KR100274024B1 - Apparatus for advancing acceleration efficiency of diesel engine - Google Patents

Apparatus for advancing acceleration efficiency of diesel engine Download PDF

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KR100274024B1
KR100274024B1 KR1019970031923A KR19970031923A KR100274024B1 KR 100274024 B1 KR100274024 B1 KR 100274024B1 KR 1019970031923 A KR1019970031923 A KR 1019970031923A KR 19970031923 A KR19970031923 A KR 19970031923A KR 100274024 B1 KR100274024 B1 KR 100274024B1
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air
air tank
valve
exhaust
pipe
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KR1019970031923A
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Korean (ko)
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KR19990009503A (en
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홍순만
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정몽규
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
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • F02D9/06—Exhaust brakes
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0065—Specific aspects of external EGR control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: An acceleration performance improving device for a diesel engine is provided to supply stored compression air to a combustion chamber in case of acceleration for immediately supplying a sufficient amount of air to the fuel in the combustion chamber, thereby improving the response of the engine acceleration. CONSTITUTION: An acceleration performance improving device for a diesel engine includes a bypass tube(5) for connecting an exhaust tube(3) between an exhaust valve(1) and an exhaust brake valve(2) with an intake tube(4), an air tank(6) provided to the bypass tube and filled with compression air, a check valve(7) mounted to the bypass tube between the air tank and the exhaust tube for passing the air only in the direction of the air tank, an acceleration pedal angle sensor(9) mounted to the bypass tube between the air tank and the intake tube for communicating the air tank to the intake tube in case of acceleration pedal manipulation of a driver to sense the manipulation state of the acceleration pedal, an electronic control unit(ECU;10) for receiving signals output from the acceleration pedal angle sensor, a rotation actuator(11) for rotating by the ECU, and a valve element formed of a rotary valve(12) for controlling the communication state of the bypass tube by the rotation actuator.

Description

디젤 엔진의 가속성능 향상장치Acceleration performance improving device of diesel engine

본 발명은 디젤 엔진의 작동을 조절하는 장치에 관한 것으로서, 보다 상세하게는 배기 브레이크를 사용하고 있는 디젤 엔진에서 감속후 가속조작시 보다 빠른 가속성능을 발휘할 수 있도록 한 디젤 엔진의 가속성능 향상장치에 관한 것이다.The present invention relates to an apparatus for regulating the operation of a diesel engine, and more particularly, to an acceleration performance improving apparatus for a diesel engine, which is capable of exhibiting faster acceleration performance during acceleration operation after deceleration in a diesel engine using an exhaust brake. It is about.

일반적으로 디젤엔진은 실린더 내에 공기를 흡입 압축하여 500~550℃의 압축열을 발생시킨 상태에서 인젝터 노즐을 사용하여 연료를 분사하여 자연 착화 연소시키는 엔진이다.In general, a diesel engine is an engine that spontaneously combusts combustion by injecting fuel using an injector nozzle while generating compressed heat of 500 to 550 ° C. by inhaling and compressing air into a cylinder.

상기와 같은 디젤엔진은 그 가감속의 조작이 상기한 인젝터 노즐에서 분사되는 연료의 양으로 조절되는 바, 이는 상기 인젝터 노즐에 연료를 압축하여 공급하는 인젝션 펌프에 의해 이루어진다.In the diesel engine as described above, the operation of the acceleration and deceleration is controlled by the amount of fuel injected from the injector nozzle, which is performed by an injection pump that compresses and supplies fuel to the injector nozzle.

물론, 상기와 같이 인젝터 노즐로 제공되는 연료의 연소에 필요한 적당한 공기의 공급이 항상 원활하게 이루어져야한다.Of course, the supply of adequate air for combustion of the fuel provided to the injector nozzle as described above should always be made smoothly.

