KR100863328B1 - Wireless typing apparatus for measuring and displaying fuel ratio - Google Patents

Abstract

The present invention discloses a wireless display device for reducing fuel consumption of a vehicle.

The present invention provides an effective injection time calculating module for wirelessly receiving an injection valve change signal and calculating an effective injection time, an injection amount calculating unit configured to calculate an injection amount using the effective injection time input from the effective injection time calculating module, and A fuel economy calculation module for calculating fuel economy by receiving a vehicle speed from a GPS speedometer including a GPS receiver receiving an injection amount from an injection amount calculation unit and receiving a signal from a satellite, and an effective injection time calculated by the effective injection time calculation module and the And a display unit for displaying the fuel economy calculated by the fuel economy calculation module to the driver, the controller for controlling the effective injection time calculation module and the injection amount calculation unit, and the fuel economy calculation module and the display unit. The wireless display device for reducing the fuel of the vehicle configured as described above calculates fuel consumption and fuel consumption using the injection amount of the injector and the vehicle speed signal while driving the vehicle, and the driver calculates fuel consumption, instantaneous fuel consumption, average fuel consumption, and the like. As a guide can be confirmed in real time, it is possible to induce economic driving habits according to the driving environment of the vehicle, thereby reducing fuel consumption and promoting safe driving.

Fuel saving, fuel economy, injector, GPS speedometer, map sensor

Description

Wireless display apparatus for reducing fuel consumption of vehicles {Wireless typing apparatus for measuring and displaying fuel ratio}

1 is a block diagram of a wireless display device for reducing fuel in a vehicle according to an embodiment of the present invention.

2A is a waveform diagram of an injection valve change signal transmitted by the injector of FIG. 1 to the injection signal input unit, and FIG. 2B is a graph showing an opening width of the injector of FIG. 1 opening the injection valve in response to the injection valve change signal;

3 is a diagram illustrating an embodiment of a display unit of FIG. 1;

<Explanation of symbols for the main parts of the drawings>

100: injector 101: injection valve change signal wireless transmission unit

102: map sensor 104: GPS speedometer

108: injection valve open signal radio receiver

110: injection signal input unit 120: injection time calculation unit

130: effective injection time calculation unit 140: injection amount calculation unit

150: fuel economy calculating unit 160: speed input unit

170: driving distance calculation unit 200: memory

210: display unit 220: key input unit

230: control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless display device for reducing fuel consumption of a vehicle by measuring the amount of fuel consumed when driving a vehicle in real time, and more particularly, to measure fuel consumption due to various factors generated while driving a vehicle. The present invention relates to a wireless display device for reducing fuel consumption of a vehicle, which can induce economic driving habits according to driving conditions while increasing reliability of a product by precisely correcting the fuel consumption by accurately measuring fuel consumption. .

Since the 1980s, the development of electronic technology has changed a lot in automobile manufacturing technology. The development of microcomputers has been applied to automobiles to maintain the current air pollution levels, thus contributing to fuel savings by achieving combustion that is suitable for the emission of exhaust gas meeting desired standards.

There is no way to save fuel and reduce emissions with current engine structures and materials. The only way to reduce fuel consumption and further reduce emissions is for the driver to drive economically.

In general, the fuel consumption of automobiles is lowest in the appropriate load range and high in the low and high load ranges. Therefore, proper load operation can be economical operation. However, the conventional car is not equipped with a display device that can know the fuel consumption or the load level, so that the driver cannot know which load area while driving, and thus cannot drive in the appropriate load area.

As the experiments have shown, the fuel consumption is more than 20% when driving at 100 km / H and when driving at 130 km / H, and the difference in fuel consumption between a slow acceleration and a sharp acceleration is 30%. It turns out to fly up close.

By the way, the driver knows that the difference in fuel consumption according to the driving as described above, but because it can not be seen visually, the situation that does not realize the fuel consumption due to driving and can not practice economic driving.

In general, the fuel consumption was measured by installing a fuel consumption measuring instrument in the fuel supply line. However, the fuel consumption measuring device was expensive for several hundred or tens of millions of won, so it was used for the development of engines by automobile manufacturers and automobile related institutes, and it was almost impossible for ordinary motorists to know the fuel consumption of their cars. In addition, many drivers who are interested in fuel economy will fill the fuel tank during fueling to set the mileage totalizer to 0 while filling up the fuel tank to find fuel consumption and fuel economy. Fuel consumption was estimated using consumption and mileage.

