EP0727013A1 - Moteur a combustion interne - Google Patents

Moteur a combustion interne

Info

Publication number
EP0727013A1
EP0727013A1 EP94931022A EP94931022A EP0727013A1 EP 0727013 A1 EP0727013 A1 EP 0727013A1 EP 94931022 A EP94931022 A EP 94931022A EP 94931022 A EP94931022 A EP 94931022A EP 0727013 A1 EP0727013 A1 EP 0727013A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
working
piston
combustion engine
internal combustion
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Withdrawn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
EP94931022A
Other languages
German (de)
English (en)
Inventor
Max Liebich
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 EP0727013A1 publication Critical patent/EP0727013A1/fr
Withdrawn legal-status Critical Current

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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • F02B33/10—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder
    • 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

Definitions

  • the invention relates to an internal combustion engine with a working cylinder, in which a working piston is movable up and down, which is connected via a piston rod to a second piston, which is movable up and down in a supercharger cylinder, the common piston rod being connected to the crank mechanism of the Internal combustion engine is connected and corresponding inlet, outlet and connecting channels are provided on the working cylinder and the loader cylinder.
  • Such an internal combustion engine is known from GB-PS 1 467 394 (Fig. 6).
  • a cylinder body is closed by a cylinder head and divided into a working cylinder, a supercharger cylinder and a crankshaft housing by first and second partition walls, wherein respective pistons are arranged in the working cylinder and the supercharger cylinder and are connected to the crank mechanism via a common piston rod .
  • an air inlet opening provided with a valve which enables a flow into the loader cylinder and an air outlet line are provided on the loader cylinder in the vicinity of the top dead center and are connected via a connecting line to the working cylinder at a point such that the air inlet opening in the working cylinder at the bottom Dead center of the working piston is released, as well as an exhaust duct, which is also arranged in the working cylinder.
  • a fresh gas mixture is introduced into the loader cylinder below the via a check valve which enables flow into the loader cylinder Supercharged piston.
  • This inlet opening for the mixture is arranged near the bottom dead center of the supercharger piston and is closed by the latter at bottom dead center.
  • the inlet opening is also connected via a line to the line connecting the space above the supercharger piston to the inlet opening of the working cylinder.
  • the invention has for its object to provide an internal combustion engine of the type mentioned, which has a further improved exhaust gas behavior. This object is achieved by the features specified in claim 1.
  • the inventive design of the internal combustion engine ensures perfect flushing of the burned mixture at the bottom dead center of the working piston due to the fresh gas mixture flowing from the charger cylinder into the working cylinder with increased pressure. Since the fresh gas mixture is fed to the working cylinder with increased pressure, suction losses are avoided, and the inlet slot of the working piston, which is closed and opened by the working piston, can have a very low height and thus improved controllability.
  • the region of the working cylinder lying below the working piston is connected to the crank gear chamber via a connecting channel and an oil atomizer, which is provided with an air inlet opening, via which air is sucked in when the working piston moves in the direction of the top dead center and a corresponding amount of air via the
  • Connection channel with oil enrichment is introduced into the space below the working piston.
  • This space below the working piston can be connected to the combustion chamber via an overflow channel when the working piston clears the outlet slot during its movement towards bottom dead center. This results in an additional purging of the working cylinder with fresh air enriched with only a small amount of oil before the fresh gas mixture is introduced into the working cylinder.
  • This connecting channel from the crank gear housing can also be connected to the loader cylinder via a further inlet slot, which opens into the region of the upper end of the loader cylinder and lubricates the loader piston.
  • a further inlet slot which opens into the region of the upper end of the loader cylinder and lubricates the loader piston.
  • the fuel / air mixture suddenly flows into the vacuum chamber formed by the supercharger. This results in a more effective and low-loss fresh gas supply to the working cylinder.
  • the fuel / air mixture is swirled twice, which significantly increases the ignition efficiency and improves combustion, so that hardly any unburned fuel / oil particles get into the exhaust duct.
  • the common piston rod of the working and the loading piston leads in a well-sealed manner through two bores in the partitions between the working and loading cylinders, or between the loading cylinder and crankcase, while being rigidly connected to the two pistons .
  • the pistons are not subject to a “tilting movement 1” as in conventional piston machines, as a result of which the seal between the piston and the cylinder wall is significantly improved and the wear and the running noise are reduced. As a result, the pistons and cylinders can be kept much lower, which leads to a reduction in weight.
  • the openings of the channels for the fresh air supply from the crankcase into the working and loading cylinders are placed so that a part of this fresh air mixed with oil is pressed back into the crankcase.
  • the oil quantity absolutely necessary for the lubrication of the cylinders / pistons can be controlled by the oil sprayer or oil separator.
  • This construction of the internal combustion engine is also advantageously suitable for use in an internal combustion engine with rotating cylinders, as described in DE-Al-43 37 668 by the same applicant with the same filing date, preferably two cylinders arranged symmetrically with respect to the cylinder axis of rotation with an associated one Working pistons are provided which are connected on a common piston rod to the loading piston arranged between the working pistons in a loading chamber. The supercharger piston is then connected to the crank of the crank mechanism of this internal combustion engine via an output member.
  • This output member can either be a pin extending through a slot in the loader cylinder wall, the slot normally being closed by the loader piston in each of its positions, or a further piston rod can be connected to the loader piston if the loader cylinder has a correspondingly large diameter, wherein the further piston rod extends through a sealed bore in the end faces of the loader cylinder and is connected to the crank mechanism.
  • Such an arrangement with two working cylinders, between which a common supercharger cylinder is arranged, the two working pistons being arranged at the ends of a piston rod, on the central region of which the supercharger piston is arranged, is of course also suitable for an engine with stationary cylinders.
  • the embodiment of the internal combustion engine shown in the drawing comprises a working cylinder, generally designated I, a supercharger cylinder, generally designated II, and a crankcase, generally designated III, which are arranged one above the other.
  • a piston 2 is arranged in the working cylinder I, which is connected via a piston rod 3 to a piston 10 arranged in the loading cylinder II and then via a bearing 18 to the connecting rod 16 of a crank mechanism 14 with the counterweight 15.
  • the loader cylinder II preferably has a cylinder bore with a larger diameter than the cylinder bore of the working cylinder I in order to achieve better compression and an improved suction process in the manner described below.
  • An outlet channel 4 for combustion gases is arranged in the working cylinder and is closed by the working piston 2 until it has almost reached its bottom dead center.
  • the outlet opening of a flushing channel 8 which can also be closed in the working piston 2, the other end of which opens into the working cylinder I at the lower end thereof.
  • an overflow channel 6 opens into the working cylinder via an inlet opening 5 at a point which is only released by the working piston 2 when bottom dead center is reached.
  • This flushing channel 6 is connected at its other end to the lower end of the loading cylinder II.
  • another overflow duct 7 opens into the working cylinder I at a point which is at a certain distance below the lower edge of the working piston 2 when it is at its top dead center.
  • This further overflow channel 7 opens at its other end into the crankcase III, an oil atomizer being arranged at this end, which part of the oil in the crankcase III together with air into the working cylinder I and via another line to be explained in the Loader cylinder II initiates.
  • an inlet duct 11 for the fresh gas mixture opens into the loader cylinder II, this inlet duct 11 being arranged at a point which is only released by the loader piston 10 in its top dead center position.
  • Working mixture 2 burned mixture and presses the two pistons 2, 10 downward, whereby air located below the working piston 2 and fresh gas mixture located below the charger piston 10 is compressed. As soon as the working piston 2 releases the outlet channel 4 and the flushing channel 8, on the one hand the burned gases emerge from the outlet channel 4 and at the same time the air compressed below the working piston 2 is moved via the channel 8 into the space above the working piston 2 and leads to purging of the combustion chamber.
  • the fresh gas mixture compressed below the supercharger piston can reach the combustion chamber via the overflow channel 6 and the inlet channel 5 when the working piston 2 is near bottom dead center, this fresh gas mixture being introduced into the combustion chamber at high pressure.
  • the loader cylinder 10 has a considerably larger diameter than the working cylinder 2, a considerably increased amount of fresh gas mixture is sucked in, which is already considerably pre-compressed when it is transferred to the combustion chamber.
  • the precompressed fresh gas mixture is then compressed again by the working piston 2, which results in a compressor effect which leads to a high efficiency of the internal combustion engine.
  • the inlet slots 5 can be of low height, so that there is a more precise control option.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Dans un moteur à combustion interne comportant au moins un cylindre de travail (I), un piston de travail (2) montant et descendant dans ce dernier est relié par une tige de piston à un deuxième piston (10) montant et descendant dans un cylindre (II) de compresseur d'alimentation. La tige de piston commune est reliée au mécanisme à manivelle du moteur à combustion interne et des conduits d'admission, d'échappement et de communication correspondants sont prévus sur le cylindre de travail et celui du compresseur. Le conduit d'admission (11) débouche dans la paroi du cylindre de compresseur (II) en un point dégagé par le piston (10) du compresseur au point mort supérieur du piston de travail (2) ou du piston (10) du compresseur. Entre le cylindre de travail (I) et le cylindre de compresseur (II), un conduit de communication pour mélange de combustion (6) relie une ouverture de sortie (12), située sur l'extrémité correspondant au point mort inférieur du cylindre de compresseur (II), à une fente d'admission (5) se trouvant dans le cylindre de travail (I) et dégagée au point mort inférieur du piston de travail (2).
EP94931022A 1993-11-04 1994-10-31 Moteur a combustion interne Withdrawn EP0727013A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4337670A DE4337670C2 (de) 1993-11-04 1993-11-04 Verbrennungsmotor
DE4337670 1993-11-04
PCT/EP1994/003586 WO1995012753A1 (fr) 1993-11-04 1994-10-31 Moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP0727013A1 true EP0727013A1 (fr) 1996-08-21

Family

ID=6501807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94931022A Withdrawn EP0727013A1 (fr) 1993-11-04 1994-10-31 Moteur a combustion interne

Country Status (4)

Country Link
US (1) US5694891A (fr)
EP (1) EP0727013A1 (fr)
DE (1) DE4337670C2 (fr)
WO (1) WO1995012753A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446478C2 (de) * 1994-12-23 1999-07-08 Hammerl Sabine Erika Schmiersystem für einen Verbrennungsmotor
US5884590A (en) * 1997-09-19 1999-03-23 Minculescu; Mihai C. Two-stroke engine
US6067952A (en) * 1998-12-10 2000-05-30 Brunswick Corporation Cylinder bore lubrication with residual oil
DE102005041992A1 (de) * 2005-09-05 2007-03-15 Schabinger, Günter Wilhelm Brennkraftmaschine
US7159544B1 (en) 2005-10-06 2007-01-09 Studdert Andrew P Internal combustion engine with variable displacement pistons
AU2006230688B2 (en) * 2005-10-20 2012-02-02 James Anderson Engine
US7428886B1 (en) * 2007-01-26 2008-09-30 Minculescu Mihai C Two-cycle engine and compressor
RU2500908C2 (ru) * 2012-02-29 2013-12-10 Виктор Васильевич Казаков Прямодействующий симметричный двигатель внутреннего сгорания
JP5997790B2 (ja) * 2015-02-09 2016-09-28 本田技研工業株式会社 内燃機関の潤滑装置
US10753308B2 (en) 2017-03-30 2020-08-25 Quest Engines, LLC Internal combustion engine
US10590813B2 (en) 2017-03-30 2020-03-17 Quest Engines, LLC Internal combustion engine
US10526953B2 (en) 2017-03-30 2020-01-07 Quest Engines, LLC Internal combustion engine
US10598285B2 (en) 2017-03-30 2020-03-24 Quest Engines, LLC Piston sealing system
US10465629B2 (en) 2017-03-30 2019-11-05 Quest Engines, LLC Internal combustion engine having piston with deflector channels and complementary cylinder head
US11041456B2 (en) 2017-03-30 2021-06-22 Quest Engines, LLC Internal combustion engine
US10590834B2 (en) * 2017-03-30 2020-03-17 Quest Engines, LLC Internal combustion engine
US10989138B2 (en) 2017-03-30 2021-04-27 Quest Engines, LLC Internal combustion engine
KR102468662B1 (ko) 2017-04-28 2022-11-18 퀘스트 엔진스, 엘엘씨 가변 체적 챔버 장치
WO2018204684A1 (fr) 2017-05-04 2018-11-08 Quest Engines, LLC Chambre à volume variable pour interaction avec un fluide
US10808866B2 (en) 2017-09-29 2020-10-20 Quest Engines, LLC Apparatus and methods for controlling the movement of matter
US11134335B2 (en) 2018-01-26 2021-09-28 Quest Engines, LLC Audio source waveguide
US10753267B2 (en) 2018-01-26 2020-08-25 Quest Engines, LLC Method and apparatus for producing stratified streams
US10690043B2 (en) 2018-04-18 2020-06-23 Boyesen, Inc. Two-stroke engine and components thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB397824A (en) * 1930-11-21 1933-08-31 Selco Motor Company Aktiebolag Improvements in and relating to internal combustion engines
US2381832A (en) * 1943-05-08 1945-08-07 Mansoff Arthur Percival Internal-combustion engine
US3053342A (en) * 1959-03-18 1962-09-11 Mansoff Arthur Percival Internal combustion engine
DE2308127C3 (de) * 1973-02-19 1979-09-06 Walter 2105 Seevetal Franke Zweitaktbrennkraftmaschine mit zwei bzw. drei Kompressionsräumen
FR2384110A1 (fr) * 1977-03-16 1978-10-13 Bourguignon Pierre Perfectionnements apportes aux moteurs a deux temps
US4858571A (en) * 1985-10-25 1989-08-22 Yang Tai Her Liquid pump driven by a two-cycle, dual piston internal combustion engine
EP0263117A1 (fr) * 1986-02-17 1988-04-13 URQUHART, Robert Moteur a deux temps suralimente
DE3715750A1 (de) * 1987-05-12 1988-11-24 Joern Martens Verbrennungskraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9512753A1 *

Also Published As

Publication number Publication date
US5694891A (en) 1997-12-09
DE4337670C2 (de) 1995-10-05
WO1995012753A1 (fr) 1995-05-11
DE4337670A1 (de) 1995-05-18

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