그런데, 상기와 같이 연료의 연소에 필요한 공기의 흡입작용은 일반적인 경우 실린더 내에서 상하로 왕복 운동하는 피스톤이 흡기행정에서 하강하면서 발생시키는 부압에 의해 공기가 흡기밸브를 통해 연소실로 유입되도록 하는 것이므로 운전자의 급 가속조작에 따른 연료의 급격한 증가는 즉각적으로 이루어지는 반면, 상기와 같이 급격히 증가되는 연료를 연소시키기에 충분한 공기의 확보는 쉽게 이루어지지 않고 약간의 지연시간을 갖게 되어 가속조각에 대한 응답이 즉각적이지 못한 문제점이 있다.However, as described above, the suction action of the air required for combustion of the fuel is such that the air is introduced into the combustion chamber through the intake valve by the negative pressure generated when the piston reciprocating up and down in the cylinder is lowered in the intake stroke. The rapid increase of fuel due to rapid acceleration operation is instantaneous, while it is not easy to secure enough air to combust the rapidly increasing fuel as described above, and there is a slight delay time, so the response to the accelerated fragment is immediate. There is a problem.

따라서, 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 배기 브레이크 장치를 갖춘 디젤 엔진의 작동중 감속이 있은 후 다시 가속조작을 하는 경우에 있어서의 가속 응답성을 향상시킬 수 있도록 한 디젤 엔진의 가속성능 향상장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, so that the acceleration response in the case of performing the acceleration operation again after the deceleration during operation of the diesel engine with the exhaust brake device is improved. The purpose is to provide an acceleration performance improving device for diesel engines.

제1도는 본 발명에 따른 디젤 엔진의 가속성능 향상장치의 구성도이다.1 is a configuration diagram of an acceleration performance improving apparatus for a diesel engine according to the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1 : 배기 밸브 2 : 배기 브레이크 밸브1: exhaust valve 2: exhaust brake valve

3 : 배기관 4 : 흡기관3: exhaust pipe 4: intake pipe

5 : 바이패스관 6 : 에어탱크5: bypass tube 6: air tank

7 : 체크밸브 8 : 가속페달7: check valve 8: accelerator pedal

9 : 가속페달 각도센서 10 : ECU9: accelerator pedal angle sensor 10: ECU

11 : 회전 액츄에이터 12 : 로터리 밸브11: rotary actuator 12: rotary valve

13 : 에어 클리너 14 : 리드밸브13: air cleaner 14: reed valve

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 디젤 엔진의 가속성능 향상장치는 배기 밸브와 배기 브레이크 밸브 사이의 배기관과 흡기관을 연통시키는 바이패스관과, 상기 바이패스관에 마련되어 압축공기가 충진되어 있는 공기탱크와, 상기 공기탱크와 배기관 사이의 바이패스관에 설치되어 배기관에서 공기탱크의 방향으로만 공기를 통과시키는 체크 밸브와, 상기 공기탱크와 흡기관 사이의 바이패스관에 설치되어 운전자의 가속페달 조작시 공기탱크를 흡기관에 연통시키도록 운전자의 가속페달 조작상태를 감지하는 가속페달 각도센서와, 상기 가속페달 각도센서의 신호를 받는 ECU와, 상기 ECU에 의해 회전 조작되는 회전 액츄에이터와, 상기 회전 액츄에이터에 의해 상기 바이패스관의 연통상태를 조절하는 로터리 밸브로 구성되는 밸브수단을 포함하여 이루어짐을 특징으로 한다.In order to achieve the above object, an acceleration performance improving apparatus for a diesel engine according to the present invention includes a bypass pipe for communicating an exhaust pipe and an intake pipe between an exhaust valve and an exhaust brake valve, and the compressed air is provided in the bypass pipe. It is installed in the filled air tank, the check pipe between the air tank and the exhaust pipe to pass air only in the direction of the air tank from the exhaust pipe, and the bypass pipe between the air tank and the intake pipe An accelerator pedal angle sensor for detecting an accelerator pedal operation state of the driver to communicate the air tank to the intake pipe during the driver's accelerator pedal operation, an ECU receiving the signal from the accelerator pedal angle sensor, and a rotation rotated by the ECU. A valve composed of an actuator and a rotary valve that controls the communication state of the bypass pipe by the rotary actuator. Characterized in that it comprises a stop means.

