CN102119266A

CN102119266A - Integrally cast block and upper crankcase

Info

Publication number: CN102119266A
Application number: CN2009801295407A
Authority: CN
Inventors: 杰·S·维拉萨帕; 纳格旭·西达帕萨帕·马云纳哈利; 普旭帕拉萨·马云纳哈利
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-08
Filing date: 2009-08-07
Publication date: 2011-07-06
Also published as: WO2010017442A1

Abstract

An integrally cast four-stroke engine mono-block includes integrally cast cylinder block, cylinder head, and portion of a crankcase including crankcase outboard and inboard walls. At least parts of outer and inner bearing bosses are integrally cast with the cylinder block with the inner bearing boss integrally cast in the inboard wall. At least one cored out longitudinally extending open valve train chamber is disposed between the outboard wall and the cast cylinder block. An alternative embodiment of the integrally cast four-stroke engine monoblock includes at least parts of an outer bearing boss and/or an inner bearing boss integrally cast in the outboard and inboard walls respectively with the cast cylinder block. At least one cored out longitudinally extending open valve train chamber is disposed between the outboard wall and the cast cylinder block. Push tube passages or a belt drive passage may be in the valve train chamber.

Description

Integrated cylinder and upper crankcase

Technical field

The present invention relates to a kind of engine components, particularly a kind of integrated cylinder reaches goes up bent case.

Background technique

Compare with two stroke engine, traditional four stroke engine part is more, there are some unfavorable factors, for example, additional structure comprises the valve train of suction valve and outlet valve, used follow-up unit in the ejector sleeve mechanism, described ejector sleeve mechanism is used in action is sent to rocking bar from the cam convex surface, and this rocking bar only is used in overhead cam device or belt chain type overhead cam.In addition, as this design, also have cam gear or pulley, in other some designs, also can comprise valve spring, guard circle, valve spring and camb cap.The method of assembling critical piece is not quite similar, and decides on the compound mode between cylinder, crankcase, crankcase cover, piston rod, the arbor.

As everyone knows, four stroke engine comprises cylinder block (may comprise independently cylinder head) and crankcase in the prior art, and visual concrete condition is provided with crankcase cover.For example, the cylinder that MTD Southwest produces comprises and the integrated cylinder head of cylinder, independently crankcase and independently volute, and described crankcase is provided with the main bearing that can support arbor, described volute links to each other with crankcase, and described volute comprises the sleeve that is used for ignition module.The another one similar device is the motor that Honda is produced, and its cylinder block comprises a cylinder, and upper half part of crankcase and described cylinder are one-body molded, and the lower half portion with crankcase is assembled again, can supports main shaft hold.

Among the design, do not have independently crankcase cover, and the belt conveying means that is connected with the top set air valve is a wet type, the crankcase of upper half part and lower half portion forms a pond body, is used to store lubricant oil, described line belt complete closed, one-body molded with upper half part of crankcase, at american documentation literature 6,539,904,6,672,273,6,427,672,6,508,224,6,705,263 (line belts), with 6, disclose similar device in 021,766 (ejector sleeve), all be used for the ejector sleeve system of valve train.

In some full curly hair motivations that Honda company produces, relative arbor position, the position of crankcase becomes certain angle of inclination, at american documentation literature 6,250, just discloses such structure in 273 and 6,644,290.The front half part and the engine block of crankcase are one-body molded, comprise the bearing support that is used to support the crankcase front half part, and the latter half part of crankcase has a bearing support that is used to support the external lateral portion of arbor.Transmit the cam gear of power or the external lateral portion that pulley is arranged at described arbor to the top set porthole.American documentation literature 6,250 has following shortcoming in the disclosed cylinder structure in 273, needs each cover plate come supporting cam wheel axle and gear at camming surface, and the same with problems of the prior art, parts such as the adapter that needs, fastening piece, pad are more.At american documentation literature 6,250, in 273 and 6,644, the 290 disclosed structures, need an external support structure structurally to support arbor, described supporting structure is indispensable.Compare with it, present disclosed engine device is provided with two supporting structures at homonymy, need be in the extra supporting structure of arranged outside.

American documentation literature 6,213,079,7,243,632, with 6,119, the motor that is provided with ejector sleeve is disclosed in 648, some motors pass power to the top set air valve from arbor by the gear rotation. at american documentation literature 6,152,098 and 6,612, in 275, described gear rotational speed is half of arbor rotating speed.In most cases, motor has two cylinder blocks, upper half part/front half part of crankcase and lower half portion/external lateral portion of crankcase, and valve train is located at the external lateral portion of described crankcase.

In american documentation literature 6,119, the 648 disclosed technology of Kioritz, crankcase comprises upper half part and lower half portion (or left-half and right half part), its shortcoming is that at first upper half part and the lower half portion with crankcase is assembled together, and then the machining bearing chamber.Just can carry out final assembling after so needing to take apart, and part is not interchangeable.Need gasket seal to seal between two parts of crankcase, compare with the present invention, this production cost of products is higher.

American documentation literature 7,559 disclosed the motor of the single module of better simply two strokes of structure in 299 and 2,218,332, because the motor of two strokes does not have automobile door structure, so processing easily.In addition, in this design, the path that connects crankcase body and motor bottom turns to the firing chamber, has realized being connected of crankcase body and firing chamber, does not relate to the path of valve train, and in path valve train can not be set.American documentation literature 4,513, in the 702 disclosed valve trains, comprise one with the perpendicular camshaft of arbor axis, form two cams, one is used for suction valve, and one is used for outlet valve, in therefore should inventing, an independent nose of cam is not suitable for american documentation literature 4,513, in 702.In addition, opening is obliquely installed and line belt can not drive the cam rotation axle at top.

Therefore, engine designer is being attempted a kind of assembly of design motor few, simple in structure and that cost of production is lower of trying one's best always.

Summary of the invention

For this reason, the technical problem to be solved in the present invention is, propose a kind of simple in structure, cylinder and upper crankcase thereof cheaply.

A kind of integrated four stroke engine cylinder of the present invention, the part-structure of cylinder block, cylinder head and crankcase is one-body molded, and described crankcase comprises crankcase outer wall and crankcase inwall; At least the part-structure and the cylinder block of inner pedestal and outer bearing carrier are formed in one; Inner pedestal is located on the described crankcase inwall; Be provided with the open valve porthole Transmission Room of at least one longitudinal extension between outer wall and the integrated cylinder block.

A kind of integrated four stroke engine cylinder, cylinder block, cylinder head and crankcase part-structure are one-body molded, and described crankcase comprises crankcase outer wall and crankcase inwall; Inner pedestal and/or outer bearing carrier are located on described crankcase outer wall and the described crankcase inwall, and have at least a part of structure and cylinder block to be formed in one; Be provided with the open valve porthole Transmission Room of at least one longitudinal extension between described crankcase outer wall and the integrated cylinder block.

Integrated four stroke engine cylinder comprises also that in the porthole Transmission Room transmission pipeline of dispersing distribution outside one or more therefrom mind-sets is as ejector sleeve pipeline or belt transfer canal.Described cylinder seat is one-body molded outer igniter seat.Also comprise outer bearing carrier, the described outer bearing carrier part-structure for example upper half part and the described cylinder of outer bearing carrier is one-body molded.Comprise also and the integrated crankcase inwall of engine cylinder that the part-structure of inner pedestal and outer bearing carrier correspondingly is installed on the outer wall and inwall of described crankcase.

A kind of integrated four stroke engine cylinder, the part-structure of cylinder block, cylinder head and crankcase is one-body molded, and described crankcase comprises crankcase outer wall, crankcase inwall and outer wall extension; Outer bearing carrier is arranged on the outside extension of crankcase, and the clutch shaft bearing seat is arranged at described crankcase outer wall, and second bearing support is arranged at described crankcase inwall; At least be provided with an open valve porthole Transmission Room longitudinally between described crankcase outer wall and the described cylinder block.

A kind of integrated four stroke engine cylinder, cylinder block, L type cylinder head, part crankcase are one-body molded, and described crankcase comprises crankcase outer wall and crankcase inwall; The inner pedestal that is molded over the outer bearing carrier of described crankcase outer wall and/or is molded over described crankcase inwall part-structure and cylinder block at least is one-body molded; At least form an open valve porthole Transmission Room longitudinally between described crankcase outer wall and the described cylinder block; Described L type cylinder head covers porthole Transmission Room and cylinder chamber and takes shape in the cylinder block and with inwall and separate every setting.

A kind of quartastroke engine, the part-structure and the cylinder head of cylinder block and crankcase are one-body molded, wherein, described crankcase comprises crankcase outer wall and the crankcase inwall that extends from cylinder block downwards, described cylinder head extends downwards from cylinder block, inner pedestal, outer bearing carrier are separately positioned on crankcase inwall and the crankcase outer wall, and described crankcase outer wall and described cylinder block are one-body molded; At least be provided with an open valve porthole Transmission Room longitudinally between described crankcase outer wall and the described cylinder block, half structure division of arbor passes inner bearing and outer bearing, and be supported at inner pedestal and described outer bearing carrier inside respectively, valve train vertically passes describedly to be left valve formula steam-operating Transmission Room and flexibly connects with it, thereby and is used to transmit action opening and closing valve from described arbor.

Described internal-combustion engine also comprises the counterweight on the arbor of an inboard that is installed on inner bearing, valve train comprises the ejector sleeve that is arranged in the porthole Transmission Room, the channel-active that described ejector sleeve and nose of cam form is connected, and described nose of cam is installed on half arbor between inner bearing and the outer bearing.

A kind of quartastroke engine of L-shape head comprises integrated L shaped four stroke engine cylinder, and described cylinder comprises and L shaped first body formed cylinder block and crankcase that described crankcase comprises crankcase inwall and crankcase outer wall; The inner pedestal that is molded over the outer bearing carrier of described crankcase outer wall and/or is molded over described crankcase inwall part-structure and cylinder block at least is one-body molded; The open valve porthole Transmission Room of at least one longitudinal extension is located between described crankcase outer wall and the cylinder block; Also comprise and cover L shaped head and cylinder chamber on described porthole Transmission Room, described cylinder chamber is located in the cylinder block and with the crankcase inwall and is separated setting; The part of arbor is between inner bearing and outer bearing; The porthole Transmission Room passes the porthole Transmission Room and flexibly connects with it and is used for thereby the power to arbor is transmitted the opening and closing valve.

Also comprise L shaped head valve chamber, described L shaped head valve chamber is located in the porthole Transmission Room; Be located at and be used for controlling the suction valve mechanism of air inlet in the described L shaped head valve chamber and be located at the exhaust valve mechanism that described L shaped head valve chamber is used to control exhaust.

Also comprise pipeline, connecting tube links together vaporizer and crankcase cavity to described pipeline in the described suction valve mechanism by being located at.

Also comprise one-way valve, described one-way valve is located at movably and describedly is used for preventing in pipeline being back to surrounding environment and the first stroke pipeline and the second stroke pipeline by vaporizer, wherein, the first stroke pipeline and the second stroke pipeline link together vaporizer and the firing chamber of being located in the cylinder chamber with described by suction valve mechanism.

Comprise the first stroke pipeline and the second stroke pipeline again, the described first stroke pipeline and the second stroke pipeline link together vaporizer and the firing chamber of being located in the cylinder chamber by the suction valve assembly; The vaporizer valve of vaporizer has movable first valve and second valve that is provided with and is used for regulating respectively the first stroke pipeline and the ducted flow of second stroke.

Part internal-combustion engine comprises that also described crankcase cover covers and is being arranged on the crankcase crankcase chamber, and the crankcase chamber is separated, and described crankcase cover begins to extend from the oil pump between crankcase cover and the oil pump wall; Also comprise the pipeline that is arranged between crankcase cavity and the oil pump, described pipeline extends to oil pump from crankcase cover, perhaps is provided with groove walls around the groove that stretches into oil pump.Also comprise one or more fuel lines, be arranged at from crankcase cover and extend to one or more arms of oil pump.

Described internal-combustion engine is provided with crankcase cover in the crankcase cavity of crankcase, on crankcase cover, form groove, be provided with in the described groove and be used for the storage liquid liquefied oil gas or other are used for the fuel tank of the compressed fuel gas of motor, described fuel tank part separate with groove and according to the moulding of moving towards of described groove.Be provided with injection tube in the admission line between vaporizer and crankcase cavity.Crankcase cover covers the crankcase cavity, and a corresponding adaptive oily tower is used to store liquefied petroleum gas (LPG) or other are used for other gaseous fuels of motor, described oily tower section structure is arranged at the groove of crankcase cover, part separate with groove and according to the moulding of moving towards of described groove.

The invention has the advantages that:

Above-mentioned a kind of novel single cylinder and have the motor of novel single cylinder, the method for a kind of advanced person's manufacturing cylinder and assembling four stroke engine especially is fit to be applied to four stroke engine (also being applicable to the two-cycle engine cylinder).Partly bent and complete bent separate cylinders crankcase module is beneficial to the saving cost in manufacturing and equipment process, the simple crankcase that is used for dried shell-type lubricating fitting also can be used as dried shell-type motor or aerosol lubricating fitting, when being in each placement location, the portable product of therefore, producing all can move.

This low cost, simple four stroke engine especially are fit to be applied to portable lawn and garden furniture, for example trimmer, blower, chain saw, tiller, mowing machine, compressor motor, dynamo engine etc.Assembling the method for single cylinder simplifies greatly.

Traditional four stroke engine has camshaft and reduction gear, and the rotating speed of controlling nose of cam is the Half Speed of arbor running, and the operation of Aspirating valves and outlet valve once when arbor takes two turns.

But in single-shaft engine, nose of cam can be one-body molded with counterweight, also can be used as an independent sector and be installed between the bearing support on the arbor in the cavity.Single cylinder engine has reduced number of components and parts, and especially half crank-axle engine is with respect to the integral shaft motor, and its assembly method is simplified greatly.Further, disclosed motor also can be applied to complete crank-axle engine among the present invention, and outside main bearing and inside main bearing are cast as a part, needs a new assembly method like this.

Some four stroke engine especially in the motor of ejector sleeve formula air valve system, are provided with aerating system and are used to discharge the unnecessary gas that camshaft spills, and in this case, camshaft is parallel to arbor and is installed between cylinder head and the arbor.Breather line is arranged in the camshaft, and camshaft can fixedly mount herein, and cam wheel and nose of cam pivot.Further, a breather line (replacing the breather line in the arbor) that connects cavity and external environment can be set in the arbor.

When the petroleum gas fuel tower was attached to crankcase cover, the succinct single cylinder design that is used for L type hair motivation can be brought into play considerable advantage.

Description of drawings

For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation.

Fig. 1 is the schematic representation with half Qu Danyi cylinder four stroke engine of ejector sleeve valve train, and cam chamber bottom wherein is plugged.

Fig. 1 b is the schematic representation of the single cylinder of motor shown in Fig. 1, wherein, cylinder block, crankcase, cylinder head, outer bearing carrier and inner pedestal are one-body molded.

Fig. 1 c is the front view of motor shown in Fig. 1.

Fig. 1 d is the plan view of motor shown in Fig. 1.

Fig. 2 is the front view of motor shown in Fig. 1.

Fig. 3 is the enlarged view with cam chamber front view of breather line, and wherein, breather line is located in the camshaft of motor as shown in Figure 1.

Fig. 4 is second embodiment's of half Qu Danyi cylinder four stroke engine a schematic representation, motor wherein, and the cam chamber bottom is opened to the valve train that pushes, and cam chamber is connected by pipeline with the crankcase cavity.

Fig. 5 is the 3rd embodiment's of half Qu Danyi cylinder four stroke engine a schematic representation, wherein, has the gasification room of premixing lubricant oil and air fuel.

Fig. 5 b is half another embodiment's of Qu Danyi cylinder four stroke engine a schematic representation, wherein, has the camshaft that driven by oil pump.

Fig. 6 is half another embodiment's of Qu Danyi cylinder four stroke engine a schematic representation, wherein, is provided with nose of cam between the interior outer bearing carrier.

Fig. 7 is single another embodiment's of cylinder four stroke engine a schematic representation, wherein has a complete bent axle and independent cylinder body to support whole arbor.

Fig. 8 is the schematic representation that the arbor outside is pressed into counterweight in the motor of Fig. 1.

Fig. 9 is the schematic representation that the engine spindle of Fig. 7 is pressed into counterweight.

Fig. 9 b is the schematic representation that the crankcase bottom of motor is provided with fuel tank among Fig. 9.

Fig. 9 bb is in the motor of Fig. 7, and one-body molded have cylinder block, crankcase, a schematic representation of the single cylinder of cylinder head and bearing.

Fig. 9 c be half Qu Danyi cylinder four stroke engine and with the schematic representation of the part outer bearing carrier of the integrated casting of cylinder block.

