WO2006038787A1

WO2006038787A1 - Method and device for measuring fuel

Info

Publication number: WO2006038787A1
Application number: PCT/LV2005/000012
Authority: WO
Inventors: Imants Keish
Original assignee: Imants Keish
Priority date: 2004-10-08
Filing date: 2005-10-07
Publication date: 2006-04-13
Also published as: LV13255B

Abstract

The invention refers to a method of fuel level measuring and registering. It is a system comprising at least two sensors in parallel connection mounted on the upper surface of the fuel tank and plunged into fuel. Sensors are located considering regularities (a1+a2<=L/3; a1+a2>=L/10; b1 +b2<=B/3). Each sensor consists of two mutually isolated and coaxially located surfaces. According to the fuel level in the tank space between surfaces can be freely fulfilled with fuel, therefore capacity between surfaces is depending on level in the tank. The capacity is being electrically measured every second, averaged and saved in the memory every minute. Gathered data can be analyzed and viewed later on the personal computer.

Description

METHOD AND DEVICE FOR MEASURING THE FUEL LEVEL DESCRIPTION OF THE INVENTION

The invention relates to the control and monitoring of the fuel level, which results in the determination of fuel consumption from the vehicle tank continuously during measurement.

Some IM techniques and devices for monitoring and recording fuel levels in vehicle tanks are known. One of such control and registration methods is the flow method, when the flow measurement provides a certain accuracy with a uniform fuel consumption, respectively, with a uniform fuel flow, and when the engine is operating in different speed modes, the flow rate can vary unevenly, which leads to an increase in inaccuracies during the process measurements.

The second known method of / 3 / monitoring and recording the level and fuel consumption from the tank is the use of a rheostat sensor, which is characterized by a definitely large measuring step (from 5 to 25 liters), which does not provide the necessary accuracy in determining the level and fuel consumption of the tank.

Third known technique / cm. LV patent 12854; application date 11/30/2000; Issue date 12/20/2002 / there is level and registration control from a capacitive sensor, which ensures the necessary accuracy on a standing vehicle. In practice, its application is found with the installation of one sensor in the fuel tank. The disadvantage of this technique is that all sharp changes in the fuel level are recorded, which is associated with a level fluctuation during movement and a different slope different from the horizontal position of the vehicle during movement, as well as with the design flaws of the sensor (through a calibrated hole, fuel slowly makes its way into measuring channel, but a large diameter hole allows fuel to enter / enter so quickly into the measuring space, which makes it possible to measure all fluctuations from a level wave; the same with This refers to the conclusion of fuel), as a result of which the picture of the actual level in the fuel tank is incorrect in relation to the actual level (volume) and it is impossible to judge a true analysis related to other parameters of the vehicle’s operation.

There are various designs / 3, 4, 5 / of electronic measuring transducers, among them are capacitive devices 151 that monitor processes at oil refineries. Theoretical Foundations of their Design set out in / 6 /. including calibration curves for "fluid level rise - capacity" and tips for calculating accuracy from the point of view of error theory. Many methods of analysis of technological processes in practice with examples are described in fundamental work III.

The purpose of the invention is to provide continuous and accurate determination and registration of the fuel level in the vehicle tank, providing the opportunity to truly judge the fuel consumption from the fuel tank, as well as to take into account and analyze fuel consumption in connection with other operating parameters on the vehicle.

To eliminate the previously mentioned drawbacks, a device and method for monitoring and recording the fuel level using a system of two sensors that are located in the fuel tank on one straight line symmetrically with respect to the geometric center of the fuel tank at a certain mutual distance and make it possible to minimize the effect of an uneven fuel level that comes from the swing and other factors or from the non-horizontal position (tilt) of the fuel tank, to the accuracy of the measured level (volume) opliva.

The invention according to the proposed method and device is as follows (see, respectively, the 1st and 7th claims):

- the proposed method for continuous monitoring and recording of the fuel level in the fuel tank, where the fuel level registration system is connected to the vehicle’s power supply circuit from a battery or other power source, while driving or standing with the engine running or idle, is characterized in that the fuel level is measured at predetermined time instants tк = tо + Δt ^• k, where tо is a given initial moment; k = 0, 1, 2, ..., n; Δt is a fixed step along the time axis, preferably Δt = lsec; p is any integer, moreover, the measurement is made using at least one pair of sensors - measuring transducers, which form a system and are fixedly mounted on the upper wall of the fuel tank, providing free access to the sensitive element of the measuring transducer through the bottom at the bottom of the fuel tank (technological level, ensuring the engine), and the sensitive elements of the transducers are located on one straight line that intersects the geometric center of the surface area of the fuel tank and can be located both on the longitudinal and transverse axis of symmetry, as well as at a certain angle relative to the axes of symmetry, but always at the same opposite distance from the center, and the distance between the sensors is not more than 1/3 and not less than 1 / 10 of size the longitudinal size (L) of the fuel tank in the direction of movement of the vehicle;

- the proposed device for implementing the method, comprising a system of at least two sensors - measuring transducers, for example, a pair of capacitive measuring transducers, an analog-to-digital converter (A / D) and a microprocessor for mathematically processing the measurements and calculating the actual fuel level and their accumulation in a memory block, characterized in that the measuring unit contains at least one pair of sensors that are fixedly mounted on the upper wall of the fuel tank, providing freedom bottom access of the fuel to the sensitive elements through the lower part of the sensor at the bottom of the fuel tank, and the sensitive elements of the sensors are placed at the same distance from the geometric center of the tank on the axis of symmetry of the tank, which intersects the geometric center of the fuel tank and is directed at a certain angle relative to the direction of vehicle , and the distance between the symmetrically located sensors in each pair is not more than 1/3 and not less than 1/10 of the tank size in the direction of movement of the trans Tailor tools.

Different versions of the method and device are offered (see, respectively, formula points from the 2nd to the 6th and from the 8th to the 12th):

- the readings of paired sensors at each moment of measurement are entered into the memory of the microprocessor, which calculates the current value of the fuel level;

- fuel level measurements, fixed at different points in time, averaged over a predetermined time interval ΔТ and entered into the microprocessor memory as the resulting value of the level at time t _k = to + k * (ΔTy2, where tо is a given initial moment; Ic = O , 1, 2, ..., n, and the time interval ΔТ is not less than 1 min, but in order to save the microprocessor memory there may be something else;

- additionally carry out statistical signal processing by methods of processing digital or analog signals and the results obtained (for example, arithmetic mean value, mean square deviation from arithmetic mean, measurement coefficient of variation, confidence interval of the arithmetic mean with a confidence probability of 95% or 98%) is entered into the microprocessor memory and saves a certain time until it is necessary to read the accumulated information, analyze and / or output graphically or numerically from wander on the display, and the time of accumulation of information is possible choose from the length of the interval ΔТ to the time of the necessary continuous operation of the system (for example, one hour, shift, day, month, etc.);

- using a computer program, the screen displays the actual value of the fuel level in the fuel tank, which is accumulated in the microprocessor memory at all time instants t _k = to + k- (ΔTУ2, where tо is the given initial moment; k = 0, 1, 2, ...;

- all the accumulated information is given in the form of a diagram, where it depicts the actual fuel consumption depending on time - during the accumulation of information in the form of diagrams it is displayed in different forms, the actual value of the consumption in time;

- the device provides the ability to measure at predetermined points in time t _k = t ₀ + Δt ^• k, where k = 0, 1, ..., p; Δt is a fixed step along the time axis, preferably Δt = lcek, and the ability to convert the measurements obtained in digital form, average and store in the microprocessor's memory;

