EP0916820A1 - Procédé d'actionnement d'un moteur à combustion à pétrole et moteur pour l'exécution de ce procédé - Google Patents

Procédé d'actionnement d'un moteur à combustion à pétrole et moteur pour l'exécution de ce procédé Download PDF

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Publication number
EP0916820A1
EP0916820A1 EP97810859A EP97810859A EP0916820A1 EP 0916820 A1 EP0916820 A1 EP 0916820A1 EP 97810859 A EP97810859 A EP 97810859A EP 97810859 A EP97810859 A EP 97810859A EP 0916820 A1 EP0916820 A1 EP 0916820A1
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EP
European Patent Office
Prior art keywords
gasoline
cylinder
engine
gasoline engine
petrol
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.)
Withdrawn
Application number
EP97810859A
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German (de)
English (en)
Inventor
Michael May
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.)
Flamina Holding AG
Original Assignee
Flamina Holding AG
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 Flamina Holding AG filed Critical Flamina Holding AG
Priority to EP97810859A priority Critical patent/EP0916820A1/fr
Publication of EP0916820A1 publication Critical patent/EP0916820A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F02B7/00—Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel
    • F02B7/02—Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel the fuel in the charge being liquid
    • 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
    • F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
    • F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber

Definitions

  • the present application relates to a method for Operation of a petrol engine according to the generic term of Claim 1 and a gasoline engine to carry out of the procedure.
  • Gasoline engines also Otto engines according to their inventor have been known for over 100 years. All Gasoline engines usually have one cylinder unit at least one spark plug, which the mixture at best time ignites, because petrol, in Contrary to diesel fuel, a less ignitable Is fuel. So far it was not possible operate a gasoline engine as a diesel, d. H. without To use spark plugs, as is the case with the diesel engine because with a compression ratio of over 12.5: 1 start uncontrolled autoignition that leads to knocking lead that are no longer tolerable in an engine.
  • the present invention is based on the knowledge that it is possible by appropriate timing of the Introducing and compacting an operation of a Bring gasoline engine that works without spark plugs and usually no throttle bodies for Power regulation needed.
  • petrol a usually volatile mixture, which generally consists of quite a number various hydrocarbon compounds and u. a. can also contain alcohol.
  • inferior petrol or petrol mixtures with lower octane numbers than, for example, at petrol pumps considered available, that is, fuels using much less effort in the refinery can be and that without unwanted combustion processes, such as B. knocking can be used. That means with In other words, a reduction in the octane requirement of the Gasoline engine also within the scope of the present invention is realized.
  • the gasoline engine in the context of the present invention is generally about a reciprocating piston internal combustion engine at least one cylinder unit in a known manner Crankshaft, crankcase, connecting rod, piston, cylinder, Cylinder head, intake and exhaust elements and Has fuel supply and metering. in the further this machine is simplified as a petrol engine designated.
  • Combustion process can be called that composed of the use of gasoline like this is known on the one hand in so-called Otto engines and on the other hand, from the self-ignition of the mixture, like this is used in so-called diesel engines, whereby the combustion processes for both the Otto engine and the Diesel engine can be assumed to be known.
  • the first area is the subset TM1, which in this case already in the cylinder chamber during the output stroke is introduced.
  • the larger area is the representation the second and usually larger subset TM2, which in the Area of the top dead center position of the piston introduced becomes.
  • the first subset is the same Injector introduced, with which the second subset TM2 is to be introduced.
  • this Procedure in Figure 1 with the surface 1 is shown, see also Figure 2.
  • the subset TM1 can be known Introductory means such.
  • the process of introducing the first subset TM1 is completed at the latest when a second predetermined Partial quantity TM2 by means of injection means and in the same way as is known in diesel engines, e.g. B. also by means of "common rail", in the combustion chamber of the petrol engine or the Cylinder unit is introduced.
  • This will help sufficient early introduction of the first subset - e.g. B. already during the intake stroke or at the beginning of the Compression cycle - during and especially in the second Half of the compression stroke of the cylinder unit
  • Subset TM1 with air pre-oxidation processes imposed, as mentioned in the two above Literature examples are described.
  • pre-combustion reactions which without external ignition means and only by the action of Temperature and pressure the emergence of a so-called cool Cause flame and with further compression to Can cause the charge or the mixture to self-ignite, being the first subset of the total per work cycle the intended amount of fuel is so small that no knocking damage harmful to the cylinder unit can occur, but numerous in the combustion chamber Pre-combustion and partial combustion molecules are created.
  • TM2 atomized second predetermined subset TM2 of the Gasoline
  • FIG. 2 is a schematically shown combustion chamber configuration shown in the compression cycle.
  • cylinder 2 moves a piston 3, the piston crown 4 a Combustion chamber trough 5, from a lower Dead center position UT in the direction of the top dead center position OT.
  • He approaches the cylinder head 6, in which at least one injection nozzle 7 and preferably also one Glow plug such as a glow plug 8 is arranged or are.
  • injection nozzle 7 and preferably also one Glow plug such as a glow plug 8 is arranged or are.
  • On the representation of piston rings, oil control rings, Piston pin etc. as well as cylinder head gasket, Screw connection, inlet and outlet valves, channels, Cooling ducts, etc. has been used to emphasize the Essentially waived.
  • the injection nozzle 7 is comparatively small Beam opening angle ⁇ and can be a hollow jet cone, if necessary also form a full jet cone or also be designed as a multi-jet cone.
  • the first part of the petrol is in the middle piston position TM1 partly as a film on the trough surface shown and designated 9. Another part of the TM1 is due to the temperatures of the trough wall and the compressed air evaporating and still one Another part of the TM1 already forms the one according to the invention desired combustion products and later ignition cores 10 and are indicated by dots.
  • the second subset TM2 injected and atomized and burned according to the now numerous existing ignition cores without annoying ignition delay.
  • the first subset of the gasoline with the same Injectors are used for the introduction of the second Subset are provided, but preferably more time upstream than is customary in diesel engines, whereby also the injector with lower thermal load is exposed and therefore less possible Coking is exposed. It can be for example around known two-spring nozzles or around electronically controlled nozzles that work right into the Range of over 1,000 bar injection pressure can work.
  • glow plug e.g. B. glow plug to provide as they is known in diesel engines, this glow plug preferably also during the warm-up process and / or can remain partially heated in the partial load range.
  • the method according to the invention also allows gasolines with lower octane numbers, d. H. also so-called use inferior petrol or petrol mixtures, the ratio of the first to the second subset then also depends on the type of gasoline mixture.
  • the Gasoline engine according to this invention usually needs no throttle valve on the carburetor because of the power regulation only by changing the respective total quantity MG.
  • the total amount of gasoline is the present gasoline engine quantity-controlled and not filling-controlled like this is the case with Otto engines. Because the described Combustion process is not knock limited, it is suitable also for supercharged petrol engines, e.g. B. with Turbochargers or with pressure wave superchargers.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
EP97810859A 1997-11-11 1997-11-11 Procédé d'actionnement d'un moteur à combustion à pétrole et moteur pour l'exécution de ce procédé Withdrawn EP0916820A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97810859A EP0916820A1 (fr) 1997-11-11 1997-11-11 Procédé d'actionnement d'un moteur à combustion à pétrole et moteur pour l'exécution de ce procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97810859A EP0916820A1 (fr) 1997-11-11 1997-11-11 Procédé d'actionnement d'un moteur à combustion à pétrole et moteur pour l'exécution de ce procédé

Publications (1)

Publication Number Publication Date
EP0916820A1 true EP0916820A1 (fr) 1999-05-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810859A Withdrawn EP0916820A1 (fr) 1997-11-11 1997-11-11 Procédé d'actionnement d'un moteur à combustion à pétrole et moteur pour l'exécution de ce procédé

Country Status (1)

Country Link
EP (1) EP0916820A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB878278A (en) * 1960-03-08 1961-09-27 Inst Francais Du Petrole Improvements in or relating to the operation of compression ignition engines
US4539948A (en) * 1984-05-11 1985-09-10 General Motors Corporation Two-cycle diesel engine and method for methanol and like fuel operation
WO1986004111A1 (fr) * 1985-01-05 1986-07-17 John Heath Greenhough Moteur a combustion interne
EP0236057A2 (fr) * 1986-02-25 1987-09-09 Coventry University Moteur à combustion interne
JPH09217641A (ja) * 1996-02-09 1997-08-19 Denso Corp 内燃機関の燃料噴射制御装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB878278A (en) * 1960-03-08 1961-09-27 Inst Francais Du Petrole Improvements in or relating to the operation of compression ignition engines
US4539948A (en) * 1984-05-11 1985-09-10 General Motors Corporation Two-cycle diesel engine and method for methanol and like fuel operation
WO1986004111A1 (fr) * 1985-01-05 1986-07-17 John Heath Greenhough Moteur a combustion interne
EP0236057A2 (fr) * 1986-02-25 1987-09-09 Coventry University Moteur à combustion interne
JPH09217641A (ja) * 1996-02-09 1997-08-19 Denso Corp 内燃機関の燃料噴射制御装置

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
"KRAFTFAHRTECHNISCHES TASCHENBUCH", 1984, BOSCH, 19
J.M. MASON, H.E. HESSELBERG: "ENGINE KNOCK AS INFLUENCED BY PRECOMBUSTIO REACTIONS", SAE TRANSACTIONS, vol. 62, 1954, pages 141-150
J.M.MASON,JR AND H.E.HESSELBERG: "ENGINE KNOCK AS INFLUENCED BY PRECOMBUSTION REACTIONS", SAE TRANSACTIONS, vol. 61, 6 November 1953 (1953-11-06), pages 141 - 150, XP002060396 *
M.V. CORZILIUS ET AL.: "SOME FACTORS AFFECTING PRECOMBUSTION REACTIONS IN ENGINES", SAE TRANSACTION, vol. 61, 1952, pages 386-401
M.W.CORZILIUS,D.R.DIGGS, AND D.L.PASTELL: "SOME FACTORS AFFECTINGPRECOMBUSTION REACTIONS IN ENGINES", SAE TRANSACTIONS, vol. 61, 6 November 1952 (1952-11-06), pages 386 - 401, XP002060397 *
MIKULIC L A ET AL: "SEQUENTIELLE EINSPRITZSTRATEGIEN FUER VERBRAUCHSOPTIMIERTE OTTOMOTORKONZEPTE", MTZ MOTORTECHNISCHE ZEITSCHRIFT, vol. 51, no. 7 / 08, 1 July 1990 (1990-07-01), pages 286 - 293, XP000147933 *
PATENT ABSTRACTS OF JAPAN vol. 097, no. 012 25 December 1997 (1997-12-25) *

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