JP2009150243A - Turbocharged engine - Google Patents

Turbocharged engine Download PDF

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Publication number
JP2009150243A
JP2009150243A JP2007326716A JP2007326716A JP2009150243A JP 2009150243 A JP2009150243 A JP 2009150243A JP 2007326716 A JP2007326716 A JP 2007326716A JP 2007326716 A JP2007326716 A JP 2007326716A JP 2009150243 A JP2009150243 A JP 2009150243A
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Prior art keywords
engine
radiator
turbocharger
vehicle
disposed
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JP2007326716A
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JP4958075B2 (en
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Yusuke Hara
佑輔 原
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2007326716A priority Critical patent/JP4958075B2/en
Priority to DE102008062145.5A priority patent/DE102008062145B4/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/22—Motor-cars
    • 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)
  • Transportation (AREA)
  • Supercharger (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To improve the durability of components disposed in an engine compartment of a turbocharged engine having a catalyst or a particulate filter disposed below a turbocharger, and also to improve the cooling performance of main body of the engine. <P>SOLUTION: The turbocharged engine 9 has: a radiator disposed in the front part of the engine compartment, an engine body disposed behind the radiator in the longitudinal direction of a vehicle, and a turbocharger 17 and a catalyst or particulate filter stacked together in the vertical direction of the vehicle and disposed ahead of the engine body in the longitudinal direction of the vehicle. When the engine compartment is viewed from the longitudinal front side of the vehicle, a space is formed between an upper surface of the radiator and a lower surface of an upper member disposed above the radiator so that the turbocharger is disposed at a position protruding upward from the upper surface of the radiator in the vertical direction of the vehicle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明はターボ過給機付きエンジンに係り、特に、排気通路にターボ過給機と触媒またはパティキュレートフィルタを備えたターボ過給付きエンジンに関する。   The present invention relates to an engine with a turbocharger, and more particularly to an engine with a turbocharger provided with a turbocharger and a catalyst or particulate filter in an exhaust passage.

車両には、排気通路にターボ過給機と触媒またはパティキュレートフィルタを備えたターボ過給付きエンジンを搭載しているものがある。図４に示すように、ターボ過給付きエンジン１０１には、エンジンルーム１０２の前部の上方にアッパメンバ１０３を配設するとともに下方にラジエータ１０４を配設し、ラジエータ１０４の車両前後方向後側にエンジン本体１０５を横置きに配設しているものがある。ラジエータ１０４は、車両前後方向後側にファンシュラウド１０６を介して冷却ファンを取り付けている。ターボ過給付きエンジン１０１には、エンジン本体１０５の車両前後方向前側にターボ過給機１０７を配設し、このターボ過給機１０７と触媒やパティキュレートフィルタを車両上下方向に重ねて配設しているものがある。   Some vehicles have a turbocharged engine equipped with a turbocharger and a catalyst or particulate filter in the exhaust passage. As shown in FIG. 4, in the turbocharged engine 101, an upper member 103 is disposed above the front portion of the engine room 102 and a radiator 104 is disposed below, and the radiator 104 is disposed at the rear side in the vehicle longitudinal direction. Some have the engine body 105 arranged horizontally. The radiator 104 has a cooling fan attached to the rear side in the vehicle front-rear direction via a fan shroud 106. The turbocharged engine 101 is provided with a turbocharger 107 on the front side in the vehicle front-rear direction of the engine body 105, and the turbocharger 107 and a catalyst or a particulate filter are arranged so as to overlap in the vehicle vertical direction. There is something that is.

従来のターボ過給付きエンジンには、クランク軸を車両幅方向に向けて搭載され、エンジン本体の車両後方側にターボ過給機を備えたターボ過給機付きエンジンにおいて、ターボ過給機をエンジン本体の排気ポート開口部よりも上方に配設し、ターボ過給機のウォータジャケットをラジエータの上端部よりも上方に配設し、ウォータジャケットから導出された冷却水の排出通路に気水分離タンクを配設し、この気水分離タンクの上端部をラジエータの上端部よりも上方に配設することで、エンジン本体の車両後方側に排気ガス浄化触媒及びエンジン補機などを配置するためのスペースを確保したものがある。
特開２０００−５６３５２号公報 The conventional turbocharged engine is mounted with the crankshaft facing in the vehicle width direction, and the turbocharger engine is equipped with a turbocharger on the vehicle rear side of the engine body. Disposed above the exhaust port opening of the main body, the turbocharger's water jacket is disposed above the upper end of the radiator, and the steam / water separation tank is placed in the cooling water discharge passage derived from the water jacket. And an upper end portion of the air / water separation tank is disposed above the upper end portion of the radiator so that an exhaust gas purifying catalyst and an engine auxiliary device are disposed on the vehicle rear side of the engine body. There is something that has secured.
JP 2000-56352 A

ところで、図４に示すように、従来のターボ過給付きエンジン１０１は、ラジエータ１０４の車両前後方向後側にエンジン本体１０５を配設し、エンジン本体１０５の車両前後方向前側にターボ過給機１０７を車両上下方向でラジエータ１０４と高さが重なる位置に配設していた。そのため、従来のターボ過給機付きエンジン１０１は、高温になるターボ過給機１０７の影響を受けてラジエータ１０４の放熱効果が低下し、エンジン本体１０５の冷却性能が低下する問題があった。
また、ターボ過給付きエンジン１０１においては、排気ガスの浄化性能を向上させるために、排気ガス温度の高いターボ過給機１０７の下方に触媒やパテイキュレートフイルタを配設することが有効である。しかし、この場合には、下方に配設した触媒やパテイキュレートフイルタによってターボ過給機１０７の搭載位置が高くなるため、エンジンルーム１０２内の上部に配設されるエンジンカバーやエンジンフードの裏側のサイレンサ等がターボ過給機１０７から受ける熱で熱劣化し、耐久性が低下する問題があった。 As shown in FIG. 4, the conventional turbocharged engine 101 has an engine body 105 disposed on the rear side of the radiator 104 in the vehicle front-rear direction, and a turbocharger 107 disposed on the front side of the engine body 105 in the vehicle front-rear direction. Is disposed at a position where the height overlaps with the radiator 104 in the vehicle vertical direction. Therefore, the conventional turbocharger-equipped engine 101 has a problem in that the heat dissipation effect of the radiator 104 is lowered due to the influence of the turbocharger 107 that becomes high temperature, and the cooling performance of the engine body 105 is lowered.
In addition, in the turbocharged engine 101, it is effective to dispose a catalyst or a particulate filter below the turbocharger 107 having a high exhaust gas temperature in order to improve the exhaust gas purification performance. However, in this case, the mounting position of the turbocharger 107 is increased by the catalyst or the particulate filter disposed below, so that the engine cover or engine hood disposed on the upper side in the engine room 102 is behind the engine hood. There is a problem that the silencer or the like is thermally deteriorated by heat received from the turbocharger 107, and durability is lowered.

この発明は、ターボ過給機の下方に触媒またはパティキュレートフィルタを配設したターボ過給機付きエンジンについて、エンジンルーム内に配設される部品の耐久性を向上させ且つエンジン本体の冷却性能を向上させることを目的とする。   The present invention relates to an engine with a turbocharger in which a catalyst or a particulate filter is disposed below the turbocharger, thereby improving the durability of components disposed in the engine room and improving the cooling performance of the engine body. The purpose is to improve.

この発明は、エンジンルームの前部にラジエータを配設するとともに前記ラジエータの車両前後方向後側にエンジン本体を配設し、このエンジン本体の車両前後方向前側にターボ過給機と触媒またはパティキュレートフィルタを車両上下方向に重ねて配設したターボ過給機付きエンジンにおいて、前記エンジンルームを車両前後方向前側から見た場合、前記ラジエータの上面とこのラジエータの上方に配設されるアッパメンバの下面との間に空間部を形成し、前記ターボ過給機を車両上下方向で前記ラジエータの上面より上方に突出する位置に配設したことを特徴とする。   According to the present invention, a radiator is disposed at a front portion of an engine room, and an engine body is disposed on a rear side of the radiator in the vehicle front-rear direction. In an engine with a turbocharger in which filters are arranged in the vehicle vertical direction, when the engine room is viewed from the front side in the vehicle front-rear direction, the upper surface of the radiator and the lower surface of an upper member disposed above the radiator, A space is formed between the turbochargers, and the turbocharger is disposed at a position protruding above the upper surface of the radiator in the vehicle vertical direction.

