WO2007118435A1 - Combustion engine with direct water injection - Google Patents

Combustion engine with direct water injection Download PDF

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Publication number
WO2007118435A1
WO2007118435A1 PCT/DE2006/000665 DE2006000665W WO2007118435A1 WO 2007118435 A1 WO2007118435 A1 WO 2007118435A1 DE 2006000665 W DE2006000665 W DE 2006000665W WO 2007118435 A1 WO2007118435 A1 WO 2007118435A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
engine
injection
combustion engine
water injection
Prior art date
Application number
PCT/DE2006/000665
Other languages
German (de)
French (fr)
Inventor
Andreas Schilke
Original Assignee
Andreas Schilke
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 Andreas Schilke filed Critical Andreas Schilke
Priority to PCT/DE2006/000665 priority Critical patent/WO2007118435A1/en
Publication of WO2007118435A1 publication Critical patent/WO2007118435A1/en

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
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F02M25/0224—Water treatment or cleaning
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/025—Adding water
    • F02M25/03—Adding water into the cylinder or the pre-combustion chamber
    • 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
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • 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

Definitions

  • the invention relates to an internal combustion engine (Otto, Diesel, Wankel, etc.) which is equipped with an additional injection system for water or similar liquid.
  • the necessary heat is generated for evaporation outside the actual drive space and the steam is supplied to the drive via valves.
  • a gas is supplied in different cycles, ignited the gas and the exhaust gas out of the combustion chamber.
  • the gas may already contain the fuel, or this is supplied separately via an injection system.
  • the invention relates to the injection of water into the combustion chamber of an OTTO, diesel, 2-stroke, 4-stroke or Wankel engine to absorb the heat generated during the previous combustion and use of the resulting vapor pressure to drive the engine.
  • the water is heated by the engine exhaust gas in a pressure vessel prior to injection.
  • An engine according to the invention has the following various advantages.
  • the heat generated during combustion is used as drive energy and reduces fuel consumption.
  • the engine is cooled by the injected and evaporating water.
  • the engine has all the elements of a conventional engine.
  • it contains a water tank, a charge pump, which pumps the water from the tank into the exhaust gas heat exchanger, the exhaust gas / water heat exchanger and the injection pump of the water circuit.
  • a temperature sensor for controlling the switching water operation / fuel operation can be provided.
  • the number of replaced cycles, amount of water and injection time of the liquid introduced results from the engine and water temperature.
  • the water injection remains off and the engine is operated to reach the necessary temperature as a pure internal combustion engine.
  • FIG. 1 the schematic structure for a gasoline direct injection engine is shown.
  • the structure for the injection of water is the same for diesel, carburetor or Wankel engines, only the illustrated elements of the classic engine change.
  • the water is pumped out of the tank into the exhaust gas heat exchanger because there is a much higher pressure and overheating there.
  • the injection pump controls the time and amount of water through a valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The invention concerns an enhancement to a conventional piston combustion engine using a further direct injection system for water that has already been heated by the engine exhaust. Owing to the water vaporizing directly in the combustion chamber, it is possible to use additional operating power that would otherwise be removed as waste heat.

Description

Verbrennungsmotor mit direkter Wassereinspritzung:Internal combustion engine with direct water injection:
Die Erfindung betrifft einen Verbrennungsmotor (Otto, Diesel, Wankel, etc.) welcher mit einer zusätzlichen Einspritzanlage für Wasser oder ähnliche Flüssigkeit ausgerüstet ist.The invention relates to an internal combustion engine (Otto, Diesel, Wankel, etc.) which is equipped with an additional injection system for water or similar liquid.
In herkömmlichen Verbrennungsmotoren wird die bei der Verbrennung freigesetzte Wärme über das Motorgehäuse abgeführt und durch Luft oder Wasserkühlung weitgehend ungenutzt an die Umwelt abgegeben.In conventional internal combustion engines, the heat released during combustion is dissipated via the motor housing and released into the environment largely unused by air or water cooling.
Die Technik der Direkteinspritzung in den Brennraum wird zur Zeit ausschließlich für den zu verbrennenden Treibstoff genutzt.The technique of direct injection into the combustion chamber is currently used exclusively for the fuel to be burned.
In Dampfbetriebenen Motoren wird die notwendige Wärme zur Verdampfung außerhalb des eigentlichen Antriebsraumes erzeugt und der Dampf dem Antrieb über Ventile zugeführt. Bei Verbrennungsmotoren wird in unterschiedlichen Takten ein Gas zugeführt, das Gas gezündet und das Abgas aus dem Brennraum geführt. Hierbei kann das Gas den Brennstoff bereits enthalten, oder dieser wird separat über eine Einspritzanlage zugeführt.In steam-powered engines, the necessary heat is generated for evaporation outside the actual drive space and the steam is supplied to the drive via valves. In internal combustion engines, a gas is supplied in different cycles, ignited the gas and the exhaust gas out of the combustion chamber. Here, the gas may already contain the fuel, or this is supplied separately via an injection system.
Gegenstand der Erfindung ist die Einspritzung Wasser in den Verbrennungsraum eines OTTO-, Diesel-, 2-Takt-, 4-Takt- oder Wankelmotors zur Aufnahme der bei der vorherigen Verbrennung entstandenen Wärme und Nutzung des daraus entstehenden Dampfdruckes zum Antrieb des Motors. Das Wasser wird vor der Einspritzung in einem Druckbehälter durch das Motorabgas erhitzt.The invention relates to the injection of water into the combustion chamber of an OTTO, diesel, 2-stroke, 4-stroke or Wankel engine to absorb the heat generated during the previous combustion and use of the resulting vapor pressure to drive the engine. The water is heated by the engine exhaust gas in a pressure vessel prior to injection.
Ein erfindungsgemäßer Motor weißt folgende verschiedenen Vorteile auf. Die bei der Verbrennung entstehende Wärme wird als Antriebsenergie genutzt und reduziert den Brennstoffverbrauch. Der Motor wird durch das eingespritzte und verdampfende Wasser gekühlt. Erläuterung der Erfindung anhand eines 4-Takt-Motors:An engine according to the invention has the following various advantages. The heat generated during combustion is used as drive energy and reduces fuel consumption. The engine is cooled by the injected and evaporating water. Explanation of the invention with reference to a 4-stroke engine:
Der Motor verfügt über alle Elemente einen konventionellen Motors. Zusätzlich enthält er einen Wassertank, eine Ladepumpe, welche das Wasser aus dem Tank in den Abgas- Wärmetauscher pumpt, den Abgas/Wasser-Wärmetauscher und die Einspritzpumpe des Wasserkreises. Optional kann auch ein Temperatursensor zur Regelung der Umschaltung Wasserbetrieb/Brennstoffbetrieb vorgesehen werden.The engine has all the elements of a conventional engine. In addition, it contains a water tank, a charge pump, which pumps the water from the tank into the exhaust gas heat exchanger, the exhaust gas / water heat exchanger and the injection pump of the water circuit. Optionally, a temperature sensor for controlling the switching water operation / fuel operation can be provided.
Die vier Takte des Explosionsmotors (Ansaugen, Komprimieren, Expandieren nach erfolgter Zündung und Ausdrücken des Abgases) bleiben unverändert erhalten; Unabhängig von der Art der Zündung (selbst- oder fremd-) und unabhängig von der Art der Brennstoff-Einbringung (Vergaser, Einspritzanlage, direkte Einspritzung).The four strokes of the explosion engine (suction, compression, expansion after ignition and expressing the exhaust gas) remain unchanged; Regardless of the type of ignition (self-or foreign) and regardless of the type of fuel injection (carburetor, injection system, direct injection).
Die kontinuierliche Folge dieser Takte mit regelmäßiger Brennstoff-Einbringung und Zündung wird jedoch unterbrochen und durch folgenden Prozess ersetzt.However, the continuous sequence of these cycles with regular fuel injection and ignition is interrupted and replaced by the following process.
An Stelle der Brennstoffeinbringung und Zündung tritt die Einspritzung von Wasser und das Verdampfung der Flüssigkeit, wobei der Kolben durch den Dampfdruck angetrieben wird.Instead of fuel injection and ignition, the injection of water and the evaporation of the liquid occurs, the piston being driven by the vapor pressure.
Die Anzahl der ersetzten Takte, Wassermenge und Einspritzzeitpunkt der eingebrachten Flüssigkeit ergibt sich aus der Motor- und Wassertemperatur. Gegebenenfalls bleibt die Wassereinspritzung aus und der Motor wird bis zum erreichen der notwendigen Temperatur wie ein reiner Verbrennungsmotor betrieben.The number of replaced cycles, amount of water and injection time of the liquid introduced results from the engine and water temperature. Optionally, the water injection remains off and the engine is operated to reach the necessary temperature as a pure internal combustion engine.
In Anliegender Fig.1 ist der schematische Aufbau für einen Benzin-Direkteinspritzer-Motor dargestellt. Der Aufbau für die Einspritzung von Wasser ist bei Diesel-, Vergaser- oder Wankelmotoren gleich, es ändern sich nur die dargestellten Elemente des klassischen Motors. Das Wasser wird aus dem Tank in den Abgaswärmetauscher gepumpt, da dort ein wesentlich höherer Druck herrscht und dort überhitzt. Die Einspritzpumpe steuert den Zeitpunkt und Wassermenge über ein Ventil. Referring to Figure 1, the schematic structure for a gasoline direct injection engine is shown. The structure for the injection of water is the same for diesel, carburetor or Wankel engines, only the illustrated elements of the classic engine change. The water is pumped out of the tank into the exhaust gas heat exchanger because there is a much higher pressure and overheating there. The injection pump controls the time and amount of water through a valve.

Claims

Patentansprüche: claims:
1. Kolben-Verbrennungsmotore dadurch gekennzeichnet, dass sie über eine zusätzlicher Direkteinspritzung von Wasser verfügen.1. piston internal combustion engines characterized in that they have an additional direct injection of water.
2. Kolben-Verbrennungsmotore dadurch gekennzeichnet, dass sie über eine zusätzlicher Direkteinspritzung von Wasser mit Abgas/Wasser-Wärmetauscher verfügen. 2. Piston internal combustion engines characterized in that they have an additional direct injection of water with exhaust gas / water heat exchanger.
PCT/DE2006/000665 2006-04-15 2006-04-15 Combustion engine with direct water injection WO2007118435A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DE2006/000665 WO2007118435A1 (en) 2006-04-15 2006-04-15 Combustion engine with direct water injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2006/000665 WO2007118435A1 (en) 2006-04-15 2006-04-15 Combustion engine with direct water injection

Publications (1)

Publication Number Publication Date
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2455500A (en) * 2007-12-04 2009-06-17 Ronald Aspden I.c. engine with water injection to generate steam
WO2009155914A1 (en) * 2008-06-24 2009-12-30 Technische Universität Hamburg-Harburg Method for braking an internal combustion engine
CN102121434A (en) * 2010-01-22 2011-07-13 靳北彪 Low-entropy hybrid combustion circulating thermal power system
WO2014166536A1 (en) * 2013-04-11 2014-10-16 Silicon Fire Ag Method and device for controlling the power of an internal combustion engine
CN106837520A (en) * 2017-01-19 2017-06-13 成都叮当自动化设备有限公司 A kind of cryogenic engine for preheating
WO2018227796A1 (en) * 2017-06-16 2018-12-20 中创新核（北京）科技有限公司 Internal heating steam-boosted engine
DE102020100268A1 (en) * 2020-01-09 2021-07-15 Bayerische Motoren Werke Aktiengesellschaft Storage arrangement for an injection water
CN113389624A (en) * 2021-06-11 2021-09-14 重庆大学 Wankel engine and high-temperature water spraying based tail gas waste heat recovery efficient engine structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU483181B2 (en) * 1973-09-11 1976-03-18 Edward Morris Albert AN ENGINE bya Provisional Specification
JPS57171050A (en) * 1981-04-14 1982-10-21 Isao Kuribayashi Internal-combustion engine utilizing steam pressure
JPS60184923A (en) * 1984-03-02 1985-09-20 Kyocera Corp Water-injection heat-insulated ceramic diesel engine
DE10062835A1 (en) * 2000-12-17 2002-06-20 Erich Schneider Piston engine with sequential steam injection has thermal insulation lining on combustion chamber wall, piston base, and cylinder wall, and regulated steam injection volume and injection timing
GB2394511A (en) * 2002-10-11 2004-04-28 Bernard Owen Internal combustion engine with direct water injection into cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU483181B2 (en) * 1973-09-11 1976-03-18 Edward Morris Albert AN ENGINE bya Provisional Specification
JPS57171050A (en) * 1981-04-14 1982-10-21 Isao Kuribayashi Internal-combustion engine utilizing steam pressure
JPS60184923A (en) * 1984-03-02 1985-09-20 Kyocera Corp Water-injection heat-insulated ceramic diesel engine
DE10062835A1 (en) * 2000-12-17 2002-06-20 Erich Schneider Piston engine with sequential steam injection has thermal insulation lining on combustion chamber wall, piston base, and cylinder wall, and regulated steam injection volume and injection timing
GB2394511A (en) * 2002-10-11 2004-04-28 Bernard Owen Internal combustion engine with direct water injection into cylinder

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2455500A (en) * 2007-12-04 2009-06-17 Ronald Aspden I.c. engine with water injection to generate steam
WO2009155914A1 (en) * 2008-06-24 2009-12-30 Technische Universität Hamburg-Harburg Method for braking an internal combustion engine
CN102076944A (en) * 2008-06-24 2011-05-25 汉堡-哈尔堡工业大学 Method for braking an internal combustion engine
CN102121434A (en) * 2010-01-22 2011-07-13 靳北彪 Low-entropy hybrid combustion circulating thermal power system
CN102121434B (en) * 2010-01-22 2014-09-10 靳北彪 Low-entropy hybrid combustion circulating thermal power system
WO2014166536A1 (en) * 2013-04-11 2014-10-16 Silicon Fire Ag Method and device for controlling the power of an internal combustion engine
CN106837520A (en) * 2017-01-19 2017-06-13 成都叮当自动化设备有限公司 A kind of cryogenic engine for preheating
WO2018227796A1 (en) * 2017-06-16 2018-12-20 中创新核（北京）科技有限公司 Internal heating steam-boosted engine
DE102020100268A1 (en) * 2020-01-09 2021-07-15 Bayerische Motoren Werke Aktiengesellschaft Storage arrangement for an injection water
CN113389624A (en) * 2021-06-11 2021-09-14 重庆大学 Wankel engine and high-temperature water spraying based tail gas waste heat recovery efficient engine structure

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