KR20030062676A - a device of engine exhaust brake - Google Patents

a device of engine exhaust brake Download PDF

Info

Publication number
KR20030062676A
KR20030062676A KR1020020003006A KR20020003006A KR20030062676A KR 20030062676 A KR20030062676 A KR 20030062676A KR 1020020003006 A KR1020020003006 A KR 1020020003006A KR 20020003006 A KR20020003006 A KR 20020003006A KR 20030062676 A KR20030062676 A KR 20030062676A
Authority
KR
South Korea
Prior art keywords
exhaust
cam
rocker arm
engine
protrusion
Prior art date
Application number
KR1020020003006A
Other languages
Korean (ko)
Inventor
하창훈
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020020003006A priority Critical patent/KR20030062676A/en
Publication of KR20030062676A publication Critical patent/KR20030062676A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2305/00—Valve arrangements comprising rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

PURPOSE: An engine exhaust brake device is provided to simplify configuration of the hydraulic circuit and reduce parts count and costs by reducing the number of solenoid valves. CONSTITUTION: An engine exhaust brake device comprises an exhaust locker arm(40) mounted on an exhaust locker arm shaft(50) and which has a roller(30) arranged at a side surface of the exhaust locker arm and opens/shuts an exhaust valve; a cam having double surfaces contacting the roller of the exhaust locker arm; and an actuator(60) for changing the position of the exhaust locker arm by operating in the direction parallel with a cam shaft. The cam has an exhaust protrusion(11) formed at one surface(10) of the cam, and an exhaust protrusion(11') formed at the other surface(10') of the cam. The cam further has a pressure reduction protrusion(12) formed at the position having a phase different from the phase of the exhaust protrusion at the other surface of the cam.

Description

엔진 배기 브레이크 장치{a device of engine exhaust brake}A device of engine exhaust brake

본 발명은 엔진 배기 브레이크 장치에 관한 것으로써, 더욱 상세하게는 이중 캠면과 유압 액츄에이터를 이용한 엔진 배기 브레이크 장치에 관한 것이다.The present invention relates to an engine exhaust brake apparatus, and more particularly, to an engine exhaust brake apparatus using a double cam surface and a hydraulic actuator.

엔진 배기 브레이크 장치는 차량 감속시 운전자가 풋 브레이크 사용할 때보다 높은 제동력을 얻기 위해 엔진의 배기 저항을 이용하는 장치이다.The engine exhaust brake device is a device that uses the exhaust resistance of the engine to obtain a higher braking force when the vehicle decelerates than when the driver uses the foot brake.

상기한 엔진 배기 브레이크 장치는 배기관을 셧업(close)하여 엔진 제동력을 얻기도 하며, 도 4에 도시되어 있는 바와 같이 피스톤의 하사점으로부터 상사점으로의 압축 행정시 연료 분사를 중지하고 배기 밸브를 약간 열어주어 배기되는 공기로부터 엔진에 저항이 발생하도록 하는 장치이다.The engine exhaust brake device may close the exhaust pipe to obtain an engine braking force, and as shown in FIG. 4, the fuel injection stops at the compression stroke from the bottom dead center to the top dead center of the piston, and the exhaust valve is slightly closed. It is a device that generates resistance in the engine from the air that is opened and exhausted.

따라서, 종래에는 상기한 엔진 배기 브레이크 장치를 이용하여 캠 면(cam face)의 기본적인 사이클(base circle)를 따라 움직이는 로커 암(2:rock arm)의 팔로우어(3:follower)의 움직임에 강제적으로 유압 액츄에이터(4)에 의해 로커 암(2)을 움직이도록 구성되어 있다.Therefore, conventionally, the above-described engine exhaust brake device is forcibly applied to the movement of the follower (3: follower) of the rocker arm (2: rock arm) moving along the basic circle (cam circle) base circle (cam face) It is comprised so that the rocker arm 2 may be moved by the hydraulic actuator 4.

상기한 로커 암(2)을 움직이게 하기 위해서는 높은 유압을 필요로 하며, 윤활 회로에서 공급되는 오일을 작동유체로 사용하고 배기 로커 암 외의 인젝터 로커 암의 움직임을 이용하여 고압펌핑 작용을 하여 작동 시작 시점과 끝나는 시점을 솔레노이드 밸브(4)로서 제어한다.In order to move the rocker arm 2, high hydraulic pressure is required, and the operation start point is achieved by using the oil supplied from the lubrication circuit as a working fluid and using the movement of the injector rocker arm other than the exhaust rocker arm to perform a high pressure pumping operation. The time point at which the process ends with and is controlled as the solenoid valve 4.

