A V-type 14-cylinder high-pressure common rail engine

Abstract

The utility model discloses a V type 14 cylinder high pressure common rail engine, including cylinder body, fuel system and fuel injector, wherein, the cylinder hole is symmetrically seted up in the both sides of cylinder body, and the cylinder hole is along the length direction distribution of cylinder body in each side, and the cylinder hole is 7 in each side, wherein, fuel system includes the high pressure oil pump who links with fuel tank intercommunication, and a plurality of common rail pipes who are communicated with high pressure oil pump and mutually series connection, the utility model discloses through setting 7 cylinder holes in the both sides of cylinder body symmetry each, makes the whole engine to present 14 cylinder's form, fills up the vacancy of market 14 cylinder engine, satisfies the requirement of specific power design, avoids the situation of engine power deficiency or margin.

Description

Technical Field

[0001] This utility model belongs to the field of engine technology, specifically relating to a V-type 14-cylinder high-pressure common rail engine. Background Technology

[0002] Since the Industrial Revolution, diesel engines have been widely used, improving agricultural and industrial production and playing a vital role in my country's modernization. With advancements in science and technology, diesel engines have gradually developed towards higher power and cost-effectiveness, resulting in improved performance, higher power-to-weight ratio, and higher reliability.

[0003] A V-type engine is a type of diesel engine that divides all cylinders into two groups and arranges the two groups of cylinders together at a certain angle (the angle γ between the center lines of the left and right rows of cylinders is less than 180°), so that the two groups of cylinders form a plane with an angle. When viewed from the side, the cylinders are V-shaped (the angle is usually 60°).

[0004] Although existing engines come in various cylinder configurations, such as 8, 10, 12, 16, and 20 cylinder engines, the above cylinder numbers cannot meet the demand due to specific power design requirements. For example, an engine with fewer cylinders cannot reach the required power range, so the number of cylinders must be increased to reach the required power range. However, there will be a large margin in power, resulting in a power range gap. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a V-type 14-cylinder high-pressure common rail engine, which fills the gap in the power range of existing engines and meets the power design requirements.

[0006] The present invention adopts the following technical solution:

[0007] A V14 high-pressure common rail engine includes a cylinder block, a fuel system, and fuel injectors.

[0008] The cylinder body has symmetrical cylinder holes on both sides, and the cylinder holes on each side are distributed along the length of the cylinder body, with 7 cylinder holes on each side;

[0009] The fuel system includes a high-pressure fuel pump connected to the fuel tank, and several common rails connected in series with the high-pressure fuel pump.

[0010] The fuel injector is installed in the cylinder head and connected to the fuel tank return end. By symmetrically setting 7 cylinder holes on each side of the cylinder block, the entire engine is in the form of 14 cylinders, filling the gap in the market for 14-cylinder engines, meeting the requirements of specific power design, and avoiding the situation of insufficient engine power or margin.

[0011] By incorporating low-pressure oil pumps, high-pressure oil pumps, and common rails, the fuel in the diesel engine is mixed and burned with air at high injection pressure, improving performance indicators, reducing specific mass, increasing power output per liter, and enhancing practicality. This makes the engine compact, powerful, and strong, while also being highly economical. It also mitigates the environmental pollution caused by exhaust gases from traditional engines due to their low fuel efficiency.

[0012] Furthermore, it also includes an intake and exhaust system, which includes symmetrically arranged turbochargers. Each turbocharger compressor end is connected to an air filter, and the other end of each turbocharger is connected to an air pipe. Each air pipe is connected to a distribution pipe that allows air to flow into the cylinder body.

[0013] Furthermore, the fuel system also includes a low-pressure fuel pump connected to the fuel tank.

[0014] Furthermore, a fuel filter is provided between the low-pressure oil pump and the high-pressure oil pump.

[0015] Furthermore, the distribution pipe is connected to a high-temperature flow channel, which is connected to an external radiator. The external radiator is connected to a low-temperature flow channel, which is connected to an intake pipe connected to the cylinder block. The low-temperature flow channel and the high-temperature flow channel allow pressurized air to enter the high-temperature flow channel, pass through the high-temperature flow channel and the external radiator for heat dissipation, and then the cooled air enters the cylinder block through the low-temperature flow channel and the intake pipe.