이하, 첨부된 도면을 참조하여 본 발명의 실시 예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 디젤 엔진의 가속성능 향상장치를 도시한 것으로서, 배기 밸브(1)와 배기 브레이크 밸브(2) 사이의 배기관(3)과 흡기관(4)을 연통시키는 바이패스관(5)과, 상기 바이패스관(5)에 마련된 공기탱크(6)와, 상기 공기탱크(6)와 배기관(3) 사이의 바이패스관(5)에 설치되어 배기관(3)에서 공기탱크(6)의 방향으로만 공기를 통과시키는 체크 밸브(7)와, 상기 공기탱크(6)와 흡기관(4) 사이의 바이패스관(5)에 설치되어 운전자의 가속페달 조작시 공기탱크(6)를 흡기관(4)에 연통시키는 밸브수단으로 구성되어 있다.1 illustrates an acceleration performance improving apparatus for a diesel engine according to the present invention, and includes a bypass pipe communicating an exhaust pipe 3 and an intake pipe 4 between an exhaust valve 1 and an exhaust brake valve 2. 5), an air tank 6 provided in the bypass pipe 5, and a bypass pipe 5 between the air tank 6 and the exhaust pipe 3, and installed in the exhaust pipe 3 in the air tank (6). It is provided in the check valve (7) for passing the air only in the direction of 6) and the bypass pipe (5) between the air tank (6) and the intake pipe (4) during operation of the driver's accelerator pedal (6) ) Is connected to the intake pipe (4).

여기서, 상기 밸브수단은 운전자의 가속페달(8) 조작상태를 감지하는 가속페달 각도센서(9)와, 상기 가속페달 각도센서(9)의 신호를 받는 ECU(10)와, 상기 ECU(10)에 의해 회전 조작되는 회전 액츄에이터(11)와, 상기 회전 액츄에이터(11)에 의해 상기 바이패스관(5)의 연통상태를 조절하는 로터리 밸브(12)로 구성되어 있다.Here, the valve means is an accelerator pedal angle sensor 9 for detecting a driver's operation state of the accelerator pedal 8, the ECU 10 receiving the signal of the accelerator pedal angle sensor 9, and the ECU 10 The rotary actuator 11 rotates by the rotary actuator 11 and the rotary valve 12 controls the communication state of the bypass pipe 5 by the rotary actuator 11.

또한, 상기 배기관(3)과 공기탱크(6)의 사이에는 연소실을 통과하여 유입되는 공기중에 포함된 불순물을 제거하기 위하여 에어 클리너(13)를 설치하였으며, 상기 흡기관(4)에는 상기 공기탱크(6)로부터 연소실로 공급되는 공기가 역류하지 못하도록 하는 역류 방지 밸브로서 리드밸브(14)가 설치되어 있다.In addition, an air cleaner 13 is installed between the exhaust pipe 3 and the air tank 6 to remove impurities contained in the air flowing through the combustion chamber, and the air tank is installed in the intake pipe 4. A reed valve 14 is provided as a non-return valve for preventing the air supplied from (6) to the combustion chamber from flowing back.

물론, 상기 리드밸브(14)는 엔진의 흡기작용시에는 외부의 공기를 원활히 연소실로 유입시킬 수 있도록 설치되어 있다.Of course, the reed valve 14 is installed to smoothly introduce external air into the combustion chamber during the intake action of the engine.

상기한 바와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.

일반적으로 배기 브레이크는 4사이클의 디젤 엔진을 사용하고 있는 대형차량에 사용하는 것으로서 주로 고속주행중의 감속시 배기관의 배기 브레이크 밸브를 닫아 엔진을 압축기로 작동시켜 제동력을 얻고 있다.In general, the exhaust brake is used for a large vehicle using a diesel engine of four cycles, and the braking force is obtained by operating the engine as a compressor by closing the exhaust brake valve of the exhaust pipe during deceleration during high speed driving.

