CN203239454U - Single-cylinder engine test device with variable cylinder diameter and variable stroke - Google Patents
Single-cylinder engine test device with variable cylinder diameter and variable stroke Download PDFInfo
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- CN203239454U CN203239454U CN 201320209673 CN201320209673U CN203239454U CN 203239454 U CN203239454 U CN 203239454U CN 201320209673 CN201320209673 CN 201320209673 CN 201320209673 U CN201320209673 U CN 201320209673U CN 203239454 U CN203239454 U CN 203239454U
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Abstract
The utility model provides a single-cylinder engine test device with a variable cylinder diameter and a variable stroke. The single-cylinder engine test device with the variable cylinder diameter and the variable stroke comprises an air cylinder, a piston located inside the air cylinder, a connecting rod connected with the piston, a crank shaft connected with the connecting rod, a transmission mechanism, an air inlet and outlet cam shaft, a fuel oil cam shaft, an air cylinder body, a crank shaft box body, an air inlet and outlet cam shaft box and a fuel oil cam shaft box, wherein the air cylinder is installed inside the air cylinder body, the crank shaft is installed inside the crank shaft box body, the air inlet and outlet cam shaft is installed inside the air inlet and outlet cam shaft box, the fuel oil cam shaft is installed inside the fuel oil cam shaft box, the air cylinder body is connected with the crank shaft box body through a first connecting piece, the air inlet and outlet cam shaft box and the fuel oil cam shaft box are respectively connected with the air cylinder body through second connecting pieces, and the air inlet and outlet cam shaft and the fuel oil cam shaft are connected with the crank shaft through the transmission mechanism. The single-cylinder engine test device with the variable cylinder diameter and the variable stroke is compact in structure, simple in arrangement, convenient to detach and install, low in development cost of the entire engine, and short in developing cycle.
Description
Technical field
The utility model relates to a kind of single cylinder engine testing apparatus, and particularly a kind of variable cylinder diameter becomes the single cylinder engine testing apparatus of stroke.
Background technique
In recent years, owing to the single cylinder engine testing apparatus is compared complete machine and had and can get rid of between cylinder and the cylinder phase mutual interference and obtain more accurately working procedure test data, component easy accessibility, can accelerate the advantages such as test speed, thereby in the reseach of engine process, brought into play more and more important effect.At present, for different type of machines, the single cylinder engine testing apparatus is being followed such method of production always: conception, design, structure verification, machining and the assembling of the single cylinder engine testing apparatus that starts anew to carry out separately, finally usually can satisfy the research and development demand of a certain concrete type with such method, but, if develop the new architecture of different cylinder diameters, different strokes, just must develop in addition new single cylinder engine testing apparatus, 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 testing apparatus, as shown in Figure 1, the body 1 of existing single cylinder engine testing apparatus is monolithic construction, the cylinder block of cylinder is installed, the camshaft case of the crankcase body of bent axle being installed and being installed into exhaust cam shaft 2, fuel cam axle 3 all is the part of body 1, when needs are developed the new architecture of different cylinder diameters, different strokes, whole body 1 needs again development, thereby development cost is high, and the lead time is long.
The model utility content
Because the defects of prior art, technical problem to be solved in the utility model provides the single cylinder engine testing apparatus that a kind of variable cylinder diameter becomes stroke, to reduce the complete machine development cost, shortens the lead time.
The single cylinder engine testing apparatus that the variable cylinder diameter that the utility model provides becomes stroke comprises cylinder, is positioned at the piston of described cylinder, the connecting rod that links to each other with described piston, the bent axle that links to each other with described connecting rod, driving mechanism, intake and exhaust cam axle, fuel cam axle, cylinder block, crankcase body, intake and exhaust cam axle box and fuel cam axle box; Described cylinder is installed in the described cylinder block, and described crankshaft installed is in described crankcase body, and described intake and exhaust cam axle is installed in the described intake and exhaust cam axle box, and described fuel cam axle is installed in the described fuel cam axle box; Described cylinder block is connected by the first link with described crankcase body, 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 intake and exhaust cam axle and described fuel cam axle link to each other with described bent axle by described driving mechanism.
Because body has independently cylinder block and crankcase, cylinder block is relevant with cylinder bore, and crankcase body is then irrelevant with cylinder bore, only need change the cylinder block part when therefore adjusting cylinder bore.Therefore, when becoming the design of cylinder diameter change stroke, can according to employing type concrete condition, change design and change cylinder block, and need not change crankcase body, thereby the shortening R﹠D cycle be reduced R﹠D costs.
Independently the camshaft case structure be so that carrying out camshaft multi-scheme when test, only need change camshaft case, but the position of flexible arrangement camshaft more can conveniently carry out the test of different distribution devices, thereby reduce the complete machine development cost, shorten the lead time.
Preferably, described the first link is bolt.
Preferably, described the second link is screw.
The single cylinder engine testing apparatus of variable cylinder diameter change stroke provided by the utility model is compact structure, simple, the easy accessibility of layout not only, and only need change a small amount of component and just can finish fast different cylinder diameters, the transformation of different stroke single cylinder engine testing apparatus and form test capability, greatly reduced the complete machine development cost, improve the utilization ratio of test room and test room's auxiliary system, and shortened the lead time.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand fully the purpose of this utility model, feature and effect.
Description of drawings
Fig. 1 is the structural representation of existing a kind of single cylinder engine testing apparatus.
Fig. 2 is the structural representation that a kind of variable cylinder diameter in the preferred embodiment of the present utility model becomes the single cylinder engine testing apparatus of stroke.
Fig. 3 is the structural representation of the driving mechanism in the single cylinder engine testing apparatus shown in Figure 2.
Embodiment
The variable cylinder diameter that Fig. 2 and Fig. 3 show the utility model to be provided becomes a preferred embodiment of the single cylinder engine testing apparatus of stroke.As shown in Figures 2 and 3, the body of a kind of single cylinder engine testing apparatus 100 in the preferred embodiment of the present utility model mainly is comprised 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.
In the present embodiment, because intake and exhaust cam axle box 102, fuel cam axle box 103, cylinder block 104 and crankcase body 105 have all adopted independently casing, only the structure of cylinder block 104 is relevant with cylinder bore, crankcase body 105 is substantially irrelevant with cylinder bore, therefore, when the conversion different type of machines, can be according to the cylinder head 101 of actual match type, cylinder liner 112, piston 110, connecting rod 113, the mounting interface of the component such as intake and exhaust cam axle 116 and fuel cam axle 117 requires design cylinder block 104, when becoming cylinder diameter change stroke, can be according to employing type concrete condition, change design and change cylinder block 104, and need not change crankcase body 105.
Because crankcase body 105 is substantially irrelevant with cylinder bore, can design it by satisfying peak work capacity, in order to when becoming the design of cylinder diameter change stroke, need not change crankcase body 105, support 106 also can remain unchanged.Independently intake and exhaust cam axle box 102 and fuel cam axle box 103 are so that but the camshaft flexible arrangement is conveniently carried out the test of different distribution devices.The journal size of intake and exhaust cam axle 116, fuel cam axle 117 can design by satisfying the maximum capacity job requirement, need not to change the component such as cam shaft bush in change procedure.
In the present embodiment, be connected by bolt 107 between cylinder block 104 and the crankcase body 105, be connected by screw 108 between cylinder block 104 and intake and exhaust cam axle box 102 and the fuel cam axle box 103, and in other embodiments, can adopt other links, the utility model is not restricted this yet.
In this preferred embodiment, mass balance system 118 is divided into trunnion shaft and two parts of equilibrium block, and equilibrium block is installed on the trunnion shaft, and trunnion shaft is installed in the support 106, and support 106 is connected with crankcase body 105.When becoming cylinder diameter change stroke, the agent structures such as trunnion shaft can remain unchanged, and only equilibrium block weight are adjusted in right amount, to satisfy the needs of different type of machines.
