GB1285471A - Improvements in two-stroke internal combustion engines for chainsaws - Google Patents
Improvements in two-stroke internal combustion engines for chainsawsInfo
- Publication number
- GB1285471A GB1285471A GB605569A GB605569A GB1285471A GB 1285471 A GB1285471 A GB 1285471A GB 605569 A GB605569 A GB 605569A GB 605569 A GB605569 A GB 605569A GB 1285471 A GB1285471 A GB 1285471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ports
- chainsaws
- piston
- internal combustion
- combustion engines
- 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.)
- Expired
Links
Classifications
-
- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
-
- 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
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
-
- 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
- F02F1/002—Integrally formed cylinders and cylinder heads
-
- 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
-
- 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
- F02B2720/00—Engines with liquid fuel
- F02B2720/13—Two stroke engines with ignition device
- F02B2720/136—Scavenging or charging channels or openings
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
1285471 Two-stroke crank-case compression engines F DAVISON 29 April 1970 [4 Feb 1969] 6055/69 Heading F1B When the piston A is at the bottom of its stroke a charge from the crank-case flows between the gudgeon pin bosses F and the piston skirt, and through ports H, J in the skirt opposite the ends of the gudgeon pin E and cylinder ports, to the cylinder B above the piston. Pairs of cylinder ports H, J communicate with each skirt port, Figs. 2 to 4 (not shown). The ports H, J may be circular, rectangular or oval and formed during casting or by drilling or milling.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB605569A GB1285471A (en) | 1969-02-04 | 1969-02-04 | Improvements in two-stroke internal combustion engines for chainsaws |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB605569A GB1285471A (en) | 1969-02-04 | 1969-02-04 | Improvements in two-stroke internal combustion engines for chainsaws |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1285471A true GB1285471A (en) | 1972-08-16 |
Family
ID=9807594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB605569A Expired GB1285471A (en) | 1969-02-04 | 1969-02-04 | Improvements in two-stroke internal combustion engines for chainsaws |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1285471A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4135479A (en) * | 1975-12-19 | 1979-01-23 | Karl Schmidt Gmbh | Piston and cylinder for two-cycle engines |
US4306522A (en) * | 1980-06-19 | 1981-12-22 | Briggs & Stratton Corporation | Transfer port duct for two-stroke engines |
FR2545157A1 (en) * | 1983-04-28 | 1984-11-02 | Malossi Ugo | Improvement to pistons used particularly in two-stroke engines |
EP0997620A3 (en) * | 1998-10-30 | 2000-12-13 | Komatsu Zenoah Co. | Cylinder for stratified scavenging two-cycle engine |
WO2009006650A1 (en) * | 2007-07-06 | 2009-01-15 | Mahle König Kommanditgesellschaft Gmbh & Co | Piston |
-
1969
- 1969-02-04 GB GB605569A patent/GB1285471A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4135479A (en) * | 1975-12-19 | 1979-01-23 | Karl Schmidt Gmbh | Piston and cylinder for two-cycle engines |
US4306522A (en) * | 1980-06-19 | 1981-12-22 | Briggs & Stratton Corporation | Transfer port duct for two-stroke engines |
FR2545157A1 (en) * | 1983-04-28 | 1984-11-02 | Malossi Ugo | Improvement to pistons used particularly in two-stroke engines |
EP0997620A3 (en) * | 1998-10-30 | 2000-12-13 | Komatsu Zenoah Co. | Cylinder for stratified scavenging two-cycle engine |
WO2009006650A1 (en) * | 2007-07-06 | 2009-01-15 | Mahle König Kommanditgesellschaft Gmbh & Co | Piston |
US8539926B2 (en) | 2007-07-06 | 2013-09-24 | Mahle Koenig Kommanditgesellschaft Gmbh & Co. Kg | Piston, cylinder and piston assembly and piston ring for a piston |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |