KR100452259B1 - Speed controlling method of vehicle - Google Patents
Speed controlling method of vehicle Download PDFInfo
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- KR100452259B1 KR100452259B1 KR10-2002-0003252A KR20020003252A KR100452259B1 KR 100452259 B1 KR100452259 B1 KR 100452259B1 KR 20020003252 A KR20020003252 A KR 20020003252A KR 100452259 B1 KR100452259 B1 KR 100452259B1
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- South Korea
- Prior art keywords
- vehicle
- vehicle speed
- soft
- speed
- limit control
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000001133 acceleration Effects 0.000 claims description 6
- 230000004043 responsiveness Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 16
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- 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
- B60K31/00—Vehicle 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
- B60K31/02—Vehicle 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 including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically
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- 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
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
- B60K26/021—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements with means for providing feel, e.g. by changing pedal force characteristics
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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
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
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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
- 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
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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
- 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
- B60W40/105—Speed
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- 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
- B60Y2300/14—Cruise control
- B60Y2300/143—Speed control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
본 발명은 차량이 주행하는 도로의 오르막길과 내리막길이 반복되는 구간에서 차량의 주행 응답성을 향상시킬 수 있는 차량의 차속 제어방법에 관한 것이다. 본 발명은 차량의 차속 제어방법에 있어서, 소프트 스피드 리미트(Soft Speed Limit) 제어조건을 판단하는 단계와; 소프트 스피드 리미트 제어조건이면, 소프트 스피드 리미트 제어동작 수행을 위한 조건을 판단하는 단계와; 소프트 스피드 리미트 제어동작 수행 조건을 만족하면 설정시간 동안 소프트 스피드 리미트 제어동작을 수행한 후 소프트 리미트 제어동작을 해제하는 단계를 포함하여 이루어진다.The present invention relates to a vehicle speed control method for improving a vehicle's driving responsiveness in a section in which an uphill road and a downhill road of a road on which the vehicle travels is repeated. The present invention provides a vehicle speed control method comprising the steps of: determining a soft speed limit control condition; If a soft speed limit control condition, determining a condition for performing a soft speed limit control operation; If the condition for performing the soft speed limit control operation is satisfied, the method may include performing the soft speed limit control operation for a set time and then releasing the soft limit control operation.
Description
본 발명은 차량에 관한 것으로서, 특히 차량의 차속 제어방법에 관한 것이다.The present invention relates to a vehicle, and more particularly, to a vehicle speed control method of a vehicle.
통상적으로, 상용 차량의 속도제한 제어는 관련법규에 규정된 속도를 초과하지 못하도록 가속 페달(Accel Pedal)또는 연료량을 조정하는 방식을 사용한다.In general, speed limit control of a commercial vehicle uses a method of adjusting an accelerator pedal or a fuel amount so as not to exceed a speed prescribed by related laws and regulations.
도 1을 참조하면, 종래 기술에 따른 차량의 차속 제어장치의 구성은 가속 페달(110)(Accel Pedal), 가속 케이블(120)(Accel Cable), 차속 센서(130), 분사 펌프(140)(Injection Pump), 모터(150)(Motor), 엔진 제어부(160)(ECU)를 포함한다.Referring to Figure 1, the configuration of the vehicle speed control apparatus according to the prior art is the accelerator pedal 110 (Accel Pedal), the acceleration cable 120 (Accel Cable), the vehicle speed sensor 130, the injection pump 140 ( Injection pump), a motor 150 (Motor), and an engine control unit 160 (ECU).
먼저, 가속 페달(110)은 기계식 페달로 분사 펌프(140)의 레버(Lever)와 케이블(Cable)로 연결되며, 가속 페달(110) 답입량 변화는 엔진 제어부(160)로 공급되어 연료량 제어를 위한 데이터로 사용된다.First, the accelerator pedal 110 is a mechanical pedal connected to the lever (Lever) and the cable (Cable) of the injection pump 140, the change in the depression amount of the pedal pedal 110 is supplied to the engine control unit 160 to control the fuel amount Used as data for.
