KR100941217B1 - Duty Control Method of Electric Control Valve of Variable Capacity Compressor - Google Patents
Duty Control Method of Electric Control Valve of Variable Capacity Compressor Download PDFInfo
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- KR100941217B1 KR100941217B1 KR1020080056629A KR20080056629A KR100941217B1 KR 100941217 B1 KR100941217 B1 KR 100941217B1 KR 1020080056629 A KR1020080056629 A KR 1020080056629A KR 20080056629 A KR20080056629 A KR 20080056629A KR 100941217 B1 KR100941217 B1 KR 100941217B1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1009—Distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/12—Kind or type gaseous, i.e. compressible
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
본 발명은 가변용량 압축기의 전기 제어 밸브의 듀티 제어 인자로 차량의 가속을 이용함으로써 차량의 가속시에 동력성능을 향상시키고, 가변용량 압축기의 전기 제어 밸브의 듀티 제어 인자로 차량의 감속을 이용함으로써 감속시에 제동손실을 감소시킬 수 있는 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법에 관한 것이다.The present invention improves the power performance when the vehicle is accelerated by using the acceleration of the vehicle as the duty control factor of the electric control valve of the variable displacement compressor, and by using the deceleration of the vehicle as the duty control factor of the electric control valve of the variable displacement compressor. The present invention relates to a duty control method of an electric control valve of a variable displacement compressor capable of reducing braking loss during deceleration.
가변용량 압축기, ECV, 제어, 가속, 감속, 동력성능, 제동손실 Variable displacement compressor, ECV, control, acceleration, deceleration, power performance, braking loss
Description
본 발명은 가변용량 압축기의 전기 제어 밸브에 관한 것으로, 특히 가변용량 압축기의 전기 제어 밸브의 듀티 제어 인자로 차량의 가속을 이용함으로써 차량의 가속시에 동력성능을 향상시키고, 가변용량 압축기의 전기 제어 밸브의 듀티 제어 인자로 차량의 감속을 이용함으로써 감속시에 제동손실을 감소시킬 수 있는 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법에 관한 것이다.The present invention relates to an electric control valve of a variable displacement compressor, and in particular, by using the acceleration of the vehicle as a duty control factor of the electric control valve of the variable displacement compressor to improve the power performance during the acceleration of the vehicle, the electric control of the variable displacement compressor The present invention relates to a duty control method of an electric control valve of a variable displacement compressor capable of reducing braking loss during deceleration by using a deceleration of a vehicle as a duty control factor of a valve.
공조장치용 가변용량 압축기는 냉매 토출량의 조절을 위하여 압력 조절 밸브를 구비한다. 압력 조절 밸브로는 기계적 힘으로 구동되는 압력 조절 밸브와 전기력으로 구동되는 압력 조절 밸브가 있다. 최근에는 전기력으로 구동되는 압력 조절 밸브가 주로 사용되며, 이를 ECV(Electronic Control Valve)라 한다.The variable displacement compressor for an air conditioner is provided with a pressure regulating valve for adjusting the amount of refrigerant discharged. Pressure regulating valves include mechanically driven pressure regulating valves and electrically driven pressure regulating valves. Recently, an electric force-driven pressure regulating valve is mainly used, which is called an ECV (Electronic Control Valve).
ECV가 사용되는 가변용량 압축기는 ECV의 듀티(Duty)에 의해 사판의 기울기가 변화되며, 사판의 기울기에 따라 압축기의 냉매 토출량이 결정된다. 즉, ECV의 듀티가 높은 경우 시간당 압축기의 냉매 토출량이 증가하며, ECV의 듀티가 낮은 경 우 시간당 압축기의 냉매 토출량이 감소한다.In the variable displacement compressor using ECV, the inclination of the swash plate is changed by the duty of the ECV, and the refrigerant discharge amount of the compressor is determined by the inclination of the swash plate. That is, when the ECV duty is high, the refrigerant discharge amount of the compressor per hour increases, and when the ECV duty is low, the refrigerant discharge amount of the compressor per hour decreases.
현재의 일반적인 ECV가 사용되는 가변용량 압축기는 증발기 온도센서, 차외기온센서, 차내기온센서, 일사량센서 및 냉각수온센서로부터의 신호들을 이용하여 열부하를 계산한 후 이에 따른 목표 증발기 온도를 연산하여 ECV의 듀티를 제어하여 증발기 온도를 제어하거나, 목표 증발기 온도를 설정하여 목표 증발기 온도와 증발기의 현재 온도를 이용한 PID 제어를 통하여 ECV의 듀티를 계산 및 제어하여 증발기의 온도를 제어하고 있다.The current variable-capacity compressor that uses general ECV uses the signals from the evaporator temperature sensor, the outside temperature sensor, the inboard temperature sensor, the insolation sensor and the coolant temperature sensor to calculate the heat load and then calculate the target evaporator temperature accordingly. The duty is controlled to control the evaporator temperature, or the target evaporator temperature is set to control the evaporator temperature by calculating and controlling the duty of the ECV through PID control using the target evaporator temperature and the current temperature of the evaporator.
그런데, 차량의 가속시에 ECV의 듀티가 높으면, 공조장치가 차량에 부하로 작용함으로써 차량의 가속을 방해하는 문제가 있다. 하지만, 현재의 ECV가 사용되는 가변용량 압축기는 ECV의 듀티 제어에 차량의 가속과 같은 차량의 운전조건을 고려하지 않고 있는 실정이다.However, if the duty of the ECV is high at the time of acceleration of the vehicle, there is a problem that the air conditioning apparatus acts as a load on the vehicle, thereby preventing the acceleration of the vehicle. However, the variable capacity compressor using the current ECV does not consider the driving conditions of the vehicle such as the acceleration of the vehicle in the duty control of the ECV.
따라서, 본 발명의 목적은 가변용량 압축기의 ECV의 듀티 제어 인자로 차량의 가속을 이용함으로써 차량의 가속시에 동력성능을 향상시키는 가변용량 압축기의 ECV의 듀티 제어방법을 제공하는 것이다.Accordingly, it is an object of the present invention to provide a duty control method of an ECV of a variable displacement compressor that improves power performance upon acceleration of the vehicle by using the acceleration of the vehicle as the duty control factor of the ECV of the variable displacement compressor.
또한, 본 발명의 목적은 가변용량 압축기의 ECV의 듀티 제어 인자로 차량의 감속을 이용함으로써 감속시에 제동손실을 감소시킬 수 있는 가변용량 압축기의 ECV의 듀티 제어방법을 제공하는 것이다.It is also an object of the present invention to provide a duty control method of ECV of a variable displacement compressor that can reduce the braking loss during deceleration by using the deceleration of the vehicle as the duty control factor of the ECV of the variable displacement compressor.
상기한 바의 목적을 달성하기 위한 본 발명 실시 예에 따른 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법은, 가속 신호를 읽는 단계와; 상기 가속 신호가 가속 판단의 임계값을 초과하는가를 판단하는 단계와; 상기 가속 신호가 가속 판단의 임계값을 초과하면, 목표 증발기 온도에 따른 목표 전기 제어 밸브의 듀티가 50%를 초과하는가를 판단하는 단계와; 상기 목표 전기 제어 밸브의 듀티가 50%를 초과하면, 상기 목표 전기 제어 밸브의 듀티에서 일정 듀티를 감산한 듀티로 상기 전기 제어 밸브를 제어하는 단계와; 퓨얼 컷 상태인가를 판단하는 단계와; 상기 퓨얼 컷 상태이면, 냉매의 온도가 0℃미만인가를 판단하는 단계와; 상기 냉매의 온도가 0℃미만이 아니면, 감속에 의해 발생하는 회생제동에 의한 전력으로 압축기의 듀티를 최대로 제어하는 단계;를 포함한다.According to an aspect of the present invention, there is provided a duty control method of an electric control valve of a variable displacement compressor, the method including: reading an acceleration signal; Determining whether the acceleration signal exceeds a threshold of acceleration determination; If the acceleration signal exceeds a threshold of acceleration determination, determining whether a duty of a target electric control valve according to a target evaporator temperature exceeds 50%; If the duty of the target electric control valve exceeds 50%, controlling the electric control valve with a duty subtracted a certain duty from the duty of the target electric control valve; Determining whether the fuel is in a cut state; Determining whether a temperature of a coolant is less than 0 ° C. in the fuel cut state; If the temperature of the refrigerant is less than 0 ° C, controlling the duty of the compressor to the maximum by the power of the regenerative braking generated by the deceleration.
