KR20190108112A - Method for controlling coasting run of vehicle with auto clutch - Google Patents

Method for controlling coasting run of vehicle with auto clutch Download PDF

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KR20190108112A
KR20190108112A KR1020197020663A KR20197020663A KR20190108112A KR 20190108112 A KR20190108112 A KR 20190108112A KR 1020197020663 A KR1020197020663 A KR 1020197020663A KR 20197020663 A KR20197020663 A KR 20197020663A KR 20190108112 A KR20190108112 A KR 20190108112A
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vehicle
coasting
run
acceleration
coasting run
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KR102523848B1 (en
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민 안 레
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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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18072—Coasting
    • 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
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • B60W40/06—Road conditions
    • B60W40/072—Curvature of the road
    • 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
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • B60W40/06—Road conditions
    • B60W40/076—Slope angle of the road
    • 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
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
    • B60W40/09—Driving style or behaviour
    • 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
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
    • B60W40/107—Longitudinal acceleration
    • 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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18072—Coasting
    • B60W2030/1809—Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
    • 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
    • B60W2510/0647—Coasting condition
    • 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
    • B60W2510/18—Braking system
    • B60W2510/182—Brake pressure, e.g. of fluid or between pad and disc
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B60W2520/105—Longitudinal acceleration
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/28—Wheel 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/30—Driving style
    • 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
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/15—Road slope, i.e. the inclination of a road segment in the longitudinal direction
    • 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
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/30—Road curve radius
    • 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
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0644—Engine speed
    • B60W2710/0655—Coasting condition
    • 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
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/28—Wheel speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/18—Propelling the vehicle
    • B60Y2300/18008—Propelling the vehicle related to particular drive situations
    • B60Y2300/18066—Coasting
    • 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

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Abstract

본 발명은, 코스팅 주행을 개시하기 위하여 기어가 맞물린 상태에서 파워 트레인으로부터 연소 기관을 분리하기 위해 클러치가 개방되고, 코스팅 주행을 종료하기 위하여 클러치가 체결되는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법에 관한 것이다. 코스팅 주행이 자동으로 조정되는 방법에서는, 코스팅 주행의 개시 또는 종료가 운전자 행동에 따라 자동으로 결정된다.The present invention relates to a coasting of a vehicle with an automatic clutch, in which a clutch is opened to disconnect the combustion engine from the power train with the gear engaged to initiate a coasting run, and the clutch is engaged to end the coasting run. A method for controlling driving is provided. In a method in which the coasting run is automatically adjusted, the start or end of the coasting run is automatically determined according to the driver's action.

Description

자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법Method for controlling coasting run of vehicle with auto clutch

본 발명은, 코스팅 주행을 개시하기 위하여 기어가 맞물린 상태에서 파워 트레인으로부터 연소 기관을 분리하기 위해 클러치가 개방되고, 코스팅 주행을 종료하기 위하여 클러치가 체결되는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법에 관한 것이다.The present invention relates to a coasting of a vehicle with an automatic clutch, in which a clutch is opened to disconnect the combustion engine from the power train with the gear engaged to initiate a coasting run, and the clutch is engaged to end the coasting run. A method for controlling driving is provided.

차량이 코스팅 주행으로 변위되는, 자동 클러치 장치를 갖는 자동차를 위한 제어 방법이 공지되어 있다. 코스팅이란, 연료 공급 할당 부재로서의 가속 페달이 작동되지 않는 차량의 오버런 단계로 의도적으로 결합 해제되는 것으로 이해될 수 있다. 이 경우에는 차량은 굴러가되, 차량을 구동시키는 엔진은 스위치 오프되어 있거나 공회전 속도로 작동된다. 코스팅 모드에서는, 기어가 맞물린 상태에서 클러치가 전자식 제어 유닛에 의해 개방됨으로써, 결과적으로 차량은 굴러가되, 이 경우에는 엔진의 제동 효과로 인해 운동 에너지가 상실되지 않는다.BACKGROUND OF THE INVENTION A control method for a motor vehicle with an automatic clutch device, in which the vehicle is displaced by coasting travel, is known. It can be understood that coasting is intentionally decoupled with the overrun phase of the vehicle in which the accelerator pedal as the fuel supply assignment member is not operated. In this case, the vehicle rolls, but the engine driving the vehicle is switched off or operated at idle speed. In the coasting mode, the clutch is opened by the electronic control unit with the gears engaged, resulting in the vehicle rolling, in which case no kinetic energy is lost due to the braking effect of the engine.

