CN205936808U

CN205936808U - Novel accumbency two -stroke -cycle engine

Info

Publication number: CN205936808U
Application number: CN201620933549.0U
Authority: CN
Inventors: 杨绍明
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2017-02-08
Anticipated expiration: 2026-08-24

Abstract

The utility model discloses a novel accumbency two -stroke -cycle engine aims at providing the novel accumbency two -stroke -cycle engine of a good reliability. It includes crankcase, bent axle to and two sets of symmetries are installed in the acting device at crankcase both ends, rotate on the bent axle and install the slider, be provided with rectangle guide frame in the crankcase, the acting device includes cylinder jacket, cylinder head to reach the piston that one end has the piston rod, set up the direction sliding sleeve that supplies the piston rod to lead and out in the cylinder jacket, the middle part of cylinder head sets up the intake pipe to air inlet department in the intake pipe sets up one -way (air) intake valve, the cylinder jacket sets up towards the one end of crankcase has gas outlet and air inlet respectively, gas outlet department is provided with one -way discharge valve, air inlet department is provided with one -way admission valve, an intake -tube connection intercooler, the other end of intercooler passes through the pipe connection gas outlet, the air inlet passes through intake duct and external intercommunication, and is provided with the air throttle on the intake duct.

Description

A kind of new accumbency two stroke engine

Technical field

The utility model is related to technical field of internal combustion engines, especially relates to a kind of new accumbency two stroke engine.

Background technology

100 for many years, and people did not stop the research and development to combustion power and performance structure and explore, four cycle engine Machine technology seems to have reached the limit, and by the cold and detached two-stroke of a lot of years（Vertical horizontal）Engine technology, due to not very Find well engine breathing operational structure rule, be refer to new schedule by present designers now again.

Mention two stroke engine, we believe that a kind of its big, mechanical efficiency that is high oil consumption, high pollution discharge, noise The defect such as low, parts wear is fast, machine life is short, because two stroke engine does not have single lubricating system, not individually Scavenging stroke." being using traditional crankcase compression ventilation " has disadvantage all the time.

Two stroke engine has very big advantage in fact, and its torque ratio four stroke is uniform, powerful, almost The twice of four cycle engine.Low cost of manufacture, lightweight, small volume, parts are few, center of gravity is low, mounting arrangement is wide.As day The military machines of basis, Russia, the U.S. etc. adopt two stroke engine and gas turbine mostly.

State-of-the-art in the world two-stroke opposed type at present（Diesel oil and gasoline）Engine is that " Chrysler is public by the U.S. Department " invented a to be known as be two-stroke formula opposed engine unique in the world, its all technical has super More four-stroke engine performance.

This engine also has many technological deficiencies in fact.It is provided with four pistons, the six roots of sensation in its two groups of cylinders Connecting rod, or traditional swing type moves back and forth.Sheerly two single cylinder two-stroke motor top lands, to top, increased flat The engine of weighing apparatus bent axle, certainly will increase operation and consume.And six roots of sensation connecting rod moves back and forth, create inertia resistance and to piston Also create angle side wear, because gravitation can make piston cause eccentric wear.Four pistons are rows on a horizontal linear Row facing movement.How narrow can think that engine has？And it is unfavorable for cabin layout, piston stroke is subject to certain restrictions.Engine Structure or complex, more parts accuracies of manufacture have high demands so as to maintenance cost increases.

And its intake and exhaust scavenging functional structure relies solely on an electric booster to complete exhaust back pressure charge, this is Unmatched, it is not reaching to the purpose of forced flushing, pressure reduction is little, or the application of fresh air and mix waste gas.

Due to not having natural air-breathing instroke, during high about 4000 revs/min of rotating speed, piston-swept enters two stroke engine The speed of exhaust outlet, about at 1/200 second about, so wanting to reach the effect of four-stroke engine, is necessary for conscientiously going discovery to change Enter, solve the characteristics of motion of the important high speed scavenging back pressure pressure differential mass of two stroke engine.

