KR20210007968A - How to restart an internal combustion engine in a hybrid drive system - Google Patents

How to restart an internal combustion engine in a hybrid drive system Download PDF

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KR20210007968A
KR20210007968A KR1020207031689A KR20207031689A KR20210007968A KR 20210007968 A KR20210007968 A KR 20210007968A KR 1020207031689 A KR1020207031689 A KR 1020207031689A KR 20207031689 A KR20207031689 A KR 20207031689A KR 20210007968 A KR20210007968 A KR 20210007968A
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internal combustion
combustion engine
target
clutch moment
clutch
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KR102659179B1 (en
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크리스티안 베버
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섀플러 테크놀로지스 아게 운트 코. 카게
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    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0062—Adapting control system settings
    • B60W2050/0075—Automatic parameter input, automatic initialising or calibrating means
    • B60W2050/0083—Setting, resetting, calibration
    • B60W2050/0088—Adaptive recalibration
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • B60W2510/0652—Speed change rate
    • 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
    • B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
    • B60W2555/20—Ambient conditions, e.g. wind or rain
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/02—Clutches
    • B60W2710/027—Clutch torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

본 발명은 하이브리드 구동계에서 내연기관의 재시동 방법에 관한 것으로, 본 방법에서 하이브리드 분리 클러치(4)는 내연기관(2)과 전기 모터(3)를 분리하거나 연결하고, 하이브리드 분리 클러치(4)가 닫혀 있고 오로지 전기에 의해서만 주행 시, 내연기관(2)은 하이브리드 분리 클러치(4)의 소정의 클러치 모멘트(TTarget)를 이용하여 전기 모터(3)에 의해 재시동된다. 이러한 재시동이 신뢰할만 하게 구현될 수 있는 방법에서, 하이브리드 분리 클러치(4)의 소정의 클러치 모멘트(TTarget)는 내연기관(2)의 재시동 시 적어도 하나의 구동 특정적 및/또는 환경 특정적 매개변수에 따라 변경된다. The present invention relates to a method of restarting an internal combustion engine in a hybrid drive system, in which the hybrid separation clutch 4 separates or connects the internal combustion engine 2 and the electric motor 3, and the hybrid separation clutch 4 is closed. And when driving only by electricity, the internal combustion engine 2 is restarted by the electric motor 3 using a predetermined clutch moment T Target of the hybrid separation clutch 4. In a method in which such a restart can be reliably implemented, the predetermined clutch moment (T Target ) of the hybrid separation clutch 4 is at least one drive-specific and/or environment-specific medium when the internal combustion engine 2 is restarted. It changes according to the variable.

Description

하이브리드 구동계에서 내연기관의 재시동 방법How to restart an internal combustion engine in a hybrid drive system

본 발명은 하이브리드 구동계에서 내연기관의 재시동 방법에 관한 것으로, 본 방법에서 하이브리드 분리 클러치는 내연기관과 전기 모터를 분리하거나 연결하고, 하이브리드 분리 클러치가 닫혀 있고 오로지 전기에 의해서만 주행 시, 내연기관은 하이브리드 분리 클러치의 소정의 클러치 모멘트를 이용하여 전기 모터에 의해 재시동된다.The present invention relates to a method of restarting an internal combustion engine in a hybrid drive system, in which the hybrid separation clutch separates or connects the internal combustion engine and the electric motor, and the hybrid separation clutch is closed and when driving only by electricity, the internal combustion engine is a hybrid It is restarted by the electric motor using the predetermined clutch moment of the separation clutch.

EP 2 193 060 B1으로부터 구동계의 구동 방법이 공지되어 있는데, 상기 구동 방법에서는 하이브리드 구동계에서 전기 모터에 의해 내연기관을 시동시키기 위해 내연기관과 전기 모터 사이에 배치되는 클러치는, 이러한 클러치가 부분적 닫힘에 의해 슬립되어, 내연기관이 시동되는 방식으로 제어되며 폐쇄 및 개방된다.From EP 2 193 060 B1, a method of driving a drivetrain is known, in which a clutch disposed between the internal combustion engine and the electric motor in order to start the internal combustion engine by an electric motor in a hybrid drivetrain is prevented when such a clutch is partially closed. Slipped by, the internal combustion engine is controlled in such a way that it is started and closed and opened.

