CN201211926Y

CN201211926Y - Outboard engine by employing internal circulation water-cool engine as power

Info

Publication number: CN201211926Y
Application number: CNU2007200300730U
Authority: CN
Inventors: 冯立群
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-31
Filing date: 2007-10-31
Publication date: 2009-03-25
Anticipated expiration: 2017-10-31

Abstract

The utility model relates to an outboard machine which uses an internal circulating water cooling engine as power. The outboard machine is composed of a cylinder cover assembly, a cylinder body assembly, a crankshaft assembly, a connecting rod assembly, a crankcase assembly, an ignition system assembly, a forced lubrication and circulation system assembly and an internal circulating water cooling system assembly, wherein a driving propulsion system still adopts the mature and reliable part in the prior art to furthest save the product cost and shorten the production time. The outboard machine radically solves the problems that when used, the engine overheats, and the metal surface of the engine is eroded by seawater; the service life of the engine is greatly extended, and meanwhile, when the engine is operated, the noise can be greatly reduced.

Description

Circulating water cooling driving engine is done the outboard engine of power in adopting

Affiliated technical field

The utility model relates generally to the outboard engine that uses conventional engine to do power, relates in particular to the outboard engine that circulating water cooling driving engine in a kind of the employing is done power.

Background technology

The prior art products driving engine all uses the outer circulation water cooling mode.The outer circulation water cooling mode also is feasible in theoretical and practical application.Prior art products is partly to be combined by driving engine and drive propulsion system two.Prior art products has the driving engine of two kinds of different strokes to do power.A kind of is two cycle engine, and a kind of is four-stroke motor.Two cycle engine is by cylinder cover complement, the cylinder band assembly, and piston assembly, crank assemblby, connecting rod complement, crankcase assembly, the ignition system assembly is formed.Cylinder cover complement is by cylinder cover, and light-up plug is formed.The bottom design of cylinder cover has hemispheric combustion chamber, at the central mounting of combustion chamber light-up plug is arranged.The cylinder band assembly is made up of cylinder band and radiator structure.Have 3-6 opening that varies in size in the middle of the double stroke cylinder band endoporus on the Zhou Fangxiang of garden, be used as air inlet, scavenging and the exhaust of driving engine.Piston assembly is made up of piston, piston ring, piston pin.The double stroke piston length is longer, because will stop and open control air inlet, scavenging and exhaust with the gas port in the middle of the piston countercylinder body endoporus.Two-cycle piston ring by together or the twice piston ring forms, generally miniature and small displacement engine is only used piston one.The crank assemblby of two cycle engine adopts split type crank assemblby, by left and right crank shaft, and crank pin, crankshaft bearing is formed.Connecting rod complement is by monolithic linkage, and connecting rod macropore needle bearing, connecting rod aperture needle bearing are formed.Crankcase assembly is by the top half of base chamber body, and crankcase lower half body two is partly formed.Two cycle engine is finished the overall process of air inlet, compression, outburst, four strokes of exhaust owing to whenever go around.Therefore each cylinder band all has a compartment separately in crankcase, and the compartment internal volume is as much as possible little of to improve intake pressure.The ignition system assembly is made up of CDI Ignition Module, magneto generator, light-up plug, high-voltage ignition coil.Two cycle engine has simple in structure, and is in light weight, and output per litre is big, and volume is little, manipulates and plurality of advantages such as maintenance cost is low, and once by the board the mechanomotive force aspect was occupied dominant position for a long time.Owing to use piston control air inlet, scavenging and exhaust, cause control accuracy poor, most of fuel just is discharged from without economic combustion and