JP2006258099A - Lubricating oil supply device for internal combustion engine - Google Patents

Lubricating oil supply device for internal combustion engine Download PDF

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JP2006258099A
JP2006258099A JP2006070261A JP2006070261A JP2006258099A JP 2006258099 A JP2006258099 A JP 2006258099A JP 2006070261 A JP2006070261 A JP 2006070261A JP 2006070261 A JP2006070261 A JP 2006070261A JP 2006258099 A JP2006258099 A JP 2006258099A
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oil
lubricating oil
pump
combustion engine
internal combustion
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Antonius Rehr
アントニウス・レーア
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/0037—Oilsumps with different oil compartments

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Supercharger (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lubricating oil supply device for an internal combustion engine eliminating defect of conventional technology. <P>SOLUTION: This lubricating oil supply device for an internal combustion engine includes an oil catcher case 2 arranged beneath a crank case having two structure space parts 2a, 2b for oil discharge formed thereon, a first oil pump 8 discharging lubricating oil from the first structure space part 2a and transferring the same to consuming part of the internal combustion engine such as a crankshaft bearing and a camshaft bearing, a second oil pump 10 discharging lubricating oil from the second structure space part 2b and transferring it to the first structure space part 2a, and an oil cooler for cooling lubricating oil. The oil cooler 12 is built in a lubricating oil circulation circuit of the second oil pump 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、特許請求項１の上位概念の特徴に従った内燃機関用の潤滑油供給装置に関する。   The invention relates to a lubricating oil supply device for an internal combustion engine according to the features of the superordinate concept of claim 1.

本出願人に由来する特許文献１に、クランクケースとこのクランクケースに固定されたオイル受けケースを有する内燃機関が図示及び説明されており、この内燃機関の場合、２つのポンプステップを有するオイルポンプによって第１のポンプステップを介して第１のオイル集積空間に存在する潤滑油が消費部に移送されるのに対し、第２のポンプステップを介して後の第２のオイル集積空間に存在する潤滑油が直接第１のオイル集積空間に移送される。更に特許文献１の図３から分かるように、第１のポンプステップによって消費部に移送された潤滑油は、オイルフィルタとオイルクーラによって浄化と冷却がなされる。   Patent Document 1 derived from the present applicant shows and describes an internal combustion engine having a crankcase and an oil receiving case fixed to the crankcase, and in the case of this internal combustion engine, an oil pump having two pump steps. The lubricating oil present in the first oil accumulation space is transferred to the consuming part via the first pump step, whereas it exists in the second oil accumulation space after the second pump step. Lubricating oil is transferred directly to the first oil accumulation space. Further, as can be seen from FIG. 3 of Patent Document 1, the lubricating oil transferred to the consumption unit by the first pump step is purified and cooled by an oil filter and an oil cooler.

特にオイルクーラは、特に油温が低い場合に相応の圧力低下を生じさせる油圧抵抗である。例えば油圧調整可能なカムシャフトタイミングアジャスタのような後に接続された消費部又は油圧操作可能なバルブリフト切替え装置は、十分でない油圧もしくは油量に基づいて不利な影響を受けてしまう。
独国特許出願公開第１０１ ５９ １０６号明細書 In particular, the oil cooler is a hydraulic resistance that causes a corresponding pressure drop, especially when the oil temperature is low. For example, later connected consumer parts or hydraulically operable valve lift switching devices such as hydraulically adjustable camshaft timing adjusters can be adversely affected by insufficient hydraulic pressure or oil quantity.
German Patent Application Publication No. 101 59 106

本発明の課題は、このような欠点を回避することにある。   The object of the present invention is to avoid such drawbacks.

この課題は、特許請求項１に記載された特徴によって解決される。   This problem is solved by the features described in claim 1.

