KR100528190B1 - Heater performance elevation device - Google Patents
Heater performance elevation device Download PDFInfo
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- KR100528190B1 KR100528190B1 KR10-2002-0068639A KR20020068639A KR100528190B1 KR 100528190 B1 KR100528190 B1 KR 100528190B1 KR 20020068639 A KR20020068639 A KR 20020068639A KR 100528190 B1 KR100528190 B1 KR 100528190B1
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- egr
- bypass passage
- heater
- pipe
- cooler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/025—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from both the cooling liquid and the exhaust gases of the propulsion plant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
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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
- 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
- F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
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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
- 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
- F02M2026/001—Arrangements; Control features; Details
- F02M2026/005—EGR valve controlled by an engine speed signal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
본 발명은 EGR시스템을 이용한 히터성능 향상장치에 관한 것으로서, 특히 EGR쿨러의 출력측으로부터 배기관으로 연결되는 바이패스통로를 형성하고, 상기 바이패스통로의 분기점에 EGR 가스가 흡기측 또는 배기관 측으로 선택 공급되도록 하는 체크밸브를 형성하므로서, EGR 작동구간이 아닌 경우에도 EGR 가스가 EGR쿨러와 바이패스통로를 통해 유동되도록 하여 EGR쿨러를 경유하여 히터코어로 공급되는 냉각수의 온도가 EGR가스에 의해 상승되도록 하여 히터성능이 향상되도록 한 EGR시스템을 이용한 히터성능 향상장치에 관한 것이다.The present invention relates to a heater performance improving apparatus using an EGR system, and in particular, to form a bypass passage connected to the exhaust pipe from the output side of the EGR cooler, so that the EGR gas is selectively supplied to the intake side or the exhaust pipe side at the branch point of the bypass passage. By forming a check valve to allow the EGR gas to flow through the EGR cooler and the bypass passage even in the non-EGR operating section, the temperature of the coolant supplied to the heater core via the EGR cooler is increased by the EGR gas. The present invention relates to a heater performance improving apparatus using an EGR system to improve performance.
Description
본 발명은 EGR시스템을 이용한 히터성능 향상장치에 관한 것으로서, 특히 EGR 작동구간이 아닌 경우에도 EGR 가스가 EGR쿨러와 바이패스통로를 통해 유동되도록 하여 EGR쿨러를 경유하여 히터코어로 공급되는 냉각수의 온도가 EGR가스에 의해 상승되도록 하여 히터성능이 향상되도록 한 EGR시스템을 이용한 히터성능 향상장치에 관한 것이다.The present invention relates to an apparatus for improving heater performance using an EGR system. In particular, the temperature of the coolant supplied to the heater core via the EGR cooler by allowing the EGR gas to flow through the EGR cooler and the bypass passage even when the EGR cooler is not operated. It is related with the heater performance improving apparatus using the EGR system which is raised by EGR gas to improve the heater performance.
일반적으로 차량에 장착되는 히터장치는 냉각수가 통과하는 히터코어를 공조덕트 내에 설치하여 차량 내부로 유입되는 공기의 온도가 상승되도록 구성되고 있으며, 상기 히터코어로 공급되는 냉각수는 EGR쿨러를 경유하도록 하여 EGR가스를 냉각시키는 데에도 사용하고 있다.In general, the heater device mounted on the vehicle is configured to install a heater core through which the cooling water passes in the air conditioning duct so that the temperature of the air flowing into the vehicle is increased, and the cooling water supplied to the heater core passes through the EGR cooler. It is also used to cool the EGR gas.
따라서, EGR가스를 효과적으로 이용하게되면 히터코어로 공급되는 냉각수의 온도를 한단계 레벨업 시킬수 있게되므로 히터성능을 향상시킬 수 있을 것이다.Therefore, effectively using the EGR gas can increase the temperature of the coolant supplied to the heater core by one level, thereby improving the heater performance.
