CN103216329B - Variable cylinder diameter becomes the single cylinder engine test device of stroke - Google Patents
Variable cylinder diameter becomes the single cylinder engine test device of stroke Download PDFInfo
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- CN103216329B CN103216329B CN201310143432.3A CN201310143432A CN103216329B CN 103216329 B CN103216329 B CN 103216329B CN 201310143432 A CN201310143432 A CN 201310143432A CN 103216329 B CN103216329 B CN 103216329B
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Abstract
The invention provides the single cylinder engine test device that a kind of variable cylinder diameter becomes stroke, it comprise cylinder, be positioned at the piston of cylinder, the connecting rod be connected with piston, the bent axle be connected with connecting rod, driving mechanism, intake and exhaust cam axle, fuel cam axle, cylinder block, crankcase body, intake and exhaust cam axle and fuel cam axle; Intake and exhaust cam axle and fuel cam axle are connected with bent axle by driving mechanism; Intake and exhaust cam axle is installed in intake and exhaust cam axle box, and fuel cam axle is installed in fuel cam axle box, and intake and exhaust cam axle box is connected by the second link with cylinder block respectively with fuel cam axle box; Cylinder is installed in cylinder block, and camshaft is installed in camshaft case, and crankshaft installed is in crankcase body; Cylinder block is connected by the first link with crankcase body, and camshaft case is connected by the second link with cylinder block.This single cylinder engine test apparatus structure is compact, layout is simple, easy accessibility, and complete machine development cost is low, and the lead time is short.
Description
Technical field
The present invention relates to a kind of single cylinder engine test device, particularly a kind of variable cylinder diameter becomes the single cylinder engine test device of stroke.
Background technique
In recent years, due to single cylinder engine test device compare complete machine have can to get rid of between cylinder and cylinder interference mutually and obtain more accurately working procedure test data, component easy accessibility, the advantages such as test speed can be accelerated, thus in reseach of engine process, played more and more important effect, especially cylinder diameter has been greater than to the development of the high-power diesel engine of 150mm.By using single cylinder simulation its technical, can accurately predicting multi-cylinder engine performance, save time and the cost of product development.
Single cylinder engine test device mainly bears burning exploitation, key components and parts checking and special pilot development task, and when the pilot development for different type of machines, configuration and the concrete research contents of single cylinder engine test device alter a great deal.At present, for different type of machines, single cylinder engine test device follows such method of production always: start anew to carry out separately the conception of single cylinder engine test device, design, structure verification, machining and assembling, the research and development demand of a certain concrete type finally usually can be met by such method, if develop the new class type of different cylinder diameter, different stroke, then must develop new single cylinder engine test device in addition, therefore development cost is high, and the lead time is long.
Fig. 1 is the structural representation of existing a kind of single cylinder engine test device, and as shown in Figure 1, the main cause causing current single cylinder engine test device only can meet single type demand is:
Body 1 is monolithic construction, when needs carry out new architecture exploitation, body 1 need be developed again, and the main parts size of single cylinder engine test device is nearly all associated with body 1, therefore changes body 1 and is almost equal to the single cylinder engine test device that development one is new again;
Camshaft case and the body 1 of installing fuel cam axle 2 and intake and exhaust cam axle 3 are monolithic construction, therefore when carrying out such as many camshafts scheme test, need change different bodies 1;
Cannot adjusting flexibly the gear transmission mode of fuel cam axle 2 and intake and exhaust cam axle 3, when carrying out multi-scheme test or new architecture exploitation, development need be re-started to it.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide the single cylinder engine test device that a kind of variable cylinder diameter becomes stroke, to reduce complete machine development cost, shortens the lead time.
The single cylinder engine test device that variable cylinder diameter provided by the invention becomes stroke comprises cylinder, is positioned at the piston of described cylinder, the connecting rod be connected with described piston, the bent axle be connected with described connecting rod, driving mechanism, intake and exhaust cam axle, fuel cam axle, cylinder block, crankcase body, intake and exhaust cam axle and fuel cam axle; Described intake and exhaust cam axle and described fuel cam axle are connected with described bent axle by described driving mechanism; Described intake and exhaust cam axle is installed in described intake and exhaust cam axle box, described fuel cam axle is installed in described fuel cam axle box, and described intake and exhaust cam axle box is connected by described second link with described cylinder block respectively with described fuel cam axle box; Described cylinder is installed in described cylinder block, and described camshaft is installed in described camshaft case, and described crankshaft installed is in described crankcase body; Described cylinder block is connected by the first link with described crankcase body, and described camshaft case is connected by the second link with described cylinder block.
