TWI271471B - A piston having SAS piston channel for optimum air scavenging and an internal combustion engine therewith - Google Patents

A piston having SAS piston channel for optimum air scavenging and an internal combustion engine therewith Download PDF

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Publication number
TWI271471B
TWI271471B TW094103025A TW94103025A TWI271471B TW I271471 B TWI271471 B TW I271471B TW 094103025 A TW094103025 A TW 094103025A TW 94103025 A TW94103025 A TW 94103025A TW I271471 B TWI271471 B TW I271471B
Authority
TW
Taiwan
Prior art keywords
piston
channel
combustion engine
internal combustion
sas
Prior art date
Application number
TW094103025A
Other languages
English (en)
Other versions
TW200530496A (en
Inventor
Paul A Warfel
Rodney W Tynes
Original Assignee
Husqvarna Outdoor Products Inc
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 Husqvarna Outdoor Products Inc filed Critical Husqvarna Outdoor Products Inc
Publication of TW200530496A publication Critical patent/TW200530496A/zh
Application granted granted Critical
Publication of TWI271471B publication Critical patent/TWI271471B/zh

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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
    • F02B25/20—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
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/24—Pistons  having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
    • 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)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Supercharger (AREA)

Description

1271471 的尺寸係任音終一 —、、曰不，便於圖式的閱讀。在下列說明中，為 了解釋，揭示耸夕& & 汗夕特疋細節，以供完整了解本發明。然而， 顯然可以不靈I^ 而要沒些特定細節以實施本發明。在其他狀 ^ 才 白知的結構和裝置以方塊圖顯示，以便說明本發 明。 一、首先 > 考圖丨，其繪示依據本發明之一型式的分層掃 氣式二行程弓丨, Ή拳1 〇的検剖視圖。特別地，圖丨繪示通過 曲軸軸線及5亥&虹轴線的橫剖面。_活塞i 2纟納於且可 垂直滑動於引擎10的汽缸塊14中。活塞12包括一活塞 開槽6其中頂邊緣壁1 8的一部分朝位在活塞12中的活 塞銷孔隙1 9被蠻g+ AS力、L 2 诋弓角、推拔或傾斜。例如，頂邊緣壁丨8可 以具有逐漸增加的角度’且可自平行於活塞銷孔隙19中 心線的軸線彎角成約十度到約六十度。考慮到角形頂邊緣 壁1 8有利於來自掃氣通道44的燃料混合物的清理，以改 進來自引¥ 10的排出’如將於下文中討論。然而，應該 了解’其他空氣流動力學有助於清理。 一曲軸箱20耦合到汽缸塊14的下側部分，且一曲軸 室22在曲轴箱20中形成。活塞12與汽缸塊14形成一汽 缸室（或燃燒室）26，燃料混合物饋送到、卞▲ 6 a j，飞缸至26以便點 火。設在汽缸塊14的側壁中的是一排放〇 , 土# 哪风口（未顯示）與一掃 氣口 28，排放口連接到一排放通道（未顯 、不_不），其用於在燃 燒後排放燃燒氣體，掃氣口 28用於供雁 卜 1，、應燃料混合物到燃 燒室26。排放口經由一排放管（未顯示）鉍人 J祸合到一消音器（未 顯示），且燃燒氣體從消音器排入大氣，成為廢氣 1271471 20 曲軸箱 22 曲轴室 26 汽缸室 28 掃氣口 30 活塞銷 32 連接桿 34 曲轴 36 大端 38 小端 40 活塞鎖毅 41 軸承 44 掃氣通道 46 空氣通道 48 頂部分

Claims (1)

1271471 與一外側牆之交叉處，使得當該活 氣會藉由該頂邊緣壁被導向一掃氣 斜到該活塞的頂邊緣壁 塞開槽首先開啟時，空 通道的一頂部角落。 6·如申凊專利範圍第5項所述之活塞，其中，該活塞 開槽的頂邊緣壁是錐形。 7 ·如申請專利範圍第5項所述之活塞，其中，該活塞 開槽的頂邊緣壁自一平行於該活塞銷孔隙中心線的軸線彎 角成約十度到約六十度。
13
TW094103025A 2004-03-04 2005-02-01 A piston having SAS piston channel for optimum air scavenging and an internal combustion engine therewith TWI271471B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/792,995 US7021252B2 (en) 2004-03-04 2004-03-04 Sas piston channel for optimum air scavenging

Publications (2)

Publication Number Publication Date
TW200530496A TW200530496A (en) 2005-09-16
TWI271471B true TWI271471B (en) 2007-01-21

Family

ID=34750616

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094103025A TWI271471B (en) 2004-03-04 2005-02-01 A piston having SAS piston channel for optimum air scavenging and an internal combustion engine therewith

Country Status (8)

Country Link
US (1) US7021252B2 (zh)
EP (1) EP1571307B1 (zh)
JP (1) JP4473750B2 (zh)
CN (1) CN100455779C (zh)
AT (1) ATE488682T1 (zh)
CA (1) CA2496129C (zh)
DE (1) DE602005024734D1 (zh)
TW (1) TWI271471B (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7559299B2 (en) * 2007-01-19 2009-07-14 Eastway Fair Company Limited Monolithic cylinder-crankcase
CN107191347B (zh) 2012-12-18 2019-07-23 艾默生环境优化技术有限公司 具有蒸气注入系统的往复式压缩机
SE543272C2 (en) * 2019-03-06 2020-11-10 Husqvarna Ab Engine piston, engine, hand-held tool, and method of manufacturing an engine piston
CN114508479A (zh) * 2022-01-12 2022-05-17 瑞立集团瑞安汽车零部件有限公司 两级压缩机和车辆

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US694016A (en) 1901-02-02 1902-02-25 Warren Hibbard Explosive-engine.
US887237A (en) 1907-03-26 1908-05-12 Harris T Dunbar Gas-engine.
US1550703A (en) 1921-10-03 1925-08-25 Knott Charles Internal-combustion engine
US1755260A (en) 1927-12-27 1930-04-22 Johnson Brothers Engineering C Internal-combustion engine
US1773387A (en) 1928-09-12 1930-08-19 Busque Charles Simeon Gas-engine construction
FR787289A (fr) * 1933-12-05 1935-09-19 Bohn Aluminium & Brass Corp Piston perfectionné
US3257997A (en) 1965-02-04 1966-06-28 Mcculloch Corp Piston for internal combustion engine
GB2083550B (en) * 1980-08-29 1984-05-16 Outboard Marine Corp Scavening two-stroke internal combustion engines
US5425346A (en) * 1993-09-14 1995-06-20 Mavinahally; Nagesh S. Performance improvement design for two-stroke engines
DE19900445A1 (de) * 1999-01-08 2000-07-13 Stihl Maschf Andreas Zweitaktmotor mit Spülvorlage
JP3592237B2 (ja) * 1999-04-23 2004-11-24 小松ゼノア株式会社 層状掃気２サイクルエンジン
US6564760B2 (en) 2001-09-20 2003-05-20 Imack Laydera-Collins Stratified scavenging two-cycle internal combustion engine
DE10312092B4 (de) * 2002-05-24 2013-10-10 Andreas Stihl Ag & Co. Kg Zweitaktmotor
DE10223069A1 (de) * 2002-05-24 2003-12-11 Stihl Maschf Andreas Zweitaktmotor
DE10229365B4 (de) * 2002-06-29 2013-10-31 Andreas Stihl Ag & Co. Zweitaktmotor und Verfahren zu dessen Betrieb

Also Published As

Publication number Publication date
CN1664327A (zh) 2005-09-07
TW200530496A (en) 2005-09-16
JP2005248961A (ja) 2005-09-15
EP1571307A1 (en) 2005-09-07
EP1571307B1 (en) 2010-11-17
DE602005024734D1 (de) 2010-12-30
US20050193967A1 (en) 2005-09-08
CA2496129A1 (en) 2005-09-04
JP4473750B2 (ja) 2010-06-02
US7021252B2 (en) 2006-04-04
CA2496129C (en) 2008-07-29
CN100455779C (zh) 2009-01-28
ATE488682T1 (de) 2010-12-15

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