Utility model content

The utility model overcomes shortcoming of the prior art, there is provided a kind of compact conformation, highly reliable and air inlet can The new accumbency two stroke engine leaning on.

In order to solve above-mentioned technical problem, the utility model is achieved through the following technical solutions：

A kind of new accumbency two stroke engine, including crankcase, is installed on the bent axle on crankcase by rolling bearing units, And two sets of acting devices being symmetrically arranged on crankcase two ends；On described bent axle, slide block is rotatablely equipped with by crankshaft bearing liner, It is provided with crankcase and surround slide block and the rectangle guide frame with the guiding cooperation of slide block both sides；Described acting device includes and song The cylinder jacket that axle box is fixedly connected, closed cylinder covers the cylinder head of end, and is slidably mounted in cylinder jacket and one end has The piston of piston rod；Described piston rod protrudes horizontally up cylinder jacket towards crankcase direction and stretches in crankcase, and guides with rectangle This side of framework is fixedly connected；The guide sleeve passing for piston rod guiding is arranged on described cylinder jacket；In described cylinder head Portion arranges air inlet pipe, and arranges one-way inlet valve at the air inlet of air inlet pipe；Described cylinder jacket sets towards one end of crankcase Putting has gas outlet and air inlet respectively, is provided with one-way exhaust valve at described gas outlet, be provided with described air inlet unidirectional enter Air valve；Described air inlet pipe connects a charge air cooler, and the other end of described charge air cooler connects gas outlet by pipeline；Described air inlet leads to Cross air intake duct to be in communication with the outside, and air throttle is provided with air intake duct；Spark plug and atomizer are provided with described cylinder jacket；Institute State and in the middle part of cylinder jacket, be provided with some exhaust outlets, the outer wall of described cylinder jacket is provided with collects the exhaust that exhaust outlet discharges waste gas Pipe.

Preferably, described cylinder jacket and cylinder head are provided with cooling jacket.

Preferably, also include being arranged at the oil sump of bent axle lower box part, and engine oil pump assembly.

Preferably, described piston outer wall is provided with piston ring and malthoid ring.

Preferably, it is provided with oil sealing in described guide sleeve.

Preferably, described crankcase is provided with crankshaft end cover, described crankcase is provided with song for the place of passing of bent axle Shafting oil seals.

Preferably, the end of described piston is convex surface, and the inwall of described cylinder head is formed and pistons end cooperation Concave curved surface.

Preferably, described cylinder jacket is provided with dismountable bottom cylinder cap towards one end of crankcase.

Preferably, described piston and the contactless abrasion of cylinder liner internal wall.

Preferably, described one-way inlet valve is at air inlet that is horn-like and being overlapped in air inlet pipe, and its one end setting There is return spring.

Compared with prior art, the utility model has the advantage that：

The structure of this horizontal type two stroke engine and scavenging period employ new research and development, dynamic using piston lower chamber State stroke rule realizes self supercharging forced flushing.

Horizontal type two-stroke internal combustion engine carry out " one-dimensional " and " three using to the whole scavenging period of air inlet system and exhaust system Dimension " numerical simulation analysis have developed the piston type stroke aeration quantity of innovation, and pressure reduction controls gas handling system, to valve timing and scavenging Mouth angled arrangement is optimized transformation, to reach the optimum target controlling scavenging efficiency and scavenging quality.

The utility model, with maximum IMEP and fuel economy for optimizing purpose, determines the optimum exhaust back pressure of different operating modes And delivery ratio, depending on intake pressure difference, pressure reduction is bigger, and scavenging efficiency is higher for scavenging efficiency, and exhaust back pressure is that impact capture is fresh The principal element of air capacity, when delivery ratio is certain（More than 1）When, exhaust back pressure is higher, and capture amount of fresh air is bigger.The machine is not Need to supplement source of the gas by installing any booster.Horizontal type two stroke engine it be real horizontally-opposed a, company Two pistons of bar do work in turn, and when often rotating 180 °, one, in acting, drives another compression.And two piston rod fortune When dynamic, definitely no a bit angle swings acting.

