EP1555402A2 - Un moteur à combustion interne à deux temps, notamment pour outils portatifs comme scies entraínées par moteur, débroussailleuses, etc... - Google Patents
Un moteur à combustion interne à deux temps, notamment pour outils portatifs comme scies entraínées par moteur, débroussailleuses, etc... Download PDFInfo
- Publication number
- EP1555402A2 EP1555402A2 EP05000886A EP05000886A EP1555402A2 EP 1555402 A2 EP1555402 A2 EP 1555402A2 EP 05000886 A EP05000886 A EP 05000886A EP 05000886 A EP05000886 A EP 05000886A EP 1555402 A2 EP1555402 A2 EP 1555402A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- valve
- internal combustion
- combustion engine
- engine
- 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- Withdrawn
Links
Images
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
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
Definitions
- This invention relates to a two-stroke internal combustion engine, in particular for portable tools such as power saws, bush cutters, etc.
- Two-stroke engines comprising a bed on which a cylindrical seat for the reciprocating piston is applied, to which the inlet port for the mixture and the outlet port for the spent gas are connected.
- An object of the invention is to eliminate this drawback by providing a two-stroke internal combustion engine having high efficiency and low fuel consumption while at the same time not causing atmospheric pollution.
- the internal combustion engine comprises substantially a bed 2 provided with a cylindrical seat 6 presenting cooling fins 4 and within which there slides a piston 8 provided with a connecting rod 10 pivoted by a pin 12 to a crank 14.
- the conduit 20 feeding the mixture from the carburettor and the electrodes 22 of the spark plug 26 lead into the cylindrical seat, which also presents a further aperture 28 connecting the cylindrical chamber to the conduit 30 for discharging the exhaust gas to a silencer (not shown in the drawings) via an interposed valve 32.
- the valve 32 consists of a cylindrical body comprising a channel 34 of substantially rectangular cross-section with its axis perpendicular to the axis of the cylindrical body and rigid with a shaft 36, mounted on bearings 38, which engages by means of a taper fit a ring gear 40 connected by a belt 42 to a further ring gear 44 keyed onto the rotation shaft of the crank 14.
- the ring gear 40 has twice the number of teeth as the ring gear 44, so that one complete rotation of the crank 14 corresponds to one half of a rotation of the valve 32.
- the two ring gears 40 and 44 are mutually coordinated such that when the piston lies in its bottom dead centre position, the channel 34 of the cylindrical body almost completely faces the discharge aperture 30.
- the internal combustion engine operates in the following manner, with reference to Figures 1-5.
- the shaft 36 engages a gearwheel 50 engaging an intermediate gearwheel 52 which itself engages a gearwheel 54 keyed onto the crankshaft 16.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Valve Device For Special Equipments (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVE20040002U | 2004-01-19 | ||
ITVE20040002 ITVE20040002U1 (it) | 2004-01-19 | 2004-01-19 | Motore a combustione interna a due tempi, in particolare per attrezzat ure portatili quali motoseghe, decespugliatori, ecc. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1555402A2 true EP1555402A2 (fr) | 2005-07-20 |
EP1555402A3 EP1555402A3 (fr) | 2009-07-22 |
Family
ID=34611272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05000886A Withdrawn EP1555402A3 (fr) | 2004-01-19 | 2005-01-18 | Un moteur à combustion interne à deux temps, notamment pour outils portatifs comme scies entraînées par moteur, débroussailleuses, etc... |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1555402A3 (fr) |
IT (1) | ITVE20040002U1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1040344C2 (nl) * | 2013-08-21 | 2015-02-24 | Vhm Van Haandel Motorparts B V | Tweetaktmotorblok met vernieuwend carter, waarbij technische oplossingen zijn gevonden. het carter is geconstrueerd zodat de carburateur horizontaal gepositioneerd kan worden. de rotatie richting van de krukas is omgekeerd t.o.v. een bestaand motorblok. de krukas roteert dezelfde richting op als de stromingsrichting van het lucht-brandstofmengsel. het lucht-brandstofmengsel stroomt vanuit de carburateur via een apart flow kanaal in het carter om de krukas heen. een tussentandwiel is overbodig bij het vernieuwend carter. |
CN108757962A (zh) * | 2018-06-13 | 2018-11-06 | 宁波市鄞州拓创服饰有限公司 | 一种调流阀 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4864984A (en) * | 1986-09-02 | 1989-09-12 | Blish Nelson A | Rotary valve internal combustion engine |
DE9420091U1 (de) * | 1994-12-16 | 1995-02-16 | Wieneke, Svein, 41063 Mönchengladbach | Opto-Elektronische Steuerung der Auslaß-Kanal-Querschnitt-Verstellungseinheit für Zweitakt-Verbrennungsmotoren |
DE4438513A1 (de) * | 1994-10-31 | 1996-05-02 | Siegbert A Woll | Selbsttätige Auslaßregelung für 2-Takt-Motoren |
US20030230258A1 (en) * | 2002-06-12 | 2003-12-18 | Niemiz Hector Alvaro Javier | Two-stroke engines exhaust and scavenge control |
WO2004018853A1 (fr) * | 2001-08-20 | 2004-03-04 | Ragnar Aanmoen | Ameliorations apportees a un moteur de combustion interne a quatre temps |
-
2004
- 2004-01-19 IT ITVE20040002 patent/ITVE20040002U1/it unknown
-
2005
- 2005-01-18 EP EP05000886A patent/EP1555402A3/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4864984A (en) * | 1986-09-02 | 1989-09-12 | Blish Nelson A | Rotary valve internal combustion engine |
DE4438513A1 (de) * | 1994-10-31 | 1996-05-02 | Siegbert A Woll | Selbsttätige Auslaßregelung für 2-Takt-Motoren |
DE9420091U1 (de) * | 1994-12-16 | 1995-02-16 | Wieneke, Svein, 41063 Mönchengladbach | Opto-Elektronische Steuerung der Auslaß-Kanal-Querschnitt-Verstellungseinheit für Zweitakt-Verbrennungsmotoren |
WO2004018853A1 (fr) * | 2001-08-20 | 2004-03-04 | Ragnar Aanmoen | Ameliorations apportees a un moteur de combustion interne a quatre temps |
US20030230258A1 (en) * | 2002-06-12 | 2003-12-18 | Niemiz Hector Alvaro Javier | Two-stroke engines exhaust and scavenge control |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1040344C2 (nl) * | 2013-08-21 | 2015-02-24 | Vhm Van Haandel Motorparts B V | Tweetaktmotorblok met vernieuwend carter, waarbij technische oplossingen zijn gevonden. het carter is geconstrueerd zodat de carburateur horizontaal gepositioneerd kan worden. de rotatie richting van de krukas is omgekeerd t.o.v. een bestaand motorblok. de krukas roteert dezelfde richting op als de stromingsrichting van het lucht-brandstofmengsel. het lucht-brandstofmengsel stroomt vanuit de carburateur via een apart flow kanaal in het carter om de krukas heen. een tussentandwiel is overbodig bij het vernieuwend carter. |
CN108757962A (zh) * | 2018-06-13 | 2018-11-06 | 宁波市鄞州拓创服饰有限公司 | 一种调流阀 |
Also Published As
Publication number | Publication date |
---|---|
EP1555402A3 (fr) | 2009-07-22 |
ITVE20040002U1 (it) | 2004-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5791303A (en) | Two-cycle internal combustion engine | |
EP2327864B1 (fr) | Moteur à deux temps, à balayage, stratifié | |
US6640755B2 (en) | Two-cycle internal combustion engine | |
EP1967722A1 (fr) | Moteur a deux temps | |
US7322322B2 (en) | Stratified-scavenging two-stroke internal combustion engine | |
US6712039B2 (en) | Internal combustion engines | |
US6668769B1 (en) | Two stroke hybrid engine | |
JPH09112289A (ja) | ターボコンパウンドアークピストンエンジン | |
US6450135B1 (en) | Two-stroke internal combustion engine | |
CN102072009B (zh) | 空气先导式扫气的二冲程发动机 | |
EP1555402A2 (fr) | Un moteur à combustion interne à deux temps, notamment pour outils portatifs comme scies entraínées par moteur, débroussailleuses, etc... | |
US6173683B1 (en) | Two-stroke cycle engine | |
WO2011027416A1 (fr) | Moteur à deux temps | |
EP1069294B1 (fr) | Moteur à combustion interne à deux temps | |
US6546901B2 (en) | Two cycle internal combustion engine | |
US6367431B1 (en) | Two-stroke cycle engine | |
US20190170055A1 (en) | Two-stroke engine with improved performance | |
EP1207286A2 (fr) | Moteur à combustion interne à trois phases pour des outils portatifs | |
US7287495B1 (en) | Two-cycle engine | |
FI128955B (en) | Two-stroke engine | |
US20020026911A1 (en) | Two cycle internal combustion engine | |
JPH1182047A (ja) | 携帯型動力作業機 | |
AU768065B2 (en) | Internal combustion engines | |
US20020050254A1 (en) | Two cycle internal combustion engine | |
AU761931B2 (en) | To create all stroke style motors into rotary style motors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
AKX | Designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20100130 |