CN113586233A - V-shaped high-pressure common rail engine - Google Patents
V-shaped high-pressure common rail engine Download PDFInfo
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- CN113586233A CN113586233A CN202111078366.7A CN202111078366A CN113586233A CN 113586233 A CN113586233 A CN 113586233A CN 202111078366 A CN202111078366 A CN 202111078366A CN 113586233 A CN113586233 A CN 113586233A
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- common rail
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
- F02B75/221—Multi-cylinder engines with cylinders in V, fan, or star arrangement with cylinder banks in narrow V-arrangement, having a single cylinder head
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of engines, and particularly discloses a V-shaped high-pressure common rail engine which comprises a V-shaped cylinder body, cylinder holes symmetrically arranged at two sides of the cylinder body, and cylinder covers arranged at the cylinder holes, and further comprises a fuel system for supporting the engine to operate, an air intake and exhaust system, a cooling system, a lubricating system and a vibration damping system, wherein the fuel system comprises a low-pressure oil pump communicated with a fuel tank, the low-pressure oil pump is communicated with a fuel filter, the fuel filter is communicated with a high-pressure oil pump, the high-pressure oil pump is communicated with a plurality of common rail pipes which are mutually connected in series, the common rail pipes are communicated with a plurality of oil injectors, the air intake and exhaust system comprises superchargers symmetrically arranged, air compressors are communicated with an air filter, the other ends of the superchargers are communicated with air pipes, and the air pipes are communicated with distribution pipes capable of ventilating the cylinder body Low specific mass, high power per liter and high cost performance of the product.
Description
Technical Field
The application relates to the technical field of engines, and particularly discloses a V-shaped high-pressure common rail engine.
Background
Since the industrial revolution, the diesel engine is generally applied, the agricultural and industrial production level is improved, and the diesel engine plays an important role in the national modernization construction, and the principle of the diesel engine can be summarized as follows: air is sucked in, fuel oil is sprayed into the cylinder by the oil sprayer to form combustible mixed gas and is combusted, the air pressure in the cylinder rises, the high-pressure gas pushes the piston to move downwards and drives the crankshaft to rotate to do work, the crankshaft outputs power through a flywheel and the like, and waste gas is exhausted into the atmosphere through the exhaust pipe. With the improvement of scientific technology, the diesel engine gradually develops towards high power and high cost performance, and the diesel engine is promoted to have high strengthening index, low specific mass and high power-up.
The V-shaped engine is characterized in that all cylinders are divided into two groups, the two groups of cylinders are arranged together at a certain included angle (the included angle gamma of the central lines of the left and right rows of cylinders is less than 180 degrees), so that the two groups of cylinders form a plane with an included angle, and the cylinders are in a V shape (the common included angle is 60 degrees) when viewed from the side surface, so that the V-shaped engine is called.
However, in a conventional fuel system of an engine, the fuel utilization rate is low, so that the exhaust gas discharged from an exhaust pipe pollutes the environment greatly, and therefore, the inventor provides a V-type high-pressure common rail engine in order to solve the problem.
Disclosure of Invention
The invention aims to provide an engine which has high strengthening index, low specific mass, high power per liter and high cost performance.
In order to achieve the aim, the basic scheme of the invention provides a V-shaped high-pressure common rail engine which comprises a V-shaped cylinder body, cylinder holes symmetrically arranged at two sides of the cylinder body, a fuel system for supporting the engine to run, an air intake and exhaust system, a cooling system, a lubricating system and a vibration damping system, wherein the cylinder holes are provided with cylinder covers;
the fuel system comprises a low-pressure oil pump communicated with the fuel tank, the low-pressure oil pump is communicated with a fuel filter, the fuel filter is communicated with a high-pressure oil pump, the high-pressure oil pump is communicated with a plurality of common rail pipes which are connected in series, the common rail pipes are communicated with a plurality of fuel injectors, and the fuel injectors are communicated with oil return pipes communicated with the fuel tank;
the air inlet and exhaust system comprises superchargers which are symmetrically arranged, air compressor ends of the superchargers are communicated with air filters, the other ends of the superchargers are communicated with air pipes, and the air pipes are communicated with distribution pipes which can ventilate the cylinder body.
