JP4200012B2 - Light oil identification method, light oil identification device, and light oil identification system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a light oil identification method, a light oil identification device, and a light oil identification system for inspecting exhaust gas of a diesel vehicle and determining whether or not the fuel oil used in the diesel vehicle is regular light oil.
[0002]
[Prior art]
In recent years, as automobile fuel oil for vehicles equipped with diesel engines such as trucks, the use of light oil mixed with kerosene or heavy oil, or the use of illegal light oil using kerosene or heavy oil itself has become a social problem. Exhaust gas when using illegal light oil has more pollutant emissions than when using regular light oil, and adverse effects on the environment are also a serious problem.
Conventionally, a method of cracking down on such unauthorized diesel oil is performed by collecting and analyzing fuel from a truck or the like operating on the road and checking whether or not a discriminating agent called coumarin is included.
That is, in order to control illegal light oil, it is obliged to add coumarin to kerosene and A heavy oil, and it is possible to identify illegal light oil containing kerosene and A heavy oil because it contains this coumarin. (For example, refer to Patent Documents 1 and 2.)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-38878 [Patent Document 2]
Japanese Patent Laid-Open No. 5-4936
[Problems to be solved by the invention]
However, according to such a conventional method, since it is necessary to collect fuel from a truck or the like, there is a problem in that it takes time for inspection.
In addition, illegal light oil using imported crude oil has a problem that regular light oil and these illegal light oils cannot be distinguished by conventional methods because coumarin is not mixed. Further, coumarin is easily adsorbed and removed by the adsorbent, and there is a problem that it is difficult to identify the fuel by inspection of fuel from a truck or the like.
[0005]
The present invention has been considered in view of the above circumstances. By examining the exhaust gas of a diesel vehicle by paying attention to the amount of sulfur contained in the diesel oil, illegal diesel oil is used in the fuel oil of the diesel vehicle. An object of the present invention is to provide a light oil identification method, a light oil identification device, and a light oil identification system for determining whether or not the fuel oil is present.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a light oil identification method according to claim 1 of the present invention is a light oil identification method for examining whether or not unauthorized light oil is used as fuel oil for a diesel vehicle by inspecting exhaust gas of the diesel vehicle. A method for detecting the amount of sulfur oxide in the exhaust gas of a diesel vehicle and determining that illegal diesel oil is used as the diesel vehicle fuel oil when the amount of sulfur oxide is greater than or equal to a predetermined amount. .
[0007]
If the identification method of the light oil currently used for the diesel car is made into such a method, it can be judged rapidly whether the illegal light oil is used for the fuel oil of the diesel car.
The conventional method for identifying light oil by detecting coumarin has a problem in that it takes time and effort to collect and inspect fuel from a truck or the like.
However, according to the method of the present invention, since the inspection can be performed using the exhaust gas of the truck or the like, the inspection can be quickly performed while the engine is idling.
In addition, it is possible to determine whether or not illegal light oil is used by inspecting the concentration of sulfur oxides contained in exhaust gas without using coumarin contained in illegal light oil. It is possible to make an effective determination even for illegal light oil produced using oil or the like and illegal light oil from which coumarin has been adsorbed and removed.
Here, the sulfur oxide that is the detection target can be mainly expressed as SOx, and for example, SO ₂ can be the detection target. Hereinafter, this sulfur oxide amount may be referred to as the SOx amount.
[0008]
The light oil identification method according to claim 2 of the present invention is a method in which the predetermined amount of SOx in the exhaust gas is 10 ppm.
If the light oil identification method is such a method, it can be determined that illegal light oil is used when the amount of SOx contained in the exhaust gas is 10 ppm or more.
This is because the sulfur content of diesel oil for diesel automobile fuel is regulated to 500 ppm or less, and when a fuel with a sulfur content of 500 ppm is used, the SOx content in the exhaust gas during idling is about 5 to 10 ppm. It is because it becomes.
