JPS5768518A - Exhaust device for 4 cycle internal combustion engine - Google Patents
Exhaust device for 4 cycle internal combustion engineInfo
- Publication number
- JPS5768518A JPS5768518A JP14373180A JP14373180A JPS5768518A JP S5768518 A JPS5768518 A JP S5768518A JP 14373180 A JP14373180 A JP 14373180A JP 14373180 A JP14373180 A JP 14373180A JP S5768518 A JPS5768518 A JP S5768518A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- vent hole
- valve
- gas
- chamber
- 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.)
- Granted
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
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
-
- 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
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
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)
- Characterised By The Charging Evacuation (AREA)
Abstract
PURPOSE: To improve the exhaust efficiency of the exhaust device for an internal combustion engine by providing a vent hole opened at one end in the vicinity of an exhaust valve in a cylinder head and connecting the other end of the vent hole to the chamber of the predetermined volume, thereby alleviating the impact pressure produced by the exhaust gas.
CONSTITUTION: A vent hole 8 of the predetermined length and diameter opened at one end with an exhaust passage 4 is formed in the vicinity of an exhaust valve 4a at the exhaust passage 4 side of a cylinder head 2, and the other end of the vent hole 8 is communicated with a chamber of the predetermined volume mounted together with a head cover 10 on the top of a cylinder head 2. Accordingly, when an engine starts an exhaust stroke so that the valve 4a is opened, high pressure burnt gas ejects in a supersonic state in to the passage 4, thereby producing an exhaust gas pressure vibration, which is suppressed by introducing a part of the burnt gas through the vent hole into the chamber 9. In this manner, the pressure state at the rear side of the valve 4a is alleviated, thereby smoothening the exhaust of the gas.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14373180A JPS5768518A (en) | 1980-10-16 | 1980-10-16 | Exhaust device for 4 cycle internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14373180A JPS5768518A (en) | 1980-10-16 | 1980-10-16 | Exhaust device for 4 cycle internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5768518A true JPS5768518A (en) | 1982-04-26 |
JPS6225850B2 JPS6225850B2 (en) | 1987-06-05 |
Family
ID=15345692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14373180A Granted JPS5768518A (en) | 1980-10-16 | 1980-10-16 | Exhaust device for 4 cycle internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5768518A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152153A2 (en) * | 1984-02-15 | 1985-08-21 | ALFA ROMEO AUTO S.p.A. | Resonance device for the exhaust system of an internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS528933A (en) * | 1975-07-08 | 1977-01-24 | Zachry Co H B | Method of coating with particulate coating material and method of spraying said coating material * coating apparatus and spraying apparatus therefor and sealing tape for said particulate coating mater |
-
1980
- 1980-10-16 JP JP14373180A patent/JPS5768518A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS528933A (en) * | 1975-07-08 | 1977-01-24 | Zachry Co H B | Method of coating with particulate coating material and method of spraying said coating material * coating apparatus and spraying apparatus therefor and sealing tape for said particulate coating mater |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152153A2 (en) * | 1984-02-15 | 1985-08-21 | ALFA ROMEO AUTO S.p.A. | Resonance device for the exhaust system of an internal combustion engine |
EP0152153A3 (en) * | 1984-02-15 | 1985-11-13 | ALFA ROMEO AUTO S.p.A. | Resonance device for the exhaust system of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JPS6225850B2 (en) | 1987-06-05 |
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