DE3641273A1 - Intake pipe arrangement for a diesel engine - Google Patents

Intake pipe arrangement for a diesel engine

Info

Publication number
DE3641273A1
DE3641273A1 DE19863641273 DE3641273A DE3641273A1 DE 3641273 A1 DE3641273 A1 DE 3641273A1 DE 19863641273 DE19863641273 DE 19863641273 DE 3641273 A DE3641273 A DE 3641273A DE 3641273 A1 DE3641273 A1 DE 3641273A1
Authority
DE
Germany
Prior art keywords
throttle
intake manifold
intake pipe
diesel engine
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19863641273
Other languages
German (de)
Other versions
DE3641273C2 (en
Inventor
Hermann Dr Ing Krueger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Priority to DE3641273A priority Critical patent/DE3641273C2/en
Publication of DE3641273A1 publication Critical patent/DE3641273A1/en
Application granted granted Critical
Publication of DE3641273C2 publication Critical patent/DE3641273C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/042—Combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/1055—Details of the valve housing having a fluid by-pass
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0279—Throttle valve control for intake system with two parallel air flow paths, each controlled by a throttle, e.g. a resilient flap disposed on a throttle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D2041/0022—Controlling intake air for diesel engines by throttle control
    • 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

In a diesel engine (1), in the intake pipe (2) of which a throttle (3), adjustable as a function of an engine parameter, is arranged for reducing the degree of irregularity of the engine in the idling or partial load range, a bypass (4) to the throttle is provided, the flow cross-section of which at least remains constant, but preferably increases with the increasing throttle effect of the throttle (3), in order to ensure the excess air supply necessary for proper combustion in idling or partial load operation. <IMAGE>

Description

Die Erfindung betrifft eine Saugrohranordnung gemäß dem Oberbegriff des Patentanspruchs 1, wie sie beispielsweise aus Bussien, "Automobiltechnisches Handbuch", 17. Auflage, 2. Band, Seite 416, bekannt ist. Derartige Leerlauf- oder Teillastdrosseln haben die Aufgabe, im Leerlast- oder Teillastbetrieb die zugeführte Luftmenge zu drosseln, um die Gasdrücke im Brennraum und damit den Ungleichförmigkeitsgrad der Maschine zu verringern. Wegen des geringeren Luftüberschusses und der Verminderung des Dralls kann diese Maßnahme jedoch zu mangelhafter Verbrennung führen.The invention relates to an intake manifold arrangement according to the preamble of the claim 1, as for example from Bussien, "Automobiltechnisches Handbuch", 17th edition, Volume 2, page 416, is known. Such idle or partial load chokes have the task of throttling the amount of air supplied in no-load or part-load operation, the gas pressures in the combustion chamber and thus the degree of non-uniformity of the machine to reduce. Because of the lower air excess and the reduction of swirl However, this measure can lead to poor combustion.

Der Erfindung liegt die Aufgabe zugrunde, eine Saugrohranordnung gemäß dem Oberbegriff des Patentanspruchs 1 zu schaffen, die mit geringem konstruktiven Aufwand einen für eine einwandfreie Verbrennung geeigneten Luftüberschuß und einen ausreichenden Drall auch dann sicherstellt, wenn im Leerlauf oder Teillastbetrieb die zugeführte Luftmenge weitgehend gedrosselt ist.The invention has for its object a suction pipe arrangement according to the preamble of claim 1 to create a with little design effort Adequate air excess and sufficient air for proper combustion Swirl ensures even when the supplied in idle or part-load operation Air volume is largely throttled.

Die erfindungsgemäße Lösung dieser Aufgabe besteht in den kennzeichnenden Merkmalen des Patentanspruchs 1, vorteilhafte Ausgestaltungen der Erfindung beschreiben die Unteransprüche.The achievement of this task consists in the characteristic features of claim 1, advantageous embodiments of the invention describe the Subclaims.

Die Erfindung nutzt in vorteilhafter Weise die ohnehin im Abgas, im Kühlwasser oder im Schmieröl der Maschine anfallende Abwärme derselben zur Vorwärmung der Verbrennungsluft aus, wobei sich die vorgeheizte Luftmenge umso stärker bemerkbar macht, je mehr die Drossel im Saugrohr in ihre Schließstellung bewegt ist.The invention advantageously uses the anyway in the exhaust gas, in the cooling water or Waste heat generated in the lubricating oil of the machine for preheating the combustion air off, whereby the preheated air volume is even more noticeable, the more the throttle in the intake manifold is moved into its closed position.

