JPS57122121A - Exhaust gas backward-flow reducing device for exhaust turbine supercharger - Google Patents
Exhaust gas backward-flow reducing device for exhaust turbine superchargerInfo
- Publication number
- JPS57122121A JPS57122121A JP56007599A JP759981A JPS57122121A JP S57122121 A JPS57122121 A JP S57122121A JP 56007599 A JP56007599 A JP 56007599A JP 759981 A JP759981 A JP 759981A JP S57122121 A JPS57122121 A JP S57122121A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- pipe
- backward flow
- valve
- valve overlap
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Supercharger (AREA)
Abstract
PURPOSE:To enlarge valve overlap in order to improve the full load operation performance of an exhaust turbine supercharger by disposing a backward flow reducing throttle pipe having a small diameter part at a connection of an exhaust port and exhaust pipe etc. CONSTITUTION:An exhaust gas generated in a combustion chamber 4 during operation of the engine flows from an exhaust port 8 into an exhaust pipe 13 via a throttle valve 18 in an exhaust stroke opened by an exhaust valve. In the exhaust pipe 13, the throttle pipe 18 has at its inlet side large diameter part 24 forming a smooth continuous line with the inner diameter surface of the exhaust port 8; on its way a tapered part 25; and at its lower end part a small diameter part 26. Owing to the above-mentioned constitution, the backward flow of the exhaut gas toward a cylinder side can be prevented. Consequently, even when a valve overlap is set wide to some extent, backward flow of the exhaust gas can be prevented and by so-wided valve overlap gas exchange in the cylinder in a high revolution area can be performed actively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56007599A JPS57122121A (en) | 1981-01-20 | 1981-01-20 | Exhaust gas backward-flow reducing device for exhaust turbine supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56007599A JPS57122121A (en) | 1981-01-20 | 1981-01-20 | Exhaust gas backward-flow reducing device for exhaust turbine supercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57122121A true JPS57122121A (en) | 1982-07-29 |
Family
ID=11670262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56007599A Pending JPS57122121A (en) | 1981-01-20 | 1981-01-20 | Exhaust gas backward-flow reducing device for exhaust turbine supercharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57122121A (en) |
-
1981
- 1981-01-20 JP JP56007599A patent/JPS57122121A/en active Pending
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