KR19980047787A - Fuel injection quantity control method when starting a vehicle - Google Patents
Fuel injection quantity control method when starting a vehicle Download PDFInfo
- Publication number
- KR19980047787A KR19980047787A KR1019960066301A KR19960066301A KR19980047787A KR 19980047787 A KR19980047787 A KR 19980047787A KR 1019960066301 A KR1019960066301 A KR 1019960066301A KR 19960066301 A KR19960066301 A KR 19960066301A KR 19980047787 A KR19980047787 A KR 19980047787A
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- South Korea
- Prior art keywords
- fuel injection
- injection amount
- vehicle
- starting
- engine speed
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
본 발명은 차량 시동시 연료분사량 제어방법에 관한 것으로서, 차량 시동시 기본연료분사량()과 엔진회전수 보정계수()의 비교로 시동시 연료분사량(TST)을 계산하고 적정값을 콘트롤유니트에 입력시켜 연료분사량을 제어하도록 하는 것이다. 이에 따라 엔진수온에 따라 시동시에 최적의 연료분사량을 보정하게 된다.The present invention relates to a fuel injection amount control method for starting a vehicle, the basic fuel injection amount ( ) And engine speed correction factor ( ), The fuel injection amount (TST) is calculated at start-up and an appropriate value is input to the control unit to control the fuel injection amount. Accordingly, the optimum fuel injection amount is corrected at the start-up according to the engine water temperature.
Description
본 발명은 차량 시동시 연료분사량 제어방법에 관한 것으로서, 상세하게는 시동시 기본연료분사량()과 엔진회전수 보정계수()의 비교로 시동시 연료분사량(TST)를 계산하여 이 적정값을 연료분사밸브 제어장치(콘트롤유니트)에 입력시켜 연료분사량을 제어하도록 하는 차량 시동시 연료분사량 제어방법에 관한 것이다.The present invention relates to a method for controlling fuel injection amount when starting a vehicle, and in detail, a basic fuel injection amount during starting ( ) And engine speed correction factor ( The fuel injection amount control method at the time of starting a vehicle which calculates fuel injection amount (TST) at the start and inputs this appropriate value to a fuel injection valve control apparatus (control unit) to control fuel injection amount.
일반적으로 엔진의 연소실에 분사되는 적정한 연료량분사는 엔진의 성능 및 연비 등의 결과를 따르게 하는 것으로 차량의 성능을 결정짓는 중요한 요소이며, 이는 전자제어엔진 차량의 여러 조건에 따라 컨트롤유니트에서 적정한 연료의 분사량을 설정하여 수행하게 된다.In general, the proper amount of fuel injected into the combustion chamber of the engine is an important factor in determining the performance of the vehicle by following the results of the engine performance and fuel economy, and this is an important factor in determining the performance of the fuel in the control unit according to various conditions of the electronic control engine vehicle. It is performed by setting the injection amount.
본 발명은 상기한 문제점을 감안하여 안출한 것으로서, 본 발명의 목적은 엔진냉각수온에 따라 연료의 실린더내벽 부착량, 기화율, 실제 압축비 등을 고려하여 최적의 연료분사량을 시동시 보정하도록 하는 차량 시동시 연료분사량 제어방법을 제공하는 데 있다.The present invention has been made in view of the above-described problems, and an object of the present invention is to start the vehicle to correct the optimum fuel injection amount at the start in consideration of the inner cylinder wall adhesion amount, vaporization rate, and actual compression ratio of the fuel according to the engine cooling water temperature. To provide a fuel injection amount control method in the city.
도 1은 본 발명의 플로우차트,1 is a flowchart of the present invention,
도 2는 시동시 기본연료분사량과 엔진냉각수온과의 상관 그래프,2 is a graph of correlation between the basic fuel injection amount and the engine cooling water temperature at start-up;
도 3은 엔진회전수 보정계수와 엔진회전수와의 상관 그래프,3 is a correlation graph between the engine speed correction coefficient and the engine speed,
도 4는 엔진회전수 보정계수의 가이드값과 엔진냉각수온과의 상관 그래프.4 is a graph of correlation between the guide value of the engine speed correction coefficient and the engine coolant temperature.
(도면의 주요부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)
TST ; 시동시 연료분사량; 시동시 기본연료분사량TST; Fuel injection amount at start ; Basic fuel injection amount at start-up
; 엔진회전수 보정계수 ; Engine Speed Correction Factor
; 엔진회전수 보정계수의 가이드값 ; Guide value of engine speed correction factor
THw ; 엔진냉각수온THw; Engine Cooling Water Temperature
상기한 목적을 이루기 위하여 본 발명은 차량 시동시 기본연료분사량()과 엔진회전수 보정계수()의 비교로 시동시 연료분사량(TST)을 계산하고 적정값을 콘트롤유니트에 입력시켜 연료분사량을 제어하도록 하는 것을 특징으로 하는 차량 시동시 연료분사량 제어방법을 제공한다.In order to achieve the above object, the present invention provides a basic fuel injection amount when starting a vehicle ( ) And engine speed correction factor ( A fuel injection amount control method for starting a vehicle, characterized by calculating the fuel injection amount (TST) at the start and controlling the fuel injection amount by inputting an appropriate value to the control unit.