따라서, 상기와 같은 배기 브레이크 장치가 된 디젤엔진에 본 발명에 따른 장치가 부가된 경우에는 운전자가 주행중 감속을 위하여 상기한 배기 브레이크를 작동시키게되면, 배기관(3)은 배기 브레이크 밸브(2)에 의해 차단되어 엔진이 압축시키는 공기는 상기한 바이패스관(5)의 체크밸브(7)를 통해 상기 공기탱크(6)에 저장되게 된다.Therefore, when the apparatus according to the present invention is added to the diesel engine which becomes the exhaust brake device as described above, when the driver operates the exhaust brake for deceleration while driving, the exhaust pipe 3 is connected to the exhaust brake valve 2. The air blocked by the engine and compressed by the engine is stored in the air tank 6 through the check valve 7 of the bypass pipe 5.

물론, 상기 공기탱크(6)로 유입되는 압축공기에 포함되어 있는 이물질은 상기 공기탱크(6)에 유입되기 전에 상기 바이패스관(5)에 설치된 에어클리너(13)에 의해서 제거된다.Of course, foreign matter contained in the compressed air flowing into the air tank 6 is removed by the air cleaner 13 installed in the bypass pipe 5 before entering the air tank 6.

상기와 같이 엔진의 감속시 공기탱크(6)에 저장되어 있는 압축공기는 운전자가 다시 차량을 가속시키고자 가속페달(8)을 조작하면 그 조작상태에 따라서 연소실로 공급되어 흡기관(4)을 통해 외부로부터 공급되는 공기와 함께 연소실에 분사되는 연료의 연소를 더욱 원활하게 한다.As described above, the compressed air stored in the air tank 6 when the engine is decelerated is supplied to the combustion chamber according to the operation state when the driver operates the accelerator pedal 8 to accelerate the vehicle again. Through this, the combustion of the fuel injected into the combustion chamber together with the air supplied from the outside is made smoother.

즉, 운전자의 가속페달(8) 조작이 상기 가속페달 각도센서(9)에 의해 검출되고 ECU(10)는 상기 검출된 가속페달(8)의 조작상태에 따라서 상기 회전 액츄에이터(11)를 구동시킴으로써 상기 로터리 밸브(12)가 회전되어 공기탱크(6)의 압축공기가 흡기관(4)을 통해 외부에서 유입되는 공기와 함께 연소실로 공급되도록 하여 인젝션 펌프에서 중량되는 연료를 연소시키기에 충분한 양의 공기가 즉각적으로 제공될 수 있도록 하는 것이다.That is, the driver's operation of the accelerator pedal 8 is detected by the accelerator pedal angle sensor 9 and the ECU 10 drives the rotary actuator 11 in accordance with the operation state of the detected accelerator pedal 8. The rotary valve 12 is rotated so that the compressed air of the air tank 6 is supplied to the combustion chamber together with the air flowing in from the outside through the intake pipe 4, so that the amount of fuel sufficient to combust the heavy fuel in the injection pump To provide air immediately.

이때, 상기 리드밸브(14)는 압축공기가 연소실로 공급될 때 그 압력이 일정수준 이상이 되면 흡기관(4)을 차단하여 흡기관(4)을 통해 공기가 역류되는 것을 방지하도록 한다.In this case, when the compressed air is supplied to the combustion chamber, the reed valve 14 shuts off the intake pipe 4 to prevent the air from flowing back through the intake pipe 4 when the pressure is higher than a predetermined level.