Because housing construction adopts modular design, the cylinder block of body is relevant to cylinder bore, and crankcase body then has nothing to do with cylinder bore, only needs to change cylinder block part when therefore adjusting cylinder bore.Independently camshaft case structure makes when carrying out the test of camshaft multi-scheme, only need to change camshaft case, modular design also can the position of flexible arrangement camshaft, conveniently can carry out the test of different distribution device, thus reduce complete machine development cost, shorten the lead time.
In a preferred embodiment of the present invention, described driving mechanism comprises camshaft drive gear, the first idle pulley, the second idle pulley and crankshaft gear, described camshaft drive gear, described first idle pulley, described second idle pulley and described crankshaft gear engagement driving successively.
Preferably, described camshaft drive gear and described first idle pulley are installed in described cylinder block, and described second idle pulley and described crankshaft gear are installed in described crankcase body.
Or described camshaft drive gear and described first idle pulley are installed in described camshaft case, and described second idle pulley and described crankshaft gear are installed in described crankcase body.
The design of driving mechanism have employed the design of flexible adjustable transmission system, when converting for different type of machines, camshaft drive gear and described first idle pulley can be changed with cylinder block or camshaft case simultaneously, therefore the flexible adjustment to driving mechanism can be realized, when carrying out multi-scheme test or new architecture exploitation without the need to again developing it.
In another preferred embodiment of the present invention, described driving mechanism comprises camshaft drive gear, Transmitted chains and crankshaft gear, and described Transmitted chains connects described camshaft drive gear and described crankshaft gear.
The structural type of linked transmission can make the layout of driving mechanism and design more flexible.
Preferably, single cylinder engine test device provided by the present invention also comprises mass balance system and support, and described mass balance system comprises trunnion shaft and equilibrium block, and described equilibrium block is installed on described trunnion shaft, and described trunnion shaft is installed in described support.
Preferably, single cylinder engine test device provided by the present invention also comprises the first balance shaft drive gear and secondary balance shaft driving gear, described crankshaft gear, described first balance shaft drive gear and described secondary balance shaft driving gear engagement driving successively.
Preferably, described first balance shaft drive gear and described secondary balance shaft driving gear are installed in described support.
Preferably, described first link is bolt, and described second link is screw.
Mass balance system also adopts modular design, is divided into trunnion shaft and equilibrium block two parts, and therefore when becoming cylinder diameter and becoming stroke, the agent structures such as trunnion shaft can remain unchanged, and only adjust in right amount equilibrium block weight, can meet the needs of different type of machines.
Single cylinder engine test device provided by the present invention not only compact structure, arrange simple, easy accessibility, and only need change a small amount of component and just can complete different cylinder diameter, different stroke single cylinder engine test plant modification form test capability fast, considerably reduce complete machine development cost, improve the utilization ratio of test room and test room's auxiliary system, and shorten the lead time.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing a kind of single cylinder engine test device.
Fig. 2 is the structural representation of a kind of single cylinder engine test device in preferred embodiment of the present invention.
Fig. 3 is the structural representation of the driving mechanism in the single cylinder engine test device shown in Fig. 2.
Embodiment
Fig. 2 and Fig. 3 shows the preferred embodiment that variable cylinder diameter provided by the invention becomes the single cylinder engine test device of stroke.
As shown in Figures 2 and 3, a kind of single cylinder engine test device 100 in preferred embodiment of the present invention adopts modular design, body forms primarily of cylinder head 101, intake and exhaust cam axle box 102, fuel cam axle box 103, cylinder block 104, crankcase body 105 and support 106, and critical piece comprises piston 110, cylinder 111, cylinder liner 112, connecting rod 113, bent axle 114, main bearing cap 115, intake and exhaust cam axle 116, fuel cam axle 117, mass balance system 118 and driving mechanism 120.
Be set with cylinder liner 112 outside cylinder 111, and be arranged in cylinder block 104 together, the two ends of connecting rod 113 are connected with piston 110 and bent axle 114 respectively, and piston 110 makes iterative motion in cylinder 111.Intake and exhaust cam axle 116, fuel cam axle 117 are connected by driving mechanism 120 with bent axle 114.Intake and exhaust cam axle 116 and fuel cam axle 117 are installed in intake and exhaust cam axle box 102 and fuel cam axle box 103 respectively, and bent axle 114 is installed in crankcase body 105.
In the present embodiment, because intake and exhaust cam axle box 102, fuel cam axle box 103, cylinder block 104 and crankcase body 105 all have employed independently modular design, only the structure of cylinder block 104 is relevant to cylinder bore, crankcase body 105 is substantially irrelevant with cylinder bore, therefore, when converting type or carry out multi-scheme research, only need as required, optionally change intake and exhaust cam axle box 102, fuel cam axle box 103, cylinder block 104 and crankcase body 105, and without the need to changing whole body.
When converting different type of machines, design cylinder block 104 can be required according to the mounting interface of the component such as the cylinder head 101 of actual match type, cylinder liner 112, piston 110, connecting rod 113, intake and exhaust cam axle 116 and fuel cam axle 117, when becoming cylinder diameter and becoming stroke, can according to adopted type concrete condition, change design and change cylinder block 104, and crankcase body 105 need not be changed.
Support 106 because crankcase body 105 and cylinder bore are substantially irrelevant, can design it by meeting peak work capacity, so that when carrying out change cylinder diameter and becoming stroke design, need not change crankcase body 105, also can remain unchanged.Modular intake and exhaust cam axle box 102 and fuel cam axle box 103 make camshaft can flexible arrangement, conveniently carry out the test of different distribution device.The journal size of intake and exhaust cam axle 116, fuel cam axle 117 can design by meeting maximum capacity job requirement, without the need to changing the component such as cam shaft bush in change procedure.
In the present embodiment, be connected by bolt 107 between cylinder block 104 with crankcase body 105, cylinder block 104 is connected by screw 108 with between intake and exhaust cam axle box 102 and fuel cam axle box 103, and in other embodiments, also be connected by screw between cylinder block 104 with crankcase body 105, cylinder block 104 is connected by bolt with between intake and exhaust cam axle box 102 and fuel cam axle box 103, or adopts other links, and the present invention is not restricted this.In the present embodiment, camshaft is two separately, i.e. intake and exhaust cam axle 116 and fuel cam axle 117, in other embodiments, also according to different motors, a camshaft of both unifications can be designed to, correspondingly, coordinate a camshaft case, the present invention is not restricted this.
In this preferred embodiment, the main journal size of bent axle 114 can by meeting peak work capacity design, can retain main bearing cap 115 for different type of machines, crank pin spot size adapts with the connecting rod 113 mating type.Mass balance system 118 also uses modular design, and be divided into trunnion shaft and equilibrium block two parts, equilibrium block is installed on trunnion shaft, and trunnion shaft is installed in support 106, and support 106 is connected with crankcase body 105.When becoming cylinder diameter and becoming stroke, the agent structures such as trunnion shaft can remain unchanged, and only adjust in right amount equilibrium block weight, to meet the needs of different type of machines.
As shown in Figure 3, the driving mechanism 120 in this preferred embodiment comprises camshaft drive gear 121, first idle pulley 122, second idle pulley 123 of engagement driving successively, crankshaft gear 124, first balance shaft drive gear 125 and secondary balance shaft driving gear 126.Those skilled in the art is known, when the camshaft adopting intake and exhaust cam axle and fuel cam axle to unify, only use a camshaft drive gear, when two camshafts adopting intake and exhaust cam axle and fuel cam axle to separate, need two camshaft drive gears.Only one of them is shown in Fig. 3, and eliminates another.
Camshaft drive gear 121 and the first idle pulley 122 are arranged in cylinder block 104, and the second idle pulley 123 and crankshaft gear 124 are arranged in crankcase body 105, and the first balance shaft drive gear 125 and secondary balance shaft driving gear 126 are arranged in support 106.When converting for different type of machines, camshaft drive gear 121 and the first idle pulley 122 can be changed with cylinder block 104 simultaneously, without the need to adjusting the second idle pulley 123, crankshaft gear 124, first balance shaft drive gear 125 and secondary balance shaft driving gear 126.
In other embodiments, camshaft drive gear 121 and the first idle pulley 122 can be arranged on intake and exhaust cam axle box 102 or fuel cam axle box 103, when converting for different type of machines, can change with it simultaneously.Driving mechanism 120 can also adopt linked transmission, such as, the first idle pulley 122 and the second idle pulley 123 is replaced with Transmitted chains, connect camshaft drive gear 121 and crankshaft gear 124, when relative position between camshaft drive gear 121 and crankshaft gear 124 changes, only need adjustment or change Transmitted chains, thus make the layout of whole driving mechanism and design more flexible.
In sum, compare prior art, the single cylinder engine test device that variable cylinder diameter provided by the present invention becomes stroke has following significantly beneficial effect: modular design makes single cylinder engine compact structure, arranges simple, easy accessibility; Versatility is good, for different type of machines, single cylinder engine is without the need to changing whole airframe components, and only need change a small amount of component, just different cylinder diameter, different stroke single cylinder engine test plant modification form test capability can be completed fast, can greatly reduce Diesel Engine Complete Machine development cost, improve the utilization ratio of test room and test room's auxiliary system, and shorten the lead time.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that the ordinary skill of related domain just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should in claims of the present invention under this invention's idea on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment.
