KR100205460B1 - Fluid measuring method of vehicle condition - Google Patents
Fluid measuring method of vehicle condition Download PDFInfo
- Publication number
- KR100205460B1 KR100205460B1 KR1019960024396A KR19960024396A KR100205460B1 KR 100205460 B1 KR100205460 B1 KR 100205460B1 KR 1019960024396 A KR1019960024396 A KR 1019960024396A KR 19960024396 A KR19960024396 A KR 19960024396A KR 100205460 B1 KR100205460 B1 KR 100205460B1
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- flow
- radiator
- flow rate
- measuring
- measure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/50—Correcting or compensating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
본 발명은 자동차의 냉각 회로상의 유량을 측정하기 위한 것으로 특히, 실차 조건에서의 냉각수 유량을 정확하게 측정하기 위하여 실차 조건의 라디에이터 및 워터펌프를 장착한 상태에서 순환회로 관로상의 압력차를 측정하는 단계와, 상기 측정 단계에서 압력 값을 확보한 후, 라디에이터 및 워터펌프를 제거하고, 게이트 밸브 및 유량계를 장착하는 단계와, 상기 냉각수 관로상에 장착된 게이트 밸브의 개폐량을 조절하여 상기 라디에이터 장착시 측정한 압력값과 일치시켜 유량계 장착으로 인한 유동저항을 보상하는 단계로 실제 유량을 측정하는 실차조건에서의 유량 측정 방법을 제공한 것이다.The present invention is to measure the flow rate on the cooling circuit of the vehicle, in particular, in order to accurately measure the flow rate of the coolant in the actual vehicle conditions, the step of measuring the pressure difference on the circulating circuit conduit with a radiator and a water pump in the actual vehicle conditions and After securing the pressure value in the measuring step, removing the radiator and the water pump, mounting a gate valve and a flow meter, and adjusting the opening and closing amount of the gate valve mounted on the cooling water conduit to measure when the radiator is mounted Compensating the flow resistance due to the flow meter in accordance with the pressure value to provide a flow measurement method under the actual vehicle conditions to measure the actual flow rate.
Description
제1도는 실차 조건에서의 유량 측정 상태를 보인 개략도1 is a schematic view showing a flow measurement state under the actual vehicle conditions
제2도는 유량 측정을 위한 종래의 냉각수 순환 회로도2 is a conventional coolant circulation circuit diagram for flow measurement
제3도는 본 발명에 따른 압력차의 측정 상태를 보인 도면3 is a view showing a measurement state of the pressure difference according to the present invention
제4도는 본 발명에 따른 유량 측정 상태를 설명하기 위한 도면4 is a view for explaining the flow measurement state in accordance with the present invention
* 도면중 주요 부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 엔진 2 : 워터펌프1: engine 2: water pump
5 : 모터 6 : 라디에이터5: motor 6: radiator
7, 7a : 유량계 8 : 압력계7, 7a: flow meter 8: pressure gauge
9 : 게이트 밸브 10 : 콘트롤러9: gate valve 10: controller
본 발명은 자동차의 냉각 회로상의 유량을 측정하기 위한 것으로 특히, 실차 조건에서의 냉각수 유량을 정확하게 측정하기 위한 유량 측정 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for measuring the flow rate on a cooling circuit of an automobile, and more particularly relates to a flow rate measuring method for accurately measuring the flow rate of cooling water under actual vehicle conditions.
일반적으로 엔진의 개발 초기 단계에서 실차 조건에서의 냉각수 유량의 측정은 중요한 관리항목으로 되어 있다.In general, the measurement of coolant flow rate under actual vehicle conditions is an important control item in the early stage of engine development.
즉, 냉각수 계통은 엔진의 과열을 예방하고, 이상적인 냉각 사이클을 형성하는 중요한 역활을 하여 냉각수의 흐름에 기계적 무리를 동반하지 않는 범위내에서 최적화될 필요가 있다.In other words, the coolant system needs to be optimized within the range that prevents engine overheating and plays an important role in forming an ideal cooling cycle so that the flow of coolant does not involve mechanical forces.
냉각수의 유량은 어떤 특정 조건을 유지하는 상태로 테이블화된 시험장치를 배열시켜 냉각수 회로를 구성함으로서 실차 조건에서의 유량을 데이터로 처리하여 그 결과치로 냉각수 회로상의 유량이 실제 요구치에 가까운가를 판단하여 최적 유량인가를 확인한다.The flow rate of the coolant is configured by arranging the test apparatus tabled in a state in which the specific condition is maintained, thereby forming a coolant circuit to process the flow rate under actual vehicle conditions as data, and as a result, to determine whether the flow rate on the coolant circuit is close to the actual requirement. Check the optimum flow rate.