The principle and effect of this basic scheme lie in:
1. the invention adopts the low-pressure oil pump to convey the fuel oil in the fuel tank to the fuel oil filter for filtering, thereby removing impurities and improving the purity of the fuel oil, thereby reducing the discharge amount of waste gas.
2. The invention adopts the high-pressure oil pump, the common rail pipe and the oil injector which are connected in series to inject the filtered fuel oil into the cylinder body of the cylinder to be mixed and combusted with air, and can simultaneously control NOx and Particles (PM) within a smaller numerical value by matching with high injection pressure so as to meet the emission requirement, namely reduce the emission amount of waste gas.
3. According to the invention, through the supercharger, the air device, the air pipe, the distribution pipe and the like, air is filtered and pressurized to enter the cylinder body of the cylinder to be combusted with fuel oil, so that the fuel oil is combusted more fully.
4. Compared with the prior art, the diesel engine has the advantages that the low-pressure oil pump, the high-pressure oil pump, the common rail pipe and other structures are arranged, so that fuel oil in the diesel engine is filtered to be mixed with air and combusted at high injection pressure, the strengthening index is improved, the specific mass is reduced, the power per liter is improved, and the practicability is improved.
Further, the distribution pipe is communicated with a high-temperature pipeline, the high-temperature pipeline is communicated with an external radiator, the external radiator is communicated with a low-temperature pipeline, and the low-temperature pipeline is communicated with an air inlet pipe communicated with the cylinder body of the air cylinder. Through setting up low temperature pipeline and high temperature pipeline, make through the air admission high temperature pipeline of pressurization, dispel the heat through external radiator through high temperature pipeline, the gas after the heat dissipation gets into cylinder body through low temperature pipeline and intake pipe.
Further, cooling system includes the water tank and the water pump with the water tank intercommunication, and the water pump intercommunication has the oil cooler, and the oil cooler intercommunication has can carry out radiating heat dissipation pipeline to cylinder block and cylinder cap, and heat dissipation pipeline intercommunication has the return water pipeline with the water tank intercommunication. The water in the water tank is circulated through the water pump, and the oil cooler is used for cooling, so that parts such as the cylinder body and the cylinder cover are cooled.
Furthermore, a thermostat is arranged on the water return pipeline. The temperature of the water return pipeline is automatically adjusted through the thermostat.
Further, the lubricating system comprises an oil pan arranged at the bottom of the cylinder body of the cylinder and an oil pump communicated with the oil pan, the oil pump is communicated with an engine lubricating oil channel, and an oil cooling nozzle is installed on the engine main oil channel. The oil pump pumps the oil and sprays the oil through the oil nozzle, thereby cooling the piston and lubricating the camshaft.
Further, an oil cooler and an oil filter are arranged between the oil pump and the oil nozzle. The oil cooler and the oil filter can cool and filter the oil.
Further, the vibration reduction mechanism comprises vibration dampers symmetrically arranged on two sides of the crankshaft pulley. The shock absorbers are symmetrically arranged on two sides of the crankshaft belt pulley, so that the problem of torsional vibration caused by slender crankshafts can be effectively solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an isometric view of a V-type high pressure common rail engine according to an embodiment of the present disclosure;
FIG. 2 shows a side view of a V-type high pressure common rail engine according to an embodiment of the present application;
FIG. 3 shows a schematic diagram of a fuel system of a V-type high-pressure common rail engine according to an embodiment of the application.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the engine oil cooling device comprises a PU air filter 1, an air inlet bent pipe 2, a supercharger 3, an exhaust bent pipe 4, an oil injector 5, an engine oil cooler 6, an engine oil filter 7, a first air inlet manifold 8, a first air inlet straight pipe 9, an oil pan 10, a water pump 11, a first shock absorber 12, a second shock absorber 13, an air cylinder body 14, an air cylinder cover 15, a distribution pipe 16, a fuel oil filter 17, a common rail pipe 18, a second air inlet straight pipe 19, a second air inlet manifold 20, a high-pressure oil pump 21 and a charger 22.
A V-type high-pressure common rail engine comprises the following components in an embodiment shown in figures 1 and 2: the cylinder number of the multi-cylinder engine provided by the invention is 8, 10, 12, 16 and 20 cylinders, the example takes 20 cylinders as an example for description, the multi-cylinder engine further comprises a fuel system for supporting the engine to run, an air intake and exhaust system, a cooling system, a lubricating system and a vibration damping system which play an auxiliary role, and the side wall of the cylinder block 14 is also provided with a charger 22.
The embodiment is shown in fig. 3, the fuel system comprises a low-pressure oil pump communicated with a fuel tank, the low-pressure oil pump is communicated with a fuel filter 17, the fuel filter 17 is communicated with a high-pressure oil pump 21, the high-pressure oil pump 21 is communicated with four common rail pipes 18 which are connected in series, each common rail pipe 18 is communicated with five fuel injectors 5, each fuel injector 5 is communicated with a return pipe communicated with the fuel tank, and the return pipes are also communicated with the high-pressure oil pump 21.
The air intake and exhaust system comprises superchargers 3 symmetrically arranged front and back, the air compressor ends of the two superchargers 3 are all communicated with a PU air filter 1, the other ends of the two superchargers 3 are all communicated with an air intake elbow 2, the two air intake elbows 2 are communicated with two air pipes, the air pipes are all communicated with a distribution pipe 16, the two air pipes are respectively a first air intake straight pipe 9 and a second air intake straight pipe 19, the distribution pipe 16 is communicated with a high-temperature pipeline, the high-temperature pipeline is communicated with an external radiator, the external radiator is communicated with a low-temperature pipeline, the low-temperature pipeline is communicated with an air intake pipe communicated with an air cylinder body 14, the air intake pipe comprises a first air intake manifold 8 and a second air intake manifold 20, the air cylinder body 14 is also communicated with an exhaust elbow 4, and the exhaust elbow 4 is communicated with an exhaust pipe.
The cooling system comprises a water tank and a water pump 11 communicated with the water tank, the water pump 11 is communicated with an engine oil cooler 6, the engine oil cooler 6 is communicated with a heat dissipation pipeline capable of dissipating heat of the cylinder body 14 and the cylinder cover 15, the heat dissipation pipeline is communicated with a water return pipeline communicated with the water tank, and a thermostat is arranged on the water return pipeline.
The lubricating system comprises an oil pan 10 arranged at the bottom of the cylinder body 14 and an oil pump communicated with the oil pan 10, the oil pump is communicated with an engine lubricating oil channel, an oil cooling nozzle is arranged on an engine main oil channel and used for cooling a piston and lubricating a camshaft, and an oil filter 7 is arranged between the oil pump and the oil cooling nozzle through an oil cooler 6.
Damping mechanism locates the first bumper shock absorber 12 and the second bumper shock absorber 13 of crankshaft pulley both sides including the symmetry, and crankshaft pulley both sides are located to first bumper shock absorber 12 and second bumper shock absorber 13 symmetry, can effectively solve the slender torsional vibration problem that brings of bent axle.
In the implementation process of the invention, fuel oil is conveyed to a fuel oil filter 17 in a fuel tank through a low-pressure oil pump for filtering, impurities are removed, the purity of the fuel oil is improved, the filtered fuel oil enters a high-pressure oil pump 21, the fuel oil enters 4 common rail pipes 18 through the high-pressure oil pump 21, the 4 common rail pipes 18 are mutually connected in series to keep the same rail pressure, each common rail pipe 18 is respectively connected with 5 oil injectors 5, the return oil of 20 oil injectors 5 and the return oil of a high-pressure oil pump 21 assembly are collected together through an oil return pipe and return to the fuel tank, a high-pressure common rail fuel oil structure is adopted, the oil injection pressure in the fuel oil system is flexibly adjustable, the required optimal injection pressure (120 MPa-180 MPa) can be determined for different working conditions, and the comprehensive performance of a diesel engine is optimized; the fuel injection timing can be independently and flexibly controlled, and the NOx and the Particulate Matter (PM) can be simultaneously controlled within a small value by matching with high injection pressure so as to meet the emission requirement.
PU air filter 1 filters the air, and the air after the filtration pressurizes through booster 3, gets into distribution pipe 16 through first air inlet straight tube 9 and second air inlet straight tube 19 respectively after the pressurization to dispel the heat through external radiator through high temperature tube, the gas after the heat dissipation passes through low temperature tube, at last gets into in cylinder body 14 through first air intake manifold 8 and second air intake manifold 20 etc. and burns with the fuel mixture.