この発明のターボ過給機付きエンジンは、ラジエータの上面とこのラジエータの上方に配設されるアッパメンバの下面との間に形成した空間部を通してエンジン本体の車両前後方向前側に走行風を導入し、エンジンルーム内で最も高温となるターボ過給機を走行風で冷却することができるため、エンジンルーム内に配設される部品の熱劣化を防止して、耐久性を向上させることができる。
また、この発明のターボ過給機付きエンジンは、ラジエータを車両上下方向でターボ過給機と離れた下方の位置に配設することで、ターボ過給機からラジエータヘの伝熱を防止でき、エンジン本体の冷却性能を向上させることができる。
以上によって、この発明のターボ過給機付きエンジンは、エンジンルーム内に配設される部品の耐久性を向上させ、且つエンジン本体の冷却性能を向上させることができる。 The turbocharged engine of the present invention introduces running wind to the front side in the vehicle longitudinal direction of the engine body through a space formed between the upper surface of the radiator and the lower surface of the upper member disposed above the radiator, Since the turbocharger that has the highest temperature in the engine room can be cooled by the traveling wind, it is possible to improve the durability by preventing thermal deterioration of components arranged in the engine room.
Further, the engine with a turbocharger of the present invention can prevent heat transfer from the turbocharger to the radiator by disposing the radiator at a lower position away from the turbocharger in the vertical direction of the vehicle. The cooling performance of the main body can be improved.
As described above, the turbocharged engine according to the present invention can improve the durability of components arranged in the engine room and improve the cooling performance of the engine body.

