WO2019151614A1

WO2019151614A1 - Fuel atomization module depending on real-time vehicle state and fuel atomization method using same

Info

Publication number: WO2019151614A1
Application number: PCT/KR2018/012819
Authority: WO
Inventors: 최고운; 강선희; 최고동
Original assignee: 최고운; 강선희; 최고동
Priority date: 2018-02-05
Filing date: 2018-10-26
Publication date: 2019-08-08
Also published as: KR102030166B1; KR20190095634A

Abstract

The present invention relates to a fuel atomization module depending on a real-time vehicle state and a fuel atomization method using same, which predict the present and the future to optimize fuel atomization. Therefore, the fuel atomization module depending on a real-time vehicle state of the present invention comprises: a rapid acceleration sensor for measuring the degree of rapid acceleration of a vehicle in real time; a rapid braking sensor for measuring the degree of rapid braking of the vehicle in real time; a piezo sensor for measuring a flow state of a fuel line in real time; a control unit for deciding the degree of fuel atomization on the basis of a real-time measured value received from the rapid acceleration sensor, the rapid braking sensor, and the piezo sensor, and generating an output signal according to the decided degree; and a fuel atomization device for applying a sine wave to a fuel in response to the output signal of the control unit.

Description

Fuel atomization module according to real time vehicle status and fuel atomization method using same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency application type fuel atomization apparatus of an internal combustion engine that obtains an output by burning fuel such as gasoline or diesel.

Efforts are constantly being made to reduce the fuel used in oil combustion devices such as automobiles, prime movers or boilers.

In particular, in the case of a vehicle, there is a method of reducing fuel by atomizing fuel to improve air-fuel ratio. When the fuel is atomized, the size of the fuel particles is reduced and the amount of oxygen molecules bonded to the fuel molecules is increased. Accordingly, complete combustion is possible, thereby improving fuel economy. However, fuel atomization also has the side effect of high energy consumption.

In recent years, the technology which adjusts the atomization degree of fuel according to the flow volume of fuel, or the atomization degree of fuel according to a vehicle speed is interposed.

In this case, however, the moment the controller receives its sensing value from the flow sensor or speed sensor is already the flow rate and speed of the past. Therefore, simply adjusting the atomization of the fuel according to the speed or flow rate generated in the past, it cannot be precise control, it is difficult to optimize the engine efficiency.

In addition, a lot of fuel is required during rapid acceleration or sudden braking, in which case simply controlling the degree of fuel atomization with speed or flow rate, the efficiency of the engine cannot be optimized.

It is an object of the present invention to provide a fuel atomization module and a fuel atomization method using the same according to a real-time vehicle state to grasp a vehicle state in real time and predict the fuel in advance.

Another object of the present invention is to provide a fuel atomization module and a fuel atomization method using the same according to a real-time vehicle state, by determining whether braking and rapid acceleration of a vehicle can be controlled.

Accordingly, the fuel atomization module according to the real-time vehicle state of the present invention includes a rapid acceleration sensor, a rapid braking sensor, a piezo sensor, a control unit, and a fuel atomization device.

The rapid acceleration sensor measures the rapid acceleration degree of the fuel vehicle in real time. The sudden braking sensor measures the degree of sudden braking of the vehicle in real time. Piezo sensors measure the flow of fuel lines in real time. The controller determines the atomization degree of the fuel based on the real-time measurement values received from the rapid acceleration sensor, the rapid braking sensor, and the piezo sensor, and generates an output signal accordingly. The fuel atomization device applies a sine wave to the fuel in accordance with the output signal of the controller.

The rapid acceleration sensor may measure the rotational acceleration of the accelerator of the vehicle, and the rapid braking sensor may measure the rotational acceleration of the brake of the vehicle.

The controller divides the real-time measurement value received from the piezo sensor into sampling interval units, compares the measured value in the current sampling interval with the measured value in the past sampling interval before the current sampling interval, and immediately after the current sampling interval. It is possible to predict the measured value in the future sampling interval of and to determine the required degree of atomization of the fuel based on the predicted measured value.

In this case, the controller may include: a difference between the measured value in the first past sampling section immediately before the current sampling section and the measured value in the second past sampling section immediately before the first past sampling section, and the first past sampling. By comparing the difference between the measured value in the interval and the measured value in the current sampling interval, an output signal can be generated by predicting the measured value in the future sampling interval.

In addition, the fuel atomization device includes: a sinusoidal amplifier for amplifying and outputting a sine wave corresponding to the output signal of the control unit; And a sine wave applicator configured to transfer the sine wave output from the sine wave amplifier to the fuel to atomize the fuel.

