EP0695861B1 - Moteur à combustion interne avec au moins un cylindre pouvant fonctionner de facon intermittente sans être allimenté - Google Patents

Moteur à combustion interne avec au moins un cylindre pouvant fonctionner de facon intermittente sans être allimenté Download PDF

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Publication number
EP0695861B1
EP0695861B1 EP95108115A EP95108115A EP0695861B1 EP 0695861 B1 EP0695861 B1 EP 0695861B1 EP 95108115 A EP95108115 A EP 95108115A EP 95108115 A EP95108115 A EP 95108115A EP 0695861 B1 EP0695861 B1 EP 0695861B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
cylinder
cylinders
fresh gas
fired
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
EP95108115A
Other languages
German (de)
English (en)
Other versions
EP0695861A1 (fr
Inventor
Jan Velthuis
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0695861A1 publication Critical patent/EP0695861A1/fr
Application granted granted Critical
Publication of EP0695861B1 publication Critical patent/EP0695861B1/fr
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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/02—Cutting-out
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/02—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by cutting out a part of engine cylinders

Definitions

  • the invention relates to an internal combustion engine, in particular a reciprocating piston internal combustion engine, with multiple cylinders, at least one of which can be operated at times without fire to the exhaust gas of the fired cylinder Add fresh gas, several of which are located on the outlet channels in the Internal combustion engine cylinder head connecting cylinder-specific exhaust pipes are merged.
  • the object of the present invention is to provide a remedial measure for this problem.
  • a fresh gas line which is provided in addition to the associated exhaust gas line merged with the other exhaust gas lines, branches off from the outlet channel or from the exhaust gas line near the exhaust channel of the cylinder, which can be operated at times without firing, at least one other in the exhaust channel or in the exhaust gas line near the exhaust channel fired cylinder opens.
  • this is from the non-fired cylinder in the exhaust system the fresh gas pumped to the internal combustion engine is not alone the exhaust pipe of this cylinder continues to the exhaust gas flow of the rest fired cylinder, but can be directly on the proposed additionally provided fresh gas line as close as possible to the outlet valve or led to the exhaust valves of the still fired cylinders become.
  • the fresh gas line is in or near of the exhaust port of the cylinder that opens in the firing order Internal combustion engine on the temporarily unfired cylinder follows. This ensures that directly downstream of the exhaust valve of the fired cylinder fresh gas is available if this Exhaust valve opens. At the same time, this ensures that the fresh gas line actually fresh gas into the exhaust port of a fired cylinder can arrive, because with this vote described in the individual Exhaust pipes prevailing pressure conditions are such that Fresh gas from the unfired cylinder through the fresh gas line in the exhaust pipe of a fired cylinder can flow.
  • the opening of the fresh gas line in the Area of the always fired cylinder preferably the exhaust valve facing away from that cylinder to make sure that the pre-exhaust blow is essentially without negative influence remains.
  • Fresh gas line can be divided into several lines branch and then in the exhaust pipes or exhaust ducts several cylinders open. This allows the cylinders that act as an air pump and are not fired several other cylinders still fired on the exhaust side supply with fresh gas. On the other hand, if it is temporarily not fired operable cylinder fired itself, so it can it may be advisable to take measures to prevent that its exhaust gas via the fresh gas line in the Exhaust pipes of the other cylinder arrives. Such Measure can be provided in the fresh gas line, switchable check valve.
  • each in the exhaust pipes of three cylinders are combined.
  • the exhaust pipes 11, 12, 13 of the cylinders with the numbers 1, 2, 3 form the first exhaust manifold 20, the Exhaust pipes 14, 15, 16 are to the second exhaust manifold 21 summarized.
  • Each of the exhaust pipes closes 11 to 16 on the assigned, cylinder-specific, Exhaust port 21-26 provided in the cylinder head 10 cylinder 1 to 6.
  • every outlet channel 21 - 26 towards the cylinder combustion chamber not shown limited by an outlet valve 31-36.
  • Cylinder No. 2 and Cylinder No. 5 are temporary operable without fire, these cylinders over a suction system, not shown, however, still fresh gas suck in and expel in the outlet channels 22, 25, so that the exhaust gas flow of the still fired cylinder no. 1, 3, 4, 6 fresh gas is added. In this exhaust gas stream an afterburn can be caused. However, since that is from the non-fired cylinders No. 2, 5 fresh gas ejected as close as possible the exhaust valves of the still fired cylinders and especially near the exhaust valves 33, 34 which continue fired cylinders No. 3, 4 added to their exhaust gas flow there are two fresh gas lines 17, 18 intended.
  • the fresh gas line 17 protrudes with the at times unfired Cylinder 2 facing end in the exhaust port 22 into, the corresponding opening 19 ' aligned with the outlet valve 32 of this cylinder 2 is, d. H. the mouth opening 19 'is this outlet valve 32 facing. In the same way, this applies to the Mouth opening 19 'of the fresh gas line 18, which is in the outlet channel 25 of the other temporarily operable without fire Cylinder No. 5 lies.
  • the orifices opposite the orifices 19 ' 19 '' of the two fresh gas lines 17, 18, those in the exhaust pipes 13, 14 of the always fired cylinders Nos. 3, 4 are the exhaust valves 33, 34 facing away from these cylinders 3, 4, d. H. from the exhaust valves 33, 34 directed away. With the described Orientation / alignment of the mouth openings 19 ', 19' ' the two fresh gas lines 17, 18 are optimal Flow conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (7)

  1. Moteur à combustion interne à plusieurs cylindres (1 à 6), parmi lesquels on peut faire fonctionner l'un au moins (2, 5) de façon intermittente, sans le mettre à feu, pour ajouter aux gaz d'échappement des cylindres qui sont mis à feu (1, 3, 4, 6) des gaz frais, en réunissant plusieurs des conduites de gaz d'échappement (11 à 16) propres à chaque cylindre qui se raccordent aux canaux de sortie (21 à 26) dans la culasse 10 du moteur à combustion interne,
    caractérisé en ce qu'
    à partir du canal de sortie (22, 25) ou de la conduite des gaz d'échappement (12, 15) à proximité du canal de sortie (22, 25) du cylindre que l'on fait fonctionner de façon intermittente sans le mettre à feu, on fait dériver une conduite de gaz frais (17, 18), prévue en plus de la conduite de gaz d'échappement (12, 15) correspondante, réunie aux autres conduites de gaz d'échappement (11, 13, 14, 16), conduite de gaz frais (17, 18) qui débouche dans le canal de sortie(23, 24) ou dans la conduite de gaz d'échappement (13, 14) à proximité du canal de sortie (23, 24) d'au moins un autre cylindre (3, 4) mis à feu.
  2. Moteur à combustion interne selon la revendication 1,
    caractérisé en ce que
    la conduite de gaz frais (17, 18) débouche dans le ou à proximité du canal de sortie (23, 24) du cylindre (3, 4), qui fait suite, dans l'ordre d'allumage du moteur à combustion interne, au cylindre (2, 5) que l'on peut faire fonctionner de façon intermittente sans le mettre à feu.
  3. Moteur à combustion interne selon la revendication 1 ou 2,
    caractérisé en ce que
    la conduite de gaz frais (17, 18) est orientée dans la zone du cylindre (2, 5) que l'on peut faire fonctionner de façon intermittente sans le mettre à feu, avec son embouchure (19') en direction de la soupape d'échappement (32, 35) de ce cylindre (2, 5).
  4. Moteur à combustion interne selon l'une des revendications précédentes,
    caractérisé en ce que
    la conduite de gaz frais (17, 18) est, dans la zone du cylindre (3, 4) qui est mis à feu en permanence, tournée par son embouchure (19") à l'opposé de la soupape d'échappement (33, 34) de ce cylindre (3, 4).
  5. Moteur à combustion interne selon l'une des revendications précédentes,
    caractérisé en ce que
    la conduite de gaz frais (17, 18), qui sort du cylindre (2, 5), que l'on peut faire fonctionner de façon intermittente, sans le mettre à feu, est constituée de façon à se ramifier et débouche dans les conduites de gaz d'échappement ou dans les canaux de sortie de plusieurs cylindres.
  6. Moteur à combustion interne selon l'une des revendications précédentes,
    caractérisé en ce qu'
    on prévoit dans la conduite de gaz frais (17, 18) une vanne d'obturation.
  7. Moteur à combustion interne, en particulier moteur à combustion interne à six cylindres (1 à 6) en ligne, selon l'une des revendications précédentes, dans lequel les conduites des gaz d'échappement (11, 12, 13) des trois premiers cylindres (n° 1 à 3), ainsi que les conduites des gaz d'échappement (14, 15, 16)) des trois autres cylindres (n° 4 à 6)sont réunies dans une pipe d'échappement (20, 21) et l'ordre d'allumage est 1-5-3-6-2-4,
    caractérisé en ce qu'
    on peut faire fonctionner les cylindres n° 2 et 5 de façon intermittente sans les mettre à feu, et
    la conduite de gaz frais (17), qui est associée au cylindre n° 2, mène au cylindre n° 4, et la conduite de gaz frais (18), associée au cylindre n° 5 mène au cylindre n° 3.
EP95108115A 1994-08-01 1995-05-27 Moteur à combustion interne avec au moins un cylindre pouvant fonctionner de facon intermittente sans être allimenté Expired - Lifetime EP0695861B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4427214 1994-08-01
DE4427214A DE4427214A1 (de) 1994-08-01 1994-08-01 Brennkraftmaschine mit zumindest einem zeitweise unbefeuert betreibbaren Zylinder

Publications (2)

Publication Number Publication Date
EP0695861A1 EP0695861A1 (fr) 1996-02-07
EP0695861B1 true EP0695861B1 (fr) 1999-01-13

Family

ID=6524653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108115A Expired - Lifetime EP0695861B1 (fr) 1994-08-01 1995-05-27 Moteur à combustion interne avec au moins un cylindre pouvant fonctionner de facon intermittente sans être allimenté

Country Status (2)

Country Link
EP (1) EP0695861B1 (fr)
DE (2) DE4427214A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115406B3 (de) 2021-06-15 2022-08-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbrennungskraftmaschine umfassend eine Sekundärlufteinrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2163537A1 (de) 1971-12-21 1973-07-12 Volkswagenwerk Ag Verfahren zum aufheizen von abgasreinigungsanlagen
US4075837A (en) * 1975-06-18 1978-02-28 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas purifying system for an internal combustion engine
JPS59211709A (ja) * 1983-05-17 1984-11-30 Nissan Motor Co Ltd 燃料噴射式多気筒内燃機関の排気微粒子処理装置
DE3723703A1 (de) * 1986-01-22 1989-01-26 Kloeckner Humboldt Deutz Ag Brennkraftmaschine mit zumindest einem russfilter
DE4029672A1 (de) * 1990-09-19 1992-04-02 Daimler Benz Ag Mehrzylindrige brennkraftmaschine

Also Published As

Publication number Publication date
EP0695861A1 (fr) 1996-02-07
DE4427214A1 (de) 1996-02-08
DE59504789D1 (de) 1999-02-25

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