Two-stroke internal combustion engine
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United States of America Patent
Stats
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Aug 14, 2007
Grant Date -
Nov 30, 2006
app pub date -
May 23, 2006
filing date -
May 24, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a two-stroke internal combustion engine (1) using an internal cooling piston (2), the piston (2) has in-piston scavenging passages (19) defined therein by partition walls (18), and lower-end inlets (20) of the in-piston scavenging passages (19) are opened downward and narrowed in opening area by piston pin bosses (16). In-cylinder scavenging passages (14), which are opened and closed as the piston (2) moves, are supplied with an air-fuel mixture from the narrowed lower-end inlets (20) through the in-piston scavenging passages (19). Thereby, a fresh air-fuel mixture is increased in flow rate when flowing from the in-cylinder scavenging passages (14) to the combustion chamber (10), and the scavenging efficiency of the engine is improved.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP4726201 | May 24, 2005 |
International Classification(s)
- 2006 Application Filing Year
- F02B Class
- 869 Applications Filed
- 418 Patents Issued To-Date
- 48.11 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- F02B Class
- 2.14 % this patent is cited more than
- 18 Age