도 3 은 종래의 EGR 시스템을 도시한 것으로서,3 shows a conventional EGR system,
엔진(1)에 흡기의 공급을 위한 흡기매니폴드(2)와 배기가스를 배기관(4)을 통해 배출시키는 배기매니폴드(3)가 형성되어 있고, 상기 배기관(4)으로부터 흡기매니폴드(2)를 향하도록 EGR파이프(5)가 연결되어 있으며, 상기 EGR파이프(5)의 도중에 EGR가스를 냉각시키기 위한 EGR쿨러(6)가 형성되어 있다.An intake manifold 2 for supplying intake air to the engine 1 and an exhaust manifold 3 for exhausting the exhaust gas through the exhaust pipe 4 are formed, and the intake manifold 2 is discharged from the exhaust pipe 4. EGR pipe 5 is connected so that the EGR pipe 5 is connected, and an EGR cooler 6 for cooling the EGR gas is formed in the middle of the EGR pipe 5.
상기 EGR쿨러(6)는 냉각수순환통로(7)를 통과하는 냉각수를 이용하여 EGR가스를 냉각시키게되며, EGR파이프(5)의 입력측에는 EGR가스의 재순환을 제어하기 위한 EGR밸브(8)가 개폐가능하게 설치된 구성이다.The EGR cooler 6 cools the EGR gas by using the coolant passing through the coolant circulation passage 7, and the EGR valve 8 for controlling the recirculation of the EGR gas is opened and closed at the input side of the EGR pipe 5. Possible installation.
상기 설명된 EGR 시스템을 이용하여 배기가스의 일부를 흡기측으로 재순환시키는 이유는 연소된 배기가스를 흡기매니폴드측으로 재순환시켜 엔진의 연소온도를 줄여줌으로서 엔진의 고속 rpm 운전영역(연소온도가 아주 높음)에서 발생되는 배출가스의 NOx를 줄이기 위함이다.The reason for recycling part of the exhaust gas to the intake side using the above-described EGR system is to reduce the combustion temperature of the engine by recycling the combusted exhaust gas to the intake manifold side, thereby reducing the engine combustion temperature (the combustion temperature is very high). This is to reduce NOx of exhaust gas generated in).
따라서, 상기 EGR 시스템을 구성하는 EGR밸브(8)는 엔진의 중고속 운전영역에서만 개방되도록 하고 있으며, EGR 쿨러를 적용하므로서 EGR 가스를 냉각시켜 EGR 가스 내의 공기 밀도를 증가시키고 이에의해 EGR가스의 충진효율이 증대되도록 하는 것이다.Therefore, the EGR valve 8 constituting the EGR system is to be opened only in the high-speed operating region of the engine, and by applying the EGR cooler, the EGR gas is cooled to increase the air density in the EGR gas, thereby filling the EGR gas. It is to increase the efficiency.
그러나, 종래의 EGR 시스템은 EGR밸브가 엔진의 고속 운전영역에서만 개방되기 때문에 EGR쿨러에 의한 냉각수의 온도상승효과를 필요에 따라 효과적으로 얻을 수 없었고, 특히 엔진의 저속운전이나 시동 초기에는 EGR가스가 EGR쿨러를 통과하지 않게되므로 히터코아로 공급되는 냉각수의 온도를 상승시지키 못하게되므로서 엔진의 히터성능을 향상시키지 못하는 문제점이 발생하고 있었다. However, in the conventional EGR system, since the EGR valve is opened only in the high speed operation region of the engine, the effect of raising the temperature of the coolant by the EGR cooler cannot be effectively obtained as necessary. Since the cooler does not pass through the cooler, the temperature of the coolant supplied to the heater core does not increase, resulting in a problem that does not improve the heater performance of the engine.
따라서, 상기 문제점을 해결하기 위한 본 발명은 EGR쿨러의 출력측으로부터 배기관으로 연결되는 바이패스통로를 형성하고, 상기 바이패스통로의 분기점에 EGR 가스가 흡기측 또는 배기관 측으로 선택 공급되도록 하는 체크밸브를 형성하므로서, EGR 작동구간이 아닌 경우에도 EGR 가스가 EGR쿨러와 바이패스통로를 통해 유동되도록 하여 EGR쿨러를 경유하여 히터코어로 공급되는 냉각수의 온도가 EGR가스에 의해 상승되도록 하여 히터성능이 향상되도록 한 EGR시스템을 이용한 히터성능 향상장치를 제공함을 목적으로 한다.Accordingly, the present invention for solving the above problems forms a bypass passage connected to the exhaust pipe from the output side of the EGR cooler, and to form a check valve to selectively supply the EGR gas to the intake side or the exhaust pipe side at the branch point of the bypass passage. Therefore, even in the non-EGR operating section, the EGR gas is allowed to flow through the EGR cooler and the bypass passage so that the temperature of the cooling water supplied to the heater core via the EGR cooler is increased by the EGR gas so that the heater performance is improved. It is an object of the present invention to provide a heater performance improving device using an EGR system.
상기 목적달성을 위한 본 발명은 The present invention for achieving the above object
엔진의 배기매니폴드와 흡기매니폴드를 상호 연결하는 EGR파이프와, EGR 파이프의 입구측에 설치되는 EGR밸브와, EGR파이프의 도중에 설치되고 냉각수 순환통로를 통과하는 냉각수를 이용하여 EGR가스를 냉각시키는 EGR쿨러를 포함하여 구성된 EGR시스템에 있어서,The EGR pipe is cooled by using an EGR pipe connecting the exhaust manifold and the intake manifold of the engine, an EGR valve installed at the inlet side of the EGR pipe, and a coolant provided in the middle of the EGR pipe and passing through the cooling water circulation passage. In an EGR system including an EGR cooler,
상기 EGR파이프의 EGR쿨러 출구측으로부터 분기되어 배기관으로 연결되는 바이패스통로와;A bypass passage branched from an EGR cooler outlet side of the EGR pipe and connected to an exhaust pipe;
상기 바이패스통로의 분기점에 설치되고 ECU의 제어에 따라 절환되어 EGR파이프 또는 바이패스통로가 선택적으로 개방되도록 하는 체크밸브와;A check valve installed at a branch point of the bypass passage and switched under control of the ECU to selectively open the EGR pipe or the bypass passage;
엔진 운전조건에 따라 상기 EGR밸브와 체크밸브를 선택적으로 제어하여 냉각수 순환통로를 통과하는 냉각수의 온도가 EGR가스에 의해 상승하도록 하는 ECU; 를 포함하여 구성한 것을 특징으로 한다.An ECU for selectively controlling the EGR valve and the check valve according to engine operating conditions so that the temperature of the coolant passing through the coolant circulation passage is increased by the EGR gas; Characterized in that configured to include.
상기 ECU는 히터가 작동되고 엔진 rpm이 EGR 작동구간이면, EGR밸브를 개방시키고 체크밸브가 바이패스통로를 차단하도록 하여 EGR가스가 흡기매니폴드로 재순환되면서 이과정에서 EGR쿨러를 경유하도록 냉각수통로를 통과하는 냉각수의 온도가 EGR가스에 의해 온도 상승되도록 하는 것을 특징으로 한다.When the heater is running and the engine rpm is the EGR operating section, the ECU opens the EGR valve and causes the check valve to block the bypass passage so that the EGR gas is recycled to the intake manifold. The temperature of the cooling water passing through is characterized in that the temperature rise by the EGR gas.
상기 ECU는 히터가 작동되고 엔진 rpm이 EGR 작동구간이 아니면, EGR밸브를 개방시키고 체크밸브가 바이패스통로를 개방하도록 하여 EGR 쿨러를 통과한 EGR가스가 바이패스통로를 통해 배기관으로 배출되도록 하여 EGR쿨러를 경유하여 히터코어로 공급되는 냉각수 온도가 EGR가스에 의해 상승되도록 하는 것을 특징으로 한다.When the heater is activated and the engine rpm is not in the EGR operating section, the EGR valve is opened and the check valve opens the bypass passage so that the EGR gas passing through the EGR cooler is discharged to the exhaust pipe through the bypass passage. The coolant temperature supplied to the heater core via the cooler may be increased by the EGR gas.
삭제delete
이하, 첨부된 도면 도 1 과 도 2 를 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 and 2.
본 발명의 설명에 있어서 종래와 동일한 구성요소에 대해서는 동일부호 표기하여 중복설명을 피하기로 한다.In the description of the present invention, the same components as in the prior art will be denoted by the same reference numerals to avoid redundant description.
본 발명의 가장 큰 특징은 EGR파이프(5)의 도중에 EGR쿨러(6)가 형성되어 있고, EGR파이프(5)의 입구측에 EGR밸브(8)가 형성되어 있는 EGR 시스템에 있어서,In the EGR system in which the EGR cooler 6 is formed in the middle of the EGR pipe 5, and the EGR valve 8 is formed in the inlet side of the EGR pipe 5,
상기 EGR파이프(5)의 EGR 쿨러(6) 출구측으로부터 바이패스통로(10)를 분기시키고, 이 바이패스통로(10)의 출구측이 배기관(4)과 연결되도록 형성하고, 상기 바이패스통로(10)의 분기점에 절환용 체크밸브(11)를 설치하여 이 체크밸브(11)의 절환동작에 의해 바이패스통로(10) 또는 EGR파이프(5)의 출력측이 선택적으로 개방되도록 하였다.The bypass passage 10 branches from the outlet side of the EGR cooler 6 of the EGR pipe 5, and the outlet side of the bypass passage 10 is connected to the exhaust pipe 4, and the bypass passage is formed. A switching check valve 11 is provided at the branch point of (10) so that the output side of the bypass passage 10 or the EGR pipe 5 is selectively opened by the switching operation of the check valve 11.
그리고, 상기 체크밸브(11)와 EGR밸브(8)는 ECU(12)의 제어에 의해 개폐 또는 절환되도록 하였는데, 상기 ECU(12)는 엔진 운전조건에 따라 체크밸브(11)와 EGR밸브(8)를 선택적으로 구동시켜 EGR가스가 EGR쿨러(6)를 통과할때 상기 이아쿨러(6)를 경유하도록 설치된 냉각수순환통로(7)를 통과하는 냉각수의 온도가 EGR 가스에 의해 상승되도록 한 것이다.In addition, the check valve 11 and the EGR valve 8 are opened or closed under the control of the ECU 12. The ECU 12 checks the valve 11 and the EGR valve 8 according to the engine operating conditions. ) Is selectively driven so that when the EGR gas passes through the EGR cooler 6, the temperature of the cooling water passing through the coolant circulation passage 7 installed through the tooth cooler 6 is increased by the EGR gas.
이와같이 구성된 본 발명의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.
엔진이 구동하면 ECU(12)는 히터 스위치가 온상태, 즉, 히터가 작동상태인지를 판단한다.When the engine is driven, the ECU 12 determines whether the heater switch is on, that is, the heater is in an operating state.
상기 판단결과 히터가 작동되고 있는 상태이면, ECU(12)는 현재 냉각수 온도가 일정온도(20℃) 이상인지를 판단하고, 이 판단결과 냉각수 온도가 일정온도(20℃) 이하이면 EGR밸브(8)를 개방하고, 체크밸브(11)가 바이패스통로(10)를 개방하도록 제어하여 EGR파이프(5)를 통과한 EGR가스가 바이패스통로(10)를 통해 배기관(4)으로 바이패스되어 배출되도록 한다.As a result of the determination, if the heater is operating, the ECU 12 determines whether the current coolant temperature is higher than or equal to the constant temperature (20 ° C). If the coolant temperature is lower than or equal to the constant temperature (20 ° C), the EGR valve 8 ) And the check valve 11 is controlled to open the bypass passage 10 so that the EGR gas passing through the EGR pipe 5 is bypassed to the exhaust pipe 4 through the bypass passage 10 and discharged. Be sure to
이과정에서 EGR쿨러(6)를 통과하는 EGR가스에 의해 냉각수 순환통로(7)를 통과하여 히터코아로 공급되는 냉각수의 온도가 상승하게되고, 이에의해 히터기능이 조기에 구현되는 효과를 기대할 수 있게된다.In this process, the temperature of the cooling water supplied to the heater core is increased by passing through the cooling water circulation passage 7 by the EGR gas passing through the EGR cooler 6, whereby the effect of implementing the heater function early can be expected. Will be.
즉, 상기 판단에서 냉각수온도가 일정온도(20℃)이하라는 것은 엔진 시동 초기 특히 겨울철 냉간시동 초기를 의미하게되며, 이러한 경우 운전자가 엔진을 켠후 곧바로 히터스위치를 온동작시켰을때 상기 설명에서와같이 히터코아로 공급되는 냉각수가 EGR쿨러(6)를 통과하는 EGR가스에 의해 온도상승하게되므로 히터의 기능이 조기에 활성화될 수 있게되는 것이다.That is, in the above judgment, the coolant temperature is lower than a predetermined temperature (20 ° C.), which means that the engine is started at the beginning of the engine, in particular, at the beginning of the cold start in winter. Since the coolant supplied to the heater core is raised in temperature by the EGR gas passing through the EGR cooler 6, the function of the heater can be activated early.
한편, 히터스위치가 온상태이고 냉각수의 온도가 일정온도 (20℃) 이상이면 ECU(12)는 현재의 엔진 rpm이 EGR 작동구간(엔진 고속운전영역) 인지를 판단한다.On the other hand, when the heater switch is in the on state and the temperature of the cooling water is equal to or higher than a predetermined temperature (20 ° C), the ECU 12 determines whether the current engine rpm is the EGR operating section (engine high speed operating region).
상기 판단결과 엔진 운전 조건이 EGR 작동구간이라고 판단되면, ECU(12)는 EGR밸브(8)를 개방하고, 체크밸브(11)가 바이패스통로(10)를 차단하도록 절환시켜 EGR 파이프(5)를 통한 EGR가스가 흡기매니폴드(2) 측으로 재순환되도록 하여 엔진에서의 연소온도를 하락시켜 NOx의 발생량이 감소되도록 하며, 이러한 작동에 의해 상기 냉각수순환통로(7)를 통과하여 히터코아로 공급되는 냉각수의 온도가 EGR가스에 의해 온도 상승하게되므로서 히터성능이 한단계 상승하게되는 것이다.If it is determined that the engine operating condition is the EGR operating section, the ECU 12 opens the EGR valve 8 and switches the check valve 11 to block the bypass passage 10 so as to block the EGR pipe 5. Through the EGR gas is recycled to the intake manifold (2) side to lower the combustion temperature in the engine to reduce the amount of NOx generated, and through this operation is supplied to the heater core through the cooling water circulation passage (7) As the temperature of the cooling water is increased by the EGR gas, the heater performance is increased by one step.
또한, 상기 판단결과 엔진 운전 조건이 EGR 작동구간이 아니라고 판단되면, ECU(12)는 앞서 설명된 바와같이 EGR밸브(8)를 개방시키고, 체크밸브(11)가 바이패스통로(10)를 개방하도록 절환시켜 EGR가스가 바이패스통로(10)를 통해 배기관(4) 측으로 바이패스되도록 하므로서, EGR가스에 의한 히터코아 공급용 냉각수 온도 상승의 효과가 지속되도록 한다.In addition, if it is determined that the engine operating condition is not the EGR operating section, the ECU 12 opens the EGR valve 8 as described above, and the check valve 11 opens the bypass passage 10. By switching so as to allow the EGR gas to be bypassed through the bypass passage 10 to the exhaust pipe 4 side, the effect of raising the temperature of the cooling water for supplying the heater core by the EGR gas is maintained.
그리고, 히터가 동작하지 않으면서 냉각수온도가 일정온도 이하일 경우에는 EGR밸브(8)를 폐쇄하여 배기가스가 배기관(4)을 통해서 모두 배출되도록 하며, 히터가 동작하지 않은 상태에서 엔진 운전조건이 EGR 작동조건이 되면 EGR밸브(8)를 개방하고 체크밸브(11)가 바이패스통로(10)를 차단하도록 하여 정상적인 EGR가스 재순환동작이 이루어지도록 한다.When the coolant temperature is lower than the predetermined temperature without the heater operating, the EGR valve 8 is closed to exhaust the exhaust gas through the exhaust pipe 4, and the engine operating condition is the EGR state when the heater is not operated. When the operating condition is reached, the EGR valve 8 is opened and the check valve 11 blocks the bypass passage 10 so that normal EGR gas recirculation operation is performed.
