KR20040046036A - Intake air flow control device and method in a Turbocharger diesel engine - Google Patents

Intake air flow control device and method in a Turbocharger diesel engine Download PDF

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Publication number
KR20040046036A
KR20040046036A KR1020020073838A KR20020073838A KR20040046036A KR 20040046036 A KR20040046036 A KR 20040046036A KR 1020020073838 A KR1020020073838 A KR 1020020073838A KR 20020073838 A KR20020073838 A KR 20020073838A KR 20040046036 A KR20040046036 A KR 20040046036A
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South Korea
Prior art keywords
turbocharger
compressor
intake
intake air
intercooler
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KR1020020073838A
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Korean (ko)
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한태수
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현대자동차주식회사
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Priority to KR1020020073838A priority Critical patent/KR20040046036A/en
Publication of KR20040046036A publication Critical patent/KR20040046036A/en

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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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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

Abstract

PURPOSE: A suction air flow control device of a turbocharger diesel engine and a control method thereof are provided to improve the performance of the diesel engine by directly supplying suction air supplied from a compressor of a turbocharger to the diesel engine. CONSTITUTION: A suction air flow control device of a turbocharger diesel engine comprises a bypass passage(144) directly connecting a first suction passage(142), supplying suction air compressed by a compressor(134) of a turbocharger(130) to an intercooler(150), to a second suction passage(146) supplying the suction air passing through the intercooler to a suction manifold(160); a three-way valve(140) supplying suction air supplied from the compressor of the turbocharger to the suction manifold through the intercooler or directly supplying the suction air to the suction manifold through the bypass passage; and a control unit(170) controlling the three-way valve according to operation conditions of the engine, and supplying the suction air supplied from the compressor of the turbocharger to the suction manifold through the intercooler or directly supplying the suction air to the suction manifold through the bypass passage.

Description

터보챠저 디젤엔진의 흡기 유동 제어장치 및 그 제어방법 {Intake air flow control device and method in a Turbocharger diesel engine}Intake air flow control device and method in a turbocharger diesel engine}

본 발명은 터보챠저 디젤엔진에 관한 것으로, 좀더 상세하게는 차량의 운전조건에 따라 터보챠저에 의해 압축된 흡기를 인터쿨러를 통해 디젤엔진으로 공급하거나 인터쿨러를 통하지 않고 직접 디젤엔진으로 공급하는 흡기 유동 제어장치 및 그 방법에 관한 것이다.The present invention relates to a turbocharged diesel engine, and more particularly, to an intake flow control for supplying an intake compressed by a turbocharger to a diesel engine through an intercooler or directly to a diesel engine without an intercooler according to driving conditions of a vehicle. An apparatus and a method thereof are provided.

최근들어, 터보챠저 디젤엔진을 장착한 차량이 급격히 늘어나고 있다. 상기 터보챠저 디젤엔진에서는, 도 1에 도시된 바와 같이, 디젤엔진(10)에서 연소된 배기가스는 배기다기관(20)을 통해 배출되고, 상기와 같이 배기다기관(20)을 통해 배출되는 배기가스가 터보챠저(30)의 터빈(32)이 회전시킨 다음 미도시된 소음기를 거쳐서 외부로 배출된다.그리고, 상기 터보챠저(30)의 터빈(32)에 축으로 연결된 압축기(34)는 흡기를 압축하여 고압의 공기를 인터쿨러(40)로 공급되고, 상기 압축기(34)에 의해 압축된 고압의 공기는 인터쿨러(40)에서 냉각된 다음 흡기다기관(50)을 통해 디젤엔진(10)으로 공급된다.In recent years, vehicles equipped with turbocharged diesel engines are rapidly increasing. In the turbocharged diesel engine, as illustrated in FIG. 1, the exhaust gas combusted in the diesel engine 10 is discharged through the exhaust manifold 20, and the exhaust gas discharged through the exhaust manifold 20 as described above. The turbine 32 of the turbocharger 30 is rotated and then discharged to the outside via a silencer (not shown). The compressor 34, which is axially connected to the turbine 32 of the turbocharger 30, receives intake air. The high pressure air is compressed and supplied to the intercooler 40, and the high pressure air compressed by the compressor 34 is cooled in the intercooler 40 and then supplied to the diesel engine 10 through the intake manifold 50. .