이상과 같이, 본 발명은 공지의 배기 브레이크 장치가 장착된 디젤 엔진이 감속후 가속작용을 할 때 배기 브레이크에 의한 감속시 저장된 압축공기를 가속시 연소실로 공급되도록 함으로써, 연소실에 중량되는 연료이 연소에 충분한 양의 공기가 즉각적으로 공급되도록 하여 엔진의 가속 응답성을 크게 향상시킬 수 있는 효과가 있다.As described above, according to the present invention, when a diesel engine equipped with a known exhaust brake device accelerates after deceleration, the compressed air stored at the deceleration by the exhaust brake is supplied to the combustion chamber at the time of acceleration, whereby the fuel weighed in the combustion chamber is reduced to combustion. By supplying a sufficient amount of air immediately, there is an effect that can greatly improve the acceleration response of the engine.

Claims (3)

배기 밸브와 배기 브레이크 밸브 사이의 배기관과 흡기관을 연통시키는 바이패스관과; 상기 바이패스관에 마련되어 압축공기가 충진되어 있는 공기탱크와; 상기 공기탱크와 배기관 사이의 바이패스관에 설치되어 배기관에서 공기탱크의 방향으로만 공기를 통과시키는 체크 밸브와; 상기 공기탱크와 흡기관 사이의 바이패스관에 설치되어 운전자의 가속페달 조작시 공기탱크를 흡기관에 연통시키도록 운전자의 가속페달 조작상태를 감지하는 가속페달 각도센서와, 상기 가속페달 각도센서의 신호를 받는 ECU와, 상기 ECU에 의해 회전 조작되는 회전 액츄에이터와, 상기 회전 액츄에이터에 의해 상기 바이패스관의 연통상태를 조절하는 로터리 밸브로 구성되는 밸브수단을 포함하여 이루어짐을 특징으로 하는 디젤 엔진의 가속성능 향상장치.A bypass pipe communicating the exhaust pipe and the intake pipe between the exhaust valve and the exhaust brake valve; An air tank provided in the bypass pipe and filled with compressed air; A check valve installed in a bypass pipe between the air tank and the exhaust pipe to allow air to flow only in the direction of the air tank from the exhaust pipe; An accelerator pedal angle sensor installed at a bypass pipe between the air tank and the intake pipe to detect an accelerator pedal operation state of the driver so as to communicate the air tank to the intake pipe when the accelerator pedal is operated by the driver, and the accelerator pedal angle sensor And a valve means comprising an ECU receiving a signal, a rotary actuator rotated and operated by the ECU, and a rotary valve configured to control a communication state of the bypass pipe by the rotary actuator. Acceleration performance improving device. 제1항에 있어서, 상기 배기관과 공기탱크의 사이에는 연소실을 통과하여 유입되는 공기중에 포함된 불순물을 제거하기 위한 에어 클리너가 설치된 것을 특징으로 하는 디젤 엔진의 가속성능 향상장치.The acceleration performance improving apparatus of claim 1, wherein an air cleaner is installed between the exhaust pipe and the air tank to remove impurities contained in the air flowing through the combustion chamber. 제1항에 있어서, 상기 흡기관에는 상기 공기탱크로부터 연소실로 공급되는 공기가 역류하지 못하도록 하는 역류 방지 밸브가 설치된 것을 특징으로 하는 디젤 엔진의 가속성능 향상장치.The apparatus of claim 1, wherein the intake pipe is provided with a non-return valve for preventing the air supplied from the air tank to the combustion chamber from flowing back.
KR1019970031923A 1997-07-10 1997-07-10 Apparatus for advancing acceleration efficiency of diesel engine KR100274024B1 (en)

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KR20040026973A (en) * 2002-09-27 2004-04-01 현대자동차주식회사 Exhaust brake system
CN105781655A (en) * 2016-04-18 2016-07-20 河北工业大学 Electric control ball valve air distribution mechanism for pneumatic engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158364A (en) * 1983-02-28 1984-09-07 Hino Motors Ltd Intake/exhaust device of engine
KR960017241U (en) * 1994-11-30 1996-06-17 Exhaust brake system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158364A (en) * 1983-02-28 1984-09-07 Hino Motors Ltd Intake/exhaust device of engine
KR960017241U (en) * 1994-11-30 1996-06-17 Exhaust brake system

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