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BR0016930A - Motor de combustão interna de dois tempos - Google Patents

Motor de combustão interna de dois tempos

Info

Publication number
BR0016930A
BR0016930A BR0016930-7A BR0016930A BR0016930A BR 0016930 A BR0016930 A BR 0016930A BR 0016930 A BR0016930 A BR 0016930A BR 0016930 A BR0016930 A BR 0016930A
Authority
BR
Brazil
Prior art keywords
length
piston
lai
engine
inlet
Prior art date
Application number
BR0016930-7A
Other languages
English (en)
Inventor
Bo Carlsson
Hans Stroem
Original Assignee
Electrolux Ab
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 Electrolux Ab filed Critical Electrolux Ab
Publication of BR0016930A publication Critical patent/BR0016930A/pt

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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
    • F02B25/22—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 by forming air cushion between charge and combustion residues
    • 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
    • F02B33/04—Engines with reciprocating-piston pumps; Engines with crankcase pumps with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
    • 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
    • F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

"MOTOR DE COMBUSTãO INTERNA DE DOIS TEMPOS". A presente invenção se refere a um motor de combustão interna de dois tempos de cárter ou de caixa de manivela de limpeza (1) (scavenged = eliminação ou remoção de gases queimados a partir do cilindro de um motor de combustão interna após um tempo de estágio), no qual pelo menos um canal de pistão de passagem de ar, com comprimento (L~ ai~), está disposto entre uma admissão de ar (2) e cada canal de limpeza (31, 31') respectivamente de um número de dutos de transferência (3, 3') com comprimento (L~ s~), a partir do canal de limpeza para o cárter ou a caixa de manivela. A passagem de ar está disposta a partir de uma admissão de ar (2) equipada com uma válvula de restrição (4) controlada por pelo menos um parâmetro de motor, por exemplo, o controle de válvula de regulagem de carburador, a admissão de ar se estende por intermédio de pelo menos um duto de conexão (6, 6') para pelo menos um canal de conexão (8, 8') na parede de cilindro de motor (12), que está disposto de maneira que ele, em conexão com posições de pistão no ponto morto superior, está conectado com padrões de fluxo (10, 10') embutidos no pistão (13), que se estende para a parte superior de um número de dutos de transferência (3, 3'), e cada padrão de fluxo no pistão está disposto de maneira que o recesso (10, 10') no pistão que encontra o respectivo canal de limpeza (31, 31') que está disposto de maneira que ao suprimento de ar é dado um período essencialmente igualmente longo, contado como ângulo de manivela ou tempo, desde que a admissão de motor (22 - 25), e o comprimento da admissão dentro da qual combustível é adicionado, (L~ i~), é maior do que 0,6 vezes o comprimento total do canal de pistão de passagem de ar, (L~ ai~) , e o comprimento do duto de transferência, (L~ s~), isto é, 0,6 x (L~ ai~ + L~ s~), mas menor do que 1,4 vezes o mesmo comprimento, isto é, 1,4 x (L~ ai~ + L~ s~).
BR0016930-7A 2000-01-14 2000-01-14 Motor de combustão interna de dois tempos BR0016930A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2000/000059 WO2001051785A1 (en) 2000-01-14 2000-01-14 Two-stroke internal combustion engine

Publications (1)

Publication Number Publication Date
BR0016930A true BR0016930A (pt) 2002-11-19

Family

ID=20278061

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0016930-7A BR0016930A (pt) 2000-01-14 2000-01-14 Motor de combustão interna de dois tempos

Country Status (10)

Country Link
US (1) US6668770B2 (pt)
EP (1) EP1248901B1 (pt)
JP (1) JP2003519749A (pt)
AT (1) ATE313707T1 (pt)
AU (1) AU3201100A (pt)
BR (1) BR0016930A (pt)
CA (1) CA2395708A1 (pt)
DE (1) DE60025041T2 (pt)
ES (1) ES2253210T3 (pt)
WO (1) WO2001051785A1 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4535418B2 (ja) * 2001-05-08 2010-09-01 株式会社Ｉｈｉシバウラ 層状掃気２サイクルエンジン
JP2002332847A (ja) * 2001-05-08 2002-11-22 Ishikawajima Shibaura Mach Co Ltd 層状掃気２サイクルエンジン
DE10218200B4 (de) * 2002-04-24 2013-05-16 Andreas Stihl Ag & Co. Zweitaktmotor
DE10312092B4 (de) * 2002-05-24 2013-10-10 Andreas Stihl Ag & Co. Kg Zweitaktmotor
GB2394255B (en) * 2002-09-18 2005-04-27 Stihl Ag & Co Kg Andreas Induction device
US7469666B2 (en) 2003-09-25 2008-12-30 Husqvarna Ab Two-stroke engine
DE102004009310B4 (de) * 2004-02-26 2012-10-04 Andreas Stihl Ag & Co. Kg Ansaugvorrichtung
DE102004056149B4 (de) * 2004-11-20 2023-03-16 Andreas Stihl Ag & Co. Kg Zweitaktmotor
US7331315B2 (en) * 2005-02-23 2008-02-19 Eastway Fair Company Limited Two-stroke engine with fuel injection
JP4585920B2 (ja) * 2005-06-07 2010-11-24 株式会社やまびこ ２サイクル内燃エンジン
BRPI0918054B1 (pt) 2008-09-24 2020-11-10 Makita Corporation motor de dois tempos com depuração estratificada
JP5536870B2 (ja) * 2009-03-31 2014-07-02 フスクバルナ アクティエボラーグ ２ストローク内燃エンジン
DE102011120467A1 (de) * 2011-12-07 2013-06-13 Andreas Stihl Ag & Co. Kg Verbrennungsmotor und handgeführtes Arbeitsgerät mit einem Verbrennungsmotor
JP5922569B2 (ja) 2012-12-28 2016-05-24 株式会社マキタ 層状掃気２ストロークエンジン
JP6265791B2 (ja) * 2014-03-11 2018-01-24 本田技研工業株式会社 ユニフロー２ストロークエンジン

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Also Published As

Publication number Publication date
WO2001051785A1 (en) 2001-07-19
DE60025041D1 (de) 2006-01-26
US20030005895A1 (en) 2003-01-09
EP1248901A1 (en) 2002-10-16
US6668770B2 (en) 2003-12-30
AU3201100A (en) 2001-07-24
ATE313707T1 (de) 2006-01-15
EP1248901B1 (en) 2005-12-21
JP2003519749A (ja) 2003-06-24
DE60025041T2 (de) 2006-08-17
CA2395708A1 (en) 2001-07-19
ES2253210T3 (es) 2006-06-01

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B06G Technical and formal requirements: other requirements [chapter 6.7 patent gazette]

Free format text: COMPLEMENTE TAXA DE EXPEDICAO DE CARTA PATENTE REFERENTE PETICAO NPRJ/NO 020070066848 DE 22/05/2007. POR ESTA FORA DO PRAZO ORDINARIO.

B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1937 DE 19/02/2008.