- the device provides an averaging of the obtained fuel level readings for a given time interval ΔТ, their statistical processing and obtaining the average fuel level value, which represents the resulting fuel level value at time t _k ⁼ to + k- (ΔTy2, where tо is the given initial moment; k = 0, 1, 2, ..., n, and the time interval ΔТ is at least 1 min, as well as entering the results and storing it in the microprocessor's memory;

- the device provides input and storage in the microprocessor memory for the necessary long time, which can be in the range from ΔТ until the end of the need for continuous monitoring (for example, one hour, shift, day, month, etc.), the resulting fuel value obtained in time instants t _k = to + k- (ΔTK2, and also provides reading and output of indications on the screen of a personal computer in the form of a graph using computer programs;

- the device provides the output filled in the memory of the microprocessor of information about the actual fuel level in the tank of the vehicle and its image on the computer display in the form of a diagram;

- the device provides the ability to determine and analyze the actual fuel consumption from the fuel tank and / or falsification of the flow according to the diagram obtained about the actual change in the fuel level in the vehicle’s fuel tank, and also provides the ability to analyze other parameters of the engine’s operation both in operating conditions and in the case of engine stopped or engine idling (e.g. RPM, rated exhaust power from the box, engine temperature, speed, parking time, distance traveled) and provides the ability to determine fuel consumption for each engine operation with an accuracy of 1 liter for fuel tanks up to 1000 liters.

The objective of the invention is achieved (Fig. 1) in that at least a system of two sensors is installed in the vehicle’s tank (1), measuring transducers, for example, of a capacitive type, forming a pair (2) of sensors, fixedly fixed to the upper wall of the fuel tank on one straight line passing through the geometric center of the tank, symmetrically with respect to the geometric center of the tank

and the distance between the sensors of this pair (I = ai + ag); b = bi + bg), characterized by their distances from the axis of symmetry of the tank longitudinally or transversely to the movement of transport, not more than 1/3 of the size B of the tank, which is directed transversely to the movement of transport. The distance between the sensors with respect to the transverse axis of symmetry of the tank in the direction of transport, not more than 1/3 of size L and not less than 1/10 of the same size L in the direction of transport. These sensors are placed on a line going through the geometric center of the upper plane of the tank at an angle, while maintaining symmetry from the center. Their sensitive elements are located on the technologically controlled lower level of the fuel tank which provides free access of fuel to their sensitive elements through the lower part. Capacitive sensors in this system are connected in parallel to the wire (4), which provides instant fixation of the fuel level parameters and their input through the wire (5) into the microprocessor memory (6), for example, every second. In the microprocessor for, for example, minutes, the received signals are summed up and divided by the number of received signals, as a result, the average fuel level for this period of time is obtained. Then, via wire (7), these signals are input into the information storage block (8), where this information is accumulated for a long time, which is determined by the need and the memory storage capacity of the block. From this block it can be transferred to a personal computer and using a special computer program to display on the screen in the form of diagrams and tables for each sensor separately, as well as the averaged parameters of the sensor system or the engine as a whole. Based on the obtained diagram on the actual change in the fuel level in the vehicle’s fuel tank, it is possible to determine and analyze the actual fuel consumption from the fuel tank and / or flow rate falsification (drain), as well as analyze other parameters of the engine operation both in operating conditions and in the case of a muffled engine or engine idling (for example, the number of revolutions, nominal power take-off from the box, engine temperature, driving speed, parking time, distance traveled) and determine the fuel consumption for each engine operation with an accuracy of 1 liter for fuel tanks up to 1000 liters.

Figure 2 shows some of the possible fuel level positions in the tank. Accuracy at any position of the fuel level in the tank (a or b) or the position of the tank itself (c) is ensured by placing the sensors according to the previously described method and accumulating averaged values of actual signals, which corresponds to the average fuel level between the sensors every second, which is averaged every minute in the microprocessor, as a result, we get the actual level for the period ΔТ. The average value is obtained as the average sum of the readings of both capacitive sensors, which for any amount of fuel and its level at a certain point in time, regardless of the fluctuations of the fuel in the tank, is on average a fairly stable value. This definition refers to a given amount of fuel in a vehicle’s tank, as in the case of its movement and in the parking lot.

One operational state of the capacitive sensor - measuring transducer used in the proposed device design, in the fuel tank is shown in Fig.Z, where the sensor cap is attached to the upper wall of the tank (9) with bolts, to which, for example, the outer shell is soldered (10) ) a sensor that rests on the lower insulator (13), which, in turn, rests on the bottom of the tank, and the inner shell 11 (tube) rests on both the upper part and the lower part of the insulator (13), electrically insulating both parts of the sensor . Fuel through the lower insulator freely enters the space of the measuring channel (14) and also freely enters the tank back. Air freely enters and exits this space through openings; the number and diameter are selected as appropriate on the top of both tubes. The signal wire (15), which connects the sensor to the microprocessor, is connected to the inner tube (11) on the upper part.

The proposed method can be improved, instead of one pair of sensors using several pair systems with different distances (a'i = a'2; b'i = b'g) with respect to the geometric center of the tank, averaging the readings of all sensors, as described above.

An example implementation of the invention

Using the conditions that are described in the claims for measuring the level of fuel to base the effectiveness of the invention, comparative experimental measurements using the proposed method and device, as well as only one capacitive sensor. Analysis of the results confirms that the objective of the invention has been achieved.

Brief description of the measurement process using the proposed method and device

When measuring the fuel level in the vehicle tank using capacitive sensors, the change in fuel level is measured by indicating the change in capacity. Since capacitance as a physical quantity is difficult to directly measure with microprocessor devices, a capacitive signal with a specially designed oscillator (approximately SA555 or another similar type) was converted to the corresponding frequency. The obtained frequency was measured, processed and stored in the memory of the recorder. After certain periods of time, the accumulated data in digital form was transferred to a personal computer to obtain statistical or graphical information. The frequency generator worked in an asymmetric multivibrator mode and the frequency of the output signal was calculated by the formula:

/ = o.b9z- (R, + * 2 - R ₂ ) - c _s

Since in this formula the only variable is the capacity from the level sensor C _g , it can be determined that the frequency at the output of the frequency generator is a function of only one single argument - the capacity of the fuel level sensor. The main task of the registrar is to cyclically measure the parameters of the fuel level sensor in the tank and signals from other sensors, as well as their accumulation in the memory of the registrar and transfer to a stationary computer for processing and display. At the first stage of determining the fuel level, the signal frequency from the frequency generator was measured according to the following formula:

^J (A - O ^' where f is the signal frequency, Δt is the time interval, n is the number of pulses in the time interval Δt. According to the calibration curve L _t - f _{g of the} fuel tank, where L _t is the fuel level, f _g is the generator frequency, knowing the output frequency of the frequency generator, the fuel level in the tank is determined, taking into account that the graph of the calibration curve was obtained, filling the vehicle’s fuel tank with a step of 10 liters and reading the corresponding frequency in a table to determine the intermediate level in interpolation was performed at any point in the fuel tank. Measurement of the fuel level in the tank over time was carried out cyclically with a step of lsec, during each current minute determining the arithmetic average level of fuel in the tank according to the formula:

"^+1"" ⁺ 60 'where n = 0, 1, 2, ..., 59, and after each minute the obtained fuel level in the tank was entered into the memory of the recorder, for example, EEPROM. At the same time as the fuel level in the tank in The recorder’s memory also saved such vehicle motion parameters as the distance traveled for a minute, speed parameters, engine speed and other recorded data.Connecting the recorder to a personal computer, data through the RS232 interface from the recorder’s memory was charged into the personal computer’s memory for processing and expression, as well as for changing the modes and parameters of registration (reinstallation).

An example of practical work, for registration I use two capacitive sensors described in paragraphs of formulas 7 and 8, the registration device,

- From a fuel tank, in which there were 332 liters of fuel, 40 liters of fuel were drained using a calibrated tank filling capacity of 10 liters, and the recorder recorded the remainder of 292 liters. The next day, the MA35432 drove a distance of 220km with an average fuel consumption of 31.1 liters per 100km. The registrar showed the remainder of 222 liters in the fuel tank. The total consumption was 70 liters of fuel. After reading this reading with measuring dishes, an additional 20 liters of fuel were poured into the fuel tank. When reading the registered level, 242 liters of fuel in the tank were determined. The vehicle again went on the same route and the registrar recorded the total fuel consumption of 71 liters of fuel, showing the remaining fuel in the tank 171 liters, after which 20 liters of fuel were poured into the fuel tank using a calibrated tank and the recorder recorded the level in the fuel tank 191 liters. After reading the fuel level by the recorder, the remaining fuel from the tank was completely drained and, using a calibrated tank, the merged amount was measured, which amounted to 191 liters.

- The same car in the next stage of control collected 10 checks of gas stations and only in 3 cases the registrar readings per 1 liter were less than on the check. All the readings of the check and the registrar in the Statoil gas station network completely coincided. The readings of the check in the Latvijas Nafta gas station network were 1 liter less than the readings of the registrar. This was explained by the fact that from the network of gas stations “Latvijas Nafta” the fuel was very foaming, as a result of which errors appeared. After 10 times of refueling and operation, the registrar recorded 57 liters of residue in the tank. By draining the remaining fuel and measuring with calibrated dishes, a volume of 57 liters of fuel was detected.

Chart 1. Comparative fuel level measurement curve in the vehicle tank

For example, the results are shown graphically in Table 1 using a measuring device with one capacitive fuel level sensor and a device with two sensors in the fuel tank of the vehicle, as described in the claims (paragraphs 7 and 8). The curves shown in graph 1 clearly show the differences between the proposed measurement method and the measurement method using only one sensor, which allows us to judge the operational efficiency in practice with at least two sensors (a pair) at the same time and draw conclusions about the feasibility of widespread implementation of the invention.

In table 1 and graph 1 it can be seen that the results when measuring the same fuel volume on the same vehicle when using the method of measuring the fuel level in the tank by two different methods (with one and two capacitive sensors) practically coincide with uniform movement vehicle, and when changing its speed (both in case of acceleration and braking), as well as if the vehicle is in a different position than horizontal, the results begin to differ. This even brighter and more clearly reflects the advantage of using the proposed method and a measuring device with two sensors for measuring the fuel level in the vehicle tank compared to a similar method and device, where the same indicators were recorded with only one sensor.

All of the above results are subject. that the objective of the invention has been achieved.

Sources of information used:

1. Electronic Diesel Control EDC. BOSCH, 2001, p. 130.

2. V.I. Anokhin. Domestic cars. M., Mechanical Engineering, 1968, p. 412.

3. F. Meijds. Electronic measuring instruments and measurement methods. M., Mir, 1990 (section 4.4 “Capacitive converters))).

4. D.I. Ageikin, E. N. Kostina, N. N. Kuznetsova. Sensors of control and regulation (reference materials). M., Mechanical Engineering, 1965 (Ch. Z "Level sensors" of section III)

5. Automation, instruments for monitoring and regulating the production processes of the oil and petrochemical industries. M., Nedra, 1964 (Book 2 “Samples” “Capacity Levels” of Section III “Samples for Level Measurement)))

6. Electrical measurements of non-electrical quantities. Leningrad, Energy, 1975, p. 447.

7. D. Himmelblau. Analysis of processes by statistical methods. M., Mir, 1973, p. 947.

Table 1. Comparative table of measurements of the fuel level in the vehicle tank

Fuel level in

Non Time, tank, if sensors s / n min one two

1 1 150 152

2 2 150 147

3 3 150 150

4 4 150 150

5 5 150 150

6 6 150 150

7 7 150 150

8 8 150 150

9 9 150 150

10 10 150 150

11 11 150 150

12 12 150 150

13 13 149 144

14 14 149 152

15 15 149 149

16 16 149 149

17 17 149 149

18 18 148 148

19 19 148 139

20 20 148 154

21 21 148 148

22 22 147 140

23 23 147 150

24 24 147 143

25 25 147 152

26 26 147 146

27 27 147 149

28 28 146 146

29 29 146 146

30 30 146 146

31 31 146 146

32 32 146 146

33 33 146 146

34 34 146 146

35 35 146 146

36 36 146 146

37 37 146 146

38 38 146 146

39 39 146 146 0 40 146 146 1 41 146 146 2 42 145 141 3 43 145 148 fuel level in

Non Time, tank, if sensors s / n min one two

44 44 145 138

45 45 144 149

46 46 144 143

47 47 144 148

48 48 143 135

49 49 143 145

50 50 143 141

51 51 142 147

52 52 142 141

53 53 142 144

54 54 142 141

55 55 141 141

56 56 141 141

57 57 141 141

58 58 141 141

59 59 141 141

60 60 141 141

61 ^• 61 141 145

62 62 140 139

63 63 140 135

64 64 140 151

65 65 140 136

66 66 140 140

67 67 140 139

68 68 140 139

69 69 140 145

70 70 139 136

71 71 139 141

72 72 139 134

73 73 139 142

74 74 138 136

75 75 138 139

76 76 138 137

77 77 138 138

78 78 138 138

79 79 138 138 0 80 138 138 1 81 138 138

82 82 138 138 3 83 138 138 4 84 138 138 5 85 138 138 6 86 138 138 7 87 138 141 8 88 137 133 9 89 137 143 0 90 137 139 1 91 137 137 2 92 137 137 Fuel level β

Non Time, tank, if sensors s / n min one two

93 93 136 137

94 94 136 136

95 95 136 132

96 96 135 141

97 97 135 132

98 98 135 137

99 99 135 131

100 100 134 134

101 101 134 134

102 102 134 134

103 103 133 134

104 104 133 137

105 105 133 131

106 106 133 136

107 107 132 133

108 108 132 132

109 109 132 132

110 1 10 132 132

111 1 11 132 132

112 1 12 132 132

113 113 132 132

114 114 132 132

115 115 132 132

116 116 132 132

117 117 132 129

118 118 131 133

119 119 131 126

120 120 131 132

Claims

CLAIM

1. The method of continuous monitoring and registration of the fuel level in the fuel tank, where the fuel level registration system is connected to the vehicle’s power supply circuit from a battery or other power source, while driving or stationary when the engine is running or not, characterized in that the fuel level is measured at predetermined points in time tk = tо + Δt ^• k, where t ₀ is the given initial moment; k = 0, 1, 2, ..., n; Δt is a fixed step along the time axis, preferably Δt = lsec; p is any integer, moreover, the measurement is made using at least one pair of sensors - measuring transducers, which form a system and are fixedly mounted on the upper wall of the fuel tank, providing free access to the sensitive element of the measuring transducer through the bottom at the bottom of the fuel tank (technological level ensuring the operation of the engine), and the sensitive elements of the transducers are located on one straight line that intersects the geometric center at The surface area of the fuel tank can be located both on the longitudinal and transverse axis of symmetry, as well as at a certain angle relative to the axis of symmetry, but always at the same opposite distance from the center, and the distance between the sensors is not more than 1/3 and not less than 1 / 10 of the longitudinal dimension (L) of the fuel tank in the direction of movement of the vehicle.

2. The method according to paragraph 1, in which the readings of the paired sensors at each moment of measurement are entered into the memory of the microprocessor, which calculates the current value of the fuel level.