Figure 10 is the schematic representation that is provided with the single cylinder four stroke engine of independent fuel tank, and a flinger ring that is attached to arbor is wherein arranged.

Figure 11 is the schematic representation of cam chamber front portion.

Figure 11 b is the schematic representation that is provided with the single cylinder four stroke engine of camb cap and whole ignition module seat.

Figure 12 is another embodiment's of single cylinder four stroke engine a schematic representation, wherein is provided with a belt-type drive top set cam, a fuel tank and a flinger ring.

Figure 12 b is another embodiment's of single cylinder four stroke engine a schematic representation, wherein is provided with a belt-type drive top set cam and the oil pump that arbor drives.

Figure 13 is the schematic representation of half bent embodiment of single cylinder four stroke engine among Fig. 9.

Figure 13 b is the schematic representation after embodiment's turned upside down among Figure 13.

Figure 13 c is the schematic representation of embodiment after side-inverted among Figure 13.

Figure 14 is the schematic representation with half Qu Danyi cylinder four stroke engine of L-type head and valve train.

Figure 14 b is the schematic representation of single cylinder among Figure 14, single cylinder and cylinder block, and crankcase, cylinder head, outer bearing carrier and inner pedestal are one-body molded.

Figure 14 c is the schematic representation of single another embodiment of cylinder among Figure 14, single cylinder and cylinder block, and crankcase, cylinder head, outer bearing carrier, the valve body of inner pedestal and cylinder seat inwall is one-body molded.

Figure 14 d is an engine structure and to the schematic representation of pipeline oiling, and this embodiment's motor has branch's gas handling system, is provided with one-way valve in the admission line wherein.

Figure 14 e is the schematic representation after motor amplifies among Figure 14 d, has showed the separation situation of gas handling system.

Figure 14 f is the schematic representation with four stroke engine of L type head and valve train, and liquefied petroleum gas tank wherein is positioned at the valve train bottom.

The 1-motor, the 2-valve mechanism, the 3-cam chamber, 4-ejector sleeve valve mechanism bottom, 10-half bent axle cylinder, the 20-cylinder block, 12-cylinder block cavity, the 21a-outer bearing carrier, the 21b-inner pedestal, the 22-arbor, the 25-external frame, the 28-outer bearing, the 29-flywheel, the 30-crankcase, the 32-counterweight, the 34-groove, the 3440-cylinder head, the 40b-spark plug, the 41-inner bearing, 48-crankcase chamber, the 51-firing chamber, the 82-camshaft, top, 86-porthole chamber, bottom, 87-porthole chamber, 88e-ejector sleeve pipeline, 88-opens valve formula porthole chamber, 89-crankcase outer wall, 90-crankcase inwall, 88a-porthole chamber under shed, the 98-suction valve, the 106-valve chamber, the 182-cam wheel, 108-nose of cam 288-follower, 300-ejector sleeve 300, the 122-crankshaft gear, 1288e-belt transmission pipeline, the 500-vaporizing chamber, the 184-pipeline, the 126a-admission line, the 600-motor, the 608-nose of cam, the pipeline of 609-nose of cam, the 688-cavity, the 808-oil duct, the 102a-rocking bar, 89a-lid 89a, the 299-nut, the 999-safety check, the full curly hair motivation of 700-, the 731-outer bearing carrier, 730-crankcase outer wall extension, 722-arbor inside, the outside 723a-clutch shaft bearing of 722b-arbor chamber, the 723b-second bearing bore 723c-the 3rd bearing bore, 733b-outer bearing chamber upper half part, 733c-outer bearing chamber lower half portion, the perforate of 83-cylinder block, 732a-first counterweight, 732b-second counterweight, the 736-crankpin, the 734-connecting rod, the 756-piston assembly, the total plunger of 758-, the 760-wrist pin, the 928a-first oil sealing 928b-the 3rd oil sealing, the 948b-fuel tank, the 944b-crankcase cover, 964-crankcase cover groove, the 934-flinger ring, the 966-division wall, the 952-exhaust duct, the 1048a-fuel tank, 1089a-fuel tank bottom 723d-inner pedestal inwall, 1088-porthole chamber, bottom, 1088a-porthole chamber, 1190-independent cam lid, igniter seat in the 1013-, the outer igniter seat of 1012-.The 1200-motor, 1282-cam pulley, 1284-timing line belt, the 1222-arbor, the 1286-crankshaft roller, the 1248b-fuel tank, the 1288-individual cavity, the 1234b-flinger ring, the 1210-cylinder block, the 102b-follower, the 102a-rocking bar, 1208-top cam, 1505-lubricant oil syringe pump, the 1502-worm gear, the 1503-gear, the 1507-inlet, the 1513-pressure transducer, the 1509-outlet, the 102b-follower, the 102a-rocking bar, the 1513-pressure transducer, the 1509-outlet, 1320-flinger ring pipe, the 1312-crankcase cover, the 1348-oil tank wall, the deep of 1318-flinger ring 1344-oil tank wall 1318b-flinger ring, the 12a-cylinder wall, the 1324-bracket tube, the 1328-oil transportation channel, the 1348-oil sump, the 1352-part, the 1314-groove walls, the 1316-groove, the 1190-camb cap

The 1400-motor, 1440-L type head, the 4002-inlet valve seat, 4024-suction valve conduit, the 4026-exhaust valve guide, the 1408-spring for valve, the 1409-spring plate for valve, the 584-air valve, 584a-first valve, 584b-second valve, 2007-LP gas fuel case, 44b-crankcase cover part charge, 2007a-fuel tank center line, 2927-arbor axis, the 2907-framework, the 2907a-leg, the 1505-filling pump, the 1511-gear train, the 1513-pressure transducer, the 1509-outlet, the 2010a-utensil, the 2010b-utensil, the special utensil of 2020a-, the special utensil of 2020b-.

Embodiment

Fig. 1,1b, the embodiment among 1c and the 1d is the motor of the single cylinder of one and half bent four-strokes, comprises the cam chamber 3 of bolt on an ejector sleeve valve mechanism 2 and the bottom 4.Motor 1 comprises one and half bent axle cylinders 10 and the cylinder block 20 that longitudinal extension is provided with, and described 20 weeks of cylinder block are provided with around cylinder block cavity 12, comprise crankcase 30 and cylinder head 40 again, and are all one-body molded with cylinder as Fig. 1 b said apparatus.Crankcase 30 comprises integrated crankcase outer wall 89 and crankcase inwall 90, and they are all one-body molded with cylinder.Crankcase 30 comprises outer bearing carrier 21a and inner pedestal 21b, is arranged at the arbor 22 that is used for supporting respectively half on crankcase outer wall 89 and the inwall 90 respectively.Inner pedestal 21b supports the inner bearing 21b near counterweight 32, and described counterweight 32 is installed on the inboard of inner bearing 41.Outer bearing 28 is supported by the outer bearing carrier 21a of flywheel 29 sides on the crankcase outer wall 89, and flywheel 29 comprises the part of its external frame 25 at least.External frame 25 is separated out with cylinder block 20.Be provided with a piston assembly 756 in cylinder cavity 12, described cylinder cavity 12 comprises total plunger 758, with the connecting rod 734 that links to each other with piston 758 by wrist pin 760.Crankpin 736 is movably connected connecting rod 734 and the counterweight of being located on the arbor 22 32.In full curly hair motivation, outer oil seal can replace outer bearing.

External frame 25 also can design for following current for counter-flow designs.In the counter-flow designs, the opening on the external frame is arranged at the air-flow periphery of coming from the motor rear; In the following current design, opening is arranged on the front shell of following current body.Counter-flow designs and following current design in conjunction with the time, external frame 25 is provided with opening, same housing front portion also is provided with opening.Be provided with the valve formula of the opening porthole chamber 88 of a longitudinal extension in the cylinder 10 between outer wall 89 and cylinder block 20, under shed 88a is located at 87 places, lower end in porthole chamber 88, described porthole chamber 88 is closed by chamber lid 89a, and if necessary, under shed 88a also can open crankcase chamber 48.External frame 25 is extended from outer wall 89 and is provided with, and the part-structure at least of framework and outer wall 89 are one-body molded.88 tops 86, porthole chamber near cylinder head 40 are open, thereby make valve train 2 from arbor 22 action be passed to suction valve 98 and outlet valve (not marking) herein, and described outlet valve is located at the rear of described suction valve 98.

Suction valve 98 and outlet valve all are arranged in the valve chamber 106, and the spark plug 40b that is installed on the cylinder head 40 stretches in the firing chamber 51, defines upper half part of firing chamber with this.Valve train 2 comprises cam wheel 182, nose of cam 108, follower 288 and ejector sleeve 300 (perhaps being called push rod).Crankshaft gear 122 and the cam wheel 182 with follower 288 are arranged in the porthole chamber 88, and described porthole chamber 88 is formed in one, and therefore form a groove 34 at least between the outer bearing carrier 21a of 88 lower ends, porthole chamber and inner pedestal 21b.Groove 34 among Fig. 1 and the 1b is as the bottom 87 in porthole chamber 88.

Slide plate coring in the 88 usefulness casting tools of porthole chamber becomes hollow, and ejector sleeve 300 is arranged in one or more transmission pipelines, for example the ejector sleeve pipeline 88e in the porthole chamber 88.The transmission pipeline also can be the belt transmission pipeline 1288e among Figure 12.Also part ejector sleeve pipeline 88e in the porthole chamber and/or belt transmission pipeline 1288e can be become hollow with porthole chamber 88 corings.Therefore, cylinder 10 allows porthole chamber 88 or belt transmission pipeline 1288e to begin into part hollow from crankcase chamber 48, obtains a single cylinder body, does not need other optional feature or machining.

88 tops 86, porthole chamber can be open to overhead valve chamber 106 by integrated ejector sleeve pipeline 88e; Perhaps as shown in figure 12, open to the dry type conveyer mechanism, perhaps to open to the pipeline of wet type conveyer mechanism, described wet type conveyer mechanism is used for by cam wheel or pulley drive top camshaft.

Fig. 4,5 and 5b in embodiment in, motor 1 comprises a self-contained continuous porthole chamber 88, extends setting herein between crankcase chamber 48 and top set valve chamber 106 (if belt drives, be the top set cam chamber).Porthole chamber 88 be one from crankcase chamber 48 to valve chamber 106 independent continuous passage, described porthole chamber does not have the dense capping of the pipeline that is used for seal for pipe joints, independently ejector sleeve pipeline 88e and other optional feature.Fig. 5 has shown gaseous fuel mixture under the control of vaporizing chamber 500, the process that the opening 84 of process cylinder block 20 enters crankcase chamber 48.Functional similarity in the function of piston intake system and the common two-cycle engine.But mixed base grease is to enter crankcase chamber 48 and flow into firing chamber 51 by suction valve 98.Gas handling system is similar to a lot of standard gas handling systems, for example leaf valve system and rotary valve system.When INO, mixture enters porthole chamber 88, enters valve chamber 106 by opening 88a from crankcase chamber 48, and enters firing chamber 51 through the pipeline 184 between valve chamber and the firing chamber 51.

Among Fig. 5 b, described camshaft 82 is driven by filling pump 1505, is used for lubricant oil is injected admission line 126a or crankcase chamber 48.Filling pump 1505 links together with camshaft by connection set or gear train 1511.Filling pump can open and close motor by 1513 pairs of pressure transducers, promptly when outlet 1509 oil pressure is lower than reference value, thereby motor by flame-out prevent out of control.

Among the embodiment of Fig. 6, motor 600 structurally with Fig. 1 in motor 1 similar, just the motor 600 in the present embodiment also comprises the nose of cam 608 that is installed on the camshaft and the pipeline 609 of nose of cam, and the technology in this and the U. S. Patent 7000581 is similar.The 26S Proteasome Structure and Function and the prior art of motor 600 are similar.Then, illustrated between interior

outer bearing carrier

21b and 21a the concrete mounting point of nose of cam 608 among Fig. 6.As shown in Figure 6, motor 600 has an ejector sleeve formula valve train.Porthole chamber 88 is similar in cavity 688 and the motor 1, can open to the crankcase chamber as shown in Figure 5 in the lower end in porthole chamber 88 described in the described porthole chamber, also can be in closed condition as shown in Figure 1.Ejector sleeve 300 is located in the porthole chamber 688, and flexibly connects and engages with the pipeline 609 of nose of cam, and described nose of cam 608 is installed on half arbor 22 between the interior

outer bearing

41,28.

Illustrated among Fig. 3 to comprise a camshaft 82 and a cam wheel 192 by a cam pack 182a.Aerating system comprises that breather line 910 is connected breathing pipe 911 by camshaft 82 with perforate 913 places to engine interior, thereby the pressure that produces owing to air blowing in the crankcase chamber is discharged.The technology of breather line 910 and function thereof and U. S. Patent 6502565 is similar.

Come the ejector sleeve valve train is lubricated by oil duct 808 is set, described oil duct 808 is then and leads to porthole chamber 88 radially through being positioned at the axial arbor center of crankcase 58.With U. S. Patent 6,039, disclosed oil duct difference in 020 and 6,047,678, its purpose are to inject less amount of lubrication oil to porthole chamber 88 from the crankcase chamber, thereby correspondingly valve train 2 are lubricated.Close under shed 88a, an oil sealing is set or inner bearing 41 is stuffing box bearings at inner pedestal 21b, the sealing bearing can stop that lubricant oil flows directly into porthole chamber 88 from the crankcase chamber.

The a spot of lubricant oil that arrives cam wheel 182 and crankshaft gear 122 is come by sprinkling, is beneficial to suction valve 98 and rocking bar 102a are lubricated.Lubricant oil returns crankcase chamber 48 through the safety check on the lid 89a 999 after being compressed in porthole chamber 88, and when piston assembly 756 moved up, crankcase pressure reduced, and lid 89a is unlocked.The valve body of other types also can be applied to this, and opening 88a can have a lot of purposes, such as, as above-mentioned design, a safety check is set, be used to stop lubricant oil to turn back to crankcase chamber 48 from porthole chamber 88; Oil pump as shown in Figure 12 c also can be set in addition, perhaps between porthole chamber 88 and crankcase chamber 48, rotary valve be set, perhaps when adopting independent oil conservator, be provided for providing or reclaiming the rotation safety check of lubricant oil.In traditional motor, lubricant oil is collected by individual cavity through the part that breather line flows out, and turns back to the crankcase chamber by safety check then.Process arbor oil duct 808 disclosed herein, because inlet 808a is higher than pasta all the time, therefore, no matter motor is placed with any position, can prevent that all lubricant oil from flowing into porthole chamber 88, thereby prevent that it from finally entering vent valve or valve chamber 106.

Full curly hair motivation 700 as shown in Fig. 7-9, close with motor 1 structure shown in Fig. 1-3, full curly hair motivation 700 comprises an outer bearing carrier 731, is arranged on the crankcase outer wall extension 730 of cylinder block 20.Crankcase 30 comprises integrated crankcase outer wall 89 and crankcase inwall 90, and Liang Bishang forms the clutch shaft bearing chamber 723a and the second bearing bore 723b, and is all one-body molded with cylinder block 20.The clutch shaft bearing chamber 723a and the second bearing bore 723b and outer bearing carrier 731 support whole arbor 722, and described arbor comprises inner 722a of the arbor of arbor and the outside 722b of arbor.In the common full curly hair motivation of major part, crankcase is divided into two-part, can vertically with the center line of cylinder block cavity 12 separate, perhaps as U. S. Patent 6,439, in 215 with an angle, or in 6,250,273, separate along the arbor axis horizontal, perhaps as U. S. Patent 6,332,440,6,021,766 and 5, vertically separate along the arbor axis in 947,075.The shortcoming of these prior aries is that two-part of crankcase must be assembled into an integral body earlier, thereby come the machine shaping bearing bore, and then separately carry out final assembling.Especially, song

Two-part of axle box exist for pairing.Embodiment's motor 700 shown in Fig. 7-9 has a separate cylinders body 20 and is used to support whole arbor 722.Clutch shaft bearing chamber 723a, the second bearing bore 723b and the 3rd bearing bore 723c can be by coaxial while machine shapings, each other and all perpendicular to cylinder cavity 12, and have better quality control.The alignment of the front and rear part of bearing is desirable more.Perhaps, upper half part 733b and the cylinder block 20 of outer bearing chamber 733a are one-body molded, and its lower half portion 733c shown in Fig. 9 c as the part of crankcase cover 744.

The inner 722a of arbor is different with conventional art with the assembly method of the outside 722b of arbor, has described a kind of camshaft 8 that is equipped with among Fig. 1 and Fig. 3, and the method for cam wheel 182 and follower 288 comprises by a perforate camshaft 82 is pressed into cylinder block 20; After camshaft 82 was pressed into, camshaft 82 can rotate freely in the perforate 83 of cylinder block 20.In addition, described camshaft 82 has one and gets involved part, and described intervention part is located in the described perforate 83 of described cylinder block 20, and described cam wheel 182 and described protuberance 108 at camshaft around rotation.

