JPH01154097U

JPH01154097U -

Info

Publication number: JPH01154097U
Application number: JP5142388U
Authority: JP
Priority date: 1988-04-16
Filing date: 1988-04-16
Publication date: 1989-10-24

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す船体内部を
透視した平面図、第２図は同実施例を示す船体内
部を透視した側面図、第３図は同実施例の洗浄プ
ラグ装置を示す縦断面図、第４図は上記洗浄プラ
グ装置の作動状態を示す縦断面図、第５図は小型
舟艇を示す斜視図、第６図は従来例を示す上記第
１図に対応した平面図である。１３……船体、１４……エンジンカバー、２３
〜２８……排気装置、２１……水ジエツト推進機
、２２……エンジン、３５〜３７……第１〜第３
の冷却水配管、４５……洗浄プラグ装置、６０…
…連通路、６１……ウオータージヤケツト、６５
……洗浄水導入通路、６９……チエツクバルブ、
Ｅ……排ガス、Ｗ……冷却水、Ｃ……洗浄水。 Fig. 1 is a plan view of the inside of the hull showing an embodiment of this invention, Fig. 2 is a side view of the same embodiment seen through the inside of the hull, and Fig. 3 is a cleaning plug device of the same embodiment. 4 is a longitudinal sectional view showing the operating state of the cleaning plug device, FIG. 5 is a perspective view showing a small boat, and FIG. 6 is a plan view corresponding to FIG. 1 showing a conventional example. be. 13...Hull, 14...Engine cover, 23
~28...Exhaust device, 21...Water jet propulsion device, 22...Engine, 35-37...1st to 3rd
cooling water piping, 45...cleaning plug device, 60...
...Communication path, 61...Water jacket, 65
...Washing water introduction passage, 69...Check valve,
E...Exhaust gas, W...Cooling water, C...Cleaning water.

Claims

[Scope of Claim for Utility Model Registration] A water jet propulsion machine, an engine that drives the water jet propulsion machine, an exhaust system that discharges exhaust gas from the engine out of the hull, and a water jet propulsion machine that takes in exhaust gas from the high pressure section of the water jet propulsion machine to the outside of the hull. a first cooling water pipe that introduces cooling water into the water jacket of the engine;
A small watercraft is equipped with a second cooling water pipe that guides the cooling water exiting the water jacket to the exhaust system, and an engine cover that covers the engine is provided so as to be openable and closable with respect to the hull. A cleaning plug device is inserted at the connection between the cooling water pipe and the water jacket of the engine, and the cleaning plug device communicates the outlet of the water jacket of the engine with the inlet of the second cooling water pipe. A communication passage, a washing water introduction passage that introduces washing water from the outside into the communication passage, and a washing water introduction passage that are normally closed, and when washing water is introduced from the outside into the washing water introduction passage, the water pressure is reduced. A cleaning device for a cooling system, comprising: a check valve that receives water and opens a passage for introducing cleaning water.