DE10028699B4 - Motor vehicle and method for heating a catalytic converter of an internal combustion engine after a cold start - Google Patents
Motor vehicle and method for heating a catalytic converter of an internal combustion engine after a cold start Download PDFInfo
- Publication number
- DE10028699B4 DE10028699B4 DE10028699A DE10028699A DE10028699B4 DE 10028699 B4 DE10028699 B4 DE 10028699B4 DE 10028699 A DE10028699 A DE 10028699A DE 10028699 A DE10028699 A DE 10028699A DE 10028699 B4 DE10028699 B4 DE 10028699B4
- Authority
- DE
- Germany
- Prior art keywords
- interior
- secondary air
- catalyst
- air duct
- blower
- 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 - Fee Related
Links
Classifications
-
- 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
- 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
- F01N3/20—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 specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
- F01N3/32—Arrangements for supply of additional air using air pump
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Kraftfahrzeug mit einer Brennkraftmaschine (10) mit einem Abgasstrang (12, 14), einem im Abgasstrang (12) angeordneten Katalysator (16), einem Innenraum (24) für Fahrgäste und einem Innenraumgebläse (18) mit Innenraumluftkanal (20) zum Zuführen von Frischluft (22) an den Innenraum (24), dadurch gekennzeichnet, daß stromab des Innenraumgebläses (18) ein Sekundärluftkanal (26) von dem Innenraumluftkanal (20) abzweigend angeordnet und mit dem Abgasstrang (12, 14) der Brennkraftmaschine (10) stromauf des Katalysators (16) verbunden ist, wobei eine Schalteinrichtung (30) vorgesehen ist, welche wahlweise den Sekundärluftkanal (26) öffnet oder schließt.motor vehicle with an internal combustion engine (10) with an exhaust gas line (12, 14), a in the exhaust line (12) arranged catalyst (16), an interior (24) for passengers and an interior blower (18) with indoor air duct (20) for supplying fresh air (22) the interior (24), characterized in that downstream of the interior blower (18) a secondary air duct (26) branched off from the indoor air duct (20) and with the exhaust line (12, 14) of the internal combustion engine (10) upstream of the Catalyst (16) is connected, wherein a switching device (30) is provided, which optionally opens the secondary air duct (26) or closes.
Description
Die Erfindung betrifft ein Kraftfahrzeug mit einer Brennkraftmaschine mit einem Abgasstrang, einem im Abgasstrang angeordneten Katalysator, einem Innenraum für Fahrgäste und einem Innenraumgebläse mit Innenraumluftkanal zum Zuführen von Frischluft an den Innenraum, gemäß dem Oberbegriff des Anspruchs 1. Die Erfindung betrifft ferner ein Verfahren zum Betrieb einer Brennkraftmaschine für ein Kraftfahrzeug mit einem Abgasstrang, einem im Abgasstrang angeordneten Katalysator, einem Innenraum für Fahrgäste und einem Innenraumgebläse mit Innenraumluftkanal zum Zuführen von Frischluft an den Innenraum, wobei nach einem Kaltstart zum schnellen Aufheizen in den Abgasstrang stromauf des Katalysators Sekundärluft eingeleitet wird, bis der Katalysator eine vorbestimmte Temperatur erreicht hat, gemäß dem Oberbegriff des Anspruchs 4.The The invention relates to a motor vehicle with an internal combustion engine with an exhaust gas line, a catalyst arranged in the exhaust gas system, an interior for passengers and an interior fan with indoor air duct for feeding of fresh air to the interior, according to the preamble of the claim 1. The invention further relates to a method for operating a Internal combustion engine for a motor vehicle with an exhaust system, one arranged in the exhaust system Catalyst, an interior for passengers and an interior fan with indoor air duct for feeding from fresh air to the interior, where after a cold start to fast Heating in the exhaust line upstream of the catalyst introduced secondary air is until the catalyst reaches a predetermined temperature has, according to the generic term of claim 4.
