KR20170107244A - A method for controlling a velocity of vehicle in ssc entry condition and an apparatus the same - Google Patents

A method for controlling a velocity of vehicle in ssc entry condition and an apparatus the same Download PDF

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KR20170107244A
KR20170107244A KR1020160030935A KR20160030935A KR20170107244A KR 20170107244 A KR20170107244 A KR 20170107244A KR 1020160030935 A KR1020160030935 A KR 1020160030935A KR 20160030935 A KR20160030935 A KR 20160030935A KR 20170107244 A KR20170107244 A KR 20170107244A
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ssc
vehicle speed
vehicle
control
entry
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KR1020160030935A
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Korean (ko)
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이형주
조규진
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현대자동차주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W40/00Estimation 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
    • B60W40/10Estimation 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
    • B60W40/105Speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K31/00Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18018Start-stop drive, e.g. in a traffic jam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18072Coasting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/10Accelerator pedal position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/12Brake pedal position
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The present invention relates to a method for controlling the speed of a vehicle in a start-stop coasting (SSC) entry state and an apparatus for the same. The method for controlling the speed of a vehicle in a start-stop coasting (SSC) comprises: an SSC entry step (S100) in which a driving vehicle enters the SSC or the vehicle in an SSC entry state is maintained when the driving vehicle satisfies predetermined SSC entry conditions; a first determination step (S200) determining whether a growth rate of a vehicle speed is equal to or greater than predetermined reference acceleration after the SSC entry step (S100); and a first control step (S300) of engaging a clutch while fuel supply to an engine is stopped to stop the engine when the growth rate of a vehicle speed is determined to be greater than or equal to the reference acceleration by the first determination step (S200). According to the present invention, even if the vehicle enters the SSC in a section where the vehicle speed increases such as a downhill road, the vehicle is prevented from being excessively accelerated, thereby securing the safety of a driver. In addition, even if the vehicle enters the SSC in a section where the vehicle speed increases such as a downhill road, the method prevents the driver from activating a brake pedal and releasing the SSC, thereby maximizing fuel efficiency.

Description

SSC 진입상태에서의 차속제어방법 및 장치{A METHOD FOR CONTROLLING A VELOCITY OF VEHICLE IN SSC ENTRY CONDITION AND AN APPARATUS THE SAME}[0001] The present invention relates to a method and apparatus for controlling a vehicle speed in an SSC entering state,

본 발명은 SSC 진입상태에서의 차속제어방법 및 장치에 관한 것으로서, 보다 상세하게는 내리막길 등 차량의 속도가 증가하는 구간에서 SSC에 진입하는 경우에도, 차량이 지나치게 가속되는 것을 방지하는 방법 및 장치에 관한 것이다.The present invention relates to a vehicle speed control method and apparatus in an SSC entering state and more particularly to a method and an apparatus for preventing a vehicle from being excessively accelerated even when entering the SSC in a section where the speed of the vehicle increases, .

최근 들어, 공인된 인증 연비와 실제 도로 주행시 연비 간의 차이로 인하여, 소비자들의 불만이 가중되면서 실제 도로 주행시 연비 개선이 매우 중요해지고 있고, 따라서 자동차 업계에서는 차량 시스템만을 제어하는 것이 아니라, 운전자의 운전조건, 주변 교통상황 및 도로 정보 등을 이용하여 실제 도로 주행시 연비를 극대화할 수 있는 기술을 연구 및 개발하고 있다. In recent years, due to the difference between the certified fuel consumption rate and the actual mileage of fuel consumption, it is becoming more and more important to improve the fuel efficiency of the actual road as the consumer complains. Therefore, in the automobile industry, , The surrounding traffic situation, and the road information to maximize the fuel economy when driving on the road.

일 예로서, IT 및 교통정보를 활용하여 경제운전 경로를 탐색하고 안내하는 기술과, 도로의 경사정보 및 과거 주행패턴을 기억하여 효과적인 연비 운전을 안내하는 기술과, 도로 구배 및 교통 정보를 예측 및 판단하여 배터리의 SOC(State Of Charge) 수준에 따라 충/방전을 제어하는 기술과, 맵(Map) 정보 DB를 이용하여 도착지까지의 경로와 교통정보를 기반으로 연료 소비가 최소화되도록 주행모드를 선택적으로 제어하는 기술 등이 연구 개발되고 있다.For example, a technique of searching and guiding an economic driving route by utilizing IT and traffic information, a technique of guiding effective fuel economy driving by memorizing slope information and past driving patterns of a road, And a map information DB is used to select a driving mode so as to minimize fuel consumption based on the route to the destination and the traffic information based on the SOC (state of charge) level of the battery, And the like are being researched and developed.

상기와 같이 연비를 극대화할 수 있는 기술 중 하나로써, SSC(START/STOP COASTING)이 있다. 도 1은 SSC(START/STOP COASTING)에 대해 설명하는 도면이다. 도 1을 참조하면 SSC는 타력주행(Coasting) 시 엔진에 연료공급을 차단하고(Fuel cut), 변속기의 동력전달을 차단(Clutch Off)하는 기술이다(도 1(a) 참조). 이에 따라 엔진 드래그 토크가 차단되므로 종래 차량에 비해 주행거리가 증가하게 된다(도 1(b) 참조).As one of the technologies for maximizing the fuel efficiency as described above, there is the SSC (START / STOP COASTING). 1 is a view for explaining SSC (START / STOP COASTING). Referring to FIG. 1, the SSC is a technique of cutting off the fuel supply to the engine during coasting and cutting off the power transmission of the transmission (see FIG. 1 (a)). As a result, the engine drag torque is cut off, thereby increasing the travel distance as compared with the conventional vehicle (refer to FIG. 1 (b)).

그러나 내리막길 등 차량의 속도가 증가하는 구간에서 SSC에 진입하는 경우에는, 차량이 지나치게 가속되어 안전문제를 유발할 수 있는 문제점이 있었다.However, when the vehicle enters the SSC in a region where the speed of the vehicle is increasing, such as a downhill road, the vehicle is excessively accelerated, which may cause a safety problem.

또한, 상기와 같은 상황에서 운전자가 안전을 위해 브레이크페달을 작동시키는 경우에는, 곧바로 SSC가 해제되어 더이상 연비를 향상시킬 수 없는 문제점이 있었다.Further, in the above situation, when the driver operates the brake pedal for safety, the SSC is immediately released and the fuel consumption can not be improved any more.

미국공개특허공보 제2013-0131948호 (2013.05.23)U.S. Published Patent Application No. 2013-0131948 (May 31, 2013)

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 SSC 진입상태에서도 클러치의 체결 및 해제를 통해 차량의 속도를 일정범위 내에서 유지할 수 있는 SSC 진입상태에서의 차속제어방법 및 장치를 제공하는 것이다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle speed control method in an SSC entry state in which a speed of a vehicle can be maintained within a predetermined range through engagement and disengagement of a clutch even in an SSC entry state And an apparatus.

본 발명에 따른 SSC 진입상태에서의 차속제어방법은 주행중인 차량이 기설정된 SSC 진입조건을 만족하는 경우에는 SSC에 진입하거나 SSC 진입상태를 유지하는 SSC 진입단계(S100); 상기 SSC 진입단계(S100) 후, 차속증가율이 기설정된 기준가속도 이상인지 판단하는 제 1 판단단계(S200); 및 상기 제 1 판단단계(S200)에서 차속증가율이 기설정된 기준가속도 이상인 것으로 판단된 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시킨 상태에서 클러치를 체결하는 제 1 제어단계(S300);를 포함한다.A vehicle speed control method in an SSC entry state according to the present invention includes an SSC entry step (SlOO) for entering a SSC or maintaining an entry state of an SSC when a vehicle under running satisfies a preset SSC entry condition; A first determination step (S200) of determining, after the SSC entering step (S100), whether the vehicle speed increase rate is equal to or greater than a preset reference acceleration; And a first control step (S300) of stopping the fuel supply to the engine and locking the clutch with the engine stopped when it is determined that the vehicle speed increasing rate is equal to or greater than the predetermined reference acceleration in the first determining step (S200) .

상기 SSC 진입상태에서의 차속제어방법은 상기 제 1 제어단계(S300) 후, 차속감소율이 기설정된 기준감속도 이상인지 판단하는 제 2 판단단계(S400);를 포함하는 것을 특징으로 한다.The vehicle speed control method in the SSC entry state may include a second determining step (S400) of determining whether the vehicle speed reduction rate is equal to or greater than a predetermined reference deceleration rate after the first control step (S300).

상기 SSC 진입상태에서의 차속제어방법은 상기 제 2 판단단계(S400)에서 차속감소율이 기설정된 기준감속도 이상인 것으로 판단된 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시킨 상태에서 클러치를 해제하는 제 2 제어단계(S500);를 포함하는 것을 특징으로 한다.If it is determined in the second determination step (S400) that the vehicle speed reduction rate is equal to or greater than the predetermined reference deceleration, the vehicle speed control method in the SSC entering state is to stop the fuel supply to the engine, And a second control step (S500).

