KR100196374B1 - A corrective method of a measurement of fuel of a car - Google Patents
A corrective method of a measurement of fuel of a car Download PDFInfo
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- KR100196374B1 KR100196374B1 KR1019960046399A KR19960046399A KR100196374B1 KR 100196374 B1 KR100196374 B1 KR 100196374B1 KR 1019960046399 A KR1019960046399 A KR 1019960046399A KR 19960046399 A KR19960046399 A KR 19960046399A KR 100196374 B1 KR100196374 B1 KR 100196374B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K37/00—Dashboards
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- Chemical & Material Sciences (AREA)
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
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Abstract
본 발명은 자동차의 연료측정량 보정방법에 관한 것으로, 연료탱크내의 연료센서에 의한 1차연료량(Qa)과 사용된 사용연료량(Qb)을 측정한 후 자동차를 멈추어 다시 잔존된 2차연료량(Qf)을 측정하는 단계; 이어 주유된 주유연료량(Fi)과 연료센서에 의한 3차연료량(Qs)을 측정하고 보상로직(Compensation Logic)을 내장한 MCU(Micro Control Unit)에 입력시키는 단계; 이어 연료센서보정기능이 ON되는 경우 라디오를 OFF하고 주유량을 다시 설정하여 연료센서를 보정하거나, 또는 연료센서보정기능이 OFF되어 보상로직에 의해 연료량이 보정된 후, 주유연료량(Fi)에 2차 연료량(Qf)를 더하고 다시 계산된 보정치(Cv)를 더하여 4차연료량(Qo)을 측정하는 단계로 되어 정확한 연료량을 측정하게 되고, 이로인해 자동차의 연비도 정확하게 측정될 수 있도록 된 것이다.The present invention relates to a method of correcting a fuel metering amount of an automobile. The present invention measures a primary fuel quantity (Qa) by a fuel sensor in a fuel tank and a used fuel quantity (Qb) ); Measuring the fuel injected fuel amount Fi and the fuel quantity Qs by the fuel sensor, and inputting the measured fuel quantity to a microcontrol unit (MCU) having a compensation logic; When the fuel sensor correction function is ON, the radio is turned OFF and the fuel amount is reset to compensate the fuel sensor. Alternatively, when the fuel sensor correction function is OFF and the fuel amount is corrected by the compensation logic, The fuel amount Qf is added and the calculated correction value Cv is added to measure the fourth fuel amount Qo to measure the fuel amount accurately so that the fuel consumption of the automobile can be accurately measured.
Description
본 발명은 자동차의 연료측정량 보정방법에 관한 것으로, 특히 주유시 측정된 연료량과 연료센서의 측정량과의 오차를 보상하여 정확한 잔존 연료량을 측정할 수 있도록 된 자동차의 연료측정량 보정방법에 관한 것이다.The present invention relates to a method of correcting a fuel metering amount of an automobile, and more particularly, to a method of correcting a fuel metering amount of an automobile which can measure an accurate remaining fuel amount by compensating an error between a measured amount of fuel and a measured amount of the fuel sensor will be.
일반적으로, 자동차의 가솔린이나 디젤같은 액체 연료는 연료탱크내에 저장되어 엔진으로 공급되어 동력을 발생시키는데 사용 되므로, 이와같은 연료량은 항상 운전자에 의해 감지되어야 만 되어 통상, 운전석부위에 구비된 연료표시기에 연결되어 현재의 연료잔존량을 운전자에게 알려주도록 연료탱크내로 연료센서를 장착하게 된다. 이와같은 연료표시기에 의해 운전자는 운전석에 앉아서도 연료탱크내의 연료량을 감지하여 상황에 따라 연료를 채워주게 된다.Generally, a liquid fuel such as gasoline or diesel of an automobile is stored in a fuel tank and is supplied to the engine to generate power. Therefore, such a fuel amount must always be sensed by a driver, so that a fuel indicator And the fuel sensor is mounted in the fuel tank so as to inform the driver of the present fuel remaining amount. Such a fuel indicator allows the driver to sit on the driver's seat to sense the amount of fuel in the fuel tank and to fill the fuel according to the situation.
그러나, 상기와 같이 연료탱크내의 연료량을 측정하도록 연료탱크내에 구비된 연료센서를 이용하여 잔존연료량을 측정하게 되면, 이 연료게이지센서의 구조상 차량의 흔들림 즉, 비포장도로에 의해 가해지는 충격 또는 급정거나 급 발진 등에 따라 함께 흔들리게 되어 연료탱크의 연료량을 정확히 측정하기가 매우 어렵고, 이로인해 연료량과 주행된거리에 따라 측정되는 자동차의 연비에 대한 신뢰도가 저하되는 등의 문제가 있게 된다.However, if the residual fuel amount is measured using the fuel sensor provided in the fuel tank to measure the amount of fuel in the fuel tank as described above, the fluctuation of the vehicle due to the structure of the fuel gauge sensor, that is, It is very difficult to accurately measure the amount of fuel in the fuel tank because the fuel tank is shaken together with a sudden oscillation or the like. As a result, the reliability of the fuel efficiency of the automobile measured according to the fuel amount and the distance traveled is reduced.