causes waste and contaminated environment, the lubricating method that lubricating oil is mixed in the fuel makes the engine lubrication situation poor, shorten service life, just progressively replaced by four-stroke motor.Four-stroke motor is meant that air inlet, compression, outburst, four strokes of exhaust change two commentaries on classics by driving engine and finish.To form by cylinder cover complement, valve mechanism assembly, cylinder band assembly, piston assembly, crank assemblby, connecting rod complement, crankcase assembly, ignition system assembly, positive lubrication circulating system assembly. cylinder cover complement is made up of by hole and combustion chamber cylinder cover, cylinder cover hood, light-up plug, distribution cam axle mount pad, valve mechanism.Design has inlet channel on the cylinder cover, and two air flues of exhaust duct are respectively applied for the discharge with waste gas of entering of incoming mixture, and an end of air flue is located in the combustion chamber, and the other end is located at a side of cylinder cover.Article two, a valve guide respectively is housed in the air flue, plays guiding and positioning action when being used for the upper and lower motion of valve, the shape of valve resembles a mushroom, and there is a head greatly the front, and the back is a not only thin but also long stem of valve.A valve-seat ring respectively is housed in the inlet and outlet road junction in combustion chamber, relies on valve-seat ring and valve head to fit tightly, to guarantee the gas no leak, light-up plug is according to the side or the centre that how much are installed in combustion chamber of valve.Steam distribution device's assembly is made up of distribution cam axle, inlet valve, exhaust valve, valve rocker, valve spring, rocker shaft.Design has inlet cam and exhaust cam on the distribution cam axle, controls the opening and closing of inlet valve and exhaust valve respectively, and the shape of cam resembles peach, and the highest position of projection is the peach point, and unpolarized position is generating circle.One end of valve rocker is pressed on the outside face of cam, and the other end is pressed in the stem of valve top, and rocker shaft passes from hole, the middle garden of rocking arm, makes valve rocker become a lever.Along with the rotation of cam, the peach point is with an end jack-up of valve rocker, and the other end of valve rocker is depressed the valve thick stick, unseates the valve.The generating circle position makes valve rocker one end fall again, and the other end is being overlapped valve spring jack-up again on the stem of valve, make valve closure.One end of distribution cam axle is equipped with timing transmission hinge wheel, at an end of crank assemblby timing transmission minor sprocket is installed, and relies on the timing driving chain to connect transmission.Just a lot of one times of the number of teeth of the ratio of number of teeth timing transmission Xiao Lian wheel of timing transmission hinge wheel makes crank assemblby change two commentaries on classics, and distribution cam axle is goed around to guarantee the normal operation of four-stroke motor.The cylinder band assembly is made up of by the hole cylinder band and valve mechanism.The cylinder band endoporus of four-stroke motor is a smooth cylindrical shell.Valve mechanism is by the rectangular duct of Kong Weiyi, be used for the timing driving chain therefrom by with the inner distribution cam axle of installing of cylinder cover complement on timing transmission hinge wheel be connected driving.Piston assembly is made up of piston ring, piston, piston pin.The piston length of four-stroke motor is very short, and piston ring is by three road rings, and a twice is a compression ring, is used for the sealing to gas, and the 3rd road is an oil ring, is used to prevent that lubricating oil from entering combustion chamber and combustion gas blending burning produces carbon deposit damage parts and causes exhaust pollution.Crank assemblby is for dividing two kinds, and a kind of is split type crank assemblby, is made up of left and right crank shaft, crank pin, crankshaft bearing, and a kind of is the integral one-piece crankshaft assembly, is made up of integral one-piece crankshaft and crankshaft bearing.Discharge capacity is little, the split type crank assemblby of the many employings of the driving engine that number of cylinders is few, and discharge capacity is big, and the driving engine that number of cylinders is many adopts the integral one-piece crankshaft assembly more.Connecting rod complement also is divided into two kinds, and a kind of is the integral type connecting rod complement; A kind of is split type connecting rod complement, and the integral type connecting rod complement is by the integral type connecting rod, and connecting rod macropore bearing is formed, and split type connecting rod complement is by split type connecting rod, and connecting rod macropore bearing shell, connecting rod install and fix screw and form.The integral type connecting rod complement is joined split type crank assemblby, and split type connecting rod complement is joined the integral one-piece crankshaft assembly.Crankcase assembly also divides two kinds, a kind of is left and right split type crank assemblby, a kind of is upper and lower split type crankcase assembly, left and right split crankcase assembly is by left and right crankcases, and left and right crankcase cover is formed, and upper and lower split type crankcase assembly is made up of upper and lower split type crankcase and forward and backward crankcase cover, discharge capacity is little, the driving engine that number of cylinders is few adopts left and right split type crankcase assembly, and discharge capacity is big, and the driving engine that number of cylinders is many adopts upper and lower split crankcase assembly.The ignition system assembly is made up of magneto generator, Ignition Module, light-up plug, high-voltage ignition coil, and the positive lubrication circulating system is by lubricating oil pump, and lubricating oil pump driving device, machine oil filtering installation, oil basin, positive lubrication circulating path are formed.Lubricating oil pump has two kinds: a kind of is gear type pump, a kind of is gerotor pump, two kinds of lubricating oil pump all have application in four-stroke motor, the lubricating oil pump driving device is made up of large and small gear or big minor sprocket, driving chain, and being lower than at rotating speed also can be by the bent axle direct drive under 6000 rev/mins the situation.Oil basin also is oil pan tray, is located at the crankcase assembly bottom usually, and the machine oil filtering installation is made up of filtering net, papery or metal filtration core, is used to prevent that foul from sneaking into damages engine component in the lubricating oil.The positive lubrication circulating path is located at crankcase assembly inside.Drive propulsion system is made up of self-acting clutch, forward and backward transformation system, transmission shaft, transmission bevel pinion, propeller, propeller deceleration transmission large bevel gear, propeller under drive gear case.The centnifugal force that self-acting clutch produces when relying on engine running is combined closely clutch segment and clutch-bell cover inside face and is driven the transmission shaft rotation, the transmission bevel pinion that is installed in the transmission shaft lower end drives the propshaft rotation with the deceleration transmission large bevel gear engagement that is installed on the propshaft, be installed in the also rotation simultaneously of propeller of propshaft front end, promote boats and ships and move ahead.The rotating transformation system also is one group of gear, thereby makes propeller, transmission shaft produce forward or reverse by the hand of rotation of engagement or disengagement change transmission shaft, makes things convenient for moving ahead or retreating of boats and ships.No matter prior art products adopts the driving engine of which kind of stroke, and the type of cooling adopts the force-air cooling except that the driving engine of little discharge capacity, and remaining all adopts the outer circulation type of cooling.The method cooled engine of directly washing away with lake water, river or seawater exactly to the outside face in the hot spot of driving engine, cause engine cooling very insufficient, use often at hot weather or tropical zone and to be easy to generate superheat, seawater contains multiple chlorbromides such as more salt and iodine simultaneously, the metal surface there is very strong corrosive property, prior art products is shortened service life greatly.