가속 케이블(120)은 와이어(Wire)로 가속 페달(110)과 분사 펌프(140)에 연결되어 각각의 작동을 동기화 시킨다.The acceleration cable 120 is connected to the accelerator pedal 110 and the injection pump 140 by a wire to synchronize the respective operations.
차속 센서(130)는 변속기(T/M)에 위치하며 차량의 속도를 센싱하여 엔진 제어부(160)로 전달한다.The vehicle speed sensor 130 is located in the transmission T / M and senses the speed of the vehicle and transmits it to the engine controller 160.
분사 펌프(140)는 가속 페달(110)의 답입량 변화에 따라 엔진에 공급되는 연료량을 조절하여 엔진 회전수(RPM)를 조정한다.The injection pump 140 adjusts the engine speed RPM by adjusting the amount of fuel supplied to the engine according to the change in the depression amount of the accelerator pedal 110.
모터(150)는 엔진 제어부(160)에 의하여 인젝션 레버(Injection Lever)를 가속 케이블(120) 작동과 반대방향으로 작동하여 연료공급을 차단한다.The motor 150 cuts fuel supply by operating the injection lever by the engine controller 160 in the opposite direction to the operation of the acceleration cable 120.
엔진 제어부(160)는 주행 차속이 기억(Memory)된 제한 차속을 초과시 엔진 회전수 감소를 위해 모터(150)를 작동하여 차속을 제한시킨다.The engine control unit 160 limits the vehicle speed by operating the motor 150 to reduce the engine speed when the traveling vehicle speed exceeds the limit vehicle speed stored in the memory.
위와 같은 구성으로, 내리막길과 오르막길이 반복되는 구간에서 차속을 일정하게 제어할 경우 종래에는 오르막길 초기시점에서 차속 감소 및 연료 소모가 큰 문제점이 있었다.With the above configuration, when the vehicle speed is constantly controlled in the section in which the downhill and the uphill are repeated, the vehicle speed decrease and fuel consumption are large at the initial point of the uphill.
즉, 국내 고속도로 여건상 오르막길과 내리막길을 운행이 잦은 구간에서 종래의 차속 제한을 위한 제어장치는 도로 상태와 무관하게 속도를 설정 차속으로 제한함으로써 내리막길후 오르막길 주행시 초기 속도 감소 및 연료 소모가 많았다.In other words, the control device for limiting the vehicle speed in the section of frequent driving uphill and downhill on domestic highway conditions has reduced initial speed and fuel consumption when driving uphill after downhill by limiting the speed to the set vehicle speed regardless of road conditions.
이러한 이유로 차량이 주행하는 도로의 오르막길과 내리막길이 반복되는 구간에서 차량의 주행 응답성 향상을 위한 차속 제한 일시 해제기능인 소프트 스피드 리미트(Soft Speed Limit) 기능의 적용이 필요하였다.For this reason, it is necessary to apply the Soft Speed Limit function, which temporarily releases the vehicle speed limit function to improve the driving responsiveness of the vehicle in a section where the uphill and the downhill of the road on which the vehicle runs is repeated.
본 발명의 목적은 차량이 주행하는 도로의 오르막길과 내리막길이 반복되는 구간에서 차량의 주행 응답성을 향상시킬 수 있는 차량의 차속 제어방법을 제공하는데 있다.Disclosure of Invention An object of the present invention is to provide a vehicle speed control method of improving a vehicle's driving responsiveness in a section in which an uphill road and a downhill road are repeated.
도 1은 종래 기술에 따른 차량의 차속 제어장치 구성을 도시한 도면.1 is a view showing a vehicle speed control apparatus configuration according to the prior art.
도 2는 본 발명의 실시예에 따른 차량의 차속 제어장치의 구성을 도시한 블록도.Figure 2 is a block diagram showing the configuration of a vehicle speed control apparatus for a vehicle according to an embodiment of the present invention.
도 3은 본 발명의 실시예에 따른 차량의 차속 제어방법을 도시한 흐름도.3 is a flowchart illustrating a vehicle speed control method of a vehicle according to an exemplary embodiment of the present invention.
