Water spraying propelling outboard motor
A technology of water jet propulsion and outboard motor, which is applied in the field of outboard motor and can solve problems such as difficult to remove garbage
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no. 1 example
[0026] Such as figure 1 And shown in Fig. 14, the water-jet propulsion type outboard motor 1 of the first embodiment is installed on the stern board 7a of the boat 7 freely through the bracket 6, by the engine 2 as the power source; 2. A casing 3 installed at the upper end; and a propulsion device 5 fixed at the lower end of the casing 3 by means of the mounting member 4a.
[0027] The casing 3 of the outboard motor 1 is mounted on the bracket 6 through the bracket pin 6a extending in a substantially vertical direction. A part of the casing 3 is connected to a steering device 6 b operated by an operator of the boat 7 . The outboard motor 1 rotates in the counterclockwise direction (1a side in FIG. 14 ) in plan view around the bracket pin 6a by the operator performing a right-hand turn operation. In addition, the outboard motor 1 rotates clockwise in plan view (1b side in FIG. 14 ) around the bracket pin 6a when the operator performs a left-turn operation. In this way, since...
no. 2 Embodiment
[0067] Hereinafter, a second embodiment having another exhaust system will be described with reference to FIGS. 6 and 7 . In addition, the same parts as those in the first embodiment are assigned the same symbols and their descriptions are omitted.
[0068] The exhaust system of this embodiment has a first expansion chamber 35, a second expansion chamber 37, and a third expansion chamber formed downstream of the exhaust passage 31 and separated by partition walls 35a and 35b to separate the internal space 4d of the mounting table 4. Room 39.
[0069] The first expansion chamber 35 is provided on both the left and right outer sides of the exhaust passage 31 , and communicates with the exhaust passage 31 through the exhaust ports 34 provided on the left and right partition walls 31 a of the exhaust passage 31 .
[0070]The second inflation chamber 37 is arranged in front of the first inflation chamber 35, and communicates with the first inflation chamber 35 through a straight p...
no. 3 Embodiment
[0076] Hereinafter, a third embodiment having another drainage system and exhaust system will be described with reference to FIGS. 8 and 9 . In addition, the same parts as those in the first embodiment are assigned the same symbols and their descriptions are omitted.
[0077] In this embodiment, a retention chamber 41 constituting a part of an exhaust system for discharging exhaust gas from the engine 2 is provided inside the mounting base 4 as well as constituting a part of a drainage system for discharging cooling water from the engine 2 to the outside. That is, in the retention chamber 41 , the exhaust gas of the engine 2 flows in from the exhaust passage 31 at the same time as the cooling water waste water that has passed the engine 2 flows in from the drain pipe 49 a of the second water channel system.
[0078] Buffer chamber 41, as shown in FIG. A perforated plate 42 is laid on the opening 41b.
[0079] At the rear end of the retention chamber 41, as shown in FIG. 9, a...
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