JP6607008B2 - Gas engine-mounted outboard motor - Google Patents

Description

  The present invention relates to a gas engine-mounted outboard motor in which a gas engine is mounted on an outboard motor main body, and liquid fuel is guided to the gas engine from a cassette gas cylinder.

  Patent Document 1 discloses a gas engine mounted outboard motor on which a gas engine that guides and burns liquid fuel stored in a cassette gas cylinder and rotates a propeller is mounted. In this gas engine-mounted outboard motor, the cassette gas cylinder for storing liquid fuel has a built-in nozzle disposed toward the front of the outboard motor main body.

JP 2011-178312 A

  By the way, when the outboard motor is accelerated while the hull is being slid, the bow side is raised, and the hull and the outboard motor are lifted forward and become inclined. At this time, as described above, if the cassette gas cylinder is arranged with the nozzle facing the front of the outboard motor main body, the lower end of the nozzle is exposed from the liquid fuel surface, and the liquid fuel in the cassette gas cylinder is removed. There is a risk that it may be difficult to use up the remaining amount sufficiently.

  An object of the present invention has been made in consideration of the above-described circumstances, and is a gas engine-equipped ship that can be efficiently used by sufficiently using the liquid fuel stored in the cassette gas cylinder so that the remaining amount is small. It is to provide an external machine.

A gas engine-mounted outboard motor according to the present invention includes a gas engine mounted on an outboard motor body, a propeller is disposed at a lower end portion of the outboard motor body, and the liquid fuel stored in a cassette gas cylinder is In the gas engine-mounted outboard motor that rotates the propeller by driving force generated by being guided to the gas engine and burning, the cassette gas cylinder is disposed in the vicinity of the gas engine, and the axis of the cassette gas cylinder is The cassette gas cylinder is configured to extend in the width direction of the outboard motor main body while being orthogonal to the propeller axis of the propeller , and the cassette gas cylinder is installed in the cylinder cover provided at the front portion of the gas engine. The cylinder cover is detachably inserted from the width direction, and the cylinder cover is attached to an end of the outboard motor body on one side in the width direction. A base for receiving a base and having a fuel channel formed therein; and an opening / closing switching valve for switching the fuel channel so that the fuel channel can be freely opened and closed, and the cassette gas cylinder at the other end in the width direction of the outboard motor body. The gas engine is covered with an engine cover from above and below, and the engine cover covers a lower half of the gas engine; and Covering the cylinder cover with the lid of the cylinder cover and the open / close switching valve exposed to the outside, and a cylinder cover covering portion fixed to the cylinder cover, and exposing the cylinder cover covering portion to the outside And an upper cover part that covers the upper half of the gas engine and is detachably attached to the lower cover part. It is characterized in that it has been configured with.

  According to the present invention, the cassette gas cylinder for storing the liquid fuel to be guided to the gas engine is disposed in the vicinity of the gas engine, and the axis of the cassette gas cylinder is orthogonal to the propeller axis of the propeller and extends in the width direction of the outboard motor body. It is configured as follows. For this reason, the bow side of the hull rises and the outboard motor moves forward due to the action of inertial force that occurs in the hull traveling state (especially in the accelerated traveling state) and, for example, the attitude change of the outboard motor body during shallow water slides. Even in the case of the upward inclined posture, the relative movement of the liquid fuel in the cassette gas cylinder can be suppressed. Therefore, it is possible to prevent a situation where the tip of the inflow portion of the nozzle in the cassette gas cylinder is exposed on the liquid fuel surface and the liquid fuel is not supplied to the gas engine. As a result, the liquid fuel stored in the cassette gas cylinder can be used efficiently by being fully used up so that the remaining amount becomes small.

The left view which shows one Embodiment of the gas engine mounting type outboard motor which concerns on this invention. (A) is a perspective view showing the upper part of the gas engine-mounted outboard motor of FIG. 1 as viewed from the diagonally left front, and (B) is a perspective view showing the upper cover part of FIG. 2 (A). FIG. 4A is a perspective view showing the upper part of the gas engine-mounted outboard motor of FIG. 1 as viewed from the diagonally right rear side, and FIG. 4B is a perspective view showing the upper cover part of FIG. The left side view which removes an upper cover part and shows the upper half part in the gas engine mounting type outboard motor of FIG. The perspective view which shows the gas engine and cylinder cover of FIG. Sectional drawing which follows the VI-VI line of FIG. Sectional drawing which follows the VII-VII line of FIG.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a left side view illustrating an embodiment of a gas engine mounted outboard motor (hereinafter referred to as an outboard motor) according to the present invention. The outboard motor 10 shown in FIG. 1 includes an engine holder 16 in the outboard motor main body 10 </ b> A, and a vertical gas engine 11 is mounted on the engine holder 16. A drive shaft housing 12 is integrally extended downward from the engine holder 16, and a gear case 13 is installed at the lower end of the drive shaft housing 12. The gas engine 11 and the engine holder 16 are arranged in an engine chamber 15 formed by being covered with an engine cover 14.

