EP3118410A1 - Machine a piston elevateur - Google Patents

Machine a piston elevateur Download PDF

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Publication number
EP3118410A1
EP3118410A1 EP16001514.5A EP16001514A EP3118410A1 EP 3118410 A1 EP3118410 A1 EP 3118410A1 EP 16001514 A EP16001514 A EP 16001514A EP 3118410 A1 EP3118410 A1 EP 3118410A1
Authority
EP
European Patent Office
Prior art keywords
piston
main
reciprocating
engine
dead center
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Withdrawn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
EP16001514.5A
Other languages
German (de)
English (en)
Inventor
Kurt Koch
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3118410A1 publication Critical patent/EP3118410A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F02B75/30—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with one working piston sliding inside another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F01B7/20—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft

Definitions

  • the invention relates to a reciprocating engine.
  • a reciprocating engine is a fluid energy machine in which a piston reciprocates periodically in a cylinder (translational movement), the movement of the piston being transmitted to a crankshaft via a connecting rod.
  • the reciprocating engine may be formed as a work machine that receives energy in the form of mechanical work, or the reciprocating engine may be configured as an engine that converts an energy form such as thermal or electrical energy into mechanical energy or work.
  • the present invention has for its object to provide an improved reciprocating engine.
  • the reciprocating piston engine according to the invention has a main piston with a passage in which a slave piston is arranged to be displaceable. Between the movement of the main piston between its top dead center and bottom dead center and the movement of the slave piston between its top dead center and bottom dead center is a phase offset, which can lag the main piston of the slave piston.
  • the invention is based on the finding that an improvement in the combustion of fuel can be achieved with the reciprocating engine, when first precompressed by a movement of the slave piston in the direction of its top dead center, a fuel / combustion air mixture and then by a movement of the main piston in Direction to the top dead center toward the precompressed fuel / combustion air mixture can be further compressed.
  • the slave piston serves as a compressor piston and thus causes an increase in performance of the reciprocating engine, similar to compressor or turbo charged reciprocating engines.
  • the main piston has a main piston stroke
  • the sub-piston has a sub-piston stroke, wherein the sub-piston stroke is greater than the main piston stroke.
  • the phase offset is in a range of 30 ° to 40 °, in particular substantially in the range of 35 °.
  • the term "essentially” is understood to be within the usual production limits.
  • the precompression caused by the phase offset takes a period of time, e.g. 35 ° / 360 ° of the period of rotation of the crankshaft, that is slightly more than a sixth of the rotation period, which requires the main piston for the path from its bottom dead center to its top dead center and back again.
  • a small portion of the available energy is used for pre-compression, and most of the energy is available at the crankshaft of the reciprocating engine for picking.
  • the main piston is assigned a main combustion chamber and the secondary piston has an auxiliary combustion chamber.
  • a further increase in performance of the reciprocating engine can be achieved because after the end of pre-compression, further compression and subsequent ignition of the fuel / combustion air mixture can also be a combustion process in the main combustion chamber, which process releases additional forces to drive the reciprocating engine by the expansion of the gas , Furthermore, can be achieved by a double ignition equalization of the barrel of the reciprocating engine.
  • the reciprocating engine can also be designed and operated as a single-cylinder engine.
  • the fuel is used particularly efficiently, since the hot combustion gases do not expand at high speed. This makes it possible to provide particularly efficient slow-moving machines.
  • the secondary combustion chamber is at least partially formed by a depression in the cylinder block of the reciprocating engine, in which the sub-piston at least partially submerge can.
  • a reciprocating engine can be provided with a particularly simple structure, since, for example, ignition of a fuel / combustion air mixture can take place in the main combustion chamber, in which the secondary cylinder dives back out of the depression during a movement in the direction of its bottom dead center and so on Making connection between the main combustion chamber and the secondary combustion chamber, so that the hot combustion gas in the secondary combustion chamber can ignite the fuel / combustion air mixture in the main combustion chamber.
  • a main fuel injection device is associated with the main combustion chamber and a sub-fuel injection device is associated with the secondary combustion chamber.
  • different fuel / combustion air mixtures may be adjusted in the main combustion chamber and the secondary combustion chamber, e.g. to achieve a particularly clean and efficient combustion.
  • different injection timings are realized so as to achieve an even cleaner and more efficient combustion.
  • a further homogenization of the barrel of the reciprocating engine can be achieved.
  • the main fuel injection device for gasoline and the secondary fuel injection device for diesel injection are formed. So a combination operation of two fuel types is possible. Furthermore, the efficiency and thus the efficiency are increased because no high compression for the auto-ignition of a diesel combustion air mixture must be provided. Furthermore, the high combustion temperatures of the gasoline / combustion air mixture ensure near-perfect combustion of the other fuel mixture so that fuel can be saved and combustion is cleaner overall.
  • the passage is circular.
  • the passage in the main piston is particularly easy to manufacture.
  • the passage is arranged centrally in a cylinder end face of the main piston. This further simplifies the production of the passage.
  • a first connecting rod connecting the main piston force transmitting with a crankshaft of the reciprocating engine, wherein the first connecting rod is fixed to a crank pin of the crankshaft, on the crank pin an offset element is fixed with its first end, the offset element in tangential Direction extends and wherein the offset element is connected at its second end to a second connecting rod, which is connected to transmit power to the secondary piston.
  • Fig. 1 shows a reciprocating engine 2, which is formed in the present embodiment as a reciprocating engine, ie as an engine or engine.
  • the reciprocating engine 2 can also be designed as a working machine, for example pump or compressor.
  • the reciprocating engine 2 is an internal combustion engine which operates in the present embodiment according to the four-stroke principle. Alternatively, the reciprocating engine 2 can also operate on the two-stroke principle.
  • the reciprocating engine 2 has a cylinder block 16, in which a main piston 4 is displaceable on a first connecting rod 18 between its top dead center HOT and its bottom dead center HUT.
  • the first connecting rod 18 is fixed to a crankpin 22 of a crankshaft 20 of the reciprocating engine 2, so that an up and down movement of the main piston 4 can be transmitted to the crankshaft 20.
  • the main piston 4 has a passage 8, which is circular in the present embodiment and is arranged centrally in a cylinder end face of the main piston 4.
  • a sub-piston 6 is arranged to be displaceable between its top dead center NOT and its bottom dead center NUT.
  • the secondary piston 6 is connected to transmit power to a second connecting rod 26.
  • the second connecting rod 26, like the first connecting rod 18, is connected to transmit power to the crankshaft 20, but an offset member 24 is disposed between the second connecting rod 26 and the crankshaft 20.
  • the offset element 24 is rotatably connected at its first end to the crank pin 22 of the crankshaft 20 and connected at its second end to the second connecting rod 26 via a further crank pin 30 to transmit power.
  • the offset element 24 extends in the tangential direction T away from a circular path R1 of the crank pin 22.
  • phase offset ⁇ to move the secondary piston 6 between the top dead center NOT and bottom dead center NUT (see Fig. 1 . 3 and 5 ).
  • the phase offset ⁇ may be, for example, in a range of 30 ° to 40 °, based on the angular position of the crankshaft 20. In the present embodiment, the phase offset is 35 °.
  • the main piston 4 has a main piston stroke H1 and the secondary piston 6 has a secondary piston stroke H2, wherein the secondary piston stroke H2 is greater than the main piston stroke H1.
  • two combustion chambers are formed, namely a main combustion chamber 10, which is assigned to the main piston 4, and a secondary combustion chamber 12, which is assigned to the secondary piston 6.
  • the secondary combustion chamber 12 is formed by a recess 14 in the cylinder block 16 of the reciprocating piston engine 2 in the present embodiment. Shortly before reaching its top dead center NOT sub-piston 6 dives into the recess 14 and leaves after exceeding its top dead center NOT on the way to its bottom dead center NUT again the recess 14th
  • the main combustion chamber 10 is associated with a main fuel injection device (not shown) and the sub combustion chamber with a sub fuel injection device (not shown).
  • the main fuel injection device for gasoline and the sub-fuel injection device for diesel injection are formed.
  • the Fig. 2 shows that in the present embodiment, the first connecting rod 18 has two connecting rod elements 28a, 28b, in the extension direction E of Crankshaft 20 are spaced from each other. In the middle between the two connecting rod elements 28a, 28b, the second connecting rod 26 is arranged.
  • gases present in the main combustion chamber 10 and the auxiliary combustion chamber 12 such as e.g. Combustion air, only precompressed by an upward movement of the secondary piston 6 and then further compressed by the main piston 4.
  • a fuel / combustion air mixture e.g. ignited a gasoline / combustion air mixture, e.g. by means of a spark plug (not shown).
  • the gasoline / combustion air mixture may have been formed in the secondary combustion chamber 12 by a direct injection of gasoline by means of an injection nozzle (not shown).
  • another fuel / combustion air mixture e.g. a diesel / combustion air mixture formed, e.g. by a direct injection of diesel by means of an injection nozzle (not shown).
  • the slave piston 6 Upon reaching the first position, the slave piston 6 has left the recess 14 so far that a connection between the secondary combustion chamber 12 and the main combustion chamber 10 is formed. Thus, the further fuel / combustion air mixture in the main combustion chamber 10 is brought to the ignition.
  • both the main piston 4 and the subcrank 6 are displaced downwards in the direction of their respective bottom dead centers HUT, NUT.
  • the reciprocating engine Due to the double ignition a homogenization of the barrel of the reciprocating engine 2 is achieved, so that the reciprocating engine is formed in the present embodiment as a single-cylinder engine. Further, the reciprocating engine 2 is formed in the present embodiment as a slow-speed, i. the speeds are in a range between 60 and 250 revolutions per minute.
  • the fuel i. The gasoline-diesel / combustion air mixture, particularly efficiently implemented, since the hot combustion gases do not expand at high speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
EP16001514.5A 2015-07-16 2016-07-07 Machine a piston elevateur Withdrawn EP3118410A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015005113.8U DE202015005113U1 (de) 2015-07-16 2015-07-16 Hubkolbenmaschine

Publications (1)

Publication Number Publication Date
EP3118410A1 true EP3118410A1 (fr) 2017-01-18

Family

ID=54010550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16001514.5A Withdrawn EP3118410A1 (fr) 2015-07-16 2016-07-07 Machine a piston elevateur

Country Status (2)

Country Link
EP (1) EP3118410A1 (fr)
DE (1) DE202015005113U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106014626A (zh) * 2016-07-12 2016-10-12 魏伯卿 变缸发动机多级套缸变缸装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB299222A (en) * 1927-12-16 1928-10-25 Douglas Joseph Martin Improvements in internal combustion engines
CH560835A5 (en) * 1973-02-19 1975-04-15 Andres Eng Reciprocating sleeve piston motor - with main and auxiliary pistons and con-rods operating on the same crankshaft
FR2542811A1 (fr) * 1983-02-18 1984-09-21 Serrano Sorni Moteur a piston tubulaire
DE4018524A1 (de) * 1990-06-09 1991-12-12 Gerhard Jedamski Vorrichtung zur leichteren ueberwindung des ot und ut bei verbrennungsmotoren mit hilfe eines doppel- oder mehrfachkolbens
DE102006012069A1 (de) * 2006-03-16 2007-09-20 Haroot Teshnehkam Verbrennungsmotor und Kölben für Verbrennungsmotor
FR2904042A1 (fr) * 2006-07-21 2008-01-25 Peugeot Citroen Automobiles Sa Dispositif d'aide au demarrage a froid pour les moteurs a essence

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB299222A (en) * 1927-12-16 1928-10-25 Douglas Joseph Martin Improvements in internal combustion engines
CH560835A5 (en) * 1973-02-19 1975-04-15 Andres Eng Reciprocating sleeve piston motor - with main and auxiliary pistons and con-rods operating on the same crankshaft
FR2542811A1 (fr) * 1983-02-18 1984-09-21 Serrano Sorni Moteur a piston tubulaire
DE4018524A1 (de) * 1990-06-09 1991-12-12 Gerhard Jedamski Vorrichtung zur leichteren ueberwindung des ot und ut bei verbrennungsmotoren mit hilfe eines doppel- oder mehrfachkolbens
DE102006012069A1 (de) * 2006-03-16 2007-09-20 Haroot Teshnehkam Verbrennungsmotor und Kölben für Verbrennungsmotor
FR2904042A1 (fr) * 2006-07-21 2008-01-25 Peugeot Citroen Automobiles Sa Dispositif d'aide au demarrage a froid pour les moteurs a essence

Also Published As

Publication number Publication date
DE202015005113U1 (de) 2015-08-10

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