도 4는 본 발명의 실시예에 따른 속도 제한 차속과 증가된 속도 제한 차속의 관계를 도시한 도면.4 is a diagram illustrating a relationship between a speed limit vehicle speed and an increased speed limit vehicle speed according to an embodiment of the present invention.
도 5는 본 발명의 실시예에 따른 차량의 차속 제어과정을 도시한 타이밍도.5 is a timing diagram illustrating a vehicle speed control process of a vehicle according to an exemplary embodiment of the present invention.
도 6은 본 발명의 실시예에 따른 차속과 유지시간의 관계를 도시한 도면.6 is a diagram illustrating a relationship between a vehicle speed and a holding time according to an embodiment of the present invention.
상기와 같은 목적을 달성하기 위하여 본 발명은 차량의 차속 제어방법에 있어서, 소프트 스피드 리미트(Soft Speed Limit) 제어조건을 판단하는 단계와; 소프트 스피드 리미트 제어조건이면, 소프트 스피드 리미트 제어동작 수행을 위한 조건을 판단하는 단계와; 소프트 스피드 리미트 제어동작 수행 조건을 만족하면 설정시간 동안 소프트 스피드 리미트 제어동작을 수행한 후 소프트 리미트 제어동작을 해제하는 단계를 포함하여 이루어지는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a vehicle speed control method comprising the steps of: determining a soft speed limit control condition; If a soft speed limit control condition, determining a condition for performing a soft speed limit control operation; When the condition for performing the soft speed limit control operation is satisfied, the method may include performing the soft speed limit control operation for a set time and then releasing the soft limit control operation.
이하 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다. 하기 설명 및 첨부 도면과 같은 많은 특정 상세들이 본 발명의 보다 전반적인 이해를 제공하기 위해 나타나 있으나, 이들 특정 상세들은 본 발명의 설명을 위해 예시한 것으로 본 발명이 그들에 한정됨을 의미하는 것은 아니다. 그리고 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.
도 2내지 도 6을 참조하여 본 발명의 실시예에 따른 차량의 차속 제어방법을 설명한다.A vehicle speed control method of a vehicle according to an exemplary embodiment of the present invention will be described with reference to FIGS. 2 to 6.
먼저, 도 2를 참조하여 본 발명의 실시예에 따른 차량의 차속 제어장치의 구성을 설명한다.First, the configuration of a vehicle speed control apparatus for a vehicle according to an exemplary embodiment of the present invention will be described with reference to FIG. 2.
본 발명의 실시예는 엔진 회전수 검출센서(210), 차속 센서(220), 가속 페달 위치 검출센서(230), 엔진 제어부(ECU)(240), 연료 분사부(250)를 포함하여 구성한다.An embodiment of the present invention comprises an engine speed detection sensor 210, a vehicle speed sensor 220, an accelerator pedal position detection sensor 230, an engine control unit (ECU) 240, a fuel injection unit 250. .
엔진 제어부(240)는 엔진 회전수 검출센서(210)로부터 엔진 회전수를 입력받아 연료 분사부(250)를 통해 공급되는 연료를 조정하여 차속을 제어한다.The engine controller 240 receives the engine speed from the engine speed detection sensor 210 to control the vehicle speed by adjusting the fuel supplied through the fuel injection unit 250.
참고적으로, 도 3은 본 발명의 실시예에 따른 차량의 차속 제어방법을 도시한 흐름도이며, 도 4는 속도 제한 차속과 증가된 속도 제한 차속의 관계를 도시한 도면이다.For reference, FIG. 3 is a flowchart illustrating a vehicle speed control method of a vehicle according to an exemplary embodiment of the present invention, and FIG. 4 is a diagram illustrating a relationship between a speed limit vehicle speed and an increased speed limit vehicle speed.
도 5는 차량의 차속 제어과정을 도시한 타이밍도이며, 도 6은 본 발명의 실시예에 따른 차속과 유지시간의 관계를 도시한 도면이다.5 is a timing diagram illustrating a vehicle speed control process of a vehicle, and FIG. 6 is a diagram illustrating a relationship between a vehicle speed and a maintenance time according to an exemplary embodiment of the present invention.
도 3을 참조하면, 엔진 제어부(240)는 (S310)에서 소프트 스피드 리미트 (Soft Speed Limit) 제어조건을 판단한다.Referring to FIG. 3, the engine controller 240 determines a soft speed limit control condition at step S310.
여기서, 소프트 스피드 리미트 제어조건을 판단하는 단계는 차속 센서(220)를 통해 차속을 검출하는 단계와; 가속 페달 위치 검출센서(230)를 통해 가속 페달 답입 상태를 검출하는 단계와; 가속 페달이 답입되지 않은 상태에서 검출된 차속과설정 차속을 비교하는 단계와; 검출된 차속이 설정 차속을 초과한 상태로 지연시간 동안 유지되는 가의 여부를 검출하는 단계로 이루어진다.The determining of the soft speed limit control condition may include detecting a vehicle speed through the vehicle speed sensor 220; Detecting an accelerator pedal depression state through the accelerator pedal position detection sensor 230; Comparing the detected vehicle speed with the preset vehicle speed when the accelerator pedal is not depressed; And detecting whether the detected vehicle speed is maintained for a delay time in a state exceeding the set vehicle speed.
예를 들어, 엔진 제어부(240)는 검출된 차속이 설정 차속(속도 제한 차속 ; 103Kph)을 초과하고, 그 시간이 설정시간(2초) 이상 유지되며, 가속 페달이 답입되지 않은 상태(가속 페달 각도 = 0%)인 경우 소프트 스피드 리미트 제어 조건으로 판단한다.For example, the engine controller 240 detects the vehicle speed exceeding the set vehicle speed (speed limit vehicle speed; 103 Kph), and the time is maintained for more than the set time (2 seconds), and the accelerator pedal is not pressed (acceleration pedal). Angle = 0%), it is determined as a soft speed limit control condition.
전술한 (S310)에서 소프트 스피드 리미트 제어조건이면, 엔진 제어부(240)는 (S312, S314)으로 진행하여 소프트 스피드 리미트 제어동작 수행을 위한 조건을 판단한다.If the soft speed limit control condition in the above-described S310, the engine control unit 240 proceeds to (S312, S314) to determine the conditions for performing the soft speed limit control operation.
소프트 스피드 리미트 제어동작 수행을 위한 조건을 판단하는 단계는 소프트 스피드 리미트 제어조건인 상태에서 가속 페달 답입 상태를 검출하는 단계(S312)와; 검출된 가속 페달 답입량과 설정 답입량(95%)을 비교하는 단계(S314)로 이루어진다.The determining of the condition for performing the soft speed limit control operation may include: detecting an accelerator pedal depression state in a state of the soft speed limit control condition (S312); In step S314, the detected acceleration pedal depression amount and the set depression amount (95%) are compared.
이어서, 엔진 제어부(240)는 소프트 스피드 리미트 제어동작 수행 조건을 만족하면 (S316)으로 진행하여 설정시간 동안 소프트 스피드 리미트 제어동작을 수행한다.Subsequently, when the condition for performing the soft speed limit control operation is satisfied, the engine controller 240 proceeds to step S316 and performs the soft speed limit control operation for a set time.
여기서, 소프트 스피드 리미트 제어동작은 도로의 경사진 상태가 내리막길과 오르막길이 반복되는 구간에서 주행하는 차량이 도 4에 도시된 바와 같이 내리막길 끝부분에서 속도 제한 차속을 증가시켜 다음 오르막길 주행시 차속 유지 연비 향상을 위한 제어동작을 말한다.Here, the soft speed limit control operation is to increase the speed limit vehicle speed at the end of the downhill road to maintain the vehicle speed at the end of the downhill road as shown in FIG. Control operation for improving fuel economy.
즉, 소프트 스피드 리미트 제어동작은 설정시간 동안 검출된 차속을 설정된 속도 제한 차속으로 증대시키는 동작이며, 여기서, 설정시간은 도 6에 도시된 바와 같이 차속에 따라 다르게 설정된다.That is, the soft speed limit control operation is an operation of increasing the vehicle speed detected during the set time to the set speed limit vehicle speed, where the set time is set differently according to the vehicle speed as shown in FIG.
예를 들어, 엔진 제어부(240)는 소프트 스피드 리미트 제어동작 수행 조건을 만족하면 도 5에 도시된 바와 같이 속도 제한 차속을 103Kph에서 113Kph으로 증대시킨다.For example, the engine controller 240 increases the speed limit vehicle speed from 103 Kph to 113 Kph as shown in FIG. 5 when the condition for performing the soft speed limit control operation is satisfied.
엔진 제어부(240)는 차량의 오르막길 주행시 속도를 유지하기 위하여 임의적으로 속도 제한 차속을 증가하여 실제 차속 대비 차속 오차를 크게 함으로써 연료 분사부(250)를 통해 공급되는 연료량을 한시적으로 증가시킨다.The engine controller 240 temporarily increases the amount of fuel supplied through the fuel injection unit 250 by increasing the speed limit vehicle speed to increase the vehicle speed error relative to the actual vehicle speed in order to maintain the speed during the uphill driving of the vehicle.
이와 같이 본 발명의 실시예는 미리 설정된 속도 제한 차속을 초과하여 차속을 제어함으로써 내리막길과 오르막길이 반복되는 도로에서 효과적인 응답성을 기대할 수 있다.As described above, according to the embodiment of the present invention, by controlling the vehicle speed in excess of the preset speed limit vehicle speed, an effective response can be expected on the road where the downhill and uphill roads are repeated.
이때, 연료 분사부(250)를 통해 공급되는 연료량은 엔진 동력 및 제한 연료를 초과하지 못하도록 제어한다.At this time, the amount of fuel supplied through the fuel injection unit 250 is controlled so as not to exceed the engine power and the limit fuel.
그리고, (S318)으로 진행하여 차속에 따른 설정시간 경과 여부를 비교한다.Then, the process proceeds to S318 to compare whether or not the set time according to the vehicle speed has elapsed.
엔진 제어부(240)는 전술한 (S318)에서 차속에 따른 설정시간이 경과되면, (S320)으로 진행하여 소프트 리미트 제어동작을 해제하는 단계를 수행한다.When the setting time according to the vehicle speed has elapsed in the above-described S318, the engine controller 240 proceeds to S320 and performs a step of releasing the soft limit control operation.
즉, 엔진 제어부(240)는 소프트 스피드 리미트 유지시간 적용 후 속도제한 차속(103Kph)으로 복귀하는 제어동작을 수행한다.That is, the engine controller 240 performs a control operation to return to the speed limit vehicle speed 103 Kph after applying the soft speed limit holding time.
상술한 바와 같이 본 발명에 따른 차량의 차속 제어방법은 언덕길 주행 차속을 보다 안정적으로 유지할 수 있다.As described above, the vehicle speed control method of the vehicle according to the present invention may more stably maintain a hill road driving vehicle speed.
또한, 내리막길과 오르막길이 반복되는 차로에서 효과적인 응답성을 기대할 수 있으며, 차량의 연비를 향상시키고, 운전자의 불필요한 기어변속 조작을 감소시킬 수 있는 효과가 있다.In addition, an effective response can be expected in a lane where the downhill and the uphill are repeated, thereby improving the fuel efficiency of the vehicle and reducing the unnecessary gear shifting operation of the driver.
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JPH09100886A (en) * | 1995-10-05 | 1997-04-15 | Nissan Motor Co Ltd | Speed change control device for continuously variable transmission |
JPH09150646A (en) * | 1995-11-28 | 1997-06-10 | Nissan Motor Co Ltd | Automatic speed control device for vehicle |
KR20010009672A (en) * | 1999-07-13 | 2001-02-05 | 정몽규 | Method for controlling auto cruise system of vehicles |
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JPH09100886A (en) * | 1995-10-05 | 1997-04-15 | Nissan Motor Co Ltd | Speed change control device for continuously variable transmission |
JPH09150646A (en) * | 1995-11-28 | 1997-06-10 | Nissan Motor Co Ltd | Automatic speed control device for vehicle |
KR20010009672A (en) * | 1999-07-13 | 2001-02-05 | 정몽규 | Method for controlling auto cruise system of vehicles |
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