JP4418845B1 - Method and apparatus for discriminating illegal fuel - Google Patents

Abstract

An identification method and apparatus for simply identifying illegal fuel at the site, employing a reliable measurement method, and using a large vehicle or construction machine that is highly likely to contain illegal fuel. It is an object of the present invention to provide a method of using an identification device and an identification device that can obtain high durability that does not require maintenance even in a harsh environment, and that can exhibit the function of the device for a predetermined period.
An identification method based on color attribute values that employs high reliability, is easy to initialize, and can be manufactured at low cost is adopted. And a detection unit and a determination unit equipped with a color identification sensor and a light source, a result transmission unit, a detection unit of a color identification device having a data storage unit is installed in the fuel return circuit, and fuel is injected into the detection unit only when the engine is operating, Provide a means to discharge immediately after detection. Further, the casing constituting the detection unit is sealed with a light-transmitting resin to protect the electrical components and the like from vibration.
[Selection] Figure 2

Description

  The present invention relates to an illegal fuel discrimination method and apparatus. More specifically, the present invention relates to a method and apparatus for determining whether or not regular fuel is used as fuel for a diesel engine mounted on a vehicle, identifying an unauthorized user, and preventing unauthorized use of light oil. is there.

  A diesel oil tax is levied on diesel oil, which is fuel for vehicles powered by diesel engines. Therefore, fraudulent acts of mixing and manufacturing cheap kerosene and heavy oil that are not taxed in light oil are rampant. The manufacture, sale and use of such illegal diesel oil is not only a malicious tax evasion act, but also a serious anti-social act that adversely affects the living environment such as air pollution and emission of harmful substances.

  On the other hand, the “Law Concerning Regulations on Specified Special Vehicle Emissions”, the so-called “Off-Road Act”, came into force in October 2006, and regulations on emissions are strengthened even for off-road vehicles that do not run on public roads such as construction machinery. It was to be done.

  This “off-road method” also requires engine manufacturers to manufacture and sell standard-compliant engines, and body manufacturers to manufacture and sell vehicles equipped with standard-compliant engines. In addition, users of off-road vehicles are required to use machines that meet the standards, to perform inspection and maintenance, and to use appropriate fuel.

This is because the exhaust gas performance of construction machinery is greatly reduced depending on the state of use. In addition, common rail engines developed by engine manufacturers to meet the above-mentioned off-road method are premised on the use of light oil as fuel, so using fuel other than light oil will not only meet exhaust gas standards, but also There is a high risk of failure.
By the way, construction machines are generally very expensive, and in most cases they are rented from a construction machine rental company rather than owned by the company. In the case of an in-house vehicle, it is considered that proper fuel will be used with due consideration for inspection and maintenance. However, there is a high risk that illegal fuel will be used for machinery owned by others for the purpose of cost reduction.

  In addition, there are cases where a user who is refueling without knowing that it is illegal fuel or illegal light oil from a previous rental destination remains in the fuel tank. At this time, if the superintendent's fuel drain inspection is carried out and the use of illegal light oil is found, the construction may be forcibly stopped, and there is a risk of causing serious damage at large construction sites. In order to prevent such a situation, the construction company, which is a client who borrows rental heavy equipment, requires the rental company to thoroughly manage rental equipment.

  In addition, the use of irresponsible illegal fuel, including such good-willed users, can cause engine troubles in the vehicle and cause high repair costs. However, since there is a time lag from the unauthorized use until the failure is detected, it is difficult to identify the unauthorized user, and the rental company that owns the vehicle bears expensive repair costs at present. is there.

  Accordingly, there is a need for an effective means for quickly and accurately detecting, notifying, and warning about the use of unauthorized light oil, identifying an unauthorized user, and further preventing unauthorized use.

Conventionally, detection methods and devices for unauthorized light oil have been developed for the purpose of preventing the use of unauthorized light oil.
(1) In response to the fact that the sulfur component of diesel oil has reached 10 ppm since 2005, if a sulfur component with a concentration higher than that is detected, it is determined that the gas oil is illegal gas oil. There is a method for identifying light oil (Patent Document 1).