하이브리드 분리 클러치의 재시동을 위해 일정한 클러치 모멘트를 사용하는 것은 공지되어 있다. 이 모멘트는 매우 부정확하기 때문에 재시동은 운전자에 따라 상이하게 감지될 수 있다. 극단적 경우, 심지어 하이브리드 분리 클러치의 클러치 모멘트가 내연기관을 시동시키기에 충분하지 않을 수 있다.It is known to use a constant clutch moment for restarting a hybrid separation clutch. Because this moment is very inaccurate, restarts can be detected differently depending on the driver. In extreme cases, even the clutch moment of the hybrid separation clutch may not be sufficient to start the internal combustion engine.

본 발명의 기초를 이루는 과제는 하이브리드 구동계에서 내연기관을 재시동하기 위한 방법으로서, 이러한 내연기관이 항상 신뢰할만하게 시동될 수 있는 방법을 제공하는 것이다.An object underlying the present invention is to provide a method for restarting an internal combustion engine in a hybrid drive system, in which such an internal combustion engine can always be started reliably.

본 발명에 따르면, 이러한 과제는, 하이브리드 분리 클러치의 소정의 클러치 모멘트가 내연기관의 재시동 시 적어도 하나의 구동 특정적 및/또는 환경 특정적인 매개변수에 따라 변경됨으로써 해결된다. 특히, 하이브리드 분리 클러치의 소정의 클러치 모멘트가 주어질 때 내연기관이 시동되지 않은 것이 확정되면, 이러한 클러치 모멘트가 증가됨으로써, 재시동이 보장된다.According to the present invention, this problem is solved by changing the predetermined clutch moment of the hybrid separation clutch according to at least one drive specific and/or environment specific parameter upon restart of the internal combustion engine. In particular, when it is determined that the internal combustion engine is not started when a predetermined clutch moment of the hybrid separation clutch is given, this clutch moment is increased, thereby ensuring a restart.

일 형성예에서, 소정의 클러치 모멘트의 변경은 이러한 클러치 모멘트가 제공된 후에 이루어진다. 이를 통해, 소정의 클러치 모멘트는 정확히 하이브리드 구동부의 현재 구동 조건에 맞게 조정될 수 있다.In one configuration, the change of the predetermined clutch moment is made after this clutch moment is provided. Through this, the predetermined clutch moment can be accurately adjusted to the current driving condition of the hybrid drive unit.

유리하게는, 소정의 클러치 모멘트가 제공된 이후부터 하이브리드 구동계의 구동 특정적 매개변수로서 내연기관의 회전수가 모니터링된다. 이러한 회전수는 내연기관의 활성화를 추론하기 위한 매우 간단한 매개변수를 나타내므로, 이러한 회전수를 구동계에 본래 제공되는 회전수 센서들에 의해 모니터링하는 것은 매우 비용 효과적이다.Advantageously, the number of revolutions of the internal combustion engine is monitored as a drive specific parameter of the hybrid drive system after a certain clutch moment is provided. Since this speed represents a very simple parameter for inferring the activation of the internal combustion engine, it is very cost effective to monitor this speed by means of the speed sensors originally provided in the drivetrain.

일 형성예에서, 소정의 클러치 모멘트가 제공된 이후부터 소정의 시간 동안 회전수가 인식되지 않을 시, 소정의 클러치 모멘트가 증가된다. 이로써, 소정의 클러치 모멘트는 내연기관을 신뢰할만하게 시동시킬 수 있는 레벨을 갖도록 보장된다.In one configuration example, when the rotation speed is not recognized for a predetermined time after the predetermined clutch moment is provided, the predetermined clutch moment is increased. Thereby, a certain clutch moment is ensured to have a level at which the internal combustion engine can be started reliably.

일 변형예에서, 구동 특정적 매개변수로서 내연기관의 회전수 구배가 모니터링되고, 경사진 회전수 구배에서, 소정의 클러치 모멘트는 감소되는 반면, 평탄한 회전수 구배에서 소정의 클러치 모멘트는 증가된다. 이러한 모니터링은 재시동 절차 중에 소정의 클러치 모멘트를 조정하기 위한 비상 기능으로 사용될 수 있다.In one variant, the rotation speed gradient of the internal combustion engine is monitored as a drive specific parameter, and at an inclined rotation speed gradient, the predetermined clutch moment is reduced, while at a flat rotation speed gradient, the predetermined clutch moment is increased. This monitoring can be used as an emergency function to adjust the desired clutch moment during the restart procedure.

일 실시 형태에서, 회전수 구배는 내연기관이 시동되지 않는 동안 평가된다. 이로써, 전기 모터에 의한 구동 시 내연기관의 재시동을 수행하기 위해 필요한 클러치 모멘트만이 모니터링되도록 보장된다. 점화된 내연기관은 스스로 추가 모멘트를 생성하므로, 이러한 추가 모멘트는 소정의 클러치 모멘트의 왜곡을 야기할 수 있을 것이다.In one embodiment, the speed gradient is evaluated while the internal combustion engine is not started. This ensures that only the clutch moment necessary to perform the restart of the internal combustion engine when driven by the electric motor is monitored. Since the ignited internal combustion engine creates an additional moment by itself, this additional moment may cause distortion of the certain clutch moment.

일 실시 형태에서, 소정의 클러치 모멘트는 비약적으로, 또는 경사구간을 거쳐 변경된다. 조정 방식에 따라, 소기의 클러치 모멘트가 조절되는 속도가 제어될 수 있다.In one embodiment, the predetermined clutch moment is changed drastically or over an inclined section. Depending on the adjustment method, the speed at which the desired clutch moment is adjusted may be controlled.

일 발전예에서, 소정의 클러치 모멘트의 변경은 이러한 클러치 모멘트의 제공 전에 이루어진다. 이로써, 하이브리드 분리 클러치의 소정의 클러치 모멘트가 구동 조건에 따라 상이하다는 것을 고려할 수 있다. 따라서, 엔진 온도, 내연기관의 수명, 정지 각도 및 그 유사체와 같은 인자들은 소정의 초기 시동 모멘트의 조절 시 고려될 수 있다. In one development example, the modification of the predetermined clutch moment is made prior to the provision of this clutch moment. Accordingly, it can be considered that the predetermined clutch moment of the hybrid separation clutch is different depending on the driving conditions. Thus, factors such as engine temperature, life of the internal combustion engine, stopping angle and their analogs can be taken into account when adjusting the predetermined initial starting moment.

유리하게는, 환경 특정적 매개변수로서 주위 온도가 사용된다. 주위 온도를 고려하면, 소정의 클러치 모멘트는 내연기관의 시동이 요구되는 낮은 온도에 따라 증가될 수 있어서, 클러치 모멘트의 추가 조정 없이 원활한 재시동이 보장된다. 내연기관이 예컨대 장시간 구동되었고, 휴지시간이 짧았다면, 소정의 초기 클러치 모멘트는 감소될 수 있다. 이 때에 소정의 클러치 모멘트의 조정은 하이브리드 분리 클러치에 소정의 클러치 모멘트가 제공되기 전에 이루어진다.Advantageously, the ambient temperature is used as an environmental specific parameter. Taking into account the ambient temperature, the predetermined clutch moment can be increased according to the low temperature required to start the internal combustion engine, so that a smooth restart is ensured without further adjustment of the clutch moment. If the internal combustion engine has been driven for a long time, for example, and the rest time is short, the predetermined initial clutch moment can be reduced. At this time, the adjustment of the predetermined clutch moment is made before the predetermined clutch moment is provided to the hybrid separation clutch.

일 형성예에서, 현재 클러치 모멘트 및 소정의 클러치 모멘트가 전기 모터를 조정하기 위한 상위 범주의 제어부에 고지된다. 이로써, 상위 범주의 제어부는 전기 모터의 제어 시 내연기관의 재시동을 위해 추가로 제공되어야 하는 모멘트를 고려할 수 있다.In one configuration, the current clutch moment and the predetermined clutch moment are notified to a higher category control unit for adjusting the electric motor. Accordingly, the control unit of the upper category can take into account the additional moment that must be provided for restarting the internal combustion engine when controlling the electric motor.