상기 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법은 상기 목표 전기 제어 밸브의 듀티가 50%를 초과하지 않으면, 목표 전기 제어 밸브의 듀티에서 일정 듀티를 감산한 듀티로 일정시간 동안 상기 전기 제어 밸브를 제어하는 단계와; 일 정시간이 경과 후에는 상기 목표 전기 제어 밸브의 듀티로 상기 전기 제어 밸브를 일정시간 동안 제어하는 단계를 더 포함한다.The duty control method of the electric control valve of the variable displacement compressor, if the duty of the target electric control valve does not exceed 50%, the electric control valve for a predetermined time by a duty subtracted a certain duty from the duty of the target electric control valve. Controlling; After a predetermined time has elapsed, the step of controlling the electric control valve for a predetermined time with the duty of the target electric control valve.
상기 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법은 상기 가속 신호가 가속 판단의 임계값을 초과하지 않으면, 상기 목표 전기 제어 밸브의 듀티로 상기 전기 제어 밸브를 일정시간 동안 제어하는 단계를 더 포함한다.The duty control method of the electric control valve of the variable displacement compressor further includes the step of controlling the electric control valve for a predetermined time with the duty of the target electric control valve, if the acceleration signal does not exceed the threshold value of the acceleration determination. .
상기 가속 신호를 읽는 단계는, 엔진 전자 제어 유닛과 통신하는 단계와; 상기 엔진 전자 제어 유닛과 통신하여 쓰로틀 포지션 센서 신호 및 엑셀 페달 센서 신호를 읽는 단계를 포함한다.The reading of the acceleration signal may comprise: communicating with an engine electronic control unit; In communication with the engine electronic control unit, reading a throttle position sensor signal and an excel pedal sensor signal.
삭제delete
상기 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법은 감속에 의해 발생하는 회생제동에 의한 전력으로 압축기의 듀티를 최대로 제어하는 동안 상기 퓨얼 컷 상태인가를 판단하는 단계와; 상기 퓨얼 컷 상태이면, 감속에 의해 발생하는 회생제동에 의한 전력으로 압축기의 듀티를 최대로 제어하는 단계와; 상기 퓨얼 컷 상태가 아니면 목표 압축기의 듀티에서 일정 듀티를 감산한 듀티로 일정시간 동안 상기 압축기를 구동하는 단계를 더 포함한다.The duty control method of the electric control valve of the variable displacement compressor includes the steps of: determining whether the fuel cut state occurs while controlling the duty of the compressor to the maximum by the regenerative braking power generated by the deceleration; If the fuel cut state, controlling the duty of the compressor to the maximum by using regenerative braking generated by deceleration; The method may further include driving the compressor for a predetermined time with a duty obtained by subtracting a predetermined duty from a duty of a target compressor if the fuel cut state is not.
상기 가변용량 압축기의 전기 제어 밸브의 듀티 제어방법은 상기 퓨얼 컷 상태가 아니거나, 상기 냉매의 온도가 0℃미만이면, 상기 목표 전기 제어 밸브의 듀 티로 일정시간 동안 상기 전기 제어 밸브를 제어하는 단계를 더 포함한다.The duty control method of the electric control valve of the variable displacement compressor is a step of controlling the electric control valve for a predetermined time with the duty of the target electric control valve when the fuel cut state is not or the temperature of the refrigerant is less than 0 ℃. It further includes.
상기 퓨얼 컷 상태인가를 판단하는 단계는, 엔진 전자 제어 유닛과 통신하는 단계와; 상기 엔진 전자 제어 유닛으로부터 상기 퓨얼 컷 신호를 읽어드리는 단계와; 상기 퓨얼 컷 신호로 판단하는 단계를 포함한다.Determining whether the fuel cut state comprises: communicating with an engine electronic control unit; Reading the fuel cut signal from the engine electronic control unit; And determining the fuel cut signal.
본 발명의 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법은 가변용량 압축기의 ECV의 듀티 제어 인자로 차량의 가속을 이용하여 차량의 가속시에 가변용량 압축기의 부하가 작아지도록 ECV를 제어함으로써 차량의 가속시에 차량의 가속시에 동력성능을 향상시킬 수 있다. 그리고, 가속 시에 차량에 부하가 작아짐으로써 연비가 향상되는 장점도 있다.The duty control method of the ECV of the variable capacity compressor according to an embodiment of the present invention by controlling the ECV so that the load of the variable capacity compressor is reduced during the acceleration of the vehicle by using the acceleration of the vehicle as the duty control factor of the ECV of the variable capacity compressor. It is possible to improve the power performance at the time of acceleration of the vehicle. In addition, there is an advantage that the fuel economy is improved by reducing the load on the vehicle during acceleration.