However, these methods are not only accurate, but they are not available in real time, they are on average, and they are not used as real-time information.

The present invention was created to solve the above problems, the present invention is to measure the injector and the vehicle speed signal while driving the vehicle to calculate the amount of fuel and fuel consumption consumed by the wireless method for reducing the fuel of the vehicle to guide the driver in real time The object is to provide a display device.

Another object of the present invention is to correct the measurement error according to the mechanical operation of the injector to enable a more accurate fuel economy calculation to increase the reliability of the product while driving the driver's economical driving habits The present invention provides a wireless display device.

Wireless display device for reducing the fuel of the vehicle according to the present invention for realizing the above object, by receiving the injection valve change signal wirelessly to measure the time of the injection section to calculate the injection time, the injection valve modification An effective injection time calculation module for calculating an effective injection time by subtracting the invalid injection time from the injection time after measuring a rated voltage of a signal and calculating the effective injection time; and an effective injection time input from the effective injection time calculation module A fuel consumption calculation module configured to calculate fuel efficiency by receiving a vehicle speed from a GPS speedometer including an injection amount calculation unit configured to calculate an injection amount using a GPS receiver receiving an injection amount from the injection amount calculation unit and receiving a signal from a satellite; Effective injection according to the effective injection time transmitted from the effective injection time calculation module Displays the time histogram, the real-time fuel economy according to the fuel economy transmitted from the fuel economy calculation module, and the traveling speed transmitted from the GPS speedometer, as well as the cumulative driving fuel economy, section driving fuel economy, section distance, fuel consumption, injection time, engine oil And a display unit for displaying any one of the exchange distance and the GPS information to the driver, and a control unit for controlling the effective injection time calculating module, the injection amount calculating unit, and the fuel efficiency calculating module and the display unit.

 Hereinafter, a preferred embodiment of a wireless display device for reducing fuel of a vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a configuration of a wireless display device for reducing fuel consumption of a vehicle according to an exemplary embodiment of the present invention.

As shown in the drawing, the wireless display device for reducing fuel in the vehicle of the present invention includes the injector 100, the injection valve change signal radio transmitter 101, the map sensor 102, the GPS speedometer 104, and the injection. The valve change signal radio receiver 108, the injection signal input unit 110, the injection time calculation unit 120, the effective injection time calculation unit 130, the injection amount calculation unit 140, the fuel efficiency calculation unit 150, the speed input unit ( 160, a travel distance calculator 170, a memory 200, a display 210, a key input 220, and a controller 230.

Here, the injection valve change signal radio receiver 108, the injection signal input unit 110, the injection time calculator 120, and the effective injection time calculator 130 may be divided into an effective injection time calculation module. The fuel efficiency calculator 150 and the speed inputter 160 may be referred to as a fuel efficiency calculator.

The injector 100 is an injector for injecting a fuel at a normal pressure, which has been brought up to the fuel pipe, to the intake manifold by an electric injection signal, and thus, a detailed description thereof will be omitted.

That is, the injector 100 receives the injection valve change signal from the electronic control unit (ECU) and opens the injection valve. The injection valve change signal wireless transmission unit 101 receives the injection valve change signal received from the electronic control device. It transmits to the injection valve change signal radio receiver 108 through. Then, the injection valve change signal radio receiver 108 transmits the received injection valve change signal to the injection signal input unit 110.

Meanwhile, the map sensor (Manifold Absolute Pressure Sensor) 102 is indirectly measuring the amount of air sucked into the engine and is currently applied to most vehicles. The operation principle of the map sensor 102 occurs in the intake manifold. The pressure of the map sensor 102 is measured and compared with the prescribed absolute pressure, and through this, the amount of air is indirectly flowed out so that the injector 100 is properly driven, so the detailed description is omitted.

The GPS speedometer 104 is configured to include a GPS receiver and calculates the current position according to a triangulation method of three different distances by measuring accurate time and distance from three or more satellites. The GPS speedometer 104 can be obtained not only the position of latitude, longitude, altitude, but also accurate time together with the three-dimensional speed information, and the method of recognizing the speed of the vehicle using the GPS receiver is a known technology. Omit.

The injection signal input unit 110 receives the injection valve modification signal through the injection valve modification signal through the wireless injection unit modification signal wireless transmitter 101 and the injection valve modification signal wireless receiver 108 through the air from the injector 100. The signal is transmitted to the injection time calculator 120. The injection time calculation unit 120 calculates the injection time from the injection valve change signal received from the injection signal input unit 110.