本質的な油圧抵抗としてのオイルクーラを主循環回路から取り除き、後ろの第２のポンプステップに組み込むことによって、消費部への潤滑油の供給を改善することができる。主消費部の良好な潤滑油の供給以外に、量オイルポンプのスタート時の要求出力は、第２のポンプステップを介して僅かなオイルの容積流が移送される場合、相応にオイルクーラの油圧抵抗が小さいので、全体として低減させることができる。オイルの主供給循環回路からオイルクーラを取り除くことによって、主流に配設されるオイルポンプは小さく形成することができ、この場合、加圧ステップの駆動出力は、オイルクーラの圧力損失のオーダーで低減される。   By removing the oil cooler as an essential hydraulic resistance from the main circulation circuit and incorporating it in the second pump step behind it, the supply of lubricating oil to the consumer can be improved. Besides the good supply of lubricating oil in the main consumption section, the required output at the start of the quantity oil pump is correspondingly corresponding to the oil cooler's hydraulic pressure when a small volume flow of oil is transferred through the second pump step. Since the resistance is small, it can be reduced as a whole. By removing the oil cooler from the main oil supply circulation circuit, the oil pump arranged in the mainstream can be made small, and in this case, the driving output of the pressurization step is reduced in the order of the pressure loss of the oil cooler Is done.

有利なやり方で、オイルクーラは、第２のオイルポンプの吐出側に配設されている。   In an advantageous manner, the oil cooler is arranged on the discharge side of the second oil pump.

オイルクーラが、オイル／水−プレート型熱交換器として形成されている場合、実質的かつ効果的な冷却が得られる。   If the oil cooler is configured as an oil / water-plate heat exchanger, substantial and effective cooling is obtained.

両オイルポンプは、有利なやり方で２つのポンプステップを有する２重オイルポンプに統合されている。   Both oil pumps are advantageously integrated into a double oil pump with two pump steps.

排気ターボチャージャ（ＡＴＬ）の駆動機構が潤滑油を供給される排気ターボ過給の内燃機関の場合、有利なやり方で、ＡＴＬオイル排出ポンプから第１の構造空間部分に返送されるオイルは、同様にオイルクーラによって冷却してもよい。このため、ＡＴＬ排出ポンプの吐出側は、オイルクーラの上流で第２のオイルポンプの（補助）潤滑油循環回路（第２の加圧ステップ）に合流する。   If the exhaust turbocharger (ATL) drive mechanism is an exhaust turbocharged internal combustion engine supplied with lubricating oil, the oil returned from the ATL oil discharge pump to the first structural space portion in an advantageous manner is similar. It may be cooled by an oil cooler. For this reason, the discharge side of the ATL discharge pump joins the (auxiliary) lubricating oil circulation circuit (second pressurizing step) of the second oil pump upstream of the oil cooler.

本発明の十指令を、後続の説明及び図面で詳細に説明する。   The ten commands of the present invention will be described in detail in the following description and drawings.

下に向かって内燃機関のクランクケース（図示されてない）に接続し、概略的にしか図示されてない、以下でオイルパン２と呼ばれるオイル受けケースは、以下で第１及び第２のオイル集積空間と呼ばれる前後の構造空間部分２ａ及び２ｂを備える。両オイル集積空間２ａ及び２ｂのそれぞれには、吸込み側でそれぞれ１つのオイルポンプ８及び１０に接続されている吸込管４及び６が配置されている。この実施例で、両オイルポンプ８及び１０は、２つのポンプステップを有する２重オイルポンプとして統合されており、第１のポンプステップ８はコントロール可能である。後のオイル集積空間２ｂで受けられる潤滑油は、第２のポンプステップ１０によって第１のオイル集積空間２ａに圧送される。後の潤滑油循環回路には、プレート型熱交換器として形成されたオイルクーラ１２が統合されており、このオイルクーラは、潤滑油の相応の冷却を行なう。第１のポンプステップ８を介して、第１のオイル集積空間２ａに存在する潤滑油は、内燃機関の本来の消費部に供給される。この消費部には、クランクシャフト１４の主軸受、４つのカムシャフト１６用の軸受、ピストン用オイル噴射ノズル１８（４×）、両シリンダバンク列のために吸気側に設けられた油圧操作可能なカムシャフトタイミングアジャスタ２０、バルブリフトの切替えのための切替え可能なタペット２２（いわゆる Porsche VarioCamPlus-System）、吸気側及び排気側で油圧操作可能なバルブクリアランス調整要素２４が属する。油圧回路図から認められるように、両シリンダヘッドに供給される、カムシャフト１６、カムシャフトタイミングアジャスタ２０、切替え可能なタペット２２及びバルブクリアランス調整要素２４用の潤滑油は、第１の返送通路２６を介して第１のオイル集積空間２ａに返送されるのに対し、クランクシャフト１４の主軸受及びピストン用オイル噴射ノズル１８用を予定された潤滑油は、第２のオイル返送通路２８を介して後のオイル集積空間２ｂに返送されている。   An oil receiving case, hereinafter referred to as an oil pan 2, which is connected to the crankcase (not shown) of the internal combustion engine downwards and is only schematically shown, is hereinafter referred to as a first and second oil accumulation. It includes front and rear structural space portions 2a and 2b called spaces. In each of the oil accumulation spaces 2a and 2b, suction pipes 4 and 6 connected to one oil pump 8 and 10 respectively on the suction side are arranged. In this embodiment, both oil pumps 8 and 10 are integrated as a double oil pump having two pump steps, and the first pump step 8 is controllable. The lubricating oil received in the later oil accumulation space 2 b is pumped to the first oil accumulation space 2 a by the second pump step 10. An oil cooler 12 formed as a plate-type heat exchanger is integrated in the later lubricating oil circulation circuit, and this oil cooler performs corresponding cooling of the lubricating oil. Through the first pump step 8, the lubricating oil present in the first oil accumulation space 2a is supplied to the original consumption part of the internal combustion engine. In this consuming part, the main bearing of the crankshaft 14, the bearings for the four camshafts 16, the piston oil injection nozzles 18 (4 ×), and hydraulic operation provided on the intake side for both cylinder bank rows are possible. A camshaft timing adjuster 20, a switchable tappet 22 (so-called Porsche VarioCamPlus-System) for switching a valve lift, and a valve clearance adjusting element 24 that can be hydraulically operated on the intake side and the exhaust side belong. As can be seen from the hydraulic circuit diagram, the lubricating oil for the camshaft 16, camshaft timing adjuster 20, switchable tappet 22 and valve clearance adjustment element 24 supplied to both cylinder heads is in the first return passage 26. In contrast, the lubricating oil scheduled for the main bearing of the crankshaft 14 and the piston oil injection nozzle 18 is returned to the first oil accumulation space 2a through the second oil return passage 28. It is returned to the later oil accumulation space 2b.

