RU205014U1 - OUTBOARD MOTOR - Google Patents

Abstract

The utility model relates to the design of an outboard boat motor, namely to the layout solutions of an internal combustion engine (ICE) with a vertical crankshaft. The outboard motor contains a housing 1 with an internal combustion engine 2 with a vertical crankshaft 3 installed in it, with a lower end of which flywheel 4 is connected, and with an oil pan 5 installed in the lower part of the engine 2. The crankshaft 3 of the internal combustion engine 2 is connected to the drive shaft 6 of the gearbox 7 of the propeller 8 through an intermediate element 9. The oil pan 5 is located between the flywheel 4 and the crankshaft 3 and made in the form of a container with an internal hollow protrusion 11, which forms a through channel. The intermediate element 9, as a rule, is at least partially located in the through cavity of the inner projection 11 of the oil pan 5. The intermediate element 9 can be made in the form of a sleeve, the inner surface of which, at least at the end connected to the flywheel 4, is provided with splines interacting with external splines 12 of the first end of the drive shaft 6, the second end of which interacts with the gearbox 7. 7 C.p. f-ly, 4 dwg.

Description

The utility model relates to the design of an outboard boat motor, namely to the layout solutions of an internal combustion engine (ICE) with a vertical crankshaft.

Known equipment for lubricating the crank gears of outboard motors, described in US patent for invention No. US 10724407 B1 (publ. 07/28/2020). The outboard motor contains an internal combustion engine, including a cylinder block having vertically aligned first and second cylinder blocks that protrude from each other in a V-shape, a vertically extending central drainage channel located under the first row of cylinders and configured to drain grease into an underlying sump located a vertical crankshaft and a central deflector located between the first and second rows of cylinders. The center deflector extends from the cylinder block to the crankshaft and is designed to divert grease from the crankshaft to the center drain. The upper end of the crankshaft is equipped with a toothed flywheel for starting the internal combustion engine.

In the described design of the outboard motor, the center of gravity of the internal combustion engine is shifted upward due to the location of the flywheel and associated units. At the same time, the oil sump, as a separate unit, is absent, its functions are performed by the sump, which is part of the cylinder block.

From the US application for invention No. US 2007/0251479 A1 (publ. 01.11.2007) known vertical internal combustion engine with a belt drive, which can be built, for example, in an outboard motor. The internal combustion engine contains a cylinder block, a vertically positioned crankshaft, the upper end of which is equipped with a flywheel with a toothed ring for starting the internal combustion engine, as well as an oil pan installed at the bottom of the cylinder block next to the drive shaft connecting the lower end of the crankshaft with a gearbox associated with the propeller of the outboard motor ...

The center of gravity of the internal combustion engine is also shifted upward due to the location of the flywheel and related units, and the location of the oil pan next to the drive shaft on one side of it increases the vertical dimensions of the internal combustion engine.

Known outboard engine, formed by converting an automobile engine, described in the PRC patent for utility model No. CN 204082321 U (publ. 07.01.2015), made with a vertical crankshaft. The outboard engine includes a cylinder head cover, a cylinder head assembly, a cylinder block assembly, a flywheel assembly, and a generator. The cylinder head cover contains a camshaft assembly, the cylinder head is equipped with an intake and exhaust valve block, and the cylinder block contains a crankshaft and pistons. Outside the cylinder block, an L-shaped oil flap is vertically installed, extending along the crankshaft, with a flywheel connected to its lower end.

In the described design of the internal combustion engine, the center of gravity is located quite low due to the lower location of the flywheel. However, the oil flap does not function as an oil pan, since it does not drain oil from the cylinder block, but is its side cover.

In US patent for invention No. 6116197 (publ. 09/12/2000), a vertical internal combustion engine is considered, in particular, for an outboard motor, taken as a prototype.

The vertical internal combustion engine is a four-cycle, in-line, water-cooled, four-cylinder ICE with a vertical crankshaft and horizontal cylinders. The internal combustion engine is mounted on an outboard motor having a main body containing a motor cover covering the vertical internal combustion engine, an extension housing and a gearbox housing. The mounting body and oil pan are installed in series and are inseparably connected to the vertical internal combustion engine.

A drive shaft is connected to the bottom end of the crankshaft, directed vertically, which runs downward in the extension housing and reaches the inside of the gearbox housing. The lower end of the drive shaft is connected to the output shaft through a reversing device in the gearbox. Thus, the power of the vertical internal combustion engine is transmitted through the crankshaft, drive shaft, reversing device and output shaft to the propeller to rotate it.

The main body of a vertical internal combustion engine consists of a crankcase, a cylinder block, a cylinder head, a head cover, a mounting body and an oil pan. The crankcase, cylinder block, cylinder head and head cover are located in series with the ship's hull and are bolted together in one piece. On the lower surfaces of the crankcase and cylinder block, the mounting case and oil pan are bolted to the crankcase and cylinder block.

The crankshaft, directed vertically, is rotatably supported on the bearing parts of the crankcase and the cylinder block by means of support bearings. The cylinders are located horizontally one above the other at regular intervals. The piston is movable in each of the cylinders and is connected to the crankshaft by means of a connecting rod so that the reciprocating motion of the piston causes the crankshaft to rotate clockwise when viewed from above.

The flywheel is bolted in one piece directly to the lower end of the crankshaft and a ring gear is formed around the circumference of the flywheel. Attached to the bottom surface of the flywheel is a connecting piece for installation using the splines on the top end of the drive shaft. The toothed ring is arranged to mesh with the starter drive gear, during the rotation of which the ring gear, the flywheel and the crankshaft are driven into rotation when the internal combustion engine is started.

The technical problem of the considered solution is the irrational layout of the oil pan on a vertical internal combustion engine, which leads to an increase in the vertical dimensions of the internal combustion engine and the outboard motor as a whole.

The specified technical problem for an outboard boat motor containing a housing with an internal combustion engine installed in it with a vertically located crankshaft, with the lower end of which a flywheel is connected, and with an oil pan installed in the lower part of the engine, while the crankshaft is connected to the drive shaft of the gearbox of the propeller through the intermediate element, it is solved in that the oil pan is located between the flywheel and the crankshaft and is made in the form of a container with an internal hollow protrusion that forms a through passage.

The internal combustion engine is made, as a rule, of a four-cylinder, four-stroke, water-cooled.

The flywheel is preferably secured to the crankshaft via an intermediate piece. In this case, the fastening bolts with heads adjacent to the flywheel surface are made interacting with the threaded holes of the lower end of the crankshaft and are located in the holes of the flywheel and the intermediate element.

The intermediate element can be at least partially located in the through cavity of the inner lip of the oil pan.

The intermediate element is made predominantly in the form of a sleeve, the inner surface of which, at least at the end connected to the flywheel, is provided with splines interacting with the outer splines of the drive shaft.

The walls of the oil pan can be provided with lugs in which through holes are formed.

The oil pan is preferably provided with an external projection forming a starter bracket.

The technical result of the utility model is a more rational layout of the internal combustion engine due to the implementation of the oil pan more compact vertically, structurally covering the junction of the crankshaft with the flywheel and the drive shaft of the propeller gearbox.

The given set of features in comparison with the prior art makes it possible to conclude that the proposed technical solution meets the "novelty" condition. At the same time, the claimed technical solution is applicable in mechanical engineering in the design of outboard boat motors, therefore, it meets the condition of "industrial applicability".

The claimed utility model is shown in the following figures.

FIG. 1 shows an outboard motor, side view.

FIG. 2 shows a fragment A of the outboard motor at the place of installation of the oil pan in section along the geometric axis of the vertical crankshaft.

FIG. 3 shows a cross-section BB of an internal combustion engine of an outboard motor at the location of the oil pan.

FIG. 4 shows the oil pan of a vertical internal combustion engine of an outboard motor in perspective.

The outboard motor contains a housing 1 with an internal combustion engine 2 (ICE 2) installed in it with a vertically located crankshaft 3, with the lower end of which flywheel 4 is connected, and with an oil pan 5 installed in the lower part of the engine 2. Internal combustion engine 2 It is made predominantly of a four-cylinder four-stroke water-cooled one, but another type of internal combustion engine can be used. The crankshaft 3 of the internal combustion engine 2 is connected to the drive shaft 6 of the gearbox 7 of the propeller 8 through the intermediate element 9, while the flywheel 4, as a rule, is fixed to the crankshaft 3 also through the intermediate element 9 with fastening bolts 10. Fastening bolts 10 with heads adjacent to the surfaces of the flywheel 4 are made preferably interacting with the threaded holes of the lower end of the crankshaft 3 and are located in the holes of the flywheel 4 and the intermediate element 9.

The oil pan 5 is located between the flywheel 4 and the crankshaft 3 and is made in the form of a container with an internal hollow protrusion 11 that forms a through passage. The intermediate element 9, as a rule, is at least partially located in the through cavity of the internal projection 11 of the oil pan 5. The intermediate element 9 can be made in the form of a sleeve, the inner surface of which, at least at the end connected to the flywheel 4, is provided with splines interacting with external splines 12 of the first end of the drive shaft 6, the second end of which interacts with the gearbox 7.

The walls of the oil pan 5 can be provided with bosses 13, in which through holes are formed for installation on the engine 2, and the oil pan 5 itself is preferably provided with an external protrusion 14 forming the starter bracket 15 of the internal combustion engine 2.

To start the internal combustion engine 2 of the outboard motor, the starter drive gear 15 interacts with the ring gear 16 of the flywheel 4, driving through it flywheel 4, intermediate element 9 and crankshaft 3. In operating mode, rotation of crankshaft 3 through intermediate element 9, drive shaft 6 and gearbox 7 is transferred to the propeller 8.

It should be noted that the aforementioned embodiments are illustrative and not limiting of the utility model, and that those skilled in the art will be able to devise many alternative embodiments without departing from the scope of the appended utility model claims. The mere fact that certain criteria are listed in mutually different dependent claims of a utility model does not indicate that a combination of these criteria cannot be used to obtain a positive effect.

Claims (8)

1. An outboard boat motor containing a housing with an internal combustion engine installed in it with a vertically located crankshaft, with the lower end of which a flywheel is connected, and with an oil pan installed in the lower part of the engine, while the crankshaft is connected to the drive shaft of the propeller gearbox through an intermediate element, characterized in that the oil pan is located between the flywheel and the crankshaft and is made in the form of a container with an internal hollow protrusion that forms a passage channel. 2. The outboard boat motor according to claim 1, characterized in that the internal combustion engine is a four-cylinder, four-stroke water-cooled engine. 3. The outboard motor of claim 1, wherein the flywheel is attached to the crankshaft through an intermediate element. 4. The outboard motor according to claim 3, characterized in that the fastening bolts with heads adjacent to the flywheel surface are made to interact with the threaded holes of the lower end of the crankshaft and are located in the holes of the flywheel and the intermediate element. 5. The outboard motor of claim. 1, characterized in that the intermediate element is at least partially located in the through cavity of the inner lip of the oil pan. 6. The outboard motor according to claim 1, characterized in that the intermediate element is made in the form of a sleeve, the inner surface of which, at least at the end connected to the flywheel, is provided with splines interacting with the outer splines of the drive shaft. 7. The outboard motor of claim. 1, characterized in that the walls of the oil pan are provided with tides, in which through holes are formed. 8. The outboard motor of claim. 1, characterized in that the oil pan is provided with an external protrusion that forms the starter bracket.

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