KR20030038899A - A device and the method for improve the amount of fuel consumed controlling of diesel engine - Google Patents
A device and the method for improve the amount of fuel consumed controlling of diesel engine Download PDFInfo
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- KR20030038899A KR20030038899A KR1020010069096A KR20010069096A KR20030038899A KR 20030038899 A KR20030038899 A KR 20030038899A KR 1020010069096 A KR1020010069096 A KR 1020010069096A KR 20010069096 A KR20010069096 A KR 20010069096A KR 20030038899 A KR20030038899 A KR 20030038899A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3827—Common rail control systems for diesel engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0625—Fuel consumption, e.g. measured in fuel liters per 100 kms or miles per gallon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
본 발명은 디젤 엔진에 관한 것으로써, 더욱 상세하게는 디젤 엔진 차량의 적재상태에 따라 연료 분사량을 조절하여 엔진의 출력을 조절할 수 있는 디젤 차량의 연비 향상 제어 장치 및 그 방법에 관한 것이다.The present invention relates to a diesel engine, and more particularly, to an apparatus and method for improving fuel efficiency of a diesel vehicle capable of adjusting an output of an engine by adjusting a fuel injection amount according to a loading state of a diesel engine vehicle.
일반적으로 디젤엔진은 높은 압축비임과 동시에 큰 공기 과잉률하에서 연료를 연소시키기 때문에 이론 열효율은 가솔린 엔진보다 훨씬 좋고 연료 경제성이 뛰어나다.In general, diesel engines burn fuel at high compression ratios and at high air excess rates, so the theoretical thermal efficiency is much better than gasoline engines and fuel economy is better.
따라서, 상기한 디젤 엔진은 힘을 요하는 트럭 및 버스 등 주로 상용 차량에 적용되고 있다.Therefore, the diesel engine is mainly applied to commercial vehicles such as trucks and buses that require power.
그러나, 상기한 종래와 같은 상용 차량에서 짐 적재상태 및 승객 탑승 상태에 관계없이 기 설정된 연료 분사량에 따라 연료를 분사하여 줌으로써, 짐의 적재가 없거나 승객 탑승이 없는 공차의 경우 과도한 여유 구동력으로 인한 불필요한 연료 소모가 발생하는 문제점을 내포하고 있다.However, in the commercial vehicle as described above, by injecting fuel according to a preset fuel injection amount irrespective of the load loading state and the passenger boarding state, in the case of a tolerance without load or no passenger boarding, it is unnecessary due to excessive slack driving force. The problem is that fuel consumption occurs.
따라서, 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로, 상용차량의 적재상태 및 승객 탑승 상태에 따른 운전자의 선택 스위치 조작상태에 따라 연료 분사량 각각 다르게 제어할 수 있는 디젤 엔진의 연비 향상 제어 장치 및 그 방법을 제공하기 위한 것이다.Accordingly, an object of the present invention is to solve the above problems, the fuel efficiency improvement control device of a diesel engine that can control the fuel injection amount differently according to the driver's selection switch operation state according to the loading state and the passenger boarding state of the commercial vehicle And a method thereof.
상기한 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,
차량의 동작상태에 따라 가변 출력되는 차량 동작상태를 검출하는 차량 동작상태 검출 수단과;Vehicle operating state detection means for detecting a vehicle operating state that is variably output according to the operating state of the vehicle;
상기 차량 동작상태 검출 수단에서 검출된 신호를 입력받고자 소정의 제어신호를 상기 차량 동작상태 검출수단에 출력하고, 상기 제어신호에 따라 동기되어 검출된 적재상태 선택 스위치, 차속, 가속페달 개도 및 엔진 회전수 등을 입력받아 연료 분사량 설정 조건에 따른 메모리 맵에 설정된 연료 분사량을 설정하고, 운전자의 적재상태 선택 스위치 조작 상태를 판단하여 연료 분사량을 재 조정하여 설정한 다음, 해당하는 연료 분사량 제어신호를 출력하는 엔진 제어 수단과;A predetermined control signal is outputted to the vehicle operating state detecting means to receive the signal detected by the vehicle operating state detecting means, and a loading state selection switch, vehicle speed, accelerator pedal opening degree and engine rotation are detected in synchronization with the control signal. Set the fuel injection quantity set in the memory map according to the fuel injection quantity setting condition by inputting the number, etc., determine the operation state of the loading state selection switch of the driver, readjust the fuel injection quantity and set it, and then output the corresponding fuel injection quantity control signal. Engine control means;
상기 엔진 제어 수단에서 출력되는 소정의 연료 분사량 제어신호에 의해 동기 되어 연료 분사량을 조절 분사함으로써, 엔진의 출력을 조절시키는 구동수단으로 구비되어 이루어지는 것을 특징으로 한다.It is characterized in that it is provided as a drive means for adjusting the output of the engine by adjusting the fuel injection amount in synchronization with the predetermined fuel injection amount control signal output from the engine control means.
상기한 목적을 달성하기 위한 다른 본 발명은,Another invention for achieving the above object,
차량이 시동 온 되면, 연료 분사량 설정 조건에 따른 메모리 맵에 설정된 연료 분사량을 설정하는 단계와;Setting a fuel injection amount set in a memory map according to a fuel injection amount setting condition when the vehicle is started on;
상기 단계에서 연료 분사량이 설정됨에 따라 운전자의 적재상태 선택 스위치 조작상태를 판단하여 연료 분사량을 재 조정하여 설정하고, 해당하는 연료 분사량 제어신호를 출력하는 단계로 이루어지는 것을 특징으로 한다.As the fuel injection amount is set in the step, it is determined that the loading state selection switch operation state of the driver is adjusted, the fuel injection amount is set again, and the corresponding fuel injection amount control signal is output.
도 1은 본 발명에 적용되는 디젤 엔진의 연비향상 제어 장치 구성 블록도 이고,1 is a block diagram of the configuration of a fuel efficiency improvement control apparatus for a diesel engine according to the present invention;
도 2는 본 발명에 적용되는 디젤 엔진의 연비향상 제어 방법 동작 순서도 이다.2 is a flowchart illustrating a method for controlling fuel efficiency of a diesel engine applied to the present invention.
< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>
100 : 차량 동작상태 검출수단 110 : 적재상태 선택스위치 검출부100: vehicle operation state detection means 110: loading state selection switch detection unit
120 : 차속 검출부 130 : 가속페달 위치 검출부120: vehicle speed detection unit 130: accelerator pedal position detection unit
140 : 엔진 회전수 검출부 200 : 엔진 제어 수단140: engine speed detection unit 200: engine control means
300 : 구동수단300: driving means
이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 디젤 차량의 연비 향상 제어 장치 구성 블록도로서, 차량 동작상태 검출장치(100)는 차량의 동작상태에 따라 가변 출력되는 차량 동작상태를 검출한다.1 is a block diagram illustrating a configuration of an apparatus for improving fuel efficiency of a diesel vehicle according to the present invention, and the vehicle operating state detecting apparatus 100 detects a vehicle operating state that is variably output according to the operating state of the vehicle.
엔진 제어 장치(200)는 상기 차량 동작상태 검출장치(100)에서 검출된 신호를 입력받고자 소정의 제어신호를 상기 차량 동작상태 검출수단에 출력하고, 상기제어신호에 따라 동기되어 검출된 적재상태 선택 스위치, 차속, 가속페달 개도 및 엔진 회전수 등을 입력받아 연료 분사량 설정 조건에 따른 메모리 맵에 설정된 연료 분사량을 설정하고, 운전자의 적재상태 선택 스위치 조작 상태를 판단하여 연료 분사량을 재 조정하여 설정한 다음, 해당하는 연료 분사량 제어신호를 출력한다.The engine control apparatus 200 outputs a predetermined control signal to the vehicle operating state detecting unit to receive a signal detected by the vehicle operating state detecting apparatus 100, and selects a loaded state detected in synchronization with the control signal. The fuel injection amount set in the memory map according to the fuel injection amount setting condition is input by inputting a switch, vehicle speed, accelerator pedal opening degree, and engine speed, and the fuel injection amount is readjusted by judging the operation state of the loading state selection switch of the driver. Next, a corresponding fuel injection amount control signal is output.