In the invention, the anisotropic optimization parameters of the engine are embodied as follows: (1) strengthening indexes are as follows: the product of the average effective pressure and the average piston velocity is 200-276; (2) the mass ratio is as follows: the ratio of the weight of the engine to the power of the engine is 1.98-2.28; (3) power per liter: the ratio of the engine power to the engine displacement is 31-39.
Compared with the prior art, the invention has the advantages that through the arrangement of the structures of the low-pressure oil pump, the high-pressure oil pump 21, the common rail pipe 18 and the like, fuel oil in the diesel engine is filtered to be mixed and combusted with air at high injection pressure, and the complete oil return pipe is arranged, so that the combustion degree and the utilization rate of the fuel oil are improved, the strengthening index is improved, the specific quality is reduced, the power per liter is improved, and the practicability is improved.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a V type high pressure common rail engine, includes that the cylinder block of V type and symmetry establish the cylinder hole in cylinder block both sides, and cylinder hole department all is equipped with cylinder head, its characterized in that: the engine also comprises a fuel system for supporting the engine to run, an air intake and exhaust system, a cooling system, a lubricating system and a vibration damping system which play an auxiliary role;
the fuel system comprises a low-pressure oil pump communicated with the fuel tank, the low-pressure oil pump is communicated with a fuel filter, the fuel filter is communicated with a high-pressure oil pump, the high-pressure oil pump is communicated with a plurality of common rail pipes which are connected in series, the common rail pipes are communicated with a plurality of fuel injectors, and the fuel injectors are communicated with oil return pipes communicated with the fuel tank;
the air inlet and exhaust system comprises superchargers which are symmetrically arranged, air compressor ends of the superchargers are communicated with air filters, the other ends of the superchargers are communicated with air pipes, and the air pipes are communicated with distribution pipes which can ventilate the cylinder body.
2. The V-shaped high-pressure common rail engine according to claim 1, wherein the distribution pipe is communicated with a high-temperature pipeline, the high-temperature pipeline is communicated with an external radiator, the external radiator is communicated with a low-temperature pipeline, and the low-temperature pipeline is communicated with an air inlet pipe communicated with the cylinder body.
3. The V-shaped high-pressure common rail engine according to claim 1, wherein the cooling system comprises a water tank and a water pump communicated with the water tank, the water pump is communicated with an oil cooler, the oil cooler is communicated with a heat dissipation pipeline capable of dissipating heat of the cylinder block and the cylinder cover, and the heat dissipation pipeline is communicated with a water return pipeline communicated with the water tank.
4. The V-shaped high-pressure common rail engine according to claim 3, wherein a thermostat is arranged on the water return pipeline.
5. The V-shaped high-pressure common rail engine according to claim 1, wherein the lubricating system comprises an oil pan arranged at the bottom of the cylinder block and an oil pump communicated with the oil pan, the oil pump is communicated with an engine lubricating oil channel, and an oil cooling nozzle is arranged on the engine main oil channel.
6. The V-type high-pressure common rail engine according to claim 5, wherein an oil cooler and an oil filter are arranged between the oil pump and the oil nozzle.
7. The V-type high pressure common rail engine according to claim 1, wherein the vibration damping mechanism comprises vibration dampers symmetrically arranged on both sides of the crank pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078366.7A CN113586233A (en) | 2021-09-15 | 2021-09-15 | V-shaped high-pressure common rail engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078366.7A CN113586233A (en) | 2021-09-15 | 2021-09-15 | V-shaped high-pressure common rail engine |
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| Publication Number | Publication Date |
|---|---|
| CN113586233A true CN113586233A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111078366.7A Pending CN113586233A (en) | 2021-09-15 | 2021-09-15 | V-shaped high-pressure common rail engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991953A (en) * | 2022-05-20 | 2022-09-02 | 中国第一汽车股份有限公司 | V-shaped 6-cylinder engine with 95-degree included angle |
-
2021
- 2021-09-15 CN CN202111078366.7A patent/CN113586233A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991953A (en) * | 2022-05-20 | 2022-09-02 | 中国第一汽车股份有限公司 | V-shaped 6-cylinder engine with 95-degree included angle |
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