A V-type engine layout structure

Abstract

This utility model discloses a V-type engine layout structure, including a cylinder block, a first oil-gas separator, and a second oil-gas separator. The first and second oil-gas separators are respectively mounted on the front and rear ends of the cylinder block via brackets. The first oil-gas separator returns oil to the oil filler port via a first return oil pipe, and the second oil-gas separator returns oil to the bottom of the oil pan via a second return oil pipe. This utility model has advantages such as compact structure and good assemblability.

Description

Technical Field

[0001] This utility model relates to the field of engine layout technology, and in particular to a layout structure for a V-type engine. Background Technology

[0002] Large-displacement engines are initially applied in the marine electrical applications market, where demand far exceeds that of the construction machinery market. Currently, all large-displacement engines used in domestic construction machinery are imported brands, and their air intake systems follow the water-air cooling scheme used in marine engines. This is mainly because developing new air-air intercooled engine solutions requires CAE analysis of the intake system. Many components, such as intake and exhaust pipes and turbochargers, need to be redeveloped, re-simulated, and subjected to performance, calibration, and reliability tests. This requires a significant investment of capital and manpower, and it will take at least 3-5 years before the engines can be launched to the market, generate sales, and generate revenue. The initial investment is substantial.

[0003] Existing patent document CN116447009A discloses a V-type large-displacement air-to-air intercooled engine for engineering machinery, which omits a set of auxiliary water pump cooling system and water-to-air intercooler for cooling the intake air, thereby reducing costs and reserving more space at the top of the cylinder block for easier maintenance.

[0004] Existing patent document CN116717392A discloses a high-power-density V16 engine that employs a structure that supports the cylinder liner at the center of the cylinder bore. This allows for the maximum cylinder diameter with a fixed cylinder center distance, or the minimum cylinder center distance with a fixed cylinder diameter, thereby achieving overall engine lightweighting. Patent document CN116717392A uses a high-temperature water circulation system and a low-temperature water circulation system to cool the engine and intake manifold, respectively.

[0005] Existing patent document CN110056407B discloses a distribution structure that integrates cooling water channels, oil channels, oil cooler brackets, oil filter brackets, breather brackets, sensor mounting bases, etc. into one unit.

[0006] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0007] The main purpose of this utility model is to propose a compact and easily assemblable arrangement structure for a V-type engine.

[0008] Therefore, this utility model proposes a V-type engine arrangement structure.

[0009] Preferably, the present invention may also have the following technical features:

[0010] A V-type engine layout includes a cylinder block, a first oil-gas separator, and a second oil-gas separator. The first oil-gas separator and the second oil-gas separator are respectively mounted on the front end and rear end of the cylinder block via brackets. The first oil-gas separator returns oil to the oil filler port through a first oil return pipe, and the second oil-gas separator returns oil to the bottom of the oil pan through a second oil return pipe.

[0011] Furthermore, the lower end of the first return oil pipe is designed as a hook structure, which is a U-shaped pipe or a V-shaped pipe structure.

[0012] Furthermore, the second return oil pipe returns oil to below the oil level in the oil pan.

[0013] Furthermore, the distribution body is installed at the front end of the cylinder block, and the first oil-gas separator is fixed to the side of the distribution body by a first mounting bracket.

[0014] Furthermore, it also includes a thermostat, which is mounted on the top of the cylinder block via a bracket plate and on the side of the distribution body; the top of the thermostat is also provided with a large circulation port and the side is provided with a small circulation port; a first pipe is provided to connect the small circulation port and one end of the high-temperature water passage of the distribution body, and a second pipe is provided to connect the other end of the high-temperature water passage and the water pump.

[0015] Furthermore, the first oil-gas separator and the second oil-gas separator are respectively connected to an exhaust pipe, the lower end of which extends downward.

[0016] Furthermore, a bracket is provided in the middle of the air outlet pipe to connect to the cylinder block or water pump.

[0017] Furthermore, it also includes a thermostat, cylinder head, and water outlet manifold. Each side of the cylinder block has a row of cylinder bores. A water outlet manifold is installed on the outer side of each row of cylinder bores. The water outlet manifold has branch pipes that connect to the cooling water jackets of each cylinder bore. Multiple cylinder heads are respectively assembled on each cylinder bore.

[0018] The beneficial effects of this invention compared to existing technologies include: by designing a hook structure, some engine oil accumulates at the hook portion of the first return oil pipe, preventing air from flowing inside the first return oil pipe. Similarly, the second return oil pipe returns oil to the bottom of the oil pan, preferably below the oil level, meaning the interface on the oil pan connecting to the second return oil pipe is located below the oil level, preventing air from the oil pan from flowing into the second return oil pipe. Making the small circulation return water pipe into three sections, with the high-temperature water passage of the distributor as the intermediate pipe, improves the connection stability of the entire pipeline, eliminates the need for a separate support to fix the small circulation return water pipe, and improves assembly reliability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial schematic diagram of the present invention, omitting parts such as the oil cooler exhaust pipe. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0022] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0023] like Figures 1-2 The illustration shows the arrangement of a V-type engine, with this embodiment using a 16-cylinder V-type engine as an example. It includes a cylinder block 1, a first oil-gas separator 8, and a second oil-gas separator 10. The first oil-gas separator 8 and the second oil-gas separator 10 are respectively mounted on the front and rear ends of the cylinder block 1 via brackets. The return oil pipe of the first oil-gas separator 8 is connected to the oil filler port 9; the return oil pipe of the second oil-gas separator 10 is connected to the oil pan.

