WO1993018295A1 - Procede visant a eviter les depots de carburant dans le collecteur d'admission de moteurs a combustion interne - Google Patents

Procede visant a eviter les depots de carburant dans le collecteur d'admission de moteurs a combustion interne Download PDF

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Publication number
WO1993018295A1
WO1993018295A1 PCT/DE1992/000179 DE9200179W WO9318295A1 WO 1993018295 A1 WO1993018295 A1 WO 1993018295A1 DE 9200179 W DE9200179 W DE 9200179W WO 9318295 A1 WO9318295 A1 WO 9318295A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
internal combustion
combustion engines
inlet manifold
intake manifold
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.)
Ceased
Application number
PCT/DE1992/000179
Other languages
German (de)
English (en)
Inventor
Oskar Schatz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1993018295A1 publication Critical patent/WO1993018295A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs
    • F02N19/08—Arrangement thereof
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/045—Fuel-air mixture
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/16—Other apparatus for heating fuel
    • 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 a method for avoiding fuel deposits in the intake manifold of internal combustion engines by heating the surface in the intake manifold which is injected with liquid fuel.
  • Wall deposits of the fuel in the cold intake tract of the engine between the injection system and the intake valve during a cold start are compensated for by excess fuel during the cold start and cause the major part of the increased CO and HC emissions during the cold start Catalytic converters
  • the result of the electrical heating of the heat exchanger is that it can only be heated when electrical power from the generator is available after the engine has been started, because the simultaneous load on the battery, which is usually overused when the engine is cold, due to the high power need of the starter and the heat exchanger heating must be avoided during a cold start.
  • the high emission values in the starting phase are therefore only reduced with a time delay resulting from the delayed start of heating the heat exchanger compared to the start of the engine and the time required for heating the cold heat exchanger. It is therefore an object of the invention to design the method mentioned at the outset in such a way that the fuel deposit in the intake manifold, in particular during a cold start, is avoided without disadvantageous repercussions on the electrical system on board and that this effect is used without restriction when the engine is started. is standing.
  • the solution to this problem is that the heating energy is drawn from a heat store at least in the starting phase.
  • the heating energy can be made available at the same time the engine is started.
  • the area exposed can be heated to the temperature of the heat transfer medium immediately before the cold start are heated in the circuit discharging the heat accumulator, with only about 20 W of electrical power for the operation of a circulation pump for the heat transfer medium, for example the engine coolant must be used.
  • the waste heat cannot be sufficient to load a store, which is why it may then be necessary to load the store with generated heat. If the heat source used to load the storage tank is a
  • the heated surfaces can also be heated by direct heat exchange with this heat source.
  • the figure shows a section through the mouth of an intake manifold in an engine cylinder.
  • a heat exchanger e.g. a latent heat accumulator loaded by waste heat from the engine
  • Circulation of the heat transfer medium is served by a circulation pump, which, like the latent heat accumulator, is not shown.
  • the coil 18 is arranged so that the
  • the fuel jet from a fuel injection valve 26 strikes the coil 18.
  • the circulating pump in the heat transfer medium circuit is started up with a sufficiently dimensioned lead time before the cold start of the engine, for example by an automatic one connected to the door Circuit. If subsequently the fuel jet strikes the preheated coil 18 at the start, the fuel is produced in a known manner
  • REPLACEMENT LEAF evaporates at least partially and the wetting of the walls with liquid fuel is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Afin d'éviter les dépôts de carburant dans le collecteur d'admission de moteurs à combustion interne, la surface dudit collecteur exposée au carburant liquide injecté est chauffée. L'énergie de chauffage est prélevée pendant la phase de démarrage, à partir d'un accumulateur thermique et la surface exposée est, de préférence, chauffée immédiatement avant le départ à froid, pour qu'elle atteigne la température du caloporteur dans le circuit déchargeant l'accumulateur thermique.
PCT/DE1992/000179 1991-03-01 1992-03-03 Procede visant a eviter les depots de carburant dans le collecteur d'admission de moteurs a combustion interne Ceased WO1993018295A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4106581A DE4106581A1 (de) 1991-03-01 1991-03-01 Verfahren zur vermeidung von brennstoffablagerungen im saugrohr von verbrennungsmotoren

Publications (1)

Publication Number Publication Date
WO1993018295A1 true WO1993018295A1 (fr) 1993-09-16

Family

ID=6426258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000179 Ceased WO1993018295A1 (fr) 1991-03-01 1992-03-03 Procede visant a eviter les depots de carburant dans le collecteur d'admission de moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE4106581A1 (fr)
WO (1) WO1993018295A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307217C2 (de) * 1993-03-08 2000-08-31 Schuemann Sasol Gmbh & Co Kg Latentwärmespeicher für ein Kraftfahrzeug
DE20013781U1 (de) * 2000-08-07 2001-12-20 Dolmar GmbH, 22045 Hamburg Zweitaktmotor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064658A (en) * 1979-12-06 1981-06-17 Bosch Pierburg System Ohg Heating of combustible mixture generators for internal combustion engines
JPS5851262A (ja) * 1981-09-19 1983-03-25 Nippon Soken Inc エンジンの燃料気化促進装置
JPH0361660A (ja) * 1989-07-28 1991-03-18 Suzuki Motor Corp エンジンの始動補助装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064658A (en) * 1979-12-06 1981-06-17 Bosch Pierburg System Ohg Heating of combustible mixture generators for internal combustion engines
JPS5851262A (ja) * 1981-09-19 1983-03-25 Nippon Soken Inc エンジンの燃料気化促進装置
JPH0361660A (ja) * 1989-07-28 1991-03-18 Suzuki Motor Corp エンジンの始動補助装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 217 (M - 1120) 4 June 1991 (1991-06-04) *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 137 (M - 222) 15 June 1983 (1983-06-15) *

Also Published As

Publication number Publication date
DE4106581A1 (de) 1992-09-03

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