以下図面に基づいて、この発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１〜図３は、この発明の実施例を示すものである。図１は車両のエンジンルームの正面図、図２は車両のエンジンルームの平面図、図３は車両のエンジンルームの右側面図である。図３において、１は車両、２はバンパ、３はフロントグリル、４はエンジンフード、５はサイレンサである。車両１は、前部に、バンパ２とフロントグリル３とサイドパネルとエンジンフード４とダッシュパネルとに囲まれるエンジンルーム６を設けている。エンジンルーム６の前部には、走行風をエンジンルーム６に導くフロントグリル３の車両前後方向後側の上方に、アッパメンバ７を車両幅方向に配設している。
車両１は、エンジンルーム６の前部にラジエータ８を配設するとともに、ラジエータ８の車両前後方向後側にターボ過給機付きエンジン９のエンジン本体１０を配設している。ラジエータ８は、前記アッパメンバ７の下方に配設している。エンジン本体１０は、前記サイレンサ５の下方に配設している。
エンジン本体１０は、複数のシリンダを有するシリンダブロック１１の上部にシリンダヘッド１２を取り付け、シリンダヘッド１２の上部にシリンダヘッドカバー１３を取り付け、シリンダブロック１１の下側にクランク軸１４を軸支するとともにシリンダブロック１１の下部にオイルパン１５を取り付けている。ターボ過給機付きエンジン９は、シリンダヘッドカバー１３にエンジンカバー１６を取り付けている。
ターボ過給機付きエンジン９は、クランク軸線Ａを車両幅方向に延ばし、シリンダ軸線Ｂの上部を車両前後方向前側に傾けて、且つエンジンカバー１６をサイレンサ５に対向させた状態で、エンジン本体１０をエンジンルーム６に配設している。エンジン本体１０の車両幅方向左側には、変速機を連結している。
ターボ過給機付きエンジン９は、エンジン本体１０の車両前後方向前側に、排気系であるターボ過給機１７と触媒１８やパティキュレートフィルタ１９を車両上下方向に重ねて配設している。ターボ過給機１７は、シリンダヘッド１２の車両前後方向前側（排気側）に取り付けられた排気マニホルドの供給する排気ガスにより駆動され、吸入した空気を圧送する。触媒１８は、ターボ過給機１７から排気管２０（図１参照）を介して導入される排気ガスを浄化する。パティキュレートフィルタ１９は、排気ガスに含まれるカーボン・煤などのパティキュレートを捕集する。ターボ過給機１７は、遮熱カバー２１で覆われている。触媒１８及びパティキュレートフィルタ１９は、遮熱カバー２２で覆われている。 1 to 3 show an embodiment of the present invention. 1 is a front view of the engine room of the vehicle, FIG. 2 is a plan view of the engine room of the vehicle, and FIG. 3 is a right side view of the engine room of the vehicle. In FIG. 3, 1 is a vehicle, 2 is a bumper, 3 is a front grille, 4 is an engine hood, and 5 is a silencer. The vehicle 1 has an engine room 6 surrounded by a bumper 2, a front grille 3, a side panel, an engine hood 4, and a dash panel at the front. In the front part of the engine room 6, an upper member 7 is disposed in the vehicle width direction above the rear side in the vehicle front-rear direction of the front grill 3 that guides the traveling wind to the engine room 6.
In the vehicle 1, a radiator 8 is disposed in the front portion of the engine room 6, and an engine body 10 of the turbocharged engine 9 is disposed on the rear side of the radiator 8 in the vehicle front-rear direction. The radiator 8 is disposed below the upper member 7. The engine body 10 is disposed below the silencer 5.
The engine body 10 has a cylinder head 12 attached to the upper part of a cylinder block 11 having a plurality of cylinders, a cylinder head cover 13 attached to the upper part of the cylinder head 12, and a crankshaft 14 supported on the lower side of the cylinder block 11 and a cylinder. An oil pan 15 is attached to the lower part of the block 11. The turbocharged engine 9 has an engine cover 16 attached to a cylinder head cover 13.
The engine 9 with a turbocharger extends the crank body A in the vehicle width direction, inclines the upper part of the cylinder axis B toward the front side in the vehicle front-rear direction, and makes the engine cover 16 face the silencer 5. Is disposed in the engine room 6. A transmission is connected to the left side of the engine body 10 in the vehicle width direction.
The turbocharger-equipped engine 9 is provided with a turbocharger 17 that is an exhaust system, a catalyst 18 and a particulate filter 19 in an up-down direction of the vehicle on the front side of the engine body 10 in the front-rear direction of the vehicle. The turbocharger 17 is driven by exhaust gas supplied by an exhaust manifold attached to the front side (exhaust side) of the cylinder head 12 in the vehicle front-rear direction, and pumps the sucked air. The catalyst 18 purifies the exhaust gas introduced from the turbocharger 17 via the exhaust pipe 20 (see FIG. 1). The particulate filter 19 collects particulates such as carbon and soot contained in the exhaust gas. The turbocharger 17 is covered with a heat shield cover 21. The catalyst 18 and the particulate filter 19 are covered with a heat shield cover 22.

このターボ過給機付きエンジン９は、図１に示すように、エンジンルーム６を車両前後方向前側から見た場合、ラジエータ８の上面２３とこのラジエータ８の上方に配設されるアッパメンバ７の下面２４との間に空間部２５を形成し、ターボ過給機１７を車両上下方向でラジエータ７の上面２３より上方に突出する位置に配設している。
これにより、このターボ過給機付きエンジン９は、ラジエータ８の上面２３とこのラジエータ８の上方に配設されるアッパメンバ７の下面２４との間に形成した空間部２５を通してエンジン本体１０の車両前後方向前側に走行風（図３に矢印Ｃで示す）を導入し、エンジンルーム６内で最も高温となるターボ過給機１７を走行風で冷却することができるため、エンジンルーム６内に配設される部品の熱劣化を防止して、耐久性を向上させることができる。 As shown in FIG. 1, the turbocharged engine 9 includes an upper surface 23 of a radiator 8 and a lower surface of an upper member 7 disposed above the radiator 8 when the engine room 6 is viewed from the front side in the vehicle front-rear direction. A space 25 is formed between the turbocharger 17 and the turbocharger 17 at a position protruding above the upper surface 23 of the radiator 7 in the vehicle vertical direction.
As a result, the engine 9 with the turbocharger is arranged so that the engine main body 10 is arranged in the front and rear direction of the vehicle through the space portion 25 formed between the upper surface 23 of the radiator 8 and the lower surface 24 of the upper member 7 disposed above the radiator 8. Since the traveling wind (indicated by arrow C in FIG. 3) is introduced to the front side in the direction and the turbocharger 17 that is the hottest in the engine room 6 can be cooled by the traveling wind, it is disposed in the engine room 6. It is possible to improve the durability by preventing thermal degradation of the parts to be produced.