[0016] Furthermore, it also includes a cooling system, which comprises a water tank and a water pump:

[0017] One end of the water pump is connected to the water tank, and the other end of the water pump is connected to the oil cooler. The oil cooler is connected to a heat dissipation pipe, and the heat dissipation pipe is connected to a return water pipe that is connected to the water tank.

[0018] Furthermore, the heat dissipation pipe includes a water channel disposed within the cylinder body.

[0019] Furthermore, the upper end of the cylinder bore has a cylinder head, and the cylinder head is provided with water channels. A water pump circulates the water in the water tank to dissipate heat from the cylinder block and cylinder head.

[0020] Furthermore, it also includes a lubrication system, the lubrication system comprising:

[0021] Oil pan, located at the bottom of the cylinder block;

[0022] An oil pump is located in the oil pan and is connected to the engine lubrication oil passage. The oil pump draws oil and delivers it through the oil passage to each moving part for lubrication.

[0023] In addition, the oil cooling nozzle is installed on the engine's main oil passage, and an oil cooler and an oil filter are located between the oil pump and the oil nozzle. The oil cooler and oil filter can cool and filter the engine oil.

[0024] Furthermore, the oil cooling nozzle is used to cool the piston and lubricate the camshaft.

[0025] Compared with the prior art, this utility model has the following advantages:

[0026] This utility model fills the market gap for 14-cylinder engines by symmetrically setting 7 cylinder holes on each side of the cylinder block, meeting the requirements of specific power design and avoiding situations where the engine power is insufficient or has a margin.

[0027] By incorporating low-pressure oil pumps, high-pressure oil pumps, and common rails, the fuel in the diesel engine is mixed and burned with air at high injection pressure, improving performance indicators, reducing specific mass, increasing power output per liter, and enhancing practicality. This makes the engine compact, powerful, and strong, while also being highly economical. It also mitigates the environmental pollution caused by exhaust gases from traditional engines due to their low fuel efficiency. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the right-side structure of an embodiment of the present utility model;

[0030] Figure 3 This is a simplified diagram of the fuel system of this utility model;

[0031] The reference numerals in the accompanying drawings include:

[0032] Cylinder block 10, injector 11, cylinder head 12, fuel tank 20, common rail 21, fuel filter 22, oil-water separator 23, turbocharger 30, air filter 31, distributor pipe 32, exhaust pipe 33, intake manifold 34, intake pipe 35, water pump 40, oil cooler 41, oil pan 42, oil filter 43. Detailed Implementation

[0033] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual physical objects. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals in the drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" appear, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0035] like Figures 1-3 As shown, the present invention discloses a V-type 14-cylinder high-pressure common rail engine, including a cylinder block 10, a fuel system, a cooling system, an exhaust system, and an injector 11.

[0036] The cylinder body 10 has 7 cylinder holes symmetrically opened on both sides, and the cylinder holes on each side are distributed along the length of the cylinder body 10. The upper end of the cylinder hole has a cylinder head 12.

[0037] The fuel system includes a high-pressure fuel pump connected to the fuel tank 20, and several common rails 21 connected in series with the high-pressure fuel pump. The fuel system also includes a low-pressure fuel pump connected to the fuel tank 20, and a fuel filter 22 is installed between the low-pressure fuel pump and the high-pressure fuel pump.

[0038] Existing V-type engines have various cylinder configurations, including 8, 10, 12, 16, and 20 cylinders, but there are gaps in the power range. For example, a V12 engine cannot achieve a power output of 900kW. While a V16 engine can reach this power range, there is a significant power margin. Due to limitations in the manufacturing process and components of V16 engines, their cost is much higher than that of V12 engines, resulting in a very low cost-performance ratio.

[0039] The V14 engine can not only meet the power requirement of 900kW, but also has advantages in terms of cost and price compared to the V16 engine. Therefore, the development and design of the V14 engine can save costs while meeting the power requirements.

[0040] In this engine, the injector 11 is installed in the cylinder head 12 and connected to the return end of the fuel tank 20. By symmetrically setting 7 cylinder holes on each side of the cylinder block, the entire engine is in the form of 14 cylinders, filling the gap in the market for 14-cylinder engines, meeting the requirements of specific power design, and avoiding the situation of insufficient engine power or margin.

[0041] like Figure 3 As shown, specifically, the high-pressure fuel pump and the low-pressure fuel pump of the fuel system form a fuel pump assembly. Fuel enters the fuel filter assembly from the low-pressure fuel pump of the fuel pump assembly through the fuel-water separator 23. The filtered fuel enters the high-pressure fuel pump of the fuel pump assembly, and then enters four common rails 21 through the high-pressure fuel pump. The four common rails 21 are connected in series to maintain the same rail pressure. Each common rail 21 is connected to an injector 11, which is connected to the internal channel of the common rail 21. Two common rails 21 on the same side are equipped with three and four injectors 11, respectively. The return fuel from the 14 injectors 11 is collected with the return fuel from the fuel pump assembly and returns to the fuel tank 20.

[0042] By incorporating low-pressure oil pumps, high-pressure oil pumps, and a common rail 21, the fuel in the diesel engine is mixed with air and burned at high injection pressure, improving performance indicators, reducing specific mass, increasing power output per liter, and enhancing practicality. Its minimum fuel consumption rate is ≤192g / kw·h, the ratio of engine weight to engine power is 0.5 to 0.55, and the ratio of engine power to engine displacement, i.e., power output per liter, is 30KW / L to 35KW / L.

[0043] This diesel engine boasts high performance indicators, a compact body, moderate power output, a high power-to-weight ratio, high reliability, and excellent fuel economy. It also mitigates the environmental pollution caused by the exhaust gas emitted from the exhaust pipe 33, which is often associated with the low fuel efficiency of traditional engines.

[0044] The 14-cylinder diesel engine uses a high-pressure common rail fuel system. The injection pressure in this fuel system can be flexibly adjusted to determine the optimal injection pressure (120MPa~180MPa) for different operating conditions, thereby optimizing the overall performance of the diesel engine.

[0045] It can also independently and flexibly control the fuel injection timing. Combined with high injection pressure, it can simultaneously control NOx and particulate matter (PM) within a small range to meet emission requirements.

[0046] like Figure 2 As shown, the intake and exhaust system includes symmetrically arranged turbochargers 30. Each turbocharger 30 is connected to an air filter 31 at its compressor end, and each turbocharger 30 is connected to an air pipe at its other end. Each air pipe is connected to a distribution pipe 32 that allows air to flow into the cylinder block 10.

[0047] In addition, the distribution pipe 32 is connected to a high-temperature flow channel, which is connected to an external radiator. The external radiator is connected to a low-temperature flow channel, which is connected to an intake pipe 35 connected to the cylinder block 10. Pressurized air enters the high-temperature flow channel and is cooled by the external radiator. The cooled air then enters the cylinder block 10 through the low-temperature flow channel and the intake pipe 35.

[0048] Specifically, the intake and exhaust system includes two turbochargers 303, two sets of exhaust pipes 33, an intake pipe 35, a distribution pipe 32, and an intake manifold 34 for the cylinder head. The two sets of exhaust pipes 33 are connected to the left and right cylinder heads 12 respectively. Each exhaust pipe 33 is connected to a turbocharger 30. The compressor end of each turbocharger 30 is connected to a PU air filter 31. The pressurized air is collected through the left and right intake pipes 35 and enters the distribution pipe 32. The distribution pipe 32 includes two flow channels, one for low-temperature gas and one for high-temperature gas. The pressurized air enters the high-temperature gas flow channel and then enters the external radiator through the distribution pipe 32. The air cooled by the external radiator enters the low-temperature flow channel of the distribution pipe 32 and then enters the intake manifold 34 of the left and right cylinder heads respectively through the low-temperature flow channel. The intake manifold 34 is installed on the left and right cylinder heads respectively. The cooled air enters the cylinder block 10 of each cylinder through the intake manifold 34.

[0049] The engine's cooling system includes at least a water tank and a water pump 40.

[0050] One end of the water pump 40 is connected to the water tank, and the other end of the water pump 40 is connected to the oil cooler 41. The oil cooler 41 is connected to a heat dissipation pipe, and the heat dissipation pipe is connected to a return water pipe connected to the water tank.