그러나, 상기한 종래의 방법은 액츄에이터에 높은 유압을 발생시켜야 하고,각 액츄에이터 당 솔레노이드 밸브가 추가되어 엔진의 구조가 복잡하게되는 문제점을 내포하고 있다.However, the conventional method described above has a problem of generating high hydraulic pressure in the actuator and adding a solenoid valve for each actuator, which complicates the structure of the engine.

또한, 높은 유압에 의한 액츄에이터 동작에 따른 로커 암 롤러에 충격이 가해져 롤로 및 캠면 손상 우려의 문제점을 내포하고 있다.In addition, an impact is applied to the rocker arm roller according to the actuator operation due to the high hydraulic pressure, thereby including a problem of the roller and cam surface damage.

따라서, 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로, 액츄에이터의 작동 방향을 종래의 작동 방향과는 다르게 캠 샤프트와 평행한 방향으로 작동하도록 시스템을 구성하고, 추가로 캠 샤프트 배기 캠면을 이중으로 설계하여 엔진 브레이크 작동시 유압 액츄에이터에 의해 이동된 로커 암이 캠면을 따라 배기 브레이크 작동을 수행할 수 있는 엔진 배기 브레이크 장치를 제공하기 위한 것이다.Accordingly, an object of the present invention is to solve the above problems, and to configure the system to operate the actuator in a direction parallel to the cam shaft different from the conventional operating direction, and further double the cam shaft exhaust cam surface It is designed to provide an engine exhaust brake device capable of performing the exhaust brake operation along the cam surface of the rocker arm moved by the hydraulic actuator during the engine brake operation.

도 1은 본 발명에 적용되는 엔진 배기 브레이크 장치 구성도 이고,1 is a configuration diagram of an engine exhaust brake apparatus applied to the present invention,

도 2는 본 발명에 따른 이중면을 갖는 캠 구성 측면도이고,2 is a side view of a cam configuration having a double surface according to the present invention;

도 3은 본 발명에 따른 이중면을 갖는 캠 구성 단면도이고,3 is a cross-sectional view of a cam configuration having a double surface according to the present invention,

도 4는 본 발명에 따른 엔진 배기 브레이크 장치의 작동 액츄에이터의 장착 위치 구성 단면도이고,4 is a sectional view of the mounting position of the actuating actuator of the engine exhaust brake apparatus according to the present invention;

도 5는 종래의 엔진 배기 브레이크 장치 구성도 이다.5 is a configuration diagram of a conventional engine exhaust brake apparatus.

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

10 : 캠 일면 10': 캠 이면 11 : 배기 돌출부10: Cam one side 10 ': Cam rear 11: Exhaust protrusion

12 : 감압 돌출부 30 : 롤러 40 : 배기 로커 암12 pressure reduction protrusion 30 roller 40 exhaust rocker arm

50 : 배기 로커 암 샤프트 60 : 액츄에이터50: exhaust rocker arm shaft 60: actuator

100 : 차량 동작상태 검출장치 200 : 엔진 제어 장치100: vehicle operation state detection device 200: engine control device

300 : 솔레노이드 밸브300: solenoid valve

상기한 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,

배기 로커 암 샤프트에 구비되어 있고 일측면에 롤러가 구비되어 동작상태 변화에 따라 배기밸브를 개폐하는 배기 로커 암과; 상기 로커 암의 롤러와 외접하여 회전하는 이중면을 갖는 캠과; 상기 캠 축과 평행한 방향으로 작동하여 배기 로커 암의 위치를 변화시키는 액츄에이터로 구비되어 있는 것을 특징으로 한다.An exhaust rocker arm provided on the exhaust rocker arm shaft and provided with a roller on one side thereof to open and close the exhaust valve according to a change in operation state; A cam having a double surface that rotates externally to the roller of the rocker arm; It is characterized in that it is provided with an actuator for operating in a direction parallel to the cam axis to change the position of the exhaust rocker arm.

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 엔진 배기 브레이크 장치 구성도 이고, 도 2는 본 발명에 따른 이중면을 갖는 캠 구성 단면도이고, 도 3은 본 발명에 따른 엔진 배기 브레이크 제어 장치 구성도 이다.1 is a configuration diagram of an engine exhaust brake apparatus according to the present invention, FIG. 2 is a cross-sectional view of a cam configuration having a double surface according to the present invention, and FIG. 3 is a configuration diagram of an engine exhaust brake control apparatus according to the present invention.

상기 도 1에 도시되어 있는 바와 같이 엔진 배기 브레이크 장치는 배기 로커 암(40)이 배기 로커 암 샤프트(50)에 구비되어 있고, 상기 배기 로커 암(40) 일측면에는 롤러(30)가 구비되어 있어서, 캠(10)이 상기 로커 암(40) 일측에 구비된 롤러(30)와 외접하여 회전한다.As shown in FIG. 1, the engine exhaust brake device includes an exhaust rocker arm 40 disposed on an exhaust rocker arm shaft 50, and a roller 30 is provided on one side of the exhaust rocker arm 40. In this case, the cam 10 rotates externally with the roller 30 provided on one side of the rocker arm 40.

상기에서 캠(10)은 도 2에 도시되어 있는 바와 같이 그 면이 일면(10)과 이면(20)을 갖는 이중면으로 형성 구비되어 있다.As shown in FIG. 2, the cam 10 is formed in a double surface having one surface 10 and a rear surface 20.

즉, 도 3의 a에 도시되어 있는 바와 같이 캠 일면(10)에는 종래와 동일하게 배기 돌출부(11)가 형성되어 있고, 캠 이면(10')에는 도 3의 b에 도시되어 있듯이 상기 캠 일면(10)과 같은 위상으로 배기 돌출부(11')가 형성되어 있다.That is, as shown in a of FIG. 3, the cam protrusion 10 is formed on the cam one surface 10 in the same manner as in the prior art, and the cam one surface 10 ′ is shown on the cam one surface 10 ′ as shown in b of FIG. 3. The exhaust protrusion 11 'is formed in the same phase as (10).

또한, 상기 캠 이면(10')에는 배기 돌출부(11')가 형성된 위상과 다른 소정의 위치에 감압 돌출부(12)가 추가 형성되어 있다.In addition, the cam back surface 10 'is further provided with a pressure reducing protrusion 12 at a predetermined position different from the phase in which the exhaust protrusion 11' is formed.

그리고, 상기 배기 로커 암(40)에는 도 1에 도시되어 있듯이 액츄에이터(60)가 상기 캠(10,10') 축과 평행한 방향으로 작동하여 상기 배기 로커 암(40)의 위치를 변화시킬 수 있도록 구비되어 있다.In addition, as illustrated in FIG. 1, the exhaust rocker arm 40 may operate with the actuator 60 in a direction parallel to the cams 10 and 10 ′ axes to change the position of the exhaust rocker arm 40. It is equipped to be.

상기 액츄에이터(60)의 동작상태를 살펴보면, 도 4에 도시되어 있는 바와 같이 엔진 제어 장치(200)로 운전자의 배기 브레이크 작동 스위치 조작상태 및 엔진 동작상태를 검출하는 차량 동작상태 검출장치(100)의 신호가 인가되면, 상기 엔진 제어 장치(200)는 메모리에 설정 된 프로그램에 의해 제어되어 유압 공급 및 해제 제어신호를 솔레노이드 밸브(300)로 출력한다.Looking at the operating state of the actuator 60, as shown in Figure 4 of the vehicle operating state detection device 100 for detecting the exhaust brake operation switch operation state and the engine operating state of the driver with the engine control device 200 When the signal is applied, the engine control device 200 is controlled by a program set in the memory to output the hydraulic supply and release control signal to the solenoid valve 300.

상기 솔레노이드 밸브(300)는 상기 엔진 제어 장치(200)에서 출력되는 제어신호에 의해 그 위치가 가변되어 오일펌프로부터 공급되는 소정의 압력을 갖는 유압을 상기 액츄에이터(60)의 일측면으로 공급하고 타측면에 공급된 유압을 해제시킨다.The solenoid valve 300 is changed in position by a control signal output from the engine control device 200 to supply a hydraulic pressure having a predetermined pressure supplied from an oil pump to one side of the actuator 60 and the other. Release the hydraulic pressure supplied to the side.

이에 액츄에이터(60)는 상기 솔레노이드 밸브(300)의 위치 변화에 따라 오일펌프로부터 공급되는 소정의 압력에 의해 캠 축과 평행한 방향으로 작동하여 상기 배기 로커 암(40)을 배기 로커 암 샤프트(50)와 평행하게 이동시킨다.The actuator 60 is operated in a direction parallel to the cam axis by a predetermined pressure supplied from the oil pump in accordance with the positional change of the solenoid valve 300 to move the exhaust rocker arm 40 to the exhaust rocker arm shaft 50. Move parallel to).

이 때, 상기 액츄에이터(60)의 작동에 의해 상기 배기 로커 암(40)이 캠의 이면(10') 측으로 이동되면, 캠 이면(10')에 추가 형성된 감압 돌출부(12)에 배기 로커 암(40)에 구비된 롤러(30)가 위치할 때 배기 밸브가 미세하게 열려 엔진 배기 브레이크 구동이 이루어진다.At this time, when the exhaust rocker arm 40 is moved to the rear surface 10 'side of the cam by the operation of the actuator 60, the exhaust rocker arm (3) is formed on the pressure reducing protrusion 12 formed on the cam rear surface 10'. When the roller 30 provided at 40 is located, the exhaust valve is opened finely to perform engine exhaust brake driving.

이로써, 캠면을 따라 배기 로커 암이 운동하므로 엔진 배기 브레이크의 정확한 응답 성능을 얻을 수 있다.As a result, the exhaust rocker arm moves along the cam surface, so that an accurate response performance of the engine exhaust brake can be obtained.

이상 설명한 바와 같이 본 발명은 액츄에이터의 작동 방향을 종래의 작동 방향과는 다르게 캠 사프트와 평행한 방향으로 작동하도록 시스템을 구성하고, 추가로 캠 샤프트 배기 캠면을 이중으로 설계하여 엔진 브레이크 작동시 유압 액츄에이터에 의해 이동된 로커 암이 캠면을 따라 배기 브레이크 작동을 수행함으로써, 엔진 배기 브레이크의 정확한 응답 성능을 얻을 수 있고, 솔레노이드 밸브 개수를 줄일 수 있어서 유압 회로 구성이 간단해짐과 동시에 구성 부품의 감소로 원가를 절감할 수 있는 효과가 있다.As described above, the present invention configures the system to operate the actuator in a direction parallel to the cam shaft, unlike the conventional operation direction, and additionally design the camshaft exhaust cam surface in double to operate the hydraulic actuator during engine brake operation. By performing the exhaust brake operation along the cam surface by the rocker arm moved by it, accurate response performance of the engine exhaust brake can be obtained, and the number of solenoid valves can be reduced, simplifying the hydraulic circuit configuration and reducing the cost of components. There is an effect to reduce the.

Claims (2)

배기 로커 암 샤프트에 구비되어 있고 일측면에 롤러가 구비되어 동작상태 변화에 따라 배기밸브를 개폐하는 배기 로커 암과;An exhaust rocker arm provided on the exhaust rocker arm shaft and provided with a roller on one side thereof to open and close the exhaust valve according to a change in operation state; 상기 로커 암의 롤러와 외접하여 회전하는 이중면을 갖는 캠과;A cam having a double surface that rotates externally to the roller of the rocker arm; 상기 캠 축과 평행한 방향으로 작동하여 배기 로커 암의 위치를 변화시키는 액츄에이터로 구비되어 있는 것을 특징으로 엔진 배기 브레이크 장치.And an actuator operating in a direction parallel to the cam axis to change the position of the exhaust rocker arm. 제 1항에 있어서, 캠은 일면에 배기 돌출부가 형성되어 있고, 이면에는 상기 일면과 동일 위상으로 배기 돌출부가 형성되어 있되, 상기 이면에 배기 돌출부가 형성된 위상과 다른 소정의 위치에 감압 돌출부가 추가 형성되어 있는 것을 특징으로 하는 엔진 배기 브레이크 장치.The cam has an exhaust protrusion formed on one surface thereof, and an exhaust protrusion formed on the rear surface of the cam in the same phase as the one surface, and the pressure reducing protrusion is added to a predetermined position different from the phase where the exhaust protrusion formed on the rear surface thereof. The engine exhaust brake apparatus characterized by the above-mentioned.
KR1020020003006A 2002-01-18 2002-01-18 a device of engine exhaust brake KR20030062676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020020003006A KR20030062676A (en) 2002-01-18 2002-01-18 a device of engine exhaust brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020020003006A KR20030062676A (en) 2002-01-18 2002-01-18 a device of engine exhaust brake

Publications (1)

Publication Number Publication Date
KR20030062676A true KR20030062676A (en) 2003-07-28

Family

ID=32218519

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020020003006A KR20030062676A (en) 2002-01-18 2002-01-18 a device of engine exhaust brake

Country Status (1)

Country Link
KR (1) KR20030062676A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101221219B1 (en) * 2005-12-08 2013-01-11 두산인프라코어 주식회사 Engine brake apparatus
US8434451B2 (en) 2009-09-25 2013-05-07 Hyundai Motor Company Engine brake unit having combined oil passage
US8499740B2 (en) 2009-09-22 2013-08-06 Hyundai Motor Company Engine braking system for vehicles
US8602000B2 (en) 2009-07-31 2013-12-10 Hyundai Motor Company Engine brake unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6075610U (en) * 1983-10-31 1985-05-27 いすゞ自動車株式会社 Internal combustion engine valve actuation device
JPH1089033A (en) * 1996-09-19 1998-04-07 Hino Motors Ltd Valve system of engine
KR19980052099A (en) * 1996-12-24 1998-09-25 김영귀 Rocker arm of engine
KR19980060454A (en) * 1996-12-31 1998-10-07 박병재 Engine brake system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6075610U (en) * 1983-10-31 1985-05-27 いすゞ自動車株式会社 Internal combustion engine valve actuation device
JPH1089033A (en) * 1996-09-19 1998-04-07 Hino Motors Ltd Valve system of engine
KR19980052099A (en) * 1996-12-24 1998-09-25 김영귀 Rocker arm of engine
KR19980060454A (en) * 1996-12-31 1998-10-07 박병재 Engine brake system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101221219B1 (en) * 2005-12-08 2013-01-11 두산인프라코어 주식회사 Engine brake apparatus
US8602000B2 (en) 2009-07-31 2013-12-10 Hyundai Motor Company Engine brake unit
US8499740B2 (en) 2009-09-22 2013-08-06 Hyundai Motor Company Engine braking system for vehicles
US8434451B2 (en) 2009-09-25 2013-05-07 Hyundai Motor Company Engine brake unit having combined oil passage

Similar Documents

Publication Publication Date Title
CN111655981B (en) Engine brake castellated structure mechanism
KR101501039B1 (en) Dedicated rocker arm engine brake
JP5350235B2 (en) Variable valve actuator and engine brake
KR20010032950A (en) Variable lost motion valve actuator and method
CN101144400A (en) Variable valve lift device
CN110566315B (en) Compression release type engine in-cylinder braking device
JPH10288018A (en) Engine brake device
JPH04301108A (en) Hydraulic lifter with valve stopping device
JP2007247628A (en) Exhaust valve control device for internal combustion engine
CN100419224C (en) Valve mechanism for internal combustion engine
EP1878883B1 (en) Valve operating device for internal combustion engine
US7140333B2 (en) Apparatus for an internal combustion engine
JP4580937B2 (en) System and method for preventing collision between piston and valve of non-freewheel internal combustion engine
CN107842408B (en) Variable valve lift mechanism, method for controlling valve lift and engine
KR20030062676A (en) a device of engine exhaust brake
US6283090B1 (en) Method and apparatus for operating a hydraulically-powered compression release brake assembly on internal combustion engine
US6666178B1 (en) Valve deactivation with an electro-hydraulic actuator
JP3908397B2 (en) Engine brake device for internal combustion engine
KR101145631B1 (en) Electro-hydraulic variable valve lift apparatus
CN107060943B (en) A kind of low energy consumption brake switch
KR101756720B1 (en) Valve Control Apparatus
KR100633926B1 (en) Valve de-activation apparatus of vehicle engine
JP2782312B2 (en) Variable intake valve closing timing device
KR20090046511A (en) Valve tappet of variable valve device of direct acting type for vehicle
JP2006132480A (en) Valve train for internal combustion engine

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application