このターボ過給機付きエンジン９は、図１・図２に示すように、ラジエータ８を、車両幅方向両側にタンク部２６・２７を備えるとともに冷却水を車両幅方向左側から右側に流すコア部２８を備えたクロスフロー型としている。タンク部２６は、車両幅方向左側に配設し、エンジン本体１０を冷却して昇温した冷却水を導入するラジエータ入口ホース２９を接続している。タンク部２７は、車両幅方向右側に配設し、コア部２８で冷却した冷却水をエンジン本体１０に導入するラジエータ出口ホース３０を接続している。コア部２８は、図１に矢印Ｄで示すように、上流側のタンク部２６から下流側のタンク部２７に向かって冷却水を流す。ラジエータ８は、タンク部２６・２７の取付部３１・３２によって、車体に取り付けられる。
これにより、このターボ過給機付きエンジン９は、ラジエータ８のタンク部２６・２７を車両幅方向両側に配置することで、車両上下方向の寸法が制限されたエンジルーム６の前部においてラジエータ８のコア部２８の放熱面積を最大限に確保し、且つタンク部２６・２７をラジエータ８及びアッパメンバ７間に形成した空間部２５の開口面積に影響を与えない位置に配設できる。そのため、このターボ過給機付きエンジン９は、ターボ過給機１７を冷却する走行風の風量を増加させて、エンジンルーム６内に配置される部品の耐久性さらに向上させることができる。 As shown in FIGS. 1 and 2, the turbocharged engine 9 includes a radiator 8 having tank portions 26 and 27 on both sides in the vehicle width direction and a flow of cooling water from the left side to the right side in the vehicle width direction. It is a cross flow type with 28. The tank portion 26 is disposed on the left side in the vehicle width direction, and is connected to a radiator inlet hose 29 that introduces cooling water that has been cooled and heated by the engine body 10. The tank portion 27 is disposed on the right side in the vehicle width direction, and is connected to a radiator outlet hose 30 that introduces cooling water cooled by the core portion 28 into the engine body 10. As indicated by an arrow D in FIG. 1, the core portion 28 causes cooling water to flow from the upstream tank portion 26 toward the downstream tank portion 27. The radiator 8 is attached to the vehicle body by the attachment portions 31 and 32 of the tank portions 26 and 27.
As a result, the turbocharged engine 9 is provided with the radiator 8 at the front portion of the engine room 6 where the vertical dimension of the vehicle is limited by disposing the tank portions 26 and 27 of the radiator 8 on both sides in the vehicle width direction. The heat radiation area of the core portion 28 can be ensured to the maximum, and the tank portions 26 and 27 can be disposed at positions that do not affect the opening area of the space portion 25 formed between the radiator 8 and the upper member 7. Therefore, the engine 9 with the turbocharger can further increase the durability of the components arranged in the engine room 6 by increasing the amount of traveling air that cools the turbocharger 17.

このターボ過給機付きエンジン９は、図１・図２に示すように、ラジエータ８の車両前後方向後側に２つのファンシュラウド３３・３４を車両幅方向に並列に取り付け、この２つのファンシュラウド３３・３４を介してファン径の異なる２個の冷却ファン３５・３６を車両幅方向に並列に取り付けている。２個の冷却ファン３５・３６は、それぞれファンモータ３７・３８によって駆動される。このターボ過給機付きエンジン９は、ラジエータ８の冷却水流れ方向（車両幅方向左側から右側）で上流側（車両幅方向左側）にファン径の大きな冷却ファン３５を配設するとともに下流側（車両幅方向右側）にファン径の小さい冷却ファン３６を配設し、ファン径の小さい冷却ファン３６の上方にターボ過給機１７を配設している。
これにより、このターボ過給機付きエンジン９は、冷却水温が高いラジエータ８の上流側にファン径の大きな冷却ファン３５を配設することで、ラジエータ８の上流側に当たる冷却風量を増加させて、ラジエータ８の放熱効果を高めることができる。
また、このターボ過給機付きエンジン９は、冷却水温が低いラジエータ８の下流側にファン径の小さい冷却ファン３６を配設することで、このファン径の小さい冷却ファン３６の上方に配設されるターボ過給機１７との間に確保される空間３９（図３参照）を拡大し、ラジエータ８とアッパメンバ７との間に形成される空間部２５から取り入れた走行風を車両前後方向後側に抜け易い構造にすることができる。そのため、このターボ過給機付きエンジン９は、ターボ過給機１７の冷却効果を向上させ、且つエンジン本体１０の冷却性能を向上させることができる。
さらに、このターボ過給機付きエンジン９は、ファン径の小さい冷却ファン３６とターボ過給機１７との間に確保される空間３９によって、車両１に外力が作用して車両前後方向後側に移動するファンシュラウド３４及び冷却ファン３６がターボ過給機１７に衝突することを防止し、車両１の修理にかかる費用を低減できる。 As shown in FIGS. 1 and 2, the turbocharged engine 9 has two fan shrouds 33 and 34 mounted in parallel in the vehicle width direction on the rear side of the radiator 8 in the vehicle front-rear direction, and the two fan shrouds. Two cooling fans 35 and 36 having different fan diameters are attached in parallel in the vehicle width direction via 33 and 34. The two cooling fans 35 and 36 are driven by fan motors 37 and 38, respectively. The turbocharged engine 9 is provided with a cooling fan 35 having a large fan diameter on the upstream side (left side in the vehicle width direction) in the cooling water flow direction (left side to right side in the vehicle width direction) of the radiator 8 and on the downstream side ( A cooling fan 36 with a small fan diameter is disposed on the right side in the vehicle width direction, and a turbocharger 17 is disposed above the cooling fan 36 with a small fan diameter.
Thereby, this turbocharged engine 9 increases the amount of cooling air that hits the upstream side of the radiator 8 by disposing the cooling fan 35 having a large fan diameter on the upstream side of the radiator 8 having a high cooling water temperature. The heat dissipation effect of the radiator 8 can be enhanced.
The turbocharged engine 9 is disposed above the cooling fan 36 having a small fan diameter by disposing a cooling fan 36 having a small fan diameter downstream of the radiator 8 having a low cooling water temperature. The space 39 (see FIG. 3) secured between the turbocharger 17 and the turbocharger 17 is enlarged, and the traveling wind taken from the space 25 formed between the radiator 8 and the upper member 7 is rearward in the vehicle longitudinal direction. The structure can be easily removed. Therefore, this turbocharged engine 9 can improve the cooling effect of the turbocharger 17 and improve the cooling performance of the engine body 10.
Further, the turbocharged engine 9 is provided on the rear side in the vehicle front-rear direction by an external force acting on the vehicle 1 by a space 39 secured between the cooling fan 36 having a small fan diameter and the turbocharger 17. It is possible to prevent the moving fan shroud 34 and the cooling fan 36 from colliding with the turbocharger 17, thereby reducing the cost for repairing the vehicle 1.

この発明のターボ過給機付きエンジンは、ラジエータの上方からエンジンルームに導入される走行風でターボ過給機を冷却することができ、ディーゼルエンジン以外のターボ過給機を備えたエンジンに適用することができる。   The engine with a turbocharger according to the present invention can cool the turbocharger with traveling wind introduced into the engine room from above the radiator, and is applied to an engine having a turbocharger other than a diesel engine. be able to.

実施例を示すターボ過給機付きエンジンを配設したエンジンルームの正面図である。It is a front view of an engine room in which an engine with a turbocharger according to an embodiment is arranged. 実施例を示すターボ過給機付きエンジンを配設したエンジンルームの平面図である。It is a top view of the engine room which has arranged an engine with a turbocharger which shows an example. 実施例を示すターボ過給機付きエンジンを配設したエンジンルームの右側面図である。It is a right side view of an engine room in which an engine with a turbocharger showing an embodiment is arranged. 従来例を示すターボ過給機付きエンジンを配設したエンジンルームの右側面図である。It is a right view of an engine room in which an engine with a turbocharger showing a conventional example is arranged.

符号の説明Explanation of symbols

１ 車両
６ エンジンルーム
７ アッパメンバ
８ ラジエータ
９ ターボ過給機付きエンジン
１０ エンジン本体
１７ ターボ過給機
１８ 触媒
１９ パティキュレートフィルタ
２５ 空間部
２６・２７ タンク部
２８ コア部
３３・３４ ファンシュラウド
３５・３６ 冷却ファン DESCRIPTION OF SYMBOLS 1 Vehicle 6 Engine room 7 Upper member 8 Radiator 9 Engine with a turbocharger 10 Engine main body 17 Turbocharger 18 Catalyst 19 Particulate filter 25 Space part 26/27 Tank part 28 Core part 33/34 Fan shroud 35/36 Cooling fan

Claims (3)

エンジンルームの前部にラジエータを配設するとともに前記ラジエータの車両前後方向後側にエンジン本体を配設し、このエンジン本体の車両前後方向前側にターボ過給機と触媒またはパティキュレートフィルタを車両上下方向に重ねて配設したターボ過給機付きエンジンにおいて、前記エンジンルームを車両前後方向前側から見た場合、前記ラジエータの上面とこのラジエータの上方に配設されるアッパメンバの下面との間に空間部を形成し、前記ターボ過給機を車両上下方向で前記ラジエータの上面より上方に突出する位置に配設したことを特徴とするターボ過給機付きエンジン。   A radiator is disposed at the front of the engine room, and an engine body is disposed on the rear side of the radiator in the vehicle front-rear direction. A turbocharger and a catalyst or a particulate filter are disposed on the vehicle front-rear direction front side of the engine body. When the engine room is viewed from the front side in the vehicle front-rear direction, a space is provided between the upper surface of the radiator and the lower surface of the upper member disposed above the radiator. The turbocharger-equipped engine is characterized in that the turbocharger is disposed at a position protruding above the upper surface of the radiator in the vehicle vertical direction. 前記ラジエータを、車両幅方向両側にタンク部を備えるとともに冷却水を車両幅方向に流すコア部を備えたクロスフロー型としたことを特徴とする請求項１に記載のターボ過給機付きエンジン。   2. The turbocharged engine according to claim 1, wherein the radiator is a cross-flow type having a tank portion on both sides in the vehicle width direction and a core portion for flowing cooling water in the vehicle width direction. 前記ラジエータの車両前後方向後側にファンシュラウドを介してファン径の異なる２個の冷却ファンを車両幅方向に並列に取り付け、前記ラジエータの冷却水流れ方向で上流側にファン径の大きな冷却ファンを配設するとともに下流側にファン径の小さい冷却ファンを配設し、前記ファン径の小さい冷却ファンの上方に前記ターボ過給機を配設したことを特徴とする請求項２に記載のターボ過給機付きエンジン。   Two cooling fans having different fan diameters are mounted in parallel in the vehicle width direction via a fan shroud on the rear side of the radiator in the longitudinal direction of the vehicle, and a cooling fan having a large fan diameter is provided upstream in the cooling water flow direction of the radiator. 3. The turbocharger according to claim 2, wherein a cooling fan having a small fan diameter is disposed on the downstream side, and the turbocharger is disposed above the cooling fan having the small fan diameter. Engine with a feeder.
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