KR100811913B1 - A compensating method for atmoshperic pressure of vehicle - Google Patents

A compensating method for atmoshperic pressure of vehicle Download PDF

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KR100811913B1
KR100811913B1 KR1020060125346A KR20060125346A KR100811913B1 KR 100811913 B1 KR100811913 B1 KR 100811913B1 KR 1020060125346 A KR1020060125346 A KR 1020060125346A KR 20060125346 A KR20060125346 A KR 20060125346A KR 100811913 B1 KR100811913 B1 KR 100811913B1
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atmospheric pressure
vehicle
pressure
manifold
rate
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KR1020060125346A
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Korean (ko)
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김진홍
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • B60W40/06—Road conditions
    • B60W40/076—Slope angle of the road
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mathematical Physics (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

A method for compensating atmospheric pressure of a vehicle is provided to guide safety driving when the vehicle drives from hilly area to low-lying area by operating an engine according to the compensated atmospheric pressure. A method for compensating atmospheric pressure of a vehicle comprises the steps: judging whether is in throttle closing range or fuel supply is stopped(ST10); judging whether the vehicle is driving from a hilly area to a low-lying area by calculating reduction ratio of the vehicle when the vehicle is in throttle closing range or in the fuel supply stop state(ST20); and measuring pressure variation of an intake manifold using a map sensor when the vehicle drives from the hilly part to the planar part, and computing the present atmospheric pressure by multiplying the measured pressure variation by standard value(ST30-ST50).

Description

차량의 대기압 보상 방법{A compensating method for atmoshperic pressure of vehicle}A compensating method for atmoshperic pressure of vehicle}

도 1은 본 발명에 의한 차량의 대기압 보상 방법의 구성을 나타내는 플로우차트.1 is a flowchart illustrating a configuration of a method for compensating atmospheric pressure of a vehicle according to the present invention.

본 발명은 차량의 대기압 보상 방법에 관한 것으로서, 특히 차량이 주행하는 노면의 경사 상태와 고도 상태에 따라 대기압을 산출하는 차량의 대기압 보상 방법에 관한 것이다. The present invention relates to a method for compensating atmospheric pressure of a vehicle, and more particularly, to a method for compensating atmospheric pressure of a vehicle, which calculates atmospheric pressure according to an inclined state and an altitude state of a road surface on which the vehicle travels.

일반적으로 산악이나 해발 고도가 높은 고지대는 일반 평지나 저지대와는 달리 공기량에 차이가 있고, 공기 중에 포함되어 있는 산소량도 차이가 있게 된다.In general, high altitude altitude and high altitude, unlike the plains and lowlands, the amount of air is different, the amount of oxygen contained in the air is also different.

그래서 산악이나 해발 고도가 높은 고지대에서는 공기량(공기의 밀도)이 부족하여 시동시 공기량 부족으로 인하여 엔진 실린더의 완료 폭발이 되지않게 된다.Therefore, in the mountain or high altitude, the air volume (air density) is insufficient, and the engine cylinder is not completely exploded due to the lack of air volume at the start.

고급형 차량의 경우에는 대기압 센서가 내장되어 있어, 별도의 조치가 없이 도 직접 대기압을 측정하여 이에 맞추어 엔진이 동작하도록 하지만, 그렇지 않은 대부분의 차량은 대기압 센서가 장착되어 있지 않아 대기압의 변화에 맞추어 보정을 하여 엔진의 동작이 적절히 이루어지도록 하는 필요가 있다. In the case of high-end cars, the atmospheric pressure sensor is built-in, so the engine can operate by measuring the atmospheric pressure directly without any action. However, most vehicles that do not have an atmospheric pressure sensor are compensated for changes in atmospheric pressure. It is necessary to make the operation of the engine appropriately.

이러한 필요에 의해 종래에 고지대에서 공기량을 보정하는 다음과 같은 방법이 있다. Due to such a necessity, there are conventionally the following methods for correcting the amount of air in highlands.

즉, 시동 공기량(Is) ="시동" 기본 공기량(Ia) + 고지 보정 공기량(Ih) + 아이들 기본 공기량(Ib),That is, the starting air amount Is = the starting air amount Ia + the amount of notice correction air Ih + the idle basic air amount Ib,

아이들 공기량(WTS) ="아이들" 기본 공기량(Ib) + 고지 보정 공기량(Ih)Idle air volume (WTS) = "Children" Basic air volume (Ib) + Notice corrected air volume (Ih)

여기서, Ih는 고지대에 대한 기 설정된 테이블 값 Ih ="f(h)에" 의하여 동일한 값으로 주어지고, 상기 Ih 량은 고도차에 의한 공기의 밀도차로 공기량 부족 분을 보상해 주는 보정값이다.Here, Ih is given the same value by the predetermined table value Ih = f (h) for the highlands, and the Ih amount is a correction value that compensates for the shortage of air due to the density difference of the air due to the altitude difference.

그런데, 아이들 공기량보다 시동시(특히 가열 상태에서 정차치)엔 그 차이 이상으로 공기가 필요하다.By the way, air is needed more than the difference at the time of starting (especially the stop value in a heating state) rather than the idle air amount.

그러나, 차량에 저지대에서 고지대로 주행하는 경우에는 상기와 같은 보정이 비교적 정확하게 이루어지지만, 고지대에서 저지대로 주행하는 경우에는 잦은 드로틀 폐쇄 구간으로 인해 대기압 모델이 부정확하게 나타나서 엔진의 동작이 적절히 이루어질 수 없게 되는 문제점이 있었다. However, when the vehicle is driven from the lowlands to the highlands, the above corrections are made relatively accurately.However, when driving from the highlands to the lowlands, the atmospheric model is inaccurate due to frequent throttle closures, so that the engine cannot operate properly. There was a problem.

상기한 문제점을 해결하기 위하여 해수면 고도에서 엔진 회전수와 드로틀의 전후단 압력비에 따른 공기량을 도식화하여, 차량의 주행중인 고도가 높아져 흡입되는 공기량이 작아지면 해수면 상태의 공기량과 비교하여 그 차이를 환산하여 대 기압을 모델화하는 방법이 개시되었다. In order to solve the above problems, the air volume according to the engine speed and the front and rear pressure ratios of the throttle is plotted at sea level altitude, and when the driving altitude of the vehicle increases, the amount of air to be sucked decreases, and the difference is compared with the air volume at the sea level. A method of modeling atmospheric pressure is disclosed.

그러나, 이러한 방법은 드로틀이 일정 이상 개방되어 있어야 하고, 저지에서 고지 운행시는 차량의 토크가 요구되었다. However, this method requires that the throttle be kept open for a certain amount of time, and that the torque of the vehicle is required when driving on the lowlands.

또한, 고지대에서 저지대로 운행하는 경우에는 종래의 기술과 마찬가지로 드로틀 구간의 폐쇄 문제가 나타나는 문제점이 있었다. In addition, when operating from the highland to the lowland, there was a problem in that the problem of closing the throttle section appeared as in the prior art.

또한, 특허출원 2004-103507 '연료공급 차단 구간에서의 대기압 측정 시스템 및 그의 방법'이 개시되었다. In addition, Patent Application 2004-103507 'Atmospheric pressure measuring system and method thereof in the fuel supply blocking section' has been disclosed.

평지에서의 대기압 = {[(흡입공기량 * Factor1) / (TPS열림량 * 기체상수 및 기체온도보정값)] + (흡입공기량 기울기 * INTAKE 압력)} / 흡입공기 초기값Atmospheric pressure on level = {[(Intake air volume * Factor1) / (TPS opening amount * Gas constant and gas temperature compensation value)] + (Intake air volume gradient * INTAKE pressure)} / Initial value of intake air

경사로에서의 대기압 = {[(흡입공기량 * Factor2) / (TPS열림량 * 기체상수 및 기체온도보정값)] + (흡입공기량 기울기 * INTAKE 압력)} / 흡입공기 초기값Atmospheric pressure on the ramp = {[(Intake air quantity * Factor2) / (TPS opening amount * Gas constant and gas temperature correction value)] + (Intake air quantity slope * INTAKE pressure)} / Initial value of intake air

상기한 방법은 위와 같은 수식에 의해 대기압을 산출하고 대기압 학습이 이루어지도록 하고 있다.In the above method, the atmospheric pressure is calculated by the above equation, and the atmospheric pressure is learned.

그러나, 상기한 방법은 연료 차단 상태가 되면 무조건 경사지로 인식하여 대기압을 모델링한 값에 의해 계산한 후 증가시키는 오류를 보완하기 위한 방법이지만, 연료 차단시 드로틀 밸브가 닫혀 상기 식의 분모값이 0 이 되므로, 사용할 수 없는 방법이었다.However, the method described above is a method for compensating for an error that is recognized as an inclined slope unconditionally when the fuel cutoff state is calculated and then increased by calculating the atmospheric pressure based on a modeled value. As it became, it was not usable method.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명한 것으로서, 차량이 주행하는 노면의 경사 상태와 고도 상태에 따라 대기압을 산출하고 대기압 학습이 이루어지도록 하는 차량의 대기압 보상 방법을 제공하는 것을 목적으로 한다. Accordingly, an object of the present invention is to provide an atmospheric pressure compensation method of a vehicle that calculates atmospheric pressure according to an inclination state and an altitude state of a road on which a vehicle is traveling, and learns atmospheric pressure. It is done.

이하, 첨부한 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

상기 목적을 달성하기 위한 본 발명에 따른 차량의 대기압 보상 방법은 드로틀 폐쇄 구간인지 및 연료 공급이 중단되었는지 판단하는 단계와, 드로틀 폐쇄 및 연료 공급 중단 상태에서, 차량의 감속 비율을 환산하여 차량이 고지대에서 저지대로 운행하는지 판단하는 단계와, 차량이 고지대에서 저지대로 운행시, 맵 센서를 이용하여 흡기 매니폴드의 압력 변화율을 측정하고, 이렇게 측정한 압력 변화율을 기준값과 환산하여 현재의 대기압을 산출하는 단계로 구성되는 것을 특징으로 한다.
여기서, 상기 차량이 고지대에서 저지대로 운행하는지 판단하는 단계에서는 차량의 감속 비율이 "-" 또는 도식화된 감소율보다 작을 경우에 고지대에서 저지대로 운행하는 것으로 판단한다. The atmospheric pressure compensation method of the vehicle according to the present invention for achieving the above object is determined whether the throttle closed section and the fuel supply is stopped, and in the state of the throttle closed and fuel supply, the deceleration rate of the vehicle is converted to the high ground Determining whether the vehicle is operating at low altitude, and when the vehicle is operating at low altitude, measuring the rate of change of pressure of the intake manifold using a map sensor, and calculating the present atmospheric pressure by converting the measured rate of change of pressure with a reference value. It is characterized by consisting of steps.
Here, in the step of determining whether the vehicle runs to the lowland in the highlands, when the deceleration rate of the vehicle is smaller than "-" or the illustrated reduction rate, it is determined that the vehicle runs to the lowland.

또한, 상기 측정한 압력 변화율을 기준값과 환산하는 단계에서는 다음의 수식을 이용하여 대기압을 산출한다. In the step of converting the measured pressure change rate into a reference value, the atmospheric pressure is calculated using the following equation.

P대기압 = P대기압,표준상태 + 1/△t∫(PIn-Manifold,표준상태-PIn-Manifold,현상태)dt
여기서, P대기압 는 보정된 대기압이고, P대기압,표준상태 는 해수면 상태에서의 대기압이고, PIn-Manifold,표준상태 는 해수면 상태에서의 대기압하에서의 흡기 매니폴드 압력이고, PIn-Manifold,현상태) 는 고지대에서 저지대 주행시 현재 고도에 따른 대기압하에서의 흡기 매니폴드 압력이다. P atmospheric pressure = P atmospheric pressure, standard state + 1 / △ t∫ (P In-Manifold, standard state -P In-Manifold, current state ) dt
Where P atmospheric pressure is the corrected atmospheric pressure, P atmospheric pressure, standard state is atmospheric pressure at sea level, P In-Manifold, standard state is intake manifold pressure under atmospheric pressure at sea level, P In-Manifold, Is the intake manifold pressure under atmospheric pressure at current altitude when driving at low altitude.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예의 구성을 상세히 설명한다. 단, 앞에서 설명한 종래 기술과 동일한 구성에 대한 설명은 생략하고 동일한 구성에 대해서는 동일한 부호를 사용한다. Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of a preferred embodiment of the present invention. However, the description of the same configuration as in the prior art described above is omitted, and the same reference numerals are used for the same configuration.

도 1은 본 발명에 의한 차량의 대기압 보상 방법의 구성을 나타내는 플로우 차트이다.
상기 차량의 대기압 보상 방법은 드로틀 폐쇄 구간인지 및 연료 공급이 중단되었는지 판단하는 단계(ST10)와, 드로틀 폐쇄 및 연료 공급 중단 상태에서, 차량의 감속 비율을 환산하여 차량이 고지대에서 저지대로 운행하는지 판단하되, 차량의 감속 비율이 "-" 또는 도식화된 감소율보다 작을 경우에 고지대에서 저지대로 운행하는 것으로 판단하는 단계(ST20)와, 차량이 고지대에서 저지대로 운행시, 맵 센서를 이용하여 흡기 매니폴드의 압력 변화율을 측정하고(ST30), 이렇게 측정한 압력 변화율을 기준값과 환산하되, 아래의 수식으로 환산하여(ST40) 현재의 대기압을 산출하는 단계(ST50)로 이루어진다.
P대기압 = P대기압,표준상태 + 1/△t∫(PIn-Manifold,표준상태-PIn-Manifold,현상태)dt1 is a flow chart showing the configuration of the atmospheric pressure compensation method of a vehicle according to the present invention.
The method for compensating the atmospheric pressure of the vehicle may include determining whether the vehicle is in a throttle closed section and whether fuel supply is stopped (ST10), and in a state in which the throttle is closed and fuel supply is stopped, determining whether the vehicle operates in the lowlands by converting the deceleration rate of the vehicle. However, when the deceleration rate of the vehicle is less than "-" or the illustrated reduction rate, the step of determining that the vehicle runs to the low ground in the highlands (ST20), and when the vehicle runs to the low ground in the highlands, the intake manifold using the map sensor Measuring the pressure change rate of (ST30), and converting the measured pressure change rate with a reference value, it is converted into the following formula (ST40) consists of calculating the current atmospheric pressure (ST50).
P atmospheric pressure = P atmospheric pressure, standard state + 1 / △ t∫ (P In-Manifold, standard state -P In-Manifold, current state ) dt

삭제delete

상기와 같은 본 발명의 작용을 설명하면 다음과 같다. Referring to the operation of the present invention as described above are as follows.

우선, 차량의 주행 도중 드로틀이 폐쇄되어 있는지 판단하고, 연료 공급이 중단되어 있는지 판단한다.
다음, 차량이 고지대에서 저지대로 주행하는지 판단한다. First, it is determined whether the throttle is closed while the vehicle is running, and it is determined whether the fuel supply is stopped.
Next, it is determined whether the vehicle travels from the highlands to the lowlands.

상기한 판단 결과 차량이 고지대에서 저지대로 주행하지 않는 경우에는 대기압 보상을 수행하지 않는다. As a result of the above determination, if the vehicle does not travel to the lowlands in the highlands, atmospheric pressure compensation is not performed.

차량이 고지대에서 저지대로 주행하는 것은 드로틀 폐쇄 상태 및 연료 공급 중단 상태에서 차량의 감속 비율을 측정하여 판단한다.
이때, 드로틀 폐쇄 후, 연료 차단 상태에서의 차속 감소율을 기어 단수별로 미리 도식화하는 것이 바람직하다. It is determined by measuring the deceleration rate of the vehicle in the throttle closed state and the refueling state when the vehicle travels from the highlands to the low land.
At this time, after closing the throttle, it is preferable to plot the vehicle speed reduction rate in the fuel cut state in advance for each gear stage.

즉, 차량의 드로틀이 폐쇄되어 있는 상태에서는 엔진의 연소가 없는 상태이다. 엔진의 연소가 없는 상태에서 차량의 감속 비율이 - 또는 도식화된 감소율 보다 작게 나타나면, 즉 감속이 없거나 속력이 증가하는 것으로 판단되면 차량은 고지대에서 저지대로 주행하는 것을 의미한다. In other words, there is no combustion of the engine when the throttle of the vehicle is closed. If the deceleration rate of the vehicle is less than-or the illustrated reduction rate in the absence of engine combustion, that is, if there is no deceleration or the speed is determined to be high, then the vehicle is driven to the lowlands in the highlands.

등판 주행은 기존의 방법에 의해 학습이 가능하므로 상세한 설명은 생략한다. The climbing run can be learned by the conventional method, so a detailed description thereof will be omitted.

또한, 해수면 상태의 대기압하에서의 흡기 매니폴드 압력 변화율을 측정하고(기준값), 엔진의 흡기 매니폴드(In Manifold)에 장착되어 있는 맵 센서(map sensor)를 사용하여 현재 주행도중의 대기압하에서의 압력 변화율을 측정한 후, 위의 기준값과 환산하여 환산된 값을 저장하여 대기압을 보상하도록 한다. In addition, the rate of change of the intake manifold pressure under atmospheric pressure at sea level is measured (reference value), and the rate of change of pressure under atmospheric pressure during driving is measured by using a map sensor mounted on the intake manifold of the engine. After the measurement, the converted value is converted into the above reference value to compensate for the atmospheric pressure.

이때, 대기압을 보상하는 수식은 다음의 식과 같은 방법을 사용한다. At this time, the equation for compensating the atmospheric pressure uses the same method as the following equation.

P대기압 = P대기압,표준상태 + 1/△t∫(PIn-Manifold,표준상태-PIn-Manifold,현상태)dt
여기서, P대기압 는 보정된 대기압이고, P대기압,표준상태 는 해수면 상태에서의 대기압이고, PIn-Manifold,표준상태 는 해수면 상태에서의 대기압하에서의 흡기 매니폴드 압력이고, PIn-Manifold,현상태) 는 고지대에서 저지대 주행시 현재 고도에 따른 대기압하에서의 흡기 매니폴드 압력이다. P atmospheric pressure = P atmospheric pressure, standard state + 1 / △ t∫ (P In-Manifold, standard state -P In-Manifold, current state ) dt
Where P atmospheric pressure is the corrected atmospheric pressure, P atmospheric pressure, standard state is atmospheric pressure at sea level, P In-Manifold, standard state is intake manifold pressure under atmospheric pressure at sea level, P In-Manifold, Is the intake manifold pressure under atmospheric pressure at current altitude when driving at low altitude.

상기와 같이 구성된 본 발명은, 차량이 고지대에서 저지대로 주행할 때 차량의 안정적인 주행을 위해 대기압 수치를 보정하고 보정된 수치에 따라 엔진이 동작되도록 하여 안정적인 주행이 이루어지도록 하는 효과를 갖는다. According to the present invention configured as described above, when the vehicle travels to a lowland in the highlands, the atmospheric pressure value is corrected for stable driving of the vehicle, and the engine is operated according to the corrected value so that the stable driving is achieved.

