KR20160141282A - Evaluation device of mechanical fuel injection - Google Patents
Evaluation device of mechanical fuel injection Download PDFInfo
- Publication number
- KR20160141282A KR20160141282A KR1020150076405A KR20150076405A KR20160141282A KR 20160141282 A KR20160141282 A KR 20160141282A KR 1020150076405 A KR1020150076405 A KR 1020150076405A KR 20150076405 A KR20150076405 A KR 20150076405A KR 20160141282 A KR20160141282 A KR 20160141282A
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- KR
- South Korea
- Prior art keywords
- fuel
- pressure
- injector
- unit
- injection
- Prior art date
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Classifications
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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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/002—Measuring fuel delivery of multi-cylinder injection pumps
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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)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a power generating apparatus comprising a power generating unit generating a rotational force by an external power source, a power switching unit that receives a rotational force generated by the power generating unit and converts the rotational motion into a linear reciprocating motion, And a fuel injection unit for injecting the fuel supplied from the fuel supply unit in a linear reciprocating motion of the power switching unit at a high pressure so as to inject the diesel fuel as well as a new alternative fuel such as biodiesel It is possible to use it and realize fuel temperature and injection system in an environment similar to actual use environment, and it is possible to perform durability evaluation by enabling operation of injection pump and injector under certain conditions for a long time, Optimum injector nozzle tip design conditions corresponding to alternative fuels have been derived and are available for new alternative fuels And it is provided with a mechanical fuel injection system evaluation that can activate the response of the injector design key technology promotion and development of new products.
Description
The present invention relates to a nozzle tip optimum design condition of an injector for commercial use of a new alternative fuel. In order to carry out the quality and durability test of the injection pump and the injector above the condition, To a mechanical fuel injection evaluation device which improves reliability in durability evaluation.
Generally, a fuel injection device of a diesel engine can be classified into an electronically controlled fuel injection device and a mechanical fuel injection device according to a control method.
The electronically-controlled fuel injection device includes a high-pressure fuel pump, a common rail that pressurizes the fuel to be fed to the high-pressure fuel pump at a certain pressure, an injector that injects the fuel supplied from the common rail into the cylinder, , An encoder and a pressure sensor, and an engine control unit which receives information on the engine operating state from various sensors or instruments and controls the injection timing, the injection amount, the injection pressure, and the injection rate of the fuel injected from the injector. Injection devices are mainly used.
Unlike the mechanical fuel injection device, the electronically controlled fuel injection device can control the fuel injection timing, the injection amount, the injection pressure, and the injection rate independently of the operation conditions of the engine. Therefore, (PM), soot, and the like. In the case of a small-sized passenger diesel engine, a common rail fuel injection device is generally used.
On the other hand, the mechanical fuel injection device has injection pumps for each cylinder of the engine, and each injection pump is operated by the cam of the camshaft interlocked with the engine, and the fuel is injected through the high pressure pipe into the injector, And the fuel injection amount is controlled according to the engine speed or the load.
The injector is mounted on a fuel supply portion of the engine and automatically supplies an appropriate amount of fuel required for engine operation to the engine combustion chamber, and plays a very important role in engine performance.
That is, when the amount of fuel is less than the reference amount or the amount of fuel is larger than the reference amount or the angle of spraying from the nozzle is irregular, the operation of the engine is unstable, leading to a decrease in output during driving, Not only is the fuel consumption greatly increased, but also the air pollution is increased due to excessive exhaust gas, which causes inconvenience due to bad starting, and it may cause engine stoppage and shortening the life span of the vehicle during operation.
It is common to check one of the most suspicious parts one by one because it is difficult to determine the defect of the injector due to a few symptoms because there are quite a lot of abnormal symptoms that appear as defects of the injector and similar to the symptoms of other parts. The degree of contamination of the hole and the degree of contamination are visually checked to determine whether the defect is defective. However, since accurate diagnosis can not be made, inefficient vehicle maintenance such as disassembling, replacing, or cleaning all the components causing the same symptom There was a problem to be done.
In order to solve such a problem, in Patent Document 10-0750716 (Aug. 13, 2007), a plurality of injectors, which are supplied with test oil from a common rail, are mounted on a fixed base provided at one side of a fixed body, And a storage tank for storing a test oil is provided at a lower portion of the injector, wherein the injector is provided with a lamp for indicating an abnormality of the electric signal system in the injector by applying an operation signal to the injector A plurality of injectors for receiving test oil injected from the plurality of injectors are installed in a lower portion of the fixing table, and a reverse discharge amount measuring unit for measuring the test oil discharged in reverse is installed in the injector Wherein the diameter of the inlet is smaller than the inlet of the discharge volume measuring cylinder Wherein the discharge port is formed so as to face the inlet of the discharge volume measuring cylinder, and the reverse discharge amount measuring section includes a reverse discharge pipe connected to the inlet side of the injector for leading the test oil to the one side, And an inverse discharge amount measuring cylinder for measuring the back discharge amount of the test oil.
The present invention enables the use of new alternative fuels such as biodiesel as well as diesel fuel, realizes the temperature and injection system of the fuel in an environment similar to the actual operating environment, and operates the injection pump and the injector for a long time under certain conditions Based on long-term durability evaluation, optimum injector nozzle tip design conditions corresponding to new alternative fuel are derived, and high-response injector design corresponding to new alternative fuel is possible. Development of core technology and development of new product Which can activate the mechanical fuel injection valve.
The mechanical fuel injection evaluation apparatus according to the present invention comprises a power generating unit for generating a rotational force by an external power source, a power switching unit for receiving the rotational force generated by the power generating unit and converting the rotational motion into a linear reciprocating motion, And a fuel injection unit for injecting the fuel supplied from the fuel supply unit at a high pressure in a linear reciprocating motion of the power switching unit and injecting fuel at a high temperature, The quality and durability tests for pumps and injectors can be conducted.
The power generating unit according to the present invention includes an electric motor for generating a rotational force by rotating a rotary shaft by an external power source, a first belt pulley provided on a first rotary shaft connected to the rotary shaft of the electric motor by a joint, .
The power switching unit according to the present invention may include a second belt pulley connected to the first belt pulley by a belt and coupled to the second rotation shaft at the center thereof and a second belt pulley formed on one side of the second belt pulley, And a camshaft box connected to the second rotation shaft by a joint and converting the rotational motion of the second rotational shaft into a linear reciprocating motion.
The fuel supply unit may include a fuel tank for containing the fuel, a fuel pump connected to the fuel tank through a pipe through which the fuel flows, for pumping and supplying fuel according to a control signal of the control unit, Fuel heating means provided at one side of the fuel tank for warming the fuel contained in the fuel tank to a predetermined temperature by control of a control unit based on the fuel temperature set in the control unit; A fuel cooling water step that cools the fuel contained in the fuel tank to a corresponding temperature by a control signal of a control unit based on a temperature set in the control unit, And a first thermocouple and a second thermocouple that measure the temperature of the first thermocouple.
In addition, the fuel injection unit according to the present invention is mounted on the upper portion of the camshaft box. The fuel injected by the fuel injection unit moves up and down the piston by the cam rotation of the camshaft rotating in the camshaft box, A relief valve provided at one side of the injection pump and opened when the fuel pressure of the injection pump is higher than the designated pressure when the fuel is switched to a high pressure to regulate the pressure; An injector connected to the injection pump and a high-pressure pipe through which a high-pressure fuel flows, for injecting the high-pressure fuel output from the injection pump, and an injector provided at each of the fuel input side, the fuel output side, and the injector of the injection pump, A third thermocouple, a fourth thermocouple, and a fifth thermocouple that measure the temperature of the fuel, the temperature of the high-pressure fuel to be discharged, and the temperature of the fuel to be injected, A first pressure sensor provided at one side of the reef valve for measuring a pressure of the high-pressure fuel sent to the relief valve, and a second pressure sensor provided at one side of the injector for measuring a pressure of fuel injected from the injector .