Optionally, camshaft 82 can with perforate 83 interference fit on the cylinder block 20, cam wheel 182 and protuberance 108 can rotate around camshaft.A kind of method of assembling full curly hair motivation 700 and bearing support integrated with it comprises, assembles the first counterweight 732a and the second counterweight 732b, passes the crankpin 736 that the first counterweight 732a and the second counterweight 732b and connecting rod 734 are installed.The deflector coil of the starter second counterweight 732b is one in the complete bent embodiment of simulation outside.The installation steps of counterweight assembly comprise the wrist pin of installing by the connecting rod 734 of piston assembly 756 and piston assembly 756 760.Yet, also can after installing arbor, piston assembly 756 and connecting rod 734 be fitted together separably.Then as the motor of Briggs and Stratton, wrist pin 760 is inserted in the perforate on the cylinder block 20.Perhaps, the embodiment in the image pattern 11 is the same, and 88 inside, described porthole chamber are located in described cylinder block 20 the above perforate 760, are used to accept the insertion of described wrist pin 760.

As shown in Figure 7, the step 1 of assembling arbor 722 comprises, inner bearing 741 is pressed into bearing support 721b, and piston assembly 756 and connecting rod 734 are inserted in the cylinder block cavity 12.Then, with the first counterweight 732a and the second counterweight 732b and

bearing support

723a, 723b, the aligned in position of 723c.

As shown in Figure 8, assembling arbor 722 steps 2 comprise that when counterweight 732b was supported by utensil 2010a and utensil 2010b, outside 722b was pressed among the counterweight 732b with arbor.Described utensil 2010a passes from inner bearing 741.

As shown in Figure 9, step 3 comprises, supports the outside 722b of arbor with special utensil 2020a, and wherein, described special utensil passes and be enclosed within the outside 722b of described arbor outward, and passes the bearing bore 723c of outer bearing carrier 733a; Support the first trunnion shaft 732a with special utensil 2020b, then the inner 722a of arbor is pressed in the counterweight 32.

As shown in Figure 9, step 4 comprises, the first oil sealing 928a and the 3rd oil sealing 928b are pressed into respectively among clutch shaft bearing chamber 723a and the 3rd bearing bore 723c.

Step 5 comprises inserts outer bearing 731 (bearing that perhaps is used for outer starter) and oil sealing 728b.Outer bearing can slidable fit to the outside 722b of arbor, also can fix with circlip.

It should be noted that needs according to lubrication system and aerating system, when using oil sealing, need with bearing

support

21a, 21b, the arbitrary bearing on 731 carries out combination.

As Fig. 9 and 9b, the outside 722b of arbor to be installed in half crankcase of starter outside being equipped with to want simple many, this is because deflector coil does not have to be pressed into crankpin 736 solidly.In this case, it is one-body molded that outer bearing carrier is upper half part and cylinder block, and lower half portion is the part (shown in Fig. 9 c) as crankcase cover 744.But as Fig. 9 c, the outer rim of bearing support 735 is still one-body molded with cylinder block.More than design helps improving the sealing between crankcase cover 744 and the cylinder 10.

Shown in Fig. 9 b, the motor that assembles is provided with an independent fuel tank 948b, and described fuel tank 948b invests the bottom of crankcase cover 944b, forms groove 964 on the crankcase cover and is used to install the splash that the flinger ring 934b that is located at described connecting rod 934 realizes oil.It should be noted that in the time of the motor turned upside down because the existence of division wall 966, lubricant oil can not flow into crankcase chamber 948a.Yet exhaust duct 952 makes a spot of lubricant oil enter the first and second counterweight 932a, and 932b makes the piston assembly 756 can be lubricated, and a part of lubricant oil enters into the 88 pairs of valve trains in porthole chamber and is lubricated.The opening of the exhaust duct 952 of counterweight 932a can be carried out regularly design; When piston assembly 756 moves up, cause crankcase chamber 948a internal negative pressure, open thereby open exhaust duct 952, when piston assembly 756 moves down, cause crankcase chamber 948a internal positive pressure, thereby close exhaust duct 952.Be compressed in that lubricant oil can turn back to crankcase chamber 948a or directly turn back to independent fuel tank 948b through the safety check 999 shown in Fig. 9 b in porthole chamber 88 and the valve chamber 106.Especially, be in the motor turned upside down, also lubricant oil can be entered fuel tank from valve chamber 106 by other Returning pipes and safety check.

Motor shown in Figure 10, fuel tank 1048b can be to have to be similar to Toyota's U. S. Patent 5,947,075 and 6,021, the individual cavity of disclosed dried shell-type lubrication system in 766.Have following shortcoming in the design of Toyota, crankcase is made up of two independent sectors, and after assembling, two-part must be processed simultaneously, and therefore, production cost is higher.Two patent disclosures of Toyota be full curly hair motivation, and disclosed herein is half curly hair motivation.As shown in figure 10, fuel tank 1048a can casting, thereby makes that chamber is the part of cylinder block 1000.Casting, processing and assembling all can become more simple.The fuel tank bottom is provided with lid 1089a.

Among Figure 11 and Figure 11 b, the second bearing bore 723b (inner bearing chamber) leads to the inwall 723d of inner pedestal 723e always.With surplus material 1011 machine shaping porthole chambeies 1088.In the present embodiment, the bottom 1088a in porthole chamber 1088 closes, and therefore there is no need to be provided with any type of stopper.Yet the front in porthole chamber 1088 need be from being used to install camshaft 82, and the front portion of the follower 288 of cam wheel 182 and follower peg 198 begins its coring is become hollow.And this just needs an independent cam lid 1190 as shown in Figure 11 b.Figure 11 b has represented that how the front portion in porthole chamber 88 seals with independent cam lid 1190, and the bearing of camshaft 82 and follower peg 298 are how to be installed on the camb cap 1190.The inside and outside igniter seat 1013 and 1012 (meaning not shown in the figures) that is used to install ignition module provides voltage for igniting.In addition, outer igniter seat 1012 is formed in one with cylinder block 20.

Among the embodiment among Figure 12 and the 12b, motor 1200 has the wet type transmission device, and this point is similar to Toyota previous disclosed technology.An overhead cam pulley 1282 is driven by timing line belt 1284 and the crankshaft roller 1286 that is installed on the arbor 1222 when motor is in the Half Speed state.Crankshaft roller 1286 can be arranged in next-door neighbour's the individual cavity 1288 of fuel tank 1248b, is provided with oil sealing between fuel tank 1248 and individual cavity 1288, and perhaps valve train and fuel tank 1288,1248b are to be drawn by portion the end of since and are hollow.A plurality of flinger ring 1234b are installed on the arbor 1222.Line belt passage 1288e begins to be drawn from the top of cylinder block 1210 and bottom and is hollow.As shown in figure 12 follower 102b and rocking bar 102a have formed valve train.Yet the technology of handling suction valve 98 and outlet valve 99 by top cam 1208 is by as everyone knows.Shown in Figure 12 b, lubricant oil syringe pump 1505 is located at cylinder block 20, and driven by arbor 1222 by worm gear 1502 and gear 1503.As shown in Fig. 5 b, this lubricant oil syringe pump also can be driven by crankshaft gear 122 by reduction gear, pump 1505 has an inlet 1507 that is used to receive from the oil of oil conservator, with an outlet that is used for that oil is sent to shown in Figure 14 d first admission line 126a or sends into crankcase chamber 48. as described in the lubricant oil syringe pump control by pressure transducer 1513, when the oil pressure at outlet 1509 places was lower than reference value, motor was by flame-out.Gaseous fuel mixture can enter crankcase chamber 48 through the opening 84 on the cylinder block 20 under the control of vaporizer 500.