  The gas engine 11 is of a vertical type (vertical type) in which a crankshaft (crankshaft) 17 (FIG. 6) is provided in the vertical direction, and a drive shaft 18 connected to the crankshaft 17 is connected to a drive shaft housing 12. It extends vertically downward. The drive shaft 18 is connected to a propeller shaft (propeller shaft) 19 disposed horizontally in the gear case 13 via a shift mechanism 20, and a propeller 21 is attached to the rear end portion of the propeller shaft 19 so as to rotate integrally. . The driving force of the gas engine 11 is transmitted from the crankshaft 17 to the propeller shaft 19 via the drive shaft 18 and the shift mechanism 20, and the propeller 21 is rotated forward or reverse by the action of the shift mechanism 20, thereby causing the hull 25 (described later). Move forward or backward.

  The upper half of the drive shaft housing 12 in the outboard motor main body 10A is supported by a swivel bracket 22 provided in the periphery so as to be rotatable in the horizontal direction. The swivel bracket 22 is supported by a clamp bracket 24 via a swivel shaft 23. The clamp bracket 24 grips the transom 25A of the hull 25. Since the swivel bracket 22 is provided so as to be rotatable in the vertical direction with respect to the clamp bracket 24, the outboard motor main body 10 </ b> A is provided so as to be capable of being trimmed and tilted in the vertical direction with respect to the hull 25. Further, since the drive shaft housing 12 is provided so as to be rotatable in the horizontal direction with respect to the swivel bracket 22, the outboard motor main body 10A is provided so as to be steerable in the horizontal direction.

  When the outboard motor body 10A is steered, a steering handle 26 as a tiller handle that extends forward from one side (for example, the left side) in the width direction of the outboard motor body 10A is used. The steering handle 26 is pivotally supported by the engine holder 16 so as to be rotatable in the vertical direction, and a throttle grip 26A for adjusting the output of the gas engine 11 is provided at the tip of the steering handle 26.

  As shown in FIGS. 4 and 6, the gas engine 11 is a four-cycle single cylinder engine, and includes an upper engine case 27 and a lower engine case 28 that can be divided into upper and lower parts, and a cylinder head 29. . The upper engine case 27 is formed with a crank chamber 30 at the front and a cylinder 31 at the rear. The crank chamber 30 accommodates the crankshaft 17 and is positioned in front of the engine chamber 15. The cylinder 31 extends in the horizontal direction and is positioned behind the engine chamber 15 together with a combustion chamber 36 described later. A piston 32 is slidably disposed in the cylinder 31 and is connected to the crankshaft 17 via a connecting rod 33 so that the reciprocating motion of the piston 32 is converted into the rotational motion of the crankshaft 17. .

  In the lower engine case 28, an oil pan and an exhaust passage (not shown) are formed. The cylinder head 29 is disposed behind the engine chamber 15. The cylinder head 29 is formed with a combustion chamber 36 aligned with the cylinder 31, an intake port 37 and an exhaust port 38 communicating with the combustion chamber 36, and a valve operating device (not shown). An intake valve and an exhaust valve (not shown) of the valve operating device open and close the intake port 37 and the exhaust port 38, respectively. The exhaust port 38 communicates with the exhaust passage of the lower engine case 28.

  The intake port 37 communicates with the carburetor 40 shown in FIGS. The carburetor 40 includes an intake port 40A, and generates an air-fuel mixture from air (intake air) in the engine chamber 15 taken from the intake port 40A and liquid fuel guided from a cassette gas cylinder 51 (described later). The gas is supplied to the combustion chamber 36 of the gas engine 11. As shown in FIGS. 1 and 6, this air-fuel mixture burns in the combustion chamber 36, the piston 32 reciprocates, and the crankshaft 17 rotates to generate driving force in the gas engine 11. The driving force of the gas engine 11 rotates the propeller 21 via the drive shaft 18 and the shift mechanism 20.

  As shown in FIGS. 5 and 6, a flywheel magneto 41 is rotatably attached to the upper end of the crankshaft 17 that is the upper portion of the gas engine 11, and a ventilation fan 42 is fixed to the upper surface of the flywheel magneto 41. A recoil starter pulley 43 is provided above the ventilation fan 42 so as to rotate together with the flywheel magneto 41. The flywheel magneto 41, the ventilation fan 42, and the recoil starter pulley 43 are configured to be covered with a fan cover 44. An air inflow port 45 is formed on the top surface of the fan cover 44, and an air outflow port 46 is formed on the front lower portion of the fan cover 44.

  A recoil starter device 47 is formed by winding a starter rope 48 having a starter grip 49 fixed to one end thereof around the recoil starter pulley 43. When the operator of the outboard motor 10 holds the starter grip 49 and pulls the starting rope 48 forward of the outboard motor main body 10A, the recoil starter pulley 43 rotates, the crankshaft 17 rotates, and the gas engine 11 Start. Here, the fan cover 44 is provided with a rope guide 39 for guiding the starting rope 48.

  As shown in FIGS. 1 to 3, the outboard motor body 10 </ b> A is provided with the engine cover 14 that covers the gas engine 11 from above and below to form an engine chamber 15. The engine cover 14 is attached to the engine holder 16 and covers a lower cover portion 14A that covers the lower half of the gas engine 11, and an upper cover portion that covers the upper half of the gas engine 11 and is detachably attached to the lower cover portion 14A. 14 </ b> B and a cylinder cover covering portion 14 </ b> C that covers the cylinder cover 50.

  As shown in FIGS. 4 to 7, the cylinder cover 50 accommodates a cassette gas cylinder 51 that stores liquid fuel, and includes a cylinder cover main body 52, a cap receiving portion 53, an opening / closing switching valve 54, and a lid body 55. Configured.

  Here, the base 57 of the cassette gas cylinder 51 is provided with a nozzle 58 having an L shape in side view. The nozzle 58 is divided into a nozzle inflow portion 58 and a nozzle outflow portion 58B with a corner portion as a boundary. The nozzle outflow portion 58 </ b> B extends through the base 57 from the inside of the cassette gas cylinder 51 to the outside, and the tip 58 </ b> BB projects out of the cassette gas cylinder 51. Further, the nozzle inflow portion 58A is inside the cassette gas cylinder 51, and the liquid fuel stored in the cassette gas cylinder 51 is caused to flow into the nozzle 58 from the tip 58AA.

  The cylinder cover main body 52 of the cylinder cover 50 is configured in a substantially cylindrical shape having a top portion 60 to house the cassette gas cylinder 51, and an opening on the side opposite to the top portion 60 allows the cassette gas cylinder 51 to be inserted and removed. 61. The lid 55 closes the insertion port 61. The base receiving portion 53 is fixed to the top portion 60 of the cylinder cover main body 52, receives the base 57 of the cassette gas cylinder 51 inserted into the cylinder cover 50, and has a fuel flow path 62 formed therein. The tip 58BB of the nozzle outflow portion 58B of the nozzle 58 of the cassette gas cylinder 51 inserted and accommodated in the cylinder cover 50 communicates with the fuel flow path 62 of the base receiving portion 53. Further, the opening / closing switching valve 54 is rotatably disposed in the base receiving part 53 and switches the fuel flow path 62 of the base receiving part 53 so as to be freely opened and closed.

  As shown in FIGS. 4 and 5, the fuel flow path 62 of the base receiving portion 53 is connected to the carburetor 40 using a fuel pipe 63. As a result, the liquid fuel in the cassette gas cylinder 51 flows from the nozzle 58 of the cassette gas cylinder 51 into the fuel pipe 63 via the fuel flow path 62 and the open / close switching valve 54 of the base receiving portion 53 and is supplied to the vaporizer 40. Vaporized and mixed with air from the intake port 40A to form an air-fuel mixture.

  The cylinder cover 50 and the cassette gas cylinder 51 accommodated in the cylinder cover 50 are disposed in the vicinity of the gas engine 11. That is, the cylinder cover 50 is attached in front of the outboard motor main body 10 </ b> A and in front of the gas engine 11, and the cassette gas cylinder 51 is inserted into the cylinder cover 50 through the insertion port 61 of the cylinder cover 50. It can be inserted and removed from the width direction. Therefore, the cassette gas cylinder 51 in the cylinder cover 50 has an axis 51O of the cassette gas cylinder 51 perpendicular to the propeller shaft 19 of the propeller 21 and the width direction (horizontal direction) of the outboard motor main body 10A as shown in FIG. ).

  Further, the cylinder cover 50 includes a base receiving portion 53 and an opening / closing switching valve 54 on the top portion 60 which is one end (for example, the left side) of the outboard motor main body 10A in the width direction, and the width direction of the outboard motor main body 10A. A lid 55 is provided at the end of the other side (for example, the right side). In other words, the base receiving portion 53 and the opening / closing switching valve 54 are arranged facing the side surface of the lower cover 14A on one side (for example, the left side) in the width direction of the outboard motor main body 10A provided with the steering handle 26 (tiller handle). Further, the insertion port 11 and the lid body 55 are arranged facing the side surface (for example, the right side surface) of the lower cover 14A on the other side (for example, the right side) in the width direction of the outboard motor main body 10A.

  Further, as shown in FIGS. 6 and 7, the cylinder cover 50 and the cassette gas cylinder 51 accommodated in the cylinder cover 50 are disposed below the starting rope 48 of the recoil starter device 47 and above the lower cover portion 14A. The The cylinder cover 50 is inclined such that the top 60 on one side (for example, the left side) in the width direction of the outboard motor main body 10 </ b> A provided with the base receiving portion 53 is lower than the lid 55 on the other side. Arranged. Accordingly, the cassette gas cylinder 51 accommodated in the cylinder cover 50 is also arranged with an inclination such that the base 57 side is lower than the cylinder bottom 59 on the opposite side of the base 57.

  Here, in the cassette gas cylinder 51, as shown in FIGS. 1 and 6, the nozzle inflow portion 58A of the nozzle 58 is a drive shaft housing 12 as a steering shaft that rotatably supports the outboard motor main body 10A in the left-right direction. Are provided in parallel to the axis 120 of the crankshaft 17 and the axis 17O of the crankshaft 17. Further, as shown by a two-dot chain line in FIG. 6, the nozzle inflow portion 58A of the nozzle 58 is inclined rearward of the outboard motor main body 10A with respect to the axis 12O of the drive shaft housing 12 and the axis 17O of the crankshaft 17. May be provided. Accordingly, the tip 58AA of the nozzle inflow portion 58A of the nozzle 58 is suitably maintained below the liquid level of the liquid fuel in the cassette gas cylinder 51.

  As shown in FIGS. 1 and 4, the cylinder cover 50 that houses the cassette gas cylinder 51 is covered with the cylinder cover covering portion 14 </ b> C at the front half thereof. Specifically, as shown in FIGS. 2 and 3, the cylinder cover covering portion 14 </ b> C covers the vicinity of the lid body 55 with the open / close switching valve 54 and the lid body 55 of the cassette gas cylinder 51 exposed to the outside. The removed cylinder cover main body 52 and the base receiving part 53 are covered and fixed to the cylinder cover main body 52 and the base receiving part 53. An opening 64 for exposing the cylinder cover covering portion 14C to the outside is formed in front of the upper cover portion 14B. Thereby, it is possible to remove (detach) the upper cover portion 14B from the lower cover portion 14A in a state where the cylinder cover covering portion 14C is fixed to the cylinder cover 50.

With the configuration as described above, the following effects (1) to (7) are achieved according to the present embodiment.
(1) As shown in FIG. 1, FIG. 4 and FIG. 7, a cassette gas cylinder 51 for storing liquid fuel led to the gas engine 11 is housed in a cylinder cover 50 and arranged in the vicinity of the gas engine 11, and this cassette gas cylinder An axis 51O of 51 is configured to be orthogonal to the propeller shaft 19 of the propeller 21 and to extend in the width direction of the outboard motor main body 10A. For this reason, the bow side of the hull 25 rises due to the action of inertia force generated in the running state of the hull 25 (particularly in the accelerated running state), for example, the attitude change of the outboard motor main body 10A during shallow shoving. And even if it is a case where the outboard motor 10 becomes a front rising inclination attitude | position, the relative movement of the liquid fuel in the cassette gas cylinder 51 can be suppressed.

  Accordingly, it is possible to prevent a situation in which the tip 58AA of the nozzle inflow portion 58 of the nozzle 58 in the cassette gas cylinder 51 is exposed on the liquid level of the liquid fuel and the liquid fuel is not supplied to the gas engine 11. As a result, the liquid fuel stored in the cassette gas cylinder 51 can be used efficiently by sufficiently using the liquid fuel so as to reduce the remaining amount.

  (2) As shown in FIGS. 1 and 4, a cylinder cover 50 is installed in front of the outboard motor main body 10A and in front of the gas engine 11, and a cassette gas cylinder 51 is installed in the cylinder cover 50. The cylinder cover 50 is housed so as to be detachable from the width direction of the main body 10A. The cylinder cover 50 has an open / close switching valve 54 on one side (for example, the left side) in the width direction of the outboard motor main body 10A, and a lid body 55 on the other side (for example, the right side). Each is provided. For this reason, the operator who has boarded the hull 25 (that is, the operator of the outboard motor 10) can easily attach and detach the cassette gas cylinder 51 while on board, and can easily operate the on-off switching valve 54.

(3) As shown in FIGS. 4 and 6, the cylinder cover 50 and the cassette gas cylinder 51 are disposed below the starting rope 48 of the recoil starter device 47 and above the lower cover portion 14A. The drawer can be implemented linearly in the horizontal direction. For this reason, the contact load between the starting rope 48 and the rope guide 39 of the fan cover 44 is reduced, the starting operation of the gas engine 11 by the recoil starter device 47 can be easily performed, and the durability of the starting rope 48 is improved. Can be made.

  (4) As shown in FIGS. 4 and 7, the open / close switching valve 54 of the cylinder cover 50 has a side surface of the lower cover portion 14 </ b> A on one side (for example, the left side) in the width direction of the outboard motor main body 10 </ b> A provided with the operation handle 16. The lid body 55 of the cylinder cover 50 is disposed so as to face the side surface of the lower cover portion 14A on the other side (for example, the right side) in the width direction of the outboard body 10A. For this reason, when the cassette gas cylinder 51 is attached to and detached from the cylinder cover 50, the operation handle 26 is not obstructed, and the cassette gas cylinder 51 can be easily attached and detached.

  (5) As shown in FIG. 7, the cylinder cover 50 and the cassette gas cylinder 51 accommodated in the cylinder cover 50 are connected to the base receiving portion 53 on one side (for example, the left side) of the outboard motor main body 10A and the open / close switching. The valve 54 is arranged so as to be inclined with respect to the lid body 55 on the other side in the width direction (for example, the right side). For this reason, even when the outboard motor main body 10A is steered in the left-right direction and the liquid level of the liquid fuel in the cassette gas cylinder 51 moves in the width direction of the outboard motor main body 10A, the nozzles of the nozzles 58 in the cassette gas cylinder 51 The front end 58AA of the inflow portion 58A can always be held below the liquid fuel level in the cassette gas cylinder 51. As a result, fuel supply failure to the gas engine 11 can be prevented.

  (6) As shown in FIGS. 1 and 6, the nozzle inflow portion 58 </ b> A of the nozzle 58 in the cassette gas cylinder 51 is relative to the axis 12 </ b> O of the drive shaft housing 12 and the axis 17 </ b> O of the crankshaft 17. Parallel or inclined behind the outboard motor main body 10A. Therefore, when the hull 25 is in an acceleration state (until it moves from the stop state to the sliding state), the bow rises, and the hull 25 and the outboard motor 10 are in a forward leaning posture, and the inside of the cassette gas cylinder 51 Even when the liquid fuel is shifted rearward, the tip 58AA of the nozzle inflow portion 58A of the nozzle 58 can be prevented from being exposed from the liquid level of the liquid fuel. As a result, the liquid fuel in the cassette gas cylinder 51 can be surely used up so that the remaining amount is reduced.

(7) As shown in FIGS. 2 and 3, among the upper cover portion 14 </ b> B and the cylinder cover covering portion 14 </ b> C in the engine cover 14, the cylinder cover covering portion 14 </ b> C includes the opening / closing switching valve 54 and the lid 55 of the cylinder cover 50. The cylinder cover 50 is covered and fixed to the cylinder cover 50 while being exposed to the outside. Further, the upper cover portion 14B is formed with an opening 64 for exposing the cylinder cover covering portion 14C to the outside, and is detachably attached to the lower cover portion 14A so as to cover the upper half portion of the gas engine 11. Therefore, the opening / closing switching valve 54 can be operated in a state where the upper cover portion 14B is mounted on the lower cover portion 14A, and the cassette gas cylinder 51 can be attached to and detached from the cylinder cover 50 by removing the lid 55. For this reason, the operativity of the on-off switching valve 54 and the exchange workability | operativity of the cassette gas cylinder 51 can be improved.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention.

10 Outboard motor (Gas engine mounted outboard motor)
10A Outboard motor body 11 Gas engine 12 Drive shaft housing (steering shaft)
12O Axis of drive shaft housing 14 Engine cover 14A Lower cover portion 14B Upper cover portion 14C Cylinder cover covering portion 17 Crankshaft (crankshaft)
17O Crankshaft axis 19 Propeller shaft (propeller shaft)
21 Propeller 26 Steering handle (Tiller handle)
47 Recoil starter device 48 Rope for starting 50 Cylinder cover 51 Cassette gas cylinder 51O Cassette gas cylinder axis 53 Cap receiver 54 Open / close switching valve 55 Lid 57 Cap 58 Nozzle 58A Nozzle inlet 61 Insertion port 62 Fuel flow path 64 Upper cover Opening

Claims (5)

A driving force generated when a gas engine is mounted on the outboard motor body, a propeller is disposed at the lower end of the outboard motor body, and the liquid fuel stored in the cassette gas cylinder is guided to the gas engine and burned. In a gas engine-mounted outboard motor that rotationally drives the propeller,
The cassette gas cylinder is disposed in the vicinity of the gas engine, and the axis of the cassette gas cylinder is configured to be orthogonal to the propeller axis of the propeller and extend in the width direction of the outboard motor body ,
The cassette gas cylinder is housed in the cylinder cover provided at the front portion of the gas engine so as to be detachable from the width direction of the outboard motor body,
The cylinder cover is configured to receive a base of the cassette gas cylinder at the end on one side in the width direction of the outboard motor body, and to open and close the fuel channel so that the fuel channel can be opened and closed. A switching valve, and is configured to include a lid that closes an insertion port through which the cassette gas cylinder can be inserted and removed, at an end portion on the other side in the width direction of the outboard motor body.
Cover the gas engine with the engine cover from above and below,
The engine cover is
A lower cover portion covering the lower half of the gas engine;
A cylinder cover covering portion that covers the cylinder cover with the lid of the cylinder cover and the open / close switching valve exposed to the outside and is fixed to the cylinder cover;
In order to expose the cylinder cover covering portion to the outside, an opening for fitting with the cylinder cover is formed, and an upper cover portion that covers the upper half of the gas engine and is detachably attached to the lower cover portion And an outboard motor equipped with a gas engine, characterized by comprising: The gas engine is provided with a recoil starter device at the upper end of a crankshaft extending in a vertical direction with the start-up rope drawing direction facing the front of the outboard motor body,
Gas engine-mounted outboard motor according to claim 1, cylinder cover and the cassette gas cylinder, characterized in that disposed below the starting rope. The outboard motor main body is provided with a tiller handle extending forward from the end on one side in the width direction,
The cylinder cover is arranged so that the open / close switching valve faces a side surface on one side in the width direction of the outboard motor main body provided with the tiller handle, and the lid body is a side surface on the other side in the width direction of the outboard motor main body. gas engine-mounted outboard motor according to claim 1 or 2, characterized in that it is disposed facing the. The cylinder cover is disposed with an inclination such that one end in the width direction of the outboard motor body provided with the base receiving portion is lower than the other end, and the cassette gas cylinder is disposed on the base side. gas engine-mounted outboard motor according to any one of claims 1 to 3, characterized in that it is housed in said cylinder cover has an inclined such that lower. An L-shaped nozzle extending from the inside of the cassette gas cylinder to the outside is provided at the base of the cassette gas cylinder, and the inflow portion of the nozzle pivotally supports the outboard motor body so as to be rotatable in the left-right direction. The gas engine-mounted outboard motor according to any one of claims 1 to 4 , wherein the outboard motor is mounted in parallel with an axis of the steering shaft or inclined rearward of the outboard motor main body.

Images