이에 본 발명은 상기와 같은 문제를 해소하기 위해 발명된 것으로, 연료탱크내에서 연료를 측정하는 연료센서의 신호를 각 차종에 따른 여러요건들을 고려하여 보상하여 운전석에 구비된 연료표시기로 보내 항상 정확한 잔존 연료량을 측정할 수 있도록 된 자동차의 연료측정량 보정방법을 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to compensate for the signal of the fuel sensor for measuring the fuel in the fuel tank in consideration of various requirements according to each vehicle type, And it is an object of the present invention to provide a method of calibrating a fuel metering amount of an automobile which can measure the remaining fuel amount.
제1도는 본 발명에 따라 자동차의 연료측정량 보정방법에 대한 개략적인 흐름도이다.FIG. 1 is a schematic flow diagram of a fuel metering calibration method for a motor vehicle in accordance with the present invention.
상기와 같은 목적을 달성하기 위한 본 발명은, 연료탱크내에 구비된 연료센서의 측정신호가 각 차종마다 그 특성에 맞게 보정되어 연료표시기로 표시되도록, 먼저 연료센서에 의한 1차연료량(Qa)과 사용된 사용연료량(Qb)을 측정한 후 자동차를 멈추어 다시 잔존된 2차연료량(Qf)을 측정하는 단계; 이어 주유된 주유연료량(Fi)과 연료센서에 의한 3차연료량(Qs)을 측정하고 보상로직(Compensation Logic)을 내장한 MCU(Micro Control Unit)에 입력시키는 단계; 이어 연료센서보정기능이 ON되는 경우 라디오를 OFF하고 주유량을 다시 설정하여 연료센서를 보정하거나, 또는 연료센서보정기능이 OFF되어 보상로직에 의해 연료량이 보정된 후, 주유연료량(Fi)에 2차연료량(Qf)를 더하고 다시 계산된 보정치(Cv)를 더하여 4차연료량(Qo)을 측정하는 단계를 거쳐 정확한 연료량을 측정하게 된다.In order to achieve the above object, the present invention is characterized in that a measurement signal of a fuel sensor provided in a fuel tank is corrected for each vehicle type to be displayed by a fuel indicator, Measuring the used fuel amount (Qb) and measuring the remaining secondary fuel amount (Qf) by stopping the vehicle; Measuring the fuel injected fuel amount Fi and the fuel quantity Qs by the fuel sensor, and inputting the measured fuel quantity to a microcontrol unit (MCU) having a compensation logic; When the fuel sensor correction function is ON, the radio is turned OFF and the fuel amount is reset to compensate the fuel sensor. Alternatively, when the fuel sensor correction function is OFF and the fuel amount is corrected by the compensation logic, The fuel amount Qf is added and the calculated correction value Cv is added to measure the fourth fuel amount Qo to measure the accurate fuel amount.
이하 본 발명을 첨부된 도면을 참조로 상세히 설명한다.BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in detail hereinafter with reference to the accompanying drawings.
제1도는 본 발명에 따라 자동차의 연료측정량 보정방법에 대한 개략적인 흐름도를 도시한 것인바, 먼저 연료탱크내의 연료센서에 의해 측정된 1차연료량(Qa)을 기준으로 주행된 후, 연료를 분배하는 인젝터의 펄스감지에 의해 사용된 사용연료량(Qb)을 측정한 후 자동차를 멈추어 다시 잔존된 2차연료량(Qf)을 측정하는 단계; 이어 연료탱크내로 주유된 주유연료량(Fi)을 측정한 후 다시 연료센서에 의해 3차연료량(Qs)을 측정하여, 이때 이 3차연료량(Qs)과 2차연료량(Qf)의 차가 통상 2liter보다 크게될 때까지 연료를 주입하여 보상로직(Compensation Logic)을 내장한 MCU에 입력시키는 단계를 갖게 된다.FIG. 1 is a schematic flow chart of a fuel metering correction method for an automobile according to the present invention. First, after running on the basis of a primary fuel quantity Qa measured by a fuel sensor in a fuel tank, Measuring the used fuel amount (Qb) used by the pulse sensing of the distributing injector, stopping the vehicle and measuring the remaining secondary fuel amount (Qf) again; Next, after measuring the fuel oil amount Fi injected into the fuel tank, the fuel quantity of the secondary fuel Qs is measured again by the fuel sensor. At this time, the difference between the tertiary fuel quantity Qs and the secondary fuel quantity Qf is normally less than 2 liter The fuel is injected until it becomes large and the compensation logic is input to the MCU having the built-in compensation logic.