Figure 13 and 13b be among Fig. 9 b in the another kind of mode of execution of half curly hair motivation, when motor 1200 up and down or when reversed left to right, it can prevent that lubricant oil 1240 from entering cylinder head 40.Flinger ring pipe 1320 is from crankcase cover 1312 extend into fuel tank between crankcase cover 1312 and oil tank wall 1348, flinger ring 1318 is done straight reciprocating motion in described flinger ring pipe 1320, described oil tank wall 1344 separates crankcase chamber 48 and described fuel tank 1348.The deep 1318b of described flinger ring has shown the past renaturation that extend into described pipeline 1320.When the flinger ring 1318 of connecting rod ring moved, the oil in the oil pump was splashed into crankcase chamber 48 the insides, thereby oil spatters on cylinder wall 12a and moving element, had realized the lubricated of parts.Oil droplet (or mist of oil) also can lubricate valve train, and described valve train comprises cam 108, cam wheel 182, miscellaneous parts such as follower 288 and rocking bar.Oil droplet or mist of oil can enter cam chamber 88 and valve chamber 106 through the bearing pipeline 1341 in pipeline 808a in the arbor or the inner bearing 41.When motor 1300 was vertically placed, pasta 1334 as shown in figure 13.Shown in Figure 13 b, when about motor or during turned upside down, oil in the oil sump does not overflow and enters in the float chamber chamber of cylinder chamber, enters the crankcase chamber through the oil transportation channel 1328 in the bracket tube 1324 on the contrary, and described bracket tube 1324 extends in the oil sump 1348 from crankcase cover 1312.Can make motor lubricated by a plurality of saddles are set at different placement locations.Part 1352 also can be provided with other like parts and promote oil to spray to crankcase chamber 48 for being located at the flexuose projection on flinger ring or the sample spoon.The oil supply pipeline that leads to cylinder head is arranged in the crankcase chamber, and therefore, unnecessary oil can not enter in the cylinder head.Optionally, flinger ring 1318 is arranged in the groove 1316 of oil sump 1348, and described oil sump 1318 is arranged between crankcase cover 1312 and the groove 1316, and described groove walls 1314 is separated crankcase chamber 48 and oil sump 1348, as shown in figure 13.The front portion in porthole chamber 88 is closed by camb cap 1190, and camshaft 82 one of them bearing support and follower 298 are arranged on the camb cap 1190.Inside and outside igniter seat 1013 and 1012 is used to install the ignition module (not shown) provides ignition voltage.Outer igniter seat 1012 is integrated on the described cylinder block 10.

As Figure 14,14b, 14c, 14d, shown in 14e and the 14f, motor 1400 has the cylinder block seat, and described cylinder block seat comprises cylinder block 20, L type head 1440 and crankcase 30, three in one moulding.Cylinder block 20 inside form cylinder cavity 12, form porthole chamber 88 between cylinder block 20 and the crankcase outer wall 89, and described crankcase outer wall is one-body molded as a part and the cylinder block 20 of cylinder 10.Integrated cylinder shown in Figure 14 b.Wherein, L type head 1440 covers porthole chamber 88, and gas cavity 12 is separated by inwall 90 in cylinder block 20.L type head valve chamber 107 in the porthole chamber 88, porthole chamber 88 and crankcase chamber 48 interconnect by pipeline, and be arranged at 52 in cylinder block and pipeline, wherein, described cylinder block is located at 88 bottoms, porthole chamber, and described pipeline 52 is located at the top of contiguous firing chamber 51.Porthole chamber 88 and valve chamber 107 are arranged in a linear, the axis of valve chamber 107 and cylinder block point-blank, also the cylinder block axis tilt is at angle relatively.

L type head valve chamber 107 comprises suction valve assembly 120 that is used for air inlet and the exhaust valve component 120b that is used for exhaust, also comprises inlet valve seat 4002, is used for the suction valve conduit 4024 and the exhaust valve guide 4026 that is used for exhaust of air inlet.Valve chamber 107 also comprises spring for valve 1408 and spring plate for valve 1409, and described valve chamber 107 closely links to each other with cylinder 10 in the valve chamber 107 between porthole chamber 88 and firing chamber 51, and having formed one does not have the firing chamber of leakage.Before will being installed to cylinder 10, can be earlier with valve seat 4002, valve guide 4024, spring for valve 1408 and valve seat 1409 are assembled into a valve module.The valve clearance is regulated by nut 299.Air-valve assembly 120 is provided with opening 124, communicates with surrounding environment by the suction port 126 that links to each other with vaporizer 500 (gaseous fuel mixing chamber).Air-valve assembly 120 has an opening 124 that connects gasification room 500 and crankcase chamber 48, and gaseous fuel mixes in the crankcase chamber with lubricant oil.Pipeline 502 links together gasification room 500 and crankcase chamber 48 by the connecting tube 127 in the suction valve assembly 120.One-way valve 128 as shown in Figure 14 c can be set in pipeline 502, when piston moves down, be used to stop fuel oil to reflux from gasification room.

Motor 1400 in another embodiment, has the single cylinder of integrated L type head shown in Figure 14 d and 14e, suction valve device 120 comprises independent admission line 126, described admission line 126 has the first admission line 126a and the second admission line 126b, the first admission line 126a directly links to each other described gasification room 500 with cylinder block cavity 12 (firing chamber 51) with the second admission line 126b when aspirating stroke, and by the connecting tube 127 that passes suction valve assembly 120 gasification room 500 is directly linked to each other with crankcase chamber 48 when the upstroke of exhaust or compression stroke.Partition wall 4008 crosses in admission line and is used to separate from gasification room 500 to suction valve the air-flow 98, crosses to be used to minimize two kinds of mixtures to enter circuit before the cylinder block cavity 12 in pipeline.Piston upwards or when moved firing chamber 51,25% in the fluid to 75% part flowed into crankcase chamber 48 through the first admission line 126a (perhaps by unillustrated independent passage among the figure) when compression or exhaust stroke.When aspirating stroke, suction valve 98 is opened, independent inlet channels 126a, and 126b is connected to cylinder block cavity 12 from gasification room 500.The oil plant that is pre-mixed flows into crankcase chamber 58 and is used for the lubricating engine part, especially valve train and crankcase chamber 48.When fuel is not pre-mixed with lubricant oil, also can lubricant oil be injected first gas-entered passageway 126a and the second gas-entered passageway 126b separately with injector or injection tube 101.In these cases, unnecessary oil plant enters firing chamber 51, the oil inlet quantity that mixed oil plant (can be oil and AIR MIXTURES) enters crankcase chamber 48. oil plants is controlled by the air valve 584 of vaporizer, and the first valve 584a and the second valve 584b can be separated, thereby control the flow that flows into the first admission line 126a and the second admission line 126b.When oil plant is injected into pipeline 126a, have only air to be introduced among the pipeline 126a.

In fact, when oil plant is injected into the air-flow lubricating component, independent suction port 126 can only allow air enter crankcase chamber 48 by pipeline 126a, perhaps when low density mixture flow in pipes 126a, allow air-fuel mixture enter crankcase chamber 48 by pipeline 126a, and a large amount of mixture flow is through described pipeline 126b, and the mixture flow that perhaps has unified gas-oil ratio is through pipeline 126a and 126b.Simultaneously, when having only air stream through pipeline 126a, the fuel of the pipeline 126b that flows through that is supplied with can be propane fuel or gaseous fuel, for example compressed natural gas, biological flue gas etc.Fuel oil is injected in the middle of the air that is introduced in the crankcase chamber, and its advantage is: can directly enter the firing chamber as liquid fuels such as the gaseous fuel of propane or gasoline when the aspirating stroke; And in crankcase chamber 48, do not contain in the dried shell-type engine system of oil plant, being injected into airborne fuel oil is lubricated valve train, described valve train comprises cam wheel, crankshaft gear, corresponding accessory, valve, nose of cam etc., and also the bearing in the crankcase chamber 48 is lubricated simultaneously.

The another one advantage is, when the motor turned upside down, owing to the oil plant that can not flow into cylinder in the crankcase chamber, so motor can be worked under each placement location.In DIS Dual Induction System, suction port 126 is divided into two independently

pipeline

126a, and 126b is applied to described top valve chamber 107.Connect valve chamber 107 by pipeline 126a, when injecting the oil plant that is used for lubricated valve and crankcase chamber 48 parts, have only air can enter valve chamber 107 and crankcase chamber 48.

In the compression stroke, piston assembly 756 moves up, and closes suction valve 98, make to form malleation in the crankcase chamber 48, oil plant from gasification room through piping 126a, opening 126, chamber 88 is injected in the crankcase chamber 48.One-way valve 128 meetings are because of the unlatching of the pressure difference (especially spring valve) of one-way valve.In power stroke and expansion stroke process, piston moves down, and crankcase pressure obtains balance.In aspirating stroke, suction valve 98 is opened, and oil plant flow into firing chamber 51 from crankcase chamber 48.Simultaneously, unnecessary oil plant directly enters firing chamber 51 from gasification room 500 through piping 126b.The notion of twin flue (oil plant of low density flows into crankcase chamber 48, and unnecessary oil plant directly enters the firing chamber) is applicable to described single cylinder engine.

