EP0193183A1 - Moteur à combustion interne à quatre temps - Google Patents

Moteur à combustion interne à quatre temps Download PDF

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Publication number
EP0193183A1
EP0193183A1 EP86102487A EP86102487A EP0193183A1 EP 0193183 A1 EP0193183 A1 EP 0193183A1 EP 86102487 A EP86102487 A EP 86102487A EP 86102487 A EP86102487 A EP 86102487A EP 0193183 A1 EP0193183 A1 EP 0193183A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cylinders
fuel
pistons
overflow
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Withdrawn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
EP86102487A
Other languages
German (de)
English (en)
Inventor
Reinhold Ficht
Manfred Schindler
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.)
Ficht GmbH
Original Assignee
Ficht GmbH
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 Ficht GmbH filed Critical Ficht GmbH
Publication of EP0193183A1 publication Critical patent/EP0193183A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F01B9/023—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft of Bourke-type or Scotch yoke
    • 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
    • F01B9/026—Rigid connections between piston and rod; Oscillating pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/08—Rotary or oscillatory slide valve-gear or valve arrangements with conically or frusto-conically shaped valves
    • 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
    • F02B33/26—Four-stroke engines characterised by having crankcase pumps
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/246—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "pancake" type, e.g. pairs of connecting rods attached to common crankshaft bearing
    • 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
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Definitions

  • the known method has disadvantages in that the charging quality for the individual cylinders is insufficient, particularly in the case of high-speed engines. This fact results from the fact that during the charging cycle, i.e. during the inward stroke of the two pistons, the fresh air or the charge air mixture intended for the respective cylinder must first be accelerated or moved in its or its total quantity by the two pistons, since no noticeable compression could have occurred beforehand because the inlet valve for the cylinder to be charged had already opened during the inward stroke of the two pistons. The inertia of the charge air column to be accelerated then results in loss of charge or loss of charge, which reduces the specific output of the cylinders or the so-called liter output. Furthermore, the fresh air or the charge air mixture is conducted there via the interior of the crankcase, which is also disadvantageous.
  • the object of the invention is therefore to eliminate the disadvantages of the known charging method and to provide a four-stroke internal combustion engine with a charging system that improves the charging capacity, especially in high-speed engines, and in which mixture intake via the crankcase is avoided.
  • the invention relates to a four-stroke internal combustion engine according to the preamble of claim 1.
  • DE-OS 33 15 853 shows a method for operating a four-stroke engine with pairs of opposing cylinders that work 180 ° out of phase.
  • the pistons move in opposite directions and their reciprocating motion is converted into a rotary motion by means of a crank mechanism.
  • the two pistons move outwards at the same time, ie towards the cylinder head, fresh air or fuel-air mixture is drawn into the crankcase via an inflow check valve.
  • the simultaneous inward stroke i.e.