상기 SSC 진입상태에서의 차속제어방법은 상기 제 2 제어단계(S500) 후, 상기 제 1 판단단계(S200)를 다시 수행하는 것을 특징으로 한다.The vehicle speed control method in the SSC entry state is characterized in that the first determination step (S200) is performed again after the second control step (S500).

상기 SSC 진입상태에서의 차속제어방법은 상기 제 2 판단단계(S400)에서 차속감소율이 기설정된 기준감속도 미만인 것으로 판단된 경우에는, 상기 제 2 판단단계(S400)를 다시 수행하는 것을 특징으로 한다.In the vehicle speed control method in the SSC entering state, if it is determined in the second determination step (S400) that the vehicle speed reduction rate is less than the predetermined reference deceleration, the second determination step (S400) is performed again .

상기 SSC 진입상태에서의 차속제어방법은 상기 제 1 판단단계(S200)에서 차속증가율이 기설정된 기준가속도 미만인 것으로 판단된 경우에는, 상기 SSC 진입단계(S100)를 수행하는 것을 특징으로 한다.In the vehicle speed control method in the SSC entering state, when it is determined in the first determining step (S200) that the vehicle speed increasing rate is less than the preset reference acceleration, the SSC entering step S100 is performed.

상기 SSC 진입단계(S100)에서 기설정된 SSC 진입조건은 엑셀페달이 작동하지 않고, 브레이크페달이 작동하지 않으며, 현재 차속이 기설정된 진입차속 이상인 것을 특징으로 한다.The SSC entry condition set in the SSC entry step (S100) is characterized in that the excel pedal does not operate, the brake pedal does not operate, and the current vehicle speed is not less than a predetermined entry vehicle speed.

상기 SSC 진입단계(S100)는, 주행중인 차량이 상기 기설정된 SSC 진입조건을 만족하는 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시키고, 클러치를 해제하는 것을 특징으로 한다.The SSC entry step (SlOO) is characterized in that, when the vehicle under running satisfies the predetermined SSC entry condition, the supply of fuel to the engine is stopped, the engine is stopped, and the clutch is released.

본 발명에 따른 저장매체에는 상기 SSC 진입상태에서의 차속제어방법이 저장된다.The vehicle speed control method in the SSC entry state is stored in the storage medium according to the present invention.

본 발명에 따른 SSC 진입상태에서의 차속제어장치는 상기 저장매체(100); 현재 차속, 현재 차속변화율, 엑셀페달 및 브레이크페달의 작동여부를 감지하는 감지부(200); 및 상기 감지부(200)에서 감지한 현재 차속, 현재 차속변화율, 엑셀페달 및 브레이크페달의 작동여부를 이용하여, 상기 저장매체(100)에 저장된 SSC의 단계적 해제방법에 따라, 클러치(400)를 제어하는 제어부(300);를 포함한다.The vehicle speed control apparatus in the SSC entry state according to the present invention includes the storage medium 100; A sensing unit 200 for sensing the current vehicle speed, the current vehicle speed change rate, the operation of the excel pedal and the brake pedal; And the clutch 400 according to the stepwise release method of the SSC stored in the storage medium 100 by using the current vehicle speed, the current vehicle speed change rate, the operation of the accelerator pedal and the brake pedal sensed by the sensing unit 200, And a control unit 300 for controlling the display unit 300.

상기 감지부(200)는 현재 차량의 속도를 감지하는 차속감지부(210); 현재 차량의 단위시간당 속도변화량을 감지하는 차속변화율 감지부(220); 엑셀페달의 작동여부를 감지하는 APS(ACCELERATOR PEDAL POSITION SENSOR, 230); 및 브레이크페달의 작동여부를 감지하는 BPS(BRAKE PEDAL POSITION SENSOR, 240);를 포함하는 것을 특징으로 한다.The sensing unit 200 includes a vehicle speed sensing unit 210 for sensing the speed of the vehicle. A vehicle speed change rate sensing unit 220 for sensing a speed change amount per unit time of the current vehicle; An ACCELERATOR PEDAL POSITION SENSOR (APS) 230 for detecting the operation of the Excel pedal; And a brake pedal position sensor (BPS) 240 for detecting whether the brake pedal is operated or not.