Während eines
Aufheizens eines Katalysators einer Brennkraftmaschine auf seine
Betriebstemperatur nach einem Kaltstart der Brennkraftmaschine ergeben
sich besonders hohe Schadstoffemissionen, bis der Katalysator seine
volle Wirkung bei vorbestimmter Betriebstemperatur erreicht. Da nach
gängigen
Normen auch die Kaltstartphase in einen Meßzyklus für die Bestimmung der Schadstoffemission
einer Brennkraftmaschine mit einbezogen wird, ist es daher wünschenswert,
den Katalysator nach dem Kaltstart möglichst schnell auf seine Betriebstemperatur
zu erwärmen,
um die schadstoffintensive Kaltstartphase so kurz wie möglich zu
halten. Es ist beispielsweise aus der
Um
ein separates Sekundärluftpumpengebläse einzusparen
ist es beispielsweise aus der
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Kraftfahrzeug und ein Verfahren der obengenannten Art zur Verfügung zu stellen, wobei die obengenannten Nachteile überwunden werden und auf einfache und kostengünstige Weise eine kurze Aufwärmephase für den Katalysator erzielt wird.Of the The present invention is therefore based on the object, a motor vehicle and to provide a method of the above type, wherein the above-mentioned disadvantages are overcome and easy and inexpensive Make a short warm-up phase for the Catalyst is achieved.
Diese Aufgabe wird erfindungsgemäß durch ein Kraftfahrzeug der o. g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen und durch ein Verfahren der o. g. Art mit den in Anspruch 4 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben.These The object is achieved by a Motor vehicle of the o. G. Type with the characterized in claim 1 Features and by a method of o. G. Kind of claim 4 marked features solved. Advantageous embodiments of the invention are specified in the dependent claims.
Bei einem Kraftfahrzeug der o. g. Art ist es erfindungsgemäß vorgesehen, daß stromab des Innenraumgebläses ein Sekundärluftkanal von dem Innenraumluftkanal abzweigend angeordnet und mit dem Abgasstrang der Brennkraftmaschine stromauf des Katalysators verbunden ist, wobei eine Schalteinrichtung vorgesehen ist, welche wahlweise den Sekundärluftkanal öffnet oder schließt.at a motor vehicle of the o. Art it is provided according to the invention, that downstream of the interior blower a secondary air duct branched off from the indoor air duct and with the exhaust line the internal combustion engine is connected upstream of the catalytic converter, wherein a switching device is provided which selectively opens the secondary air channel or closes.
Dies hat den Vorteil, daß für die Zuführung weder zusätzliche Aggregate noch aufwendige mechanische Umbauten erforderlich sind.This has the advantage that neither for the feed additional Aggregates still complex mechanical conversions are required.
In einer bevorzugten Ausführungsform umfaßt die Schalteinrichtung eine Schaltklappe im Sekundärluftkanal.In a preferred embodiment comprises the switching device a switching flap in the secondary air duct.
Damit die Innenraumbelüftung durch den Abzweig von Sekundärluft nicht beeinträchtigt wird, ist eine Steuereinrichtung zum Steuern einer Gebläseleistung des Innenraumgebläses vorgesehen und derart ausgebildet, daß bei offenem Sekundärluftkanal die Gebläseleistung derart erhöht ist, daß eine Luftförderrate in den Innenraum im Vergleich mit der Luftförderrate bei geschlossenem Sekundärluftkanal im wesentlichen konstant bleibt.In order to the interior ventilation through the branch of secondary air not impaired is, is a control device for controlling a blower power of the interior blower provided and designed such that when open secondary air duct the blower power so increased is that an air delivery rate in the interior in comparison with the air flow rate when closed Secondary air channel in remains essentially constant.
Bei einem Verfahren der o. g. Art ist es erfindungsgemäß vorgesehen, daß die Sekundärluft von dem Innenraumluftkanal stromab des Innenraumgebläses abgezeigt wird.at a method of o. Art it is provided according to the invention, that the secondary air shown from the indoor air duct downstream of the interior blower becomes.