Dies unterscheidet die Erfindung grundsätzlich von Saugrohranordnungen für Vergaser- Brennkraftmaschinen, die zwecks Verringerung schädlicher Abgasbestandteile mit einer beispielsweise von den Abgasen der Brennkraftmaschine beheizten Sekundärluftleitung versehen sind, da hier durch ein sogenanntes Luftsteuerventil umso mehr beheizte Luft zugeführt wird, je weiter die übliche Vergaserdrossel geöffnet ist. Derartige, beispielsweise aus der DE-OS 33 16 474, FO2M 23/14, bekannte Anordnungen arbeiten also so, daß dann, wenn der Saugunterdruck im Saugrohr sein Maximum erreicht (Verzögerung der Maschine) die Zufuhr an erwärmter Sekundärluft auf ein Minimum oder auf Null reduziert wird. Demgegenüber erfolgt bei der Erfindung keine Verringerung des Strömungsquerschnitts in dem beispielsweise als Bypass zur Saugrohrdrossel ausgeführten Luftkanal mit zunehmender Drosselwirkung dieser Drossel, sondern gemäß Patentanspruch 2 sogar eine Vergrößerung dieses Strömungsquerschnitts.This distinguishes the invention fundamentally from intake manifold arrangements for carburetor Internal combustion engines used to reduce harmful exhaust gas components  for example, the secondary air line heated by the exhaust gases of the internal combustion engine are provided, since the so-called air control valve makes them all the more heated Air is supplied the further the usual carburetor throttle is open. Such, known arrangements work for example from DE-OS 33 16 474, FO2M 23/14 So that when the suction vacuum in the intake pipe reaches its maximum (delay the supply of heated secondary air to a minimum or is reduced to zero. In contrast, there is no reduction in the invention of the flow cross section in the, for example, a bypass to the intake manifold throttle Air duct with increasing throttling effect of this throttle, but according to claim 2 even an enlargement of this flow cross section.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnung erläutert.An embodiment of the invention is explained below with reference to the drawing.

Die Verbrennungsluft wird der bei 1 schematisch angedeuteten, da einen bekannten Aufbau besitzenden Dieselmaschine über das Saugrohr 2 zugeführt, in dem die in Abhängigkeit von einem Parameter der Maschine, beispielsweise der Last, der Drehzahl oder der Temperatur, verstellte Drossel 3 angeordnet ist. Im Zuge der zugeführten Luft liegt ferner der hier als Bypass zur Drossel 3 ausgeführte Luftkanal 4, der mit seinem Bereich 5 innerhalb der Abgasleitung 6 der Maschine 1 verläuft, so daß die in ihm strömende Luft aufgeheizt wird. Auf der gleichen Antriebswelle 7 wir die Drossel 3 ist ferner die im Bypass 4 befindliche weitere Drossel 8 angeordnet und zwar so, daß sie mit zunehmender Bewegung der Drossel 3 in Schließrichtung weiter geöffnet wird, also der Strömungsquerschnitt im Bypass 4 gegensinnig zum Strömungsquerschnitt im eigentlichen Saugrohr 2 geändert wird. Dadurch wird unter Ausnutzung der Vorteile der Drossel 3 (Verringerung des Ungleichförmigkeitsgrads der Maschine im Leerlast- oder Teillastbetrieb) einer Verringerung des Luftüberschusses und des Dralls unter die zu einer einwandfreien Verbrennung erforderlichen Werte entgegengewirkt.The combustion air is fed to the diesel engine schematically indicated at 1 , since it has a known structure, via the intake manifold 2 , in which the throttle 3, which is adjusted as a function of a parameter of the engine, for example the load, the speed or the temperature, is arranged. In the course of the supplied air, there is also the air duct 4 , which is designed here as a bypass to the throttle 3 and runs with its region 5 within the exhaust line 6 of the engine 1 , so that the air flowing therein is heated. On the same drive shaft 7 we the throttle 3 , the further throttle 8 located in the bypass 4 is further arranged such that it is opened further with increasing movement of the throttle 3 in the closing direction, i.e. the flow cross section in the bypass 4 in the opposite direction to the flow cross section in the actual intake manifold 2 is changed. This takes advantage of the benefits of throttle 3 (reducing the degree of non-uniformity of the machine in no-load or part-load operation) to counteract a reduction in excess air and swirl below the values required for perfect combustion.

Claims (3)

1. Saugrohranordnung für eine Dieselmaschine mit einer im Saugrohr angeordneten, in Abhängigkeit von einem Betriebsparameter der Maschine verstellbaren Drossel, dadurch gekennzeichnet, daß ein durch Maschinenabwärme beheizbarer, in Strömungsrichtung hinter der Drossel (3) in das Saugrohr (2) einmündender Luftkanal (4) vorgesehen ist, dessen Strömungsquerschnitt mit zunehmender Drosselwirkung der Drossel (3) zumindest konstant bleibt.1. Intake manifold arrangement for a diesel engine with a throttle arranged in the intake manifold and adjustable as a function of an operating parameter of the machine, characterized in that an air duct ( 4 ) which can be heated by machine waste heat and flows in the flow direction behind the throttle ( 3 ) into the intake manifold ( 2 ). is provided, the flow cross section of which remains at least constant with increasing throttling action of the throttle ( 3 ). 2. Saugrohranordnung nach Anspruch 1, dadurch gekennzeichnet, daß im Luftkanal (4) eine weitere Drossel (8) angeordnet ist, die gegensinnig zur Drossel (3) im Saugrohr (2) verstellbar ist.2. Intake manifold arrangement according to claim 1, characterized in that a further throttle ( 8 ) is arranged in the air duct ( 4 ), which is adjustable in the opposite direction to the throttle ( 3 ) in the intake manifold ( 2 ). 3. Saugrohr nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Luftkanal als Bypass (4) zur Drossel (3) im Saugrohr (2) ausgebildet ist.3. Intake pipe according to claim 1 or 2, characterized in that the air channel is designed as a bypass ( 4 ) to the throttle ( 3 ) in the intake pipe ( 2 ).
DE3641273A 1985-12-12 1986-12-03 Intake manifold assembly for a diesel engine Expired - Fee Related DE3641273C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3641273A DE3641273C2 (en) 1985-12-12 1986-12-03 Intake manifold assembly for a diesel engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3543814 1985-12-12
DE3641273A DE3641273C2 (en) 1985-12-12 1986-12-03 Intake manifold assembly for a diesel engine