상기에서 살펴본 바와 같이 본 발명에 따르면, 내리막길 등 차량의 속도가 증가하는 구간에서 SSC에 진입하는 경우에도, 차량이 지나치게 가속되는 것을 방지하여 운전자의 안전을 보호할 수 있다. As described above, according to the present invention, it is possible to prevent the vehicle from being excessively accelerated even when entering the SSC in a section where the speed of the vehicle increases, such as a downhill road, thereby protecting the driver's safety.

또한, 이에 따라 내리막길 등 차량의 속도가 증가하는 구간에서 SSC에 진입하는 경우에도, 운전자가 브레이크페달을 작동시켜 SSC를 해제하는 것을 방지하여, 연비향상을 극대화할 수 있다.Accordingly, even when the vehicle enters the SSC in a section where the speed of the vehicle increases such as a downhill road, the driver can prevent the SSC from being released by operating the brake pedal, thereby maximizing the fuel economy improvement.

도 1은 SSC에 대해 설명하는 도면.
도 2는 본 발명에 따른 SSC 진입상태에서의 차속제어방법의 순서도.
도 3은 본 발명에 따른 SSC 진입상태에서의 차속제어장치의 블록도.
1 is a view for explaining SSC;
2 is a flowchart of a vehicle speed control method in an SSC entry state according to the present invention.
3 is a block diagram of a vehicle speed control apparatus in an SSC entry state according to the present invention.

본 명세서 및 청구범위에서 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서, 본 명세서에 기재된 실시 예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시 예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형 예들이 있을 수 있음을 이해하여야 한다. 또한, 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다. 이하 본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 상세히 설명하기로 한다.It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term to describe its invention in the best way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 SSC 진입상태에서의 차속제어방법의 순서도이다. 도 2를 참조할 때, 본 발명에 따른 SSC 진입상태에서의 차속제어방법은 SSC 진입단계(S100), 제 1 판단단계(S200), 제 1 제어단계(S300), 제 2 판단단계(S400) 및 제 2 제어단계(S500)를 포함한다.2 is a flowchart of a vehicle speed control method in an SSC entry state according to the present invention. Referring to FIG. 2, the vehicle speed control method in the SSC entry state according to the present invention includes an SSC entry step S100, a first determination step S200, a first control step S300, a second determination step S400, And a second control step (S500).

SSC 진입단계(S100)는 주행중인 차량이 기설정된 SSC 진입조건을 만족하는 경우에는 SSC에 진입하거나 SSC 진입상태를 유지하는 단계이다. 이때, 상기 기설정된 SSC 진입조건은 엑셀페달이 작동하지 않고, 브레이크페달이 작동하지 않으며, 현재 차속이 기설정된 기준차속 이상인 조건일 수 있다. The SSC entry step S100 is a step of entering the SSC or maintaining the SSC entry state when the vehicle under running satisfies the preset SSC entry condition. At this time, the predetermined SSC entry condition may be a condition in which the excel pedal does not operate, the brake pedal does not operate, and the present vehicle speed is equal to or greater than a predetermined reference vehicle speed.

즉, 엑셀페달 및 브레이크페달이 작동하지 않으므로 운전자의 가속 또는 감속의지가 없는 것이다. 또한, 현재 차속이 기설정된 기준차속 이상이므로, 충분히 SSC를 수행할 수 있는 것이다. 이때, 상기 기설정된 기준차속은 차량이 타행주행(Coasting)을 수행할 수 있는 최저속도로서, 차량의 종류 또는 설계자의 의도 등에 따라 달리 설정될 수 있다.That is, the accelerator pedal and the brake pedal do not operate, and therefore there is no need to accelerate or decelerate the driver. Further, since the current vehicle speed is equal to or higher than the preset reference vehicle speed, the SSC can be sufficiently performed. At this time, the preset reference vehicle speed is a minimum speed at which the vehicle can perform coasting, and may be set differently depending on the type of vehicle or the designer's intention.

또한, 상기 SSC 진입단계(S100)에서는 주행중인 차량이 상기 기설정된 SSC 진입조건을 만족하는 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시키고, 클러치를 해제한다. 즉, 상기 SSC 진입단계(S100)에서는 엔진에 연료공급을 차단(Fuel cut)하여 엔진을 정지시키고, 클러치를 해제(Clutch Off)하여 변속기의 동력전달을 차단함으로써, SSC를 개시하여 차량의 연비를 개선하는 것이다. In the SSC entry step S100, when the vehicle under running satisfies the predetermined SSC entry condition, the supply of fuel to the engine is stopped to stop the engine and release the clutch. That is, in the SSC entering step S100, the SSC is started to cut fuel consumption of the vehicle by cutting off the fuel supply to the engine (Fuel cut) to stop the engine, and to release the clutch (Clutch Off) To improve.