Dies hat den Vorteil, daß für die Zuführung weder zusätzliche Aggregate noch aufwendige mechanische Umbauten erforderlich sind.This has the advantage that neither for the feed additional Aggregates still complex mechanical conversions are required.
Damit die Innenraumbelüftung durch den Abzweig von Sekundärluft nicht beeinträchtigt wird, wird die Gebläseleistung des Innenraumgebläses während der Zeit, in der Sekundärluft abgezweigt wird, derart erhöht, daß eine Luftförderrate in den Innenraum im Vergleich mit der Luftförderrate ohne Abzweigung von Sekundärluft konstant bleibt.In order to the interior ventilation through the branch of secondary air not impaired becomes the blower power of the interior blower while the time, in the secondary air is branched off, so increased that one Air flow rate in the interior in comparison with the air flow rate without diversion of secondary air remains constant.
Weitere Merkmale, Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen, sowie aus der nachstehenden Beschreibung der Erfindung anhand der beigefügten Zeichnung. Diese zeigt in der einzigen Fig. eine schematische Darstellung eines erfindungsgemäßen Kraftfahrzeuges zum Ausführen des erfindungsgemäßen Verfahrens.Further Features, advantages and advantageous embodiments of the invention arise from the dependent ones claims, and from the following description of the invention with reference to the attached Drawing. This shows in the only Fig. A schematic representation a motor vehicle according to the invention to run the method according to the invention.
Das
in der einzigen Fig. beispielhaft dargestellte Kraftfahrzeug umfaßt eine
Brennkraftmaschine mit einem Motorblock
Stromab
des Innenraumgebläses
Nach
einem Kaltstart der Brennkraftmaschine mit kaltem Katalysator
Sobald
jedoch der Katalysator
Damit
die reguläre
Frischluftzufuhr an den Innenraum
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10028699A DE10028699B4 (en) | 2000-06-09 | 2000-06-09 | Motor vehicle and method for heating a catalytic converter of an internal combustion engine after a cold start |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10028699A DE10028699B4 (en) | 2000-06-09 | 2000-06-09 | Motor vehicle and method for heating a catalytic converter of an internal combustion engine after a cold start |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10028699A1 DE10028699A1 (en) | 2001-12-13 |
DE10028699B4 true DE10028699B4 (en) | 2008-09-25 |
Family
ID=7645307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10028699A Expired - Fee Related DE10028699B4 (en) | 2000-06-09 | 2000-06-09 | Motor vehicle and method for heating a catalytic converter of an internal combustion engine after a cold start |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10028699B4 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5486025A (en) * | 1977-12-21 | 1979-07-09 | Nissan Motor Co Ltd | Air fuel ratio controller |
DE2820592A1 (en) * | 1978-05-11 | 1979-11-15 | Porsche Ag | IC engine with exhaust afterburner - has exhaust vacuum operated valve to supply secondary air from engine cooling fan |
DE19641467A1 (en) * | 1996-10-09 | 1998-04-16 | Mann & Hummel Filter | Secondary air system for IC engine |
DE19730905C1 (en) * | 1997-07-18 | 1999-01-28 | Daimler Benz Ag | Internal combustion engine system with engine cooling and exhaust gas secondary air supply |
-
2000
- 2000-06-09 DE DE10028699A patent/DE10028699B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5486025A (en) * | 1977-12-21 | 1979-07-09 | Nissan Motor Co Ltd | Air fuel ratio controller |
DE2820592A1 (en) * | 1978-05-11 | 1979-11-15 | Porsche Ag | IC engine with exhaust afterburner - has exhaust vacuum operated valve to supply secondary air from engine cooling fan |
DE19641467A1 (en) * | 1996-10-09 | 1998-04-16 | Mann & Hummel Filter | Secondary air system for IC engine |
DE19730905C1 (en) * | 1997-07-18 | 1999-01-28 | Daimler Benz Ag | Internal combustion engine system with engine cooling and exhaust gas secondary air supply |
Also Published As
Publication number | Publication date |
---|---|
DE10028699A1 (en) | 2001-12-13 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8120 | Willingness to grant licences paragraph 23 | ||
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |