KR20040026349A - Smoke decreasing device of diesel automobile and method to decrease it - Google Patents

Smoke decreasing device of diesel automobile and method to decrease it Download PDF

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Publication number
KR20040026349A
KR20040026349A KR1020020057782A KR20020057782A KR20040026349A KR 20040026349 A KR20040026349 A KR 20040026349A KR 1020020057782 A KR1020020057782 A KR 1020020057782A KR 20020057782 A KR20020057782 A KR 20020057782A KR 20040026349 A KR20040026349 A KR 20040026349A
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engine
speed
acceleration
vehicle speed
idling
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KR1020020057782A
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Korean (ko)
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KR100501360B1 (en
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최낙룡
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현대자동차주식회사
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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
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration
    • 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
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501—Vehicle speed

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: A device and a method for reducing smoke caused by loadless sudden acceleration of compression ignition engine are provided to increase the idle speed(rpm) of an engine while reducing the fuel injection amount in the loadless state, thereby reducing the discharge of smoke when starting a car. CONSTITUTION: A device for reducing smoke caused by loadless sudden acceleration of compression ignition engine includes an engine rpm sensor(1), a vehicle speed sensor(2), a control part(3), an idle speed acceleration element(4), and a boost pressure blocking solenoid valve(5). The control part determines the sudden acceleration of idle speed according to an engine rpm sensed by the engine rpm sensor and the vehicle speed sensed by the vehicle speed sensor to generate a control signal. The idle speed acceleration element increases the idle speed(rpm) by the control signal output from the control part in the case of the sudden acceleration of the idle speed. The solenoid valve blocks a boost pressure transmitted to a boost compensator(6) according to the control signal output from the control part in the case of the sudden acceleration of the idle speed.

Description

압축착화엔진의 무부하 급가속 매연 저감장치 및 방법{SMOKE DECREASING DEVICE OF DIESEL AUTOMOBILE AND METHOD TO DECREASE IT}No-load rapid acceleration smoke reduction device and method of compression ignition engine {SMOKE DECREASING DEVICE OF DIESEL AUTOMOBILE AND METHOD TO DECREASE IT}

본 발명은 압축착화엔진의 무부하 급가속 매연 저감장치 및 방법에 관한 것으로, 보다 구체적으로는 시동 후 워엄 업(Warm Up)을 위한 무부하 급가속시 매연 배출량을 크게 줄일 수 있는 압축착화엔진의 무부하 급가속 매연 저감장치 및 방법에 관한 것이다.The present invention relates to an apparatus and a method for reducing the no-load sudden acceleration of a compression ignition engine, and more particularly, to a no-load acceleration of a compression ignition engine that can greatly reduce the emissions of the no-load rapid acceleration for warm-up after start-up. An apparatus and method for accelerated soot reduction are disclosed.

압축점화기관이라고도 불리우는 압축착화엔진은 실린더 내에 공기를 흡입 ·압축해서 고온 ·고압으로 하고 거기에 액체연료를 분사하여 자연발화시켜 피스톤을 작동시킴으로써 동력을 얻는 내연기관으로, 가솔린기관과 비교하여 볼 때 값이 싼 중유나 경유 등의 저질연료 사용이 가능하여 운전비가 저렴하고 특히 저속에서 동력성능이 좋기 때문에 대부분의 상용차에는 예컨대 디젤엔진과 같은 압축착화엔진이 탑재되고 있다.A compression ignition engine, also called a compression ignition engine, is an internal combustion engine that obtains power by injecting and compressing air into a cylinder to produce a high temperature and high pressure, spraying liquid fuel thereon, and igniting it to operate a piston. Since low-cost fuels such as inexpensive heavy oil and diesel oil can be used, the operation cost is low, and the power performance is particularly good at low speed. Most commercial vehicles are equipped with compression ignition engines such as diesel engines.

압축착화엔진은 저가의 연료를 사용하여 경제성 면에서 우수하긴 하지만 그 출력은 가솔린 엔진에 비해서 다소 떨어진다. 따라서, 압축착화엔진에는 통상 출력 증강을 위하여 배기가스의 압력을 이용하여 엔진 연소실에 외기를 강제로 밀어넣는 과급기(Turbo Charger)와, 그 과급기의 과급에 따라 연화되는 혼합기의 농도를 보상하기 위하여 과급으로 상승된 흡기압 즉 부스트압을 이용하여 공기량을 증가시키는 부스트 콤펜세이터(Boost Compensator)가 부가된다. 부스트 콤펜세이터는 이미 압축착화엔진 기술분야에서 널리 알려진 기술이므로 그에 대한 자세한 설명은 생략한다.Compression and ignition engines use low cost fuels and are economically superior, but their output is somewhat lower than that of gasoline engines. Therefore, the compression ignition engine usually has a turbocharger forcing the outside air into the engine combustion chamber by using the pressure of the exhaust gas to increase the power, and to compensate the concentration of the mixer that softens according to the supercharger of the supercharger. Boost compensator is added to increase the amount of air by using the increased intake pressure, that is, boost pressure. Since the boost compensator is already well known in the compression ignition engine technology, a detailed description thereof will be omitted.