제 1 판단단계(S200)는 상기 SSC 진입단계(S100) 후, 차속증가율이 기설정된 기준가속도 이상인지 판단하는 단계이고, 제 1 제어단계(S300)는 상기 제 1 판단단계(S200)에서 차속증가율이 기설정된 기준가속도 이상인 것으로 판단된 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시킨 상태에서 클러치를 체결하는 단계이다.The first determination step S200 is a step of determining whether the vehicle speed increase rate is equal to or greater than a preset reference acceleration level after the SSC entry step S100. In a first control step S300, When it is determined that the engine speed is equal to or higher than the preset reference acceleration, the engine is stopped and the engine is stopped.

즉, SSC 진입에 따른 타력주행(Coasting)시, 차량의 속도가 지나치게 높아질 우려가 있는 경우에는 클러치를 체결하여 차량을 감속시키는 것이다. 엔진이 정지된 상태에서 클러치를 체결하면, 엔진 브레이크 효과에 의해 차량이 감속된다. 이를 위해, SSC에 따른 연비향상효과를 포기하고 클러치를 체결하여 운전자의 안전을 보호하는 것이다. 또한, 결과적으로 운전자의 브레이크페달 작동을 최소화함으로써, 오히려 결과적으로는 연비가 향상될 수도 있다.That is, when there is a possibility that the speed of the vehicle becomes excessively high at the time of coasting due to the entry into the SSC, the clutch is engaged to decelerate the vehicle. When the clutch is engaged with the engine stopped, the vehicle is decelerated by the engine brake effect. For this purpose, it is necessary to abandon the effect of improving the fuel economy according to the SSC and to secure the safety of the driver by engaging the clutch. As a result, by minimizing the driver ' s brake pedal operation, the fuel economy may be improved as a result.

상기 기설정된 기준가속도는 차량의 종류, 설계자의 의도 또는 운전자의 성향에 따라 달리 설정될 수도 있다. 예를 들어, 상기 기설정된 기준가속도는 초당 5km/h일 수도 있으나, 반드시 이에 한정되는 것은 아니다.The preset reference acceleration may be set differently according to the type of the vehicle, the intention of the designer, or the driver's tendency. For example, the preset reference acceleration may be 5 km / h per second, but is not limited thereto.

제 2 판단단계(S400)는 상기 제 1 제어단계(S300) 후, 차속감소율이 기설정된 기준감속도 이상인지 판단하는 단계이고, 제 2 제어단계(S500)는 상기 제 2 판단단계(S400)에서 차속감소율이 기설정된 기준감속도 이상인 것으로 판단된 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시킨 상태에서 클러치를 해제하는 단계이다.The second determination step S400 is a step of determining whether the vehicle speed reduction rate is equal to or greater than a predetermined reference deceleration after the first control step S300 and the second control step S500 is a step of determining, When it is determined that the vehicle speed reduction rate is equal to or higher than the predetermined reference deceleration, the fuel supply is stopped and the clutch is released with the engine stopped.

즉, 상기 제 1 제어단계(S300)에서의 클러치 체결에 의해 차량은 계속적으로 감속된다. 이때의 감속도가 지나치게 크면, SSC에 따른 연비향상효과 중 지나치게 많은 부분을 포기하는 결과가 된다. 따라서, 상기 제 1 제어단계(S300) 후, 차속감소율이 기설정된 기준감속도 이상인 경우에는, 클러치를 해제하여 엔진 브레이크 효과를 제거하고, 타행주행에 의해 차량의 연비를 향상시키는 것이다.That is, the vehicle is continuously decelerated by the clutch engagement in the first control step (S300). If the deceleration is too large, the SSC gives up too much of the fuel economy improvement effect. Therefore, after the first control step (S300), when the vehicle speed reduction rate is equal to or higher than the predetermined reference deceleration, the clutch is released to eliminate the engine brake effect, and the fuel economy of the vehicle is improved by the other running.

상기 기설정된 기준감속도는 차량의 종류, 설계자의 의도 또는 운전자의 성향에 따라 달리 설정될 수도 있다. 예를 들어, 상기 기설정된 기준감속도는 초당 3km/h일 수도 있으나, 반드시 이에 한정되는 것은 아니다.The predetermined reference deceleration may be set differently according to the type of the vehicle, the intention of the designer, or the driver's tendency. For example, the predetermined reference deceleration may be 3 km / h per second, but is not limited thereto.