各シリンダバンク列用に設けられた排気ターボチャージャ３０及び３２は、同様に第１の加圧ステップ８を介して駆動機構を潤滑するために潤滑油を供給される。両排気ターボチャージャ３０及び３２に供給される潤滑油を排出するため、潤滑油をいわゆるキャッチタンク３８及び４０から排出して第１のオイル集積空間２ａに返送するそれぞれ１つのオイル排出ポンプ３４及び３６が設けられている。回路図から分かるように、両ＡＴＬ排出ポンプ３４及び３６から移送される潤滑油も、オイルクーラ１２を介して相応に冷却される。このため、共通の圧力ライン４２が、第２のポンプステップ１０の圧力ライン４４に合流する。最大油圧を制限するため、第１のポンプステップ８用に、必要時に相応のバイパスライン４８を解放する安全弁４６が設けられている。消費部に供給される潤滑油を浄化するため、安全弁を有する相応のオイルフィルタ５０が設けられている。   Similarly, the exhaust turbochargers 30 and 32 provided for each cylinder bank row are supplied with lubricating oil for lubricating the drive mechanism via the first pressurizing step 8. In order to discharge the lubricating oil supplied to both exhaust turbochargers 30 and 32, one oil discharge pump 34 and 36 respectively discharges the lubricating oil from so-called catch tanks 38 and 40 and returns it to the first oil accumulation space 2a. Is provided. As can be seen from the circuit diagram, the lubricating oil transferred from both ATL discharge pumps 34 and 36 is also cooled accordingly via the oil cooler 12. For this reason, the common pressure line 42 merges with the pressure line 44 of the second pump step 10. In order to limit the maximum hydraulic pressure, a safety valve 46 is provided for the first pump step 8 which releases the corresponding bypass line 48 when necessary. In order to purify the lubricating oil supplied to the consumption part, a corresponding oil filter 50 having a safety valve is provided.

過給を受ける８気筒２列内燃機関の油圧回路を示す。The hydraulic circuit of the 8 cylinder 2 row internal combustion engine which receives supercharging is shown.

符号の説明Explanation of symbols

２ オイルパン
２ａ，２ｂ 構造空間部分
４，６ 吸込管
８，１０ オイルポンプ
１２ オイルクーラ
１４ クランクシャフト
１６ カムシャフト
１８ ピストン用オイル噴射ノズル
２０ カムシャフトタイミングアジャスタ
２２ タペット
２４ バルブクリアランス調整要素
２６ 返送通路
２８ オイル返送通路
３０，３２ 排気ターボチャージャ
３４，３６ オイル排出ポンプ
３８，４０ キャッチタンク
４２ 圧力ライン
４４ 圧力ライン
４６ 安全弁
４８ バイパスライン
５０ 安全弁 2 Oil pan 2a, 2b Structure space portion 4, 6 Suction pipe 8, 10 Oil pump 12 Oil cooler 14 Crankshaft 16 Camshaft 18 Piston oil injection nozzle 20 Camshaft timing adjuster 22 Tappet 24 Valve clearance adjustment element 26 Return passage 28 Oil return passage 30, 32 Exhaust turbocharger 34, 36 Oil discharge pump 38, 40 Catch tank 42 Pressure line 44 Pressure line 46 Safety valve 48 Bypass line 50 Safety valve

Claims (5)

オイル排出用の２つの構造空間部分（２ａ，２ｂ）が形成されている、クランクケースの下に配設されたオイル受けケース（２）と、潤滑油を第１の構造空間部分（２ａ）から排出し、例えばクランクシャフト軸受、カムシャフト軸受等のような内燃機関の消費部に移送する第１のオイルポンプ（８）と、潤滑油を第２の構造空間部分（２ｂ）から排出し、第１の構造空間部分（２ａ）に移送する第２のオイルポンプ（１０）と、潤滑油を冷却するためのオイルクーラ（１２）とを有する内燃機関用の潤滑油供給装置において、
オイルクーラ（１２）が、第２のオイルポンプ（１０）の潤滑油循環回路に組み込まれていることを特徴とする潤滑油供給装置。 An oil receiving case (2) disposed under the crankcase in which two structural space portions (2a, 2b) for oil discharge are formed, and lubricating oil from the first structural space portion (2a). A first oil pump (8) that discharges and transfers to a consumption part of an internal combustion engine such as a crankshaft bearing, a camshaft bearing, etc., and a lubricating oil is discharged from the second structural space portion (2b), In a lubricating oil supply apparatus for an internal combustion engine, which has a second oil pump (10) that is transferred to a structural space portion (2a) and an oil cooler (12) that cools the lubricating oil,
The lubricating oil supply device, wherein the oil cooler (12) is incorporated in a lubricating oil circulation circuit of the second oil pump (10). オイルクーラ（１２）が、第２のオイルポンプ（１０）の吐出側に配設されていることを特徴とする請求項１に記載の潤滑油供給装置。   The lubricating oil supply device according to claim 1, wherein the oil cooler (12) is arranged on the discharge side of the second oil pump (10). オイルクーラ（１２）が、プレート構造のオイル／水−熱交換器として形成されていることを特徴とする請求項１又は２に記載の潤滑油供給装置。   Lubricating oil supply device according to claim 1 or 2, characterized in that the oil cooler (12) is formed as an oil / water-heat exchanger with a plate structure. 両オイルポンプ（８，１０）が、２つのポンプステップを有する２重オイルポンプに統合されていることを特徴とする請求項１〜３のいずれか１つに記載の潤滑油供給装置。   Lubricating oil supply device according to any one of claims 1 to 3, characterized in that both oil pumps (8, 10) are integrated into a double oil pump having two pump steps. 排気ターボチャージャ（３０，３２）用に少なくとも１つのオイル排出ポンプ（３４，３６）が設けられており、このオイル排出ポンプが、潤滑油を排気ターボチャージャ（３０，３２）から第１の構造空間部分（２ａ）に返送し、この返送が、オイルクーラ（１２）を介して行なわれることを特徴とする請求項１〜４のいずれか１つに記載の潤滑油供給装置。   At least one oil discharge pump (34, 36) is provided for the exhaust turbocharger (30, 32), and this oil discharge pump removes lubricating oil from the exhaust turbocharger (30, 32) to the first structural space. Returning to a part (2a), this return is performed via an oil cooler (12), The lubricating oil supply apparatus as described in any one of Claims 1-4 characterized by the above-mentioned.
JP2006070261A 2005-03-16 2006-03-15 Lubricating oil supply device for internal combustion engine Pending JP2006258099A (en)

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JP7089458B2 (en) 2018-10-31 2022-06-22 株式会社クボタ Engine with supercharger

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US20060207543A1 (en) 2006-09-21
EP1703094A2 (en) 2006-09-20
EP1703094B1 (en) 2011-11-23
DE102005012073A1 (en) 2006-09-28

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