CN220909868U - Single cylinder diesel engine test bed fuel system - Google Patents
Single cylinder diesel engine test bed fuel system Download PDFInfo
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- CN220909868U CN220909868U CN202322447356.7U CN202322447356U CN220909868U CN 220909868 U CN220909868 U CN 220909868U CN 202322447356 U CN202322447356 U CN 202322447356U CN 220909868 U CN220909868 U CN 220909868U
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- 239000000446 fuel Substances 0.000 title claims abstract description 98
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 239000002828 fuel tank Substances 0.000 claims abstract description 30
- 239000003921 oil Substances 0.000 claims description 65
- 239000000295 fuel oil Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 9
- 238000005457 optimization Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model discloses a fuel system of a single-cylinder diesel engine test bed, which comprises a single-cylinder diesel engine and a fuel tank, wherein the single-cylinder diesel engine is provided with an oil inlet port and an oil return port; the parts which are sequentially connected in series from the fuel tank to the fuel inlet pipe of the fuel inlet interface are at least provided with a fuel pump, a pressure regulator, a temperature regulator, a first pressure sensor and a first temperature sensor; the first pressure sensor is electrically connected with the pressure regulator; the first temperature sensor is electrically connected with the temperature regulator; the pressure regulator is provided with an overflow pipe, and the tail end of the overflow pipe is communicated with the fuel tank. According to the utility model, the functions of the fuel supply system are enriched by arranging the functional components, the adaptability of different working conditions of the single-cylinder diesel engine is improved, and the credibility of the single-cylinder simulation test is ensured.
Description
Technical Field
The utility model belongs to the technical field of engines, and particularly relates to a fuel system of a single-cylinder diesel engine test bed.
Background
The single-cylinder simulation test is an extremely economical and effective test means. The main task of the single-cylinder simulation test is to study the basic theoretical problem in the cylinder of the diesel engine and to pre-research and test various new technical measures for developing some problems possibly occurring in the next-generation high-index diesel engine so as to find out the technical way for realizing the high index of the diesel engine under the condition that the design of the multi-cylinder engine is not fully mastered. The problem is that single cylinder simulation tests are different from actual multi-cylinder diesel engine working conditions, such as that under acceleration conditions, the multi-cylinder diesel engine is faster in temperature rise and the fuel supply pressure is also faster in rate of decline. The fuel supply system of the traditional direct-supply single-cylinder diesel engine is not full in function, and the pressure and temperature changes of the fuel cannot be timely adjusted, so that the data of the single-cylinder simulation test are distorted. Therefore, the fuel system is used as an essential link of the single-cylinder simulation test, and the fuel system is required to be optimally designed so as to ensure the credibility of the single-cylinder simulation test.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a single-cylinder diesel engine test bed fuel system. The purpose is to overcome the function deficiency of traditional direct oil supply, design the fuel oil supply system that has temperature and pressure regulation function, enrich the fuel oil system function to satisfy single cylinder diesel engine test bench needs, guarantee single cylinder analogue test's credibility.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a single cylinder diesel engine test bed fuel system; the test bed comprises a single-cylinder diesel engine and a fuel tank which are arranged on the test bed, wherein the single-cylinder diesel engine is provided with an oil inlet port and an oil return port; two ends of the oil inlet pipe are respectively communicated with the oil inlet port and the fuel tank, and two ends of the oil return pipe are communicated with the oil return port and the fuel tank to form a fuel circulation pipeline; the parts which are sequentially connected in series from the fuel tank to the fuel inlet pipe of the fuel inlet interface are at least provided with a fuel pump, a pressure regulator, a temperature regulator, a first pressure sensor and a first temperature sensor; the first pressure sensor is electrically connected with the pressure regulator and is used for controlling the fuel pressure output to the single-cylinder diesel engine through the pressure regulator according to the pressure value acquired by the first pressure sensor; the first temperature sensor is electrically connected with the temperature regulator and is used for controlling the temperature of fuel oil output to the single-cylinder diesel engine through the temperature regulator according to the temperature value acquired by the first temperature sensor; the pressure regulator is provided with an overflow pipe, and the tail end of the overflow pipe is communicated with the fuel tank.
As further optimization, an oil consumption measuring instrument is connected in series between the temperature regulator and the oil inlet interface; and the inlet and outlet ends of the oil consumption measuring instrument are connected with a bypass pipe in parallel, and the bypass pipe and the inlet and outlet ends of the oil consumption measuring instrument are respectively provided with a first stop valve.
