017] A volute support frame is connected to the module base and the supercharger, and a connection between the supercharger and the volute support frame is arranged on the outer shell of the turbine.

[0018] Optionally, the bracket fixes the air outlet pipe by clamping or board fixing. A clamp is provided above the bracket, which can not only firmly fix the air intake pipe but also has a certain displacement compensation capability, which is conducive to adapting to thermal deformation of the air intake pipe.

[0019] Optionally, the module base further comprises a base bracket, wherein the base bracket is used to fix the module base on the V-type diesel engine, and the base bracket and the module base form a gantry structure.

[0020] Optionally, it further comprises a main exhaust gas intake pipe connected to the exhaust gas inlet of the supercharger, wherein the main exhaust gas intake pipe is arranged below the module base, and the main exhaust gas intake pipe is connected to the cylinder exhaust gas pipe located on the same side.

[0021] Optionally, one main exhaust gas intake pipe is provided on each side of the V-shaped recessed area of ​​the V-shaped diesel engine, and both ends of each main exhaust gas intake pipe are respectively connected to the exhaust gas inlet of the supercharging module.

[0022] The supercharging module of the present invention integrates the exhaust gas pipelines of each cylinder of the diesel engine into a main exhaust gas intake pipeline, which is conducive to achieving smoothness of intake and exhaust flow and consistency of the working state of the supercharger.

[0023] Optionally, the exhaust gas outlets and air inlets of two adjacent superchargers are arranged in the same direction.

[0024] Optionally, the exhaust gas outlets and air inlets of two adjacent superchargers are arranged in opposite directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the advantages of the present invention more easily understood, the present invention briefly described above will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. It can be understood that these drawings only depict typical embodiments of the present invention and therefore should not be considered as limiting the scope of protection thereof, and the present invention is described and explained with additional characteristics and details through the accompanying drawings.

[0026] Figure 1 A partial cross-sectional view of the supercharging module according to the present invention along the axis direction of the diesel engine crankshaft;

[0027] Figure 2 for Figure 1 Partial left view of .

[0028] Description of reference numerals:

[0029] 1: Booster 2: Module base

[0030] 21: Base bracket 3: Support assembly

[0031] 31: Turbocharger support 32: Vortex casing support

[0032] 4: Bracket 41: Hoop

[0033] 5: Air outlet duct 6: Main exhaust air intake duct

[0034] 61: Cylinder exhaust pipe 7: Air cooler DETAILED DESCRIPTION

[0035] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features well known in the art are not described.

[0036] In order to fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0037] Figure 1 The figure shows a partial cross-sectional view of a supercharging module according to the present invention along the axis of the diesel engine crankshaft, wherein the module base 2 is arranged in a V-shaped recessed area of ​​the diesel engine, and the supercharger 1 is arranged on the module base 2 through a supporting assembly 3. The supercharger 1 includes a turbine and a connecting shaft, and the connecting shaft is connected to the turbine. The axis of the connecting shaft of the supercharger is perpendicular to the crankshaft axis of the diesel engine and parallel to the module base 2.

[0038] This arrangement allows the supercharger module to make full use of the space in the length and width directions of the V-shaped concave area (i.e., the space along the axial direction of the crankshaft and the space perpendicular to the axial direction of the crankshaft); all superchargers 1 are arranged in the V-shaped concave area of ​​the diesel engine itself, which significantly reduces the overall size of the diesel engine; at the same time, in the length direction, multiple small superchargers 1 can be arranged to replace the supercharging function of the original large supercharger, thereby reducing the total moment of inertia of the supercharger 1, which is conducive to the diesel engine to obtain good dynamic performance. It should be understood by those skilled in the art that when multiple small superchargers are used to replace a large supercharger, when the supercharging effect is similar, the former can greatly reduce the total moment of inertia of the supercharger and improve the dynamic performance of the diesel engine. In this embodiment, the number of small superchargers arranged is 4, and in other cases, the specific number of superchargers should be determined according to actual needs.

[0039] Continue reading Figure 1 As shown, the air outlet pipe 5 is located above the supercharger 1, one end of the air outlet pipe 5 is connected to the air outlet of the supercharger 1, and the other end is connected to the air cooler 7, which is used to send the air pressurized by the supercharger to the air cooler for cooling. The bracket 4 in this embodiment is used to support the air outlet pipe 5. The specific structure of the bracket 4 is an I-shaped structure to reduce weight. It should be understood by those skilled in the art that the bracket 4 can also be other structures such as channel steel or hollow pipe sections.