Similarly, there is an analysis method for measuring the sulfur concentration in a sample by fluorescent X-rays (Patent Document 2).
(2) There is a method of detecting an indicator coumarin added to oils other than light oil, determining the presence or absence of light emission by ultraviolet irradiation, and discovering camouflaged light oil (Patent Document 3).
(3) There is a specific gravity measuring device that measures the specific gravity of a liquid and determines a sample (Patent Document 4).
(4) Furthermore, there is an invention relating to a method and an apparatus for detecting the refractive index of fuel oil and its temperature, and making a judgment in comparison with a judgment table prepared in advance (Patent Document 5).
JP 2004-219269 A Japanese Patent Laid-Open No. 7-5127 Japanese Patent Laid-Open No. 10-38878 Japanese Patent Laid-Open No. 10-148609 JP 2008-145340 A

  Although the discrimination accuracy of light oil by the sulfur concentration meter is high, the device itself is expensive and the measuring method is not easy, and operation by a professional engineer is required.

  On the other hand, although a coumarin detector is inexpensive, it takes time to obtain a judgment result, and it is necessary to work in a dark room in order to check the color by irradiating with an ultraviolet lamp. Absent.

  Discrimination with a hydrometer is easily affected by the temperature at the time of measurement. Since the specific gravity of light oil is approximately 0.801 to 0.876 and the specific gravity of A heavy oil is approximately 0.820, mixed light oil such as light oil and A heavy oil is mixed. It is not suitable for discrimination.

  Finally, since the value of the refractometer is also affected by the temperature at the time of measurement, it takes time and labor to set the measuring device to 20 degrees as an initialization procedure and require 20 degrees of fresh water, There is a drawback that it is somewhat difficult to distinguish mixed gas oil.

In addition, no invention has been made so far regarding a detection method for improving the durability of an identification device by limiting the timing for detecting unauthorized light oil and a device having this means .

Therefore, the present application adopts a method of identifying the fuel by the color attribute of the fuel, which allows anyone to determine the presence or absence of unauthorized light oil use in the field easily and in a short time, and is hardly affected by temperature changes. Limiting the installation location of the equipment to reduce the load on the engine and providing a durable fuel detection method that achieves excellent oil resistance and seismic resistance and the equipment used therefor for the illegal use of light oil The purpose is to identify unauthorized users and to control the start of the vehicle engine to prevent unauthorized use of light oil.

Accordingly, claim 1 of the present application describes a vehicle-mounted fuel identification method having means for detecting the attribute value of the color of the fuel to identify the fuel and determining whether or not the illegal light oil is used. The color identification device includes a color identification sensor that detects an attribute value of the color of fuel oil, a detection unit including a light source, a determination unit that determines whether or not unauthorized light oil is used from the detection result, a transmission unit that transmits the result, and a detection It has a structure that has a data storage unit that aggregates the results and judgment results, and a detection method is adopted in which the detection unit is installed in the fuel circuit, fuel is injected into the detection unit only when the engine is running, and fuel is discharged after the engine is stopped. ing.

According to the second aspect of the present invention, the detection unit of the vehicle-mounted identification device having the same configuration as that of the first aspect is installed in the return circuit to the fuel tank, and the fuel is identified by the detection method of the first aspect. is there.

According to a third aspect of the present invention, there is provided a detection unit including a color identification sensor for detecting a color attribute value of fuel oil, a light source, a determination unit for determining the presence or absence of unauthorized light oil from the detection result, and a transmission unit for transmitting the result. And a data storage unit for summing up the detection results and determination results, the detection unit is installed in the fuel circuit, fuel is injected into the detection unit only when the engine is running, and the fuel is discharged after the engine is stopped. The present invention relates to an on-vehicle fuel color identification device having means.

According to a fourth aspect of the present invention, the detection unit of the color identification device according to the third aspect is installed in a return circuit to the fuel tank.

6. The vehicle-mounted fuel color identification device according to claim 5, wherein a fuel injection port and a discharge port are provided in a housing of a detection unit for detecting an attribute value of the color of the fuel, and the housing has a light-transmitting resin. It is characterized by having been enclosed with.

Conventional fuel identification devices such as hydrometers and refractometers are affected by temperature at the time of measurement. However, the fuel color identification method based on the color attribute adopted in the present invention is less susceptible to temperature and always has a stable color attribute. Since the value is obtained, the reliability of the determination result is high.

  The color identification device can also be applied to the determination of mixed fuel, which has been difficult with a refractometer.