[0024] Generally, when the oil level in the oil pan 11 is insufficient, opening the valve at the oil filler port 9 allows for the replenishment of oil into the oil pan 11. Furthermore, the oil separated from the oil vapor by the oil-gas separators (8, 10) also returns to the oil pan 11 for recycling via the return oil pipe. For example, in this embodiment, according to the overall layout, the first oil-gas separator 8 returns oil to the oil filler port 9 via the first return oil pipe 82, and the second oil-gas separator 10 returns oil to the bottom of the oil pan via the second return oil pipe 101. Preferably, the lower end of the first return oil pipe 82 is designed with a hook structure, such as a U-shaped or V-shaped pipe. This hook structure allows some oil to accumulate at the hook of the first return oil pipe 82, preventing air from moving inside the first return oil pipe 82. Similarly, the second oil return pipe 101 returns oil to the bottom of the oil pan, preferably to below the oil level in the oil pan. That is, the interface 12 on the oil pan that connects to the second oil return pipe 101 is located below the oil level to prevent air from flowing into the second oil return pipe 101 from the oil pan.

[0025] The distribution body 6 is mounted on the front end of the cylinder block 1. The distribution body 6 adopts an existing structure, such as the distribution body structure disclosed in existing patent document CN110056407B, which includes an upper mounting part, a lower mounting part, a left mounting part, a right mounting part, a front mounting part, and a rear mounting part. The upper part of the distribution body is connected to an oil cooler 5, which integrates an oil inlet passage, an oil return passage, a cooling water inlet passage, and a cooling water return passage. The first mounting bracket 84 of the first oil-gas separator is fixed to the side of the distribution body 6, for example, by opening a screw hole on the outside of the high-temperature water passage 61 of the distribution body 6 to connect the first mounting bracket 84. The other ends of the oil-gas inlet pipes of the first oil-gas separator 8 and the second oil-gas separator 10 are respectively connected to the top of the cylinder block 1 and connected to the crankcase oil-gas passage.

[0026] The first oil-gas separator 8 and the second oil-gas separator 10 are also respectively connected to air outlet pipes (81, 102). The lower ends of the air outlet pipes (81, 102) extend downwards, and the air coming out of the oil-gas separator is discharged into the atmosphere through the air outlet pipes (81, 102). Preferably, the middle part of the air outlet pipe (81, 102) is provided with a bracket to connect to the cylinder block or water pump, which enhances the installation stability of the air outlet pipe.

[0027] It also includes a thermostat 4, cylinder heads 2, and a main water outlet pipe 3. In a V-type engine, the cylinder block 1 has a row of cylinder bores on each side, and multiple cylinder heads 2 are respectively mounted on each cylinder bore. A main water outlet pipe 3 is installed on the outer side of each of the two rows of cylinder bores, and the main water outlet pipe 3 has branch pipes that connect to the cooling water jackets of each cylinder bore. During operation, the cooling water in the cooling water jackets of each cylinder bore enters the main water outlet pipe 3 through the branch pipes, and then returns to the thermostat 4.

[0028] The thermostat 4 is mounted on top of the cylinder block 1 via a bracket plate, and is located on the side of the distribution body 6. The thermostat 4 also has a large circulation port 41 on its top and a small circulation port on its side. More specifically, a first pipe 42 connects the small circulation port to one end of the high-temperature water passage 61 of the distribution body 6, and a second pipe 71 connects the other end of the high-temperature water passage 61 to the water pump 7. Thus, the first pipe 42, the second pipe 71, and the high-temperature water passage 61 form a small circulation return pipe that returns water to the water pump 7. Making the small circulation return pipe into three sections, with the high-temperature water passage 61 of the distribution body 6 as the intermediate pipe, improves the connection stability of the entire pipeline, eliminates the need for a separate bracket to fix the small circulation return pipe, and improves assembly ease.

[0029] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0030] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. An arrangement of a V-type engine comprising a cylinder block, a first oil-gas separator, and a second oil-gas separator, characterized by: The first oil-gas separator and the second oil-gas separator are respectively mounted on the front and rear ends of the cylinder block via brackets; wherein, the first oil-gas separator returns oil to the oil filler port through the first oil return pipe, and the second oil-gas separator returns oil to the bottom of the oil pan through the second oil return pipe.

2. The arrangement of a V-type engine as claimed in claim 1, characterized in that: The lower end of the first return oil pipe is designed as a hook structure, which is a U-shaped pipe or a V-shaped pipe structure.

3. The arrangement of a V-type engine according to claim 1, characterized in that: The second return oil pipe returns oil to below the oil level in the oil pan.

4. The arrangement of a V-type engine according to claim 1, characterized in that: The distribution body is installed at the front end of the cylinder block, and the first oil-gas separator is fixed to the side of the distribution body by a first mounting bracket.

5. The arrangement of a V-type engine as claimed in claim 4, characterized in that: It also includes a thermostat, which is mounted on the top of the cylinder block via a bracket plate and on the side of the distributor; the top of the thermostat is also provided with a large circulation port and the side is provided with a small circulation port; A first pipeline is provided to connect one end of the high-temperature water passage of the small circulation interface and the distribution body, and a second pipeline is provided to connect the other end of the high-temperature water passage and the water pump.

6. The arrangement of a V-type engine according to claim 1, characterized in that: The first oil-gas separator and the second oil-gas separator are also respectively connected to an outlet pipe, the lower end of which extends downward.

7. The arrangement of a V-type engine as claimed in claim 6, characterized in that: The middle part of the air outlet pipe is equipped with a bracket to connect the cylinder block or water pump.

8. The arrangement of a V-type engine according to claim 1, characterized in that: It also includes a thermostat, cylinder head and water outlet manifold. The cylinder block has a row of cylinder holes on each side. A water outlet manifold is installed on the outer side of each of the two rows of cylinder holes. The water outlet manifold has branch pipes that connect to the cooling water jackets of each cylinder hole. Multiple cylinder heads are respectively assembled on each cylinder hole.

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