EP0456957B1 - Air suction system of a multicylinder internal combustion engine - Google Patents

Air suction system of a multicylinder internal combustion engine Download PDF

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Publication number
EP0456957B1
EP0456957B1 EP91100671A EP91100671A EP0456957B1 EP 0456957 B1 EP0456957 B1 EP 0456957B1 EP 91100671 A EP91100671 A EP 91100671A EP 91100671 A EP91100671 A EP 91100671A EP 0456957 B1 EP0456957 B1 EP 0456957B1
Authority
EP
European Patent Office
Prior art keywords
air
intake
combustion engine
intake system
internal combustion
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.)
Expired - Lifetime
Application number
EP91100671A
Other languages
German (de)
French (fr)
Other versions
EP0456957A1 (en
Inventor
Claus Brüstle
Stephan Müller
Winfried Krebs
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0456957A1 publication Critical patent/EP0456957A1/en
Application granted granted Critical
Publication of EP0456957B1 publication Critical patent/EP0456957B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/116—Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10373—Sensors for intake systems
    • F02M35/10386—Sensors for intake systems for flow rate

Definitions

  • the invention relates to an air intake system of a multi-cylinder internal combustion engine according to the preamble of claim 1.
  • An air intake system known from DE-AS 1 066 887 consists of two V-shaped intake lines. Air filters are attached to both intake lines at the front of the motor vehicle and at the ends of the V-legs. In the V-center, the intake lines unite in a mouthpiece, from which a common line leads to the carburetor of the internal combustion engine. The upper halves of the air intake lines are attached to the bonnet cover and sealed on the lower, fixed halves when the bonnet cover is closed.
  • the symmetrical design and the same dimensioning of the intake lines offer the option of arranging an air mass meter in only one of the two intake lines and indirectly measuring the total air mass flow by detecting half of the air mass flow. Any difference that may occur between the two air mass flows can be compensated in a known manner by the two lambda signals of the stereo lambda control.
  • the air intake system consists of two parallel intake lines 4, 5, two right-angled air filters 6, 7 and a downpipe 8, with the two legs 9, 10 of which the air filters 6, 7 are connected. Downstream from the downpipe 8 are an air mass meter 11, a throttle valve housing 12 and a distributor 13 to the two rows of cylinders 2, 3.
  • the two legs 9, 10 of the downpipe 8 form the middle U-web area.
  • the air filters 14, 15 are attached at the ends to the intake lines 16, 17, which are bent at right angles to the internal combustion engine and are connected to the legs 9, 10 of the downpipe 8.
  • the air mass meter 11 is inserted into an intake line 17 and measures only half the air mass flow. Since the suction lines are the same in length and cross-section, their flow resistance and thus the air mass flow are the same.
  • the signal of the air mass meter 11 is significant for the total air mass flow and the amount of fuel to be injected can be measured according to it. If, for example, different air mass flows result from pipe deposits and thus a mismatch in the injection quantity, this can be determined by the signals from the two lambda probes 18 and corrected on the control unit (not shown).
  • the exhaust system is constructed symmetrically.
  • the exhaust pipes 19, 20 leading away from the two rows of cylinders 2, 3 open into Bus lines 21, 22 into which the lambda probes 18 are inserted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Description

Die Erfindung betrifft eine Luftansauganlage einer Mehrzylinder-Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to an air intake system of a multi-cylinder internal combustion engine according to the preamble of claim 1.

Eine aus DE-AS 1 066 887 bekannte Luftansauganlage besteht aus zwei V-förmig zueinander stehenden Ansaugleitungen. Stirnseitig am Kraftfahrzeug, an den Enden der V-Schenkel sind an beiden Ansaugleitungen Luftfilter aufgesetzt. In V-Mitte vereinigen sich die Ansaugleitungen in einem Mündungsstück, von dem aus eine gemeinsame Leitung zum Vergaser der Brennkraftmaschine führt. Die oberen Hälften der Luftansaugleitungen sind am Motorhaubendeckel befestigt und bei geschlossenem Motorhaubendeckel abgedichtet auf den unteren, raumfesten Hälften aufgesetzt.An air intake system known from DE-AS 1 066 887 consists of two V-shaped intake lines. Air filters are attached to both intake lines at the front of the motor vehicle and at the ends of the V-legs. In the V-center, the intake lines unite in a mouthpiece, from which a common line leads to the carburetor of the internal combustion engine. The upper halves of the air intake lines are attached to the bonnet cover and sealed on the lower, fixed halves when the bonnet cover is closed.

Es ist die Aufgabe der Erfindung, eine aus geschlossenen Rohren bestehende Luftansauganlage so zu gestalten, daß durch sie der Anbau von Zusatzgeräten an der Brennkraftmaschine wenig behindert wird.It is the object of the invention to design an air intake system consisting of closed tubes in such a way that the attachment of additional devices to the internal combustion engine is little impeded by them.

Zur Lösung dieser Aufgabe dienen die kennzeichnenden Merkmale des Anspruchs 1.The characterizing features of claim 1 serve to achieve this object.

Da die gesamte Ansauganlage U-förmig um die Brennkraftmaschine herumgeführt ist, bleibt oberhalb und seitlich der Brennkraftmaschine genügend Freiraum für den Anbau von Zusatzgeräten. Die symmetrische Gestaltung und gleiche Bemessung der Ansaugleitungen bietet die Möglichkeit, einen Luftmassenmesser in nur einer der beiden Ansaugleitungen anzuordnen und durch die Erfassung des hälftigen Luftmassenstromes indirekt den Gesamtluftmassenstrom zu messen. Eine eventuell doch auftretende Unterschiedlichkeit der beiden Luftmassenströme kann in bekannter Weise durch die beiden Lambda--Signale der Stereo-Lambda-Regelung ausgeglichen werden.Since the entire intake system is guided in a U-shape around the internal combustion engine, there is sufficient space above and to the side of the internal combustion engine for the attachment of additional devices. The symmetrical design and the same dimensioning of the intake lines offer the option of arranging an air mass meter in only one of the two intake lines and indirectly measuring the total air mass flow by detecting half of the air mass flow. Any difference that may occur between the two air mass flows can be compensated in a known manner by the two lambda signals of the stereo lambda control.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend erläutert.An embodiment of the invention is shown in the drawing and is explained below.

Es zeigen:

Fig. 1
Draufsicht auf eine Luftansauganlage,
Fig. 2
Seitenansicht der Luftansauganlage,
Fig. 3
Draufsicht auf eine zweite Ausführungsform der Luftansauganlage,
Fig. 4
Abgasanlage mit Lambda-Sonden.
Show it:
Fig. 1
Top view of an air intake system,
Fig. 2
Side view of the air intake system,
Fig. 3
Top view of a second embodiment of the air intake system,
Fig. 4
Exhaust system with lambda probes.

Eine Mehrzylinder-Brennkraftmaschine 1 mit einer ersten Zylinderreihe 2 und einer hierzu parallelen zweiten Zylinderreihe 3 liegt mittig zwischen einer U-förmig gestalteten Luftansauganlage. Die Luftansauganlage besteht aus zwei parallelen Ansaugleitungen 4, 5, zwei rechtwinklig abgekrümmten Luftfiltern 6, 7 und einem Hosenrohr 8, mit dessen beiden Schenkeln 9, 10 die Luftfilter 6, 7 verbunden sind. Stromab hinter dem Hosenrohr 8 liegen ein Luftmassenmesser 11, ein Drosselklappengehäuse 12 und ein Verteilerstück 13 zu den beiden Zylinderreihen 2, 3. Die beiden Schenkel 9, 10 des Hosenrohrs 8 bilden den mittleren U-Steg-Bereich.A multi-cylinder internal combustion engine 1 with a first row of cylinders 2 and a second row of cylinders 3 parallel to it lies centrally between an U-shaped air intake system. The air intake system consists of two parallel intake lines 4, 5, two right-angled air filters 6, 7 and a downpipe 8, with the two legs 9, 10 of which the air filters 6, 7 are connected. Downstream from the downpipe 8 are an air mass meter 11, a throttle valve housing 12 and a distributor 13 to the two rows of cylinders 2, 3. The two legs 9, 10 of the downpipe 8 form the middle U-web area.

In einer abgewandelten Ausführungsform der Erfindung nach Fig. 3 sind die Luftfilter 14, 15 endseitig an den Ansaugleitungen 16, 17 befestigt, die rechtwinklig zur Brennkraftmaschine hin abgekrümmt und an die Schenkel 9, 10 des Hosenrohrs 8 angeschlossen sind. Bei dieser Luftansauganlage ist der Luftmassenmesser 11 in die eine Ansaugleitung 17 eingesetzt und mißt nur den halben Luftmassenstrom. Da die Ansaugleitungen in Länge und Querschnitt gleich sind, ist ihr Strömungswiderstand und somit der Luftmassenstrom gleich. Das Signal des Luftmassenmessers 11 ist signifikant für den Gesamtluftmassenstrom und nach ihm kann die einzuspritzende Kraftstoffmenge bemessen werden. Sollten sich doch beispielsweise durch Rohrablagerungen unterschiedliche Luftmassenströme und somit eine Fehlanpassung der Einspritzmenge ergeben, so kann das durch die Signale der beiden Lambda-Sonden 18 festgestellt und an dem nicht gezeichneten Steuergerät korrigiert werden.In a modified embodiment of the invention according to FIG. 3, the air filters 14, 15 are attached at the ends to the intake lines 16, 17, which are bent at right angles to the internal combustion engine and are connected to the legs 9, 10 of the downpipe 8. In this air intake system, the air mass meter 11 is inserted into an intake line 17 and measures only half the air mass flow. Since the suction lines are the same in length and cross-section, their flow resistance and thus the air mass flow are the same. The signal of the air mass meter 11 is significant for the total air mass flow and the amount of fuel to be injected can be measured according to it. If, for example, different air mass flows result from pipe deposits and thus a mismatch in the injection quantity, this can be determined by the signals from the two lambda probes 18 and corrected on the control unit (not shown).

Wie Fig. 4 zeigt, ist auch die Abgasanlage symmetrisch aufgebaut. Die von den beiden Zylinderreihen 2, 3 wegführenden Abgasrohre 19, 20 münden in Sammelleitungen 21, 22 ein, in die die Lambda-Sonden 18 eingesetzt sind. Hinter den Lambda-Sonden 18 vereinigen sich die Sammelleitungen 21, 22 in einer gemeinsamen Abgasleitung 23, die einen Katalysator 24 und einen Schalldämpfer 25 enthält.4 shows, the exhaust system is constructed symmetrically. The exhaust pipes 19, 20 leading away from the two rows of cylinders 2, 3 open into Bus lines 21, 22 into which the lambda probes 18 are inserted. Behind the lambda probes 18, the manifolds 21, 22 unite in a common exhaust line 23, which contains a catalytic converter 24 and a silencer 25.

Claims (6)

  1. An air-intake system of a multiple-cylinder internal-combustion engine, having two rows of cylinders parallel to each other, the intake air being supplied to the internal-combustion engine by way of two intake ducts, each of which contains an air filter, characterized in that the intake system surrounds the internal-combustion engine (1) in a U-shaped manner and is attached in the region of the web of the U to a junction pipe (8) from which the intake air flows into a butterfly-valve casing (12) and is uniformly distributed downstream to the two rows (2, 3) of cylinders.
  2. An air-intake system according to Claim 1, characterized in that the intake ducts (4, 5) and (16, 17) respectively are designed in a similar manner and have equal dimensions.
  3. An air-intake system according to Claims 1 and 2, characterized in that the intake ducts (4, 5) and (16, 17) respectively are arranged symmetrically to the central butterfly-valve casing (12).
  4. An air-intake system according to Claims 1 and 2, characterized in that an air-mass meter (11) is inserted between the junction pipe (8) and the butterfly-valve casing (12).
  5. An air-intake system according to Claims 1 and 2, characterized in that the air-mass meter (11) is inserted in one intake duct (17) downstream of one air filter (15 ).
  6. An air-intake system according to Claim 4, characterized in that the air filters (6, 7) are constructed from a bend and are connected to the junction pipe (8).
EP91100671A 1990-05-14 1991-01-21 Air suction system of a multicylinder internal combustion engine Expired - Lifetime EP0456957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015426A DE4015426A1 (en) 1990-05-14 1990-05-14 AIR INTAKE SYSTEM OF A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
DE4015426 1990-05-14

Publications (2)

Publication Number Publication Date
EP0456957A1 EP0456957A1 (en) 1991-11-21
EP0456957B1 true EP0456957B1 (en) 1993-04-14

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Family Applications (1)

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EP91100671A Expired - Lifetime EP0456957B1 (en) 1990-05-14 1991-01-21 Air suction system of a multicylinder internal combustion engine

Country Status (2)

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EP (1) EP0456957B1 (en)
DE (2) DE4015426A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7069894B2 (en) 2004-04-24 2006-07-04 Mann & Hummel Gmbh Intake manifold having intake pipes linked by transverse acoustic synchronization channels with exhaust gas recirculation inlets

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802074A1 (en) * 1998-01-21 1999-07-22 Volkswagen Ag Intake module for an internal combustion engine
DE10043532B4 (en) 2000-09-05 2010-11-04 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Air filter device for a multi-cylinder internal combustion engine
DE10123492B4 (en) * 2001-05-15 2005-06-30 Dr.Ing.H.C. F. Porsche Ag Intake device for an internal combustion engine
JP5856859B2 (en) * 2012-02-02 2016-02-10 本田技研工業株式会社 Intake device for saddle-ride type vehicles
US9677517B2 (en) * 2015-05-01 2017-06-13 Fca Us Llc Dual path cool air inlet system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066887B (en) *
DE1235065B (en) * 1964-03-27 1967-02-23 Tatra Np Arrangement of the intake pipe for internal combustion engines with two rows of cylinders arranged in a V shape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7069894B2 (en) 2004-04-24 2006-07-04 Mann & Hummel Gmbh Intake manifold having intake pipes linked by transverse acoustic synchronization channels with exhaust gas recirculation inlets

Also Published As

Publication number Publication date
DE59100078D1 (en) 1993-05-19
EP0456957A1 (en) 1991-11-21
DE4015426A1 (en) 1991-11-21

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