The mechanical fuel injection evaluation apparatus according to the present invention is capable of using a new alternative fuel such as biodiesel as well as diesel fuel and realizing fuel temperature and injection system in an environment similar to actual use environment, It is possible to evaluate the durability because it can be operated for a long time under a certain condition. Therefore, based on the evaluation of durability for a long time, optimum design conditions of injector nozzle tip corresponding to new alternative fuel are derived, It has the effect of promoting core technology and developing new products.
1 is an exemplary diagram showing a configuration of a mechanical fuel injection evaluation apparatus according to the present invention.
2 is a diagram showing an example of the configuration of a mechanical fuel injection evaluation apparatus according to the present invention.
3 is an exemplary view showing an organic relation between a camshaft box and a jet pump according to the present invention.
4 is an exemplary view showing an installation state of an injector according to the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.
Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.
FIG. 1 is a schematic view showing the construction of a mechanical fuel injection evaluation apparatus according to the present invention. FIG. 2 is a view showing the construction of a mechanical fuel injection evaluation apparatus according to the present invention. FIG. 4 is an exemplary view showing an installation state of the injector according to the present invention. FIG.
The present invention relates to a nozzle tip optimum design condition of an injector for commercial use of a new alternative fuel. In order to carry out the quality and durability test of the injection pump and the injector above the condition, The present invention relates to a mechanical fuel injection evaluation apparatus that improves reliability in durability evaluation by applying the fuel injection control apparatus of the present invention.
1 and 2, the mechanical fuel injection evaluation apparatus according to the present invention includes a
This is for the purpose of making the supply condition of the fuel supplied to the
Among the above components, the
1 and 2, the
At this time, the
The
At this time, bearing members are provided on the front and rear sides of the
The rotational force of the
1 and 2, the
At this time, it is preferable that the rotational speed of the
The second
Further, a
In addition, an encoder (not shown) may be provided at one end of the
The
3, the
Also, in the
The
The oil heating means 243 and the oil cooling means 244 are connected to the
Accordingly, in order to smoothly rotate the
The oil heating means 243 and the oil cooling means 244 may be controlled based on the temperature of the lubricant measured by the sixth thermocouple 243, the
As shown in FIGS. 1 and 2, the
At this time, a fuel heating means 330 is provided at one side of the
A fuel cooling means 340 is disposed on one side of the
The
The fuel supplied from the
1 and 2, the
At this time, the discharged high-pressure fuel is sent to the
In the present invention, it is preferable that a part of the high-pressure fuel is returned to the
As shown in FIGS. 2 and 4, the
At this time, the fuel injected from the
The
In addition, a
When the needle valve ascends and descends along the hollow of the
Therefore, according to the mechanical fuel injection evaluation apparatus of the present invention, the quality and durability test of the injection pump and the injector can be carried out under the actual fuel temperature condition according to the above-described configuration, so that not only diesel fuel but also new alternative fuel such as biodiesel It is possible to use it and realize fuel temperature and injection system in an environment similar to actual use environment, and it is possible to perform durability evaluation by enabling operation of injection pump and injector under certain conditions for a long time, Optimal injector nozzle tip design conditions corresponding to alternative fuels can be derived to promote the development of high-response injector design core technologies and new products corresponding to new alternative fuels
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.
10: Body frame 100: Power generating unit
101: first rotating shaft 102: joint
110: electric motor 120: first belt pulley
200: Power switching unit 201: Second rotating shaft
210: second belt pulley 220: flywheel
230: Camshaft box 231: Camshaft
241: Oil tank 242: Oil pump
243: Oil heating means 244: Oil cooling means
245: sixth thermocouple 246: seventh thermocouple
247: Eighth thermocouple 300: fuel supply unit
310: Fuel tank 320: Fuel pump
330: fuel heating means 340: fuel cooling means
321: first thermocouple 341: second thermocouple
400: fuel injector 410: injection pump
420: relief valve 430: injector
441: Third thermocouple 442: Fourth thermocouple
443: fifth thermocouple 451: first pressure sensor
452: second pressure sensor 500:
Claims (5)
A power switching unit that receives the rotational force generated by the power generating unit and converts the rotational motion into a linear reciprocating motion;
A fuel supply unit for supplying fuel to be converted to a high pressure by a linear reciprocating motion of the power switching unit; And
And a fuel injecting portion for injecting the fuel supplied from the fuel supplying portion into the fuel injecting portion at a high pressure in a linear reciprocating motion of the power switching portion so as to perform quality and durability tests on the injection pump and the injector under actual use temperature conditions. Device.