한편, 압축착화엔진은 가솔린기관과 비교할 때 상대적으로 매연배출량이 많은데다 특히 강제점화식이 아닌 자연발화식이어서 시동초기 엔진가 일정 온도 이상이 될 때까지 무부하 상태에서 공회전시키는 워엄 업(Warm Up)이 필요하여 특히 엔진의 온도가 정상 가동온도 범위에 이르지 못한 시동 초기에 연료의 연소율이 낮아 많은 양의 매연을 배출한다. 그로 인해 압축착화엔진은 배출가스 규제의 주요한 대상이 되어 왔으며, 그 중에서도 시동초기 무부하 급가속시 배출하는 매연량에 대한 규제가 강화되고 있다.On the other hand, the compression ignition engine has a relatively large amount of soot emissions compared to gasoline engines. Especially, since it is a spontaneous ignition type rather than a forced ignition type, a warm up is required to idle at no load until the initial engine reaches a certain temperature. In particular, the combustion rate of the fuel is low at the initial stage of start-up when the engine temperature does not reach the normal operating temperature range, thereby releasing a large amount of soot. As a result, compression ignition engines have been the main target of emission gas regulation, and among them, regulations on the amount of soot emitted during no-load acceleration at the beginning of the start-up are tightened.

그러나, 종래 압축착화엔진의 경우 규제가 한증 강화되고 있는 무부하 급가속 매연 배출량을 줄일 수 있는 별도의 장치나 장치가 마련되어 있지 않기 때문에 이에 대한 대책이 절실히 요구되고 있다.However, in the case of conventional compression ignition engines, there is an urgent need for countermeasures because there is no separate device or device for reducing the no-load rapid acceleration flue gas emission regulations.

본 발명은 상술한 바와 같은 종래 압축착화엔진의 문제점을 해소하기 위하여 안출된 것으로서, 무부하 상태에서 엔진이 급가속되는 경우, 엔진의 공회전수를 높이고 연료분사량을 줄임으로써 시동초기 매연배출량을 크게 줄일 수 있는 압축착화엔진의 무부하 급가속 매연 저감장치 및 방법을 제공하는데 그 목적이 있다.The present invention has been made to solve the problems of the conventional compression ignition engine as described above, when the engine is rapidly accelerated in the no-load state, it is possible to greatly reduce the initial exhaust emissions by increasing the idle speed of the engine and reducing the fuel injection amount It is an object of the present invention to provide an apparatus and a method for reducing the no-load rapid acceleration smoke of a compression ignition engine.

도 1은 본 발명의 일 실시예에 따른 압축착화엔진의 무부하 급가속 매연 저감장치의 구성을 보여주는 블록도.1 is a block diagram showing the configuration of a no-load rapid acceleration soot reduction apparatus of a compression ignition engine according to an embodiment of the present invention.

도 2는 본 발명의 일 실시예에 따른 압축착화엔진의 무부하 급가속 매연 저감장치에 의한 매연 저감과정을 보여주는 순서도.2 is a flow chart showing a process for reducing soot by a no-load rapid acceleration soot reduction apparatus of a compression ignition engine according to an embodiment of the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1 : 엔진 회전수 감지센서2 : 차속 감지센서1: engine speed sensor 2: vehicle speed sensor

