JPS5760996A - Exhaust pipe cooling water passage of outboard engine - Google Patents

Exhaust pipe cooling water passage of outboard engine

Info

Publication number
JPS5760996A
JPS5760996A JP55133541A JP13354180A JPS5760996A JP S5760996 A JPS5760996 A JP S5760996A JP 55133541 A JP55133541 A JP 55133541A JP 13354180 A JP13354180 A JP 13354180A JP S5760996 A JPS5760996 A JP S5760996A
Authority
JP
Japan
Prior art keywords
exhaust pipe
cooling water
water passage
pipe
open end
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
Application number
JP55133541A
Other languages
Japanese (ja)
Inventor
Iwao Masumoto
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 JP55133541A priority Critical patent/JPS5760996A/en
Publication of JPS5760996A publication Critical patent/JPS5760996A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F01P3/202—Cooling circuits not specific to a single part of engine or machine for outboard marine engines
    • 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

Landscapes

  • Exhaust Silencers (AREA)

Abstract

PURPOSE: To prevent reduction of output power by shortening the cooling water passage by at least 30mm from the open end of the exhaust pipe to the engine side, and providing a distance of at least 10mm from the exhaust pipe at the open end of the exhaust pipe.
CONSTITUTION: A cooling water passage 2 which is fabricated as one body with an exhaust pipe 1 is made shorter by a length of (a) (about 30mm) from the open end of the exhaust pipe 1 to the upper engine side, and at the opening of the cooling water passage 2 a rubber ring 2' is applied to connect it to the end of a cooling water supply pipe 3 which constitutes a part of the cooling water passage. The pipe 3 is connected to a conduit 6 through a pump 5. The pipe 3 is installed with a distance of (b) (about 10mm) maintained from the outer surface of the exhaust pipe 1 on the plane of the open end of the exhaust pipe 1. Consequentially, the pulsatory motion due to expansion of exhaust gas at the exhaust pipe opening will not be interfered by the cooling water passage, avoiding resultant output power reduction.
COPYRIGHT: (C)1982,JPO&Japio
JP55133541A 1980-09-25 1980-09-25 Exhaust pipe cooling water passage of outboard engine Pending JPS5760996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55133541A JPS5760996A (en) 1980-09-25 1980-09-25 Exhaust pipe cooling water passage of outboard engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55133541A JPS5760996A (en) 1980-09-25 1980-09-25 Exhaust pipe cooling water passage of outboard engine

Publications (1)

Publication Number Publication Date
JPS5760996A true JPS5760996A (en) 1982-04-13

Family

ID=15107218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55133541A Pending JPS5760996A (en) 1980-09-25 1980-09-25 Exhaust pipe cooling water passage of outboard engine

Country Status (1)

Country Link
JP (1) JPS5760996A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310022A (en) * 1965-08-23 1967-03-21 Kiekhaefer Corp Exhaust system for outboard motors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310022A (en) * 1965-08-23 1967-03-21 Kiekhaefer Corp Exhaust system for outboard motors

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