그리고, 본 발명의 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법은 가변용량 압축기의 ECV의 듀티 제어 인자로 차량의 감속을 이용하여 차량의 감속시에 감속에 의해 발생하는 회생제동에 의한 전력으로 압축기의 듀티를 최대로 제어하면 퓨얼 컷 종료 이후에 냉매가 저온 상태를 유지하도록 함으로써 차량의 감속시에 제동손실을 감소시킬 수 있다. 따라서, 퓨얼 컷 종료 이후에 냉매의 온도를 낮추기 위한 공조장치의 연료소모를 줄일 수 있다.In addition, the duty control method of the ECV of the variable displacement compressor according to the embodiment of the present invention uses the deceleration of the vehicle as the duty control factor of the ECV of the variable displacement compressor. Therefore, if the duty of the compressor is controlled to the maximum, the braking loss can be reduced when the vehicle is decelerated by keeping the refrigerant at a low temperature after the end of the fuel cut. Therefore, fuel consumption of the air conditioner for lowering the temperature of the refrigerant after the end of the fuel cut can be reduced.
이하, 도 1 내지 도 4를 이용하여 본 발명의 바람직한 실시 예에 대하여 설 명하기로 한다.Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 4.
도 1은 본 발명의 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법을 나타내는 순서도이다.1 is a flowchart illustrating a duty control method of an ECV of a variable displacement compressor according to an exemplary embodiment of the present invention.
도 1을 참조하면, 본 발명의 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법은 먼저, 엔진 전자 제어 유닛과의 통신하여(S10) 쓰로틀 포지션 센서(TPS)로부터의 신호, 엑셀 페달 센서(APS)로부터의 신호 등의 가속 신호를 읽어들인다(S12).Referring to FIG. 1, a duty control method of an ECV of a variable displacement compressor according to an exemplary embodiment of the present invention may include a signal from a throttle position sensor TPS and an accelerator pedal sensor in communication with an engine electronic control unit (S10). An acceleration signal such as a signal from the APS) is read (S12).
그리고, 쓰로틀 포지션 센서(TPS)로부터의 신호 또는 엑셀 페달 센서(APS)로부터의 신호 등의 가속 신호가 가속 판단의 임계값(Threshold)을 초과하는가를 판단한다(S14).Then, it is determined whether the acceleration signal, such as the signal from the throttle position sensor TPS or the signal from the accelerator pedal sensor APS, exceeds the threshold of the acceleration determination (S14).
S14 단계에서 쓰로틀 포지션 센서(TPS)로부터의 신호, 엑셀 페달 센서(APS)로부터의 신호 등의 가속 신호가 가속 판단의 임계값을 초과하면, 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 현재 차량이 가속 중이라고 판단하고 공조장치가 차량의 부하로 작용하는가를 판단한다. 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 공조장치가 차량의 부하로 작용하는가를 판단하기 위해, 목표 증발기 온도에 따른 목표 ECV의 듀티가 50%를 초과하는가를 판단한다(S16). S16 단계에서의 목표 증발기 온도에 따른 목표 ECV의 듀티는 일반적으로 사용되는 방법으로 계산된다.If the acceleration signal such as the signal from the throttle position sensor (TPS), the signal from the accelerator pedal sensor (APS) in step S14 exceeds the threshold of the acceleration determination, the duty control method of the ECV of the variable displacement compressor of the present invention is currently It is determined that the vehicle is accelerating, and it is determined whether the air conditioner acts as a load on the vehicle. In the duty control method of the ECV of the variable displacement compressor of the present invention, in order to determine whether the air conditioner acts as a load of the vehicle, it is determined whether the duty of the target ECV according to the target evaporator temperature exceeds 50% (S16). The duty of the target ECV according to the target evaporator temperature in step S16 is calculated by the method generally used.
S16 단계의 판단 결과, 목표 증발기 온도에 따른 목표 ECV의 듀티가 50%를 초과하면, 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 차량의 가속 중에 공조장치가 차량의 부하로 작용하고 있다고 판단하여, 공조장치의 부하를 떨어뜨리기 위해 현재의 목표 ECV의 듀티에서 일정 듀티를 감산한 듀티로 ECV를 제어한다(S18). 예를 들어, 목표 ECV의 듀티가 60%라면 20%를 감산하여 40%의 듀티로 ECV를 제어한다.As a result of the determination in step S16, when the duty of the target ECV according to the target evaporator temperature exceeds 50%, the duty control method of the ECV of the variable displacement compressor of the present invention determines that the air conditioner acts as a load of the vehicle during acceleration of the vehicle. In order to reduce the load of the air conditioning apparatus, the ECV is controlled by a duty obtained by subtracting a certain duty from the duty of the current target ECV (S18). For example, if the duty of the target ECV is 60%, 20% is subtracted to control the ECV at 40% duty.
