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WO1993018283A1 - Moteur a combustion interne a quatre temps possedant des soupapes rotatives de culasse - Google Patents

Moteur a combustion interne a quatre temps possedant des soupapes rotatives de culasse Download PDF

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Publication number
WO1993018283A1
WO1993018283A1 PCT/BR1993/000007 BR9300007W WO9318283A1 WO 1993018283 A1 WO1993018283 A1 WO 1993018283A1 BR 9300007 W BR9300007 W BR 9300007W WO 9318283 A1 WO9318283 A1 WO 9318283A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotary valves
cylinder head
internal combustion
stroke engine
intake
Prior art date
Application number
PCT/BR1993/000007
Other languages
English (en)
Inventor
Ovidio Alves Lima
Original Assignee
Ovidio Alves Lima
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 Ovidio Alves Lima filed Critical Ovidio Alves Lima
Priority to AU36243/93A priority Critical patent/AU3624393A/en
Publication of WO1993018283A1 publication Critical patent/WO1993018283A1/fr

Links

Classifications

    • 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
    • F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L7/021—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with one rotary valve
    • 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
    • F01L7/16—Sealing or packing arrangements specially therefor
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into 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
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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

Definitions

  • Patent Descriptive Report of the Invention "INTERNAL COMBUSTION FOUR STROKE ENGINE WITH CYLINDER HEAD ROTARY VALVES".
  • the present invention refers to an "Internal Combustion Four-Stroke Engine with Cylinder Head Rotary Valves", of one or more cylinders, and which may operate by the Otto cycle or Diesel cycle.
  • Figure 1 is a schematic cross-section of an "Internal Combustion Four- Stroke Engine with Cylinder Head Rotary Valves";
  • Figure 2 shows the Cylindrical Rotary Valve Axle;
  • Figure 3 is a cross-section of the Cylindrical Rotary Valve;
  • Figure 4 shows the shape of the Cylindrical Rotary Valve Vents;
  • Figure 5 is a detail of the cylinder intake and exhaustion openings; and
  • Figure 6 the piston relief vents.
  • the internal combustion four-stroke engines currently use heads which operate by the alternative principle, i.e., the opening and closing operation of the cylinder is performed by means of an axle of cams which accomplishes an alternate movement to the intake and exhaustion valves, in order to provide the stages of admission, compression, combustion/expansion and scavenging of gases from the inside of the cylinder.
  • This type of head is compounded by a variety of parts, which require thorough accuracy during manufacturing and quality control processes. As a consequence, during operation of the engine, much is required from these parts, making them prone to premature wear, what will result in extensive adjustments and maintenance. Therefore, it can be seen that, with this type of head, costs are high, not only during manufacturing, but also during operation, and it also imposes an increase of passive losses to the engine, caused by friction of a high number of parts, leading to an increase in fuel consumption.
  • cylinder head rotary valves for internal combustion four-stroke engines is a component which can be used in internal combustion four-stroke engines, and which aims to facilitate the intake of the air-fuel mixture, or only air in the case of Diesel engines, and the scavenging of burnt gases from the interior of the cylinder, as well as provide pressure tightness of the combustion chamber during the stages of compression and combustion/expansion, through the use of a single axle of rotary valves, Figure 2, housing the cylindrical rotary valves for exhaustion (23), and admission (25), operating in a rotating movement, and housed horizontally in a head (1) and (2).
  • the technical solution consists in using Cylinder Head Rotary Valves (1) and (2), housed sideways to the motor body (10), i.e., with the intake and exhaustion openings of the head (4), matching the respective intake and exhaustion openings (8), positioned at the upper side of cylinder, close to the combustion chamber (19), not being required, therefore, that the head has the combustion chamber on its base, as previously proposed.
  • the piston scgmental rings (17) overlaps, the intake and exhaustion openings, providing better scaling for the combustion chamber, and preventing the exposure of the sealing surface of the cylindrical rotary valve (32) to the combustion gases, thus avoiding the oil film to bum or its contamination.
  • it may be possible to use several types of piston it is advisable to use the piston with combustion chamber at the head, "Heron Chamber" (19).
  • the cylinder intake and exhaustion openings (8) can be the grating type (41) and (42), having a rectangular, circular or elongated shape (egg- shaped). It can be seen that the general disposition of the head, proposed in the present invention, does not alter the operating principle of the cylindrical rotary valve head, since the ratio of 4:1 (four to one) between the crankshaft rotation and the rotation of the axle of cylindrical rotary valves remains, the movement transmission being by means of a toothed belt.
  • the main advantages that the present invention offers in relation to the proposed component, in the Brazilian Patent Invention 8407384, are the following:
  • the present invention allows for their use, since the cylinder head rotary valves do not require parts with alternate movements with great mechanical properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Moteur à combustion interne à quatre temps possédant des soupapes rotatives de culasse. Le moteur comprend des soupapes rotatives de culasse du type proposé dans le brevet d'invention brésilien 8407384, placées de manière latérale par rapport au corps (10) du moteur, et constituées principalement d'un axe de soupapes rotatives cylindriques logées horizontalement dans le siège d'une paroi cylindrique interne et entourées d'une paroi externe. Le cylindre renferme les orifices d'admission et d'échappement (8, 41, 42) communiquant avec les orifices (7) de culasse. Le piston possède des orifices de détente (43) reliés les uns aux autres et destinés à évacuer les gaz pris au piège dans l'orifice d'admission à la fin du temps d'échappement. Ainsi, à l'instar de la proposition précédente, le rapport de transmission entre la rotation du vilebrequin et celle de l'axe à soupapes rotatives cylindriques est de 4 pour 1. L'invention vise à ce que l'emploi de la culasse à soupapes rotatives dans un moteur à explosion à quatre temps, tant dans le cycle à quatre temps que dans le cycle diesel, devienne possible puisqu'il met en ÷uvre des innovations technologiques appropriées en accord avec les nouvelles tendances technologiques.
PCT/BR1993/000007 1992-03-06 1993-03-04 Moteur a combustion interne a quatre temps possedant des soupapes rotatives de culasse WO1993018283A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU36243/93A AU3624393A (en) 1992-03-06 1993-03-04 Internal combustion four stroke engine with cylinder head rotary valves

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI9200820 1992-03-06
BR929200820A BR9200820A (pt) 1992-03-06 1992-03-06 Motor de combustao interna de quatro tempos com cabecote de valvulas cilindrico rotativos

Publications (1)

Publication Number Publication Date
WO1993018283A1 true WO1993018283A1 (fr) 1993-09-16

Family

ID=4053824

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR1993/000007 WO1993018283A1 (fr) 1992-03-06 1993-03-04 Moteur a combustion interne a quatre temps possedant des soupapes rotatives de culasse

Country Status (2)

Country Link
BR (1) BR9200820A (fr)
WO (1) WO1993018283A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1092842A1 (fr) * 1999-10-15 2001-04-18 CONRADTY, Christoph Moteur à quatre temps muni d'un distributeur rotatif
RU2243387C2 (ru) * 2002-03-04 2004-12-27 Чоповский Борис Петрович Двигатель внутреннего сгорания (варианты)
RU2276734C1 (ru) * 2004-12-07 2006-05-20 Виталий Дмитриевич Корнилов Роторный механизм газораспределения двигателя

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310134A (en) * 1941-10-29 1943-02-02 Vallier Wilfred Fred Rotary valve engine
DE969839C (de) * 1952-05-04 1958-07-24 Augsburg Nuernberg A G Zweigni Kolben mit Rueckfuehrung des OEles, insbesondere bei Brennkraftmaschinen
DE1810556A1 (de) * 1968-11-23 1970-06-04 Guenther Dege Viertakt-Brennkraftmotor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310134A (en) * 1941-10-29 1943-02-02 Vallier Wilfred Fred Rotary valve engine
DE969839C (de) * 1952-05-04 1958-07-24 Augsburg Nuernberg A G Zweigni Kolben mit Rueckfuehrung des OEles, insbesondere bei Brennkraftmaschinen
DE1810556A1 (de) * 1968-11-23 1970-06-04 Guenther Dege Viertakt-Brennkraftmotor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1092842A1 (fr) * 1999-10-15 2001-04-18 CONRADTY, Christoph Moteur à quatre temps muni d'un distributeur rotatif
US6378481B1 (en) 1999-10-15 2002-04-30 Christoph Conradty Four-stroke internal combustion engine with a rotary-spool valve
RU2243387C2 (ru) * 2002-03-04 2004-12-27 Чоповский Борис Петрович Двигатель внутреннего сгорания (варианты)
RU2276734C1 (ru) * 2004-12-07 2006-05-20 Виталий Дмитриевич Корнилов Роторный механизм газораспределения двигателя

Also Published As

Publication number Publication date
BR9200820A (pt) 1993-09-08

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