  • This increase in performance is based in particular on the fact that, during the respective work cycle, the piston moving downward, with the aid of the overflow check valve, stores a first subset of the total charge air or the fuel / air mixture in the overflow channel with pre-pressure (overpressure), which is required for the subsequent charging of the cylinder is immediately available, that is, as it were, in front of the combustion chamber, ie in front of the still closed cylinder inlet element. If this is then opened at the start of the charging cycle, the first subset of the charge air or the fuel-air mixture, which is under pre-pressure, flows very quickly into the combustion chamber.
  • pre-pressure overpressure
  • a cranked loop motor complies with the charging system according to the invention in that the individual cylinders can be hermetically sealed against the crankcase.
  • the four-stroke internal combustion engine consists essentially of two opposing cylinders 1 and 2 with attached cylinder heads 3 and 4.
  • a piston 5 and 6 are mounted, which move in a straight line Piston rods 7 and 8 and by a rigidly attached to this crank loop frame 9 are firmly coupled.
  • the crank loop frame includes a link 10, in which a sliding block 11 runs, which engages the crank arm of the crankshaft 12.
  • overflow ducts 15 and 16 are connected to the overflow pipe connections 13 and 14 provided there, each of which leads to a cylinder head inlet 17 and 18, respectively.
  • Flow channels 15 and 16 are controlled by overflow check valves 19 and 20, which open to the overflow channels 15 and 16, but block in the opposite direction.
  • Both the cylinder head inlets 17 and 18 and the cylinder head outlets 21 and 22 are controlled by a rotary valve 23 and 24, respectively.
  • intake ports 25 and 26 which are likewise arranged at the lower end of the cylinders 1 and 2, specifically opposite the overflow pipe ports 13 and 14. They serve for the inflow of fresh air or a fuel-air mixture.
  • Inflow check valves 27 and 28 are also installed in these intake ports 25 and 26. Diaphragm valves known per se serve as check valves.
  • the two-cylinder internal combustion engine which works according to the four-stroke process works as follows: According to FIG. 1 of the drawing, the piston 5 has just finished the compression stroke in cylinder 1 and is at top dead center TDC - crankshaft and rotary valve take the zero position -. During the compression stroke, the piston 5 simultaneously sucked in fresh air (charge air) or a fuel-air mixture via the intake port 25 and the inflow check valve 27 into the lower cylinder chamber 29. The rotary valve 23 closes both the cylinder head inlet 17 and the cylinder head outlet 21 of the cylinder head 3 during the above-described processes. Just before the piston 5 has reached the top dead center TDC, the ignition starts and the combustion of the fuel Air mixture begins.
  • This fresh air quantity or fuel-air mixture quantity is the first partial quantity (1st TM) of the total fresh air or the entire fuel-air mixture to fully charge a cylinder (a cylinder charge) (Fig. 1 and 2).
  • This first subset (1.TM) of fresh air or fuel-air mixture remains pre-compressed in the overflow channel 15 during the subsequent exhaust stroke, in which the piston 5 moves to the top dead center TDC - crankshaft rotation 360 °, rotary slide valve rotation 180 ° -; see. Fig. 3.
  • the overflow channel 15 also the overflow channel 16
  • 2nd TM a second partial quantity of fresh air or charge air or fuel-air mixture is conveyed through the intake port 25 via the inflow check valve 27 into the lower cylinder chamber 29 by negative pressure (FIG. 3).
  • the cylinder 2 works together with its piston 6 with respect to the cylinder 1 with its piston 5 out of phase by 180 °, as is immediately apparent from the drawing in conjunction with the above description.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP86102487A 1985-02-28 1986-02-26 Moteur à combustion interne à quatre temps Withdrawn EP0193183A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3507108 1985-02-28
DE19853507108 DE3507108A1 (de) 1985-02-28 1985-02-28 Viertakt-brennkraftkolbenmaschine

Publications (1)

Publication Number Publication Date
EP0193183A1 true EP0193183A1 (fr) 1986-09-03

Family

ID=6263809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102487A Withdrawn EP0193183A1 (fr) 1985-02-28 1986-02-26 Moteur à combustion interne à quatre temps

Country Status (4)

Country Link
US (1) US4715336A (fr)
EP (1) EP0193183A1 (fr)
JP (1) JPS61205328A (fr)
DE (1) DE3507108A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220200A1 (de) * 1991-06-20 1993-01-21 Mitsubishi Heavy Ind Ltd Viertakt-brennkraftmaschine
FR2710949A1 (fr) * 1993-10-06 1995-04-14 Baltus Elie Moteur ou pompe dont le piston est lié rigidement à un cadre muni d'une fenêtre recevant un maneton de vilebrequin.

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838214A (en) * 1987-06-18 1989-06-13 Barrett George M Internal combustion engine assembly
FR2624910A1 (fr) * 1987-12-16 1989-06-23 Pradom Ltd Procede et dispositif de distribution pour moteur et compresseur volumetriques
DE4007466A1 (de) * 1990-03-09 1991-02-14 Franz Josef Knott Spuel- und schmierverfahren fuer hubkolbenmotoren
DE4011140C2 (de) * 1990-04-06 1999-12-02 Werner Bohne Zweitaktbrennkraftmaschine mit gemischfreier Spülung, regelbarer Ein- und Auslaßvorrichtung, sowie hubwellenfreier Kraftübertragung, in Zweizylinderbauweise
DE19523114A1 (de) * 1995-06-26 1997-01-02 Sandor Nagy Verbrennungsmotor mit Hubkolben und einer Ventilanordnung
GB9719548D0 (en) 1997-09-15 1997-11-19 Stone Timothy Improvements in and relating to internal combustion engines
US20080289488A1 (en) 1999-04-01 2008-11-27 Peter Robert Raffaele Reciprocating fluid machines
US6189493B1 (en) * 1999-07-13 2001-02-20 The United States Of America As Represented By The Administrator Of The United States Environmental Protection Agency Torque balanced opposed-piston engine
AUPR459501A0 (en) * 2001-04-27 2001-05-24 Raffaele, Michael John Improvements in engines and components
WO2012148365A1 (fr) * 2011-04-27 2012-11-01 TOPRAK, Ahmet Moteur à combustion interne facile à produire et à haut rendement
US10012145B1 (en) * 2017-12-01 2018-07-03 Alberto Francisco Araujo Internal combustion engine with coaxially aligned pistons
US10378578B1 (en) 2018-07-13 2019-08-13 Alberto Francisco Araujo Internal combustion engine using yoke assemblies in unopposed cylinder units

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2405016A (en) * 1943-07-21 1946-07-30 William H Cook Piston and cylinder device
FR1434275A (fr) * 1965-02-22 1966-04-08 Mécanisme de transformation de mouvement, adaptable aux machines à pistons
DE1751219A1 (de) * 1968-04-23 1971-05-27 Aspin Frank Metcalfe Drehschieber fuer Brennkraftmaschinen
AU3687978A (en) * 1978-06-06 1979-12-13 Norman George Wheatley Opposed piston internal combustion engine
DE3022901A1 (de) * 1980-06-19 1981-12-24 Helmut 8000 München Pohl Vier-takt-verbrennungsmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140406B (de) * 1956-06-06 1962-11-29 F M Aspin Engines Ltd Hohler Drehschieber mit kegeligem Fuss
US3517652A (en) * 1968-05-10 1970-06-30 Johnson Engine Works Co The Two-cycle engine
SE395301B (sv) * 1971-11-15 1977-08-08 Motoren Forschungs Kg Franke M Fyrtaktsforbrenningsmotor
DE2756308A1 (de) * 1977-12-17 1979-06-21 Motoren Forschungs Gmbh Viertakt-verbrennungskraftmotor
JPS54158513A (en) * 1978-06-02 1979-12-14 Dana Corp Fourrcycle internal combustion engine
US4311119A (en) * 1979-04-05 1982-01-19 Menzies Murray A Internal combustion engines
JPS5844251A (ja) * 1981-09-08 1983-03-15 Mitsubishi Electric Corp 内燃機関用混合気供給装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2405016A (en) * 1943-07-21 1946-07-30 William H Cook Piston and cylinder device
FR1434275A (fr) * 1965-02-22 1966-04-08 Mécanisme de transformation de mouvement, adaptable aux machines à pistons
DE1751219A1 (de) * 1968-04-23 1971-05-27 Aspin Frank Metcalfe Drehschieber fuer Brennkraftmaschinen
AU3687978A (en) * 1978-06-06 1979-12-13 Norman George Wheatley Opposed piston internal combustion engine
DE3022901A1 (de) * 1980-06-19 1981-12-24 Helmut 8000 München Pohl Vier-takt-verbrennungsmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220200A1 (de) * 1991-06-20 1993-01-21 Mitsubishi Heavy Ind Ltd Viertakt-brennkraftmaschine
AU644965B2 (en) * 1991-06-20 1993-12-23 Mitsubishi Jukogyo Kabushiki Kaisha 4-cycle engine
DE4220200C2 (de) * 1991-06-20 2000-09-21 Mitsubishi Heavy Ind Ltd Viertakt-Brennkraftmaschine
FR2710949A1 (fr) * 1993-10-06 1995-04-14 Baltus Elie Moteur ou pompe dont le piston est lié rigidement à un cadre muni d'une fenêtre recevant un maneton de vilebrequin.

Also Published As

Publication number Publication date
DE3507108A1 (de) 1986-08-28
JPS61205328A (ja) 1986-09-11
US4715336A (en) 1987-12-29

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: SCHINDLER, MANFRED

Inventor name: FICHT, REINHOLD