DE2363686A1 - I.C. engine with thermal storage - to reheat engine in connection with starting, in a controlled sequence - Google Patents
I.C. engine with thermal storage - to reheat engine in connection with starting, in a controlled sequenceInfo
- Publication number
- DE2363686A1 DE2363686A1 DE2363686A DE2363686A DE2363686A1 DE 2363686 A1 DE2363686 A1 DE 2363686A1 DE 2363686 A DE2363686 A DE 2363686A DE 2363686 A DE2363686 A DE 2363686A DE 2363686 A1 DE2363686 A1 DE 2363686A1
- Authority
- DE
- Germany
- Prior art keywords
- engine
- motor vehicle
- heat
- cooling
- thermal storage
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Bezeichnung: Thermospeicher für KFZ-Verbrennungsmotor-Kühlsysterne. Designation: Thermal storage for vehicle internal combustion engine cooling systems.
Beschreibung: Die Abgas-Schadstoffemmission von PKW-Ottomotoren in Stadtgebieten mit bevo.rzugtem Kurzstreckenverkehr wird bis zu etwa 50%" durch noch nicht warmqelaufene Motoren verursacht. Die Ursache liegt z.T. darin, daß während der Warmlaufohase ungünstige^?). durch sogenannte Starthilfe-Eingriffe (z.B. Cocke und Startautomatik) mit absichtlicher Gemischanreicherung verstärkt werden.Description: The exhaust gas pollutant emissions from car gasoline engines In urban areas with preferred short-haul traffic, up to about 50% "is due to traffic that has not yet warmed up Motors caused. The cause is partly that during the warm-up phase unfavorable ^?). through so-called jump start interventions (e.g. cocke and automatic starter) with deliberate mixture enrichment be reinforced.
Außerdem ist das verminderte.Start- und Fahrverhalten des kalten oder noch nicht durchgewärmt.en Motors für den Fahrer hinderlich und verursacht im Kurzstreckenverkehr einen bis zu ca. 30-50% höheren Treibstoffverbrauch.In addition, this is reduced starting and driving behavior the cold or not yet warmed up engine is a hindrance for the driver and causes the Short-haul traffic results in up to approx. 30-50% higher fuel consumption.
Hier soll erfindungsgemäß ein Thermospeicher Abhilfe schaffen, der den Motor vor oder während des Startvorganges bzw. der Warmlaufphase erwärmt. Dabei wird die Thermospeichermasse während der 2. Fahrstrecke, auf·der der Motor bereits voll durchgewärmt ist und in herkömmlicher Weise Verlustwärme über ein Kühlsystem an die Umgebung abgeben müßte, von dieser Kühlverlustleistung aufgewärmt. Nach Stillegung des Motors wird diese zusätzliche Wärmeenergie durch die Speichermasse, je nach Güte der thermischen Isolation des Systems bis zum nächsten Startvorgang bzw. der nächsten Betriebsphase des Motors gespeichert und kurzfristig an den Motor zurückgegeben.According to the invention, a thermal storage device is intended to remedy this create that heats the engine before or during the starting process or the warm-up phase. Included the thermal storage mass is used during the 2nd route, on which the engine is already fully warmed up and would have to give off heat loss to the environment in a conventional manner via a cooling system, warmed up by this cooling power dissipation. After the engine is shut down, this is additional thermal energy through the storage mass, depending on the quality of the thermal insulation of the system to the next The start process or the next operating phase of the engine is saved and sent to the engine for a short time returned.
Die Speichermasse besteht bevorzugt aus einer Flüssig/Fest-Mischung und/oder Verbindung die durch hohe spezifische Wärme und/oder Phasenänderung eine besonders hohe Wärmekapazität aufweist. Dabei kann entweder die übliche Kühlkreislauf-Flüssigkeit durch eine entsprechende Speichermasse ersetzt und die Kühlkreislaufoberflachen nach außen thermisch isoliert werden; oder die Speichermasse befindet sich in einem besonderen Behälter, durch den die Kühlflüssigkeit im Wärmetausch hindurchgeleitet wird und der in kompakter Form besonders leicht und gut isoliert wird. Auch eine Kombination beider Anordnungen weist Vorteile auf.The storage mass preferably consists of a liquid / solid mixture and / or compound which is through high specific heat and / or phase change has a particularly high heat capacity. Here can either the usual cooling circuit liquid is replaced by a corresponding storage mass and the cooling circuit surfaces thermally to the outside to be isolated; or the storage mass is in a special container through which the Cooling liquid is passed through in heat exchange and which is particularly light and in compact form is well insulated. A combination of the two arrangements also has advantages.
Im Falle einer günstigen thermischen Isolation der entsprechenden Bauteile kann die Wärmespeicherung gut 12 Stunden so aufrechterhalten werden, daß ein am Abend mit warmen Motor und Speicher abgestelltes KFZ am nächsten Morgen mit Warmstart gestartet oder unmittelbar mit warmen Motor angefahren werden kann. Der Warmstart wäre z.B. möglich, wenn vor dem Start durch eine elektrisch betriebene Umwälzpumpe die Kühlmittelflüssigkeit von dem Speicher kurzfristig aufgewärmt wird oder das Kühlmittel selbst die Speichermasse darstellt und der komplette Kühlkreis-' lauf isoliert wird.In the case of a favorable thermal insulation of the corresponding components, the heat storage can be maintained for a good 12 hours so that an engine and storage unit that is warm in the evening can be turned off The vehicle can be started the next morning with a warm start or immediately started with a warm engine. The warm start would be possible, for example, if the Coolant liquid is briefly warmed up by the memory or the coolant itself Represents storage mass and the complete cooling circuit is isolated.
Gemischaufbereitung und Yerbrennungs-j _ 2 ablaufe vorliegen, die noch !Mixture preparation and combustion processes present that still!
509826/0138509826/0138
_ or _ or
Die Speichermasse stellt bevorzugt eine Flüssig/Fest-Mischung und/oder Verbindung dar, die einen Phasenumwandlungspunkt bei ca. 50-80 C aufweist bzw. bei einer Temperatur die etwas unter der Betriebstemperatur des Motors liegt. ·The storage mass is preferably a liquid / solid mixture and / or compound which has a phase transition point at about 50-80 C or at a temperature slightly below the operating temperature of the Motor lies. ·
Bei einem luftgekühlten Motor könnte die Kühlluft durch einen seperaten Thermospeieher im Wärmeaustausch geleitet werden. Bei einem wasser- und/oder luftgekühlten Motor kann auch die Abgaswärme zum Aufheizen einer Thermospeichermasse herangezogen werden, die eine hohe Speichertemperatur und/oder Phasenwea-hseltemperatur aufweist und nach Bedarf die gespeicherte Wärme vor oder während des Kaltstarts an das KUhIm 1 IAeI -.um Vorwärmen oder schnelleren Erwärmen abgibt. Hierfür sind Thermospeichermassen mit höchster Wärmekapazität bekannt.In the case of an air-cooled motor, the cooling air could be passed through a separate thermal store in the heat exchange will. In the case of a water-cooled and / or air-cooled engine, the exhaust gas heat can also be used to heat a Thermal storage mass are used, which have a high storage temperature and / or phase change temperature and, as required, transfers the stored heat to the KUhIm 1 IAeI before or during the cold start for preheating or faster heating. For this are Thermal storage masses with the highest heat capacity known.
Bei Wasser und/oder luf tgekülilten Motoren besteht auch die Möglichkeit entsprechende Wärme aus dem Speicher an den Sehmierölkreislauf,an den Schmierölsammelbehälter oder an anderer geeigneter Stelle dem Schmieröl zuzufühten um ein Warmlaufen oder Vorwärmen des Motors zu unterstützen.In the case of water and / or air-cooled motors, there is also the option of using appropriate heat from the storage tank the Sehmieröl circuit, to the lubricating oil collecting tank or to be added to the lubricating oil at another suitable point in order to support warming up or preheating of the engine.
Es kann auch zweckmäßig sein mit einem besonderen Heizkreislauf und/oder Wärmeleitungssystem den Thermospeieher mit dem Verbrennungsmotor oder mit kritischen Bauteilen wie z.B. Zylinderkopf und Ansaugrohr zur Vorwärmung zu verbinden·It can also be expedient to use a special heating circuit and / or heat conduction system for the thermal store with the combustion engine or with critical components such as cylinder head and intake pipe for preheating associate·
original 509826/0138'original 509826/0138 '
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2363686A DE2363686A1 (en) | 1973-12-21 | 1973-12-21 | I.C. engine with thermal storage - to reheat engine in connection with starting, in a controlled sequence |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2363686A DE2363686A1 (en) | 1973-12-21 | 1973-12-21 | I.C. engine with thermal storage - to reheat engine in connection with starting, in a controlled sequence |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2363686A1 true DE2363686A1 (en) | 1975-06-26 |
Family
ID=5901465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2363686A Pending DE2363686A1 (en) | 1973-12-21 | 1973-12-21 | I.C. engine with thermal storage - to reheat engine in connection with starting, in a controlled sequence |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2363686A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2370932A1 (en) * | 1976-07-28 | 1978-06-09 | Motorheizung Gmbh | Motor driven heating unit and heat pump - uses exhaust heated water tank and insulation to return heat to system |
FR2494676A1 (en) * | 1980-11-27 | 1982-05-28 | Creusot Loire | MOBILE CRANE FOR OPERATING IN COLD REGIONS |
US4391235A (en) * | 1981-05-28 | 1983-07-05 | Majkrzak David S | Vehicle exhaust gas warm-up heater system |
US5299630A (en) * | 1991-11-09 | 1994-04-05 | Oskar Schatz | Method of rapidly heating a mass to an operative temperature, in particular a vehicle engine during cold starting |
US5662072A (en) * | 1995-05-26 | 1997-09-02 | Nippondenso Co., Ltd. | Engine warming-up apparatus for a vehicle and heat insulating device |
US5884588A (en) * | 1996-05-10 | 1999-03-23 | Valeo Thermique Moteur | Engine cooling system with a thermally insulated fluid reservoir |
DE102008027207A1 (en) * | 2008-06-06 | 2009-12-10 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle, has engine compartment including thermal and/or acoustic insulation at side facing internal combustion engine, and phase-change material that is arranged in space between engine and insulation |
-
1973
- 1973-12-21 DE DE2363686A patent/DE2363686A1/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2370932A1 (en) * | 1976-07-28 | 1978-06-09 | Motorheizung Gmbh | Motor driven heating unit and heat pump - uses exhaust heated water tank and insulation to return heat to system |
FR2494676A1 (en) * | 1980-11-27 | 1982-05-28 | Creusot Loire | MOBILE CRANE FOR OPERATING IN COLD REGIONS |
EP0053555A1 (en) * | 1980-11-27 | 1982-06-09 | Creusot-Loire | Mobile crane for operation in cold regions |
US4391235A (en) * | 1981-05-28 | 1983-07-05 | Majkrzak David S | Vehicle exhaust gas warm-up heater system |
US5299630A (en) * | 1991-11-09 | 1994-04-05 | Oskar Schatz | Method of rapidly heating a mass to an operative temperature, in particular a vehicle engine during cold starting |
US5662072A (en) * | 1995-05-26 | 1997-09-02 | Nippondenso Co., Ltd. | Engine warming-up apparatus for a vehicle and heat insulating device |
US5884588A (en) * | 1996-05-10 | 1999-03-23 | Valeo Thermique Moteur | Engine cooling system with a thermally insulated fluid reservoir |
DE102008027207A1 (en) * | 2008-06-06 | 2009-12-10 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle, has engine compartment including thermal and/or acoustic insulation at side facing internal combustion engine, and phase-change material that is arranged in space between engine and insulation |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OHJ | Non-payment of the annual fee |