The fuel atomization method of the fuel atomization module according to another aspect of the present invention includes a step of receiving, by the controller, signals about the degree of rapid start and the degree of sudden braking from the rapid acceleration sensor and the rapid braking sensor. The control unit receives a signal for the state of the flow rate from the piezo sensor. And determining the output signal according to the received braking degree, sudden oscillation degree, and flow rate. Outputting and amplifying a sine wave according to the output signal. Delivering the amplified sine wave to a flow rate supplied to an engine to atomize fuel.

In this case, the signal for the flow state is between the flow state measurement value in the first past sampling section immediately before the current sampling section and the flow state measurement value in the second past sampling section immediately before the first past sampling section. The difference between the flow state measurement value in the first past sampling section and the flow state measurement value in the current sampling section may be generated by predicting the measurement value of the future sampling section.

The rapid acceleration degree signal may correspond to a value of measuring rotational acceleration of the accelerator of the vehicle, and the rapid braking degree signal may correspond to a value of measuring the rotational acceleration of the brake of the vehicle.

According to the present invention, the optimum fuel atomization is achieved by determining the atomization degree of the fuel by combining the current rapid acceleration and rapid braking sensing value with the future piezo sensing value, thereby improving fuel efficiency.

1 is a conceptual diagram of a fuel atomization module according to a real-time vehicle state according to an embodiment of the present invention.

Figure 2 is a graph showing a method for obtaining a piezo sensing value in the present invention.

3 is a flow chart of a fuel atomization method according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram of a fuel atomization module 100 according to a real-time vehicle state according to an embodiment of the present invention.

As shown in FIG. 1, the fuel atomization module 100 according to a real-time vehicle state according to a preferred embodiment of the present invention includes a rapid acceleration sensor 10, a rapid braking sensor 20, a piezo sensor 30, And a control unit 40 and a fuel atomization device 50.

The rapid acceleration sensor 10 measures the degree of rapid acceleration of the vehicle. The rapid braking sensor 20 measures the degree of rapid braking. The piezo sensor 30 measures the flow state of the fuel line 5 in real time. The controller 40 drives the fuel atomization device 50 based on the measurement values measured from the piezo sensor 30, the rapid braking sensor 20, and the rapid acceleration sensor 10. The fuel atomization device 50 applies a sine wave to the fuel line 5 so as to atomize the fuel in accordance with the output signal of the controller 40.

According to the present invention, in the case of rapid acceleration and rapid braking, the required amount of fuel is further increased, and thus the air-fuel ratio is rapidly lowered. In order to reduce the consumption of fuel generated at this time, it is necessary to supply more energy for atomization of the fuel.

The rapid acceleration sensor 10 may measure the rotational acceleration of the accelerator 1 of the vehicle, and the rapid braking sensor 20 may measure the rotational acceleration of the brake 2 of the vehicle. Accordingly, when the accelerator 1 and the brake 2 are urgently pressed, the acceleration of rotation of the accelerator 1 and the brake 2 is accelerated. According to the present invention, the atomization degree of the fuel can be adjusted according to the rapid acceleration and the braking degree regardless of the speed of the vehicle.

Conventionally, by simply changing the frequency of the high frequency in accordance with the change in the rotational speed to inject the fuel corresponding to the speed, in the case of the present invention is to accelerate the fuel atomization compared to the energy required in the case of rapid acceleration, rapid braking.

Meanwhile, the present invention further includes a piezo sensor 30. The piezo sensor 30 is attached to the fuel line 5 to determine the flow rate of the fuel passing through the fuel line 5. In this case, the flow rate state of the fuel includes vibration degree and fuel amount in the fuel flow. The value transmitted to the piezo sensor 30 is changed according to the flow rate state, and the piezo sensor 30 sends an output signal in response to the value.

When the fuel flow state is large, vibration, flow velocity, turbulence, or flow rate increase, the measurement value of the piezo sensor 30 increases, and thus, atomization of the fuel is further required. On the contrary, when the fuel flow state is low in vibration, the flow rate is in a static state, the flow rate is low, or the flow rate is low, the measurement value of the piezo sensor 30 is lowered, thus requiring less atomization of fuel. Done.

In this case, the control unit 40 divides the real-time measurement value received from the piezo sensor 30 in units of sampling intervals, the measured value in the current sampling interval, and the measured value in the past sampling interval before the current sampling interval. By comparing this, it is possible to predict the atomization degree of the fuel required in the future sampling section immediately after the current sampling section, and transmit it to the fuel atomization device 50 as part of the output signal.

Accordingly, it is possible to predict the future fuel condition in advance according to the current and past fuel flow conditions, and to appropriately atomize the fuel in real time accordingly.

