KR20040046103A - Method for cooling fan control of vehicle - Google Patents
Method for cooling fan control of vehicle Download PDFInfo
- Publication number
- KR20040046103A KR20040046103A KR1020020073923A KR20020073923A KR20040046103A KR 20040046103 A KR20040046103 A KR 20040046103A KR 1020020073923 A KR1020020073923 A KR 1020020073923A KR 20020073923 A KR20020073923 A KR 20020073923A KR 20040046103 A KR20040046103 A KR 20040046103A
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- cooling fan
- vehicle
- information
- temperature sensor
- vehicle speed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/026—Thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/66—Vehicle speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2037/00—Controlling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
본 발명은 차량의 냉각 팬 제어에 관한 것으로, 더 상세하게는 트립 컴퓨터(Trip Computer)와 ECU간의 통신으로 차량의 순간적인 엔진 부하 정보를 판독하여 부하 정도에 따라 냉각 팬의 구동을 제어하도록 하는 차량의 냉각 팬 제어방법에 관한 것이다.The present invention relates to a control of a cooling fan of a vehicle, and more particularly, a vehicle that reads the instantaneous engine load information of a vehicle through communication between a trip computer and an ECU to control the driving of the cooling fan according to the degree of load. It relates to a cooling fan control method of the.
차량에서 엔진의 과열을 방지하고, 적정의 온도를 유지하여 최적의 엔진 조건을 유지시켜 주는 냉각수의 온도는 냉각 팬에 의해 조정되는데, 상기 냉각 팬의 구동 및 속도는 냉각수온 센서의 신호에 의해 제어되어 진다.The temperature of the coolant, which prevents the engine from overheating in the vehicle and maintains the optimum temperature and maintains the optimum engine conditions, is controlled by the cooling fan, and the driving and speed of the cooling fan are controlled by the signal of the cooling water temperature sensor. It is done.
그러나, 냉각수온 센서가 고장이 나거나 정상적인 신호가 ECU에 검출되지 않을 경우 ECU는 현재의 냉각수온을 알 수 없는 상태이므로, 냉각 팬을 항상 최고의 속도로 구동시켜 엔진이 과열되는 것을 방지하고 있다.However, when the cooling water temperature sensor fails or a normal signal is not detected by the ECU, the ECU is in a state in which the current cooling water temperature is unknown. Therefore, the cooling fan is always driven at the highest speed to prevent the engine from overheating.
그러나, 냉각 팬이 항상 최고의 속도로 구동되는 경우 배터리의 충방전 특성을 저하시켜 배터리 수명의 단축과 차량내 각 부하에 안정적인 전원을 공급하지 못하게 되어 안정된 엔진 상태를 유지할 수 없는 문제점이 있다.However, when the cooling fan is always driven at the highest speed, there is a problem in that the charge and discharge characteristics of the battery are degraded, thereby shortening the battery life and not supplying stable power to each load in the vehicle, thereby preventing a stable engine state.
또한, 모터의 소음과 진동이 과다하게 발생되어 운전자에게 신뢰성을 저하시키게 되고, 모터의 수명을 단축시키는 문제가 발생된다.In addition, the noise and vibration of the motor is excessively generated to reduce the reliability to the driver, the problem of shortening the life of the motor occurs.
이를 개선하기 위한 방법으로 냉각수온 센서가 고장나는 경우 판독되는 차속에 따라 냉각 팬의 구동을 저속, 중속, 고속으로 제어하는 방법이 적용되고 있으나, 이의 경우 냉각수온 센서나 차속센서가 고장이 발생하는 경우에는 기존과 동일하게 냉각 팬을 고속으로 구동 제어하도록 하고 있다.As a way to improve this, a method of controlling the operation of the cooling fan at a low speed, a medium speed, or a high speed is applied according to the reading of the vehicle speed when the cooling water temperature sensor fails. In this case, the cooling fan is driven at high speed in the same manner as before.
