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DE241451C - - Google Patents

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Publication number
DE241451C
DE241451C DENDAT241451D DE241451DA DE241451C DE 241451 C DE241451 C DE 241451C DE NDAT241451 D DENDAT241451 D DE NDAT241451D DE 241451D A DE241451D A DE 241451DA DE 241451 C DE241451 C DE 241451C
Authority
DE
Germany
Prior art keywords
compression
cylinders
air
cylinder
purging
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.)
Active
Application number
DENDAT241451D
Other languages
German (de)
Publication of DE241451C publication Critical patent/DE241451C/de
Active 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
    • F02N9/00—Starting of engines by supplying auxiliary pressure fluid to their working chambers
    • F02N9/04—Starting of engines by supplying auxiliary pressure fluid to their working chambers the pressure fluid being generated otherwise, e.g. by compressing air
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D39/00—Other non-electrical control
    • F02D39/04—Other non-electrical control for engines with other cycles than four-stroke, e.g. two-stroke
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 46 c. GRUPPECLASS 46 c. GROUP

durch Kompression.by compression.

Patentiert im Deutschen Reiche vom 24. Februar 1910 ab.Patented in the German Empire on February 24, 1910.

Zweitaktmaschinen, welche mit Brennstoffeinspritzung und Zündung durch Kompression arbeiten, zeigen die Eigentümlichkeit, daß beim Anlassen infolge der geringen Tourenzahl und der dadurch bedingten verhältnismäßig längeren Zeit, während deren die Spülventile bzw. Spülschlitze und die Auspuffschlitze geöffnet sind, und des dadurch bedingten geringeren Anfangsdruckes bei BeginnTwo-stroke engines with fuel injection and ignition by compression work, show the peculiarity that when starting due to the low number of revolutions and the resulting relatively longer time during which the flushing valves or scavenging slots and the exhaust ports are open, and the resulting lower initial pressure at the beginning

ίο der Kompression letztere nicht die Höhe erreicht, welche sie bei normalen Tourenzahlen und normalem Arbeiten der Maschine besitzt. Solche Maschinen sind infolgedessen nur schwer in Betrieb zu setzen, da infolge der geringeren Anfangskompression auch die Endkompression und Endtemperatur herabgesetzt wird, und der eingestäubte Brennstoff, namentlich wenn er schwer brennbarer Natur ist, somit nicht oder nur unvollständig verbrennt.ίο the compression the latter does not reach the height which she has with normal numbers of revolutions and normal working of the machine. As a result, such machines are difficult to put into operation because of the lower level Initial compression also the final compression and final temperature is reduced, and the dusted fuel, namely if it is of a flame-retardant nature, i.e. does not burn or burns only incompletely.

Dieser Übelstand läßt sich nun dadurch beseitigen, daß beim Anlassen der Maschine vor der Kompression eine größere Luftmenge in den Verbrennungsraum eingeführt oder ein höherer Luftdruck in diesem als bei normalem Betrieb erzeugt wird, wodurch die zur Verbrennung des Brennstoffes erforderliche Endkompression und Endtemperatur auch beim Anlassen der Maschine sicher erreicht wird. Gegenstand der Erfindung bildet eine besondere Ausführung dieses Verfahrens bei Mehrzylinder-Zweitaktmaschinen und besteht darin, daß ein oder mehrere Zylinder von der gemeinschaftlichen Spülluftleitung abschaltbar eingerichtet sind, so daß die gesamte von den Spülpumpen geförderte Luft nur durch eine geringere Zahl von Zylindern hindurchgepreßt wird und nur diese zum Anlaufen und Einleiten der Verbrennung benutzt werden, während die von der Spülluft abgesperrten Zylinder eventuell als Anlaßzylinder mit Druckluft als Treibmittel verwendet werden können.This inconvenience can now be eliminated by starting the machine a larger amount of air is introduced into the combustion chamber prior to compression or a higher air pressure is generated in this than during normal operation, which leads to combustion of the fuel required final compression and final temperature is safely reached even when starting the engine. The subject of the invention is a special embodiment of this method in multi-cylinder two-stroke engines and consists in that one or more cylinders from the common The scavenging air line can be switched off so that all of the air conveyed by the scavenging pumps only passes through a smaller number of cylinders is pressed through and only these for starting and Initiation of combustion can be used while being shut off from the purge air Cylinder can possibly be used as a starting cylinder with compressed air as a propellant.

Claims (1)

Patent-Anspruch:Patent claim: Mehrzylinder-Zweitaktmaschine mit Zündung des eingeführten Brennstoffes durch Kompression, bei der das Anlassen durch Einführung von Druckluft in alle Zylinder erfolgt, dadurch gekennzeichnet, daß die der gemeinschaftlichen Spülluftleitung zuströmende Spülluft während des Anlassens nur einem Teil der Zylinder oder nur einem Zylinder zugeführt wird, um die für die gewünschte Endkompression und Endtemperatur erforderliche Anfangskompression durch Vergrößerung .der Spülluftmenge oder des Spüldruckes in diesen Zylindern zu erzielen.Multi-cylinder two-stroke engine with ignition of the imported fuel Compression, which involves starting by introducing compressed air into all cylinders takes place, characterized in that the common scavenging air line flowing towards Purge air only for some of the cylinders or only during cranking is fed to a cylinder in order to obtain the initial compression required for the desired final compression and final temperature by increasing the amount of purging air or the purging pressure in these cylinders to achieve.
DENDAT241451D Active DE241451C (en)

Publications (1)

Publication Number Publication Date
DE241451C true DE241451C (en)

Family

ID=500746

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT241451D Active DE241451C (en)

Country Status (1)

Country Link
DE (1) DE241451C (en)

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