  No expensive measuring equipment is required, no special operation method or equipment initialization work is required, and anyone can easily and quickly make measurements quickly and display the judgment results immediately. Inspection time can be shortened.

The fuel detection method adopted in the present application is that the detection unit of the identification device is installed in the fuel circuit, fuel is injected into the detection unit only when the engine is running , and discharged after the engine is stopped. As a type fuel color identification device, the influence of secular change can be minimized and it has excellent durability.

  A detection unit can be installed in the return circuit of the fuel circuit to take out the fuel, and after detection, the fuel circuit can be returned to the fuel circuit to identify the fuel.

  A device having excellent durability can be provided because there is a means for injecting fuel into the detection unit only when the engine is operating rather than putting the fuel identification device into a fuel tank or the like and discharging it after the engine is stopped.

It is possible to provide a device in which the detection unit of the identification device is limited to the return circuit to the fuel tank in the fuel circuit.

  Further, in claim 5, since the detection portion connected to the fuel circuit is sealed with a resin mold having light permeability, a high earthquake resistance can be obtained as a vehicle-mounted identification device.

  When the fuel identification method and system of the present application become widespread, the use of diesel oil as an appropriate fuel for diesel engines will be promoted, illegal activities such as violation of diesel oil take-off tax will be eliminated, and off-road laws will be observed to maintain legal order. As a result, the amount of exhaust gas containing harmful substances can be reduced, which helps to preserve the environment.

  Next, the best mode for realizing the present invention will be described with reference to the drawings and tables. Although the fuel detection method of the identification device described in the claims of the present application and the device used therefor are limited to the vehicle-mounted type, the structure of the portable identification device will also be described here.

  The unauthorized light oil determination method of the present application is a method of determining an oil type by paying attention to a color peculiar to fuel.

  The color has three elements of hue, saturation, and lightness. Light oil has different colors such as emerald green, kerosene is transparent, and heavy oil A is brown and black brown. The type of fuel can be specified by discriminating the elements of each color.

  The following is an embodiment in which the hue of fuel is measured among the three elements of color and the type of fuel oil is identified by the Hue value.

  FIG. 1 is a front view of the fuel detection unit 1 of the portable fuel color identification device charged into the fuel tank 12. The fuel detection unit 1 includes a photo sensor 3, a light source 4, and a temperature sensor 5 inside a housing 2. The housing 2 is a transparent material that can withstand aging, and is formed of an oil-resistant material. Yes. In order to suppress the influence of vibration, the inside is transparent and has good light transmittance, and is filled with a material that can withstand aging, such as a resin mold, as in the case 2 and sealed. A white LED is used as the light source 4 here.

  The liquid 11 present in the recess 2a of the housing 2 molded in a U-shape is the fuel to be detected. The liquid 11 is irradiated from below by the light source 4, and the color is identified by the photosensor 3. In the legs 2b and 2c of the housing 2, the photosensor 3 and the light source 4 are housed in positions facing each other. One end of the support member 9 of the photosensor 3 and the support member 10 of the light source 4 is fixed to the housing inner walls 2d and 2e, and the other end is supported and fixed by two substrates 7 and 8.

  An upper end portion 7 a of the substrate 7 and a determination unit (not shown) incorporating a microcomputer are connected by an electric cable 6. The connection portion 2f between the housing 2 and the electric cable 6 is kept liquid-tight so that fuel does not infiltrate inside the housing.

  FIG. 2 is a front view of the fuel detection unit 13 of the vehicle-mounted fuel color identification device, and FIG. 3 is a schematic right side view. Since the main configuration of the detection unit 13 for detecting the color attribute of the fuel is the same as that of the detection unit 1 of the portable color identification device, only the differences will be described without detailed description.

The detection unit 1 of the portable color identification device puts it in the fuel tank at the time of measurement and performs the detection work. However, in the case of the on-vehicle color identification device, if the detection unit is always put in the fuel tank, it will be oil resistant. Anxiety remains about sex and aging. Therefore, in order to minimize the influence of secular change, the fuel is injected into the detector only when the engine is running in order to further improve durability by installing the detector 13 outside the fuel tank without introducing it into the fuel tank. It is configured to do.

Specifically, the detection unit 13 of the fuel identification device is installed in the fuel circuit. For example, the location 19 in front of the fuel injection pump 22 in the fuel circuit shown in FIG. 4 or the fuel return circuit 20 before returning the fuel to the fuel tank 21.

  In terms of shape, the detection unit 1 of the portable color identification device molded the housing 2 into a U-shape and detected the color attribute of the fuel oil present in the recess. In the detector 13, the recess 15 is closed by the outer wall 14 a of the housing 14, and an inlet 16 and an outlet 17 for injecting fuel oil as a sample are formed in a space 15 formed inside. The injection port 16 and the fuel circuit are connected in a liquid-tight manner by a pipe (not shown), and fuel oil is injected into the detection unit 15 as the engine is operated. After the engine is stopped, this pipe is connected to the discharge port 17 ( (Not shown) to the fuel circuit. In addition, the detecting portion of the vehicle-mounted color identification device is provided with four mounting flanges 18 having mounting holes for mounting and fixing in the vicinity of the tank.

  FIG. 5 is a block diagram of the fuel color identification device and identification system of the present application.

According to this, the detection unit 23 collects fuel as a sample and obtains color information by a photo sensor. Next, the microcomputer unit 24 acquires and processes the electrical signal converted in proportion to the color attribute value , identifies the fuel based on the previously detected fuel color attribute value, and sends the determination result to the transmission unit 25. It communicates.

As a transmission method, it is conceivable that the determination result is displayed as a circle, a warning is given by a buzzer, or a warning is given by flashing light. If a device that warns by voice or the like when detecting unauthorized light oil is provided in the configuration of the vehicle-mounted identification device, refueling heavy equipment without knowing that it was illegally sold, Announcement is certain. Furthermore, since a controller for forcibly stopping the engine by cutting the fuel or the like in the fuel circuit is provided, once unauthorized light oil is detected, it is impossible to continue using the unauthorized light oil. As a result, it is possible to prevent damage to a common rail engine that has been developed using proper light oil and mounted on a diesel vehicle, and to prevent inappropriate exhaust gas emission.

Further, data of inspection results and determination results are accumulated by the application unit 27, taken out by an output medium such as a serial port, USB, SD card, or the like, and output to a PC (28). By connecting the identification device and the communication management server, the inspection results of the identification device can be collected and centrally managed, and the setting of the determination criteria can be easily changed. In addition, by connecting to the mobility management system, it is possible to specify the time of unauthorized use and the unauthorized user, which can be used for measures against unauthorized use of light oil. Specifically, it can be output to a PC and printed out as appropriate to give instructions and warnings about the use of regular fuel . It can also be used as evidence to clarify the responsibility of a rental heavy machine when it is damaged. It is.

  The fuel identification method employed in the present application identifies the fuel based on the three attributes of color, hue (H), saturation (S), and brightness (V). Since the hue (hue), absorbance (brightness), and the like differ depending on the type of fuel, the fuel is identified based on these numerical values or numerical values obtained by combining two or more of the three attributes. It is possible to identify by one attribute value, and it is possible to identify with higher accuracy by combining them.

  By the way, in order to identify the fuel by its color attribute, it is necessary to obtain in advance the attribute value of the color which is the determination criterion. Here, the determination method will be described while showing experimental data for obtaining the hue value of the three elements of color.

Table 1 shows the Hue value of the inspection object obtained using three sensors, the temperature at the time of measurement, and the possibility of discrimination. D0 to D5 are kerosene in different sales regions, K0 to K7 are light oils in different sales regions, and LSA is A heavy oil. The sales area is 0 for Nara, 1 for Sendai, 2 for Tokyo, 3 for Nagoya, 4 for Hiroshima, and 5 for Fukuoka.
Light oil is also used in different regions, and the sales place indicated by the numbers is the same as kerosene. In addition to these regions, K6 is a light oil sold in Hokkaido and K7 Okinawa. Light oil has a large difference in viscosity depending on the sales region, so these regions are added for comparison.

From this result, the Hue value of diesel oil is distributed between the minimum value 14.9 and the maximum value 38.5, the minimum value of kerosene is 44.5, and the heavy oil A is distributed from 10.0 to 11.8. Therefore, the range of each Hue value can be set to light oil 14 to 40, kerosene 42 or more, and A heavy oil 13. In this way, even if the Hue value of the same fuel in different sales regions is detected, the Hue value remains within a certain range, so the color attribute value, in this case the Hue value, which is the hue, is measured. It can be said that identification is possible.

  Next, an experiment was conducted as to whether or not color discrimination of so-called mixed light oil, in which kerosene was mixed with light oil, was possible. The results are shown in Table 2.

When the Hue value of mixed gas oil was measured by changing the mixing ratio from 100 g to 300 g of kerosene with respect to 200 g of diesel oil, a Hue value of 38.8 was detected for diesel oil mixed with 33.3% kerosene. Since it is in the range of 14 to 40, which is an appropriate range of light oil, it can be seen that the mixed light oil cannot be identified. On the other hand, when the mixing ratio increases, the Hue value is outside the range of the Hue value of the light oil, so that it becomes clear that the mixed light oil is not 100% light oil. Furthermore, according to the display method described later, the cursor of the display scale indicates light oil from kerosene, so that it can be estimated that the kerosene is mixed.

At the same time, an experiment is conducted to determine whether or not the mixed fuel can be identified by a refractometer.
The refractive index of each fuel is measured in advance. According to this, the maximum value of kerosene with a low refractive index is 1.4465, and the minimum value of heavy oil A with a high refractive index is 1.4635, so the refractive index of light oil is , 1.4470 to 1.4630 are within the proper range.

  We tried to identify the fuel based on the proper range of the refractive index of the various fuels obtained in this way, but the refractive index detected by the refractometer was 1.4486 even when the kerosene ratio gradually increased and exceeded 60%. The refractive index of light oil is shown, and it can be seen that the mixed light oil cannot be identified by the refractometer. The result confirms the disadvantage of the refractometer, which has been difficult to identify the mixed gas oil, which has been pointed out in the past.

  Table 3 below shows the experimental results for a fuel mixture of light oil and A heavy oil. While gradually increasing the amount to 200 g of light oil, A heavy oil is mixed to produce various proportions of light oil, and the Hue value and the value measured by a refractometer are described.

  According to this, when A heavy oil is mixed in light oil at a rate lower than 33%, the value within the appropriate range (14 to 40) of the Hue value of light oil is measured despite the fact that it is a mixed light oil. Although it cannot be identified that it is light oil, after the mixing ratio exceeds 50%, the influence of A heavy oil appears on the Hue value, and it can be confirmed that it is not 100% light oil, and by using the display scale described later Since the cursor points to light oil from A heavy oil, it can be estimated that the mixed fuel is A heavy oil. On the other hand, the value detected by the refractometer is what the mixing ratio of A heavy oil is, and the numerical value of 1.4470 to 1.4630, which is within the appropriate range of the refractive index of light oil, is detected. It can be seen that there is no identification at all.

  As described above, the fuel identification method using a hydrometer or refractometer is easily affected by temperature during measurement. On the other hand, the measurement by the color identification method is not easily influenced by temperature. The experimental results supporting this are shown below. In Table 4, Hue values were measured for A heavy oil, kerosene, and light oil by changing the temperature at the time of measurement, but almost no change was found in the detection results. FIG. 7 is a graph showing the results. The side lines representing each Hue value were almost all flat, and it was confirmed that the detection method by color discrimination was hardly affected by temperature during measurement.

  Similarly, for various diesel oils with different sales locations, we checked whether the Hue value changed by changing the temperature at the time of measurement. The results are shown in Tables 5 and 6 below.

The sales areas for diesel oil are Nara, K1, Sendai, K2, Tokyo, K3 Nagoya, K4 Hiroshima and K5 Fukuoka. Although the Hue value varies depending on the light oil sales region, none of them is affected by the temperature at the time of measurement, and the measured value is within the appropriate range of the Hue value of light oil. FIG. 8 and FIG. 9 are graphs showing the change of the Hue value due to temperature. In both cases, the bar is almost flat and the measured value by color identification is hardly affected by the temperature at the time of measurement. The fluctuation rate of the Hue value corresponding to the temperature change of diesel oil is around 5%, which is higher than that of other fuels. For example, the graph showing the temperature change of the Hue value of K2 diesel oil Tokyo and K5 diesel oil Fukuoka is somewhat Although a gradient appears, the Hue value range of light oil is very wide, 14 to 40, as determined in Table 1, and both are numerically within the appropriate range of light oil.

Next, an operation procedure of the color identification device will be described. FIG. 10 is a flowchart showing an operation procedure of the portable color identification device. Reference is made to FIG. 5, which is a block diagram of the apparatus and system, as appropriate. Portable, vehicle-mounted both devices are connected to the power supply unit 26. As a power source, a portable battery uses a dry battery, and a vehicle-mounted battery uses a battery or a dry battery. In step 29, when the portable identification device is turned on, the fuel identification device is initialized. This is because the discriminator is set to show the Hue value of air at the manufacturing stage, and therefore it is necessary to calibrate the discriminator with the user's light oil at the user stage (procedure 30). After resetting, multiple measurements are made within a few seconds, and the average value is detected as the current fuel Hue value. The detection result is calculated by the microcomputer unit 24, the determination result is transmitted to the transmission unit 25 (procedure 31), and the determination result of normal light oil or illegal light oil is shown (procedures 38 and 39). As a method for transmitting the determination result, display using a display scale composed of a cursor and a scale is suitable. In this display scale 32 (FIG. 6), the Hue value is described at the lower end 32a, and the fuel name is described in the scale 32b. In addition, partitions indicating the upper and lower limits of each fuel are clearly indicated (33, 34, 35, 36), and the determination result is indicated on the scale 32 by a cursor 37 that moves left and right on the scale. According to this display scale 32, the user can recognize at a glance whether the determination result and the fuel used are from heavy oil or kerosene. Even if it is a mixed fuel with a mixing ratio of 30% or less, which is not good at the color fuel identification device, it is possible to easily determine the estimation of the type of fuel mixed in the light oil. As another method for transmitting the determination result, ◯ is displayed for normal light oil, and X is displayed for other cases. Alternatively, if the fuel oil is not appropriate, a flashing display or a warning by a buzzer may be given to call attention (procedure 40). Furthermore, in addition to the determination result, the detected Hue value may be digitally displayed. By displaying the identification result, the inspector can easily determine whether or not the proper fuel is used.

The operation procedure shown in FIG. 10 so far is the basic operation procedure of the portable color identification device. If a data storage function for adding up and storing the detection results and determination results is added to this (step 41), an SD card storing data stored in the apparatus in advance or an output means such as a serial port or USB The data can be extracted and output to the computer (procedure 42), and the presence or absence of illegal gas oil can be confirmed (procedures 43 and 44). This is an effective means when the vehicle user and the vehicle manager are different. In other words, even if the vehicle user secretly supplies cheap illegal light oil, it is possible to promptly respond such as finding it at this stage, pointing out this, and providing improvement guidance.

5 and 11 are flowcharts showing the system configuration and operation procedure of the vehicle-mounted color identification device. The detection part of the vehicle-mounted color identification device described above is attached in the vicinity of the fuel tank of the vehicle. When the vehicle status switch is turned on (procedure 45), the identification device is initialized. Along with the engine operation, fuel is injected into the detection unit of the color identification device installed in the fuel circuit, and inspection is performed. This inspection is set to be performed only once every time the main switch is turned on, and the fuel is discharged after the engine is stopped . Similar to the portable identification device, a plurality of measurements are instantaneously performed and the average value is displayed as a detection result. When the suitability of the fuel being used is judged from the detection result, the judgment result is displayed on the LCD display part attached to the inside or outside of the vehicle where it can be seen from the outside (procedures 46 and 47). Notifies the vehicle user by a buzzer sound (step 48). The reason why the alarm function (FIGS. 5 and 49) is added to the vehicle-mounted type is that the inspector always confirms the inspection result in the portable type identification device, but in the case of the vehicle-mounted type, so-called unauthorized fuel is used without knowing. This is because a good-willed user may not confirm the LCD display, and even in such a case, it is necessary to reliably communicate and notify the use of illegal fuel. However, it is a matter of course that even a portable identification device may be configured not only to display an LCD but also to notify by sound such as a buzzer. The operation procedure of the vehicle-mounted color identification device is up to this point. In addition, the vehicle-mounted color identification device having a data storage function stores detection results and determination results as data (procedure 50). The data is output to the computer by the above-mentioned data output means (step 54), and the vehicle manager can confirm and manage whether or not the user is using appropriate fuel (FIGS. 5 and 28).

The engine is forcibly stopped when it is determined that the gas oil is illegal (procedure 51). In the vehicle-mounted color identification device, if it is determined that the illegal gas oil is used, the engines arranged in the fuel circuit of the vehicle are used. The controller to be stopped cuts the fuel and forcibly stops the engine (FIGS. 5 and 52). For example, a solenoid attached to the injection nozzle shuts off the fuel. In this way, when the use of illegal light oil is discovered, the engine is forced to stop, preventing damage to the common rail engine designed for the use of diesel oil installed in diesel vehicles, and contaminating air Can also be prevented.
In addition, it is possible to reliably prevent the use of malicious users who intentionally supply illegal light oil to rental heavy equipment etc. for the purpose of reducing fuel costs and ignore the discrimination result of illegal light oil and continue to use it. is there.

When the fuel color identification system is a portable type and a vehicle-mounted color identification device, the application unit 27 is connected to a communication management server via a communication line for transmitting and receiving detection results and determination results (FIGS. 5 and 55). Data such as detection results and determination results can be transmitted (procedure 53) to be collected and managed. The measurement results can be centrally managed and the addresses of the users of the identification device can be managed even in remote locations to detect unauthorized use and manage data. In addition, it is convenient to set and change the color attribute that is the determination criterion and to set and change the arithmetic program in one place.

  By connecting the application unit 27 to the communication management system 55, it is possible to specify the location and date of measurement by color identification, and it becomes possible to identify unauthorized light oil users to rental heavy machinery, which has been considered difficult until now. is there. In addition, data is output to a PC (procedure 54) for management, printed out as appropriate, and presented to unauthorized users of light oil, and can be used effectively as guidance for use of appropriate light oil, warning, or subsequent evidence.

  The fuel color identification method and apparatus of the present application can be used when identifying fuel, particularly whether or not light oil, which is an appropriate fuel, is used in a vehicle equipped with a diesel engine.

The front view of a portable color identification device fuel detection part. The front view of a vehicle-mounted color identification apparatus fuel detection part. FIG. Explanatory drawing which shows the installation place in the fuel circuit of a vehicle-mounted fuel color identification apparatus. The block diagram which shows the structure of a light oil identification device and a system. Explanatory drawing of a display scale. The graph which shows the temperature change of the Hue value of a fuel. The graph which shows the temperature change of the Hue value of the light oil from which a sales area differs. The graph which shows the temperature change of the Hue value of the light oil from which a sales area differs. The flowchart which shows the operation | movement procedure of a portable color identification device. The flowchart which shows the operation | movement procedure of a vehicle-mounted color identification device.

1. Portable fuel color identification device fuel detector
2, 14, housing 3, photo sensor
4. Light source 5, temperature sensor
6. Electric cables 7, 8 and board
9, 10, support member 13, vehicle-mounted fuel color identification device fuel detection unit
16. Fuel inlet
17. Fuel outlet 18, mounting flange
32, display scale 37, cursor

Claims (5)

A detection unit for detecting a color attribute value of a fuel having a color identification sensor and a light source;
A determination unit for determining a detection result;
A transmission unit for transmitting the determination result;
A detection unit of a vehicle-mounted fuel color identification device having a data storage unit for counting detection results and determination results is installed in the fuel circuit;
Fuel is injected into the detector only when the engine is running and discharged after the engine is stopped.
Color identification method for vehicle-mounted fuel. 2. The vehicle-mounted fuel color identification method according to claim 1, wherein the detection unit of the color identification device is installed in a return circuit to the fuel tank for detection. A detection unit for detecting a color attribute value of a fuel having a color identification sensor and a light source;
A determination unit for determining a detection result;
A transmission unit for transmitting the determination result;
It has a data storage unit that tabulates the detection results and judgment results,
A vehicle-mounted fuel color identification device having means for injecting fuel only into the detection unit installed in the fuel circuit only when the engine is operating and discharging the engine after the engine is stopped. 4. The on-vehicle fuel color identification device according to claim 3, wherein a detection unit for detecting an attribute value of the color of the fuel is installed in a return circuit to the fuel tank. 5. The vehicle-mounted fuel according to claim 3 or 4, wherein a housing of a detection unit for detecting an attribute value of the color of the fuel having an inlet and an outlet for fuel is sealed with a light-transmitting resin. Color identification device.

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