단, 상기 제 2 판단단계(S400)에서 차속감소율이 기설정된 기준감속도 미만인 것으로 판단된 경우에는, 상기 제 2 판단단계(S400)를 다시 수행한다. 즉, 상기 제 1 제어단계(S300)에서의 클러치 체결에 의해 차량은 계속적으로 감속되나, 이때의 감속도가 크지않은 경우에는, 운전자의 안전을 고려하여 클러치를 체결한 상태를 유지하는 것이다. 이에 따라, 차량의 속도는 계속적으로 저감되고, 운전자는 브레이크작동을 최소화할 수 있는 것이다.However, if it is determined in the second determination step (S400) that the vehicle speed reduction rate is less than the predetermined reference deceleration, the second determination step (S400) is performed again. That is, the vehicle is continuously decelerated by the clutch engagement in the first control step (S300), but when the deceleration at this time is not large, the state in which the clutch is engaged is maintained in consideration of the safety of the driver. Accordingly, the speed of the vehicle is continuously reduced, and the driver can minimize the braking operation.

또한, 상기 제 2 제어단계(S500) 후, 상기 제 1 판단단계(S200)를 다시 수행할 수 있다. 즉, 제 2 제어단계(S500)에서 클러치를 해제하면, 다시 차량의 속도가 지나치게 높아질 우려가 있다. 따라서, 상기 제 1 판단단계(S200) 및 상기 제 1 제어단계(S300)를 수행하여, 클러치 체결을 통햐 차량을 감속시키는 것이다. In addition, after the second control step (S500), the first determination step (S200) may be performed again. That is, if the clutch is released in the second control step (S500), the speed of the vehicle may again become excessively high. Therefore, the first determination step (S200) and the first control step (S300) are performed to decelerate the vehicle to be engaged in the clutch engagement.

또한, 상기 제 1 판단단계(S200)에서 차속증가율이 기설정된 기준가속도 미만인 것으로 판단된 경우에는, 상기 SSC 진입단계(S100)를 수행한다. 즉, 차량의 속도가 지나치게 높아질 우려가 없는 경우이므로, SSC 진입상태를 유지하여 차량의 연비를 최대한 향상시키는 것이다. If it is determined in step S200 that the vehicle speed increase rate is less than the predetermined reference acceleration, the SSC entry step S100 is performed. That is, since there is no possibility that the speed of the vehicle will be excessively high, it is possible to maintain the state of entry into the SSC to maximize the fuel efficiency of the vehicle.

도 3은 본 발명에 따른 SSC 진입상태에서의 차속제어장치의 블록도이다. 도 3을 참조할 때, 본 발명에 따른 SSC 진입상태에서의 차속제어장치는 저장매체(100), 감지부(200) 및 제어부(300)를 포함한다.3 is a block diagram of a vehicle speed control apparatus in an SSC entry state according to the present invention. Referring to FIG. 3, the vehicle speed control apparatus in the SSC entry state according to the present invention includes a storage medium 100, a sensing unit 200, and a control unit 300.

저장매체(100)에는 상기 SSC 진입상태에서의 차속제어방법이 저장된다.The storage medium 100 stores the vehicle speed control method in the SSC entry state.

감지부(200)는 현재 차속, 현재 차속변화율, 엑셀페달 및 브레이크페달의 작동여부를 감지하며, 현재 차량의 속도를 감지하는 차속감지부(210), 현재 차량의 단위시간당 속도변화량을 감지하는 차속변화율 감지부(220), 엑셀페달의 작동여부를 감지하는 APS(ACCELERATOR PEDAL POSITION SENSOR, 230) 및 브레이크페달의 작동여부를 감지하는 BPS(BRAKE PEDAL POSITION SENSOR, 240)를 포함한다.The sensing unit 200 senses the current vehicle speed, the current vehicle speed change rate, the operation of the excel pedal and the brake pedal, detects the current speed of the vehicle, the vehicle speed sensing unit 210, A change rate sensing unit 220, an accelerator pedal position sensor (APS) 230 for sensing whether the accelerator pedal is operated, and a brake pedal position sensor 240 for sensing whether the brake pedal is operated.

제어부(300)는 상기 감지부(200)에서 감지한 현재 차속, 현재 차속변화율, 엑셀페달 및 브레이크페달의 작동여부를 이용하여, 상기 저장매체(100)에 저장된 SSC의 단계적 해제방법에 따라, 클러치(400)를 제어한다.The control unit 300 may control the stepwise release of the SSC stored in the storage medium 100 using the present vehicle speed, the current vehicle speed change rate, the operation of the accelerator pedal and the brake pedal sensed by the sensing unit 200, (400).

앞서 살펴본 실시 예는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자(이하 '당업자'라 한다)가 본 발명을 용이하게 실시할 수 있도록 하는 바람직한 실시 예일 뿐, 전술한 실시 예 및 첨부한 도면에 한정되는 것은 아니므로 이로 인해 본 발명의 권리범위가 한정되는 것은 아니다. 따라서, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하다는 것이 당업자에게 있어 명백할 것이며, 당업자에 의해 용이하게 변경 가능한 부분도 본 발명의 권리범위에 포함됨은 자명하다.It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, as claimed, and will be fully understood by those of ordinary skill in the art. The present invention is not limited thereto. It will be apparent to those skilled in the art that various substitutions, modifications and variations are possible within the scope of the present invention, and it is obvious that those parts easily changeable by those skilled in the art are included in the scope of the present invention .

100 저장매체
200 감지부
210 차속감지부
220 차속변화율 감지부
230 APS
240 BPS
300 제어부
400 클러치
100 storage medium
200 sensing unit
210 vehicle speed sensing unit
220 vehicle speed change rate sensing unit
230 APS
240 BPS
300 control unit
400 clutch

Claims (14)

주행중인 차량이 기설정된 SSC 진입조건을 만족하는 경우에는 SSC에 진입하거나 SSC 진입상태를 유지하는 SSC 진입단계(S100);
상기 SSC 진입단계(S100) 후, 차속증가율이 기설정된 기준가속도 이상인지 판단하는 제 1 판단단계(S200); 및
상기 제 1 판단단계(S200)에서 차속증가율이 기설정된 기준가속도 이상인 것으로 판단된 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시킨 상태에서 클러치를 체결하는 제 1 제어단계(S300);
를 포함하는 SSC 진입상태에서의 차속제어방법.
An SSC entry step (SlOO) in which the SSC entry state or the SSC entry state is maintained when the vehicle under running satisfies the predetermined SSC entry condition;
A first determination step (S200) of determining, after the SSC entering step (S100), whether the vehicle speed increase rate is equal to or greater than a preset reference acceleration; And
A first control step (S300) of, when it is determined in the first determining step (S200) that the vehicle speed increase rate is equal to or greater than the predetermined reference acceleration, stopping the fuel supply to the engine and locking the clutch with the engine stopped;
The vehicle speed control method comprising:
제 1항에 있어서,
상기 제 1 제어단계(S300) 후, 차속감소율이 기설정된 기준감속도 이상인지 판단하는 제 2 판단단계(S400);
를 포함하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
The method according to claim 1,
A second determination step (S400) of determining, after the first control step (S300), whether the vehicle speed reduction rate is equal to or greater than a predetermined reference deceleration;
And controlling the vehicle speed in the SSC entering state.
제 2항에 있어서,
상기 제 2 판단단계(S400)에서 차속감소율이 기설정된 기준감속도 이상인 것으로 판단된 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시킨 상태에서 클러치를 해제하는 제 2 제어단계(S500);
를 포함하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
3. The method of claim 2,
A second control step (S500) of releasing the clutch in a state in which the fuel supply to the engine is stopped and the engine is stopped when it is determined in the second determination step (S400) that the vehicle speed reduction rate is equal to or higher than the predetermined reference deceleration;
And controlling the vehicle speed in the SSC entering state.
제 3항에 있어서,
상기 제 2 제어단계(S500) 후, 상기 제 1 판단단계(S200)를 다시 수행하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
The method of claim 3,
After the second control step (S500), the first determination step (S200) is performed again.
제 2항에 있어서,
상기 제 2 판단단계(S400)에서 차속감소율이 기설정된 기준감속도 미만인 것으로 판단된 경우에는, 상기 제 2 판단단계(S400)를 다시 수행하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
3. The method of claim 2,
If it is determined in the second determination step (S400) that the vehicle speed reduction rate is less than the predetermined reference deceleration, the second determination step (S400) is performed again.
제 1항에 있어서,
상기 제 1 판단단계(S200)에서 차속증가율이 기설정된 기준가속도 미만인 것으로 판단된 경우에는, 상기 SSC 진입단계(S100)를 수행하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
The method according to claim 1,
Wherein the SSC step S100 is performed when the vehicle speed increase rate is less than the predetermined reference acceleration in the first determining step S200.
제 1항에 있어서,
상기 SSC 진입단계(S100)에서 기설정된 SSC 진입조건은 엑셀페달이 작동하지 않고, 브레이크페달이 작동하지 않으며, 현재 차속이 기설정된 진입차속 이상인 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