Here, the waveform of the injection valve modification signal inputted by the injection signal input unit 110 from the injector 100 is shown in FIG. 2A. As shown, the injection valve modification signal is a signal of a stepped waveform, and 0 V in a stepped waveform. The section with the voltage becomes the injection section.

Therefore, the injection time calculation unit 120 calculates the injection time by measuring the time of the injection section in the injection valve change signal of the staircase waveform in order to calculate the injection time.

On the other hand, the effective injection time calculation unit 130 obtains the effective injection time from the injection time calculated by the injection time calculation unit 120. The reason for obtaining the effective injection time is because the injector 100 needs time to open so that the actual oil is sucked when the injection valve is opened by receiving the injection valve change signal from the electronic control device.

In addition, even if the injector 100 receives the injection valve change signal from the electronic control device to open the injection valve, the flow rate sucked at the opening time may vary depending on the opening width of the injection valve, so in the average sense, Effective injection time is required.

Therefore, the effective injection time calculation unit 130 obtains the effective injection time in consideration of the operation of the actual injection valve, which is represented by the following [Equation 1].

[Equation 1]

T = Tc (= Teff * K1)) + Tnull

Here, T denotes an injection time, Tc denotes an injection possible time, Teff denotes an effective injection time, and Tnull denotes an invalid injection time.

In this case, the injection time T refers to the injection time calculated by the injection time calculation unit 120, and is a time calculated by the injector 100 from the injection valve change signal received from the electronic control device.

And, the injection possible time Tc refers to the time that the oil can actually be sucked when the injector 100 opens the injection valve in response to the injection valve change signal of the electronic control device, the amount of oil sucked in the injection possible time is As time goes by, it grows more and more. This injection possible time Tc is obtained by subtracting the invalid injection time Tnull from the injection time T.

Next, the effective injection time Teff is the time required for one engine process, assuming the average amount of intake and assuming that the average amount of oil is inhaled. That is, the effective injection time refers to the time taken when the average amount of oil is sucked, and can be obtained by dividing the variable factor K1 by the injection possible time Tc.

 Next, the invalid injection time Tnull refers to the time when the injector 100 opens until the injection valve can be sucked when the injector 100 receives the injection valve change signal from the electronic controller and opens the injection valve. This invalid injection time is affected by the voltage of the battery of the vehicle, the effective injection time calculating unit 130 obtains the voltage of the battery of the vehicle by measuring the rated voltage of the injection valve change signal received from the injector 100, This result is used to calculate the invalid injection time.

The injection time, injection possible time, and invalid injection time described above are illustrated in FIG. 2B, where the injection time is the sum of the injection possible time and the invalid injection time, and the invalid injection time is determined by the injector 100 in response to the injection valve change signal. It can be seen that when opening, a certain increase in width from the start of opening becomes the invalid injection time, and thereafter, the injection possible time.

On the other hand, the effective injection time calculation unit 130 may calculate the effective injection time using the above [Equation 1] from the injection time received from the injection time calculation unit 120.

That is, the effective injection time calculation unit 130 receives the injection time calculated by the injection time calculation unit 120, receives the injection valve change signal from the injection signal input unit 110, and measures the rated voltage to obtain an invalid injection time. After the calculation, the effective injection time can be calculated using Equation 1 above.

The effective injection time calculated in this manner is transmitted to the effective injection time calculating unit 130 to the injection amount calculating unit 140, and stored in the memory 200.

In addition, the injection amount calculation unit 140 obtains a unit injection amount by multiplying the injection pressure by the effective injection time calculated by the effective injection time calculation unit 130, and is expressed by Equation 2 below.

[Equation 2]

Q = K2 * Teff * P

Here, Q is the injection amount, K2 is the variable factor, Teff is the effective injection time, P is the injection pressure.

The reason why the variable factor K2 is required is that the unit of the effective injection time and the injection pressure are different from the injection amount, so that the unit needs to be unified, and a certain value must be multiplied accordingly.

In addition, although the injection pressure P may designate a constant value according to the vehicle model as a constant, the injection pressure P may be input and used in real time from the map sensor 102.

As such, when the injection amount is calculated, the injection amount calculation unit 140 stores the calculated injection amount in the memory 200.

Next, the speed input unit 160 receives the speed from the GPS speedometer 104, transmits the received speed to the driving distance calculator 170 and the fuel efficiency calculator 150, and stores the speed in the memory 200.

