CN206175017U - Variable reciprocating type explosive motor of expansion -pressure ratio piston - Google Patents

Abstract

The utility model relates to a variable reciprocating type explosive motor of expansion -pressure ratio piston comprises cylinder system, the casing body, boot disk, flywheel, silencer and crank mechanism, crank mechanism is equipped with in the internal portion of casing, and this crank mechanism is equipped with the boot disk, crank mechanism installation gear is and this gear meshes with cam gears mutually, and this cam gears connects (air) intake valve cam, exhaust cam respectively, advances valve rocker under the (air) intake valve cam fixed mounting, and the lower row valve rocker of exhaust cam fixed mounting meets with the valve ejector pin lower extreme that corresponds respectively on these two valve rocker, connects gradually enterprising valve rocker on two valve ejector pins and arranges valve rocker on, the crank mechanism top sets up cylinder system, and the exhaust duct terminal surface of cylinder head is equipped with the silencer. The utility model discloses beneficial effect does: can satisfy acting inflation thrust stroke completely, energy make full use of, power is bigger by 50% than prior art's engine, and sound lacks half thely during the operation than prior art's.

Description

A kind of variable expansion is than piston reciprocating type explosive motor

Technical field

The utility model is related to internal combustion engine technologies field, more particularly to a kind of variable expansion than piston reciprocating type internal combustion Engine.

Background technology

Existing internal combustion engine cylinder structure is usually that it is internal equipped with piston, and piston is by piston pin, connecting rod and song Axle is connected, and piston is reciprocating in cylinder, and by connecting rod crank rotation is promoted, and is that suction live gas and discharge are useless Gas, is provided with inlet valve and exhaust valve.

Meanwhile, piston is lifted off crankshaft center farthest, i.e. piston extreme higher position, referred to as top dead centre；Top land is from bent axle Center most nearby, i.e. piston extreme lower position, referred to as lower dead center；Distance between upper and lower stop is referred to as piston stroke, bent axle and connecting rod The distance at the connection center to crankshaft center of lower end is referred to as crank throw, and piston often walks a stroke corresponding to crank angle 180°；For the engine that cylinder centerline passes through crankshaft axis, piston stroke is equal to the twice of throw of crankshaft.

The inswept volume from top dead centre to lower dead center of piston is referred to as the swept volume or engine displacement of engine, four punchings The working cycles of journey engine include four piston strokes, i.e. suction stroke, compression travel, expansion stroke (working stroke) and row Gas stroke.

This case it is important to note that prior art has a very big inferior position, such as the stroke of working stroke not enough, when Spark lights mixed gas, the promotion piston movement that the gas of burning drastically expands to it is low when, expansion thrust at least also has 40%, At this moment but push away to go down, exhaust valve is opened, energy waste in vain.

Therefore, for the above, need reasonably to improve prior art.

Utility model content

For disadvantages described above, the utility model provides a kind of variable expansion than piston reciprocating type explosive motor, to solve Many deficiencies of prior art.

For achieving the above object, the utility model is employed the following technical solutions：

A kind of variable expansion than piston reciprocating type explosive motor, by cylinder system, casing body, boot disk, flywheel, noise elimination Device and crank mechanism are constituted, and the machine enclosure interior is equipped with crank mechanism, and the crank mechanism is equipped with boot disk；

The crank mechanism installs gear and the gear is meshed with cam wheel, and the cam wheel connects respectively air inlet Door cam, exhaust valve cam, inlet valve rocker under inlet valve cam fixed installation therein, exhaust valve cam therein fixes peace Exhaust valve rocker is loaded, is connected with corresponding valve stem lower end respectively on the two valve rockers, on this two valve stems End is sequentially connected enterprising valve rocker, upper exhaust valve rocker, and enterprising valve rocker therein connects with inlet valve, upper row therein Valve rocker connects with exhaust valve；

The crank mechanism top arranges cylinder system, and crank mechanism connects connecting rod and the small end is equipped with piston Pin, the piston pin fixedly mounts piston and this piston is reciprocating in cylinder jacket, and cylinder jacket top is equipped with cylinder head, gas The discharge duct end face of cylinder cap is equipped with silencer；Meanwhile, the crank mechanism end is equipped with flywheel, and the flywheel is produced by rotating Inertia, drives crank mechanism to rotate.

The crank mechanism eccentric throw is than conventional crankshafts one times of distance of bias；

The connecting rod is longer than corresponding traditional components one times, and cylinder jacket is longer than corresponding traditional components one times.

If piston movement is to the half of suction stroke, inlet valve cam is by IC Intake Valve Closes；

If the raised distance of the minimum point of inlet valve cam and peak is not enough, distance is supplemented by lower inlet valve rocker.

Variable expansion having the beneficial effect that than piston reciprocating type explosive motor described in the utility model：By bent axle machine Structure and the reasonable setting of push and pull system intraware, can fully meet acting expansion thrust stroke, and energy makes full use of, and power will It is bigger than the engine of prior art by 50%, few half of the sound than prior art in the running；Can be real by lower inlet valve rocker When now the raised distance of the minimum point of inlet valve cam and peak is inadequate, distance is supplemented by lower inlet valve rocker.