[0040] Specifically, the bracket 4 fixes the air outlet pipe 5 by a clamp or a plate. A clamp 41 is arranged above the bracket 4, which can fix the air outlet pipe 5 and has a certain displacement compensation capability, which is conducive to adapting to the thermal deformation of the air outlet pipe 5.

[0041] Furthermore, the module base 2 is fixed to the diesel engine by a base bracket 21, and the base bracket 21 and the module base 2 form a gantry structure. A main exhaust gas intake pipe 6 is provided below the module base 2, and both ends of the main exhaust gas intake pipe 6 are respectively connected to the exhaust gas inlets of the two superchargers 1, and a plurality of openings are provided on the main exhaust gas intake pipe 6 to communicate with the cylinder exhaust pipe 61 located on the same side. The exhaust gas in the cylinder is gathered in the main exhaust gas intake pipe 6 through the cylinder exhaust pipe 61 and enters the supercharger 1 through the supercharger exhaust gas inlet from both ends of the main exhaust gas intake pipe 6. Those skilled in the art will appreciate that the main exhaust gas intake pipe 6 can be connected to the exhaust gas inlet of the supercharger 1 only at both ends to ensure that the exhaust gas influence effect on each supercharger is the same, so that the main exhaust gas intake pipe 6 plays the role of integrating the exhaust gas without affecting the consistency of the working state of the supercharger. Figure 1 In the illustrated embodiment, a total of four main exhaust gas intake pipes 6 are provided, with two main exhaust gas intake pipes 6 being provided on each side of the V-shaped recessed area.

[0042] In some embodiments of the present invention, the exhaust gas outlets and air inlets of two adjacent superchargers 1 are arranged in the same direction.

[0043] In some embodiments of the present invention, the exhaust gas outlets and air inlets of two adjacent superchargers 1 are arranged in opposite directions.

[0044] See also Figure 2 As shown, it is Figure 1 The left view shows a supercharger support 31 which is arranged on the module base 2 for supporting the supercharger 1; the volute support frame 32 connects the module base 2 and the supercharger 1, and the connection between the supercharger 1 and the volute support frame 32 is arranged on the outer casing of the turbine.

[0045] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "component" and the like appearing herein may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing herein may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0046] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and illustration, and are not intended to limit the present invention to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention.

Claims

1. A supercharging module for a V-type diesel engine, wherein the V-type diesel engine has a V-shaped concave area, characterized in that: include: A module base, the module base being arranged in the V-shaped recessed area; A supercharger, the supercharger comprising a turbine and a connecting shaft, the connecting shaft being connected to the turbine, the axis of the connecting shaft being perpendicular to the crankshaft axis of the V-type diesel engine and parallel to the module base; A support assembly, wherein the supercharger is arranged on the module base through the support assembly; An air outlet pipe is located above the supercharger. A bracket is provided on the module base for supporting the air outlet pipe. The bracket fixes the air outlet pipe by clamping or board fixing. a main exhaust gas intake pipe, the main exhaust gas intake pipe is connected to the exhaust gas inlet of the supercharger, the main exhaust gas intake pipe is arranged below the module base, and the main exhaust gas intake pipe is connected to the cylinder exhaust gas pipe located on the same side, At least one main exhaust gas intake pipe is arranged on each side of the V-shaped recessed area of ​​the V-shaped diesel engine, and both ends of each main exhaust gas intake pipe are respectively connected to the exhaust gas inlets of the two superchargers.

2. The boost module according to claim 1, characterized in that: The support assembly comprises: a supercharger support, the supercharger support being disposed on the module base and being used to support the supercharger; and A volute support frame is connected to the module base and the supercharger, and a connection between the supercharger and the volute support frame is arranged on the outer shell of the turbine.

3. The boost module according to claim 1, characterized in that: The module base also includes a base bracket, which is used to fix the module base on the V-type diesel engine, and the base bracket and the module base form a gantry structure.

4. The boost module according to any one of claims 1 to 3, characterized in that: The exhaust gas outlets of two adjacent superchargers are arranged in the same direction.

5. The boost module according to any one of claims 1 to 3, characterized in that: The exhaust gas outlets of two adjacent superchargers are arranged in opposite directions.

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