Claims (9)
1. the single cylinder engine test device of a variable cylinder diameter change stroke, is characterized in that, comprise cylinder, be positioned at the piston of described cylinder, the connecting rod be connected with described piston, the bent axle be connected with described connecting rod, driving mechanism, intake and exhaust cam axle box, fuel cam axle box, cylinder block, crankcase body, intake and exhaust cam axle and fuel cam axle; Described intake and exhaust cam axle and described fuel cam axle are connected with described bent axle by described driving mechanism; Described intake and exhaust cam axle is installed in described intake and exhaust cam axle box, and described fuel cam axle is installed in described fuel cam axle box, and described intake and exhaust cam axle box is connected by the second link with described cylinder block respectively with described fuel cam axle box; Described cylinder is installed in described cylinder block, and described crankshaft installed is in described crankcase body; Described cylinder block is connected by the first link with described crankcase body;
Described intake and exhaust cam axle box, described fuel cam axle box, described cylinder block, described crankcase body are independently modules; The journal size of described intake and exhaust cam axle, described fuel cam axle designs by meeting maximum capacity job requirement; Described crankcase body designs by meeting maximum capacity job requirement;
Described single cylinder engine test device also comprises mass balance system and support, and described mass balance system comprises trunnion shaft and equilibrium block, and described equilibrium block is installed on described trunnion shaft, and described trunnion shaft is installed in described support; When becoming cylinder diameter and becoming stroke, described trunnion shaft remains unchanged, and only adjusts described equilibrium block weight, to meet the needs of different type of machines.
2. variable cylinder diameter according to claim 1 becomes the single cylinder engine test device of stroke, it is characterized in that, described driving mechanism comprises camshaft drive gear, the first idle pulley, the second idle pulley and crankshaft gear, described camshaft drive gear, described first idle pulley, described second idle pulley and described crankshaft gear engagement driving successively.
3. variable cylinder diameter according to claim 2 becomes the single cylinder engine test device of stroke, it is characterized in that, described camshaft drive gear and described first idle pulley are installed in described cylinder block, and described second idle pulley and described crankshaft gear are installed in described crankcase body.
4. variable cylinder diameter according to claim 2 becomes the single cylinder engine test device of stroke, it is characterized in that, described camshaft drive gear and described first idle pulley are installed in described intake and exhaust cam axle box or described fuel cam axle box, and described second idle pulley and described crankshaft gear are installed in described crankcase body.
5. variable cylinder diameter according to claim 1 becomes the single cylinder engine test device of stroke, it is characterized in that, described driving mechanism comprises camshaft drive gear, Transmitted chains and crankshaft gear, and described Transmitted chains connects described camshaft drive gear and described crankshaft gear.
6. variable cylinder diameter according to claim 5 becomes the single cylinder engine test device of stroke, it is characterized in that, also comprise the first balance shaft drive gear and secondary balance shaft driving gear, described crankshaft gear, described first balance shaft drive gear and described secondary balance shaft driving gear engagement driving successively.
7. variable cylinder diameter according to claim 6 becomes the single cylinder engine test device of stroke, and it is characterized in that, described first balance shaft drive gear and described secondary balance shaft driving gear are installed in described support.
8. variable cylinder diameter according to claim 1 becomes the single cylinder engine test device of stroke, and it is characterized in that, described first link is bolt.
9. variable cylinder diameter according to claim 1 becomes the single cylinder engine test device of stroke, and it is characterized in that, described second link is screw.
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| CN201310143432.3A CN103216329B (en) | 2013-04-23 | 2013-04-23 | Variable cylinder diameter becomes the single cylinder engine test device of stroke |
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| CN201310143432.3A CN103216329B (en) | 2013-04-23 | 2013-04-23 | Variable cylinder diameter becomes the single cylinder engine test device of stroke |
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| CN103216329B true CN103216329B (en) | 2015-10-21 |
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| CN105136464B (en) * | 2015-09-08 | 2017-08-29 | 西华大学 | A kind of engine crankshaft connecting rod simulation mechanism |
| CN113217220B (en) * | 2021-05-26 | 2022-07-26 | 河南柴油机重工有限责任公司 | Single cylinder engine body |
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| CN2878690Y (en) * | 2006-02-08 | 2007-03-14 | 陈恳 | Small-scale diesel oil engine |
| CN201284695Y (en) * | 2008-10-28 | 2009-08-05 | 重庆万虎机电有限责任公司 | Detachable single-cylinder diesel engine |
| CN101749373A (en) * | 2008-12-16 | 2010-06-23 | 江苏江淮动力股份有限公司 | A kind of gear transmission of diesel engine |
| CN201614985U (en) * | 2009-12-10 | 2010-10-27 | 洛阳北方企业集团有限公司 | Split cylinder head structure of overhead camshaft engine |
| CN103047370A (en) * | 2012-12-20 | 2013-04-17 | 中国兵器工业集团第七0研究所 | Novel transmission mechanism for single-cylinder engine |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |
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