Oil pump is driven by arbor 22 shown in Figure 12 b, and perhaps oil pump is driven by camshaft 82 shown in Fig. 5 b, and perhaps shown in Fig. 9 b (Fig. 9), the oil pump that is installed on the outer wall also can be driven by part arbor 722b.Employed fuel oil can be a propane gas in the oil plant of motor, also can be common liquefied petroleum gas (LPG) or compressed gas.

Shown in Figure 14 f, curvature is the close crankcase covers 44 in LP gas fuel case 2007 its mounting points of radius R 1.Form groove on the part charge 44b of described crankcase cover 44.The radius of curvature of described groove is than radius R 1 big several millimeters (from 2 to 20mm), thereby closely cooperates with LP gas fuel case 2007 outer walls that are in crankcase cover 44 part charge 44b places.Thereby crankcase cover 44 radius of curvature realize freely rotating for connecting rod 134 and 736 of crankpins provide enough spaces.Secondly, the center line 2007a of fuel tank 2007 is lower than the axis 2927 of arbor 22, and shown in Figure 14 f, when fuel tank 2007 was installed on the motor bottom, center line 2007a had certain deviation with respect to cylinder cavity 12.When the position of cylinder block 20 is a crankcase chamber 48 when being on the center line 2007a of arbor 22, fuel tank 2007 is set at the top of crankcase cover 44.The liquefied petroleum gas (LPG) casing vertically is provided with, and is consistent with axis 2927 directions of cylinder 12.Its advantage volume is less.Similarly, the lubricant oil oil plant case that is used for motor is lubricated is housed invests fuel tank, and be positioned on the center line 2007a of fuel tank.Fuel tank 2007 is installed on framework 2907 inside, and described framework 2907 can be attached on crankcase lid 44, cylinder block 20 or other element.When fuel tank 2007 was positioned at the bottom, framework 2907 had one and is located at the leg 2907a that the bottom is used to support motor.In order to minimize the heating equipment of fuel tank 2007, and softening buffering is set between crankcase cover 44 and fuel tank 2007, shown in Figure 14 f, between the 44b of fuel tank 2007 and crankcase cover 44, is provided with absorbing and low thermal conductance material 44c.

Shown in Figure 14 f, motor 1400 has a filling pump 1505 that is driven by camshaft 82, and filling pump 1505 also can be driven by arbor 22 by gear.Filling pump comes the oil plant injection engine inner body of lubricating engine.Liquefied petroleum gas (LPG) pressure regulator 2917 links to each other with the bottom of cylinder block 20.Fuel oil through being arranged at the fuel under high pressure pipeline 2027a at center, enters pressure governor from liquefied petroleum gas (LPG) oil plant case.

U. S. Patent 6199532 discloses a motor, and admission line wherein is not divided into independent tubes again, and fuel oil and lubricant oil is pre-mixed, and the valve chamber above the firing chamber is separated out.

The present invention is to be described by embodiment and accompanying drawing thereof, and used term is intended to describe this invention rather than limits.The description of carrying out herein, think embodiment more excellent among the present invention, other embodiments that corresponding change is arranged that mention among the present invention are conspicuous to the technician in the present technique, therefore, in the claim various embodiments of the present invention are limited.

Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms according to varying in size of equipment on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.

Claims

1. single cylinder of integrated four stroke engine, it is characterized in that: the part-structure of cylinder block (20), cylinder head (20) and crankcase (30) is one-body molded, and described crankcase (30) comprises crankcase outer wall (89) and crankcase inwall (90); At least the part-structure and the cylinder block of inner pedestal (21a) and outer bearing carrier (21b) are formed in one; Inner pedestal (21b) is located on the described crankcase inwall (90); Be provided with the open valve porthole chamber of at least one longitudinal extension between outer wall (89) and the integrated cylinder block (20).

2. single cylinder of integrated four stroke engine, it is characterized in that: cylinder block (20), cylinder head (40) and crankcase (30) part-structure are one-body molded, and described crankcase (30) comprises crankcase outer wall (89) and crankcase inwall (90); Inner pedestal (21a) and/or outer bearing carrier (21b) are cast on described crankcase outer wall (89) and the described crankcase inwall (90), and have at least a part of structure and cylinder block (20) to be formed in one; Be provided with the open valve porthole chamber (88) of at least one longitudinal extension between described crankcase outer wall (89) and the integrated cylinder block (20).

3. the single cylinder of integrated four stroke engine according to claim 2 is characterized in that: comprise that also being located at the interior one or more therefrom mind-sets in porthole chamber (88) disperses the transmission pipeline of distribution outward.

4. the single cylinder of integrated four stroke engine according to claim 3 is characterized in that: comprise also that in porthole chamber (88) the transmission pipeline (88) of dispersing distribution outside one or more therefrom mind-sets is as ejector sleeve pipeline or belt transfer canal (1288e).

5. the single cylinder of integrated four stroke engine according to claim 2 (10) is characterized in that: described cylinder seat (10) is one-body molded outer igniter seat (1012).

6. the single cylinder of integrated four stroke engine according to claim 2 (10) is characterized in that, also comprises outer bearing carrier (731), and described outer bearing carrier (731) part-structure and described cylinder (10) at least is one-body molded.

7. the single cylinder of integrated four stroke engine according to claim 6 is characterized in that: also comprise the structure as upper half part (733b) of outer bearing carrier (731).

8. the single cylinder of integrated four stroke engine according to claim 2, it is characterized in that: comprise also and the integrated crankcase inwall of engine cylinder (10) (90) that the part-structure of inner pedestal (21a) and outer bearing carrier (21b) correspondingly is installed on the outer wall (89) and inwall (90) of described crankcase.

9. the single cylinder of integrated four stroke engine according to claim 8 is characterized in that, also comprises ejector sleeve pipeline (88e) or line belt pipeline (1288e) in porthole chamber (88).

10. the single cylinder of integrated four stroke engine according to claim 8 is characterized in that, also comprises and the integrated outer igniter seat of engine cylinder (10) (1012).

11. the single cylinder of integrated four stroke engine according to claim 8 is characterized in that, also comprises the structure as upper half part (733b) of outer bearing carrier (731).

12. the single cylinder of integrated four stroke engine (10), it is characterized in that: the part-structure of cylinder block (20), cylinder head (40) and crankcase (30) is one-body molded, and described crankcase comprises crankcase outer wall (89), crankcase inwall (90) and outer wall extension (730); Outer bearing carrier (731) is arranged on the outside extension of crankcase, and clutch shaft bearing seat (723a) is arranged at described crankcase outer wall (89), and second bearing support (723b) is arranged at described crankcase inwall (90); At least be provided with an open valve porthole chamber longitudinally between described crankcase outer wall (89) and the described cylinder block (20).

13. the integrated single cylinder of four stroke engine L type head (10), it is characterized in that: cylinder block (20), L type cylinder head (1440), part crankcase (30) are one-body molded, and described crankcase comprises crankcase outer wall (89) and crankcase inwall (90); The inner pedestal (21b) that is molded over the outer bearing carrier (21a) of described crankcase outer wall (89) and/or is molded over described crankcase inwall (90) part-structure and cylinder block (20) at least is one-body molded; At least form an open valve porthole chamber longitudinally between described crankcase outer wall (89) and the described cylinder block (20); Described L type cylinder head (1440) covers porthole chamber and cylinder chamber (12) and takes shape in the cylinder block (20) and with inwall (90) and separate every setting.

14. a quartastroke engine is characterized in that: cylinder block (20), cylinder head (40) and crankcase (30) part-structure are one-body molded, and described crankcase (30) comprises crankcase outer wall (89) and crankcase inwall (90); Outer bearing carrier (21a) and inner pedestal (21b) part-structure and described cylinder block (20) at least are one-body molded; Inner pedestal (21b) is one-body molded with described crankcase inwall (90); At least be provided with one open valve porthole chamber (88) longitudinally between described crankcase outer wall (89) and the described cylinder block (20); Be provided with piston assembly (756) in the cylinder chamber (12) of described cylinder block (20); Described piston assembly (756) comprises piston (758), piston rod (734) and crank pin (758), wherein, described piston rod (734) links to each other with piston (758) by wrist pin (760), described piston rod (734) is movably connected by the counterweight (32) on described crank pin (736) and the arbor (22), described arbor (22) passes the inner bearing (41) that is installed on the inner pedestal (21b) and installs, and has at least part-structure to be subjected to the support of described inner bearing (41).