[0051] The cooling pipe includes water channels installed inside the cylinder block 10 and on the cylinder head 12. The water in the water tank is circulated by the water pump 40, thereby cooling the cylinder block 10 and the cylinder head 12.

[0052] The diesel engine cooling system is an independent water circulation system used for the oil cooler 41, cylinder block, and cylinder head. Cooling water first enters the oil cooler 41 through the water pump 40, then enters the double-layer water passage of the cylinder block and the cylinder head water passage, and finally enters the return water pipe. In addition, a thermostat is installed between the return water pipe and the radiator water pipe, and the thermostat is installed on the water pump 40.

[0053] The lubrication system in this engine includes an oil pan 42 located at the bottom of the cylinder block 10.

[0054] An oil pump is installed inside the bottom of the cylinder block 10. The oil pump is connected to the engine lubrication oil passage. The oil pump draws oil and enters each movement through the oil passage for lubrication.

[0055] In addition, the oil cooling nozzle is installed on the engine's main oil passage, and an oil cooler 41 and an oil filter 43 are provided between the oil pump and the oil cooling nozzle. The oil cooler 41 and the oil filter 43 can cool and filter the engine oil.

[0056] Specifically, the oil cooling nozzles cool and lubricate the pistons and camshafts.

Claims

1. A V-type 14-cylinder high-pressure common rail engine, characterized in that, include: Cylinder block; Cylinder bores are symmetrically opened on both sides of the cylinder block. The cylinder bores on each side are distributed along the length of the cylinder block, and there are 7 cylinder bores on each side. The entire engine is in the form of 14 cylinders to avoid insufficient engine power or excess power. The fuel system includes a high-pressure fuel pump connected to the fuel tank, and several common rails connected in series with the high-pressure fuel pump. The fuel injector is connected to the return end of the fuel tank. It also includes an intake and exhaust system, which includes symmetrically arranged turbochargers. Each turbocharger compressor end is connected to an air filter, and the other end of each turbocharger is connected to an air pipe. Each air pipe is connected to a distribution pipe that can supply air to the cylinder body. The distribution pipe is connected to a high-temperature flow channel, which is connected to an external radiator. The external radiator is connected to a low-temperature flow channel, which is connected to an intake pipe that is connected to the cylinder block. The pressurized air enters the high-temperature flow channel, passes through the distribution pipe, enters the external radiator, and after being cooled by the external radiator, enters the low-temperature flow channel of the distribution pipe. The cooled air then enters the cylinder block through the low-temperature flow channel.

2. The V-type 14-cylinder high-pressure common rail engine as described in claim 1, characterized in that: The fuel system also includes a low-pressure fuel pump connected to the fuel tank.

3. A V-type 14-cylinder high-pressure common rail engine as described in claim 2, characterized in that: A fuel filter is installed between the low-pressure oil pump and the high-pressure oil pump.

4. A V-type 14-cylinder high-pressure common rail engine as described in any one of claims 1 to 3, characterized in that: It also includes a cooling system, which comprises: Water tank; A water pump is connected to a water tank. The water pump is connected to an oil cooler, which is connected to a heat dissipation pipe. The heat dissipation pipe is connected to a return water pipe that is connected to the water tank.

5. A V-type 14-cylinder high-pressure common rail engine as described in claim 4, characterized in that: The cooling pipes include water channels located inside the cylinder body.

6. A V-type 14-cylinder high-pressure common rail engine as described in claim 5, characterized in that: The cylinder bore has a cylinder head at its upper end, and water channels are also provided on the cylinder head.

7. A V-type 14-cylinder high-pressure common rail engine as described in claim 1, 2, 3, 5 or 6, characterized in that: It also includes a lubrication system, which comprises: Oil pan, located at the bottom of the cylinder block; An oil pump is located in the oil pan and is connected to the engine lubrication oil passage. An oil cooling nozzle is installed on the main oil passage of the engine. An oil cooler and an oil filter are provided between the oil pump and the oil nozzle.

8. A V-type 14-cylinder high-pressure common rail engine as described in claim 7, characterized in that: The oil cooling nozzles cool and lubricate the piston and camshaft.

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