3 : 제어부4 : 공회전 가속수단3: controller 4: idle acceleration means

5 : 부스트압 차단 솔레노이드 밸브5: boost pressure shutoff solenoid valve

6 : 부스트 콤펜세이터6: boost compensator

본 발명에 따른 압축착화엔진의 무부하 급가속 매연 저감장치는, 엔진의 회전수를 감지하는 엔진 회전수 감지수단; 차속을 감지하는 차속 감지수단; 상기 엔진 회전수 감지수단이 감지한 엔진 회전수와 상기 차속 감지수단이 감지한 엔진 회전수와 차속에 의해 공회전 급가속을 판단하여 그에 따른 제어신호를 발하는 제어부; 공회전 급가속시 상기 제어부의 제어신호에 의해서 공회전수를 높이는 공회전 가속수단; 및 공회전 급가속시 상기 제어부의 제어신호에 의해서 급가속시 부스트 콤펜세이터에 전달되는 부스트압을 차단하는 부스트압 차단 솔레노이드 밸브;를 포함하여 이루어지는 것을 특징으로 한다.An apparatus for reducing a no-load sudden acceleration of a compression ignition engine according to the present invention includes: engine speed detection means for detecting a rotation speed of an engine; Vehicle speed detecting means for detecting a vehicle speed; A controller for determining an idling sudden acceleration based on the engine speed detected by the engine speed detection means, the engine speed detected by the vehicle speed detection means, and the vehicle speed to generate a control signal accordingly; Idling acceleration means for increasing idling speed by a control signal of the controller during idling acceleration; And a boost pressure blocking solenoid valve for cutting off the boost pressure transmitted to the boost compensator during rapid acceleration by the control signal of the controller during idling acceleration.

그리고, 본 발명에 따른 압축착화엔진의 무부하 급가속 매연 저감방법은, 차속을 감지하는 차속감지단계; 엔진의 회전수를 감지하는 엔진 회전수 감지단계; 및 상기 두 단계에서 감지된 차속과 엔진 회전수가 각각 2 Km/h 이하이고 4000 rpm 이상인 경우, 공회전 가속수단을 가동하여 공회전수를 높이고, 동시에 부스트압 차단 솔레노이드 밸브를 닫아 부스트압에 의해서 작동하는 부스트 콤펜세이터가 가동하지 못하게 하여 연료분사량을 감소시킴으로써, 공연비를 낮추어 연소율을 높이는 연소율 증진단계;를 포함하여 이루어지는 것을 특징으로 한다.In addition, the non-load rapid acceleration smoke reduction method of the compression ignition engine according to the present invention, the vehicle speed detecting step of detecting the vehicle speed; An engine speed detecting step of detecting a rotation speed of the engine; And when the vehicle speed and the engine speed detected in the above two steps are 2 Km / h or less and 4000 rpm or more, respectively, by operating the idling acceleration means to increase the idling speed and simultaneously closing the boost pressure blocking solenoid valve to operate by boost pressure. It is characterized in that it comprises a; combustion rate enhancement step of increasing the combustion rate by lowering the air-fuel ratio by preventing the operation of the data to reduce the fuel injection amount.

이하, 본 발명에 따른 압축착화엔진의 무부하 급가속 매연 저감장치 및 방법의 구성과 작용을 실시예를 보다 구체적으로 살펴본다.Hereinafter, the configuration and operation of the no-load rapid acceleration smoke reduction apparatus and method of the compression ignition engine according to the present invention will be described in more detail.

도 1은 본 발명의 일 실시예에 따른 압축착화엔진의 무부하 급가속 매연 저감장치의 구성을 보여주는 블록도이고, 도 2는 본 발명의 일 실시예에 따른 압축착화엔진의 무부하 급가속 매연 저감장치에 의한 매연 저감과정을 보여주는 순서도이다.1 is a block diagram showing the configuration of a no-load rapid acceleration soot reduction apparatus of a compression ignition engine according to an embodiment of the present invention, Figure 2 is a no-load rapid acceleration soot reduction apparatus of a compression ignition engine according to an embodiment of the present invention Is a flow chart showing the process of reducing soot.

도 1에 도시된 바와 같이, 본 발명의 일 실시예에 따른 압축착화엔진의 무부하 급가속 매연 저감장치는, 엔진의 회전수를 감지하는 엔진 회전수 감지수단인 엔진 회전수 감지센서(1), 차량의 속도를 감지하기 위한 차속감지수단인 차속 감지센서(2), 상기 엔진 회전수 감지센서(1)와 차속 감지센서(2)의 신호에 의해 제어신호를 발생하는 제어부(3), 상기 제어부(3)의 제어신호에 의해 작동하여 엔진의 공회전수를 높이는 공회전 가속수단(4), 그리고, 상기 제어부(3)의 제어신호에 의해 부스트 콤펜세이터(6)에 전달되는 부스트압을 차단하는 부스트압 차단 솔레노이드 밸브(5) 등으로 구성되어 있다.As shown in FIG. 1, the non-load rapid acceleration smoke reduction device of a compression ignition engine according to an embodiment of the present invention includes an engine speed detection sensor 1 which is an engine speed detection means for detecting an engine speed. The control unit (3) for generating a control signal by the vehicle speed detection sensor (2), the engine speed detection sensor (1) and the vehicle speed detection sensor (2), the vehicle speed detection means for detecting the speed of the vehicle, the control unit Boost pressure (4) to operate by the control signal of (3) to increase the idle speed of the engine, and to cut off the boost pressure transmitted to the boost compensator (6) by the control signal of the control unit (3) The shutoff solenoid valve 5 is constituted.

이상의 구성에 있어서, 제어부(3)는 상기 차속 감지센서(2)와 엔진 회전수 감지센서(1)의 신호에 의해 차속과 엔진 회전수를 산출하여 차속이 2km/h 이하이고 엔진 회전수가 정상 공회전수(약 750 rpm)에서 4000 rpm 이상으로 급가속된 경우 무부하 급가속으로 판정하고 그에 따른 제어신호를 발하게 구성된다.In the above configuration, the controller 3 calculates the vehicle speed and the engine speed by the signals of the vehicle speed sensor 2 and the engine speed sensor 1 so that the vehicle speed is 2 km / h or less and the engine speed is normal idle. In the case of sudden acceleration of more than 4000 rpm from a number (about 750 rpm), it is determined that no load is accelerated and the control signal is issued accordingly.

공회전 가속수단(4)은 예컨대 액츄에이터 등에 의해 흡기관에 설치된 흡기밸브의 개도율을 높여 엔진의 회전수를 높이도록 구성되는 바, 이는 엔진이 무부하 상태(차속이 2 km/h 이하)에서 엔진의 회전수가 약 4000 rpm 이상으로 급가속되는 경우 그것을 판단한 상기 제어부(3)의 제어신호에 의해 연소실에 유입되는 흡입공기량을 증대시켜 약 750 rpm으로 세팅된 엔진의 공회전수를 약 1000 rpm 수준으로 끌어올리도록 구성된다.The idling acceleration means 4 is configured to increase the number of revolutions of the engine by increasing the opening rate of the intake valve installed in the intake pipe, for example, by an actuator. This means that the engine is not loaded (vehicle speed is 2 km / h or less). If the rotation speed is accelerated to about 4000 rpm or more, the control signal of the controller 3 determines the amount of intake air flowing into the combustion chamber to raise the idle speed of the engine set at about 750 rpm to about 1000 rpm. It is configured to.

그리고, 부스트압 차단 솔레노이드 밸브(5)는, 과급기의 과급으로 인해 떨어지는 공연비를 보상하기 위하여 과급시 흡기압 상승에 따른 부스트압을 이용하여연료분사량을 증가시키도록 구성된 부스트 콤펜세이터(6)의 가동을 막기 위한 것으로, 이는 흡기관을 부스트 콤펜세이터(6)의 다이어프램(도시되지 않음)에 연결하여 흡기관의 과급압 즉 부스트압을 부스트 콤펜세이터(6)의 다이어프램에 전달하기 위한 부스트압 전달관(도시되지 않음) 상에 설치된다. 이에, 엔진이 무부하 급가속되는 경우 제어부(3)의 제어신호에 의해서 부스트압 전달관을 폐쇄하여 부스트압이 부스트 콤펜세이터(6)의 다이어프램에 전달되지 않게 함으로써, 부스트 콤펜세이터(6)가 작동하지 못하게 한다.In addition, the boost pressure shut-off solenoid valve 5 operates the boost compensator 6 configured to increase the fuel injection amount by using the boost pressure in accordance with the intake pressure increase during charging to compensate for the air-fuel ratio that falls due to the supercharging of the supercharger. The boost pressure transmission pipe for connecting the intake pipe to the diaphragm (not shown) of the boost compensator 6 to transfer the boost pressure of the intake pipe, that is, the boost pressure, to the diaphragm of the boost compensator 6 ( (Not shown). Accordingly, when the engine is rapidly unloaded, the boost compensator 6 operates by closing the boost pressure transmission pipe by the control signal of the controller 3 so that the boost pressure is not transmitted to the diaphragm of the boost compensator 6. Do not let it.

이상과 같은 구성으로 이루어짐에 따라, 본 발명의 일 실시예에 따른 압축착화엔진의 무부하 급가속 매연 저감장치는, 무부하 급가속시, 도 3의 순서도에 나타난 바와 같은 과정을 통하여 매연가스의 배출량이 감소되도록 작용한다.According to the configuration as described above, the no-load rapid acceleration soot reduction apparatus of the compression ignition engine according to an embodiment of the present invention, the discharge of the soot gas through the process as shown in the flow chart of FIG. Act to decrease.

