JPS55148691A - Exhaust device for outboard engine and the like - Google Patents

Exhaust device for outboard engine and the like

Info

Publication number
JPS55148691A
JPS55148691A JP5734579A JP5734579A JPS55148691A JP S55148691 A JPS55148691 A JP S55148691A JP 5734579 A JP5734579 A JP 5734579A JP 5734579 A JP5734579 A JP 5734579A JP S55148691 A JPS55148691 A JP S55148691A
Authority
JP
Japan
Prior art keywords
exhaust port
propeller
engine
reversion
valve disc
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
Application number
JP5734579A
Other languages
Japanese (ja)
Other versions
JPS6127239B2 (en
Inventor
Masaaki Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Marine Co Ltd
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Sanshin Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd, Sanshin Kogyo KK filed Critical Yamaha Motor Co Ltd
Priority to JP5734579A priority Critical patent/JPS55148691A/en
Publication of JPS55148691A publication Critical patent/JPS55148691A/en
Publication of JPS6127239B2 publication Critical patent/JPS6127239B2/ja
Granted legal-status Critical Current

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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for outboard marine engines

Abstract

PURPOSE: To prevent the fall of the sternward thrust of an outboard engine equipped with a boss exhaust device by providing an exhaust port for an engine reversion.
CONSTITUTION: A propeller boss 2 is provided with an exhaust port 18, while to the front part of a propeller a valve seat board 21 is fixed. Moreover, a valve disc 24 is fitted rotatably to the front part. The valve disc 24, having a resisting projection 28, is rotated by the resistance of water and takes two positions in normal engine rotation and reversion. At the position in normal rotation of the valve disc 24, the exhaust port 22 in normal rotation of the valve seat board 21 and the exhaust port in normal rotation of the valve disc 24 are communicated, the exhaust gas being exhausted from an exhaust port 18. At engine reversion, the exhaust port in normal rotation is shut, while an exhaust port 23 in engine reversion provided in the outer tube part 11 of the front part of the propeller opens. In this case, the exhaust gas is sent out on the downstream side of the propeller. Therefore, the racing of the propeller due to the involvement of the exhaust gas with a stream of water in the propeller is avoided and a sufficient rearward thrust can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP5734579A 1979-05-10 1979-05-10 Exhaust device for outboard engine and the like Granted JPS55148691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5734579A JPS55148691A (en) 1979-05-10 1979-05-10 Exhaust device for outboard engine and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5734579A JPS55148691A (en) 1979-05-10 1979-05-10 Exhaust device for outboard engine and the like

Publications (2)

Publication Number Publication Date
JPS55148691A true JPS55148691A (en) 1980-11-19
JPS6127239B2 JPS6127239B2 (en) 1986-06-24

Family

ID=13052976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5734579A Granted JPS55148691A (en) 1979-05-10 1979-05-10 Exhaust device for outboard engine and the like

Country Status (1)

Country Link
JP (1) JPS55148691A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778419A (en) * 1985-04-08 1988-10-18 Outboard Marine Corporation Reverse thrust propeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778419A (en) * 1985-04-08 1988-10-18 Outboard Marine Corporation Reverse thrust propeller

Also Published As

Publication number Publication date
JPS6127239B2 (en) 1986-06-24

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