3. The method according to paragraph 2, where many measurements of the fuel level, fixed at different points in time, are averaged over a predetermined time interval ΔТ and entered into the microprocessor memory as the resulting level value at the time tk ⁼ to + k- (ΔTy2, where tо - a given initial moment; k = 0, 1, 2, ..., n, and the time interval ΔТ is not less than 1 min, but in order to save microprocessor memory there may be something else.

4. The method according to paragraph 3, where additionally carry out statistical signal processing by methods of processing digital or analog signals and the results obtained (for example, arithmetic mean, standard deviation from the arithmetic mean, coefficient of variation of measurements, the confidence interval of the arithmetic mean with confidence with a probability of 95% or 98%) it enters the microprocessor's memory and saves a certain time until it is necessary to read the accumulated information, analyze and / or display it graphically or numerically on the display, and it is possible to choose the time of information accumulation in the range from the interval length ΔТ to the time necessary system operation (for example, one hour. shift, day, month, etc.).

5. The method in paragraph 4, where using a computer program on the screen displays the actual value of the fuel level in the fuel tank, which is accumulated in the microprocessor memory at all time instants t _k = to + k * (ΔTy2, where tо is the given initial moment; k = 0, 1, 2, ....

6. The method according to paragraph 5, where all the accumulated information is displayed in the form of a diagram showing the actual fuel consumption depending on time.

7. A device for implementing the method according to any preceding paragraph, comprising a system of at least two sensors - measuring transducers, for example, a pair of capacitive measuring transducers, an analog-to-digital converter (A / D) and a microprocessor for mathematically processing the measurements and calculating the actual fuel level and their accumulation in the memory unit, characterized in that the measuring unit contains at least one pair of sensors that are fixedly fixed on the upper wall of the fuel tank, providing free access of fuel to the sensitive elements through the lower part of the sensor at the bottom of the fuel tank, and the sensitive elements of the sensors are placed at the opposite equal distance from the geometric center of the tank on the axis of symmetry of the tank, which intersects the geometric center of the fuel tank and is directed at a certain angle relative to the direction of movement of the vehicle means, and the distance between symmetrically located sensors in each pair is not more than 1/3 and not less than 1/10 of the size of the tank in the direction Research Institute of the vehicle.

8. The device according to paragraph 7, which provides the ability to measure at predetermined times ti _< = tо + Δt ^• k, where k = 0, 1, ..., p; Δt is a fixed step along the time axis, preferably Δt = lcek, and the ability to convert the measurements obtained in digital form, to average and store in the microprocessor's memory.

9. The device according to paragraph 8, which provides averaging of the obtained fuel level readings for a given time interval ΔТ, their statistical processing and obtaining the average fuel level value, which represents the resulting fuel level value at time t _k = to + k- (ΔT> 2 where tо - set initial moment; k = 0, 1, 2, ..., n, and the time interval ΔТ is at least 1 min, as well as entering the results and storing it in the microprocessor's memory.

10. The device according to paragraph 9, which provides the input and storage in the microprocessor memory of the necessary long time, which can be in the range from ΔТ until the end of the need for continuous monitoring (for example, one hour, shift, day, month, etc.) resulting the amount of fuel, which was obtained at time t _k = to + k- (ΔTy2, and also provides reading and output on the screen of a personal computer in the form of a graph using computer programs.

11. The device according to paragraph 10, which provides output stored in the microprocessor memory information about the actual fuel level in the tank of the vehicle and its image on the computer display in the form of a diagram.

12. The device according to paragraph 11, which provides the ability to determine and analyze the actual fuel consumption from the fuel tank and / or falsification of the flow according to the diagram obtained about the actual change in the fuel level in the vehicle’s fuel tank, as well as the ability to analyze other engine operation parameters as in operating conditions, and in the case of a muffled engine or engine idling (for example, speed, rated power take-off from the box, engine temperature of Tell, speed, duration, proedennoe distance) and enables to determine the fuel consumption for each engine operation to within 1 liter of fuel tanks to 1000 liters,