As shown in Figure 3, the driving mechanism in this preferred embodiment 120 comprises successively camshaft driving gear 121, the first idle pulley 122, the second idle pulley 123, crankshaft gear 124, the first trunnion shaft driving gear 125 and the secondary balance shaft driving gear 126 of engagement driving.Those skilled in the art as can be known, when adopting the camshaft of intake and exhaust cam axle and fuel cam axle unification, only use a camshaft driving gear, when two camshafts adopting intake and exhaust cam axle and fuel cam axle to separate, need two camshaft driving gears.Among Fig. 3 one of them only is shown, and has omitted another.
Camshaft driving gear 121 and the first idle pulley 122 are installed in the cylinder block 104, and the second idle pulley 123 and crankshaft gear 124 are installed in the crankcase body 105, and the first trunnion shaft driving gear 125 and secondary balance shaft driving gear 126 are installed in the support 106.For the different type of machines conversion time, camshaft driving gear 121 and the first idle pulley 122 can be changed simultaneously with cylinder block 104, need not the second idle pulley 123, crankshaft gear 124, the first trunnion shaft driving gear 125 and secondary balance shaft driving gear 126 are adjusted.
In other embodiments, camshaft driving gear 121 and the first idle pulley 122 can be installed in intake and exhaust cam axle box 102 or the fuel cam axle box 103, for the different type of machines conversion time, can change simultaneously with it.
In sum, compare prior art, the single cylinder engine testing apparatus that variable cylinder diameter provided by the utility model becomes stroke has following remarkable beneficial effect: the single cylinder engine compact structure, arrange simply easy accessibility; Versatility is good, for different type of machines, single cylinder engine need not to change whole airframe components, and only need change a small amount of component, just can finish fast different cylinder diameters, the transformation of different stroke single cylinder engine testing apparatus and form test capability, can greatly reduce the 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 utility model in detail.The ordinary skill that should be appreciated that related domain need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all in the art technician comply with design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in claim protection domain of the present utility model.
Claims (3)
1. a variable cylinder diameter becomes the single cylinder engine testing apparatus of stroke, it is characterized in that, comprising: cylinder, the piston that is positioned at described cylinder, the connecting rod that links to each other with described piston, the bent axle that links to each other with described connecting rod, driving mechanism, intake and exhaust cam axle, fuel cam axle, cylinder block, crankcase body, intake and exhaust cam axle box and fuel cam axle box;
Described cylinder is installed in the described cylinder block, and described crankshaft installed is in described crankcase body, and described intake and exhaust cam axle is installed in the described intake and exhaust cam axle box, and described fuel cam axle is installed in the described fuel cam axle box; Described cylinder block is connected by the first link with described crankcase body, 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 intake and exhaust cam axle and described fuel cam axle link to each other with described bent axle by described driving mechanism.
2. variable cylinder diameter according to claim 1 becomes the single cylinder engine testing apparatus of stroke, it is characterized in that described the first link is bolt.
3. variable cylinder diameter according to claim 1 becomes the single cylinder engine testing apparatus of stroke, it is characterized in that described the second link is screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209673 CN203239454U (en) | 2013-04-23 | 2013-04-23 | Single-cylinder engine test device with variable cylinder diameter and variable stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209673 CN203239454U (en) | 2013-04-23 | 2013-04-23 | Single-cylinder engine test device with variable cylinder diameter and variable stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239454U true CN203239454U (en) | 2013-10-16 |
Family
ID=49316763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320209673 Expired - Lifetime CN203239454U (en) | 2013-04-23 | 2013-04-23 | Single-cylinder engine test device with variable cylinder diameter and variable stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239454U (en) |
-
2013
- 2013-04-23 CN CN 201320209673 patent/CN203239454U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
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| CX01 | Expiry of patent term |