이상에서 설명한 바와같이 본 발명은 EGR쿨러의 출력측으로부터 배기관으로 연결되는 바이패스통로를 형성하고, 상기 바이패스통로의 분기점에 EGR 가스가 흡기측 또는 배기관 측으로 선택 공급되도록 하는 체크밸브를 형성하므로서, EGR 작동구간이 아닌 경우에도 EGR 가스가 EGR쿨러와 바이패스통로를 통해 유동되도록 하여 EGR쿨러를 경유하여 히터코어로 공급되는 냉각수의 온도가 EGR가스에 의해 상승되도록 하여 히터성능이 향상되도록 한 EGR시스템을 이용한 히터성능 향상장치를 제공하는 효과를 기대할 수 있다.As described above, the present invention forms a bypass passage connected to the exhaust pipe from the output side of the EGR cooler, and forms a check valve for selectively supplying the EGR gas to the intake side or the exhaust pipe side at the branch point of the bypass passage. Even in the non-operational section, the EGR gas flows through the EGR cooler and the bypass passage so that the temperature of the coolant supplied to the heater core via the EGR cooler is increased by the EGR gas to improve the heater performance. The effect of providing the apparatus for improving heater performance can be expected.
도 1 은 본 발명의 EGR 시스템을 이용한 히터성능 향상장치를 보인 도면.1 is a view showing a heater performance improving device using the EGR system of the present invention.
도 2 는 본 발명의 제어과정을 보인 플로우챠트.2 is a flow chart showing a control process of the present invention.
도 3 은 종래의 EGR 시스템을 보인 도면.3 shows a conventional EGR system.
※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing
1 : 엔진 2 : 흡기매니폴드1: engine 2: intake manifold
3 : 배기매니폴드 4 : 배기관3: exhaust manifold 4: exhaust pipe
5 : EGR파이프 6 : EGR쿨러5: EGR pipe 6: EGR cooler
7 : 냉각수순환통로 8 : EGR밸브7: Coolant circulation passage 8: EGR valve
10 : 바이패스통로 11 : 체크밸브10: bypass passage 11: check valve
12 : ECU12: ECU
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0068639A KR100528190B1 (en) | 2002-11-07 | 2002-11-07 | Heater performance elevation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0068639A KR100528190B1 (en) | 2002-11-07 | 2002-11-07 | Heater performance elevation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20040040508A KR20040040508A (en) | 2004-05-13 |
| KR100528190B1 true KR100528190B1 (en) | 2005-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR10-2002-0068639A KR100528190B1 (en) | 2002-11-07 | 2002-11-07 | Heater performance elevation device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08165925A (en) * | 1994-12-14 | 1996-06-25 | Toyota Motor Corp | Cooling water circulating device for egr cooler of internal combustion engine |
| JPH11125149A (en) * | 1997-10-23 | 1999-05-11 | Mitsubishi Motors Corp | Exhaust gas recirculation device |
| KR20020043726A (en) * | 2000-12-04 | 2002-06-12 | 이계안 | Vehicle cabin heater apparatus using EGR cooler |
-
2002
- 2002-11-07 KR KR10-2002-0068639A patent/KR100528190B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08165925A (en) * | 1994-12-14 | 1996-06-25 | Toyota Motor Corp | Cooling water circulating device for egr cooler of internal combustion engine |
| JPH11125149A (en) * | 1997-10-23 | 1999-05-11 | Mitsubishi Motors Corp | Exhaust gas recirculation device |
| KR20020043726A (en) * | 2000-12-04 | 2002-06-12 | 이계안 | Vehicle cabin heater apparatus using EGR cooler |
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| KR20040040508A (en) | 2004-05-13 |
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