The power-
An electric motor for generating a rotational force by rotating a rotary shaft by an external power source;
And a first belt pulley provided on a first rotational shaft connected to a rotational shaft of the electric motor by a joint and rotated.
The power-
A second belt pulley connected to the first belt pulley by a belt, the second belt pulley coupled to the second rotation shaft at the center;
A flywheel formed on one side of the second belt pulley and further applying inertia to the second rotation shaft;
And a camshaft box connected to the second rotation shaft by a joint so as to convert the rotational motion of the second rotational shaft into a linear reciprocating motion.
The fuel supply unit
A fuel tank for containing the fuel;
A fuel pump connected to the fuel tank through a pipe through which fuel flows, for pumping fuel according to a control signal of the control unit;
Fuel heating means provided at one side of the fuel tank and preheating the fuel contained in the fuel tank to a corresponding temperature by control of a control unit based on the fuel temperature set in the control unit;
A fuel coolant stage which is disposed at one side of the fuel tank and is connected to a pipe through which fuel flows and cools the fuel contained in the fuel tank to a corresponding temperature by a control signal of a control unit based on a temperature set in the control unit;
And a first thermocouple and a second thermocouple provided in the fuel tank and the fuel cooling means, respectively, for measuring the temperature of the fuel.
The fuel injection unit
A injection pump mounted on the upper portion of the camshaft box for switching the fuel supplied to the piston up and down by the cam rotation of the camshaft rotating in the camshaft box to a high pressure and then discharging the converted high- ;
A relief valve provided at one side of the injection pump for opening and regulating the pressure when the injection pressure of the fuel is higher than a designated pressure when the fuel is switched to high pressure;
An injector connected to the injection pump and a high-pressure pipe through which high-pressure fuel flows, for injecting high-pressure fuel output from the injection pump;
A third thermocouple, a fourth thermocouple, and a third thermocouple, which are respectively provided on the fuel input side, the fuel output side, and the injector of the injection pump and measure the temperature of the fuel input to the injection pump, the temperature of the discharged high- A fifth thermocouple;
A first pressure sensor disposed at one side of the relief valve and measuring a pressure of the high-pressure fuel sent to the relief valve;
A second pressure sensor provided at one side of the injector for measuring a pressure of fuel injected from the injector;
And a second pressure sensor provided at an upper side of the injector for measuring a pressure of fuel injected from the injector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150076405A KR20160141282A (en) | 2015-05-29 | 2015-05-29 | Evaluation device of mechanical fuel injection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150076405A KR20160141282A (en) | 2015-05-29 | 2015-05-29 | Evaluation device of mechanical fuel injection |
Publications (1)
Publication Number | Publication Date |
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KR20160141282A true KR20160141282A (en) | 2016-12-08 |
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Family Applications (1)
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KR1020150076405A KR20160141282A (en) | 2015-05-29 | 2015-05-29 | Evaluation device of mechanical fuel injection |
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KR (1) | KR20160141282A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114263555A (en) * | 2021-09-09 | 2022-04-01 | 泰安九和智能设备有限公司 | Micro-ship engine fuel sprayer calibration equipment |
-
2015
- 2015-05-29 KR KR1020150076405A patent/KR20160141282A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114263555A (en) * | 2021-09-09 | 2022-04-01 | 泰安九和智能设备有限公司 | Micro-ship engine fuel sprayer calibration equipment |
CN114263555B (en) * | 2021-09-09 | 2023-09-12 | 翟泉来 | Verification device for fuel spray nozzle of engine of miniature ship |
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