Summary of the invention

For overcoming the weak point in the prior art products, the utility model provides a kind of and adopts interior circulating water cooling driving engine to do the outboard engine of power, and the engine cooling that can solve existing product preferably is insufficient, and the metal surface is easily by problems such as marine corrosions.

The utility model addresses this problem with not enough institute employing scheme: install circulating water cooling system in the cover on the driving engine basis of prior art products additional, drive propulsion system still adopts the part of mature and reliable in the prior art products to save cost and shortening production time to greatest extent.Include cylinder cover complement, valve mechanism assembly, cylinder band assembly, piston assembly, crank assemblby, connecting rod complement, crankcase assembly, ignition system assembly, positive lubrication circulation assembly, interior circulating water cooling system assembly are formed.Cylinder cover complement is made up of by hole, interior circulation cooling water road cylinder cover, cylinder cover hood, light-up plug, combustion chamber, distribution cam axle mount pad, valve mechanism, emphasis cooled off light-up plug, two parts that temperature is the highest of exhaust valve around interior circulation cooling water road was arranged in combustion chamber, and water outlet also is arranged on the cylinder cover complement.Steam distribution device's assembly is by distribution cam axle, and inlet valve, exhaust valve, valve rocker, valve spring, rocker shaft composition all are installed in cylinder cover complement inside, cover with cylinder cover hood.The cylinder band assembly is by cylinder band, interior circulation cooling water road, valve mechanism are formed by the hole, and cylinder band is a smooth cylindrical shell, and interior circulation cooling water road is around around the cylinder block endoporus, the degree of depth account for the cylinder band total length half less than, water inlet is located on the cylinder band assembly.Piston assembly is made up of piston, piston ring, piston pin.Piston length is very short, and piston ring has three roads, and the twice compression ring is installed in two annular grooves of piston head, and one oil ring is installed in and is used to prevent lubricating oil and combustion gas blending burning in the 3rd annular groove of piston.Crank assemblby divides two kinds, a kind of is split type crank assemblby, a kind of is the integral one-piece crankshaft assembly, split type crank assemblby is made up of left and right crank shaft, bent tenon pin, crankshaft bearing, the integral one-piece crankshaft assembly is made up of integral one-piece crankshaft and crankshaft bearing, connecting rod complement also divides two kinds, and a kind of is the integral type connecting rod complement, and a kind of is split type connecting rod complement.The integral type connecting rod complement is by the integral type connecting rod, and connecting rod macropore needle bearing is formed, and split type connecting rod complement is by split type connecting rod, connecting rod macropore bearing shell, connecting rod fix screw.Split type crank assemblby is equipped with the integral type connecting rod complement, and the integral one-piece crankshaft assembly is equipped with split type connecting rod complement.Crankcase assembly also divides two kinds, and a kind of is left and right split type crankcase assembly, by left and right crankcases, left and right crankcase cover is formed, and a kind of is upper and lower split type crankcase assembly, by upper and lower crankcase, upper and lower crankcase cover is formed, and two kinds of crankcase assemblys all have application.The ignition system assembly is made up of magneto generator, Ignition Module, light-up plug, high-voltage ignition coil, and interior circulating water cooling system assembly is by water pump, radiator, calorstat, inlet tube and outlet tube, and standby little water tank is formed.What water pump was used is one-stage centrifugal formula water pump, have simple in structure, the high long service life of hydraulic pressure, characteristics such as consumption of power is few, radiator divides left and right two, so that the interior installation of machine guard shield by the board, what radiator used is motor fan, only just start when water temperature surpasses uniform temperature, consumption of power is little, and the motor fan coolant-temperature switch also is installed on the radiator.Calorstat is the automatic switch valve of control cooling-water cycle.Its mode of operation is: when driving engine just starts, when interior circulation cooling water temperature is low, calorstat cuts out the circulation waterway that leads to radiator, cooling water expansion tank flows back to water pump by bypass circulation with low discharge, form the interior recirculated cooling water of low discharge at engine interior, make engine warms, engine running after a period of time from cylinder cover, when the cooling water expansion tank that cylinder band flows out has reached uniform temperature, calorstat is opened and is made cooling water expansion tank enter the main cycle of radiator formation cooling water expansion tank with maximum flow, simultaneously the temperature sensor on the calorstat rises water temperature and is converted into electric signal and is transferred to the interior circulating water cooling that the motor fan coolant-temperature switch control motor fan running that is installed on the radiator accelerates in the cooling radiator and is cooled to uniform temperature when following when water temperature, calorstat and motor fan quit work once more, guarantee that engine operating temperature is normal, the come to this work that goes round and begins again of interior circulating water cooling driving engine.The effect of standby little water tank is to be used for receiving automatically and the not enough or excessive usefulness of additional radiator cooling water inflow.The product of the transmission of outboard engine, propulsion system prior art and the system of mature and reliable and whole parts are to reduce production costs and application risk.

The utility model adopts above-mentioned improvement design-calculated beneficial effect to be: driving engine problems of excessive heat is in use solved at all, also fundamentally solved the engine metal surface by the problem of marine corrosion, driving engine is greatly prolonged service life, and simultaneously the noise that produces during engine running significantly reduces.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described further:

Fig. 1 is first embodiment outward appearance diagrammatic side views of the utility model

Fig. 2 is that second embodiment of the utility model overlooks diagrammatic cross-sectional view

Among the figure, 1, radiator, 2, upper shield.3, lower shield, 4, outboard engine fixed installation operation holder combination, 5, propeller under drive gear case, 6, propeller, 7, cylinder cover complement, 8, the cylinder band assembly, 9, piston assembly, 10, crank assemblby, 11, connecting rod complement, 12, crankcase assembly, 13, circulation cooling water road in the cylinder cover complement, 14, circulation cooling water road in the cylinder band assembly, 15, motor fan, 16, standby little water tank, 17, coolant inlet pipe, 18, coolant outlet pipe, 19, inlet valve, 20, exhaust valve, 21, light-up plug.

The specific embodiment

In first embodiment shown in Figure 1, because the two sides of cover (2) respectively have a big oblong aperture on the upper shield of engine installation (2) inherence, so that radiator (1) is installed.Radiator (1) is installed in the side of outboard engine guard shield (2), arranges the use, the operation and maintenance maintenance that promptly do not hinder outboard engine like this, does not influence driving engine again and outwards dispels the heat.Under protect; In the cover (3) transmission shaft is housed and small spiral bevel gear is installed in the lower end of transmission shaft.Be also referred to as driving gear, mesh together with the king bolt bevel gear that is installed in the propeller deceleration turning gear roller box (5).Reduced power running drives propeller (6) rotation.The promotion boats and ships advance or retreat.The king bolt bevel gear also claims ring gear.Outboard engine fixed installation operation holder combination (4) is as being fixedly mounted on the installation position of boats and ships afterbody so that the operation of outboard engine.

In second embodiment shown in Figure 2, radiator (1) is divided into two, the symmetrical both sides that are installed in driving engine are furnished with in cylinder cover complement (7), cylinder band assembly (8) circulation cooling water road (13) in the cylinder cover complement, circulation cooling water road (14) in the cylinder band assembly.Cooling water expansion tank is pumped in the cylinder band assembly circulation cooling water channel (14) by the single stage type centrifugal pump and enters the interior inlet valve (19) of the interior countercylinder cap assembly of cylinder cover complement circulation cooling water channel (13) (7) via cylinder band assembly circulation cooling water channel (14), exhaust valve (20) light-up plug (21) emphasis cools off, cooled cooling water expansion tank enters the cooling of dispelling the heat in the radiator (1) through coolant inlet pipe (17), cooled cooling water expansion tank through coolant outlet pipe (18) return the single stage type centrifugal pump go round and begin again carry out in circulating water cooling.Motor fan (15) is controlled at water temperature when being lower than a certain temperature by the coolant-temperature switch on the radiator (1), closes motor fan (15), reduces cooling power, when water temperature is higher than a certain temperature, opens motor fan (15), strengthens cooling power.Standby little water tank (16) is used for usefulness that the cooling water expansion tank in the radiator (1) is replenished or receives.

Claims

1, circulating water cooling driving engine is done the outboard engine of power in a kind of the employing, by outboard engine fixed installation operation holder combination (4), propeller under drive gear case (5), propeller (6), cylinder cover complement (7), cylinder band assembly (8), piston assembly (9), crank assemblby (10), connecting rod complement (11), crankcase assembly (12), circulation cooling water road (13) in the cylinder cover complement, circulation cooling water road (14) in the cylinder body assembly, motor fan (15), standby little water tank (16), coolant inlet pipe (17), coolant outlet pipe (18), inlet valve (19), exhaust valve (20), light-up plug (21) is formed, and it is characterized in that: in upper shield (2) hole 2 sheet heat radiators (1) are housed.