Publications (2)

Publication Number Publication Date
DE3641273A1 true DE3641273A1 (en) 1987-06-19
DE3641273C2 DE3641273C2 (en) 1994-12-08

Family

ID=6288206

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3641273A Expired - Fee Related DE3641273C2 (en) 1985-12-12 1986-12-03 Intake manifold assembly for a diesel engine

Country Status (1)

Country Link
DE (1) DE3641273C2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609674A2 (en) * 1993-02-03 1994-08-10 Nartron Corporation Induction air driven alternator and method for converting intake air energy into electrical energy
US5559379A (en) * 1993-02-03 1996-09-24 Nartron Corporation Induction air driven alternator and method for converting intake air into current
WO1997011268A1 (en) * 1995-09-20 1997-03-27 Johannes Gehling Control device for a diesel-operated internal-combustion engine and oil-heating system
EP0848154A3 (en) * 1996-12-12 1999-03-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Combustion engine with controlled cylinder charge with an auxiliary air admission system
US6158417A (en) * 1999-03-01 2000-12-12 Visteon Global Technologies, Inc. Throttle body accomodation of either an idle air control valve or a motorized throttle control
WO2004072457A1 (en) 2003-02-15 2004-08-26 Volkswagen Aktiengesellschaft Direct injecting internal combustion engine and method for the operation thereof
FR2939487A1 (en) * 2008-12-05 2010-06-11 Renault Sas Gaseous fluid pipe i.e. air intake pipe, winnowing device for petrol engine in automobile, has control device driving auxiliary flap between closed position and open position when main flap is in its closed position
CN103047029A (en) * 2011-10-12 2013-04-17 福特环球技术公司 Methods and systems for an engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301319A1 (en) * 1982-01-18 1983-07-28 Toyota Jidosha K.K., Toyota, Aichi THROTTLE DEVICE FOR SUCTION AIR IN A DIESEL ENGINE
DE3316471A1 (en) * 1982-12-17 1984-06-20 Nissin Jabara Industries Co., Ltd., Amagasaki, Hyogo Exhaust gas suppressor for internal combustion engines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301319A1 (en) * 1982-01-18 1983-07-28 Toyota Jidosha K.K., Toyota, Aichi THROTTLE DEVICE FOR SUCTION AIR IN A DIESEL ENGINE
DE3316471A1 (en) * 1982-12-17 1984-06-20 Nissin Jabara Industries Co., Ltd., Amagasaki, Hyogo Exhaust gas suppressor for internal combustion engines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609674A2 (en) * 1993-02-03 1994-08-10 Nartron Corporation Induction air driven alternator and method for converting intake air energy into electrical energy
EP0609674A3 (en) * 1993-02-03 1994-10-19 Nartron Corp Induction air driven alternator and method for converting intake air energy into electrical energy.
US5559379A (en) * 1993-02-03 1996-09-24 Nartron Corporation Induction air driven alternator and method for converting intake air into current
WO1997011268A1 (en) * 1995-09-20 1997-03-27 Johannes Gehling Control device for a diesel-operated internal-combustion engine and oil-heating system
EP0848154A3 (en) * 1996-12-12 1999-03-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Combustion engine with controlled cylinder charge with an auxiliary air admission system
US6158417A (en) * 1999-03-01 2000-12-12 Visteon Global Technologies, Inc. Throttle body accomodation of either an idle air control valve or a motorized throttle control
WO2004072457A1 (en) 2003-02-15 2004-08-26 Volkswagen Aktiengesellschaft Direct injecting internal combustion engine and method for the operation thereof
FR2939487A1 (en) * 2008-12-05 2010-06-11 Renault Sas Gaseous fluid pipe i.e. air intake pipe, winnowing device for petrol engine in automobile, has control device driving auxiliary flap between closed position and open position when main flap is in its closed position
CN103047029A (en) * 2011-10-12 2013-04-17 福特环球技术公司 Methods and systems for an engine

Also Published As

Publication number Publication date
DE3641273C2 (en) 1994-12-08

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D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee