EP1957785B1 - Recirculation de gaz d'echappement dans un moteur a combustion interne refroidi par air - Google Patents

Recirculation de gaz d'echappement dans un moteur a combustion interne refroidi par air Download PDF

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Publication number
EP1957785B1
EP1957785B1 EP06829229A EP06829229A EP1957785B1 EP 1957785 B1 EP1957785 B1 EP 1957785B1 EP 06829229 A EP06829229 A EP 06829229A EP 06829229 A EP06829229 A EP 06829229A EP 1957785 B1 EP1957785 B1 EP 1957785B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
gas
gas recirculation
internal combustion
combustion engine
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.)
Not-in-force
Application number
EP06829229A
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German (de)
English (en)
Other versions
EP1957785A1 (fr
Inventor
Alfons Bleffert
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.)
Deutz AG
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Deutz AG
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Publication date
Application filed by Deutz AG filed Critical Deutz AG
Publication of EP1957785A1 publication Critical patent/EP1957785A1/fr
Application granted granted Critical
Publication of EP1957785B1 publication Critical patent/EP1957785B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/27—Layout, e.g. schematics with air-cooled heat exchangers
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine

Definitions

  • the invention relates to an internal combustion engine with a crankcase and a cylinder of the crankcase covering cylinder head into which a fresh gas duct and an exhaust duct are inserted, which open on a cylinder head longitudinal side and which are each connected to a fresh gas line and an exhaust manifold, and wherein an exhaust gas recirculation system consisting from an exhaust gas recirculation line and a control valve, is present.
  • Such an internal combustion engine is from the DE 693 00 649 T2 known.
  • This internal combustion engine has a cylinder head, in which the fresh gas ducts and the exhaust ducts of the individual cylinders open on a cylinder head longitudinal side of the cylinder head designed as a block cylinder head.
  • the exhaust manifold has a special connection for attaching the exhaust gas recirculation system, in particular a control valve for controlling the amount of recirculated exhaust gas on.
  • a special component called a ramp is inserted between them and the fresh gas manifold.
  • a disadvantage of this design is that the exhaust manifold must be changed and the height of the internal combustion engine is increased by the insertion of the ramp.
  • the control valve protrudes beyond the given lateral contour of the internal combustion engine. Cooling of the recirculated exhaust gas is not provided and impeded by the immediate proximity to the hot exhaust manifold during operation.
  • the invention has for its object to provide an internal combustion engine with an exhaust gas recirculation system, in which the exhaust gas recirculation system is unaffected by the hot exhaust manifold during operation.
  • the exhaust gas recirculation system is disposed on the cylinder head side opposite the fresh gas line and the exhaust manifold.
  • the cylinder head is preferably a single cylinder head, which is screwed together with the associated cylinder on the crankcase.
  • the invention is also applicable to a block cylinder head and cylinders made in one piece with the crankcase.
  • the channels whose cross-section relative to the aforementioned gas channels can be dimensioned considerably smaller, can be arranged at a suitable location in the cylinder head and be poured in the production of the cylinder head with or subsequently introduced by mechanical machining.
  • these channels are subsequently incorporated by mechanical processing in the cylinder head, so that the cylinder head blank for an engine version with or without exhaust gas recirculation can be the same.
  • an exhaust gas recirculation system consisting of an exhaust gas recirculation manifold, an exhaust gas recirculation control valve and a Abgas Weg lecturverteil effet, easy attachable.
  • an exhaust gas recirculation system consisting of an exhaust gas recirculation manifold, an exhaust gas recirculation control valve and a Abgas Weg lecturverteil effet, easy attachable.
  • the exhaust manifold can remain unchanged compared to a version without exhaust gas recirculation. This is particularly advantageous in particular when different types of exhaust manifolds with, for example, different connections for the continuation of the exhaust gases are provided for different purposes and customer requirements.
  • the design volume of the internal combustion engine which is decisive for installation is not influenced by this configuration and arrangement of the exhaust gas recirculation system, so that a distinction between an internal combustion engine with exhaust gas recirculation and an internal combustion engine without exhaust gas recirculation can be omitted.
  • This is particularly advantageous with regard to the interchangeability of corresponding internal combustion engines installed, for example, in construction machines or agricultural machines.
  • the internal combustion engine has a cooling-air fan and the exhaust-gas recirculation system is arranged directly in the cooling-air flow conveyed by the cooling-air fan within a cooling air-conducting housing.
  • This arrangement initially enables effective cooling of the recirculated exhaust gas without any further expense.
  • the exhaust gas recirculation system can be integrated into adeluftleitkanal, which is formed by adeluftleitgephinuse and disposed along the cylinder head side, and thus in any case not over a given lateral contour protruding component, so as to ensure that one with a corresponding Exhaust gas recirculation system equipped internal combustion engine to the same internal combustion engine without an exhaust gas recirculation system is easily replaceable.
  • an internal combustion engine is preferably an air-cooled internal combustion engine, but it can also be an internal combustion engine with a combined cooling system, wherein the fan cools the cooling medium, such as oil and / or water, and optionally used in addition to the air cooling of the example cylinder head and / or a heat exchanger.
  • the cooling medium such as oil and / or water
  • the exhaust gas recirculation control valve is arranged adjacent to the cooling air blower, so that this thermally sensitive component is cooled particularly effectively and intensively.
  • the exhaust gas recirculation system may in particular have an external ribbing, wherein this external ribbing can, of course, be aligned in the direction of the cooling air flow in an optimized manner in terms of flow.
  • the internal combustion engine according to Fig. 1 has a crankcase 1, which is closed on the bottom side of an oil pan 2. On the crankcase 1 2 cylinder tubes are placed opposite to the oil pan, which in turn are covered by cylinder heads 3. In the embodiment, it is a 4-cylinder internal combustion engine, so that a total of four cylinder tubes and four cylinder heads 3 are installed. In addition, the internal combustion engine air-cooled and accordingly, the cylinder tubes and the cylinder heads 3 are provided with cooling fins 4.
  • a double belt wheel 5 is fastened to a crankshaft mounted in the crankcase 1, which is drive-connected via a first belt 6a to a generator 7 and via a second belt 6b with the intervention of a tensioning roller 8 with a cooling-air fan 9.
  • the cooling air blower 9 is arranged laterally above the crankcase 1 substantially in the area adjacent to the cylinder tubes and the cylinder heads 3 and promotes from the environment sucked cooling air into adeluftleitgephaseuse 10, which extends from the cooling air blower 9 to an opposite flywheel end 11 of the internal combustion engine and the subsidized cooling air distributed across the internal combustion engine along the cylinder tubes and the cylinder heads 3.
  • a maintenance cover of thedeluftleitgephinuses 10 is removed and shown in the region of the cooling air blower 9, thedeluftleitgephinuse 10 ° partially cut, so that an insight into the interior of thedeluftleitgephinuses 10 is given.
  • a row injection pump 12 is attached, which is connected via interrupted injection lines shown 13 a, 13 b used in the cylinder heads 3 fuel injection valves.
  • Each fuel injection valve is secured by means of clamping claws 14 on the cylinder head and connects laterally to a valve cover 15, which extends to an opposite cylinder head longitudinal side to the cool air side housing side cylinder head.
  • a fresh gas line 16 and an exhaust manifold 17 are arranged. In the area above, between and below the fresh gas line 16 and the exhaust manifold 17, a substantial part of the cooling air conveyed by the cooling air blower 9 flows back into the environment.
  • the combustion chambers located in the cylinders between the individual cylinder heads 3 and the pistons movable up and down in the cylinders are flow-connected via gas exchange valves and gas exchange ducts to the fresh gas line 16 and the exhaust manifold 17, respectively.
  • channels 18a, 18b are in the cylinder heads ( Fig. 2 ), of which one channel 18a is connected to a gas exchange outlet channel and the channel 18b is connected side by side to a gas exchange inlet channel.
  • These channels 18a, 18b are guided in a lower portion of the cylinder head 3 on the cooling air fan side cylinder head side and provided with mating connection means 19a, 19b.
  • an exhaust gas recirculation system is arranged, the channels 18 a controllably connected or controllably connected to the channels 18 b.
  • the channels 18a are connected to a common bus 20, which is continued in the region of the flywheel-side end 11 via a sheet 21 in a supply line 22 to an exhaust gas recirculation control valve 23.
  • a deflecting bend 24 is connected to the exhaust gas recirculation control valve 23, which continues in a distribution line 25, which is arranged approximately parallel below the manifold 20 and which in turn is connected to the channels 18b of the individual cylinder heads 3.
  • the entire exhaust gas recirculation system is disposed within thede povertyleitgephasepuruses 10 and is therefore not visible with thede povertyleitgephaseuse closed from the outside on the one hand and on the other hand, it does not affect the outer dimensions of the internal combustion engine. Furthermore, by the arrangement of the exhaust gas recirculation device completely within thedeluftleitgephaseuses 10 effective cooling of the components of the exhaust gas recirculation system.
  • the individual lines and bends as well as the exhaust gas recirculation control valve housing can also be additionally provided with inside and / or outside cooling fins to increase the heat transfer.
  • the in-line injection pump 12 is equipped with a regulator, which is designed as a mechanical regulator.
  • a regulator which is designed as a mechanical regulator.
  • the position of an existing in the series injection pump 12 control rod is tapped contactless and used this position to control the exhaust gas recirculation control valve 23 via a mechanical or electrical transmission device.
  • an electrical controller evaluates a control rod travel signal.
  • a Hall sensor is used, which is connected via one or more integrated into the control rod magnets.
  • Such a Hall sensor is a very reliable electrical switch with which the exhaust gas recirculation can be switched on and off.
  • the exhaust gas recirculation above an injection quantity corresponding to a load greater than three quarters of the full load turned off. In this full load range, no exhaust gas is recirculated, since in the full load range exhaust gas recirculation would lead to a deterioration of exhaust emissions.
  • a plurality of small magnets are inserted next to one another in bores. These magnets switch the outside mounted on the pump housing of the injector Hall sensor. This method or this embodiment is extremely reliable, since this electrical control is expressly not an electronic control device.
  • the exhaust gas recirculation is turned off at a speed below an increased idle speed.
  • This switching function is provided when with decreasing speeds, for example below a limit speed of 1500 rev / min, there is a risk that smoke problems may occur in an exhaust gas recirculation through the design of the injection system.
  • an inductive speed switch is provided, which is also mounted on the pump housing and below in particular a speed of 1450 revolutions / min outputs the desired switching signal.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Claims (5)

  1. Moteur à combustion interne avec un carter de vilebrequin (1) et une culasse (3) couvrant un cylindre du carter de vilebrequin, dans laquelle il est prévu un canal de gaz frais et un canal de gaz d'échappement, qui débouchent sur un côté longitudinal de la culasse et qui sont raccordés respectivement à une conduite de gaz frais (16) et à une conduite de collecte des gaz d'échappement (17), et dans lequel il se trouve un système de recyclage des gaz d'échappement, composé d'une conduite de recyclage des gaz d'échappement (20, 21, 22) et d'une soupape de commande (23), caractérisé en ce que le système de recyclage des gaz d'échappement est disposé sur le côté de la culasse opposé à la conduite de gaz frais (16) et à la conduite de collecte des gaz d'échappement (17).
  2. Moteur à combustion interne selon la revendication 1, caractérisé en ce que des canaux (18a, 18b) débouchant sur le côté de la culasse et raccordés respectivement au canal de gaz frais et au canal de gaz d'échappement sont pratiqués dans la culasse (3).
  3. Moteur à combustion interne selon la revendication 1 ou la revendication 2, caractérisé en ce que le moteur à combustion interne comprend un ventilateur d'air de refroidissement (9) et en ce que le système de recyclage des gaz d'échappement est disposé directement dans le courant d'air de refroidissement refoulé par le ventilateur d'air de refroidissement (9), à l'intérieur d'un carter de guidage de l'air de refroidissement (10).
  4. Moteur à combustion interne selon la revendication 3, caractérisé en ce que la soupape de commande de recyclage des gaz d'échappement (23) est disposée à proximité du ventilateur d'air de refroidissement (9).
  5. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de recyclage des gaz d'échappement présente un nervurage intérieur/extérieur.
EP06829229A 2005-12-08 2006-12-01 Recirculation de gaz d'echappement dans un moteur a combustion interne refroidi par air Not-in-force EP1957785B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005059007A DE102005059007A1 (de) 2005-12-08 2005-12-08 Abgasrückführung bei einer luftgekühlten Brennkraftmaschine
PCT/EP2006/011545 WO2007065601A1 (fr) 2005-12-08 2006-12-01 Recirculation de gaz d'echappement dans un moteur a combustion interne refroidi par air

Publications (2)

Publication Number Publication Date
EP1957785A1 EP1957785A1 (fr) 2008-08-20
EP1957785B1 true EP1957785B1 (fr) 2009-02-18

Family

ID=37814354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06829229A Not-in-force EP1957785B1 (fr) 2005-12-08 2006-12-01 Recirculation de gaz d'echappement dans un moteur a combustion interne refroidi par air

Country Status (5)

Country Link
US (1) US7832384B2 (fr)
EP (1) EP1957785B1 (fr)
AT (1) ATE423272T1 (fr)
DE (2) DE102005059007A1 (fr)
WO (1) WO2007065601A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007054954A1 (de) * 2007-11-17 2009-05-20 Deutz Ag Luftgekühlte Brennkraftmaschine
WO2011135898A1 (fr) * 2010-04-30 2011-11-03 ヤンマー株式会社 Moteur
JP5754914B2 (ja) * 2010-10-26 2015-07-29 ダイハツ工業株式会社 内燃機関
FR2973445B1 (fr) * 2011-03-31 2015-08-21 Valeo Systemes Thermiques Boitier repartiteur de gaz d'admission dans un moteur, notamment de vehicule automobile, et module d'alimentation en gaz comprenant ledit boitier
MX2018009666A (es) 2016-02-08 2019-05-22 Sherwin Williams Co Herramienta de preparacion.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5552049Y2 (fr) * 1976-01-31 1980-12-03
JPS5337232A (en) 1976-09-17 1978-04-06 Toyota Motor Corp Recirculating device of exhaust gas for internal combustion engine
JPS55107019A (en) * 1979-02-08 1980-08-16 Yamaha Motor Co Ltd Intake device for engine
DE2939708A1 (de) * 1979-09-29 1981-04-16 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur erwaermung eines teils des kraftstoff-luft-gemisches-zufuehrsystems einer brennkraftmaschine
US4271810A (en) * 1980-01-11 1981-06-09 General Motors Corporation Divided chamber engine with prechamber exhaust recirculation
JPS5949755U (ja) 1982-09-27 1984-04-02 本田技研工業株式会社 内燃エンジン
FR2689936B1 (fr) * 1992-04-09 1994-07-08 Peugeot Dispositif a rampe integree pour le recyclage des gaz d'echappement d'un moteur a combustion interne.
US6386154B1 (en) * 2000-06-12 2002-05-14 The United States Of America As Represented By The Administrator Of The Environmental Protection Agency Pumped EGR system
JP3800020B2 (ja) * 2001-03-13 2006-07-19 日産自動車株式会社 圧縮自己着火式エンジン
FR2840363B1 (fr) * 2002-06-04 2006-01-06 Valeo Thermique Moteur Sa Module d'echange de chaleur conforme pour envelopper un moteur de vehicule automobile
US6868842B2 (en) * 2002-06-28 2005-03-22 Caterpillar Inc. Cylinder head of engine having recirculation chamber
DE10360092A1 (de) * 2003-12-20 2005-07-21 Deutz Ag AGR-Kühler für insbesondere luftgekühlte Motoren

Also Published As

Publication number Publication date
US20090139501A1 (en) 2009-06-04
DE502006002917D1 (de) 2009-04-02
ATE423272T1 (de) 2009-03-15
EP1957785A1 (fr) 2008-08-20
WO2007065601A1 (fr) 2007-06-14
US7832384B2 (en) 2010-11-16
DE102005059007A1 (de) 2007-07-05

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