As further optimization, a second stop valve and a strainer are connected in series on the fuel inlet pipe from the fuel tank to the fuel pump; and a one-way valve and a fine filter are sequentially connected in series on the oil inlet pipe from the fuel pump to the pressure regulator.
As further optimization, the oil inlet port and the oil return port are respectively communicated with the oil inlet pipe and the oil return pipe through the bent pipe and the rubber hose.
As a further optimization, a second pressure sensor, a second temperature sensor and a third stop valve are arranged on the oil return pipe.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The fuel temperature regulator and the pressure regulator can regulate the pressure and the temperature of fuel delivered to the single-cylinder diesel engine, the fuel consumption measuring instrument and other elements, and the functions are rich.
(2) The first pressure sensor and the first temperature sensor can automatically detect, automatically feed back and control output, and the degree of automation is improved.
(3) The fuel consumption measuring instrument can be flexibly selected, and reserves the fuel consumption measuring function.
In a word, through setting up a plurality of functional units, richened the function of fuel supply system, improved single cylinder diesel engine different operating mode's adaptability, guaranteed single cylinder analogue test's credibility.
Drawings
Fig. 1 is a schematic system diagram of embodiment 1 of the present utility model.
In the figure: 1 is a fuel tank; 2 is a second stop valve; 3 is a coarse filter; 4 is an oil inlet pipe; 5 is a fuel pump; 6 is a one-way valve; 7 is a fine filter; 8 is a pressure regulator; 9 is a temperature regulator; 10 is a first shut-off valve; 11 is an oil consumption measuring instrument; 13 is a temperature sensor; 14 is a pressure sensor; 15 is a rubber hose; 16 is an elbow; 17 is an oil inlet interface; 18 is a single cylinder diesel engine; 19 is an oil return interface; 21 is an oil return pipe; and 22 is a third stop valve.
Detailed Description
The present utility model now will be described more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, to illustrate only a part, and not all of the preferred embodiments of the utility model. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
Example 1: please refer to fig. 1;
The single-cylinder diesel engine test bed fuel system is applied to the fuel supply operation of a single-cylinder diesel engine 18 test and comprises a single-cylinder diesel engine 18 and a fuel tank 1 on a test bed, wherein the single-cylinder diesel engine 18 is provided with an oil inlet port 17 and an oil return port 19; two ends of the oil inlet pipe 4 are respectively communicated with the oil inlet port 17 and the fuel tank 1, and two ends of the oil return pipe 21 are communicated with the oil return port 19 and the fuel tank 1 to form a fuel oil circulation pipeline; the components connected in series in sequence from the fuel tank 1 to the fuel inlet pipe 4 of the fuel inlet port 17 are at least a fuel pump 5, a pressure regulator 8, a temperature regulator 9, a first pressure sensor 14 and a first temperature sensor 13; the first pressure sensor 14 is electrically connected with the pressure regulator 8, and is used for controlling the fuel pressure output to the single-cylinder diesel 18 through the pressure regulator 8 according to the pressure value obtained by the first pressure sensor 14; the first temperature sensor 13 is electrically connected with the temperature regulator 9, and is configured to control the temperature of the fuel oil output to the single-cylinder diesel 18 through the temperature regulator 9 according to the temperature value obtained by the first temperature sensor 13; the pressure regulator 8 is provided with an overflow pipe, and the tail end of the overflow pipe is communicated with the fuel tank 1.
Therefore, the temperature and the pressure of the fuel oil output to the single-cylinder diesel 18 can be flexibly adjusted through the fuel oil of the pressure regulator 8 and the temperature regulator 9, the actual working condition can be simulated, and the credibility of the single-cylinder simulation test is ensured.
For further enriching functions, a fuel consumption measuring instrument 11 is connected in series between the temperature regulator 9 and the fuel inlet interface 17; the inlet end and the outlet end of the oil consumption measuring instrument 11 are communicated with a bypass pipe, and the bypass pipe and the inlet end and the outlet end of the oil consumption measuring instrument 11 are respectively provided with a first stop valve 10. The fuel quantity output to the single-cylinder diesel 18 can be measured by the fuel consumption meter 11. Of course, the test bench is also provided with a fuel consumption measuring device, and the measured values of the fuel consumption measuring instrument 11 and the fuel consumption measuring device can be compared as required during specific use, so that the fuel consumption data is more reliable. According to the test requirement, the bypass pipe and the stop valve can flexibly select whether to short the oil consumption measuring instrument 11, and after the oil consumption measuring instrument 11 is short-circuited, the flow resistance is reduced, so that the oil pressure output is more accurate.
In order to ensure the cleanliness of the fuel, a second stop valve 2 and a strainer 3 are connected in series in sequence on an oil inlet pipe 4 from the fuel tank 1 to the fuel pump 5; the fuel pump 5 is connected with the fuel inlet pipe 4 of the pressure regulator 8 in series with a check valve 6 and a fine filter 7. Wherein the second stop valve 2 is arranged for easy maintenance.
In order to overcome the vibration influence of the single-cylinder diesel, the oil inlet port 17 and the oil return port 19 are respectively communicated with the oil inlet pipe 4 and the oil return pipe 21 through the bent pipe 16 and the rubber hose 15.
For sensing the return oil data, a second pressure sensor, a second temperature sensor and a third stop valve 22 are provided on the return oil pipe 21. The third stop valve 22 is provided for easy maintenance.
In use, the fuel tank 1 is a large cylinder for storing fuel. A drain valve is arranged at the lowest part of the bottom of the fuel tank 1 to remove water and dirt deposited at the bottom. The outlet of the fuel tank 1 must be 100-150mm higher than the bottom surface of the fuel tank, so as to prevent impurities deposited on the bottom surface from entering the single cylinder diesel 18 of the test bed. The fuel outlet of the fuel tank 1 is provided with a second stop valve 2, which is convenient for eliminating the fault of the fuel system when the fault of the fuel system occurs. The fuel in the fuel tank 1 passes through the second shut-off valve 2 and enters the strainer 3. In order to ensure the quality of the fuel feed and to prolong the service life of the fuel fine filter 7, a strainer 3 is arranged between the fuel tank 1 and the single cylinder diesel 18 of the test stand. The fuel oil pumped by the fuel pump 5 passes through the one-way valve 6 and enters the fine filter 7 for secondary filtration. The check valve 6 functions to prevent the reverse flow of the fuel. The precision of the fine filter 7 is high enough to ensure the cleanliness of the fuel in the single cylinder diesel 18 entering the test bed. Since the single cylinder diesel 18 of the test stand is subjected to a single cylinder simulation test, it is necessary to ensure that the temperature and pressure of the fuel entering the single cylinder diesel 18 of the test stand are consistent with the temperature and pressure of the fuel of the multi-cylinder diesel. A pressure regulator 8 and a temperature regulator 9 are installed after the fine filter 7 for regulating the temperature and pressure of the fuel. The pressure regulator 8 controls the magnitude of the fuel pressure by reducing the flow interface and the principles of relief. The temperature regulator 9 heats and cools the fuel through external circulation of high-temperature water according to the feedback result of the fuel temperature.
The adjusted fuel oil enters the fuel consumption measuring instrument 11 for measurement. The front and the back of the fuel consumption measuring instrument 11 are respectively connected with a first stop valve 10 in series, and a bypass pipeline of the fuel consumption measuring instrument 11 is provided with the first stop valve 10 which is connected with the fuel consumption measuring instrument 11 in parallel. The three first shut-off valves 10 are normally open when flat. When the single cylinder diesel 18 of the test bed is required to be tested, the two first stop valves 10 connected in series are opened, and the first stop valves 10 connected in parallel are closed. When the single cylinder diesel 18 of the test bed is not required to be tested, the two first stop valves 10 connected in series are closed, and the first stop valves 10 connected in parallel are opened. The first pressure sensor 14 and the first temperature sensor 13 are arranged on the fuel inlet pipeline 4 of the single-cylinder diesel 18 of the test bed and are used for monitoring the temperature and the pressure of the fuel fed back into the single-cylinder diesel 18 of the test bed, and the temperature of the fuel is ensured to reach the fuel temperature and the pressure required by the test through the fuel temperature regulator 9 and the pressure regulator 8. And a second pressure sensor and a second temperature sensor are arranged on the fuel return pipe 21 of the single-cylinder diesel 18 of the test bed and are used for monitoring the temperature and the pressure of the fuel in the fuel return pipe 21 of the single-cylinder diesel 18 of the test bed. Because the single-cylinder diesel 18 of the test bed vibrates greatly during operation, a section of high-temperature-resistant rubber hose 15 is arranged at the oil inlet and return interface 19 of the single-cylinder diesel 18 of the test bed and is used for reducing the vibration of the single-cylinder diesel 18 of the test bed on the oil inlet and return pipe 21. The rubber hose 15 is connected to the elbow 16, and the other end of the elbow 16 is fixed at an oil inlet port 17 of a single cylinder diesel 18 of the test bed. The oil return pipe 21 of the single cylinder diesel 18 of the test bed is also connected in a vibration damping way by adopting a rubber hose 15, an elbow 16 and an oil return joint 19. The fuel pipe is divided into an oil inlet pipe 4 and an oil return pipe 21, and the oil inlet pipe and the oil return pipe and components form the whole fuel pipe together. The fuel is returned to the fuel tank 1 via a third shut-off valve 22, the function of the third shut-off valve 22 being to facilitate the removal of fuel system faults.
Through above embodiment, compare prior art's advantage lies in:
(1) The fuel temperature regulator 9 and the pressure regulator 8 can regulate the pressure and the temperature of the fuel delivered to the single-cylinder diesel 18, the fuel consumption measuring instrument 11 and other elements, and the functions are rich.
(2) The first pressure sensor 14 and the first temperature sensor 13 can automatically detect, automatically feed back and control output, and the degree of automation is improved.
(3) The fuel consumption measuring instrument 11 which can be flexibly selected reserves the fuel consumption measuring function.
In a word, through setting up a plurality of functional units, richened the function of fuel supply system, improved single cylinder diesel 18 different operating modes's adaptability, guaranteed single cylinder analogue test's credibility.
The utility model has not been described in detail in the prior art; it should be understood by those skilled in the art that any combination of the features of the foregoing embodiments may be adopted, and that all possible combinations of the features of the foregoing embodiments are not described for brevity of description, however, such combinations are not to be considered as a contradiction between the features.
Claims (5)
1. The single-cylinder diesel engine test bed fuel system comprises a single-cylinder diesel engine (18) and a fuel tank (1) on a test bed, wherein the single-cylinder diesel engine (18) is provided with an oil inlet interface (17) and an oil return interface (19); two ends of an oil inlet pipe (4) are respectively communicated with the oil inlet port (17) and the fuel tank (1), and two ends of an oil return pipe (21) are communicated with the oil return port (19) and the fuel tank (1) to form a fuel oil circulation pipeline; the method is characterized in that: the components connected in series in sequence from the fuel tank (1) to the fuel inlet pipe (4) of the fuel inlet interface (17) are at least a fuel pump (5), a pressure regulator (8), a temperature regulator (9), a first pressure sensor (14) and a first temperature sensor (13);
The first pressure sensor (14) is electrically connected with the pressure regulator (8) and is used for controlling the fuel pressure output to the single-cylinder diesel engine (18) through the pressure regulator (8) according to the pressure value acquired by the first pressure sensor (14);
The first temperature sensor (13) is electrically connected with the temperature regulator (9) and is used for controlling the temperature of fuel oil output to the single-cylinder diesel engine (18) through the temperature regulator (9) according to the temperature value acquired by the first temperature sensor (13);
The pressure regulator (8) is provided with an overflow pipe, and the tail end of the overflow pipe is communicated with the fuel tank (1).
2. The single cylinder diesel test stand fuel system of claim 1, wherein: an oil consumption measuring instrument (11) is connected in series between the temperature regulator (9) and the oil inlet interface (17); the inlet and outlet ends of the oil consumption measuring instrument (11) are connected with a bypass pipe in parallel, and the inlet and outlet ends of the bypass pipe and the oil consumption measuring instrument (11) are respectively provided with a first stop valve (10).
3. The single cylinder diesel test stand fuel system of claim 2, wherein: a second stop valve (2) and a coarse filter (3) are connected in series in sequence on an oil inlet pipe (4) from the fuel tank (1) to the fuel pump (5); the fuel pump (5) is connected with the fuel inlet pipe (4) of the pressure regulator (8) in series with a one-way valve (6) and a fine filter (7) in sequence.
4. A single cylinder diesel test stand fuel system as claimed in claim 3, wherein: the oil inlet port (17) and the oil return port (19) are respectively communicated with the oil inlet pipe (4) and the oil return pipe (21) through the bent pipe (16) and the rubber hose (15).
5. The single cylinder diesel test stand fuel system of claim 4, wherein: the oil return pipe (21) is provided with a second pressure sensor, a second temperature sensor and a third stop valve (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322447356.7U CN220909868U (en) | 2023-09-11 | 2023-09-11 | Single cylinder diesel engine test bed fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322447356.7U CN220909868U (en) | 2023-09-11 | 2023-09-11 | Single cylinder diesel engine test bed fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220909868U true CN220909868U (en) | 2024-05-07 |
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ID=90903985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322447356.7U Active CN220909868U (en) | 2023-09-11 | 2023-09-11 | Single cylinder diesel engine test bed fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220909868U (en) |
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2023
- 2023-09-11 CN CN202322447356.7U patent/CN220909868U/en active Active
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