The method according to claim 1,
The SSC entry condition set in the SSC entering step S100 is that the excel pedal does not operate, the brake pedal does not operate, and the current vehicle speed is not less than a predetermined entry vehicle speed.
제 1항에 있어서,
상기 SSC 진입단계(S100)는, 주행중인 차량이 상기 기설정된 SSC 진입조건을 만족하는 경우에는, 엔진에 연료공급을 중단하여 엔진을 정지시키고, 클러치를 해제하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어방법.
The method according to claim 1,
The SSC entry step (SlOO) stops fuel supply to the engine to stop the engine and releases the clutch when the vehicle under running satisfies the predetermined SSC entry condition. Vehicle speed control method.
제 1항 내지 제 8항 중 어느 한 항의 SSC 진입상태에서의 차속제어방법이 저장된 저장매체.A storage medium storing a vehicle speed control method in an SSC entry state according to any one of claims 1 to 8. 제 9항의 저장매체(100);
현재 차속, 현재 차속변화율, 엑셀페달 및 브레이크페달의 작동여부를 감지하는 감지부(200);
상기 감지부(200)에서 감지한 현재 차속, 현재 차속변화율, 엑셀페달 및 브레이크페달의 작동여부를 이용하여, 상기 저장매체(100)에 저장된 SSC의 단계적 해제방법에 따라, 클러치(400)를 제어하는 제어부(300);
를 포함하는 SSC 진입상태에서의 차속제어장치.
A storage medium (100) according to claim 9;
A sensing unit 200 for sensing the current vehicle speed, the current vehicle speed change rate, the operation of the excel pedal and the brake pedal;
The clutch 400 is controlled according to the stepwise release method of the SSC stored in the storage medium 100 by using the current vehicle speed, the current vehicle speed change rate, the operation of the accelerator pedal and the brake pedal sensed by the sensing unit 200, A control unit 300 for controlling the control unit 300;
The vehicle speed control apparatus comprising:
제 10항에 있어서,
상기 감지부(200)는 현재 차량의 속도를 감지하는 차속감지부(210);
를 포함하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어장치.
11. The method of claim 10,
The sensing unit 200 includes a vehicle speed sensing unit 210 for sensing the speed of the vehicle.
Wherein the SSC controller is operable to control the speed of the vehicle in the SSC state.
제 11항에 있어서,
상기 감지부(200)는 현재 차량의 단위시간당 속도변화량을 감지하는 차속변화율 감지부(220);
를 포함하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어장치.
12. The method of claim 11,
The sensing unit 200 includes a vehicle speed change rate sensing unit 220 that senses a speed change amount per unit time of the current vehicle.
Wherein the SSC controller is operable to control the speed of the vehicle in the SSC state.
제 12항에 있어서,
상기 감지부(200)는 엑셀페달의 작동여부를 감지하는 APS(ACCELERATOR PEDAL POSITION SENSOR, 230);
를 포함하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어장치.
13. The method of claim 12,
The sensing unit 200 includes an ACCELERATOR PEDAL POSITION SENSOR (APS) 230 for sensing whether an Excel pedal is operated or not.
Wherein the SSC controller is operable to control the speed of the vehicle in the SSC state.
제 13항에 있어서,
상기 감지부(200)는 브레이크페달의 작동여부를 감지하는 BPS(BRAKE PEDAL POSITION SENSOR, 240);
를 포함하는 것을 특징으로 하는 SSC 진입상태에서의 차속제어장치.
14. The method of claim 13,
The sensing unit 200 includes a brake pedal sensor (BPS) 240 for detecting whether the brake pedal is operated or not.
Wherein the SSC controller is operable to control the speed of the vehicle in the SSC state.
KR1020160030935A 2016-03-15 2016-03-15 A method for controlling a velocity of vehicle in ssc entry condition and an apparatus the same KR20170107244A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2559546A (en) * 2017-02-01 2018-08-15 Jaguar Land Rover Ltd Apparatus, method and computer program for controlling a vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2559546A (en) * 2017-02-01 2018-08-15 Jaguar Land Rover Ltd Apparatus, method and computer program for controlling a vehicle
GB2559546B (en) * 2017-02-01 2020-06-17 Jaguar Land Rover Ltd Apparatus, method and computer program for controlling a vehicle
US11247681B2 (en) 2017-02-01 2022-02-15 Jaguar Land Rover Limited Apparatus, method and computer program for controlling a vehicle
US11926324B2 (en) 2017-02-01 2024-03-12 Jaguar Land Rover Limited Apparatus, method and computer program for controlling a vehicle

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