Description of the drawings

The utility model is described in further detail below according to accompanying drawing.

Fig. 1 is the outside schematic diagram of explosive motor described in the utility model embodiment；

Fig. 2 is the side schematic view of explosive motor described in the utility model embodiment；

Fig. 3 is the decomposition texture schematic diagram inside explosive motor described in the utility model embodiment.

In figure：

1st, cylinder system；2nd, casing body；3rd, boot disk；4th, flywheel；5th, high voltage package；6th, igniter；7th, silencer；8th, bent axle Mechanism；9th, gear；10th, cam wheel；

11st, trigger point；12nd, trigger；13rd, connecting rod；14th, piston；15th, cylinder jacket；16th, inlet valve；17th, exhaust valve；18、 Valve spring；19th, valve stem；110th, lower inlet valve rocker；111st, lower exhaust valve rocker；112nd, inlet valve cam；113rd, arrange Valve cam；114th, upper rocker arm seat；115th, upper exhaust valve rocker；116th, enterprising valve rocker.

Specific embodiment

As Figure 1-3, the variable expansion described in the utility model embodiment is than piston reciprocating type explosive motor, by gas Cylinder system 1, casing body 2, boot disk 3, flywheel 4, silencer 7 and crank mechanism 8 are constituted, and the inside of the casing body 2 is equipped with song Axis mechanism 8, the crank mechanism 8 is equipped with the boot disk 3 for starting engine, in addition, also carrying magneto rotor in order to carry For igniter 6, high voltage package and the power supply of spark plug, the connection high voltage package 5 of igniter 6, the periphery of boot disk therein 3 is furnished with trigger point 11 with trigger 12；

Correspondingly, the crank mechanism 8 installs gear 9 and the gear 9 is meshed with cam wheel 10, the cam wheel 10 connect respectively inlet valve cam 112, exhaust valve cam 113, the lower inlet valve rocker of the fixed installation of inlet valve cam therein 112 110, the lower exhaust valve rocker 111 of the fixed installation of exhaust valve cam therein 113, on the two valve rockers respectively with corresponding gas Door push rod 19 lower end connects, and this two upper ends of valve stem 19 are sequentially connected enterprising valve rocker 116, upper exhaust valve rocker 115, Enterprising valve rocker 116 therein connects with inlet valve 16, and upper exhaust valve rocker 115 therein connects with exhaust valve 17, each Valve periphery arranges valve spring 18；In addition, the enterprising valve rocker 116, the lower section of upper exhaust valve rocker 115 configuration upper rocker arm Seat 114；

Correspondingly, the top of the crank mechanism 8 arranges cylinder system 1, the connection connecting rod 13 of crank mechanism 8 and the connecting rod 13 Upper end is equipped with piston pin, and the piston pin fixedly mounts piston 14 and this piston 14 is reciprocating in cylinder jacket 15, cylinder The top of set 15 is equipped with cylinder head, and the admission line end face of cylinder head is equipped with carburetor, and the discharge duct end face of cylinder head is equipped with and disappears Sound device 7；Meanwhile, the end of the crank mechanism 8 is equipped with flywheel 4 and the flywheel 4 produces inertia by rotation, drives crank mechanism 8 rotate；

Correspondingly, the eccentric throw of the crank mechanism 8 is than conventional crankshafts one times of distance of bias；

When inlet valve cam 112 is used to realize that piston 14 moves to the half of suction stroke, inlet valve 16 is closed；

When lower inlet valve rocker 110 is used to realize that the raised distance of the minimum point and peak of inlet valve cam 112 is inadequate, Distance can be supplemented by lower inlet valve rocker 110；

For cylinder system 1, connecting rod 13 is longer than corresponding traditional components one times, and cylinder jacket 15 is longer than corresponding traditional components One times；

Than piston reciprocating type explosive motor, operation logic is variable expansion described in above the utility model embodiment：

1. suction stroke：Carburetor gasoline engine can be adopted to carry out in the first carburetor outside cylinder of air and fuel Mixing, then sucks again cylinder, and in suction stroke, inlet valve is opened, exhaust valve closing, as piston is from top dead centre to lower dead center When mobile, below the reduced pressure above piston to atmospheric pressure, i.e., pull of vacuum is caused in cylinder, so, flammable mixing Just Jing admission lines and inlet valve are inhaled into cylinder, IC Intake Valve Closes when piston moves to the half of stroke to gas；

Meanwhile, when the raised distance of the minimum point of lower inlet valve cam and peak is inadequate, by lower inlet valve rocker come Distance is supplemented, inlet valve is opened, the IC Intake Valve Closes when the half of piston movement to stroke, at this moment keep next stroke (value of compression ratio) compression ratio is that standard is constant, will not produce any impact, and after IC Intake Valve Closes, piston continues fortune downwards Dynamic, now, can produce the vacuum (negative pressure) of very little can have a pulling force to piston, and until next stroke, piston is transported upwards When dynamic, there is same pulling force, how many energy will not be consumed；

2. compression travel：To enable combustion mixture in suction cylinder to burn rapidly, to produce larger pressure, so that Engine sends relatively high power, it is necessary to before combustion compress combustion mixture so as to smaller volume, increase in density, temperature liter Height, that is, need compression process, and in this process, inlet and outlet door Close All, bent axle promotes piston to be stopped upwards by lower dead center The mobile stroke of point is referred to as compression travel；When compression ends, piston reaches top dead centre, and piston top forms little space, claims For combustion chamber, the ratio for compressing the minimum volume in front air cylinder after the maximum volume of gas and compression is referred to as compression ratio；

3. working stroke：In this stroke, inlet and outlet door is remained off, and when the piston is near the top dead centre, is mounted in startup Disk trigger point alignment trigger send pulse signal, to igniter and high voltage package so that spark plug sends electric spark, light by The combustion mixture of compression, after combustion mixture is burned, releases substantial amounts of heat energy, therefore, the pressure and temperature of combustion gas is rapid Increase, the maximum pressure to be reached is about 3-5Mpa, corresponding temperature is 1700~2400 DEG C；The combustion gas of HTHP is promoted Piston is moved from top dead centre to lower dead center, and by connecting rod bent axle rotation and output mechanical energy are made, except being used for maintaining engine sheet Body remains in operation and outer, and remaining is used for externally acting；

Meanwhile, acting expansion stroke increases one times, and stroke is increased, and parts also will and then lengthen the (bias of bent axle Away from lengthening one times, connecting rod lengthens one times, and cylinder lengthens one times) these three major parts all increase one times, that is, connecting rod Increase to the distance of bent axle pivot with the connecting shaft center of bent axle, the expansive force that does work increases the moment of torsion of bent axle pivot , also meeting acting expansion thrust stroke, energy is just fully utilized, and its power is bigger than the engine of prior art 50%, few half of the sound than prior art in the running.

4. instroke：The waste gas generated after combustion mixture burning must be excluded from cylinder, to carry out the next one Suction stroke, when expansion is close to end, exhauxt valve opens carries out free exhaust by the pressure of waste gas, and piston reaches lower dead center When moving to top dead centre again afterwards, continue to force waste gas to be discharged in air, when piston is near top dead center, instroke terminates it Advantage.

The above-mentioned description to embodiment is it will be appreciated that and using this for the ease of those skilled in the art Case technology, those skilled in the art obviously can make easily various modifications to these examples, and described herein general Principle is applied in other embodiments without through performing creative labour.Therefore, this case is not limited to above example, this area Technical staff according to the announcement of this case, the improvement made for this case and modification, for example, for valve actuating mechanism component model, The equivalence replacement of size, outer fractal transform that casing periphery increases etc., if not producing the beneficial effect outside this case, all Should be in this case protection domain.

Claims (6)

1. a kind of variable expansion is than piston reciprocating type explosive motor, it is characterised in that by cylinder system (1), casing body (2), Boot disk (3), flywheel (4), silencer (7) and crank mechanism (8) composition, is equipped with crank mechanism inside the casing body (2) (8), the crank mechanism (8) is equipped with boot disk (3)；

The crank mechanism (8) installs gear (9) and the gear (9) is meshed with cam wheel (10), the cam wheel (10) connect inlet valve cam (112), exhaust valve cam (113) respectively, enter under inlet valve cam (112) fixed installation therein Valve rocker (110), exhaust valve rocker (111) under exhaust valve cam (113) fixed installation therein, on the two valve rockers Connect with corresponding valve stem (19) lower end respectively, this two valve stem (19) upper ends are sequentially connected enterprising valve rocker (116), upper exhaust valve rocker (115), enterprising valve rocker (116) therein connects with inlet valve (16), upper exhaust therein Door rocking arm (115) connects with exhaust valve (17)；

Crank mechanism (8) top arranges cylinder system (1), crank mechanism (8) connection connecting rod (13) and the connecting rod (13) Upper end is equipped with piston pin, and piston pin fixed installation piston (14), cylinder jacket (15) top is equipped with cylinder head, the exhaust of cylinder head Pipeline end face is equipped with silencer (7)；Crank mechanism (8) end is equipped with flywheel (4).

2. variable expansion according to claim 1 is than piston reciprocating type explosive motor, it is characterised in that：The bent axle machine Structure (8) eccentric throw is than conventional crankshafts one times of distance of bias.

3. variable expansion according to claim 1 is than piston reciprocating type explosive motor, it is characterised in that：The connecting rod (13) it is longer than corresponding traditional components one times.

4. variable expansion according to claim 1 is than piston reciprocating type explosive motor, it is characterised in that：The cylinder jacket (15) it is longer than corresponding traditional components one times.

5. variable expansion according to claim 1 is than piston reciprocating type explosive motor, it is characterised in that：If piston (14) The half of suction stroke is moved to, inlet valve cam (112) closes inlet valve (16).

6. variable expansion according to claim 1 is than piston reciprocating type explosive motor, it is characterised in that：If inlet valve is convex The distance that the minimum point and peak of wheel (112) are raised is inadequate, and by lower inlet valve rocker (110) distance is supplemented.