먼저, 엔진이 시동되는 경우 차속 감지센서(2)와 엔진 회전수 감지센서(1)가 각각 차속과 엔진 회전수를 감지하여 제어부(3)에 보낸다.First, when the engine is started, the vehicle speed sensor 2 and the engine speed sensor 1 detect the vehicle speed and the engine speed, respectively, and send the same to the controller 3.

제어부(3)는 차속 감지센서(2)와 엔진 회전수 감지센서(1)의 신호에 의해 차속과 엔진 회전수를 검출하여 차속이 2 Km/h 이하이고 4000 rpm 이상이라면 엔진이 무부하 급가속되는 것으로 판정하고 그에 따른 제어신호를 공회전 가속수단(4)과 부스트 콤펜세이터(6)의 부트압 차단 솔레노이드 밸브(5)에 보낸다.The controller 3 detects the vehicle speed and the engine speed by the signals of the vehicle speed sensor 2 and the engine speed sensor 1 so that the engine is rapidly accelerated when the vehicle speed is 2 Km / h or less and 4000 rpm or more. The control signal is sent to the boot pressure shut-off solenoid valve 5 of the idle acceleration means 4 and the boost compensator 6.

이어, 공회전 가속수단(4)이 제어부(3)의 제어신호에 의해 공회전 가속수단(4)은 예컨대 연소실에 흡입되는 혼합기의 양을 증가시키는 등의 방법에 의해 엔진의 공회전수를 높이고, 부스트압 차단 솔레노이드는 부스트압 전달관을폐쇄, 부스트압이 부스트 콤펜세이터(6)의 다이어프램에 전달되지 않게 함으로써 부스트 콤펜세이터(6)가 작동하지 않게 하여 연소실에 분사되는 연료의 분사량을 저감하여 결과적으로 공연비를 낮춘다.Subsequently, the idling acceleration means 4 increases the idling speed of the engine by, for example, increasing the amount of the mixer sucked into the combustion chamber by the control signal of the controller 3, and cuts off the boost pressure. The solenoid closes the boost pressure delivery tube and prevents the boost pressure from being transmitted to the diaphragm of the boost compensator 6, thereby preventing the boost compensator 6 from operating, thereby reducing the injection amount of fuel injected into the combustion chamber, resulting in an air-fuel ratio. Lower.

이에, 압축착화엔진이 시동초기 무부하상태에서 급가속된 후 다시 정상상태로 돌아와 공회전하는 경우, 공회전수는 약 1000rpm 정도로 높아진 반면 연료분사량이 적어짐으로써, 연료의 연소율이 높아져 매연 배출량이 크게 줄어들게 된다.Accordingly, when the compression ignition engine is rapidly accelerated at the initial no-load state and then returns to the normal state, the idling speed is increased to about 1000 rpm, while the fuel injection amount is reduced, so that the combustion rate of the fuel is increased and the smoke emissions are greatly reduced.

빛 투과율로 산출되는 매연농도를 측정한 결과에 따르면, 종래 디젤c엔진의 경우에는 매연농도가 20 % 정도인데 반해, 본 발명에 따른 무부하 급가속 매연 저감장치의 공회전 가속수단(4)만 채용된 압축착화엔진의 매연농도는 약 17 % 정도로 매연 배출량이 약간 감소된 것으로 나타났으며, 부스트압 차단 솔레노이드 밸브(5)를 단독 채용한 압축착화엔진의 경우에는 약 15% 정도로 감소되는 것으로 나타났다. 그리고, 공회전 가속수단(4)과 부스트압 차단 솔레노이드 밸브(5)가 동시 적용된 압축착화엔진의 경우에는 배출가스의 매연농도가 약 12 %로서 매연 배출량이 크게 저감되는 것으로 나타났다.According to the result of measuring the soot concentration calculated by the light transmittance, the soot concentration is about 20% in the case of the conventional diesel c engine, whereas only the idling acceleration means 4 of the no-load rapid acceleration soot reduction device according to the present invention is employed. The soot concentration of the compression ignition engine was slightly reduced to about 17%, and the compression ignition engine using the boost pressure shut-off solenoid valve 5 alone was reduced to about 15%. In addition, in the case of the compression ignition engine to which the idling acceleration means 4 and the boost pressure shut-off solenoid valve 5 are simultaneously applied, the soot concentration of the exhaust gas was about 12%, and the soot emission was greatly reduced.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 압축착화엔진의 무부하 급가속 매연 저감장치 및 방법에 따르면, 시동초기 무부하 상태에서 엔진이 급가속되었다가 정상상태로 돌아와 공회전 하게 되는 경우, 엔진이 공회전수가 증가한 상태에서 연료분사량이 줄어들게 되어 연료의 연소율을 크게 높일 수 있다. 따라서,압축착화엔진의 시동초기 연료 미연소로 인한 매연 배출량을 크게 줄일 수 있다.As described above in detail, according to the apparatus and method for reducing the no-load rapid acceleration smoke of the compression ignition engine according to the present invention, when the engine is rapidly accelerated in the initial no-load state and returns to the normal state, the engine is idle In the increased state, the fuel injection amount is reduced, which can greatly increase the combustion rate of the fuel. Therefore, it is possible to greatly reduce the amount of soot emitted from the unburned initial fuel of the compression ignition engine.

Claims (2)

엔진의 회전수를 감지하는 엔진 회전수 감지수단;Engine speed detection means for detecting the speed of the engine; 차속을 감지하는 차속 감지수단;Vehicle speed detecting means for detecting a vehicle speed; 상기 엔진 회전수 감지수단이 감지한 엔진 회전수와 상기 차속 감지수단이 감지한 엔진 회전수와 차속에 의해 공회전 급가속을 판단하여 그에 따른 제어신호를 발하는 제어부;A controller for determining an idling sudden acceleration based on the engine speed detected by the engine speed detection means, the engine speed detected by the vehicle speed detection means, and the vehicle speed to generate a control signal accordingly; 공회전 급가속시 상기 제어부의 제어신호에 의해서 공회전수를 높이는 공회전 가속수단; 및Idling acceleration means for increasing idling speed by a control signal of the controller during idling acceleration; And 공회전 급가속시 상기 제어부의 제어신호에 의해서 급가속시 부스트 콤펜세이터에 전달되는 부스트압을 차단하는 부스트압 차단 솔레노이드 밸브;A boost pressure shut-off solenoid valve which blocks a boost pressure transmitted to a boost compensator during rapid acceleration by a control signal of the controller during idling sudden acceleration; 를 포함하여 이루어지는 것을 특징으로 하는 압축착화엔진의 무부하 급가속 매연 저감장치.No-load rapid acceleration smoke reduction device of the compression ignition engine, characterized in that comprises a. 차속을 감지하는 차속감지단계;A vehicle speed detecting step of detecting a vehicle speed; 엔진의 회전수를 감지하는 엔진 회전수 감지단계; 및An engine speed detecting step of detecting a rotation speed of the engine; And 상기 두 단계에서 감지된 차속과 엔진 회전수가 각각 2 Km/h 이하이고 4000 rpm 이상인 경우, 공회전 가속수단을 가동하여 공회전수를 높이고, 동시에 부스트압 차단 솔레노이드 밸브를 닫아 부스트압에 의해서 작동하는 부스트 콤펜세이터가가동하지 못하게 하여 연료분사량을 감소시킴으로써, 공연비를 낮추어 연소율을 높이는 연소율 증진단계;When the vehicle speed and the engine speed detected in the above two stages are each 2 Km / h or less and 4000 rpm or more, the boost compensator operates by boost pressure by operating the idling acceleration means to increase the idling speed and closing the boost pressure blocking solenoid valve at the same time. A combustion rate enhancement step of reducing the fuel injection amount to prevent operation and thereby lowering the air-fuel ratio to increase the combustion rate; 를 포함하여 이루어지는 것을 특징으로 하는 압축착화엔진의 무부하 급가속 매연 저감방법.No-load rapid acceleration soot reduction method of the compression ignition engine comprising a.
KR10-2002-0057782A 2002-09-24 2002-09-24 Smoke decreasing device of diesel automobile and method to decrease it KR100501360B1 (en)

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KR20220046788A (en) 2020-10-08 2022-04-15 최동선 Golf Goods Storage Case

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JPS61167127A (en) * 1986-01-29 1986-07-28 Honda Motor Co Ltd Supercharging pressure control device
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CN111734543A (en) * 2020-06-23 2020-10-02 中国第一汽车股份有限公司 Engine fuel injection quantity control method, device and equipment and vehicle
KR20220046788A (en) 2020-10-08 2022-04-15 최동선 Golf Goods Storage Case

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