The utility model long service life, low cost, rotation are soft steadily, are can to substitute existing tradition two-stroke to start Machine and a new generation's first-selection new work engine surmounting four-stroke engine.

Brief description

In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, before not paying creative labor Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is structural representation of the present utility model.

Fig. 2 be Fig. 1 in A to partial schematic diagram, wherein illustrate only part-structure.

In figure：1- bent axle, 2- piston rod, 3- piston, 4- piston ring, 5- slide block, 6- rectangle guide frame, 7- guiding is slided Set, 8- cylinder head, 9- bottom cylinder cap, 10- one-way inlet valve, 11- return spring, 12- spark plug, 13- atomizer, 14- individual event Air bleeding valve, 15- exhaust outlet, 16- blast pipe, 17- malthoid ring, 18- cooling jacket, 19- charge air cooler, 20- air inlet pipe, 21- solar term Door, 22- engine oil pump assembly, 23- oil sump, 24- oil sealing, 25- cylinder jacket, 26- crankshaft end cover, 27- spindle bearing bush, 28- ushers to seat Bearing, 29- crankcase, 30- trunnion, 31- crankshaft bearing liner, 32- crankshaft oil seal, 33- breather cheek valve.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of paying creative work The every other embodiment being obtained, broadly falls into the scope of the utility model protection.

New accumbency two stroke engine shown in Fig. 1-2, including crankcase 29, is installed on bent axle by rolling bearing units 28 Bent axle 1 on case 29, and two sets of acting devices being symmetrically arranged on crankcase 29 two ends；Crankshaft is passed through on described bent axle 1 Watts 31 are rotatablely equipped with slide block 5, be provided with and surround slide block 5 and the rectangle guiding with the guiding cooperation of slide block 5 both sides in crankcase 29 Framework 6；Described acting device includes the cylinder jacket 25 being fixedly connected with crankcase 29, and closed cylinder covers the cylinder head 8 of 25 ends, And be slidably mounted in cylinder jacket 25 and one end has the piston 3 of piston rod 2；Described piston rod 2 is towards crankcase 29 direction water Flattened go out cylinder jacket 25 stretching in crankcase 29, and be fixedly connected with this side of rectangle guide frame 6；In described cylinder jacket 25 The guide sleeve 7 that setting passes for piston rod 2 guiding；The middle part setting air inlet pipe 20 of described cylinder head 8, and in air inlet pipe 20 One-way inlet valve 10 is set at air inlet；Described cylinder jacket 25 has gas outlet and air inlet respectively towards one end setting of crankcase 29 Mouthful, it is provided with one-way exhaust valve 14 at described gas outlet, at described air inlet, be provided with breather cheek valve 33；Described air inlet pipe 20 Connect a charge air cooler 19, the other end of described charge air cooler 19 connects gas outlet by pipeline；Described air inlet pass through air intake duct with Extraneous connection, and air throttle 21 is provided with air intake duct；Spark plug 12 and atomizer 13 are provided with described cylinder jacket 25；Described It is provided with some exhaust outlets 15, the outer wall of described cylinder jacket 25 is provided with collects exhaust outlet 15 discharge waste gas in the middle part of cylinder jacket 25 Blast pipe 16.

It is provided with cooling jacket 18 in described cylinder jacket 25 and cylinder head 8.

Also include being arranged at the oil sump 23 of crankcase 29 bottom, and engine oil pump assembly 22.

It is provided with piston ring 4 and malthoid ring 17 on described piston 3 outer wall.

It is provided with oil sealing 24 in described guide sleeve 7.

Crankshaft end cover 26 is provided with described crankcase 29, described crankcase 29 is provided with bent axle for the place of passing of bent axle 1 Oil sealing 32.

The end of described piston 3 is convex surface, and the inwall of described cylinder head 8 forms the concave curved surface with the cooperation of piston 3 end.

Described cylinder jacket 25 is provided with dismountable bottom cylinder cap 9 towards one end of crankcase 29.

Described piston 3 and the contactless abrasion of cylinder jacket 25 inwall.Described cylinder head 8 and cylinder jacket 25 are bolted.

