EP2449227A2 - Moteur à piston double en ligne - Google Patents

Moteur à piston double en ligne

Info

Publication number
EP2449227A2
EP2449227A2 EP10740133A EP10740133A EP2449227A2 EP 2449227 A2 EP2449227 A2 EP 2449227A2 EP 10740133 A EP10740133 A EP 10740133A EP 10740133 A EP10740133 A EP 10740133A EP 2449227 A2 EP2449227 A2 EP 2449227A2
Authority
EP
European Patent Office
Prior art keywords
piston
combustion chamber
double
receptacle
engine according
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.)
Granted
Application number
EP10740133A
Other languages
German (de)
English (en)
Other versions
EP2449227B1 (fr
Inventor
Andreas Ross
Helge Goldenbaum
Jan Schoke
Dirk Tschapke
Arno Pohl
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.)
Fachhochschule Luebeck
Original Assignee
Fachhochschule Luebeck
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 Fachhochschule Luebeck filed Critical Fachhochschule Luebeck
Publication of EP2449227A2 publication Critical patent/EP2449227A2/fr
Application granted granted Critical
Publication of EP2449227B1 publication Critical patent/EP2449227B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Definitions

  • the invention relates to a four-stroke internal combustion engine, designed as
  • Double-piston engine according to the inline principle, in which two pistons sliding into one another move in one cylinder.
  • the object of the invention is to provide an efficient internal combustion engine with a particularly simple and efficient construction.
  • the invention is based on the idea of exploiting the residual pressure, as it can be represented in a p-V diagram, by making available a larger displacement volume during the power stroke.
  • Fig. 1 is a schematic section through the double piston during the four
  • Fig. 2 shows the p-V diagram of a typical gasoline engine with residual volume fraction according to the prior art.
  • the entire working piston consists of two nested pistons, one (outer) piston 1 and the other (inner) piston 3.
  • Fig. Ia sucks the inner small piston 3 through the opening in the outer piston 1, the fuel Air mixture, while the outer piston 1 remains at top dead center.
  • Fig. Ib During the working cycle, Fig. Ic, the upper piston 1 is unlocked by the preferably ring-shaped locking element 2, so that the piston pair 1, 3 with the entire, so enlarged piston area for
  • the entire piston surface can be adjusted in this device so that the residual pressure when opening the exhaust valve can be kept much lower than the known power stroke of a four-stroke gasoline engine.
  • simulation method according to the model of the Gleichraumvones can be shown that the device can be optimized so far that when opening the exhaust valve, the residual pressure in the cylinder chamber corresponds to the ambient pressure, which increases the energy yield of the cycle.
  • the energy gain is shown in Fig. 2, in the diagram area 8 and resulted in
  • the power transmission takes place with known means such as connecting rod 4, crank 5 and crank pin. 7
  • Simulation methods are shown that is expected to maintain a constant friction and uneven running characteristics of the engine are damped by the invention.
  • the simulation model is based on the consideration that the sum of the

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne un moteur à piston double comprenant deux pistons (1, 3) mobiles en sens opposé dans une chambre de combustion. Le moteur à piston double selon l'invention est caractérisé en ce que le diamètre externe d'un piston (1) correspond approximativement au diamètre interne de la chambre de combustion, ce piston (1) étant logé mobile dans la chambre de combustion et présentant sur sa face opposée à la chambre de combustion un logement pour l'autre piston (3). L'autre piston (3) est logé mobile dans le logement du piston (1) et est relié à un arbre par le biais d'une bielle (4). Le piston (1) présente sur sa face frontale opposée à l'autre piston (3) un orifice reliant le logement à la chambre de combustion au-dessus du piston (1) et pouvant être obturé par l'autre piston (3).
EP10740133.3A 2009-07-03 2010-06-14 Moteur à piston double en ligne Not-in-force EP2449227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910031860 DE102009031860A1 (de) 2009-07-03 2009-07-03 Inline-Doppelkolbenmotor
PCT/DE2010/000660 WO2011000342A2 (fr) 2009-07-03 2010-06-14 Moteur à piston double en ligne

Publications (2)

Publication Number Publication Date
EP2449227A2 true EP2449227A2 (fr) 2012-05-09
EP2449227B1 EP2449227B1 (fr) 2013-04-24

Family

ID=43257759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10740133.3A Not-in-force EP2449227B1 (fr) 2009-07-03 2010-06-14 Moteur à piston double en ligne

Country Status (3)

Country Link
EP (1) EP2449227B1 (fr)
DE (1) DE102009031860A1 (fr)
WO (1) WO2011000342A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004981A1 (de) * 2012-03-14 2013-09-19 Fachhochschule Lübeck Ansteuerung für einen Inline-Doppelkolbenmotor
US8893671B2 (en) * 2012-08-22 2014-11-25 Jack R. Taylor Full expansion internal combustion engine with co-annular pistons
CN104632381A (zh) * 2015-01-07 2015-05-20 吕建伟 汽车双活塞变容式发动机
CN106014626A (zh) * 2016-07-12 2016-10-12 魏伯卿 变缸发动机多级套缸变缸装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR652172A (fr) * 1928-01-28 1929-03-05 Perfectionnements aux moteurs à combustion interne
DE2709939A1 (de) 1977-03-08 1978-09-14 Horst Lubbe Doppelkolbenmotor mit zwei ineinander gleitenden kolben
US4164916A (en) * 1978-08-07 1979-08-21 Wuerfel Robert P Variable displacement arrangement in four cycle, reciprocating, internal combustion engine
JPS6336030A (ja) * 1985-12-27 1988-02-16 Watanabe Kikai Kogyo Kk 二重ピストンを備えた内燃機関
DE4006012A1 (de) 1990-02-26 1991-09-05 Horst Dipl Ing Pehlemann Veraenderbarer verdichtungsraum fuer brennkraftmaschinen
US7438028B1 (en) * 2007-04-05 2008-10-21 Edward Lawrence Warren Four stroke engine with a fuel saving sleeve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011000342A2 *

Also Published As

Publication number Publication date
DE102009031860A1 (de) 2011-01-13
WO2011000342A2 (fr) 2011-01-06
WO2011000342A3 (fr) 2011-03-17
EP2449227B1 (fr) 2013-04-24

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