Therefore, the control unit generates an output signal by combining the measured value of the real-time sudden braking sensor, the measured value of the real-time rapid acceleration sensor, and the measured value predicted in the future sampling interval from the piezo sensor.

A process of predicting a future fuel state by using the piezo sensor value in the controller will be described in more detail with reference to FIG. 2 along with FIG. 1.

The piezo sensor 30 continuously measures the fuel flow state measurement value reaching the piezo sensor 30 per unit time (for convenience, referred to as a "sampling section"). The measured value obtained in the current sampling period DELTA t is called the current measured value c. The measured value obtained in the sampling section Δ (t-1) immediately before the current sampling section is called the first past measured value b. The measured value obtained in the sampling section (Δ (t-2)) immediately before the first past measured value is referred to as the second past measured value a. The value predicted in the future sampling interval Δ (t + 1) immediately after the current sampling interval is called a future prediction value d. In this case, the measured value in each sampling section can be calculated | required as the average value in a sampling section.

The control unit 40 determines the difference cb between the current measured value c in the current sampling interval and the first past measured value b in the first past sampling interval (this is referred to as a "current difference value"). Obtain

In addition, the control part 40 calls the difference ba (the past difference value) between the 1st past measured value b per 1st sampling interval, and the 2nd past measured value a per 2nd sampling interval. )

Thereafter, the future prediction value is predicted according to the ratio of the present difference value c-b and the past difference value b-a, and the degree of atomization of the fuel is determined according to the future prediction value.

If the present difference value / historical difference value (cb) / (ba) is greater than 1, it is likely that the future prediction value will become even larger, in which case the fuel atomization device 50 signals for fuel atomization. Increase the strength of the.

On the contrary, if the present difference value / historical difference value ((cb) / (ba)) is smaller than 1, the future prediction value is more likely to be smaller, in which case, the fuel atomization device 50 is used for fuel atomization. Try to slow down the signal strength.

In this case, it is preferable that the time of the first past sampling section, the time of the second past sampling section, and the time of the current sampling section are all the same.

The values of the rapid braking sensor 20 and the rapid acceleration sensor 10 are to grasp the current state and to control the fuel atomization degree. In the case of the piezo sensor 30, the degree of fuel atomization is controlled by predicting a future state.

Therefore, the controller 40 combines the measured value of the sudden braking sensor 20, the measured value of the rapid acceleration sensor 10, and the future predicted value calculated from the measured value of the piezo sensor 30, and transmits the signal to the fuel. You can adjust the size.

For example, the weight of the signal value corresponding to the measured value of the sudden braking sensor 20 may be set to 40%, and the weight of the sudden braking sensor 20 and the signal value corresponding to the future prediction value may be set to 30%, respectively. .

The weight of the signal value is adjustable according to the state of the vehicle, the type of engine, and the type of fuel.

The fuel atomization device 50 applies a sine wave to the fuel in accordance with a signal from the controller 40. The degree of fuel atomization varies according to the magnitude of the sine wave signal.

The fuel atomization device 50 may include a sine wave amplifier 52 and a sine wave applicator 54.

The sine wave amplifier 52 amplifies and outputs a sine wave corresponding to the output signal of the controller 40. The sine wave applicator 54 delivers a sine wave output from the sine wave amplifier 52 to the fuel to atomize the fuel. The fuel atomization device 50 will be described in more detail. First, the values transmitted from the control unit 40 generate triangular waves. In this case, each measured value may be a pulse signal, and the control unit 40 may receive the pulse signal and generate a triangular wave. It is a technique that can be easily implemented by those skilled in the art to generate a triangular wave by a program by inputting a square wave pulse.

The sine wave amplifier 52 functions to shape a triangular wave generated by the control unit 40 and convert it into a high frequency sine wave of about 200 Hz to 8 kHz. As the period of the pulse signal output from the control unit 40 decreases (the frequency increases), the frequency of the sine wave output from the sine wave amplifier 52 increases.

If the triangular wave is output from the controller 40, since the triangular wave is a small power signal having a small current, power amplification must be performed in order to apply sufficient energy to the fuel. In this case, the sinusoidal amplifier 52 takes charge.

The sine wave applicator 54 applies the + sine wave and the − sine wave output from the sine wave amplifier 52 to the fuel line 5 through which the fuel flows. In this case, it can be applied by the coil 56 wound on the fuel line.

3 is a flow chart illustrating a fuel atomization method in another aspect of the present invention. As shown in Figure 1 and 3, the fuel atomization method of the present invention, step (S100) to measure the rapid acceleration value / the rapid braking value from the rapid acceleration sensor / sudden braking sensor. In addition, a piezo value is measured from the piezo sensor (S200).