DE 10 2013 219 345 A1호에는, 운전자 보조 시스템, 코스팅 장치 및 회생 장치를 갖는 자동차의 구동 유닛을 제어하기 위한 방법이 공지되어 있다. 이 경우에는, 운전자 보조 시스템에 의해 검출되고 차량 주변 환경을 특징짓는 변수에 따라서, 그리고 자동차 전력 공급 시스템의 작동 상태에 따라서, 하기의 주행 상태들의 순서 및/또는 주행 상태의 시간에 걸친 비율이 확정된다: 코스팅 - 회생 - 제동 - 코스팅 스위치 오프. 이 경우의 단점은, 복수의 코스팅 과정들이 다만 매우 짧은 기간 동안 연속적으로 실행된다는 것이다. 그러나 이는 운전자에 의해 불쾌한 것으로서 감지된다.In DE 10 2013 219 345 A1 a method is known for controlling a drive unit of a motor vehicle having a driver assistance system, a coasting device and a regenerative device. In this case, according to the variables detected by the driver assistance system and characterizing the environment around the vehicle and according to the operating state of the vehicle power supply system, the following sequence of driving states and / or the ratio of the driving state over time is determined. Becomes: Coasting-Regenerative-Braking-Coasting Switch Off. The disadvantage of this case is that a plurality of coasting procedures are executed continuously for only a very short period of time. However, this is perceived as offensive by the driver.

따라서, 본 발명의 과제는, 코스팅 과정들에 의해서 승차감이 전혀 손상되지 않는, 차량의 코스팅 주행을 제어하기 위한 방법을 제공하는 데 있다.Accordingly, an object of the present invention is to provide a method for controlling a coasting run of a vehicle in which riding comfort is not impaired at all by coasting processes.

상기 과제는, 본 발명에 따라, 코스팅 주행의 개시 및/또는 종료가 운전자 행동에 따라 자동으로 결정됨으로써 해결된다. 이와 같은 해결책이 갖는 장점은, 현재의 주행 상황에 맞추어 조정됨으로 인해 운전자 요구가 고려되고, 이로써 코스팅 주행에 의해서 승차감이 부정적인 영향을 전혀 받지 않는다는 것이다.According to the present invention, the problem is solved by automatically determining the start and / or end of the coasting run in accordance with the driver's behavior. The advantage of this solution is that the driver's needs are taken into account because it is adapted to the current driving situation, so that riding comfort is not adversely affected by the coasting driving.

바람직한 방식으로, 코스팅 주행의 종료는 사전 설정된 제동 동작에 따라서 이루어진다. 다만 특정의 제동 동작들만이 코스팅 주행의 종료를 유도하기 때문에, 코스팅 주행의 기간은 최대로 되며, 이와 같은 상황은 차량 연료 소비의 최소화를 유도한다. 따라서, 차량은 더 긴 시간 동안 굴러갈 수 있는데, 그 이유는 속도가 파워 트레인에 의해서 감속되지 않기 때문이다.In a preferred manner, the end of the coasting run is made in accordance with a preset braking operation. However, since only certain braking operations lead to the end of the coasting run, the duration of the coasting run is maximized, and this situation leads to the minimization of the vehicle fuel consumption. Thus, the vehicle can roll for longer periods of time because the speed is not decelerated by the power train.

일 실시예에서는, 사전 설정된 제동 동작이 비상 제동으로서 이루어진다. 이로 인해, 차량의 코스팅 주행은 다만 위험 상황에서만 중단된다.In one embodiment, the preset braking operation is made as emergency braking. As a result, the coasting run of the vehicle is stopped only in dangerous situations.

일 대안예에서는, 브레이크 실린더 압력이 사전 설정된 압력 임계값에 미달되는 경우에, 사전 설정된 제동 동작이 이루어진다. 압력 임계값의 미달은, 차량 내에서 발생 가능한 위험 상황을 의미한다. 연소 기관이 스위치 오프된 상태에서의 반복적인 제동 동작은, 브레이크 실린더 압력이 점점 더 낮아지는 상황을 야기할 수 있다. 그렇기 때문에, 이 경우에는, 차량이 추가로 파워 트레인에 의해서 감속되거나 브레이크 실린더 압력이 충전될 수 있도록 하기 위하여, 코스팅 종료가 즉시 실현된다.In one alternative, the preset braking operation is made when the brake cylinder pressure is below the preset pressure threshold. Failure of the pressure threshold means a potentially dangerous situation within the vehicle. Repeated braking operation with the combustion engine switched off can cause a situation where the brake cylinder pressure becomes lower and lower. Thus, in this case, coasting termination is immediately realized in order for the vehicle to be further decelerated by the power train or the brake cylinder pressure can be filled.

바람직한 방식으로는, 연소 기관이 스위치 오프된 상태에서 모든 제동 동작들의 총 기간이 사전 설정된 기간을 초과하는 경우에, 사전 설정된 제동 동작이 이루어진다.In a preferred manner, the preset braking operation is made when the total duration of all the braking operations exceeds the preset period with the combustion engine switched off.

일 실시예에서는, 차량의 현재 주행 상황이 주행 조작에 의해서 결정되며, 이 경우에는 차량이 곡선을 주행하고 이 곡선의 현재 곡률이 특정의 곡률 임계값을 초과할 때에 코스팅 주행의 개시가 저지된다. 따라서, 코스팅 주행은 좁고 그리고/또는 가파른 곡선에서는 허용되지 않는다.In one embodiment, the current driving situation of the vehicle is determined by the driving operation, in which case the onset of coasting driving is inhibited when the vehicle runs on the curve and the current curvature of the curve exceeds a certain curvature threshold. . Thus, coasting runs are not allowed on narrow and / or steep curves.

일 변형예에서는, 차량의 현재 주행 상황이 차량 가속도에 의해서 결정되며, 이 경우 현재의 차량 가속도가 제1 가속도 임계값에 미달될 때에는 코스팅 주행의 개시가 이루어지는 한편, 현재의 차량 가속도가 제2 가속도 임계값을 초과할 때에는 코스팅 주행의 종료가 이루어진다. 따라서, 코스팅 주행은, 승차감 또는 주행 안전을 연속적으로 보장하기 위하여, 다만 차량 가속도가 최적인 경우에 그리고 주행 조작이 적합한 경우에만 실행된다.In one variant, the current driving situation of the vehicle is determined by the vehicle acceleration, in which case coasting travel is initiated when the current vehicle acceleration is less than the first acceleration threshold, while the current vehicle acceleration is the second. When the acceleration threshold is exceeded, the coasting run is terminated. Therefore, the coasting run is executed only when the vehicle acceleration is optimal and when the driving operation is suitable in order to continuously guarantee the riding comfort or the driving safety.

일 실시예에서는, 차량의 현재 차량 가속도가 하나 이상의 휠 회전 속도로부터 결정되며, 이 경우에는 휠 회전 속도로부터 결정된 차량 가속도에 따라 차량의 오르막 주행 및/또는 내리막 주행에서 코스팅 주행이 저지된다. 음의 차량 가속도가 지나치게 높은 경우에는, 특히 연소 기관의 스위치 오프에 의한 코스팅 주행의 개시가 비효율적이고 바람직하지 않은데, 그 이유는 정상 주행 동작으로 가기 위해서는 차량이 신속하게 재차 가속되어야만 하기 때문이다. 그와 반대로, 양의 차량 가속도가 지나치게 높은 경우에는, 위험 상황을 방지하기 위하여 코스팅 주행이 저지된다. 따라서, 가파르게 하강하는 도로에서 또는 가파르게 상승하는 도로에서는 코스팅 주행이 설정될 수 없도록 보장된다. 휠 회전 속도를 이용해서 차량 가속도를 검출함으로써는, 별도의 가속도 센서가 생략될 수 있으며, 이와 같은 상황은 방법의 실시를 단순하게 하고, 비용을 줄여준다.In one embodiment, the current vehicle acceleration of the vehicle is determined from one or more wheel rotational speeds, in which case coasting travel is inhibited in uphill and / or downhill driving of the vehicle in accordance with the vehicle acceleration determined from the wheel rotational speed. In the case where the negative vehicle acceleration is too high, the initiation of coasting travel, in particular by switching off of the combustion engine, is inefficient and undesirable, since the vehicle must be accelerated again quickly in order to go to normal driving operation. On the contrary, if the positive vehicle acceleration is too high, coasting driving is prevented in order to prevent a dangerous situation. Thus, it is guaranteed that coasting travel cannot be set on steeply descending roads or on steeply rising roads. By detecting vehicle acceleration using the wheel rotation speed, a separate acceleration sensor can be omitted, which simplifies the implementation of the method and reduces costs.

일 실시예에서는, 운전자 행동이 온라인으로 결정된다. 운전자 행동을 관찰함으로써, 코스팅은 다만 교통 상황이 적합한 경우에만 허용된다. 이와 같은 온라인 평가에 의해서는, 운전자 반응이 코스팅 프로파일 내에서의 주행 상황 또는 교통 상황에 적응된다. 이 경우에는, 특히 운전자가 언제 그리고 얼마나 자주 코스팅 주행을 벗어났는지가 고려된다. 본 실시예에서는, 운전자 프로파일의 저장이 생략될 수 있다.In one embodiment, driver behavior is determined online. By observing driver behavior, coasting is only allowed if traffic conditions are appropriate. By such an online assessment, the driver's response is adapted to driving conditions or traffic conditions within the coasting profile. In this case, it is especially taken into account when and how often the driver has missed the coasting run. In this embodiment, the storing of the driver profile can be omitted.

특히 간단한 일 실시예에서는, 과거 기간의 운전자 행동이 평가된다.In one particularly simple embodiment, driver behavior over past periods is evaluated.

코스팅 주행의 가급적 신속한 적응을 실현하기 위하여, 운전자 행동이 개인화된 운전자 프로파일과 조합된다. 이 경우, 어느 운전자가 주행 동작을 개시했는지와 같은 저장된 운전자 프로파일이 차량에 통지되면, 코스팅 동작은 바람직하게 상이한 차량 운전자에 맞추어 조정될 수 있다.In order to realize the fastest adaptation of the coasting run, driver behavior is combined with a personalized driver profile. In this case, if the vehicle is informed of the stored driver profile, such as which driver has initiated the driving operation, the coasting operation can preferably be adjusted for different vehicle drivers.

본 발명은 다수의 실시예를 허용한다. 이들 실시예 중 몇몇이 도면부에 도시된 도면들을 참조하여 더욱 상세하게 설명될 것이다.The present invention allows a number of embodiments. Some of these embodiments will be described in more detail with reference to the drawings shown in the drawings.

도 1은 제동 작동 과정 중에 코스팅 과정을 종료하기 위한 일 실시예를 도시하고,
도 2는 가속도가 사전 설정된 경우에 코스팅 과정에 대한 일 실시예를 도시하며,
도 3은 교통 상황이 적합한 경우에 코스팅 과정을 위한 일 실시예를 도시한다.1 shows an embodiment for terminating a coasting process during a braking operation,
2 shows an embodiment of a coasting process when acceleration is preset;
3 illustrates one embodiment for a coasting process when traffic conditions are appropriate.

오늘날의 차량에서, 기어가 맞물린 경우에는, 특히 차량 주행 동안에 클러치의 자동 개방이 실행되며, 이와 같은 상황은 코스팅으로서 지칭된다. 이 경우에는, 코스팅 단계에서 연소 기관이 스위치 오프되는 추가 옵션이 존재한다. 코스팅의 목적은, 손실 토크로서의 파워 트레인의 드래그 토크를 피하기 위하여, 연소 기관을 파워 트레인으로부터 결합 해제하는 것이며, 이와 같은 상황은 연료 절약을 유도한다.In today's vehicles, when the gear is engaged, automatic opening of the clutch is carried out, especially during vehicle travel, such a situation is referred to as coasting. In this case, there is an additional option in which the combustion engine is switched off in the coasting phase. The purpose of coasting is to disengage the combustion engine from the power train in order to avoid drag torque of the power train as a loss torque, which leads to fuel savings.

각각의 도면에는, 코스팅 과정의 자동 개시 또는 코스팅 과정의 자동 종료를 최적화하기 위한 다양한 실시예들이 도시되어 있으며, 이 경우 코스팅 과정은 차량 주행 동작 동안 매우 효율적으로 형성되어 있다.In each figure, various embodiments are shown for optimizing the automatic initiation of the coasting process or the automatic termination of the coasting process, in which case the coasting process is very efficiently formed during the vehicle driving operation.