Described one-way inlet valve 10 is at air inlet that is horn-like and being overlapped in air inlet pipe, and its one end is provided with return bullet Spring 11.

Described rolling bearing units 28 are connected with bent axle 1 by spindle bearing bush 27.

The course of work is as follows：When piston 3 arrives near top dead center, fuel injector is started to spray vaporific mist of oil and is mixed into air Gaseous mixture, spark ignitor combustion mixture, gas expansion promotes piston 3 to move down, and at this moment breather cheek valve 33 is closed, and enters gas The air of cylinder sleeve 25 is compressed and is pushed open one-way exhaust valve 14, and air forms pre-compressed gas after entering charge air cooler 19 cooling, and band is lived When filling in 3 descending tops and exposing exhaust outlet 15, when gaseous-pressure moment goes out steep fall less than admission pressure, valve is pushed away automatically by pressure Open, fresh air pours cylinder, drive away waste gas, this process is performance and the efficiency determining each cylinder of two stroke engine.

Using piston 3 bottom natural stroke space, can continuously constitute " lung organ " of engine, enforce Compression fresh air, after charge air cooler 19 is lowered the temperature, can obtain high speed, efficient scavenging effect, enter the air compression of cylinder Uninterrupted can be controlled ratio by air throttle 21, need not install any booster.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all this Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in the utility model Protection domain within.

Claims

1. a kind of new accumbency two stroke engine, including crankcase, is installed on the bent axle on crankcase by rolling bearing units, with And two sets of acting devices being symmetrically arranged on crankcase two ends；It is characterized in that：On described bent axle, peace is rotated by crankshaft bearing liner Equipped with slide block, it is provided with crankcase and surrounds slide block and the rectangle guide frame with the guiding cooperation of slide block both sides；Described acting dress Put including the cylinder jacket being fixedly connected with crankcase, closed cylinder covers the cylinder head of end, and is slidably mounted in cylinder jacket And one end has the piston of piston rod；Described piston rod protrudes horizontally up cylinder jacket towards crankcase direction and stretches in crankcase, and It is fixedly connected with this side of rectangle guide frame；The guide sleeve passing for piston rod guiding is arranged on described cylinder jacket；Described The middle part setting air inlet pipe of cylinder head, and one-way inlet valve is set at the air inlet of air inlet pipe；Described cylinder jacket is towards bent axle One end setting of case has gas outlet and air inlet respectively, is provided with one-way exhaust valve, sets at described air inlet at described gas outlet It is equipped with breather cheek valve；Described air inlet pipe connects a charge air cooler, and the other end of described charge air cooler connects gas outlet by pipeline；Institute State air inlet to be in communication with the outside by air intake duct, and air throttle is provided with air intake duct；It is provided with spark plug in described cylinder jacket And atomizer；It is provided with some exhaust outlets, the outer wall of described cylinder jacket is provided with collection exhaust outlet and discharges in the middle part of described cylinder jacket The blast pipe of waste gas.

2. new accumbency two stroke engine according to claim 1 it is characterised in that：In described cylinder jacket and cylinder head It is provided with cooling jacket.

3. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Also include being arranged at bent axle The oil sump of lower box part, and engine oil pump assembly.

4. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Set on described piston outer wall It is equipped with piston ring and malthoid ring.

5. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Set in described guide sleeve It is equipped with oil sealing.

6. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Arrange on described crankcase There is crankshaft end cover, described crankcase is provided with crankshaft oil seal for the place of passing of bent axle.

7. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：The end of described piston is Convex surface, the inwall of described cylinder head forms the concave curved surface with pistons end cooperation.

8. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Described cylinder jacket is towards song One end of axle box is provided with dismountable bottom cylinder cap.

9. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Described piston and cylinder jacket The contactless abrasion of inwall.

10. new accumbency two stroke engine according to claim 1 and 2 it is characterised in that：Described one-way inlet valve is in At air inlet that is horn-like and being overlapped in air inlet pipe, and its one end is provided with return spring.