15. a quartastroke engine is characterized in that: the part-structure of cylinder block (20), cylinder head (40) and crankcase (30) is one-body molded, and described crankcase (30) comprises crankcase outer wall (89) and crankcase inwall (90); The inner pedestal (21b) that is molded over the outer bearing carrier (21a) of described crankcase outer wall (89) and/or is molded over described crankcase inwall (90) part-structure and cylinder block (20) at least is one-body molded; At least form the porthole chamber (88) of a vertical hollow between described crankcase outer wall (89) and the described cylinder block (20); Be provided with piston assembly (756) in the cylinder chamber (12) of described cylinder block (20); Described piston assembly (756) comprises piston (758), piston rod (734), described piston rod (734) links to each other with piston (758) by wrist pin (760), described piston rod (734) is movably connected by the counterweight (32) on described crank pin (736) and the arbor (22), described arbor (22) passes the inner bearing (41) that is installed on the inner pedestal (21b) and installs, and has at least part-structure supported by described inner bearing (41).

16. quartastroke engine, it is characterized in that: cylinder block (20) is one-body molded with the part-structure and the cylinder head (40) of crankcase (30), wherein, described crankcase (30) comprises crankcase outer wall and the crankcase inwall that extends from cylinder block (20) downwards, described cylinder head (40) extends downwards from cylinder block (20), inner pedestal (21a), outer bearing carrier (21b) are separately positioned on crankcase inwall and the crankcase outer wall (89), and described crankcase outer wall (89) is one-body molded with described cylinder block (20); At least be provided with one open valve porthole chamber (88) longitudinally between described crankcase outer wall (89) and the described cylinder block (20), arbor (22), one half hitch structure partly passes inner bearing (41) and outer bearing (28), and be supported at inner pedestal (21a) and described outer bearing carrier (21b) inside respectively, valve train (2) vertically passes describedly to be left valve formula steam-operating Transmission Room and flexibly connects with it, and be used for transmitting from described arbor (22) thus action Open valve (98) and throttle down (99).

17. quartastroke engine according to claim 16, it is characterized in that: also comprise the counterweight (32) on the arbor (22) of an inboard that is installed on inner bearing (41), valve train (2) comprises the ejector sleeve (300) that is arranged in the porthole chamber, passage (609) activity that described ejector sleeve (300) and nose of cam (608) form is connected, and described nose of cam (608) is installed on half arbor between inner bearing (41) and the outer bearing (28).

18. quartastroke engine according to claim 16 is characterized in that: also comprise counterweight (32), described counterweight (32) is installed on and is positioned on the inboard arbor (22) of inner bearing (41); Described valve train (2) comprises the ejector sleeve device (300) that is arranged in the middle ejector sleeve pipeline (88e) in porthole chamber (88), perhaps be arranged on porthole chamber (88) as transmission pipeline (1288e), described valve train (2) comprises and being movably installed in the described belt-type drive passage (1288e), and be located at the driving belt on the crankshaft roller (1286), wherein said crankshaft roller is located on the described arbor (22).

19. according to claim 17,18 or 19 described four stroke engine, it is characterized in that: also comprise an Injection Pump (1505) that is installed on the crankcase outer wall (89), described Injection Pump (1505) links to each other with described camshaft (82) transmission, and link to each other with the part-structure transmission of described arbor (22), and linking to each other with the first stroke pipeline (126a) is used for injecting fuel oil to the first stroke pipeline (126a), and the described first stroke pipeline (126a) directly links together the crankshaft cavity (48) of cylinder chamber (12) float chamber (30) in vaporizer (500) and the cylinder block (20).

20. four stroke engine according to claim 19, it is characterized in that: also comprise a pressure transducer (1513) that is arranged at Injection Pump (1505) upper end, when the oil pressure of Injection Pump (1505) outlet (1509) was lower than reference value, described pressure transducer (1513) can extinguish motor.

21. the quartastroke engine of a L-shape head, the four stroke engine cylinder (10) that comprises integrated L shaped head, described cylinder (10) comprises and L shaped head (1440) integrated cylinder block (20) and crankcase (30) that described crankcase (30) comprises crankcase inwall (90) and crankcase outer wall (89); The inner pedestal (21b) that is molded over the outer bearing carrier (21a) of described crankcase outer wall (89) and/or is molded over described crankcase inwall (90) part-structure and cylinder block (20) at least is one-body molded; The open valve porthole chamber (88) of at least one longitudinal extension is located between described crankcase outer wall (89) and the cylinder block (20); Also comprise and cover the last L shaped head (1440) and cylinder chamber (12) in described porthole chamber (88), described cylinder chamber (12) is located in the cylinder block (20) and with crankcase inwall (90) and is separated setting; The part of arbor (22) is positioned between inner bearing (21a) and the outer bearing (22b); Porthole chamber (2) pass porthole chamber (88) and flexibly connect with it be used for to arbor (22) thus power transmit Open valve (98) and throttle down (99).

22. internal-combustion engine according to claim 21 is characterized in that, also comprises L shaped head valve chamber (107), described L shaped head valve chamber (107) is located in the porthole chamber (880); Be located at and be used in the described L shaped head valve chamber controlling the suction valve mechanism (120) of air inlet and being located at the exhaust valve mechanism (120b) that described L shaped head valve chamber is used to control exhaust.

23. internal-combustion engine according to claim 22, it is characterized in that: also comprise pipeline (502), connecting tube (127) links together vaporizer (500) and crankcase cavity (48) to described pipeline (502) in the described suction valve mechanism (120) by being located at.

24. internal-combustion engine according to claim 23, it is characterized in that, also comprise one-way valve (128), described one-way valve (128) is located at movably and describedly is used for preventing being back to surrounding environment and the first stroke pipeline (126a) and the second stroke pipeline (126b) by vaporizer (500) in pipeline (502), wherein, the first stroke pipeline (126a) and the second stroke pipeline (126b) link together vaporizer (500) and the firing chamber (51) be located in the cylinder chamber (12) with described by suction valve mechanism (120).

25. internal-combustion engine according to claim 22, it is characterized in that, comprise the first stroke pipeline (126a) and the second stroke pipeline (126b) again, the described first stroke pipeline (126a) and the second stroke pipeline (126b) link together vaporizer (500) and the firing chamber (51) be located in the cylinder chamber (12) by suction valve assembly (120); The vaporizer valve (584) of vaporizer (500) has first valve (584a) of movable setting and the flow that second valve (584b) is used for regulating respectively the first stroke pipeline (126a) and the second stroke pipeline (126b).

26. internal-combustion engine according to claim 25, it is characterized in that: comprise also being used in the motor suction process that described device links together vaporizer (500) and crankcase cavity (48) during at least one upstroke vaporizer (500) and the direct-connected device in cylinder chamber (12).

27. internal-combustion engine according to claim 4 is characterized in that: also comprise ascending pipe (101), described ascending pipe is located in the admission line (126) between vaporizer (500) and the crankcase cavity (48).

28. according to any described internal-combustion engine among the claim 16-23, it is characterized in that: also comprise, described crankcase cover (1312) covers and is being arranged on crankcase (30) the crankcase chamber (48), and with crankcase chamber (48) and be positioned at crankcase cover (1312) and oil pump wall (1344) between oil pump (1348) separate; Pipeline (1320) is located between crankcase cavity (48) and the oil pump (1348), stretches out and stretches into oil pump (1348) from crankcase cover (1312); Or groove walls (1314), described groove walls week is provided with around described groove (1316), and extend in the oil pump (1348).

29. internal-combustion engine according to claim 27, it is characterized in that, also comprise one or more fuel lines (1328), described fuel line (1328) is arranged in one or more isolating pipelines (1324), and described isolating pipelines extends to the oil pump (1348) from crankcase cover (1312).

30. internal-combustion engine according to claim 16 is characterized in that: crankcase cover (44), described crankcase cover (44) cover on the crankcase cavity (48) of crankcase (30); Fuel tank (2007), described fuel tank (2007) is used to load liquefied petroleum or other compressed fuel gas that uses for motor, the part of described fuel tank places in the groove (45), and described groove (45) is positioned on the inner lid (44b) of described crankcase cover (44); Described fuel tank (2007) and groove fit setting, and have small gap between the two.

31. internal-combustion engine according to claim 30 is characterized in that, is provided with the low thermal conductance material of damping along lid (44b) between crankcase cover (44) He Youta (2007).