이어, 연료센서보정기능이 ON 되는 경우 라디오를 OFF하고 주유량을 다시 설정하여 연료센서를 보정하거나, 또는 연료센서보정기능이 OFF되어 보상로직에 의해 연료량이 보정된 후, 주유연료량(Fi)에 2차연료량(Qf)를 더하고 다시 계산된 보정치(Cv)를 더하여 4차연료량(Qo)을 측정하는 단계를 거쳐 정확한 연료량을 측정하게 된다.Then, when the fuel sensor correction function is turned on, the radio is turned off, the fuel amount is reset to reset the fuel sensor, or the fuel sensor correction function is turned off and the fuel amount is corrected by the compensation logic. The correct fuel amount is measured by adding the difference fuel amount Qf and adding the calculated correction value Cv to measure the fourth fuel amount Qo.
이때, 상기 보정치(Cv)를 얻기위한 연료량 산출은 먼저, 연료센서에 의한 오차값(α,β)중 α의 함수로 1차연료량(Qa)을 다음과 같은 방정식을 표현하고,At this time, the calculation of the fuel amount for obtaining the correction value Cv is performed by first expressing the following equation as the primary fuel amount Qa as a function of? Among the error values? And? By the fuel sensor,
1차연료량(Qa) = 사용연료량(Qb) + [2차연료량(Qf) + α] --- (1)The primary fuel quantity Qa = the used fuel quantity Qb + the secondary fuel quantity Qf +
또한, 3차연료량(Qs)을 β의 함수로 다음과 같은 방정식으로 나타낸다.Further, the tertiary fuel quantity Qs is expressed by the following equation as a function of?.
3차연료량(Qs) = 2차연료량(Qf) + [주유연료량(Fi) + β] --- (2)(3) The fuel quantity Qs is the secondary fuel quantity Qf + the fuel quantity Fi +
이어, 상기 (1)과 (2)식을 다음과 같이 변환하면,Next, when the above equations (1) and (2) are transformed as follows,
2차연료량(Qf) + α = 1차연료량(Qa) - 사용연료량(Qb) ----- (3)Secondary fuel quantity Qf + α = Primary fuel quantity Qa-Used fuel quantity Qb ----- (3)
2차연료량(Qf) + β = 3차연료량(Qs) - 주유연료량(Fi)Secondary fuel amount Qf + beta = tertiary fuel amount Qs-fuel amount Fi
여기서, 상기 (3)식을 다시 α와 β의 함수로서 다음과 같이 변환시키면,Here, if the above expression (3) is again transformed as a function of? And? As follows,
α+β=1차연료량(Qa)-3차연료량(Qs)-[사용연료량(Qb)-주유연료량(Fi)]=1차연료량(Qa)-3차연료량(Qs)-K(상수) --- (4)(fuel quantity Qb) - fuel oil quantity Fi = primary fuel quantity Qa - tertiary fuel quantity Qs - K (constant) [0060] --- (4)
로 되어 결국 상기 (4)식은 예상오차값인 α+β와 예상연료량값인 1차연료량(Qa)-3차연료량(Qs)의 비례식으로 되어 MCU의 내장된 보상로직을 적합하게 변환시켜 주게 된다.(4) is proportional to α + β, which is an expected error value, and the primary fuel quantity (Qa) and the fuel quantity (Qs), which are estimated fuel quantity values, to suitably convert the built-in compensation logic of the MCU .
이상 설명한 바와 같이 본 발명에 의하면, 연료탱크내의 연료량을 1차연료량(Qa)과 사용된 사용연료량(Qb) 및 주행 후 잔존된 2차연료량(Qf)을 측정하고, 이어 주유된 주유연료량(Fi)과 연료센서에 의해 측정된 3차연료량(Qs)을 보상로직(Compensation Logic)을 내장한 MCU에 입력하여 측정되는 연료량이 예상오차(α+β)와 예상연료량[1차연료량(Qa)-3차연료량(Qs)]의 비례관계식으로 보상되어져, 정확한 연료량을 측정하게 되고, 이로인해 자동차의 연비도 정확하게 측정될 수 있게 되는 효과가 있다.As described above, according to the present invention, the fuel quantity in the fuel tank is measured as the primary fuel quantity Qa, the used fuel quantity Qb used and the secondary fuel quantity Qf remained after traveling, ) And the third fuel quantity (Qs) measured by the fuel sensor are input to the MCU having the compensation logic incorporated therein to calculate the estimated error (α + β) and the estimated fuel quantity (the primary fuel quantity (Qa) The third fuel quantity Qs), so that the fuel quantity can be accurately measured, so that the fuel consumption of the automobile can be accurately measured.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019960046399A KR100196374B1 (en) | 1996-10-17 | 1996-10-17 | A corrective method of a measurement of fuel of a car |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019960046399A KR100196374B1 (en) | 1996-10-17 | 1996-10-17 | A corrective method of a measurement of fuel of a car |
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| Publication Number | Publication Date |
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| KR19980027585A KR19980027585A (en) | 1998-07-15 |
| KR100196374B1 true KR100196374B1 (en) | 1999-06-15 |
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