The driving distance calculator 170 calculates the driving distance using the speed received from the speed inputter 160 and stores the driving distance in the memory 200. That is, the travel distance calculator 170 multiplies the time input from the speed input unit 160 to calculate the travel distance, and stores the travel distance in the memory 200.

Then, the fuel economy calculation unit 150 calculates fuel economy using the following [Equation 3] using the injection amount received from the injection amount calculation unit 140 and the speed input from the speed input unit 160.

[Equation 3]

DFC = V (km / h) / F (l / h)

Here, the DFC represents the driving fuel economy of the vehicle, V represents the traveling speed, and F represents the injection amount.

That is, the fuel efficiency calculation unit 150 divides the traveling speed by the injection amount to obtain the driving fuel efficiency of the vehicle.

On the other hand, the control unit 230 is the injection signal input unit 110, the injection time calculation unit 120, the effective injection time calculation unit 130, the injection amount calculation unit 140, fuel economy calculation unit 150, speed input unit 160 , The traveling distance calculator 170 is controlled.

The control unit 230 controls the display unit 210 to display the speed and the effective injection time using a histogram and to display fuel efficiency. In addition, the controller 230 controls the display unit 210 to display the cumulative running fuel economy, section driving fuel economy, section distance, fuel consumption, injection time, engine oil replacement distance, and the like.

An example of a speed, an effective injection time histogram, an effective injection time, and an effective fuel economy displayed on the display unit 210 is illustrated in FIG. 3. The speed is displayed on the left side of the lower portion of the display unit 210 using numbers. Fuel efficiency is indicated by numbers at the bottom, effective injection time is indicated by numbers at the upper right, and effective injection time is indicated using the curved histogram graph at the top. The curved histogram graph consists of a green section, a blue section, and a red section. The green section consists of five bars, for example, and if one bar is set to represent 0.5 ms, the effective injection time is 0. If it is set to 2.5, the blue section is composed of five bars (bar) as an example, if one bar is set to represent 0.5ms is displayed when the effective injection time is 2.5 ~ 5 or less, red section For example, consists of six bars (bar), if one bar is set to represent 0.5ms to display 5 ~ 8ms. Of course, there is no increase in the histogram bar when the effective injection time is 8 ms or more.

Here, when the scale of the curved histogram graph is increased, the driver visually recognizes that the effective injection time is long, and when entering the red section, the driver does not step on the accelerator pedal to be in the green section, thereby reducing fuel consumption. can do.

On the other hand, the controller 230 provides a cumulative running fuel economy, section driving fuel economy, section distance, fuel consumption, injection time, engine oil replacement distance, GPS information and the like to the display unit 210.

Here, the cumulative driving fuel economy refers to the cumulative driving fuel economy from a specific time point set by the driver to the current time point, and the segment driving fuel economy refers to the section driving fuel economy in a specific section set by the driver.

In addition, the section distance refers to the driving distance of a specific section set by the driver in the apparatus, and the fuel consumption refers to the fuel consumption at a specific time point.

The effective injection time refers to the time at which oil is sucked in, and the engine oil replacement distance refers to the operating distance from the time of replacing the engine oil to the present, and the GPS information refers to geographic information.

That is, when the driver wants to know the cumulative driving fuel economy through the key operation of the key input unit 220, the controller 230 reads the real-time driving fuel economy stored in the memory 200 and calculates the cumulative fuel economy through the display unit 210. Provide the driver.

In addition, when the driver wants to know the section cumulative fuel economy for a specific section through the key operation of the key input unit 220, the controller 230 calculates the section cumulative fuel economy for the section designated by the user and the driver through the display unit 210. To show.

In addition, when the driver wants to know the section distance for the specific section through the key operation of the key input unit 220, the controller 230 reads the travel distance stored in the memory 200 to calculate the section distance for the specific section. The calculated interval is displayed on the display unit 210.

In addition, when the driver wants to know the fuel consumption for a specific section through the key operation of the key input unit 220, the controller 230 reads the fuel consumption for the specific section stored in the memory 200 and displays the display 210. ).

In addition, the control unit 230 exchanges the engine oil stored in the memory 200 if you want to know the cumulative driving distance from the time of replacing the engine oil to know the replacement time of the engine oil through the key operation of the key input unit 220. The mileage from the time point to the present is accumulated and shown to the driver. The driver can use this information to change the engine oil.