이하 첨부된 예시도면을 참조하여 본 발명의 바람직한 실시예를 보다 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 플로우차트로서, 시동시 연료분사량 계산의 루틴(Routine)이다. 먼저 시동시 기본연료분사량()을 엔진냉각수온(THw)으로부터 시동시 기본연료분사량과 엔진냉각수온과의 상관관계를 나타낸 도 2의 그래프에 따라 구한다.1 is a flowchart of the present invention, which is a routine for calculating fuel injection amount at startup. Basic fuel injection amount at start-up ) Is obtained according to the graph of FIG. 2 showing the correlation between the basic fuel injection amount and the engine cooling water temperature at the start from the engine cooling water temperature (THw).
엔진회전수 보정계수()를 엔진회전수(NE)로부터 엔진회전수 보정계수와 엔진회전수와의 상관관계를 나타낸 도 3의 그래프에 따라 구한다.Engine RPM Correction Factor ) Is obtained from the engine speed NE according to the graph of FIG. 3 showing the correlation between the engine speed correction coefficient and the engine speed.
다음 엔진회전수 보정계수의 가이드값()을 엔진냉각수온(THw)로부터 엔진회전수 보정계수의 가이드값과 엔진냉각수온과의 상관관계를 나타낸 도 4의 그래프에 따라 구한다.Guide value of the next engine speed correction factor ( ) Is calculated according to the graph of FIG. 4 showing the correlation between the guide value of the engine speed correction coefficient and the engine coolant temperature from the engine coolant temperature THw.
다음에는 엔진회전수 보정계수()와 엔진회전수 보정계수의 가이드값(KNEST MAX)을 비교하여 의 경우 KNEST=로 계산한다. 이때 의 경우 KNEST=로 하고 여기에서 엔진회전수 보정계수(KNEST)의 상한값을 규제한다.Next, the engine speed correction factor ( ) And the guide value (KNEST MAX) of the engine speed correction coefficient For KNEST = Calculate At this time For KNEST = The upper limit value of the engine speed correction coefficient (KNEST) is regulated here.
다음, KNEST에 의해 시동시 연료분사량을 계산하고 루틴을 종료한다. 이 경우 KNEST의 상한값 규제는 구체적으로 수온 10∼20℃ 이상으로부터 효과적으로 정도를 설정한다.next The fuel injection amount is calculated at the start by KNEST and the routine is terminated. In this case, the upper limit regulation of KNEST specifically sets the degree effectively from water temperature 10-20 degreeC or more.
시동후 엔진냉각수온(THw)이 상승함에 따라 엔진회전수 보정계수의 가이드값()이 감소하여 큰 보정계수를 갖지 않아도 되므로, 엔진회전수 보정계수에 엔진 냉각수온의 변화에 의한 연료의 실린더 벽면 부착량, 기화율, 실제 압축비의 영향을 반영하여 차량의 시동시 최적의 연료분사량을 보정할 수 있게 된다.As the engine coolant temperature (THw) rises after starting, the guide value of the engine speed correction coefficient ( Since it is not necessary to have a large correction coefficient due to the decrease in the engine speed correction factor, the optimum fuel injection amount is determined at the start of the vehicle by reflecting the influence of the cylinder wall adhesion amount, the vaporization rate, and the actual compression ratio of the fuel caused by the engine coolant temperature change. You can correct it.
이상과 같이 본 발명은 엔진회전수 보정계수에 엔진냉각수온이 고저 가이드값을 설정하여 엔진회전수 보정계수에 냉각수온의 변화에 따라 시동시 최적의 연료분사량 제어로 연비절감, 시동성, 진동성능 향상으로 차량의 상품성을 향상시킬 수 있다.As described above, the present invention sets the engine coolant temperature high and low guide value in the engine speed correction coefficient to improve fuel economy, startability, and vibration performance by controlling the fuel injection amount at start-up according to the change in the coolant temperature in the engine speed correction coefficient. This can improve the merchandise of the vehicle.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960066301A KR19980047787A (en) | 1996-12-16 | 1996-12-16 | Fuel injection quantity control method when starting a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960066301A KR19980047787A (en) | 1996-12-16 | 1996-12-16 | Fuel injection quantity control method when starting a vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980047787A true KR19980047787A (en) | 1998-09-15 |
Family
ID=66444457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960066301A Withdrawn KR19980047787A (en) | 1996-12-16 | 1996-12-16 | Fuel injection quantity control method when starting a vehicle |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980047787A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100841511B1 (en) * | 2006-08-29 | 2008-06-25 | 혼다 기켄 고교 가부시키가이샤 | Fuel injection control |
-
1996
- 1996-12-16 KR KR1019960066301A patent/KR19980047787A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100841511B1 (en) * | 2006-08-29 | 2008-06-25 | 혼다 기켄 고교 가부시키가이샤 | Fuel injection control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19961216 |
|
| PG1501 | Laying open of application | ||
| PC1203 | Withdrawal of no request for examination | ||
| WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |