KR100208757B1 - Apparatus for preventing of overheating in a turbo-charger engine - Google Patents
Apparatus for preventing of overheating in a turbo-charger engine Download PDFInfo
- Publication number
- KR100208757B1 KR100208757B1 KR1019960062880A KR19960062880A KR100208757B1 KR 100208757 B1 KR100208757 B1 KR 100208757B1 KR 1019960062880 A KR1019960062880 A KR 1019960062880A KR 19960062880 A KR19960062880 A KR 19960062880A KR 100208757 B1 KR100208757 B1 KR 100208757B1
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- Prior art keywords
- turbocharger
- engine
- exhaust gas
- turbine
- bypass pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
본 발명의 목적은 터보차저 엔진의 고속고부하 운전으로 인한 과열시 바이패스되는 배기가스압을 이용하여 공기를 송풍하므로써 냉각시킬 수 있도록 한 터보차저 엔진의 과열방지장치를 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an overheat prevention device of a turbocharger engine that enables cooling by blowing air using exhaust gas pressure bypassed when overheating due to high speed and high load operation of the turbocharger engine.
상기한 목적을 달성하기 위한 본 발명은The present invention for achieving the above object
배기가스의 유동에너지를 이용하여 공기를 과급하여 엔진에 공급하는 터보차저(1)와 배기가스압이 일정치 이상일 때 터보차저의 터빈(2)을 우회하여 배기가스의 일부를 배출하게 되는 바이패스 관로(5)를 개방토록 작동하는 바이패스 밸브(4)와를 구비하는 터보차저 엔진에 있어서,Bypass pipe that discharges a part of the exhaust gas by bypassing the turbocharger 1 for supercharging the air by using the flow energy of the exhaust gas and supplying the engine to the engine and the turbine 2 of the turbocharger when the exhaust gas pressure is above a certain value. A turbocharger engine having a bypass valve (4) for operating (5) to open,
상기 바이패스 관로(5)를 통해 배출되는 배기가스에 의해 회전하는 터빈(7)과,A turbine 7 rotating by the exhaust gas discharged through the bypass pipe 5;
상기 바이패스 관로상의 터빈(7)의 회전에 의해 배기매니폴드(9)와 터보차저(1)측에 공기를 송풍하는 송풍팬(8)과를 포함하여 구성되는 것임을 특징으로 한다.And a blower fan 8 for blowing air to the exhaust manifold 9 and the turbocharger 1 by the rotation of the turbine 7 on the bypass pipe.
Description
본 발명은 터보차저 엔진의 과열방지장치에 관한 것이다.The present invention relates to an overheat protection device of a turbocharger engine.
터보차저는 일종의 송풍기로서 도 2 에 도시하는 것과같이 배기가스의 유동에너지를 이용하여 터빈(11)을 회전시켜 이것과 동시에 회전하는 블로어(12)에 의해 공기를 흡입하여 과급상태로 실린더(13)에 공급하는 장치로서 배기량이 같은 엔진에서도 다량의 공기를 충진하는 것이 가능하여 엔진의 출력을 향상시킬 수 있어 특히 디젤엔진에서 많이 채용하고 있다.The turbocharger is a kind of blower that rotates the turbine 11 using the flow energy of the exhaust gas as shown in FIG. 2 and sucks air by the blower 12 which rotates at the same time. As a device to supply to the engine, a large amount of air can be filled even in an engine having the same displacement, so that the output of the engine can be improved.
그런데 터보차저 엔진의 경우 고속 고부하시 배기매니폴드(13)를 통해 배출되는 배기가스압이 매우 높아지기 때문에 터빈(11)의 과회전으로 더욱 과급 효과가 증대되므로써 엔진, 특히 배기매니폴드와 터보차저의 과열을 초래하여 열응력에 의한 피로도를 증가시켜 내구성을 현저히 떨어뜨리게 되므로 이때는 배기가스를 터빈(11)을 통과하지 않고 우회하여 배출할 수 있도록 바이패스 밸브(15)를 마련하고 있다.However, in the case of the turbocharged engine, the exhaust gas pressure discharged through the exhaust manifold 13 becomes very high at high speed and high load, and thus the supercharging effect is increased by the over-rotation of the turbine 11, thereby overheating the engine, especially the exhaust manifold and the turbocharger. This results in an increase in fatigue caused by thermal stress, which significantly lowers durability. In this case, a bypass valve 15 is provided so that exhaust gas can be bypassed and discharged without passing through the turbine 11.
그러나 상기와 같이 바이패스 밸브(5)가 열리고 바이패스 관로(16)를 통해 배기가스를 우회시켜 배출할 때에는 이미 엔진과 터보차저 및 배기매니폴드가 고부하로 인해 온도가 상승된 뒤이기 때문에 열응력으로 인한 엔진블록과 배기매니폴드의 피로도가 증가하는 것을 피할 수 없다는 문제점이 있게 된다.However, when the bypass valve 5 is opened and the exhaust gas is bypassed and discharged through the bypass pipe 16 as described above, the thermal stress is increased since the engine, the turbocharger, and the exhaust manifold have been elevated due to the high load. Due to this, there is a problem that the fatigue of the engine block and the exhaust manifold cannot be increased.
이에 본 발명은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는바는 터보차저 엔진의 고속고부하 운전으로 인한 과열시 바이패스되는 배기가스압을 이용하여 공기를 송풍하므로써 냉각시킬 수 있도록 한 터보차저 엔진의 과열방지장치를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above-mentioned problems, and its object is to provide a turbocharger engine that cools down by blowing air using exhaust gas pressure bypassed during overheating due to the high speed and high load operation of the turbocharger engine. To provide overheating prevention device.
상기한 목적을 달성하기 위한 본 발명은The present invention for achieving the above object
배기가스의 유동에너지를 이용하여 공기를 과급하여 엔진에 공급하는 터보차저와 배기가스압이 일정치 이상일 때 터보차저의 터빈을 우회하여 배기가스의 일부를 배출하게 되는 바이패스 관로를 개방토록 작동하는 바이패스 밸브와를 구비하는 터보차저 엔진에 있어서,By-passing the turbocharger that charges the air by using the flow energy of the exhaust gas to supply the engine and the bypass pipe that bypasses the turbine of the turbocharger and discharges a part of the exhaust gas when the exhaust gas pressure is above a certain value. In a turbocharger engine having a pass valve,
상기 바이패스 관로를 통해 배출되는 배기가스에 의해 회전하는 터빈과,A turbine rotating by the exhaust gas discharged through the bypass pipe;
상기 바이패스 관로상의 터빈의 회전에 의해 배기매니폴드와 터보차저측에 공기를 송풍하는 송풍팬과를 포함하여 구성되는 것임을 특징으로 한다.And a blower fan that blows air to the exhaust manifold and the turbocharger side by rotation of the turbine on the bypass pipe.
도 1 은 본 발명에 의한 터보차저 엔진의 과열방지장치를 나타내는 도면1 is a view showing an overheat prevention apparatus of a turbocharger engine according to the present invention.
도 2 는 종래기술2 is a prior art
※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing
1 : 터보차저 2 : 터빈1: turbocharger 2: turbine
3 : 블로어 4 : 바이패스 밸브3: blower 4: bypass valve
5 : 바이패스 관로 6 : 배기파이프5: bypass pipe 6: exhaust pipe
7 : 터빈 8 : 송풍팬7: turbine 8: blowing fan
9 : 배기매니폴드9: exhaust manifold
이하 본 발명의 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
도 1 은 본 발명에 의한 터보차저 엔진의 과열방지장치를 나타내는 도면으로 도면에 있어서 부호 1은 엔진에 공기를 과급하도록 터빈(2)과 블로어(3)로 구성된 터보차저이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an overheat prevention apparatus for a turbocharger engine according to the present invention. In the drawing, reference numeral 1 is a turbocharger composed of a turbine 2 and a blower 3 to charge air to the engine.
부호 4는 바이패스 관로(5)에 마련된 바이패스 밸브로 배기가스압이 일정치 이상일 때 개방되어 바이패스 관로(5)를 통해 배기가스의 일부를 터빈(2)을 우회하여 배기파이프(6)로 배출하게 된다.Reference numeral 4 is a bypass valve provided in the bypass conduit 5, which is opened when the exhaust gas pressure is a predetermined value or more, bypasses the turbine 2 by a part of the exhaust gas through the bypass conduit 5 to the exhaust pipe 6. Will be discharged.
상기 바이패스 관로(5)의 도중에는 또다른 터빈(7)이 설치되며 터빈(7)은 엔진의 고속고부하 운전으로 배기가스압이 높아져 바이패스 밸브(4)가 열리고 바이패스 관로(5)를 통해 배기가스가 배출될 때 그 힘에 의해 회전하며 터빈(7)이 회전하므로써 송풍팬(8)을 돌려 찬공기를 엔진과 배기매니폴드(9) 및 터보차저(1)에 공급하여 장치의 과열을 방지한다.Another turbine 7 is installed in the middle of the bypass pipe 5, and the turbine 7 has a high exhaust gas pressure due to the high speed and high load operation of the engine, thereby opening the bypass valve 4 and exhausting the gas through the bypass pipe 5. When the gas is discharged, it is rotated by the force, and the turbine 7 rotates to turn the blower fan 8 to supply cold air to the engine, the exhaust manifold 9 and the turbocharger 1 to prevent the device from overheating. do.
배기가스압이 낮아져 바이패스 밸브(4)가 닫히게 되면 터빈(2)과 송풍팬(8)의 구동은 정지된다.When the exhaust gas pressure is lowered and the bypass valve 4 is closed, driving of the turbine 2 and the blower fan 8 is stopped.
이상과 같은 본 발명에 의한 터보차저 엔진의 과열방지장치에 의하면 터보차저를 우회하여 배기가스의 일부를 배출하는 바이패스 관로상에 터빈과 송풍팬을 설치하는 것에 의해서 바이패스 밸브가 열리게 되는 고속운전시 배기가스에 의해 송풍팬을 돌려 엔진과 터보차저 및 배기매니폴드에 찬공기를 공급하여 냉각시키게 되므로써 열피로를 저감시켜 장치의 내구성 및 엔진효율을 증대시키는 효과가 있게된다.According to the overheat prevention apparatus of the turbocharger engine according to the present invention as described above, a high-speed operation in which the bypass valve is opened by installing a turbine and a blower fan on a bypass duct bypassing the turbocharger and discharging part of the exhaust gas. By supplying cool air to the engine, the turbocharger and the exhaust manifold by turning the blower fan by the exhaust gas, it is effective in reducing the thermal fatigue and increasing the durability and engine efficiency of the device.
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Application Number | Priority Date | Filing Date | Title |
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KR1019960062880A KR100208757B1 (en) | 1996-12-07 | 1996-12-07 | Apparatus for preventing of overheating in a turbo-charger engine |
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KR1019960062880A KR100208757B1 (en) | 1996-12-07 | 1996-12-07 | Apparatus for preventing of overheating in a turbo-charger engine |
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KR19980044755A KR19980044755A (en) | 1998-09-05 |
KR100208757B1 true KR100208757B1 (en) | 1999-07-15 |
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KR1019960062880A KR100208757B1 (en) | 1996-12-07 | 1996-12-07 | Apparatus for preventing of overheating in a turbo-charger engine |
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