냉각수 유량 측정을 위해 선행되는 냉각계통의 배치형태는 제1도와 같이 워터펌프(2)가 있는 엔진(1)을 테스트 베드(3)위에 올려놓고, 상기 워터펌프(2)측 풀리(4)에는 별도의 구동용 모터(5)를 연결하는 한편, 라디에이터(6)와 유량계(7)를 상기 엔진(1)측에 관로로 연결하여 냉각수가 일정한 경로를 순환하는 형태로 배치하여 유로상의 유량을 유량계(7)를 통해 측정한다.The arrangement of the preceding cooling system for the measurement of the coolant flow rate places the engine 1 with the water pump 2 on the test bed 3 as shown in Fig. 1, and the pulley 4 on the water pump 2 side While connecting a separate drive motor (5), while connecting the radiator (6) and the flow meter (7) in the pipeline to the engine 1 side by arranging the cooling water in the form of circulating a constant path flow rate on the flow path Measure through (7).
냉각수의 순환은 엔진(1)특 워터펌트(2)를 구동용 모터(5)의 구동을 통해 순환 시키는 강제 순환방식을 사용한다.The circulation of the coolant uses a forced circulation method that circulates the engine 1 special water pump 2 through the driving of the driving motor 5.
유량 측정방법은 엔진(1)을 비롯한 냉각계통에 냉각수를 채우고, 워터펌프(2)의 풀리(4)에 모터(5)를 연결시킨후, 모터(5)를 구동시켜 냉각수를 순환 시키는 과정에서 냉각 회로상의 유량을 측정한다.In the flow rate measuring method, the cooling system including the engine 1 is filled with cooling water, the motor 5 is connected to the pulley 4 of the water pump 2, and the motor 5 is driven to circulate the cooling water. Measure the flow rate on the cooling circuit.
그러나, 상기 냉각계통을 소정의 냉각회로로 구성하여 유량을 측정하는데 사용되는 유량계(7)의 설치 조건을 보면 유량계(7)의 크기가 지나치게 크고, 또한 냉각회로의 관로상에서 양 방면에 스트레이트관을 적용하여 냉각회로를 구성하게 됨으로서 관로를 이동하는 유체에 관성이 생기고, 유량계(7)를 지나는 부분에서 와류가 발생하여 유체 유동저항이 발생하여 유량측정에 있어서 유량측정의 정확도가 떨어지는 단점이 있고 측정 오차가 생기는 문제점이 있었다.However, in view of the installation conditions of the flowmeter 7 used to measure the flow rate by configuring the cooling system with a predetermined cooling circuit, the size of the flowmeter 7 is too large, and a straight pipe is formed on both sides of the cooling circuit. By forming a cooling circuit by applying it, inertia is generated in the fluid moving in the pipeline, vortices are generated in the part passing through the flow meter (7), and fluid flow resistance is generated. There was a problem that an error occurs.
따라서 본 발명의 목적은 실차조건에서의 냉각수 유량 측정에 정확성을 기하는 유량측정 방법을 제공하는 것이다.Accordingly, it is an object of the present invention to provide a flow measurement method that ensures accuracy in measuring the coolant flow rate under actual vehicle conditions.
이러한 목적을 달성하기 위한 본 발명의 특징은 실차 조건의 라디에이터 및 워터펌프를 장착한 상태에서 이 라디에이터의 양측 순환회로 관로상의 압력차를 측정하는 단계와, 상기 측정 단계에서 압력값을 확보한후, 라디에이터를 제거하고, 게이트 밸브 및 유량계를 장착하는 단계와, 상기 냉각수 관로상에 장착된 게이트 밸브의 개폐량을 조절하여 상기 라디에이터 장착시 측정한 압력값과 일치시켜 유량계 장착으로 인한 유동저항을 보상하는 단계로 실제 유량을 측정하는 냉각수 유량 측정 방법에 있다.A characteristic of the present invention for achieving this object is the step of measuring the pressure difference on the circulation circuit pipes on both sides of the radiator with a radiator and a water pump under actual vehicle conditions, and after securing the pressure value in the measuring step, Removing the radiator, mounting the gate valve and the flow meter, and adjusting the opening and closing amount of the gate valve mounted on the cooling water conduit to match the pressure value measured when the radiator is mounted to compensate for the flow resistance due to the flow meter mounting. The cooling water flow measurement method is to measure the actual flow rate in a step.
본 발명에 따른 실차조건에서의 냉각수 측정은 제3도와 같이 실차 조건의 라디에이터(6) 및 워터펌프(2)를 장착한 상태에서 순환회로 관로상의 압력차 P1-P2를 압력계(8)를 통해 측정한다.Measurement of the coolant in the actual vehicle condition according to the present invention measures the pressure difference P1-P2 on the circulation circuit pipe through the pressure gauge 8 with the radiator 6 and the water pump 2 in the actual vehicle condition as shown in FIG. do.
이러한 압력차의 측정은 라디에이터(6) 및 워터펌프(2)에 제한 되지않고 냉각계통을 구성하는 냉각계통의 특성변화에 대응하여 여타부분에도 적용할 수 있다.The measurement of the pressure difference is not limited to the radiator 6 and the water pump 2, but can be applied to other parts in response to the characteristic change of the cooling system constituting the cooling system.
압력계(8)를 통한 순환회로 관로상의 압력차 P1-P2측정이 끝나면 제4도와 같이 라디에이터(6)를 제거하고, 게이트 밸브(9) 및 유량계(7a)를 장착한다.After the pressure difference P1-P2 measurement on the circulation circuit pipe through the pressure gauge 8 is completed, the radiator 6 is removed as shown in FIG. 4, and the gate valve 9 and the flow meter 7a are mounted.
그후, 콘트롤러(10)측에서 구동용 모터(5)를 제어하여 돌리면 모터(5)는 워터펌프(2)를 회전 시키고, 이 회전력에 의해 냉각 회로상의 냉각수는 엔진(1)과 각 유량계(7a) 및 게이트 밸브(9)를 경유 하면서 순환한다.Thereafter, when the driving motor 5 is controlled and turned on the controller 10 side, the motor 5 rotates the water pump 2, and the cooling water on the cooling circuit is controlled by the rotational force of the engine 1 and each flow meter 7a. ) And the gate valve 9 to circulate.
이때의 냉각수 유동 저항은 저항체 구실을 하는 라디에이터(6)가 사실상 삭제되어 유동 저항이 생기지 않고 비교적 안정된 상태의 흐름을 유지한다.At this time, the coolant flow resistance maintains a relatively stable state of flow without generating a resistance due to the fact that the radiator 6 serving as a resistor is virtually eliminated.
한편, 상기 냉각수의 흐름 조건을 라디에이터(6)가 설치된 실차조건에 근접 시키기 위하여 흐름 자체에 라디에이터(6)가 차지하는 압력차 P1-P2를 측정하여 게이트 밸브(9)의 개폐량을 조절하는데, 측정된 압력차 P1-P2의 값은 각 순환회로의 관로상에 설치된 라디에이터(6)를 장착한 조건에서의 값으로서 게이트 밸브(9)를 조절하여 P1-P2를 라디에이터(6) 및 워터펌프(2) 장착시 측정한 값과 일치 시킨다.On the other hand, to adjust the opening and closing amount of the gate valve 9 by measuring the pressure difference P1-P2 occupied by the radiator 6 in the flow itself in order to bring the coolant flow condition closer to the actual vehicle condition in which the radiator 6 is installed. The value of the pressure difference P1-P2 thus obtained is a condition under which the radiator 6 installed on the conduit of each circulation circuit is mounted and the gate valve 9 is adjusted to convert P1-P2 to the radiator 6 and the water pump 2. ) Match with the measured value when installed.
이때의 유량은 유량계(7a) 장착으로 인한 유동저항이 보상된 값이된다.At this time, the flow rate is a value at which the flow resistance due to the flow meter 7a is mounted.
따라서 본 발명의 측정방법을 적용하면 냉각계통을 소정의 냉각회로로 구성하여 유량을 측정하는데 사용되는 유량계의 크기가 지나치게 크고, 냉각회로의 관로상에서 양 방면에 스트레이트관을 적용하여 냉각회로를 구성하게 됨으로서 관로를 이동하는 유체에 관성이 생기고, 유량계를 지나는 부분에서 와류가 발생하여 유체 유동저항이 발생하여 유량측정에 있어서 유량측정의 정확도가 떨어지는 단점을 개선하여 유량 특정 오차를 줄여 측정 결과치에 정확성을 기하여 유량 측정의 신뢰도를 높힐 수 있는 효과가 있다.Therefore, if the measuring method of the present invention is applied, the size of the flowmeter used to measure the flow rate by configuring the cooling system as a predetermined cooling circuit is too large, and the cooling circuit is configured by applying straight pipes on both sides of the cooling circuit. As a result, inertia is generated in the fluid moving through the pipeline, vortices are generated at the part passing through the flowmeter, and fluid flow resistance is generated, which reduces the accuracy of flow measurement in flow measurement. This has the effect of increasing the reliability of the flow rate measurement.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960024396A KR100205460B1 (en) | 1996-06-27 | 1996-06-27 | Fluid measuring method of vehicle condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960024396A KR100205460B1 (en) | 1996-06-27 | 1996-06-27 | Fluid measuring method of vehicle condition |
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| Publication Number | Publication Date |
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| KR980003536A KR980003536A (en) | 1998-03-30 |
| KR100205460B1 true KR100205460B1 (en) | 1999-07-01 |
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| KR1019960024396A KR100205460B1 (en) | 1996-06-27 | 1996-06-27 | Fluid measuring method of vehicle condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198048A (en) * | 2016-07-06 | 2016-12-07 | 浙江大学 | Cooling system of vehicle cold collateral resistance simulation test experiment platform and method thereof |
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1996
- 1996-06-27 KR KR1019960024396A patent/KR100205460B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198048A (en) * | 2016-07-06 | 2016-12-07 | 浙江大学 | Cooling system of vehicle cold collateral resistance simulation test experiment platform and method thereof |
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| KR980003536A (en) | 1998-03-30 |
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