도 1에는, 제동 중에 코스팅 과정을 종료하기 위한 일 실시예가 도시되어 있다. 이 경우, 도 1a는, 시간(t)에 걸친 차량 속도(v)를 보여준다. 이 경우, 곡선 A는 코스팅 과정 동안의 가벼운 제동 과정을 보여주는 한편, 곡선 B는 파워 트레인이 체결된 경우의 제동 과정을 나타낸다. 본 경우에, 코스팅 과정은 예를 들어 비상 제동 상황에서 또는 낮은 브레이크 실린더 압력이 존재하는 경우에는 다만 사전 설정된 제동 동작에 의해서만 중단되는데, 그 이유는 파워 트레인이 체결된 경우에는, 코스팅 과정 동안의 가벼운 제동의 경우보다 차량 속도가 더 강하게 감소되기 때문이다. 이와 같은 코스팅 과정 동안의 가벼운 제동에 의해서는, 코스팅 과정의 기간이 최대로 되며, 이로 인해 동시에 연료 소비는 최소로 된다. 곡선 A에 명확하게 도시된, 차량 속도(v)의 다만 약간의 감소에 의해서는, 더 긴 구간을 위해 굴러가는 것이 차량에 허용된다.1 shows an embodiment for terminating a coasting process during braking. In this case, FIG. 1A shows the vehicle speed v over time t. In this case, curve A shows the light braking process during the coasting process, while curve B shows the braking process when the power train is engaged. In the present case, the coasting process is interrupted only by a preset braking action, for example in an emergency braking situation or when a low brake cylinder pressure is present, because during the coasting process if the power train is engaged This is because the vehicle speed is reduced more strongly than in the case of light braking. By light braking during this coasting process, the duration of the coasting process is maximized, thereby simultaneously minimizing fuel consumption. By just a slight decrease in the vehicle speed v, clearly shown in curve A, it is allowed for the vehicle to roll for longer sections.

도 1b에는, 연료 소비(KV)가 시간(t)에 걸쳐 도시되어 있으며, 이 경우 곡선 C는 연소 기관의 공회전에서의 연료 소비를 보여주는 한편, 연소 기관이 스위치 오프된 경우에는 연료 소비가 전혀 일어나지 않으며, 이와 같은 상황은 예를 들어 코스팅 동안에 일어난다. 코스팅의 스위치 오프가 없는 차량을 이용하는 것에 비해, 제동 과정 동안 코스팅 주행이 활성화된 경우에는 연료 소비가 전혀 이루어지지 않는다.In FIG. 1B, fuel consumption KV is shown over time t, in which case curve C shows the fuel consumption at idle of the combustion engine, while no fuel consumption occurs when the combustion engine is switched off. This situation occurs, for example, during coasting. Compared to using a vehicle without the switching off of the coasting, no fuel consumption is achieved when the coasting run is activated during the braking process.

도 2에는, 다만 차량의 가속도가 최적인 경우에만 코스팅 과정이 이루어지는, 본 발명에 따른 방법의 일 실시예가 도시되어 있다. 본 도면에서는, 높이 프로파일(HP)이 거리(s)에 걸쳐 도시되어 있다. 이 경우, D로 표시된 직사각형은, 코스팅이 원칙적으로 금지되는 구역을 지시한다. 이와 같은 구역은, 도로의 가파른 상승부가 연결되는 가파른 내리막 길이다. 이와 같은 영역들에서 코스팅을 방지하기 위하여, 코스팅은 다만 최적의 차량 가속도에 따라서만 시작되거나 종료된다. 다시 말하자면, 다만 높이 프로파일의 약간의 변화가 존재하는 도로의 영역들에서만 코스팅이 허용된다. 이 목적을 위해, 높이 프로파일(HP)은 차량 가속도에 따라서 결정된다. 차량 가속도가 제1 가속도 임계값을 초과하면, 차량이 가파르게 내려가는 도로 섹션에 있고, 이로써 차량의 허용되지 않는 가속도가 발생한다고 가정된다. 그렇기 때문에, 코스팅은, 다만 사전 설정된 제1 가속도 임계값이 미달되는 경우에만 허용된다. 차량이 가파른 오르막 주행 중에 있으면, 다만 제2 가속도 임계값을 초과하는 가속도를 갖는 섹션에 차량이 있는 경우에만 코스팅이 허용된다. 제2 가속도 임계값이 미달되는 영역들에서는, 설정된 코스팅 프로파일로 인해 차량이 상승 중에 느려지고, 이로써 자체 힘으로는 언덕에 도달하지 못한다고 가정된다. 이 경우, 가속도 값들은 특히 차량의 휠 회전 속도를 통해서 결정된다. 이와 같은 구성으로 인해, 코스팅 과정의 개시 또는 종료는 운전자 필요를 참조해서 조정된다.In Fig. 2 an embodiment of the method according to the invention is shown, in which the coasting process only takes place when the acceleration of the vehicle is optimal. In this figure, the height profile HP is shown over the distance s. In this case, the rectangle marked D indicates the area where coasting is prohibited in principle. Such a zone is a steep downhill path that leads to a steep rise of the road. In order to prevent coasting in these areas, the coasting starts or ends only in accordance with the optimum vehicle acceleration. In other words, coasting is allowed only in areas of the road where there is a slight change in height profile. For this purpose, the height profile HP is determined according to the vehicle acceleration. If the vehicle acceleration exceeds the first acceleration threshold, it is assumed that the vehicle is in a steeply descending road section, whereby an unacceptable acceleration of the vehicle occurs. As such, coasting is only allowed if the preset first acceleration threshold is not met. If the vehicle is on a steep uphill run, coasting is allowed only if the vehicle is in a section with an acceleration exceeding a second acceleration threshold. In areas where the second acceleration threshold is below, it is assumed that the set coasting profile causes the vehicle to slow down during the ascent, thereby not reaching the hill with its own forces. In this case, the acceleration values are determined in particular through the wheel rotation speed of the vehicle. Due to this configuration, the start or end of the coasting process is adjusted with reference to the driver's needs.

도 3은, 다만 적합한 교통 상황에서만 코스팅이 허용되는, 본 발명에 따른 방법의 또 다른 일 실시예를 보여준다. 적합한 교통 상황을 검출하기 위하여, 주행 상황이 운전자 행동에 의해서 온라인으로 식별되고 평가되며, 이 경우에는 평가된 운전자 행동으로부터 코스팅 프로파일이 교통 상황에 맞추어 조정된다. 운전자 행동을 온라인으로 식별하는 경우에는, 다른 무엇보다 운전자가 코스팅 과정을 얼마나 자주 벗어났는지가 확인된다. 도 3a에서는, 차량 속도(v)가 시간(t)에 걸쳐 도시되어 있다. 본 도면에서는 균일한 차량 속도(v)가 존재하기 때문에, 코스팅 전략이 운전자 행동에 간단히 적응될 수 있다.3 shows yet another embodiment of the method according to the invention in which coasting is only permitted in suitable traffic situations. In order to detect a suitable traffic situation, the driving situation is identified and evaluated online by driver behavior, in which case the coasting profile is adjusted to the traffic situation from the evaluated driver behavior. When identifying driver behavior online, it is identified, among other things, how often the driver missed the coasting process. In FIG. 3A, the vehicle speed v is shown over time t. Since there is a uniform vehicle speed v in this figure, the coasting strategy can simply be adapted to driver behavior.

도 3b에서도 마찬가지로 차량 속도(v)가 시간(t)에 걸쳐 도시되어 있으며, 이 경우 차량 속도는 매우 큰 변동을 겪는다. 직사각형(F) 앞에 놓여 있는 영역(E)에서는, 차량이 코스팅을 시도한다. 이 영역에서의 코스팅 과정은 극도로 짧으며, 이와 같은 상황은 현재의 교통 상황 및/또는 운전자 요구를 반영한다. 코스팅 과정을 상응하게 조정할 수 있기 위하여, 운전자 행동이 사전 설정된 x초의 기간 동안 관찰된다.Similarly in Fig. 3b the vehicle speed v is shown over time t, in which case the vehicle speed undergoes very large fluctuations. In the area E that lies before the rectangle F, the vehicle attempts coasting. The coasting process in this area is extremely short and this situation reflects the current traffic situation and / or driver needs. In order to be able to adjust the coasting process correspondingly, driver behavior is observed for a preset period of x seconds.

짧은 기간 동안 코스팅 과정이 자주 중단됨으로 인해, 직사각형(F)에 의해 표시된 영역에서는 코스팅 과정이 허용되지 않는다. 직사각형(F)을 벗어난 후에 비로소, 차량 속도가 재차 거의 일정한 영역(G)에서 코스팅 과정의 개시가 허용되는데, 그 이유는 과거의 y초 동안에는 운전자 행동이 거의 균일한 프로파일을 나타냈기 때문이다.Because the coasting process is often interrupted for a short period of time, the coasting process is not allowed in the area indicated by the rectangle (F). After leaving the rectangle F, the initiation of the coasting process is allowed in the region G, where the vehicle speed is still constant, because the driver's behavior exhibited a nearly uniform profile for y seconds in the past.

Claims (10)

코스팅 주행을 개시하기 위하여 기어가 맞물린 상태에서 파워 트레인으로부터 연소 기관을 분리하기 위해 클러치가 개방되고, 코스팅 주행을 종료하기 위하여 클러치가 체결되는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법에 있어서,
코스팅 주행의 개시 또는 종료는 운전자 행동에 따라 자동으로 결정되는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.To control the coasting run of a vehicle with an automatic clutch, wherein the clutch is opened to disconnect the combustion engine from the power train with the gear engaged to initiate the coasting run and the clutch is engaged to end the coasting run. In the method for
A start or end of a coasting run is automatically determined in accordance with driver behavior. 제1항에 있어서, 코스팅 주행의 종료는 사전 설정된 제동 동작에 따라서 이루어지는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.2. A method according to claim 1, characterized in that the end of the coasting run is made according to a predetermined braking action. 제2항에 있어서, 사전 설정된 제동 동작은 비상 제동으로서 이루어지는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.3. A method according to claim 2, characterized in that the predetermined braking action is made as an emergency braking. 제2항에 있어서, 상기 사전 설정된 제동 동작은, 브레이크 실린더 압력이 사전 설정된 압력 임계값에 미달되는 경우에 또는 연소 기관이 스위치 오프된 상태에서 모든 제동 동작들의 총 기간이 사전 설정된 기간을 초과하는 경우에 이루어지는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.The method of claim 2, wherein the preset braking operation is performed when the brake cylinder pressure is below the preset pressure threshold or when the total duration of all the braking operations exceeds the preset period while the combustion engine is switched off. A method for controlling a coasting run of a vehicle having an automatic clutch, characterized in that it comprises a. 제1항 내지 제4항 중 어느 한 항에 있어서, 차량의 현재 주행 상황은 주행 조작에 의해서 결정되며, 차량이 곡선을 주행하고 상기 곡선의 현재 곡률이 특정의 곡률 임계값을 초과할 때에 코스팅 주행의 개시가 저지되는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.The vehicle according to any one of claims 1 to 4, wherein the current driving situation of the vehicle is determined by the driving operation, and coasting when the vehicle runs the curve and the current curvature of the curve exceeds a specific curvature threshold value. A method for controlling coasting travel of a vehicle with an automatic clutch, characterized in that the onset of travel is impeded. 제1항 내지 제5항 중 어느 한 항에 있어서, 차량의 주행 상황이 차량 가속도에 의해서 결정되며, 현재의 차량 가속도가 제1 가속도 임계값에 미달될 때에는 코스팅 주행의 개시가 이루어지는 한편, 현재의 차량 가속도가 제2 가속도 임계값을 초과할 때에는 코스팅 주행의 종료가 이루어지는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.The driving condition of the vehicle according to any one of claims 1 to 5, wherein the driving condition of the vehicle is determined by the vehicle acceleration, and when the current vehicle acceleration falls below the first acceleration threshold, coasting driving is started, A coasting run is terminated when the vehicle acceleration exceeds the second acceleration threshold, wherein the coasting run of the vehicle with the automatic clutch is performed. 제6항에 있어서, 차량의 현재 차량 가속도는 하나 이상의 휠 회전 속도로부터 결정되며, 휠 회전 속도로부터 결정된 차량 가속도에 따라 차량의 오르막 주행 및/또는 내리막 주행에서 코스팅 주행이 저지되는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.7. A vehicle according to claim 6, wherein the current vehicle acceleration of the vehicle is determined from one or more wheel rotational speeds, and coasting travel is prevented in uphill and / or downhill driving of the vehicle according to the vehicle acceleration determined from the wheel rotational speed. And a coasting run of a vehicle having an automatic clutch. 제1항에 있어서, 운전자 행동은 온라인으로 결정되는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.The method of claim 1, wherein driver behavior is determined online. 제1항 또는 제8항에 있어서, 과거 기간의 운전자 행동이 평가되는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.9. A method according to claim 1 or 8, characterized in that the driver's behavior in the past period is evaluated. 제8항 또는 제9항에 있어서, 운전자 행동은 개인화된 운전자 프로파일과 조합되는 것을 특징으로 하는, 자동 클러치를 갖는 차량의 코스팅 주행을 제어하기 위한 방법.10. A method according to claim 8 or 9, wherein the driver behavior is combined with a personalized driver profile.
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