구동장치(300)는 상기 엔진 제어장치(200)에서 출력되는 소정의 연료 분사량 제어신호에 의해 동기 되어 연료 분사량을 조절 분사함으로써, 엔진의 출력을 조절시킨다.The driving device 300 adjusts and outputs the fuel injection amount in synchronization with a predetermined fuel injection amount control signal output from the engine control device 200, thereby adjusting the output of the engine.
상기에서 차량 동작상태 검출장치(100)는 다수 단으로 이루어져 있어서, 운전자의 적재 상태 및 승객 탑승 상태 판단에 따라 조작되는 적재 상태 선택 스위치 상태를 검출하는 적재 상태 선택 스위치 검출부(110)와;The vehicle operation state detecting apparatus 100 includes a load state selection switch detection unit 110 configured to detect a load state selection switch state which is operated according to the determination of the load state and the passenger boarding state of the driver.
차량의 동작상태 변화에 따라 가변되는 차속의 변화를 검출하는 차속 검출부(120)와;A vehicle speed detection unit 120 for detecting a change in vehicle speed that varies according to a change in an operation state of the vehicle;
운전자의 가속페달 조작상태에 따라 가변되는 가속페달 개도를 검출하는 가속페달 개도 검출부(130)와;An accelerator pedal opening degree detector 130 configured to detect an accelerator pedal opening degree that varies according to a driver's accelerator pedal operation state;
차량의 동작상태에 따라 가변되는 엔진 회전수를 검출하는 엔진 회전수 검출부(140)로 구비되어 있다.The engine speed detector 140 detects an engine speed that varies according to an operation state of the vehicle.
상기한 구성으로 이루어진 디젤 차량의 연비 향상 제어 방법을 첨부한 도 2를 참조하여 설명한다.The fuel efficiency improvement control method for the diesel vehicle having the above-described configuration will be described with reference to FIG. 2.
차량에 전원이 인가되어 엔진이 시동 온 되면, 엔진 제어장치(200)는 사용되는 모든 변수를 초기화시키며, 차량 동작상태 검출장치(100)는 차량의 동작상태 변화 및 운전자의 스위치 조작상태에 따라 가변되는 적재상태 선택 스위치, 차속, 가속페달 개도 및 엔진 회전수를 검출한다.When power is applied to the vehicle and the engine is turned on, the engine control apparatus 200 initializes all variables used, and the vehicle operation state detection apparatus 100 is variable according to the change in the operation state of the vehicle and the switch operation state of the driver. Detects the loaded load selection switch, vehicle speed, accelerator pedal opening and engine speed.
이어서, 엔진 제어장치(200)는 소정의 제어신호를 상기 차량 동작상태 검출 장치(100)로 출력하고, 차량 동작상태 검출 장치(100)는 상기 엔진 제어 장치(200)에서 출력된 소정의 제어신호에 의해 동기 되어 검출된 적재상태 선택 스위치, 차속, 가속페달 개도 및 엔진 회전수 등을 출력한다.Subsequently, the engine control apparatus 200 outputs a predetermined control signal to the vehicle operating state detecting apparatus 100, and the vehicle operating state detecting apparatus 100 outputs a predetermined control signal output from the engine control apparatus 200. And outputs the load state selection switch, vehicle speed, accelerator pedal opening degree and engine speed detected in synchronization with each other.
엔진 제어 장치(200)는 상기 차량 주행상태 검출장치(100)로부터 출력되는 적재상태 선택 스위치, 차속, 가속페달 개도 및 엔진 회전수 등을 입력받아, 연료 분사량 설정 조건에 따른 메모리 맵에 설정된 연료 분사량(MFL:MAX FUEL LIMIT)을 설정한다(S100,S110).The engine control apparatus 200 receives a load state selection switch, a vehicle speed, an accelerator pedal opening degree, an engine speed, and the like output from the vehicle driving state detection apparatus 100, and sets the fuel injection amount set in a memory map according to a fuel injection amount setting condition. (MFL: MAX FUEL LIMIT) is set (S100, S110).
상기에서 연료 분사량 설정 조건은, 엔진 회전수가 소정의 제1 설정 기준 값 이상으로, 차속, 엔진 회전수, 가속페달 개도 등에 따라 메모리 맵에 설정된 연료 분사량 설정 맵에서 연료 분사량(MFL)을 설정한다.In the fuel injection amount setting condition, the fuel injection amount MFL is set in the fuel injection amount setting map set in the memory map according to the vehicle speed, the engine speed, the accelerator pedal opening degree, and the like, when the engine speed is equal to or greater than the first predetermined reference value.
단, 상기에서 연료 분사량은 해당 차량의 엔진 출력 토크 별로 각각 메모리 맵에 최대 엔진 출력 토크에 해당하는 연료 분사량(MFL)으로 설정되어 있다.However, the fuel injection amount is set to the fuel injection amount MFL corresponding to the maximum engine output torque in the memory map for each engine output torque of the vehicle.
상기에서, 연료 분사량(MFL)이 설정되면, 엔진 제어 장치(200)는 운전자의 적재 상태 또는 승객 탑승 상태에 따라 판단되어 조작되는 다수 단(예: 오프, 1단, 2단)으로 이루어진 적재상태 선택 스위치의 상태를 판단한다(S120).In the above, when the fuel injection amount (MFL) is set, the engine control device 200 is a loading state consisting of a plurality of stages (eg, off, 1 stage, 2 stages) that is determined and operated according to the loading state or the passenger boarding state of the driver. The state of the selection switch is determined (S120).
상기에서, 적재상태 선택 스위치의 상태가 1단에 위치됨이 판단되면, 엔진 제어 장치(200)는 화물의 적재상태 또는 승객 탑승상태가 차량 최대기준 적재량의1/2상태라고 판단하고, 엔진 최대 출력 토크에 해당하는 연료 분사량(MFL)에서 화물 적재 상태 또는 승객 탑승상태가 엔진 출력을 저감시키기 위한 소정의 제1 설정 값(예:0.05, 즉 5%)을 연산하여 실 연료 분사량을 산출한 후, 상기 산출된 실 연료 분사량에 해당하는 소정의 연료 분사량 제어신호를 출력한다(S130,S150).In the above, when it is determined that the state of the load state selection switch is located in the first stage, the engine control apparatus 200 determines that the load state of the cargo or the passenger boarding state is 1/2 of the vehicle maximum reference load, and the engine maximum In the fuel injection amount MFL corresponding to the output torque, the cargo loading state or the passenger riding state calculates a predetermined first set value (for example, 0.05 or 5%) for reducing the engine power, and then calculates the actual fuel injection amount. In operation S130 and S150, a predetermined fuel injection amount control signal corresponding to the calculated actual fuel injection amount is output.
MFL = MFL ×0.05MFL = MFL × 0.05
상기에서 출력되는 실 연료 분사량 제어신호는 엔진 최대 출력 토크에 해당하는 연료 분사량(MFL)에서 약 5% 정도 저감된 연료 분사량이 실 연료 분사량으로 출력된다.The actual fuel injection amount control signal output from the above outputs the fuel injection amount reduced by about 5% from the fuel injection amount MFL corresponding to the engine maximum output torque as the actual fuel injection amount.
상기(S120)에서 적재상태 선택 스위치의 상태가 2단에 위치됨이 판단되면, 엔진 제어 장치(200)는 화물의 적재상태 또는 승객 탑승상태가 없는 공차 상태임을 판단하고, 엔진 최대 출력 토크에 해당하는 연료 분사량(MFL)에서 화물 적재 상태 또는 승객 탑승상태가 엔진 출력을 저감시키기 위한 소정의 제2 설정 값(예:0.1 즉 10%)을 연산하여 실 연료 분사량을 산출한 후, 상기 산출된 실 연료 분사량에 해당하는 소정의 연료 분사량 제어신호를 출력한다(S140,S150).When it is determined in step S120 that the state of the load selection switch is located in the second stage, the engine control apparatus 200 determines that the load state of the cargo or the passenger state without the passenger boarding state corresponds to the maximum output torque of the engine. After calculating the actual fuel injection amount by calculating a predetermined second set value (e.g., 0.1 or 10%) for reducing the engine output, the cargo loading state or the passenger boarding state in the fuel injection amount (MFL) A predetermined fuel injection amount control signal corresponding to the fuel injection amount is output (S140, S150).
MFL = MFL × 0.1MFL = MFL × 0.1
상기에서 출력되는 실 연료 분사량 제어신호는 엔진 최대 출력 토크에 해당하는 연료 분사량에서 약 10% 정도 저감된 연료 분사량이 실 연료 분사량으로 출력된다.The actual fuel injection amount control signal output from the above outputs the fuel injection amount reduced by about 10% from the fuel injection amount corresponding to the engine maximum output torque as the actual fuel injection amount.
그러나, 상기(S120)에서 적재상태 선택 스위치의 상태가 '오프'단에 위치됨이 판단되면, 엔진 제어 장치(200)는 화물의 적재상태 또는 승객 탑승상태가 차량최대기준 적재량의 만차 상태라고 판단하고, 상기 연료 분사량 설정 조건에 따라 설정된 엔진 최대 출력 토크에 해당하는 연료 분사량(MFL)을 실 연료 분사량으로 하여 해당 연료 분사량 제어신호를 출력한다(S150).However, when it is determined in step S120 that the state of the load selection switch is located at the 'off' end, the engine control apparatus 200 determines that the load state or the passenger boarding state of the cargo is the full state of the vehicle maximum reference load. The fuel injection amount control signal is output by using the fuel injection amount MFL corresponding to the engine maximum output torque set according to the fuel injection amount setting condition as the actual fuel injection amount (S150).
이로써, 화물 적재 상태 또는 승객 탑승 상태에 따라 운전자에 의해 선택되어지는 적재상태 선택 스위치의 상태에 따라 각각 연료 분사량을 다르게 제어함으로써, 연비를 향상시킬 수 있고, 매연 발생을 저감할 수 있으며 상품성 증대를 꾀할 수 있다.As a result, the fuel injection amount is controlled differently according to the state of the loading state selection switch selected by the driver according to the cargo loading state or the passenger boarding state, thereby improving fuel economy, reducing the generation of soot, and increasing the merchandise. You can do it.
이상 설명한 바와 같이 본 발명은 상용차량의 적재상태 및 승객 탑승 상태에 따른 운전자의 선택 스위치 조작상태에 따라 연료 분사량 각각 다르게 제어함으로써, 연비를 향상시킬 수 있고, 매연 발생을 저감할 수 있으며 상품성 증대를 꾀할 수 있다.As described above, according to the present invention, the fuel injection amount is controlled differently according to the driver's selection switch operation state according to the loading state and the passenger boarding state of the commercial vehicle, thereby improving fuel economy, reducing the generation of soot, and increasing the merchandise. You can do it.
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WO2012031224A3 (en) * | 2010-09-03 | 2012-07-05 | Paccar Inc | Speed control management systems and methods |
US10371077B2 (en) | 2017-08-04 | 2019-08-06 | Paccar Inc | Systems and methods to regulate dynamic settings for engine speed control management |
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KR100202765B1 (en) * | 1996-04-17 | 1999-06-15 | 양재신 | Engine controll device of automobile |
JP3682811B2 (en) * | 1996-10-22 | 2005-08-17 | 日野自動車株式会社 | Control device for vehicle engine |
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US8406971B2 (en) | 2010-09-03 | 2013-03-26 | Paccar Inc. | Speed control management systems and methods |
US10371077B2 (en) | 2017-08-04 | 2019-08-06 | Paccar Inc | Systems and methods to regulate dynamic settings for engine speed control management |
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