본 발명은 다양한 실시 형태들을 포괄한다. 그 중에 일 실시 형태가 도면 항목에 도시된 도면들을 참조로 더 상세히 설명될 것이다.
도면은 다음과 같다:
도 1은 하이브리드 구동부의 원리도이고,
도 2는 본 발명에 따르는 방법의 제1 실시예를 도시하며,
도 3은 본 발명에 따르는 방법의 제2 실시예를 도시한다.The present invention encompasses various embodiments. Among them, one embodiment will be described in more detail with reference to the drawings shown in the drawing item.
The drawings are as follows:
1 is a principle diagram of a hybrid drive unit,
2 shows a first embodiment of the method according to the invention,
3 shows a second embodiment of the method according to the invention.

도 1에는 하이브리드 차량의 구동계(1)의 원리도가 도시되어 있다. 이러한 구동계(1)는 내연기관(2) 및 전기 모터(3)를 포함한다. 내연기관(2)과 전기 모터(3) 사이에서 내연기관(2)의 바로 뒤에 하이브리드 분리 클러치(4)가 배치된다. 내연기관(2)과 하이브리드 분리 클러치(4)는 크랭크 축(5)을 통해 서로 연결된다. 전기 모터(3)는 회전 가능한 회전자(6) 및 고정식 고정자(7)를 포함한다. 하이브리드 분리 클러치(4)의 종동축(8)은 변속기(9)와 연결되고, 변속기는 상세히 도시되지 않은 클러치 요소, 예컨대 전기 모터(3)와 변속기(9) 사이에 배치되는 제2 클러치 또는 토크 변환기를 포함한다. 변속기(9)는 내연기관(2) 및/또는 전기 모터(3)로부터 생성되는 토크를 하이브리드 차량의 구동 휠들(10)에 전달한다. 이 때에 전기 모터(3) 및 변속기(9)는 변속기 시스템(11)을 형성하고, 이러한 변속기 시스템은 유체 정역학적 클러치 액추에이터(12)에 의해 제어된다.Fig. 1 shows a principle diagram of a drive system 1 of a hybrid vehicle. This drive system 1 includes an internal combustion engine 2 and an electric motor 3. Between the internal combustion engine 2 and the electric motor 3, a hybrid separation clutch 4 is arranged immediately after the internal combustion engine 2. The internal combustion engine 2 and the hybrid separation clutch 4 are connected to each other via a crankshaft 5. The electric motor 3 comprises a rotatable rotor 6 and a stationary stator 7. The driven shaft 8 of the hybrid separating clutch 4 is connected with the transmission 9, the transmission is a clutch element not shown in detail, for example a second clutch or torque arranged between the electric motor 3 and the transmission 9 Includes a converter. The transmission 9 transmits the torque generated from the internal combustion engine 2 and/or the electric motor 3 to the driving wheels 10 of the hybrid vehicle. At this time, the electric motor 3 and the transmission 9 form a transmission system 11, which is controlled by a hydrostatic clutch actuator 12.

내연기관(2)과 전기 모터(3) 사이에 배치되는 하이브리드 분리 클러치(4)는, 하이브리드 차량의 주행 중에 전기 모터(3)에 의해 생성되는 토크로 내연기관(2)을 시동시키거나 부스트 모드 중에 구동된 내연기관(2) 및 전기 모터(3)를 이용하여 주행하기 위해, 닫힌다. 이 때에 하이브리드 분리 클러치(4)는 유체 정역학적 클러치 액추에이터(12)에 의해 작동된다.The hybrid separation clutch 4 disposed between the internal combustion engine 2 and the electric motor 3 starts the internal combustion engine 2 with a torque generated by the electric motor 3 during the driving of the hybrid vehicle or is in a boost mode. In order to travel using the internal combustion engine 2 and the electric motor 3 driven in the middle, it is closed. At this time the hybrid separation clutch 4 is actuated by the hydrostatic clutch actuator 12.

전기 모터(3)에 의해 내연기관(2)이 재시동되는 경우, 하이브리드 분리 클러치(4)에는 소정의 초기 클러치 모멘트(TTarget)가 제공된다. 그러한 초기 클러치 모멘트(TTarget)는 구동 조건적이므로, 예컨대 엔진 온도, 내연기관의 수명 및 정지 각도 종속성과 같은 인자들이 고려되어, 소정의 초기 클러치 모멘트(TTarget)는 하이브리드 분리 클러치(4)에 클러치 모멘트(TTarget)가 제공되기 전에 조절된다. 또한, 소정의 초기 클러치 모멘트(TTarget)는 주위 온도에 따라 변경될 수 있다. 외부 온도가 낮을 시, 소정의 초기 클러치 모멘트(TTarget)가 증가됨으로써, 내연기관(2)의 재시동은 클러치 모멘트(TTarget)의 추가 조정 없이 가급적 보장된다. 내연기관(2)이 장시간 구동되었고, 휴지시간이 짧았다면, 이로부터, 온도 종속적인 초기 클러치 모멘트(TTarget)가 크게 변경되지 않았음을 전제할 수 있고 이러한 초기 클러치 모멘트는 감소될 수 있다. 소정의 클러치 모멘트(TTarget)에 부가되는 이러한 인자들은 클러치 액추에이터의 제어 기계의 테이블에 캘리브레이션으로 저장된다. 테이블에 저장되지 않는 값들 간에는 선형 보간이 이루어진다.When the internal combustion engine 2 is restarted by the electric motor 3, the hybrid separation clutch 4 is provided with a predetermined initial clutch moment T Target . Since such an initial clutch moment (T Target ) is a driving conditional, factors such as engine temperature, life of the internal combustion engine, and stop angle dependence are considered, and a predetermined initial clutch moment (T Target ) is clutched to the hybrid separation clutch 4 It is adjusted before the moment (T Target ) is provided. In addition, a predetermined initial clutch moment T Target may be changed according to the ambient temperature. When the external temperature is low, a predetermined initial clutch moment T Target is increased, so that the restart of the internal combustion engine 2 is guaranteed as much as possible without additional adjustment of the clutch moment T Target . If the internal combustion engine 2 has been driven for a long time and the rest time is short, from this, it can be assumed that the temperature-dependent initial clutch moment T Target has not changed significantly, and this initial clutch moment can be reduced. These factors, which are added to the predetermined clutch moment (T Target ), are stored as calibrations in the table of the control machine of the clutch actuator. Linear interpolation is performed between values that are not stored in the table.

이렇게 조절된 소정의 초기 클러치 모멘트(TTarget)가 내연기관(2)의 재시동을 위해 하이브리드 분리 클러치(4)에 제공되면, 이 시점부터 내연기관(2)의 회전수(n)가 모니터링된다. 소정의 초기 클러치 모멘트(TTarget)가 제공된 이후부터 소정의 시간 동안 내연기관(2)의 회전수(n)가 인식되지 않을 시, 소정의 클러치 모멘트(TTarget)는 추가 제어되고 증가된다(도 2a, 도 2b 참조). 클러치 모멘트(TTarget)의 이러한 증가는 비약적으로, 또는 경사구간을 포함하여 이루어질 수 있다. 예컨대 소정의 시간과 같은 동일한 조건 하에 또는 클러치 액추에이터(12)의 소정의 액추에이터 기준 위치(L)의 도달 후에 여전히 회전수(n)가 인식되지 않을 시, 소정의 클러치 모멘트(TTarget)는 추가로 증가될 수 있다.When the thus-adjusted predetermined initial clutch moment T Target is provided to the hybrid separation clutch 4 for restarting the internal combustion engine 2, the rotational speed n of the internal combustion engine 2 is monitored from this point on. When the rotation speed n of the internal combustion engine 2 is not recognized for a predetermined time after the predetermined initial clutch moment T Target is provided, the predetermined clutch moment T Target is additionally controlled and increased (Fig. 2a, see Fig. 2b). This increase in the clutch moment (T Target ) can be achieved dramatically or including an inclined section. For example, under the same conditions such as a predetermined time or when the rotational speed n is still not recognized after reaching the predetermined actuator reference position L of the clutch actuator 12, the predetermined clutch moment T Target is additionally Can be increased.