Subsequently, the controller generates a rapid acceleration signal, a signal for rapid braking information, rapid braking information, and a rapid braking signal, from the rapid acceleration sensor 10 and the rapid braking sensor 20 (S300). In addition, the control unit receives a piezo value from the piezo sensor 30 (S400) and calculates a future piezo signal through the piezo value (S500).

Thereafter, determining the output signal by combining the received rapid acceleration signal, the rapid braking signal, and the piezo signal (S700), outputting and amplifying a sine wave according to the output signal (S700), and the amplified sine wave. It is delivered to the flow rate supplied to the engine to atomize the fuel (S800).

In this case, the controller 40 may adjust the magnitude of the signal transmitted to the fuel by combining the values of the rapid braking sensor 20, the rapid acceleration sensor 10, and the piezo sensor 30.

For example, the weight of the signal value received from the sudden braking sensor 20 may be set to 40%, and the weight of the signal value received from the sudden braking sensor 20 and the piezo sensor 30 may be set to 30%.

On the other hand, the step of calculating the future piezo signal (S500), the flow rate measurement value in the first past sampling interval immediately before the current sampling interval and the flow rate in the second past sampling interval immediately before the first past sampling interval The difference between the state measurement values and the difference between the flow state measurement value in the first past sampling interval and the flow state measurement value in the current sampling interval may be compared to predict the predicted value of the future sampling interval. The piezo signal may be generated based on the predicted value of the future sampling interval.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

The present invention is applicable to the automotive industry.

Claims

A rapid acceleration sensor for measuring a rapid acceleration degree of the vehicle in real time;

A rapid braking sensor for measuring the braking degree of the vehicle in real time;

Piezo sensor for measuring the flow state of the fuel line in real time;

A controller configured to determine the atomization degree of the fuel based on real-time measurement values received from the rapid acceleration sensor, the rapid braking sensor, and the piezo sensor, and generate an output signal accordingly; And

A fuel atomization device for applying a sine wave to fuel in accordance with an output signal of the controller;

Fuel atomization module according to the real-time vehicle state having a.
The method of claim 1,

The rapid acceleration sensor measures the rotational acceleration of the accelerator of the vehicle,

The rapid brake sensor is a fuel atomization module according to the real-time vehicle status, characterized in that for measuring the acceleration of rotation of the brake of the vehicle.
The method of claim 1,

The controller divides the real-time measurement value received from the piezo sensor into sampling interval units, compares the measured value in the current sampling interval with the measured value in the past sampling interval before the current sampling interval, and immediately after the current sampling interval. Predicting the measured value in the future sampling interval of the fuel atomization module according to the real-time vehicle status, characterized in that to determine the required atomization degree of fuel based on the predicted measured value.
The method of claim 3,

The control unit:

A difference between the measured value in the first past sampling section immediately before the current sampling section and the measured value in the second past sampling section immediately before the first past sampling section,

Comparing the difference between the measured value in the first past sampling interval and the measured value in the current sampling interval,

The fuel atomization module according to the real-time vehicle status, characterized in that for generating an output signal by predicting the measured value of the future sampling interval.
The method of claim 1,

The fuel atomization device is:

A sine wave amplifier for amplifying and outputting a sine wave corresponding to the output signal of the controller; And

And a sine wave applicator for atomizing the fuel by transmitting a sine wave output from the sine wave amplifier to the fuel.
A fuel atomization method of a fuel atomization module having the structure of claims 1 to 5,

Measuring the rapid acceleration value and the rapid braking value by the rapid acceleration sensor and the rapid braking sensor;

Measuring a piezo value from the piezo sensor;

A control unit receiving the rapid acceleration value and the rapid braking value to generate a rapid acceleration signal and a rapid braking signal;

Calculating a future piezo signal by receiving the piezo value from a controller;

Determining an output signal by combining the received rapid acceleration signal, rapid braking signal, and piezo signal;

Outputting and amplifying a sine wave according to the output signal; And

Atomizing fuel by transferring the amplified sine wave to a flow rate supplied to an engine.
The method of claim 6,

The signal for the flow rate state using the piezo sensor,

A difference between the flow rate state measurement value in the first past sampling section immediately before the current sampling section and the flow rate state measurement value in the second past sampling section immediately before the first past sampling section,

Comparing the difference between the flow state measurement value in the first past sampling interval and the flow state measurement value in the current sampling interval,

Fuel atomization method characterized in that it is generated by predicting the measured value of the future sampling interval.
The method of claim 6,

The rapid acceleration degree signal corresponds to a value measured by the rotational acceleration of the accelerator of the vehicle,

The rapid braking degree signal is a fuel atomization method, characterized in that corresponding to the value measured by the rotational acceleration of the brake of the vehicle.