JPS5620713A - Exhaust device for internal combustion engine - Google Patents
Exhaust device for internal combustion engineInfo
- Publication number
- JPS5620713A JPS5620713A JP9798479A JP9798479A JPS5620713A JP S5620713 A JPS5620713 A JP S5620713A JP 9798479 A JP9798479 A JP 9798479A JP 9798479 A JP9798479 A JP 9798479A JP S5620713 A JPS5620713 A JP S5620713A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- valve
- unburned
- umbrella
- discharged
- 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
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
PURPOSE: To selectively separate and discharge exhaust gas of high unburned HC content and reduce the total quantity of discharged unburned HC, by providing an exhaust passage in a part of the valve stem and valve head of an exhaust valve to release exhaust gas as the degree of opening of the valve is low.
CONSTITUTION: An exhaust valve 1 is closed and the umbrella-shaped part 2a of a cover 2 is fitted at a prescribed depth in the cylindrical inside surface 10b of an exhaust valve seat 10 in the initial stage of exhaust stroke. When a valve head 1a starts going off a valve seat portion 10a in that state, exhaust gas containing a large amount of unburned HC flows into the small chamber 3c of an exhaust valve guide 3 through a space 4 between the exhaust valve 1 and the cover 2 and flows out of the small chamber 3c into an exhaust passage 8 because an exhaust port 9 remains closed by the umbrella-shaped part 2a. The unburned HC is then oxidized by a catalytic converter or the like. The oxidized substances are discharged. When the exhaust stroke progresses and the umbrella-shaped part 2a is separated from the seat 10, the exhaust port 9 is opened so that exhaust gas of low unburned HC content is discharged through the exhaust port 9.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9798479A JPS5620713A (en) | 1979-07-31 | 1979-07-31 | Exhaust device for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9798479A JPS5620713A (en) | 1979-07-31 | 1979-07-31 | Exhaust device for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5620713A true JPS5620713A (en) | 1981-02-26 |
Family
ID=14206922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9798479A Pending JPS5620713A (en) | 1979-07-31 | 1979-07-31 | Exhaust device for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5620713A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012076183A1 (en) * | 2010-12-11 | 2012-06-14 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Internal combustion engine, exhaust valve and cylinder head therefor, and production, operation and use of an internal combustion engine |
-
1979
- 1979-07-31 JP JP9798479A patent/JPS5620713A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012076183A1 (en) * | 2010-12-11 | 2012-06-14 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Internal combustion engine, exhaust valve and cylinder head therefor, and production, operation and use of an internal combustion engine |
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