상기와 같이 냉각수온 센서 및 차속센서의 신호를 이용하는 경우에 대한 단점을 보완하기 위하여 크랭크 각 센서 혹은 캠 센서의 신호를 이용하여 엔진 회전수를 검출한 다음 트랜스밋션의 최종 기어비를 계산하여 냉각 팬의 구동 속도를 조정하는 방법과 휠 스피드 센서의 신호를 이용하여 차속을 검출한 다음 이에 따라 냉각 팬의 구동 속도를 조정하는 방법 및 냉각수온 센서의 고장시 새로운 장치를 설치하여 냉각 수온을 감지하도록 하는 다수의 방법 등이 제시되어 있다.In order to compensate for the disadvantages of using the signals of the cooling water temperature sensor and the vehicle speed sensor as described above, the engine speed is detected using the signal of the crank angle sensor or the cam sensor, and then the final gear ratio of the transmission is calculated to calculate the How to adjust the driving speed, detect the vehicle speed by using the signal of the wheel speed sensor, and then adjust the driving speed of the cooling fan accordingly, and install a new device to detect the cooling water temperature when the cooling water temperature sensor fails. And the like are presented.
그러나, 상기한 바와 같은 방법의 적용에서 엔진 회전수와 최종 기어비에 따른 냉각 팬 구동 제어는 수동 변속기를 장착하는 차량의 경우 기어비를 알기 위한 별도의 추가적인 장치가 설치되어야 하므로, 추가적인 비용의 상승이 초래되는 단점이 있다.However, in the application of the method described above, the cooling fan drive control according to the engine speed and the final gear ratio requires an additional device for knowing the gear ratio in the case of a vehicle equipped with a manual transmission, resulting in an additional cost increase. There is a disadvantage.
본 발명은 상기와 같은 문제점을 해결하기 위하여 발명한 것으로, 그 목적은 냉각 팬의 구동을 제어하기 위하여 냉각수온 센서와 차속센서의 고장에 대비하여 추가적인 센서나 장치를 구비하지 않고 차량에 장착되는 트립 컴퓨터와 엔진 제어장치간의 통신을 통해 트립 컴퓨터에 저장된 차량의 순간 연료 공급량이나 연비 및 부하 등에 각종 차량의 주행 정보를 실시간으로 입력받아 부하 정도에 따라 냉각 팬의 구동을 제어하도록 한 것이다.The present invention has been invented to solve the above problems, the purpose of which is to provide a trip to the vehicle without the additional sensor or device in preparation for the failure of the cooling water temperature sensor and the vehicle speed sensor to control the driving of the cooling fan. Through the communication between the computer and the engine control device receives the driving information of the various vehicles in real time, such as the fuel supply amount, fuel consumption and load of the vehicle stored in the trip computer in real time to control the driving of the cooling fan according to the degree of load.
도 1은 본 발명에 따른 차량의 냉각 팬 제어장치에 대한 개략적인 구성도.1 is a schematic configuration diagram of a cooling fan control apparatus of a vehicle according to the present invention.
도 2는 본 발명에 따라 차량의 냉각 팬 제어를 수행하는 일 실시예의 흐름도.2 is a flow diagram of one embodiment for performing cooling fan control of a vehicle in accordance with the present invention.
상기와 같은 목적을 실현하기 위한 본 발명은 차량의 상태정보를 검출하여 엔진의 시동이 온을 유지하고 있는지를 판단하는 과정과; 상기에서 엔진 시동이 온을 유지하고 있는 상태이면 냉각수온 센서 및 차속센서가 고장인지를 판단하는 과정과; 상기에서 냉각수온 센서 및 차속센서가 정상이면 통상의 냉각 팬 제어를 수행하고, 냉각수온 센서 및 차속센서가 고장이면 네트워크를 통해 트립 컴퓨터의 정보를 실시간적으로 판독하는 과정과; 상기 판독되는 트립 컴퓨터의 정보로부터 엔진 부하 및 각종 정보를 학습 진단하는 과정 및; 상기 학습 결과에 따른 엔진 부하의 순간적인 변동에 따라 냉각 팬의 구동을 제어하는 과정을 포함한다.The present invention for realizing the above object comprises the steps of detecting whether the engine is kept on by detecting the state information of the vehicle; Determining whether the cooling water temperature sensor and the vehicle speed sensor are broken when the engine start is maintained in the above state; Performing normal cooling fan control when the cooling water temperature sensor and the vehicle speed sensor are normal, and reading information of the trip computer in real time through a network when the cooling water temperature sensor and the vehicle speed sensor are broken; Learning and diagnosing engine load and various information from the information of the trip computer to be read; And controlling the driving of the cooling fan according to the instantaneous fluctuation of the engine load according to the learning result.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 일 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1에서 알 수 있는 바와 같이 본 발명에 따른 차량의 냉각 팬 제어장치는 트립 컴퓨터(10)와 이에 네트워크를 통해 연결되는 ECU(20)로 구성된다.As can be seen in FIG. 1, a cooling fan control apparatus for a vehicle according to the present invention includes a trip computer 10 and an ECU 20 connected thereto via a network.
상기에서 트립 컴퓨터(10)는 차량의 주행거리 검출 및 지시와 순간적인 연료공급량의 검출, 연비의 산출, 현재의 잔여 연료량 검출 및 지시, 현재의 연료량을 이용하여 주행 가능한 거리의 산출 및 표시를 수행한다.The trip computer 10 detects and instructs the mileage of the vehicle, instantaneously detects the fuel supply amount, calculates fuel economy, detects and instructs the current remaining fuel amount, and calculates and displays the distance that can be driven using the current fuel amount. do.
ECU(20)는 상기 트립 컴퓨터(10)와 연결된 네트워크를 통해 수신되는 각종 정보를 분석하여 차량의 제어에 적용하고, 냉각수온을 검출하는 수온 센서 및 차속센서가 고장으로 판단되는 경우 상기 트립 컴퓨터(10)에서 검출되는 순간 연료 공급량이나 연비 및 각종 주행정보 등을 종합하는 순간적인 부하 변동에 따라 냉각 팬의 구동을 제어한다.The ECU 20 analyzes various types of information received through the network connected to the trip computer 10 and applies it to the control of the vehicle, and when the water temperature sensor and the vehicle speed sensor detecting the coolant temperature are determined to be faulty, the trip computer ( The driving of the cooling fan is controlled in accordance with the instantaneous load fluctuation which aggregates the fuel supply amount, fuel economy and various traveling information, etc. detected in 10).
상기한 기능을 포함하는 본 발명의 구성을 적용하여 냉각 팬 구동 제어를 수행하는 동작에 대하여 설명하면 다음과 같다.Referring to the operation of performing the cooling fan drive control by applying the configuration of the present invention including the above function as follows.
냉각 팬 제어를 위한 루틴이 개시되면 ECU(20)는 차량의 각종 상태정보, 즉 엔진이 시동 온을 유지하고 있는지에 대한 정보와 냉각수온 센서의 정보, 차속에 대한 정보 및 네트워크를 통해 트립 컴퓨터(10)의 정보를 검출하며(S101), 차량의 엔진 시동이 온을 유지하고 있는지를 판단한다(S102).When the routine for controlling the cooling fan is started, the ECU 20 transmits various trip information of the vehicle, that is, information on whether the engine is maintained on, information on the coolant temperature sensor, information on the vehicle speed, and a trip computer (network). Information of 10) is detected (S101), and it is determined whether the engine start of the vehicle is kept on (S102).
