JP2801663B2 - Refueling device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fuel supply device that determines an engine type based on an engine sound of a vehicle and supplies fuel oil suitable for the vehicle.

(Prior Art) There are two types of vehicles, a gasoline vehicle equipped with a gasoline engine and a diesel vehicle equipped with a diesel engine, and the type of fuel to be refueled differs depending on the type of engine.

For this reason, at the time of refueling, the oil type is determined based on the degree of contamination of the filler port, the smell of vapor, and the display of the oil type, but there has been a problem that the oil type is sometimes mistaken due to an error.

In order to solve such a problem, there has been proposed a method of detecting an electromagnetic wave due to discharge of a spark plug included in a gasoline-powered vehicle, or detecting a difference in vehicle vibration between a gasoline-powered vehicle and a diesel vehicle to determine an oil type. (JP-A-61-127498)
JP-A-61-81996).

(Problems to be Solved by the Invention) According to the former method, it is possible to detect without requiring contact with the vehicle body. The presence of electromagnetic waves has the disadvantage of causing detection errors, and the latter method requires the operation of bringing the vibration detection sensor into contact with the vehicle body, which is not only troublesome to operate, but also results in a gasoline engine and a diesel engine. Needs to be stored in advance as data, and a large-capacity storage means is required, which complicates the apparatus and increases the cost.

The present invention has been made in view of such a problem, and an object of the present invention is to eliminate the need for mounting a sensor on a vehicle body and to eliminate the need for acoustic data for each engine, And a fuel supply device for supplying fuel oil of an oil type suitable for the engine.

(Embodiment) Therefore, the details of the present invention will be described below based on an illustrated embodiment.

FIG. 1 shows an embodiment of a liquid supply device provided with an engine discriminating device according to the present invention, and reference numeral 1 in the drawing denotes an engine discriminating device characterized by the present invention.

FIG. 2 shows an embodiment of the above-mentioned engine discriminating apparatus. In the drawing, reference numerals 2, 3 and 4 denote microphones as acoustic-electric converting means for converting engine sounds into electric signals, respectively. A plurality of, in this embodiment, three, are arranged at positions where it is easy to collect sound from the engine of the vehicle at the time. Numeral 5 is majority decision synthesizing means for judging the difference between the signals output from the plurality of microphones 2, 3, and 4,
This is to select and output the signals of many sides. Reference numeral 6 denotes a fast Fourier transform unit as a spectrum analyzing unit, which performs Fourier transform on an input signal and separates it into a spectrum of a fundamental component and a harmonic component. 7 is a distributed wave extracting means for extracting a harmonic component from a spectrum.
Only the fourth and fifth harmonics are selected. Numeral 8 denotes a discriminating means for detecting the presence of the third to fifth harmonics, discriminating between a diesel car and a gasoline car, and outputting the discrimination result to the control devices 10 and 11, which will be described later.

Returning again to FIG. 1, reference numerals 10 and 11 in the figure denote control devices in which oil types to be refueled are registered in advance, and when the nozzle switches 12 and 13 are turned on, an engine type discriminating device is provided. Compared with the signal from 1, the fuel supply mechanism is operated to enable refueling when they match, and the alarm 14 is operated when they do not match.

Next, the operation of the thus configured apparatus will be described with reference to the flowchart of FIG.

When an automobile approaches the refueling device, engine sounds are converted into electrical signals by the microphones 2, 3, and 4. From these signals, a signal related to the engine sound is selected by the majority decision synthesizing means 5 and the fast Fourier transform means 6 is selected.
And is separated into a fundamental component and a harmonic component. From these signals, only the third, fourth and fifth harmonic components are selected by the extracting means 7 and input to the determining means 8.

As a result, as shown in FIG. 4 (a), it is determined that the vehicle is a diesel vehicle if the third, fourth, and fifth harmonic components are present with respect to the fundamental wave, and is a gasoline vehicle if it is not present. And outputs it to the control devices 10 and 11.

That is, in the engine sound of a diesel vehicle, the third and higher harmonics are independently present as shown in FIG. 4 (a), whereas that of a gasoline vehicle is shown in FIG. 4 (b). As shown in (2), white noise appears and harmonics cannot be identified.

Next, when the worker removes the nozzle 20 for light oil, the nozzle switch 12 is turned on (A), and the control device 10
Return (23) to zero (b). At this time, if the oil type signal from the engine type discriminating apparatus 1 is light oil which is the oil type of the removed nozzle 20 (C), the pump motor 24 is operated to perform oil supply (D). As a result, the light oil discharged from the pump 26 is discharged by the nozzle 20 via the flow meter 28, and at the same time, the pulses from the flow rate pulse transmitter 31 are integrated by the control device 10 and displayed as the refueling amount on the display 22. Is done. When a predetermined amount of refueling is completed and the nozzle 20 is returned to the original position and the nozzle switch 12 is turned off (g), the pump motor 24
Stops (h).

On the other hand, if the oil type signal from the engine type discriminating apparatus 1 is gasoline (e), the alarm 14 is activated to notify the operator that the oil type is different (f). When the nozzle switch 12 is turned off (i), the alarm 14 is stopped (nu).

When the gasoline nozzle 21 is removed, the nozzle switch 13
Becomes ON, and the control device 11 returns the indicator 23 to zero, confirms that the oil type signal from the engine type discrimination device 1 is gasoline, and operates the pump motor 25, as in the case of light oil. And refuel.

As a result, gasoline discharged from the pump 27 is discharged from the nozzle 21 via the flow meter 29, and at the same time, pulses from the flow rate pulse transmitter 32 are integrated by the control device 10 and displayed as the refueling amount on the hand display 23. Is done.

When another vehicle enters while refueling with one device, a new oil type signal is transmitted from the engine discriminating device 1 to the control devices 10 and 11, and if the oil type matches, the other oil type signal is used. The nozzle allows lubrication.

In this embodiment, the sound captured by the microphone is directly analyzed.
The recording may be cyclically recorded on a recording medium that can be recorded for a second, and when the engine sound suddenly decreases, it may be determined that the vehicle stops at the refueling point, and then the data in the storage medium may be analyzed.

(Effects of the Invention) As described above, the present invention includes a gasoline refueling means, a light oil refueling means, and an engine type discriminating apparatus, and a control device of each refueling means is turned on by a nozzle switch of each refueling means. In a lubricating device that receives a signal and determines an oil type based on a signal input from the engine type determining device, the engine type determining device determines a difference between signals input from a plurality of acoustic-electric conversion means, and Majority signal combining means for selecting and outputting a signal on the side, fast Fourier transform means for Fourier transforming a signal from the majority signal combiner to separate the spectrum into a fundamental wave component and a harmonic component, and input from the fast Fourier transform means. Distributed wave extracting means for extracting harmonic components from the extracted spectrum, and detecting the presence or absence of the third to fifth harmonics of the signal input from the distributed wave extracting means to de-multiplex the signal. Since it is equipped with a discriminating means for discriminating between a diesel car and a gasoline car and outputting a discrimination result, it is not necessary to detect weak electromagnetic waves or to attach a sensor to the vehicle body,
Eliminates the effects of noise such as engine noise from other vehicles in the vicinity, and reliably distinguish between gasoline and diesel vehicles without the need for storage means to store acoustic data for each type of engine. To supply the optimal fuel oil.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a fuel supply device to which the present invention is applied, FIG. 2 is a block diagram showing one embodiment of the present invention,
FIG. 3 is a flowchart showing the operation of the apparatus shown in FIG. 1, and FIGS. 4 (a) and 4 (b) are diagrams each showing an example of the spectrum analysis of the engine sound. 1 ... Engine type determination device 2, 3, 4 ... Microphone 12, 13 ... Nozzle switch 14 ... Alarm 22, 23 ... Display 24, 25 ... Pump motor 26, 27 ... Pump 28, 29 …… Flow meter 31, 32 …… Flow pulse transmitter

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F02B 77/08 G01M 15/00 G01H 17/00 B67D 5/08 B67D 5/32

Claims (1)

(57) [Claims] An engine type discriminating device includes a gasoline refueling device, a light oil refueling device, and an engine type discriminating device, wherein a control device of each of the refueling devices receives an ON signal from a nozzle switch of each refueling device, In the refueling system, which determines whether the vehicle is a diesel vehicle or a gasoline vehicle based on a signal input from the vehicle, and determines the type of fuel oil to be refueled, the engine type determination device receives input from a plurality of acoustic-electric conversion means. Majority combining means for discriminating signal differences and selecting and outputting a majority signal; fast Fourier transform for Fourier transforming a signal from the majority combining means to separate the spectrum into a fundamental wave component and a harmonic wave component Means, distributed wave extracting means for extracting a harmonic component from the spectrum inputted from the fast Fourier transform means, and third to fifth harmonics of the signal inputted from the means. And a discriminating means for discriminating whether the car is a diesel car or a gasoline car by detecting the presence or absence of the car and outputting a discrimination result.