그러나, 상기한 바와 같은 종래 기술에 따른 터보챠저 디젤엔진은 터보챠저의 압축기에 의해 압축된 고압의 흡기가 반드시 인터쿨러를 통과하여야함에 따라 터보챠저가 아무런 부스팅(boosting) 작용을 하지 않는 저알피엠(rpm)영역에서는 인터쿨러에 의해 흡기의 마찰 손실만 가중되어 체적효율이 저하되는 문제점이 있었다.However, the turbocharger diesel engine according to the prior art as described above has a low rpm in which the turbocharger has no boosting action as the high-pressure intake compressed by the compressor of the turbocharger must pass through the intercooler. ), There is a problem that the volumetric efficiency is lowered because only the friction loss of the intake air is increased by the intercooler.

또한, 추운지방이나 겨울철 냉시동시 흡기가 인터쿨러를 통과하면서 과냉각되어 시동성을 더욱 악화시키게 되는 문제점이 있었다.In addition, there is a problem in that the intake air during the cold region or cold start during the winter passing through the intercooler to further deteriorate the startability.

이에, 본 발명은 상기한 바와 같은 종래의 제 문제점을 해소하기 위해 안출된 것으로, 디젤 엔진의 운전조건에 따라 터보챠저의 압축기로부터 공급되는 흡기를 상기 인터쿨러를 통해 흡기다기관으로 공급하거나 인터쿨러를 통하지 않고 직접 디젤엔진으로 공급함으로써, 디젤 엔진의 성능을 향상시킬 수 있는 터보챠저 디젤엔진의 흡기 유동 제어장치 및 그 제어방법을 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and according to the operating conditions of the diesel engine, the intake air supplied from the compressor of the turbocharger is supplied to the intake manifold through the intercooler or not through the intercooler. It is an object of the present invention to provide an intake air flow control device and a control method thereof of a turbocharged diesel engine which can improve the performance of a diesel engine by directly supplying the diesel engine.

상기한 목적을 달성하기 위한 본 발명에 따른 터보챠저 디젤엔진의 흡기 유동 제어장치는, 터보챠저의 압축기에 의해 압축된 흡기를 인터쿨러로 공급하기 위한 제1흡기통로와 상기 인터쿨러를 통과한 흡기를 흡기다기관으로 공급하기 위한 제2흡기통로를 직접 연결하기 위한 바이패스통로와, 상기 터보챠저의 압축기로부터 공급되는 흡기를 상기 인터쿨러를 통해 흡기다기관으로 공급하거나 상기 바이패스통로를 통해 흡기다기관으로 직접 공급하기 위한 3방향밸브와, 엔진의 운전 조건에 따라 상기 3방향밸브를 제어하여 상기 터보챠저의 압축기로부터 공급되는 흡기를 상기 인터쿨러를 통해 흡기다기관으로 공급하거나 상기 바이패스통로를 통해 흡기다기관으로 직접 공급하는 제어유닛을 포함하여 구성된 것을 특징으로 한다.상기한 목적을 달성하기 위한 본 발명에 따른 터보챠저 디젤엔진의 흡기 유동 제어방법은, 엔진 냉각수온도가 미리 설정되어 있는 기준온도 보다 낮으면 터보챠저의 압축기로부터 공급되는 흡기를 바이패스통로를 통해 흡기다기관으로 직접 공급하는 단계와, 터보챠저의 압축기 상류 및 하류의 압력차가 미리 설정되어 있는 기준압력차 보다 작으면 터보챠저의 압축기로부터 공급되는 흡기를 바이패스통로를 통해 흡기다기관으로 직접 공급하는 단계를 포함하여 구성된 것을 특징으로 한다.Intake flow control apparatus for a turbocharged diesel engine according to the present invention for achieving the above object, the first intake passage for supplying the intake air compressed by the compressor of the turbocharger and the intake air intake through the intercooler Bypass passage for directly connecting the second intake passage for supply to the manifold, and intake air supplied from the compressor of the turbocharger to the intake manifold through the intercooler or directly to the intake manifold through the bypass passage The three-way valve for controlling the three-way valve according to the operating conditions of the engine to supply the intake air from the compressor of the turbocharger to the intake manifold through the intercooler or directly to the intake manifold through the bypass passage Characterized in that it comprises a control unit. In the intake flow control method of the turbocharged diesel engine according to the present invention, if the engine coolant temperature is lower than the preset reference temperature to supply the intake air from the compressor of the turbocharger directly to the intake manifold through the bypass passage And supplying the intake air supplied from the compressor of the turbocharger directly through the bypass passage to the intake manifold if the pressure difference between the compressor upstream and downstream of the turbocharger is less than the preset reference pressure difference. It is done.

도 1은 일반적인 터보챠저 디젤엔진의 계략적인 계통도,1 is a schematic system diagram of a typical turbocharger diesel engine,

도 2는 본 발명에 따른 흡기 유동 제어장치를 포함하는 터보챠저 디젤엔진의 구성도,2 is a configuration diagram of a turbocharged diesel engine including an intake air flow control device according to the present invention;

도 3은 본 발명에 따른 터보챠저 디젤엔진의 흡기 유동 제어방법의 순서도이다.3 is a flow chart of the intake air flow control method of the turbocharged diesel engine according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

130 : 터보챠저140 : 3방향밸브130: turbocharger 140: three-way valve

144 : 바이패스통로150 : 인터쿨러144: bypass passage 150: inter cooler

170 : 제어유닛170: control unit

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 2는 본 발명에 따른 흡기 유동 제어장치를 포함하는 터보챠저 디젤엔진의 구성도이다.2 is a block diagram of a turbocharged diesel engine including an intake air flow control device according to the present invention.

상기 도 2에 도시된 바와 같이, 디젤엔진(110)에서 연소된 배기가스는 배기다기관(120)을 통해 배출되고, 상기와 같이 배기다기관(120)을 통해 배출되는 배기가스가 터보챠저(130)의 터빈(132)이 회전시킨 다음 미도시된 소음기를 거쳐서 외부로 배출된다.As shown in FIG. 2, the exhaust gas combusted in the diesel engine 110 is discharged through the exhaust manifold 120, and the exhaust gas discharged through the exhaust manifold 120 is turbocharged 130 as described above. The turbine 132 is rotated and then discharged to the outside via a silencer (not shown).

그리고, 상기 터보챠저(130)의 터빈(132)에 축으로 연결된 압축기(134)는 흡기를 압축하고, 압축된 고압의 흡기는 제어유닛(170)에 의해 제어되는 3방향밸브(140)의 작동상태에 따라 제1흡기통로(142)를 통해 인터쿨러(150)로 공급되거나, 바이패스통로(144)를 통해 흡기다기관(160)으로 직접 공급된다.이때, 상기 바이패스통로(144)는 터보챠저(130)의 압축기(134)에 의해 압축된 흡기를 인터쿨러(150)로 공급하기 위한 제1흡기통로(142)와 상기 인터쿨러(150)를 통과한 흡기를 흡기다기관(160)으로 공급하기 위한 제2흡기통로(146)를 직접 연결하도록 되어 있다.In addition, the compressor 134 connected to the turbine 132 of the turbocharger 130 in a shaft compresses intake air, and the compressed high-pressure intake air is operated by the three-way valve 140 controlled by the control unit 170. Depending on the condition, the first intake passage 142 is supplied to the intercooler 150 or the bypass passage 144 is directly supplied to the intake manifold 160. At this time, the bypass passage 144 is a turbocharger. A first intake passage 142 for supplying the intake air compressed by the compressor 134 of the 130 to the intercooler 150 and a second intake air supply for the intake air passing through the intercooler 150 to the intake manifold 160. The second intake passage 146 is connected directly.

상기 제어유닛(170)은 상기 압축기(134)의 상류 및 하류의 압력을 감지하기 위한 압력센서와(181, 183), 엔진의 냉각수 온도를 감지하기 위한 냉각수온도센서(185)와, 엔진의 스로틀 개도량을 감지하기 위한 스로틀포지션센서(187)와, 엔진 알피엠을 감지하기 위한 엔진알피엠센서(189)에 의해 감지된 데이터를 바탕으로 상기 3방향밸브(140)를 제어하도록 되어 있다.The control unit 170 includes pressure sensors 181 and 183 for detecting pressures upstream and downstream of the compressor 134, a coolant temperature sensor 185 for detecting a coolant temperature of the engine, and a throttle of the engine. The three-way valve 140 is controlled based on the data sensed by the throttle position sensor 187 for detecting the opening amount and the engine RPM sensor 189 for detecting the engine RPM.

상기와 같이 구성된 본 발명에 따른 터보챠저 디젤엔진의 흡기 유동 제어장치 및 그 제어방법을 도 3을 참조하여 상세히 설명하면 다음과 같다.An intake flow control apparatus and a control method of the turbocharger diesel engine according to the present invention configured as described above will be described in detail with reference to FIG. 3.

도 3은 본 발명에 따른 터보챠저 디젤엔진의 흡기 유동 제어방법을 설명하기 위한 순서도이다.3 is a flowchart illustrating a method for controlling intake air flow of a turbocharged diesel engine according to the present invention.