상기에서 차량의 엔진 시동이 오프 상태이면 냉각 팬 제어를 위한 루틴을 수행하지 않고, 엔진 시동이 온을 유지하고 있는 상태이면 냉각수온 센서 및 차속센서의 신호가 검출되지 않는 센서의 고장 상태인지를 판단한다(S103).If the engine start of the vehicle is in the off state, the routine for controlling the cooling fan is not performed. If the engine is kept on, it is determined whether the sensors of the cooling water temperature sensor and the vehicle speed sensor are not detected. (S103).
상기에서 냉각수온 센서 및 차속센서가 정상적인 상태인 것으로 판단되면 통상의 제어를 수행하고, 냉각수온 센서 및 차속센서가 고장인 상태인 것으로 판단되면 네트워크를 통해 트립 컴퓨터(10)의 정보를 실시간으로 검출한다(S105).If it is determined that the coolant temperature sensor and the vehicle speed sensor are in a normal state, normal control is performed. If the coolant temperature sensor and the vehicle speed sensor are determined to be in a malfunction state, the information of the trip computer 10 is detected in real time through a network. (S105).
이후, 상기 트립 컴퓨터(10)에서 실시간으로 검출되는 엔진 회전수, 주행 속도 및 에어컨의 온/오프 등에 대한 엔진 부하 및 각종 정보를 학습을 통해 진단하며(S106), 상기의 진단 결과에 따른 순간적인 부하 변동에 따라 냉각 팬의 구동 속도를 조절하여 차량의 상태 조건에 적합한 냉각 팬 구동이 수행되도록 한다(S107).Thereafter, the engine load and various information about the engine speed, the traveling speed, and the on / off of the air conditioner detected in real time by the trip computer 10 are diagnosed through learning (S106), and the instantaneous according to the diagnosis result is obtained. The driving speed of the cooling fan is adjusted according to the load variation so that the cooling fan driving suitable for the condition of the vehicle is performed (S107).
이상에서 설명한 바와 같이 본 발명은 냉각수온 센서 및 차속센서가 고장나는 경우 트립 컴퓨터로부터 순간적인 엔진 부하 변동을 검출하여 냉각 팬의 구동을 제어함으로써 차량 상태에 따른 효과적인 냉각 팬 제어로 엔진 과열을 방지하고, 냉각 팬 모터의 구동을 최적화시켜 소음 및 진동을 배제하며, 모터 수명을 연장시켜 내구성을 향상시키고, 상품성을 향상시킨다.As described above, the present invention detects instantaneous engine load change from the trip computer when the cooling water temperature sensor and the vehicle speed sensor fail, and controls the driving of the cooling fan to prevent engine overheating with effective cooling fan control according to the vehicle condition. It optimizes the operation of the cooling fan motor to eliminate noise and vibration, extends the motor life, improves durability, and improves the marketability.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2006071005A1 (en) | 2004-12-31 | 2006-07-06 | Kmw Inc. | Apparatus for using a wireless communication base station in common |
KR101536337B1 (en) * | 2013-11-21 | 2015-07-13 | ㈜에코플러스 | Control system for adjusting intake air temperature of dual fuel engine |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE3638131A1 (en) * | 1986-11-08 | 1988-05-11 | Audi Ag | COOLING SYSTEM OF A WATER-COOLED VEHICLE INTERNAL COMBUSTION ENGINE |
KR19980038802A (en) * | 1996-11-26 | 1998-08-17 | 배순훈 | Driving device of cooling fan motor and its control method |
JP2000220454A (en) * | 1999-01-27 | 2000-08-08 | Unisia Jecs Corp | Cooling fan control device in engine |
KR20020080675A (en) * | 2001-04-17 | 2002-10-26 | 현대자동차주식회사 | Method for cooling fan controling of engine in vehicle |
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2002
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006071005A1 (en) | 2004-12-31 | 2006-07-06 | Kmw Inc. | Apparatus for using a wireless communication base station in common |
KR101536337B1 (en) * | 2013-11-21 | 2015-07-13 | ㈜에코플러스 | Control system for adjusting intake air temperature of dual fuel engine |
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