Claims (4)

드로틀 폐쇄 구간인지 및 연료 공급이 중단되었는지 판단하는 단계(ST10);Determining whether the throttle is closed and whether the fuel supply is stopped (ST10); 드로틀 폐쇄 및 연료 공급 중단 상태에서, 차량의 감속 비율을 환산하여 차량이 고지대에서 저지대로 운행하는지 판단하는 단계(ST20); In a state in which the throttle is closed and the fuel supply is stopped, determining whether the vehicle is driven to the low ground in the highlands by converting the deceleration rate of the vehicle (ST20); 차량이 고지대에서 저지대로 운행시, 맵 센서를 이용하여 흡기 매니폴드의 압력 변화율을 측정하고, 이렇게 측정한 압력 변화율을 기준값과 환산하여 현재의 대기압을 산출하는 단계(ST30~ST50);When the vehicle runs from the high ground to the low land, measuring a pressure change rate of the intake manifold using a map sensor, and calculating the current atmospheric pressure by converting the measured pressure change rate into a reference value (ST30 to ST50); 로 구성되는 것을 특징으로 하는 차량의 대기압 보상 방법. Atmospheric pressure compensation method of a vehicle, characterized in that consisting of. 삭제delete 청구항 1에 있어서, 상기 차량이 고지대에서 저지대로 운행하는지 판단하는 단계에서 차량의 감속 비율이 "-" 또는 도식화된 감소율보다 작을 경우에 고지대에서 저지대로 운행하는 것으로 판단하는 것을 특징으로 하는 차량의 대기압 보상 방법. The atmospheric pressure of the vehicle according to claim 1, wherein in the step of determining whether the vehicle runs to the low ground in the highlands, when the deceleration rate of the vehicle is less than "-" or the illustrated reduction rate, the atmospheric pressure of the vehicle is determined to operate in the lowlands. Compensation method. 청구항 1에 있어서, 상기 측정한 압력 변화율을 기준값과 환산하는 단계(ST40)는 다음 수식에 의해 계산되는 것을 특징으로 하는 차량의 대기압 보상 방법. The method of claim 1, wherein the step of converting the measured rate of change of pressure into a reference value (ST40) is calculated by the following equation. P대기압 = P대기압,표준상태 + 1/△t∫(PIn-Manifold,표준상태-PIn-Manifold,현상태)dtP atmospheric pressure = P atmospheric pressure, standard state + 1 / △ t∫ (P In-Manifold, standard state -P In-Manifold, current state ) dt 여기서, P대기압 는 보정된 대기압이고, P대기압,표준상태 는 해수면 상태에서의 대기압이고, PIn-Manifold,표준상태 는 해수면 상태에서의 대기압하에서의 흡기 매니폴드 압력이고, PIn-Manifold,현상태) 는 고지대에서 저지대 주행시 현재 고도에 따른 대기압하에서의 흡기 매니폴드 압력이다. Where P atmospheric pressure is the corrected atmospheric pressure, P atmospheric pressure, standard state is atmospheric pressure at sea level, P In-Manifold, standard state is intake manifold pressure under atmospheric pressure at sea level, P In-Manifold, Is the intake manifold pressure under atmospheric pressure at current altitude when driving at low altitude.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980045523A (en) * 1996-12-10 1998-09-15 박병재 Atmospheric pressure compensation device of vehicle and its method
KR19980052391A (en) * 1996-12-24 1998-09-25 김영귀 How to increase fuel in vehicles at high altitudes
KR19990059862A (en) * 1997-12-31 1999-07-26 정몽규 Kickdown shift control device of automatic transmission at highland and its method
KR20010095414A (en) * 2000-03-30 2001-11-07 류정열 Measuring method of air pressure of diesel engine by using boost pressure sensor
KR20030047057A (en) * 2001-12-07 2003-06-18 현대자동차주식회사 Method of correcting a measuring instrument
KR20050048043A (en) * 2003-11-18 2005-05-24 현대자동차주식회사 Manifold absolute pressure control method of vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980045523A (en) * 1996-12-10 1998-09-15 박병재 Atmospheric pressure compensation device of vehicle and its method
KR19980052391A (en) * 1996-12-24 1998-09-25 김영귀 How to increase fuel in vehicles at high altitudes
KR19990059862A (en) * 1997-12-31 1999-07-26 정몽규 Kickdown shift control device of automatic transmission at highland and its method
KR20010095414A (en) * 2000-03-30 2001-11-07 류정열 Measuring method of air pressure of diesel engine by using boost pressure sensor
KR20030047057A (en) * 2001-12-07 2003-06-18 현대자동차주식회사 Method of correcting a measuring instrument
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