상기 도 3에 도시된 바와 같이, 단계(S1)에서는 제어유닛(170)이 냉각수온도센서(185)에 의해 감지된 냉각수온도가 미리 설정되어 있는 기준온도 보다 낮으면 단계(S2)를 수행하고, 기준온도 이상이면 단계(S3)를 수행한다. 즉, 단계(S1)에서는 냉시동 여부를 판단하는 것이다.As shown in FIG. 3, in step S1, when the coolant temperature detected by the coolant temperature sensor 185 is lower than a preset reference temperature, the control unit 170 performs step S2. If it is above the reference temperature, step S3 is performed. That is, in step S1, it is determined whether to cold start.

상기 단계(S2)에서는 상기 제어유닛(170)이 3방향밸브(140)를 제어하여 상기 터보챠저(130)의 압축기(132)로부터 압축되어 공급되는 흡기를 바이패스통로(144)를 통해 흡기다기관(160)으로 직접 공급시킨다.상기 단계(S3)에서는 엔진알피엠센서(189)에 의해 감지된 엔진 알피엠의 변화량이 미리 설정되어 있는 기준 알피엠 변화량 보다 큼과 더불어 스로틀포지션센서(187)에 의해 감지된 스로틀 개도 변화량이 미리 설정되어 있는 기준개도 변화량 보다 큰지를 판단하여 이러한 조건을 만족하면 단계(S4)를 수행하고, 이러한 조건을 만족하지 많으면 단계(S5)를 수행한다. 즉, 상기 단계(S3)는 급가속이나 언덕 등판 등의 운전상태 여부를 판단하기 위한 것이다.In the step S2, the control unit 170 controls the three-way valve 140 to supply the intake air compressed and supplied from the compressor 132 of the turbocharger 130 through the bypass passage 144. In step S3, the change amount of the engine ALPM detected by the engine RMP sensor 189 is greater than the preset reference ALPM change amount, and is detected by the throttle position sensor 187. If it is determined that the throttle opening degree change amount is greater than the preset reference opening degree change amount, this step is performed if this condition is satisfied, and if it is not satisfied this step, step S5 is performed. That is, the step (S3) is for determining whether the driving state, such as sudden acceleration or hill climbing.

상기 단계(S4)에서는 상기 제어유닛(170)이 3방향밸브(140)를 제어하여 터보챠저(130)의 압축기(132)로부터 공급되는 흡기를 인터쿨러(150)를 통해흡기다기관(160)으로 공급시킨다.In step S4, the control unit 170 controls the three-way valve 140 to supply the intake air supplied from the compressor 132 of the turbocharger 130 to the intake manifold 160 through the intercooler 150. Let's do it.

그리고, 상기 단계(S5)에서는 제어유닛(170)이 압력센서(181, 183)에 의해 감지된 압축기(134)의 상류 및 하류의 압력의 차이를 구한 다음, 이 압력차가 미리 설정되어 있는 기준 압력차 보다 작으면 상기 단계(S2)를 수행하여 상기 터보챠저(130)의 압축기(132)로부터 압축되어 공급되는 흡기를 바이패스통로(144)를 통해 흡기다기관(160)으로 직접 공급시키고, 기준 압력차 이상이면 상기 단계(S4)를 수행하여, 터보챠저(130)의 압축기(132)로부터 공급되는 흡기를 인터쿨러(150)를 통해 흡기다기관(160)으로 공급시킨다.In the step S5, the control unit 170 obtains the difference between the pressures upstream and downstream of the compressor 134 sensed by the pressure sensors 181 and 183, and then the pressure difference is preset. If smaller than the difference by performing the step (S2) to supply the intake air compressed by the compressor 132 of the turbocharger 130 directly to the intake manifold 160 through the bypass passage 144, the reference pressure If the difference is greater than or equal to step S4, the intake air supplied from the compressor 132 of the turbocharger 130 is supplied to the intake manifold 160 through the intercooler 150.

즉, 상기 단계(S5)는 저알피엠 구간에서는 마찰손실을 줄이기 위해 흡기를 바이패스시키고, 고알피엠 구간에서는 속도 변화에 따라 능동적으로 대응하기 위해 인터쿨러(150)를 통해 흡기를 공급하는 것이다.That is, the step (S5) is to bypass the intake air to reduce the friction loss in the low PM section, and to supply the intake air through the intercooler 150 in order to actively respond to the change in speed in the high AL section.

이상에서 설명한 바와 같이 본 발명에 따르면, 디젤 엔진의 운전조건에 따라 터보챠저의 압축기로부터 공급되는 흡기를 상기 인터쿨러를 통해 흡기다기관으로 공급하거나 인터쿨러를 통하지 않고 직접 디젤엔진으로 공급함으로써, 디젤 엔진의 성능을 향상시킬 수 있는 효과가 있다.As described above, according to the present invention, the performance of the diesel engine by supplying the intake air supplied from the compressor of the turbocharger according to the operating conditions of the diesel engine to the intake manifold through the intercooler or directly to the diesel engine without passing through the intercooler, There is an effect to improve.

Claims (3)

터보챠저의 압축기에 의해 압축된 흡기를 인터쿨러로 공급하기 위한 제1흡기통로와 상기 인터쿨러를 통과한 흡기를 흡기다기관으로 공급하기 위한 제2흡기통로를 직접 연결하기 위한 바이패스통로와, 상기 터보챠저의 압축기로부터 공급되는 흡기를 상기 인터쿨러를 통해 흡기다기관으로 공급하거나 상기 바이패스통로를 통해 흡기다기관으로 직접 공급하기 위한 3방향밸브와, 엔진의 운전 조건에 따라 상기 3방향밸브를 제어하여 상기 터보챠저의 압축기로부터 공급되는 흡기를 상기 인터쿨러를 통해 흡기다기관으로 공급하거나 상기 바이패스통로를 통해 흡기다기관으로 직접 공급하는 제어유닛을 포함하여 구성된 터보챠저 디젤엔진의 흡기 유동 제어장치.A bypass passage for directly connecting a first intake passage for supplying the intake air compressed by the compressor of the turbocharger to the intercooler and a second intake passage for supplying the intake air passing through the intercooler to the intake manifold; A three-way valve for supplying intake air from the compressor to the intake manifold through the intercooler or directly to the intake manifold through the bypass passage; and controlling the three-way valve according to an engine operating condition. An intake flow control device for a turbocharger diesel engine comprising a control unit for supplying intake air from the compressor to the intake manifold through the intercooler or directly to the intake manifold through the bypass passage. 제 1 항에 있어서,The method of claim 1, 상기 압축기의 상류 및 하류의 압력을 감지하기 위한 압력센서와, 엔진의 냉각수 온도를 감지하기 위한 냉각수온도센서와, 엔진의 스로틀 개도량을 감지하기 위한 스로틀포지션센서와, 엔진 알피엠을 감지하기 위한 엔진알피엠센서를 더 포함하여 구성되는 한편, 상기 제어유닛은, 상기 각 센서들에 의해 감지된 값을 바탕으로 상기 3방향밸브를 제어하는 것을 특징으로 하는 터보챠저 디젤엔진의 흡기 유동 제어장치.A pressure sensor for detecting the pressure upstream and downstream of the compressor, a coolant temperature sensor for detecting the coolant temperature of the engine, a throttle position sensor for detecting the throttle opening amount of the engine, and an engine for detecting the engine ALPM And an RPM sensor, wherein the control unit controls the three-way valve based on the values sensed by the respective sensors. 엔진 냉각수온도가 미리 설정되어 있는 기준온도 보다 낮으면 터보챠저의 압축기로부터 공급되는 흡기를 바이패스통로를 통해 흡기다기관으로 직접 공급하는 단계와, 터보챠저의 압축기 상류 및 하류의 압력차가 미리 설정되어 있는 기준압력차 보다 작으면 터보챠저의 압축기로부터 공급되는 흡기를 바이패스통로를 통해 흡기다기관으로 직접 공급하는 단계를 포함하여 구성된 터보챠저 디젤엔진의 흡기 유동 제어방법.If the engine coolant temperature is lower than the preset reference temperature, the intake air supplied from the compressor of the turbocharger is directly supplied to the intake manifold through a bypass passage, and the pressure difference between the compressor upstream and downstream of the turbocharger is preset. And a step of directly supplying intake air supplied from the compressor of the turbocharger to the intake manifold through a bypass passage if the reference pressure difference is smaller than the reference pressure difference.
KR1020020073838A 2002-11-26 2002-11-26 Intake air flow control device and method in a Turbocharger diesel engine KR20040046036A (en)

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KR20060003537A (en) * 2004-07-06 2006-01-11 현대자동차주식회사 Turbo-charger failure prevention controlling device of diesel engine and method thereof
KR100623646B1 (en) 2004-07-06 2006-09-19 현대자동차주식회사 Intake system of vehicle
CN110043357A (en) * 2018-01-15 2019-07-23 陕西重型汽车有限公司 A kind of ICS intercooler system with temp regulating function

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KR20060003537A (en) * 2004-07-06 2006-01-11 현대자동차주식회사 Turbo-charger failure prevention controlling device of diesel engine and method thereof
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CN110043357A (en) * 2018-01-15 2019-07-23 陕西重型汽车有限公司 A kind of ICS intercooler system with temp regulating function

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