또한, 내연기관(2)의 재시동은 회전수 구배(dn/dt)를 참조로 관찰될 수 있다. 내연기관(2)이 매우 빠르게 시동하는 것이 인식되면, 클러치 모멘트(TTarget)가 감소될 수 있다. 내연기관(2)이 너무 느리게 시동하면, 클러치 모멘트(TTarget)가 증가될 수 있다. 그러나 내연기관(2)의 회전수 구배(dn/dt)는 내연기관(2)이 점화되지 않는 동안에만 평가되어야 한다.Further, the restart of the internal combustion engine 2 can be observed with reference to the rotation speed gradient (dn/dt). If it is recognized that the internal combustion engine 2 starts very quickly, the clutch moment T Target can be reduced. If the internal combustion engine 2 starts too slowly, the clutch moment T Target may increase. However, the rotational speed gradient (dn/dt) of the internal combustion engine 2 should be evaluated only while the internal combustion engine 2 is not ignited.

클러치 모멘트(TTarget)의 초기 예측이 충분하지 않을 시, 클러치 제어부는 재시동 시 클러치 모멘트(TTarget)를 변조함으로써 대응할 수 있다. 즉, 내연기관(2)의 점화가 인식되지 않을 시, 소정의 클러치 모멘트(TTarget)는 소정의 값만큼 추가 제어된다. 이는 예컨대 클러치 액추에이터(12)의 액추에이터 위치(L)를 값(x)만큼 변경시킴으로써 이루어질 수 있는데, 이는 도 3에 도시된 바와 같다.When the initial prediction of the clutch moment T Target is not sufficient, the clutch control unit can respond by modulating the clutch moment T Target when restarting. That is, when the ignition of the internal combustion engine 2 is not recognized, the predetermined clutch moment T Target is additionally controlled by a predetermined value. This can be accomplished, for example, by changing the actuator position L of the clutch actuator 12 by a value x, as shown in FIG. 3.

이러한 방법에서는, 상위 계층의 하이브리드 제어부에 항상 현재의 클러치 모멘트(Tact) 및 기준 클러치 모멘트(TTarget)가 고지됨으로써, 상위 계층의 하이브리드 제어부가 전기 모터(3)를 보다 양호하게 조정할 수 있고, 하이브리드 분리 클러치(4)의 소정의 클러치 모멘트(TTarget)의 변경에 의해 재시동 시 슬립 감소가 야기되지 않는다는 것이 특히 중요하다. In this method, since the current clutch moment (T act ) and the reference clutch moment (T Target ) are always notified to the hybrid control unit of the upper tier, the hybrid control unit of the upper tier can better adjust the electric motor 3, It is particularly important that no slip reduction is caused when restarting by a change of the predetermined clutch moment T Target of the hybrid separation clutch 4.

1 구동계
2 내연기관
3 전기 모터
4 하이브리드 분리 클러치
5 크랭크 축
6 회전자
7 고정자
8 종동축
9 변속기
10 구동 휠들
11 변속기 시스템
12 클러치 액추에이터1 drivetrain
2 internal combustion engine
3 electric motor
4 hybrid separation clutch
5 crankshaft
6 rotor
7 stator
8 driven shaft
9 transmission
10 drive wheels
11 transmission system
12 clutch actuator

Claims (10)

