JPS56151238A - Shape of exhaust port of two-cycle engine - Google Patents
Shape of exhaust port of two-cycle engineInfo
- Publication number
- JPS56151238A JPS56151238A JP5477380A JP5477380A JPS56151238A JP S56151238 A JPS56151238 A JP S56151238A JP 5477380 A JP5477380 A JP 5477380A JP 5477380 A JP5477380 A JP 5477380A JP S56151238 A JPS56151238 A JP S56151238A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- port
- exhaust port
- sound
- sections
- 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.)
- Pending
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
- 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)
- Exhaust Silencers (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
PURPOSE:To diminish the sound of exhaust at the beginning thereof and the strinking sound of a piston, while enlarging the width of the exhaust port, by dividing an opening part by longitudinal ribs provided at the exhausted port of the two-cycle engine and by giving a difference in positions of the upper edges of the respective sections of the devided opening part. CONSTITUTION:The cylinder body 10 of the two-cycle engine is provided with a scavenging passage 10, a scavenging port 16, the exhaust port 20 and an exhaust passage 22, and the exhaust port 20 is divided by the longitudinal ribs 24. The cental opening section 26 of the divided opening part and the right and left opening sections 28 and 30 thereof are formed in such a manner that the positions of the upper edges of the section 26 and the sections 28 and 30 are given a difference by L1 between them. Accordingly, at the stroke of L1 at the beginning of exhaust, only the central opening section 26 is opened, whereby the sound of exhaust caused at the beginning of exhaust can be diminished. And, at the subsequent stroke of L2, all the opening sections are opened to reduce resultantly the resistance of exhaust, while the longitudinal ribs 24 prevent projection of a piston ring to the exhaust port and generation of the striking sound of the piston.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5477380A JPS56151238A (en) | 1980-04-24 | 1980-04-24 | Shape of exhaust port of two-cycle engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5477380A JPS56151238A (en) | 1980-04-24 | 1980-04-24 | Shape of exhaust port of two-cycle engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56151238A true JPS56151238A (en) | 1981-11-24 |
Family
ID=12980084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5477380A Pending JPS56151238A (en) | 1980-04-24 | 1980-04-24 | Shape of exhaust port of two-cycle engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56151238A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056120A (en) * | 1983-09-08 | 1985-04-01 | Mitsubishi Heavy Ind Ltd | Cylinder liner |
JPS6373550U (en) * | 1986-10-31 | 1988-05-17 | ||
WO2012132628A1 (en) * | 2011-03-31 | 2012-10-04 | 株式会社マキタ | Two-stroke engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4729841U (en) * | 1971-04-26 | 1972-12-05 |
-
1980
- 1980-04-24 JP JP5477380A patent/JPS56151238A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4729841U (en) * | 1971-04-26 | 1972-12-05 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056120A (en) * | 1983-09-08 | 1985-04-01 | Mitsubishi Heavy Ind Ltd | Cylinder liner |
JPH0226700B2 (en) * | 1983-09-08 | 1990-06-12 | Mitsubishi Heavy Ind Ltd | |
JPS6373550U (en) * | 1986-10-31 | 1988-05-17 | ||
WO2012132628A1 (en) * | 2011-03-31 | 2012-10-04 | 株式会社マキタ | Two-stroke engine |
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