Therefore, by setting the criterion for using illegal light oil to 10 ppm or more, diesel automobile fuel oil having a sulfur content of 500 ppm or more can be detected, and heavy oil or imported crude oil is mixed with the fuel oil. It becomes possible to judge.
[0009]
The light oil identification method according to claim 3 of the present invention is a method in which the predetermined amount is 1 ppm.
If the light oil identification method is such a method, it can be determined that illegal light oil is used when the amount of SOx contained in the exhaust gas is 1 ppm or more. This is combined with the fact that by 2004, the sulfur content of diesel oil will be regulated from 500 ppm or less to 50 ppm or less in order to suppress harmful substances emitted by diesel vehicles. When a fuel having a sulfur content of 50 ppm is used, the amount of SOx in the exhaust gas during idling is about 0.5 to 1 ppm.
Therefore, the diesel automobile fuel oil whose sulfur content is 50 ppm or more can be detected by setting the judgment standard for using illegal light oil to 1 ppm or more. And it becomes possible to determine with the fuel oil being mixed with heavy oil or imported crude oil.
In addition, in the EU and the like, the sulfur content of light oil is also considered to be 10 ppm in the long term, and when such changes occur in Japan in the future, the SOx amount that is judged to be the use of unauthorized light oil Needless to say, it can be changed.
[0010]
The light oil identification device according to claim 4 of the present invention is a light oil identification device for inspecting exhaust gas of a diesel vehicle and determining whether or not unauthorized light oil is used as fuel oil of the diesel vehicle. A detection unit for detecting the amount of sulfur oxide in the exhaust gas, a determination unit for determining that unauthorized diesel oil is used as the diesel automobile fuel oil when the amount of sulfur oxide is a predetermined amount or more, and a result of the determination And a display unit for displaying.
[0011]
If the light oil identification device has such a configuration, it is determined whether or not the used fuel is an illegal fuel based on the SOx amount in the exhaust gas by holding it over an exhaust pipe such as a truck. Can do.
For this reason, in a road survey for detecting illegal light oil, it is possible to quickly perform the investigation and efficiently identify the unauthorized light oil.
[0012]
The light oil identification device according to claim 5 of the present invention is configured such that the predetermined amount of SOx in the exhaust gas is 10 ppm.
If the light oil identification device has such a configuration, when the amount of SOx in the exhaust gas is particularly 10 ppm or more, it can be determined that the fuel used in the diesel vehicle is illegal light oil.
[0013]
The light oil identification device according to claim 6 of the present invention is configured such that the predetermined amount is 1 ppm.
If the light oil identification device has such a configuration, when the SOx amount in the exhaust gas is particularly 1 ppm or more, it can be determined that the fuel used in the diesel vehicle is illegal light oil.
[0014]
The light oil identification system according to claim 7 of the present invention is a light oil identification system that inspects exhaust gas of a diesel vehicle via a communication line and determines whether or not unauthorized light oil is used as fuel oil of the diesel vehicle. One or two or more of detecting the amount of sulfur oxide in the exhaust gas of a diesel vehicle and transmitting it to the management server and receiving a determination result as to whether or not unauthorized light oil is used from the management server A light oil identification device, a management server that receives the amount of sulfur oxide, determines whether or not unauthorized diesel oil is used in the diesel vehicle based on the amount of sulfur oxide, and transmits a determination result to the light oil identification device; The configuration includes a communication line connecting the light oil identification device and the management server.
[0015]
If the light oil identification system is configured as described above, the management server can centrally manage the determination results based on the detection results transmitted from a plurality of light oil identification devices, for example, and it can be used for dealing with illegal light oil use. be able to.
In addition, since the management server manages the amount of sulfur oxide that is a determination criterion, the determination criterion can be easily changed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[First embodiment]
First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing the operation of the light oil identification device of the present embodiment. FIG. 2 is a block diagram showing the configuration of the light oil identification device of the present embodiment. FIG. 3 is a diagram illustrating the operation of another example of the light oil identification device according to the present embodiment.
[0017]
The light oil identification device 10 of the present embodiment determines whether or not the automobile fuel oil used in a truck or the like on which a diesel engine is mounted is not an unauthorized light oil.
As shown in FIG. 1, the light oil identification device 10 of the present embodiment uses illegal light oil by inspecting the SOx amount of exhaust gas discharged from an exhaust pipe of a truck or the like that is operating on the road during the inspection. It can be determined whether or not.
For this reason, it is possible to conduct a survey more quickly than a conventional diesel oil fuel oil sampling survey, and it is also possible to quickly determine the use of illegal light oil such as imported crude oil.
[0018]
As illustrated in FIG. 2, the light oil identification device 10 includes a detection unit 11, a determination unit 12, and a display unit 13.
The detection unit 11 detects the amount of SOx in the exhaust gas. Then, the detected SOx amount is output to the determination unit 12.
Examples of the method for detecting the SOx amount include a solution conductivity method, an infrared absorption method, an ultraviolet absorption method, and a constant potential electrolysis method.
Some of these detection methods are affected by interference gases. For example, in SOx detection using a constant potential electrolysis method, interference from nitrogen dioxide in exhaust gas is received, and the total value of SOx concentration and nitrogen dioxide concentration is output as a detection value. In such a case, a detector for nitrogen dioxide is also attached, and the value of only SOx can be known by subtracting the nitrogen dioxide detection value from the SOx detection value.
Further, an apparatus for removing interference gas such as a catalyst may be attached upstream of the detection unit. When the above-described constant potential electrolysis method is used, the influence of nitrogen dioxide can be reduced by attaching a denitration catalyst.
Since some detectors require water removal, a drain device is attached if necessary.
[0019]
The detection value is acquired by the detection unit 11 as an electrical signal such as a current value or a voltage value proportional to the concentration. For example, when the solution conductivity method is used, when the gas is electrolyzed on the electrode, the detection unit 11 measures the current flowing in the electrolytic solution.
Then, the obtained current value is converted into a concentration and output to the determination unit 12.
For detection of SOx, idling is preferably performed at an engine speed of 500 to 900 rpm, a water temperature of 50 ° C. or higher, and an oil temperature of 50 ° C. or higher after warming up the engine of the diesel vehicle. Immediately after the engine is started or when the accelerator is depressed, many interfering substances such as NOx and unburned hydrocarbons are undesirable.
[0020]
The determination unit 12 stores a predetermined SOx amount in advance. Although the SOx amount is not shown in the figure, for example, an input device such as a numeric keypad may be placed on the light oil identification device 10 and input and set as numerical data based on the input. Then, the determination unit 12 compares the SOx amount (detected SOx amount) input from the detection unit 11 with a preset SOx amount (set SOx amount), and when the detected SOx amount exceeds the set SOx amount, It is determined that illegal diesel oil has been used for the diesel automobile fuel oil, and this is output and displayed on the display unit 13 which is a display device such as a liquid crystal display.
[0021]
For example, when 10 ppm is set as the SOx amount in advance and 9 ppm is input as the detected SOx amount, it is determined that the detection is normal (use of regular light oil). When 11 ppm is input as the detected SOx amount, it is determined that illegal light oil is used, and a message indicating this is displayed on the display unit 13.
For this reason, it is possible to determine whether regular light oil or illegal light oil is used as fuel oil for diesel vehicles by inspecting the exhaust gas.
In addition, it is also preferable to display not only a message indicating the determination result of whether or not illegal light oil is used on the display unit 13 but also the detection value, concentration, and the like obtained by the detection unit 11. Further, the detection value can be output from the detection unit 11 to the display unit 13 in addition to being output to the display unit 13 by the determination unit 12.
[0022]
Furthermore, the light oil identification device 10 of this embodiment can also be comprised by gas detectors (light oil identification device 10a), such as a gas detector tube, a gas alarm device, and a portable exhaust gas analyzer as shown in FIG. In this case, the gas detector has the same configuration as the light oil identification device 10 shown in FIG. 2 and, for example, only the detection unit 11 is held and the detection result by the detection unit 11 can be confirmed directly visually. It can be.
[0023]
As described above, according to the light oil identification device of the present embodiment, it is not necessary to perform a fuel sampling inspection as compared with the conventional inspection of illegal light oil by coumarin, and the exhaust discharged from the exhaust pipe of a truck or the like. Since the use of illegal light oil can be determined by inspecting the gas, it is possible to save time and speed up the inspection.
In addition, when heavy oil without added coumarin is imported and illegal light oil is manufactured and used, or when illegal light oil from which coumarin is removed by an adsorbent is used, it is identified. Is possible.
[0024]
[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a diagram showing the operation of the light oil identification system of the present embodiment. FIG. 5 is a block diagram showing a configuration of the light oil identification device 10 in the light oil identification system of the present embodiment. FIG. 6 is a block diagram showing the configuration of the management server 20 in the light oil identification system of this embodiment.
In the present embodiment, the light oil identification device 10 transmits the detection result to the management server 20 via the communication line, the management server 20 determines whether the unauthorized light oil is used, and transmits the determination result to the light oil identification device 10. It differs from the first embodiment in that this determination result is centrally managed.
[0025]
As shown in FIG. 4, the light oil identification device 10 of the present embodiment is connected to a communication line 30 by a wireless line or a wired line, and is connected to the management server 20 via the communication line 30.
As shown in FIG. 5, the light oil identification device 10 of this embodiment includes a detection unit 11, a display unit 13, and a transmission / reception unit 14. The functions of the detection unit 11 and the display unit 13 are the same as those in the first embodiment.
The transmission / reception unit 14 transmits the SOx amount data input from the detection unit 11 to the management server 20 via the communication line 30.
Further, the determination result is received from the management server 20 and output to the display unit 13 to be displayed.
[0026]
The management server 20 receives SOx amount data from a plurality of light oil identification devices 10 via communication lines, determines whether or not unauthorized light oil has been used based on this data, and manages the determination result in an unauthorized manner. This is useful for responding to light oil usage monitoring.
As illustrated in FIG. 6, the management server 20 includes a transmission / reception unit 21, a determination unit 22, and a totaling unit 23.
The transmission / reception unit 21 receives the SOx amount data from the light oil identification device 10 via the communication line and outputs the SOx amount data to the determination unit 22.
Moreover, the transmission / reception part 21 receives the determination result performed by the determination part 22, and transmits the determination result to the corresponding light oil identification apparatus 10 via a communication line.
Therefore, the management server 20 can manage the address of each light oil identification device 10 connected via the communication line, and can also manage the SOx amount data and the determination result in association with the address. .
[0027]
The determination unit 22 compares the predetermined SOx amount set in advance with the SOx amount transmitted from the light oil identification device 10 to determine whether or not unauthorized light oil has been used.
About this determination method, it can be made the same as the determination method in the determination part 12 of the light oil identification device 10 of 1st embodiment. Further, the determination unit 22 outputs the determination result to the transmission / reception unit 21 and the aggregation unit 23.
The totaling unit 23 inputs the determination results of the light oil identification devices 10 from the determination unit 22 and totals them. Thereby, the total result can be utilized for correspondence to illegal light oil use.
[0028]
As described above, according to the light oil identification system of the present embodiment, since the management server 20 can make a determination based on the detection results detected by the plurality of light oil identification devices 10, the determination results are concentrated. It can be managed and used for dealing with illegal diesel oil use.
In addition, when there is a change in regulations on light oil, it is not necessary to change the SOx amount settings in the plurality of light oil identification devices 10, and it can be dealt with only by changing the settings in the management server 20.
Therefore, according to the light oil identification device 10 of the first embodiment, when the number of light oil identification devices 10 is large, changing the set SOx amount becomes extremely complicated, but this is performed by the light oil identification system of the present embodiment. It can be easily performed.
[0029]
In addition, this invention is not limited to the above embodiment, It cannot be overemphasized that a various change implementation is possible within the scope of the present invention.
For example, when there is a change in the oil type classification, even if a problem similar to the current problem with light oil occurs for oil types other than light oil, it is illegal to change the SOx amount to be detected. The fuel can be controlled.
In addition, it is possible to change the design as appropriate, such as integrating each component in the light oil identification device, dividing it into more detailed functions, or integrating a specific function of one component with the function of another component It is.
[0030]
【The invention's effect】
As described above, according to the present invention, it is not necessary to carry out a fuel sampling inspection as compared with the conventional determination by coumarin, and illegal light oil is used by inspecting exhaust gas discharged from an exhaust pipe of a truck or the like. Therefore, it is possible to save the labor of the inspection and speed up.
Also, it is easy to import heavy oil without added coumarin to produce and use illegal light oil, or to use illegal light oil from which coumarin has been removed by an adsorbent. It is possible to detect.
Further, if the management server determines the detection results performed by a plurality of light oil identification devices via the communication line, the determination results can be centrally managed, and the determination criteria can be easily changed. Become.
[Brief description of the drawings]
FIG. 1 is a diagram showing the operation of a light oil identification device according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a light oil identification device according to the first embodiment of the present invention.
FIG. 3 is a diagram showing the operation of another example of the light oil identification device according to the first embodiment of the present invention.
FIG. 4 is a diagram showing the operation of the light oil identification system according to the second embodiment of the present invention.
FIG. 5 is a block diagram showing a configuration of a light oil identification device in the light oil identification system of the second embodiment of the present invention.
FIG. 6 is a block diagram showing a configuration of a management server in the light oil identification system according to the second embodiment of the present invention.
[Explanation of symbols]
10 Light oil identification device 10a Light oil identification device (gas detector)
DESCRIPTION OF SYMBOLS 11 Detection part 12 Determination part 13 Display part 14 Transmission / reception part 20 Management server 21 Transmission / reception part 22 Determination part 23 Total part 30 Communication line

Claims (7)

A diesel oil identification method for inspecting exhaust gas from a diesel vehicle and determining whether or not unauthorized diesel oil is used as fuel oil for a diesel vehicle,
A diesel oil identification method characterized by detecting the amount of sulfur oxide in exhaust gas from a diesel vehicle and determining that illegal diesel oil is used as the diesel vehicle fuel oil when the sulfur oxide amount is greater than or equal to a predetermined amount. . The light oil identification method according to claim 1, wherein the predetermined amount is 10 ppm. The light oil identification method according to claim 1, wherein the predetermined amount is 1 ppm. A diesel oil identification device that inspects exhaust gas from a diesel vehicle and determines whether or not unauthorized diesel oil is used as fuel oil for a diesel vehicle,
A detection unit for detecting the amount of sulfur oxide in the exhaust gas of a diesel vehicle;
When the sulfur oxide amount is a predetermined amount or more, a determination unit that determines that unauthorized diesel oil is used as the diesel automobile fuel oil,
A light oil identification device, comprising: a display unit that displays a result of the determination. The light oil identification device according to claim 4, wherein the predetermined amount is 10 ppm. The light oil identification device according to claim 4, wherein the predetermined amount is 1 ppm. A diesel oil identification system that inspects exhaust gas from a diesel vehicle via a communication line and determines whether or not unauthorized diesel oil is used as fuel oil for the diesel vehicle,
One or more diesel oil identification devices that detect the amount of sulfur oxide in the exhaust gas of a diesel vehicle, send it to the management server, and receive a determination result as to whether or not unauthorized diesel oil is being used from the management server; ,
Receiving the sulfur oxide amount, based on the sulfur oxide amount, determine whether or not unauthorized light oil is used as the fuel oil of the diesel vehicle in the diesel vehicle, and transmit the determination result to the light oil identification device A management server,
A light oil identification system comprising a communication line connecting the light oil identification device and the management server.

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