하이브리드 구동계에서 내연기관의 재시동 방법으로, 하이브리드 분리 클러치(4)는 내연기관(2)과 전기 모터(3)를 분리하거나 연결하고, 하이브리드 분리 클러치(4)가 닫혀 있고 오로지 전기에 의해서만 주행 시, 상기 내연기관(2)은 상기 하이브리드 분리 클러치(4)의 소정의 클러치 모멘트(TTarget)를 이용하여 상기 전기 모터(3)에 의해 재시동되는 것인, 방법에 있어서, 상기 하이브리드 분리 클러치(4)의 상기 소정의 클러치 모멘트(TTarget)는 상기 내연기관(2)의 재시동 시 적어도 하나의 구동 특정적 및/또는 환경 특정적인 매개변수에 따라 변경되는 것을 특징으로 하는 방법.As a method of restarting the internal combustion engine in the hybrid drive system, the hybrid separation clutch 4 separates or connects the internal combustion engine 2 and the electric motor 3, and when the hybrid separation clutch 4 is closed and driven solely by electricity, The internal combustion engine (2) is restarted by the electric motor (3) using a predetermined clutch moment (T Target ) of the hybrid separation clutch (4), wherein the hybrid separation clutch (4) Wherein the predetermined clutch moment (T Target ) of is changed according to at least one drive-specific and/or environment-specific parameter when the internal combustion engine (2) is restarted. 제1항에 있어서, 상기 소정의 클러치 모멘트(TTarget)의 변경은 상기 클러치 모멘트(TTarget)의 제공 후에 이루어지는 것을 특징으로 하는 방법. The method of claim 1, wherein the predetermined clutch moment (T Target ) is changed after the clutch moment (T Target ) is provided. 제2항에 있어서, 상기 소정의 클러치 모멘트(TTarget)가 제공된 이후부터 상기 하이브리드 구동계(1)의 구동 특정적인 매개변수로서 상기 내연기관(2)의 회전수(n)가 모니터링되는 것을 특징으로 하는 방법. The method according to claim 2, characterized in that the rotational speed (n) of the internal combustion engine (2) is monitored as a drive specific parameter of the hybrid drive system (1) after the predetermined clutch moment (T Target ) is provided. How to. 제3항에 있어서, 상기 소정의 클러치 모멘트(TTarget)가 제공된 이후부터 소정의 시간 동안 상기 회전수(n)가 인식되지 않을 시, 상기 소정의 클러치 모멘트(TTarget)가 증가되는 것을 특징으로 하는 방법. The method of claim 3, wherein when the rotational speed (n) is not recognized for a predetermined time after the predetermined clutch moment (T Target ) is provided, the predetermined clutch moment (T Target ) is increased. How to. 제2항에 있어서, 상기 구동계(1)의 구동 특정적 매개변수로서 상기 내연기관(2)의 회전수 구배가 모니터링되고, 경사진 회전수 구배일 때 상기 소정의 클러치 모멘트(TTarget)가 감소되는 반면, 평탄한 회전수 구배일 때 상기 소정의 클러치 모멘트(TTarget)가 증가되는 것을 특징으로 하는 방법. According to claim 2, The rotation speed gradient of the internal combustion engine (2) is monitored as a driving specific parameter of the drive system (1), and the predetermined clutch moment (T Target ) decreases when the rotation speed is inclined. On the other hand, the method characterized in that the predetermined clutch moment (T Target ) increases when the rotational speed is flat. 제5항에 있어서, 상기 회전수 구배는 상기 내연기관(2)이 점화되지 않는 동안 평가되는 것을 특징으로 하는 방법. 6. Method according to claim 5, characterized in that the rotational speed gradient is evaluated while the internal combustion engine (2) is not ignited. 제1항 내지 제6항 중 적어도 어느 한 항에 있어서, 상기 소정의 클러치 모멘트(TTarget)는 비약적으로, 또는 경사구간을 거쳐 변경되는 것을 특징으로 하는 방법. The method according to any one of claims 1 to 6, wherein the predetermined clutch moment (T Target ) is changed dramatically or through an inclined section. 제1항 내지 제7항 중 적어도 어느 한 항에 있어서, 상기 소정의 클러치 모멘트(TTarget)의 변경은 상기 클러치 모멘트(TTarget)의 제공 전에 이루어지는 것을 특징으로 하는 방법. 8. The method according to any one of claims 1 to 7, wherein the predetermined clutch moment (T Target ) is changed before the clutch moment (T Target ) is provided. 제1항 내지 제8항 중 적어도 어느 한 항에 있어서, 환경 특정적인 매개변수로서 주위 온도가 사용되는 것을 특징으로 하는 방법. 9. A method according to at least one of the preceding claims, characterized in that the ambient temperature is used as an environmental specific parameter. 제1항 내지 제9항 중 적어도 어느 한 항에 있어서, 현재 클러치 모멘트(Tact) 및 상기 소정의 클러치 모멘트(TTarget)는 상기 전기 모터(3)를 조정하기 위한 상위 범주의 제어부에 고지되는 것을 특징으로 하는 방법. 10. The method according to at least one of claims 1 to 9, wherein the current clutch moment (T act ) and the predetermined clutch moment (T Target ) are notified to a higher category control unit for adjusting the electric motor (3). The method characterized in that.
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