KR100188757B1 - An warming-up device for a diesel engine - Google Patents
An warming-up device for a diesel engine Download PDFInfo
- Publication number
- KR100188757B1 KR100188757B1 KR1019940021054A KR19940021054A KR100188757B1 KR 100188757 B1 KR100188757 B1 KR 100188757B1 KR 1019940021054 A KR1019940021054 A KR 1019940021054A KR 19940021054 A KR19940021054 A KR 19940021054A KR 100188757 B1 KR100188757 B1 KR 100188757B1
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- fuel
- vacuum
- plunger
- solenoid valve
- engine
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Classifications
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- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
- F02M31/08—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/068—Introducing corrections for particular operating conditions for engine starting or warming up for warming-up
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
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- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
디이젤 엔진의 연료인 경유를 배기가스로서 소정온도로 가열하여 분사토록함으로써, 무화상태를 좋게하여 엔진의 시동을 용이하게 하고, 완전연소가 이루어지도록 하여 연료 소모율을 줄이며, 유해가스의 배출을 방지할 목적으로; 연료계통의 연료펌프와 인젝션 펌프 사이의 연료라인상에 개재되어 배기관의 우회관에 배치되는 연료필터와 : 전원인 배터리와 퓨즈 및 이그니션 키이를 개재시켜 연결되어 상기 연료필터내의 연료온도에 따라 동작되는 작동 스위치와 : 엔진 흡기계통의 분기관로상에 첵밸브와 진공탱크를 개재시켜 연결되어 상기 작동 스위치의 동작에 따라 엔진의 진공안을 개폐하는 진공 솔레노이드 밸브와 : 상기 진공 솔레노이드 밸브와 연결되어 이의 동작에 따라 배기관의 우회관 입, 출구에 배치되는 개폐밸브를 동작시키는 액튜에이터를 포함하여 이루어지는 디이젤 엔진의 연료 워밍업장치를 제공한다.The diesel fuel, which is diesel fuel, is heated as an exhaust gas to be injected at a predetermined temperature, so that the atomization state can be improved, so that the engine can be easily started, the combustion is completed, the fuel consumption rate is reduced, and the emission of harmful gas can be prevented. For the purpose; A fuel filter interposed on a fuel line between a fuel pump and an injection pump of a fuel system and disposed in a bypass pipe of an exhaust pipe: connected through a battery, a fuse, and an ignition key, which is operated according to the fuel temperature in the fuel filter Operation switch: A vacuum solenoid valve connected to the branch pipe of the engine intake pipe via a check valve and a vacuum tank to open and close the vacuum in the engine according to the operation of the operation switch; and the operation is connected to the vacuum solenoid valve. According to the present invention, there is provided a fuel warming up device for a diesel engine including an actuator for operating an on / off valve disposed at a bypass pipe inlet and an outlet of an exhaust pipe.
Description
제1도는 본 발명 장치의 구성도.1 is a block diagram of an apparatus of the present invention.
제2도는 본 발명에 적용되는 작동 스위치의 구성도.2 is a configuration diagram of an operation switch applied to the present invention.
제3도는 본 발명에 적용되는 진공 솔레노이드 밸브의 구성도.3 is a block diagram of a vacuum solenoid valve applied to the present invention.
제4도는 본 발명에 적용되는 액튜에이터의 구성도.4 is a configuration diagram of an actuator applied to the present invention.
[발명의 분야][Field of Invention]
본 발명은 디이젤 엔진의 연료 워밍 업(Warming Up) 장치에 관한 것으로서, 보다 상세하게는 디이젤 엔진의 연료인 경유를 배기가스로서 소정온도로 가열하여 분사토록함으로써, 무화상태를 좋게 하여 엔진의 시동을 용이하게 하고, 완전 연소가 이루어지도록 하여 연료 소모율을 줄이며, 유해가스의 배출을 방지할 수 있는 디이젤 엔진의 연료 워밍업 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel warming up device for a diesel engine. More particularly, the diesel engine is started by heating the diesel fuel, which is the fuel of the diesel engine, as an exhaust gas to be sprayed at a predetermined temperature to improve the atomization. The present invention relates to a fuel warming up device for a diesel engine, which facilitates, enables complete combustion, reduces fuel consumption, and prevents emissions of harmful gases.
[종래기술][Private Technology]
잘 알려진 바와 같이, 자동차의 동력원으로 이용되는 디이젤 엔진은 점화연소방식인, 가솔린 엔진과는 달리 압축 착화방식으로 연료를 연소시켜 출력을 얻게 된다.As is well known, diesel engines used as power sources of automobiles, unlike gasoline engines, which are ignition-combustion, burn fuel by compression ignition to obtain power.
즉, 디이젤 엔진은 외부로부터 공기를 흡입하여 압축한 후에 이에 연료를 분사함으로써, 자연 발화에 의하여 연소가 이루어지도록 되어 있다.That is, the diesel engine inhales and compresses air from the outside and injects fuel therein, whereby combustion occurs by spontaneous combustion.
그러므로 이에 사용되는 연료는 그의 온도가 낮을수록 안개처럼 미세한 무화상태로 분사가 이루어지지 않아 연소가 지연됨은 물론 이에 따른 불완전 연소로 유해가스가 다량 배출됨과 동시에 엔진의 출력이 저하되고 연료소모율이 증대되며, 초기시동이 어려워진다.Therefore, the lower the temperature of the fuel used for this, the combustion is delayed because it is not sprayed in the fine atomization state like fog, and the harmful gas is discharged due to incomplete combustion, and the output of the engine is lowered and the fuel consumption rate is increased. , The initial startup becomes difficult.
이에따라 디이젤 엔진에 있어서는 가능한 한 소정 온도이상의 상태를 유지하는 연료를 공급하는 것이 바람직한데, 종래 디이젤 엔진에 있어서는 연료를 가열하여 줄 수 있는 수단이 구비되어 있지 않은 바, 특히 동절기에 상기와 같은 문제점이 발생된다.Accordingly, in diesel engines, it is desirable to supply fuel that maintains a temperature above a predetermined temperature as possible. However, conventional diesel engines are not provided with means for heating fuel. Is generated.
[발명의 요지][Summary of invention]
따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로서, 본 발명의 목적은 디이젤 엔진의 연료인 경유를 배기가스로서 소정온도로 가열하여 분사토록 함으로써, 무화상태를 좋게 하여 엔진의 시동을 용이하게 하고, 완전 연소가 이루어지도록 하여 연료 소모율을 줄이며, 유해가스의 배출을 방지할 수 있는 디이젤 엔진의 연료 워밍업장치를 제공하려는 것이다.Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to make the atomization state easy to start the engine by heating the diesel fuel, which is the fuel of the diesel engine, to a predetermined temperature as an exhaust gas. It is to provide a fuel warming device of the diesel engine to reduce the fuel consumption rate, and to prevent the emission of harmful gas by allowing the complete combustion to occur.
이를 실현하기 위하여 본 발명은 연료계통의 연료펌프와 인젝션 펌프사이의 연료라인상에 개재되어 배기관의 우회관에 배치되는 연료필터와; 전원인 배터리와 퓨즈 및 이그니션 키이를 개재시켜 연결되어 상기 연료필터내의 연료온도에 따라 동작되는 작동 스위치와; 엔진 흡기계통의 분기관로상에 첵밸브와 진공탱크를 개재시켜 연결되어 상기 작동 스위치의 동작에 따라 엔진의 진공안을 개폐하는 진공 솔레노이드밸브와 ; 상기 진공 솔레노이드 밸브와 연결되어 이의 동작에 따라 배기관의 우회관 입, 출구에 배치되는 개폐밸브를 동작시키는 액튜에이터를 포함하여 이루어지는 디이젤 엔진의 연료 워밍업장치를 제공한다.In order to realize this, the present invention includes a fuel filter interposed on the fuel line between the fuel pump and the injection pump of the fuel system disposed in the bypass pipe of the exhaust pipe; An operation switch connected to the battery as a power source via a fuse and an ignition key and operated according to a fuel temperature in the fuel filter; A vacuum solenoid valve connected to the branch pipe of the engine intake pipe via a check valve and a vacuum tank to open and close the vacuum in the engine according to the operation of the operation switch; It is connected to the vacuum solenoid valve provides a fuel warm-up device for a diesel engine comprising an actuator for operating an opening and closing valve disposed in the inlet, outlet of the bypass pipe in accordance with its operation.
이하, 상기의 목적을 구체적으로 실현할 수 있는 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described in detail.
[실시예]EXAMPLE
제1도는 본 발명에 의한 장치의 계통도로서, 본 발명이 관계하는 디이젤 엔진의 연료는 미도시된 연료탱크로부터 연료펌프(2)와 연료 필터(4), 그리고 인젝션 펌프(6)를 통하여 엔진(8)의 각 실린더에 분사가 이루어지게 된다.1 is a system diagram of a device according to the present invention, in which fuel of a diesel engine according to the present invention is supplied from a fuel tank (not shown) to a fuel pump (2), a fuel filter (4), and an injection pump (6). Injection is made to each cylinder of 8).
이러한 연료계통에 있어서, 상기 연료필터(4)를 배기계통에 배치하되, 배기관(10)의 소정위치 즉, 엔진(8)에 가까운 부분에서 우회관(12)을 형성하여 이에 연료필터(4)를 배치하였다.In such a fuel system, the fuel filter 4 is disposed in the exhaust system, and the bypass pipe 12 is formed at a predetermined position of the exhaust pipe 10, that is, the portion close to the engine 8, thereby forming the fuel filter 4. Was placed.
그리고 연료필터(4)에는 전원인 배터리(14)와 퓨즈(16) 및 이그니션 키이(18)를 개재시켜 연결되는 작동 스위치(20)를 배치하였으며, 상기 작동스위치(20)는 연료의 온도에 따라 작동되도록 하였다.In addition, an operation switch 20 connected to the fuel filter 4 via a battery 14, a fuse 16, and an ignition key 18, which is a power source, is disposed, and the operation switch 20 depends on the temperature of the fuel. It worked.
상기 작동 스위치(20)는 엔진의 흡기계통(22)에서 분기되어 첵밸브(24)와 진공탱크(26)가 배치된 분기 관로(28)의 진공 솔레노이드 밸브(30)와 연결하였으며, 상기 진공 솔레노이드 밸브(30)는 우회관(12)의 전,후단측 배기관(10)에 설치되어 배기관(10)의 우회관(12)을 선택적으로 폐쇄하는 한상의 개폐밸브(32)(34)를 동작시키는 진공 액튜에이터(36)(38)과 연통되는 구성을 갖는다.The operation switch 20 is connected to the vacuum solenoid valve 30 of the branch conduit 28 where the check valve 24 and the vacuum tank 26 are arranged by branching from the intake pipe 22 of the engine, and the vacuum solenoid The valve 30 is installed at the front and rear end exhaust pipes 10 of the bypass pipe 12 to operate the on / off valves 32 and 34 of the upper phase to selectively close the bypass pipe 12 of the exhaust pipe 10. It has a configuration in communication with the vacuum actuators 36 and 38.
상기에서 작동 스위치(20)는 제2도에서와 같이 연료필터(4)의 소정 위치에 고착되는 케이스(40)의 내부 중간부에 배치되는 입력 및 출력단자(42)(44)와; 상기 입, 출력단자(42)(44)의 상측으로 배치되며, 저면에 이동단자(46)가 부착되어 승강하는 플런저(48)와; 상기 플런저(48)의 상측으로 배치되어 플런저(48)를 항시 하측으로 밀어주는 탄발력을 발휘하는 탄발부재(50)와; 상기 플런저(48)의 하측에 연결봉(52)으로 연결되며, 하단의 돌출부(54)가 냉각수에 잠기어 냉각수의 온도에 따라 신축되는 벨로우즈(56)를 포함하여 이루어진다.In the above, the operation switch 20 includes input and output terminals 42 and 44 disposed in an inner middle portion of the case 40 fixed to a predetermined position of the fuel filter 4, as shown in FIG. A plunger 48 disposed above the input and output terminals 42 and 44, and having a mobile terminal 46 attached to the bottom thereof to move up and down; An elastic member 50 disposed above the plunger 48 and exerting an elastic force for always pushing the plunger 48 downward; It is connected to the lower side of the plunger 48 by a connecting rod 52, the lower projection 54 is made of a bellows 56 is stretched in accordance with the temperature of the cooling water is immersed in the cooling water.
이에따라 연료의 온도가 소정의 온도 이하일 때에는 탄발부재(50)의 탄발력에 의하여 플런저(48)가 하강하여 이의 이동단자(46)가 입, 출력단자(42)(44)를 연결하여 주어 이에 연결된 액튜에이터(36)(38)로 전원을 인가하게 되며, 연료가 소정의 온도 이상으로 상승되면 이에 벨로우즈(56)가 팽창하면서 플런저(48)를 상승시켜 이동단자(46)가 입, 출력단자(42)(44)와 이격되면서 전원을 차단하게 된다.Accordingly, when the temperature of the fuel is lower than the predetermined temperature, the plunger 48 is lowered by the elastic force of the elastic member 50, and the mobile terminal 46 is connected to the input and output terminals 42 and 44, thereby being connected thereto. The power is supplied to the actuators 36 and 38, and when the fuel rises above a predetermined temperature, the bellows 56 expands and the plunger 48 is raised to move the mobile terminal 46 to the input and output terminals 42. The power is cut off while being spaced apart from the (44).
그리고 상기 작동 스위치(20)로부터 전원을 인가받아 동작되는 진공 솔레노이드 밸브(30)는 제3도에서와 같이 케이싱(58)과 필드코일(60), 그리고 플런저(62)와 상기 플런저(62)를 항시 상측으로 밀어주는 탄발부재(64)를 구비하여 구성되는데, 상기 플런저(62)는 상측에 좌우를 관통하는 유로(66)와, 그 상측에 진공 탱크(26)측으로의 U턴유로(68)가 형성된다.In addition, the vacuum solenoid valve 30 operated by receiving power from the operation switch 20 operates the casing 58, the field coil 60, the plunger 62, and the plunger 62 as shown in FIG. 3. The plunger 62 is configured to include an elastic member 64 which is always pushed upward. The plunger 62 has a flow path 66 penetrating right and left on the upper side, and a U turn flow path 68 on the vacuum tank 26 side thereof. Is formed.
이에따라 이에 전원이 인가되면 제3도에서와 같이 플런저(62)가 하강하면서 유로(66)에 의하여 진공탱크(26)와 진공 액튜에이터(36)(38)와 연통된다.Accordingly, when power is applied thereto, the plunger 62 is lowered as shown in FIG. 3 while communicating with the vacuum tank 26 and the vacuum actuators 36 and 38 by the flow path 66.
그리고 진공 솔레노이드 밸브(12)에 전원이 차단되면 플런저(62)가 탄발부재(64)의 복원력에 의하여 하강하여 진공 액튜에이터(36)(38)에 진공이 전달되지 않게 된다.When the power is cut off from the vacuum solenoid valve 12, the plunger 62 is lowered by the restoring force of the bullet member 64 so that vacuum is not transmitted to the vacuum actuators 36 and 38.
또한, 상기 진공 솔레노이드 밸브(30)와 연통되는 진공 액튜에이터(36)(38)는 제4도에서와 같이 케이싱(70)(72) 내부에 피스톤로드(74)(76)를 포함하는 피스톤(78)(80)과, 상기 피스톤(78)(80)을 피스톤로드(74)(76)측으로 밀어주는 탄발부재(82)(84)를 포함하여 이루어진다.In addition, the vacuum actuators 36 and 38 in communication with the vacuum solenoid valve 30 may include a piston 78 including piston rods 74 and 76 inside the casings 70 and 72 as shown in FIG. ) And a ballistic member (82) (84) for pushing the piston (78) (80) toward the piston rod (74) (76) side.
이에따라 이에 진공압이 전달되면 피스톤(78)(80)이 제4도에서와 같이 탄발부재(82)(84)의 탄발력을 극복하면서 후퇴하여 피스톤 로드(74)(76)의 선단에 연결된 배기관(10)의 개폐밸브(32)(34)를 작동시켜 배기관(10)을 막아주어 배기가스가 우회관(12)을 통해 배출되면서 연료필터(4)를 가열함으로써, 연료를 가열하게 된다.Accordingly, when a vacuum pressure is transmitted thereto, the pistons 78 and 80 retreat while overcoming the elastic force of the elastic members 82 and 84 as shown in FIG. 4, and are connected to the end of the piston rods 74 and 76. By operating the on-off valves 32 and 34 of 10 to block the exhaust pipe 10, the fuel gas is heated by heating the fuel filter 4 while exhaust gas is discharged through the bypass pipe 12.
그리고 공급되던 진공압이 솔레노이드 밸브(30)의 작동으로 해제되면 원래의 위치로 복귀하면서 개폐밸브(32)(34)가 우회관(12)의 입, 출구를 폐쇄토록하여 배기가스가 정상적으로 배기관을 통해 배출되도록 한다.When the supplied vacuum pressure is released by the operation of the solenoid valve 30, the return valve returns to its original position, and the shutoff valves 32 and 34 close the inlet and outlet of the bypass pipe 12 so that the exhaust gas is normally discharged. To be discharged.
이와같이 본 발명은 동절기와 같이 외기 온도가 낮아져 연료의 온도가 소정의 온도 이하로 하강하면 작동 스위치(20)의 온 동작으로 배터리(14)의 전원이 진공 솔레노이드 밸브(30)로 인가되면 상기의 작용으로 엔진(8)으로부터 배출되는 배기가스의 온도로 연료필터의 연료를 가열토록 한 것이다.As described above, when the temperature of the fuel decreases below a predetermined temperature as in the winter, when the temperature of the fuel drops below a predetermined temperature, the power of the battery 14 is applied to the vacuum solenoid valve 30 by the on operation of the operation switch 20. Therefore, the fuel of the fuel filter is heated at the temperature of the exhaust gas discharged from the engine 8.
이상에서와 같이 본 발명에 의하면 디이젤 엔진의 연료인 경유를 배기가스로서 소정온도로 가열하여 분사토록함으로써, 무화상태를 좋게하여 엔진의 시동을 용이하게 하고, 완전 연소가 이루어지도록 하여 연료 소모율을 줄이며, 유해가스의 배출을 방지할 수 있는 발명인 것이다.As described above, according to the present invention, diesel fuel, which is a fuel of diesel engines, is heated as an exhaust gas to be injected at a predetermined temperature, so that the atomization state is improved, engine starting is facilitated, and complete combustion is achieved, thereby reducing fuel consumption rate. It is an invention that can prevent the emission of harmful gases.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021054A KR100188757B1 (en) | 1994-08-25 | 1994-08-25 | An warming-up device for a diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021054A KR100188757B1 (en) | 1994-08-25 | 1994-08-25 | An warming-up device for a diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960008031A KR960008031A (en) | 1996-03-22 |
| KR100188757B1 true KR100188757B1 (en) | 1999-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940021054A KR100188757B1 (en) | 1994-08-25 | 1994-08-25 | An warming-up device for a diesel engine |
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| Country | Link |
|---|---|
| KR (1) | KR100188757B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444443B1 (en) * | 2001-08-22 | 2004-08-16 | 현대자동차주식회사 | paraffin elimination system for diesel engine |
-
1994
- 1994-08-25 KR KR1019940021054A patent/KR100188757B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444443B1 (en) * | 2001-08-22 | 2004-08-16 | 현대자동차주식회사 | paraffin elimination system for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960008031A (en) | 1996-03-22 |
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