Thus, the controller 230 reads the accumulated driving fuel economy, section driving fuel economy, section distance, fuel consumption, injection time, engine oil change distance, etc. from the memory 200 according to the key operation of the key input unit 220 by the driver. do.

That is, the key in the center portion of the key input unit 220 indicates an on-off key. When the driver turns on the on-off key, the controller 230 provides a menu usable to the display unit 210.

At this time, the menu 230 available to the control unit 230 to the display unit 210 includes the cumulative running fuel economy, section driving fuel economy, section distance, fuel consumption, injection time, engine oil change distance, GPS information.

When such a menu is provided through the display unit 210, the driver may select a desired menu using the up and down keys of the key input unit 220, and the controller 230 reads information on the selected menu from the memory 200. And display on the display unit 210.

In particular, when the driver requests the GPS information through the key operation of the key input unit 220, the controller 230 reads the GPS information from the GPS receiver (not shown) and provides the GPS information.

The display device for reducing the fuel of the vehicle of the present invention configured as described above calculates fuel consumption and fuel consumption according to the driving through the most efficient method and displays them in real time so that the driver can economically operate according to the driving environment based on such information. Driving can be performed.

On the other hand, the present invention is not limited to the described embodiments, it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

The display device for reducing fuel consumption of the vehicle configured and operated as described above may calculate fuel consumption and fuel consumption using the injection amount of the injector and the vehicle speed signal while driving the vehicle, and the driver may calculate fuel consumption, instantaneous fuel consumption, and average fuel consumption in real time. As a result, it is possible to guide economic driving habits according to the driving environment of the vehicle, thereby reducing fuel consumption and promoting safe driving.

Claims (7)

The injection time is calculated by wirelessly receiving the injection valve change signal and calculating the injection time by measuring the time of the injection section, calculating the invalid injection time by measuring the rated voltage of the injection valve change signal, and then subtracting the invalid injection time from the injection time. An effective injection time calculating module for calculating an effective injection time; An injection amount calculating unit configured to calculate an injection amount using the effective injection time input from the effective injection time calculating module; A fuel economy calculation module configured to calculate fuel economy by receiving a vehicle speed from a GPS speedometer including a GPS receiver receiving the injection amount from the injection amount calculation unit and receiving a signal from a satellite; The effective injection time histogram according to the effective injection time transmitted from the effective injection time calculation module, the real-time fuel economy according to the fuel economy transmitted from the fuel economy calculation module, and the traveling speed transmitted from the GPS speedometer are displayed to the driver, A display unit displaying one of the section driving fuel economy, section distance, fuel consumption, injection time, engine oil change distance, and GPS information to the driver; A controller for controlling the effective injection time calculating module, the injection amount calculating unit, and the fuel efficiency calculating module and the display unit; Wireless display device for reducing the fuel of the vehicle comprising a. The method of claim 1, wherein the effective injection time calculation module, A display device for reducing fuel in a vehicle, characterized in that the injection valve injection signal is wirelessly input from the injector. The display apparatus of claim 1, wherein the effective injection time calculating module wirelessly receives an injection valve change signal from an electronic control device.  According to any one of claims 1 to 3, The effective injection time calculation module, An injection valve modification signal wireless receiver configured to wirelessly receive the injection valve modification signal; An injection signal input unit configured to receive an injection valve modification signal from the injection valve modification signal radio receiver; An injection time calculating unit receiving an injection valve change signal from the injection signal input unit and calculating a injection time by measuring a time of an injection section; An effective injection time calculation unit for calculating an invalid injection time by measuring a rated voltage of the injection valve opening signal, and subtracting the invalid injection time from the injection time calculated by the injection time calculating unit to calculate an effective injection time; Wireless display device for reducing the fuel of the vehicle comprising a.  The method of claim 1, wherein the injection amount calculation unit, Wireless display device for reducing the fuel of the vehicle, characterized in that for receiving the injection pressure from the map sensor to calculate the injection amount by correcting the injection amount using the input injection pressure. According to claim 1, The fuel efficiency calculation module, A speed input unit for receiving a speed from the GPS speedometer; A fuel economy calculator configured to input a speed from the speed input unit and calculate a fuel economy by receiving a spray amount from the spray amount calculator; Wireless display device for reducing the fuel of the vehicle, characterized in that further comprises.  The fuel consumption calculation module of claim 6, The apparatus may further include a driving distance calculator configured to calculate a driving distance by receiving the speed from the speed input unit, wherein the controller displays a driving distance or a section driving distance on the display unit. Device.

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