도 2를 참조하면, ECV의 듀티(a)가 줄어들면 가변용량 압축기의 부하가 작아짐으로써 가속 시에 차량에는 부하(a)가 덜 작용하며, 차량은 부하가 덜 작용함으로써 가속을 방해받지 않을 수 있다. 그리고, 가속 시에 차량에 부하가 작아짐으로써 연비가 향상되는 장점도 있다.Referring to FIG. 2, when the duty (a) of the ECV is reduced, the load of the variable capacity compressor is reduced, so that the load (a) is less applied to the vehicle during acceleration, and the vehicle is not disturbed by the acceleration. have. In addition, there is an advantage that the fuel economy is improved by reducing the load on the vehicle during acceleration.
S16 단계의 판단 결과, 목표 증발기 온도에 따른 목표 ECV의 듀티가 50%를 초과하지 않으면, 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 차량의 가속 중에 공조장치가 차량의 부하로 크게 작용하지 않는다고 판단하여, 현재의 목표 ECV의 듀티에서 일정 듀티를 감산한 듀티로 일정시간(예를 들어, 약 3 ~ 5초) 동안 ECV를 제어한다(S20). 그리고, 일정시간이 경과 후에는 목표 ECV의 듀티로 ECV를 일정시간 동안 제어하고(S22), S10 단계로 리턴한다.As a result of the determination in step S16, when the duty of the target ECV according to the target evaporator temperature does not exceed 50%, the duty control method of the ECV of the variable displacement compressor of the present invention does not act as a load of the vehicle during the acceleration of the vehicle. If not, the ECV is controlled for a predetermined time (for example, about 3 to 5 seconds) to a duty obtained by subtracting a certain duty from the duty of the current target ECV (S20). After a predetermined time has elapsed, the ECV is controlled for a predetermined time with the duty of the target ECV (S22), and the process returns to step S10.
상기 S14 단계에서 쓰로틀 포지션 센서(TPS)로부터의 신호, 엑셀 페달 센서(APS)로부터의 신호 등의 가속 신호가 가속 판단의 임계값을 초과하지 않으면, 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 차량이 가속 중이 아니라고 판단하여 목표 ECV의 듀티로 ECV를 일정시간 동안 제어하고(S22), S10 단계로 리턴한다.If the acceleration signal such as the signal from the throttle position sensor (TPS), the signal from the accelerator pedal sensor (APS), etc. in step S14 does not exceed the threshold value of the acceleration determination, the duty control method of the ECV of the variable displacement compressor of the present invention. Determines that the vehicle is not accelerating and controls the ECV for a predetermined time with the duty of the target ECV (S22), and returns to step S10.
상기 S18 단계는 상기 S20 단계 및 S22 단계가 실행되는 동안 실행된다.The step S18 is executed while the steps S20 and S22 are executed.
그리고, 본 발명의 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법은 엔진 전자 제어 유닛과의 통신하여(S30) 퓨얼 컷(Fuel Cut) 신호를 읽어드려(S32) 퓨얼 컷 상태인가를 판단한다(S34).In addition, the ECV duty control method of the variable displacement compressor according to the embodiment of the present invention communicates with the engine electronic control unit (S30) to read the fuel cut signal (S32) to determine whether the fuel cut state. (S34).
S34 단계에서 퓨얼 컷 상태이면, 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 현재 차량이 감속 중이라고 판단하고 냉매의 온도가 0℃미만인가를 판단한다(S36).If the fuel cut state in step S34, the duty control method of the ECV of the variable displacement compressor of the present invention determines that the vehicle is currently decelerating and determines whether the temperature of the refrigerant is less than 0 ℃ (S36).
S36 단계의 판단 결과, 냉매의 온도가 0℃미만이 아니면, 감속에 의해 발생하는 회생제동에 의한 전력으로 압축기의 듀티를 최대로 제어하여(S38) 냉매의 온도를 낮춘다. 본 발명의 가변용량 압축기의 ECV의 듀티 제어방법이 감속시에 냉매의 온도가 0℃미만인가를 판단하는 이유는 냉매의 온도가 0℃미만인 경우에 압축기의 듀티를 높이면 냉매가 얼어버릴 수 있기 때문이다.As a result of the determination in step S36, if the temperature of the coolant is less than 0 ° C, the duty of the compressor is controlled to the maximum by power of regenerative braking generated by deceleration (S38) to lower the temperature of the coolant. The reason why the ECV duty control method of the variable displacement compressor of the present invention determines whether the temperature of the refrigerant is lower than 0 ° C. during deceleration is that the refrigerant may freeze if the duty of the compressor is increased when the temperature of the refrigerant is lower than 0 ° C. to be.
본 발명의 가변용량 압축기의 ECV의 듀티 제어방법은 S38 단계를 수행하는 동안 퓨얼 컷 상태인가를 계속 판단한다(S40). S40 단계에서 퓨얼 컷 상태이면, S38 단계를 계속 수행한다. 하지만, S40 단계에서 퓨얼 컷 상태가 아니면 차량의 감속 중이 아니라고 판단하여 현재의 목표 압축기의 듀티에서 일정 듀티를 감산한 듀티로 일정시간 동안 압축기를 구동한다(S42). 그리고, 일정시간이 경과 후에는 S30 단계로 리턴한다.The duty control method of the ECV of the variable displacement compressor of the present invention continuously determines whether the fuel cut state is performed while performing the step S38 (S40). If the fuel cut state in step S40, step S38 is continued. However, if it is determined that the fuel cut state is not in the deceleration of the vehicle in step S40, the compressor is driven for a predetermined time with a duty obtained by subtracting a certain duty from the duty of the current target compressor (S42). After a predetermined time elapses, the process returns to step S30.
도 4를 참조하면, 감속에 의해 발생하는 회생제동에 의한 전력으로 압축기의 듀티(c)를 최대로 제어하면 퓨얼 컷 종료 이후에 냉매가 저온 상태를 유지한다. 따라서, 퓨얼 컷 종료 이후에 냉매의 온도를 낮추기 위한 공조장치의 연료소모(d) 를 줄일 수 있다. 이에 따라, 감속시에 연비가 향상되는 장점도 있다.Referring to FIG. 4, when the duty c of the compressor is controlled to the maximum by the power of regenerative braking generated by deceleration, the refrigerant maintains a low temperature state after the fuel cut end. Therefore, the fuel consumption d of the air conditioner for lowering the temperature of the refrigerant after the end of the fuel cut can be reduced. Accordingly, there is also an advantage that fuel economy is improved at the time of deceleration.
S34 단계의 판단 결과, 퓨얼 컷 상태가 아니거나, S36 단계의 판단 결과, 냉매의 온도가 0℃미만이면, 목표 ECV의 듀티로 일정시간 동안 ECV를 제어하고(S44), S30 단계로 리턴한다.If the determination result of step S34 is not the fuel cut state or the determination result of step S36, if the temperature of the refrigerant is less than 0 ° C, the ECV is controlled for a predetermined time with the duty of the target ECV (S44), and the process returns to step S30.
상기 S44 단계는 상기 S38 단계 내지 S42 단계가 실행되는 동안 실행된다.The step S44 is executed while the steps S38 to S42 are executed.
도 1은 본 발명의 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법을 나타내는 순서도,1 is a flowchart illustrating a duty control method of an ECV of a variable displacement compressor according to an exemplary embodiment of the present invention.
도 2는 ECV 듀티를 감소시의 공조장치 부하를 설명하기 위한 도면,2 is a view for explaining an air conditioner load when reducing ECV duty;
도 3은 본 발명의 다른 실시 예에 따른 가변용량 압축기의 ECV의 듀티 제어방법을 나타내는 순서도3 is a flowchart illustrating a duty control method of an ECV of a variable displacement compressor according to another embodiment of the present invention.
도 4는 압축기의 듀티에 따른 냉매의 온도와, 냉매의 온도에 따른 공조장치의 연료 소모를 설명하기 위한 도면이다.4 is a view for explaining the fuel consumption of the air conditioner according to the temperature of the refrigerant and the temperature of the refrigerant according to the duty of the compressor.
Claims (8)
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| KR20140099721A (en) * | 2013-02-04 | 2014-08-13 | 한라비스테온공조 주식회사 | air conditioner having a variable capacity swash plate type compressor and mehtod for operating of the compressor |
| US11133760B2 (en) | 2018-12-04 | 2021-09-28 | Danfoss (Tianjin) Ltd. | Method for controlling compressor braking, frequency converter and variable speed compressor |
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