CN201982174U - Crankshaft layout of three-cylinder engine - Google Patents
Crankshaft layout of three-cylinder engine Download PDFInfo
- Publication number
- CN201982174U CN201982174U CN2011200320904U CN201120032090U CN201982174U CN 201982174 U CN201982174 U CN 201982174U CN 2011200320904 U CN2011200320904 U CN 2011200320904U CN 201120032090 U CN201120032090 U CN 201120032090U CN 201982174 U CN201982174 U CN 201982174U
- Authority
- CN
- China
- Prior art keywords
- crank
- piston
- sides
- cylinder
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a crankshaft layout of a three-cylinder engine, which comprises a plurality of piston connecting rod groups and a plurality of crankshafts. The crankshaft layout is characterized in that vibration generated in operation of the engine is balanced through enlargement of the middle piston connecting rod group and the middle parts of the crankshafts and counterweighing of the two side piston connecting rod groups and the connecting crankshaft parts, so that the engine can operate in a balanced way. The crankshaft layout has the advantages that the engine cannot easily shake, cylinders cannot be easily pulled, and the power performance is good.
Description
Technical field
The internal structure that the utility model relates to a kind of motor especially is fit to the in-built crank throw layout of three cylinder engine.
Background technique
Each cylinder internal of three cylinder engine of knowing altogether at present all has identical piston rod group, and each piston rod group has identical piston, piston ring, wrist pin, connecting rod, connecting-rod bolts, connecting rod bearing shell etc.Bent axle also is made up of identical crank and axle journal, and the crank throw angle is 120 °.The motor shake that this crank throw is arranged is obvious, easy scuffing of cylinder bore, and power character is poor.Be mainly used in low discharge capacity compact car.It is big that existing four cylinder engine is used for the compact car volume, the oil consumption height.
Summary of the invention
The technical problem that solves: obvious in order to overcome the existing three cylinder engine sign of shaking, easy scuffing of cylinder bore, noise is big, the shortcoming of power character difference, the utility model provide a kind of crank throw method for arranging, and this method can make the three cylinder engine running steadily, be difficult for scuffing of cylinder bore, power character is strong, and can increase discharge capacity.
Technological scheme
The technological scheme that the utility model technical solution problem is adopted is: with two cylinders in the middle of the conventional in-line four cylinder engine, the piston rod group and the connecting crank of two cylinders, crank comprises crank pin and crankweb, merges into a cylinder and a cover piston rod group and a crank.The piston rod group that merges back increase middle cylinder or steam comprises piston, and it all is the twice of the piston rod group of both sides cylinder on weight that piston ring, wrist pin, connecting rod, connecting-rod bolts, the density of material of connecting rod bearing shell etc. make them.The weight of intermediate piston connection rod set equal both sides piston rod group and, volume then increases with same ratio, if just increase to the twice of both sides with same ratio, then need not increase density of material, also can not increase with original the same.If increase, the increase of middle cylinder or steam, piston ring makes the frictional force of the frictional force of middle cylinder or steam wall and piston ring and both sides cylinder wall and piston ring the same.Actual volume is decided according to the actual displacement of motor.Three cylinder strokes are identical, and the compressive ratio in cylinder of both sides is identical.If the volume of middle cylinder or steam just increases to the twice of both sides, then three compressives ratio in cylinder are identical, if do not increase to twice, then heighten the middle cylinder or steam compression ratio, guarantee intermediate piston connection rod set and both sides piston rod group running balance.When the fuel injection quantity of turning down middle cylinder or steam makes the work done of middle cylinder or steam piston during with the piston work done of the cylinder of both sides active force identical.The structure of other parts is the same with traditional four cylinder engine.Bent axle comprises crank pin, crankweb, main journal.The bent axle center crank connects the main journal overstriking.The crank throw angle is 180 °.Bent axle individual operation balance.If the crankshaft operation imbalance then adds equilibrium block in the above, reach the purpose of engine running balance.
The action relationships of the utility model in each stroke of engine running is: the both sides piston is positioned at the top when beginning, piston moves downward then, in the time of motion, intermediate piston then moves upward, the both sides piston moves to lower fulcrum by top dead center, intermediate piston then moves to fulcrum by lower dead center, and piston makes 180 ° of crankshaft rotating by connecting rod.Intermediate piston was positioned at top dead center when next stroke began, and piston moves downward then, and when moving downward, the both sides piston then moves to top dead center by lower dead center, and piston makes bent axle continue Rotate 180 ° by connecting rod.Intermediate piston connection rod set and the increase that is connected on the bent axle part weight make three mutual balances of piston motion.
The beneficial effect that the utility model produces is: the both sides piston arrives top dead center or lower dead center simultaneously, and intermediate piston increases engine displacement, is difficult for scuffing of cylinder bore.Engine running is steady.Middle cylinder or steam increases engine body intensity.The middle cylinder or steam fuel injection quantity is low, reduces engine consumption.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is traditional four cylinder engine crank throw layout plan.
Fig. 2 is a longitudinal section of the present utility model tectonic maps.
Fig. 3 is second embodiment's of the utility model a longitudinal section tectonic maps.
In Fig. 2,1. piston, 2. piston ring, 3. wrist pin, 4. connecting rod, 5. connecting rod bearing shell, 6. main journal, 7. crank pin, 8. crankweb, 9. cylinder wall, 10. flywheel.
Embodiment
Among Fig. 1, piston (1) contacts with cylinder wall (9) by piston ring (2), and connecting rod (4) upper end links to each other with piston (1) by wrist pin (3), and the lower end links to each other with crank pin on the bent axle (7) by bolt and connecting rod bearing shell (5).Crank pin (7) links to each other with axle journal (6) on the bent axle by crankweb (8).Bent axle links to each other with flywheel (10).For the engine running balance, each each component sizes of piston rod group, weight, shape are identical, and four piston rod group drive manners are identical.
Among Fig. 2 embodiment, the intermediate piston connection rod set, the volume of intermediate crank pin (7) and center crank arm (8), piston rod group in both sides, increase with same ratio on the basis of crank pin of both sides (7) and crankweb (8), weight increases to the twice of both sides, and intermediate piston piston ring and cylinder area of contact increase to the twice of both sides, the increase of intermediate piston connection rod set and both sides piston rod group running balance.Intermediate crank pin (7) increases, and center crank arm (8) increases simultaneously, and with both sides piston rod group connecting crank pins (7) and crankweb (8) balance, center crank arm (8) connects main journal (6) overstriking, makes bent axle individual operation balance.Center crank arm (8) connects the corresponding overstriking of main journal (6), increases crankshaft strength, strengthens the engine running balance.
In another embodiment shown in Figure 3, intermediate connecting rod bearing shell (5) increases to be convenient to link to each other with the middle crank pin (7) that increases, three other component sizes of piston rod group are identical, and it is the twice of both sides piston rod group that each component materials density of increase intermediate piston connection rod set makes weight.Center crank increases, center crank arm (8) connect main journal (6) overstriking, 180 ° of crank throw angles, bent axle individual operation balance.
Claims (4)
1. a three cylinder engine crank throw is arranged, comprise piston rod group and bent axle, its characteristics are that the weight of intermediate piston connection rod set is the twice of both sides piston rod group, volume is greater than both sides piston rod group, the weight of bent axle center crank is the twice of both sides crank, volume is greater than the both sides crank, and center crank connects the main journal overstriking.
2. three cylinder engine crank throw as claimed in claim 1 arranges that its characteristics are that the crank throw angle is 180 °.
3. a three cylinder engine crank throw is arranged, comprise piston rod group and bent axle, its characteristics are that the weight of intermediate piston connection rod set is the twice of the piston rod group of both sides, the weight of bent axle center crank is the twice of the crank of both sides, volume is greater than the crank of both sides, and center crank connects the main journal overstriking.
4. three cylinder engine crank throw as claimed in claim 3 arranges that its characteristics are that the crank throw angle is 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200320904U CN201982174U (en) | 2011-01-25 | 2011-01-25 | Crankshaft layout of three-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200320904U CN201982174U (en) | 2011-01-25 | 2011-01-25 | Crankshaft layout of three-cylinder engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982174U true CN201982174U (en) | 2011-09-21 |
Family
ID=44609637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200320904U Expired - Fee Related CN201982174U (en) | 2011-01-25 | 2011-01-25 | Crankshaft layout of three-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982174U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104355A (en) * | 2011-11-10 | 2013-05-15 | 福特全球技术公司 | Three cylinder engine in which a cylinder may be selectively deactivated |
| CN103185062A (en) * | 2011-12-31 | 2013-07-03 | 上海汽车集团股份有限公司 | Crank shaft balanced system of inline three-cylinder engine |
| US9822712B2 (en) | 2011-11-10 | 2017-11-21 | Ford Global Technologies, Llc | Four-cylinder engine with two deactivatable cylinders |
| CN111527889A (en) * | 2020-05-07 | 2020-08-14 | 吴国莉 | Agricultural pine cone threshing agricultural machine device |
-
2011
- 2011-01-25 CN CN2011200320904U patent/CN201982174U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104355A (en) * | 2011-11-10 | 2013-05-15 | 福特全球技术公司 | Three cylinder engine in which a cylinder may be selectively deactivated |
| CN103104355B (en) * | 2011-11-10 | 2017-03-01 | 福特全球技术公司 | A kind of three-cylinder engine with the cylinder that can disable |
| US9822712B2 (en) | 2011-11-10 | 2017-11-21 | Ford Global Technologies, Llc | Four-cylinder engine with two deactivatable cylinders |
| CN103185062A (en) * | 2011-12-31 | 2013-07-03 | 上海汽车集团股份有限公司 | Crank shaft balanced system of inline three-cylinder engine |
| CN111527889A (en) * | 2020-05-07 | 2020-08-14 | 吴国莉 | Agricultural pine cone threshing agricultural machine device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201982174U (en) | Crankshaft layout of three-cylinder engine | |
| CN106090163A (en) | A kind of toggle of electromotor | |
| CN101225768A (en) | Connecting-rod offset engine | |
| CN202732266U (en) | Single-drive four-cylinder compressor structure | |
| CN104005847A (en) | Crankshaft connecting rod piston internal combustion engine with combustion chamber arranged in piston | |
| CN102913325A (en) | Engine hydraulic energy and power conversion device | |
| CN2900811Y (en) | Double crank shaft link rod mechanism engine | |
| CN106285934A (en) | Horizontally-opposed cylinder horizontally-opposed piston two-stroke homogeneity compression-ignition engine electromotor | |
| CN202431386U (en) | Diesel engine piston | |
| WO2011097016A3 (en) | Single-crankshaft, opposed-piston engine constructions | |
| CN103047005A (en) | Connecting rod of two-stroke diesel engine with opposed pistons | |
| CN105888838A (en) | Two-stroke opposed-piston internal combustion engine adopting rocker arm crank connecting rod mechanism | |
| CN202391565U (en) | Efficient internal combustion engine for offset cylinder | |
| CN201180761Y (en) | Vertical engine with good vibration damping performance | |
| CN101660447B (en) | Novel stationary point free piston engine | |
| CN206409317U (en) | A kind of piston of improved structure | |
| CN203962672U (en) | A kind of wedge shape small end con rod | |
| CN203978610U (en) | Twin cylinder engine connecting rod | |
| CN101655034B (en) | Fixed stopper point free piston engine | |
| CN207333022U (en) | A kind of d-axis piston engine | |
| KR101382314B1 (en) | Engine for vehicle | |
| CN115169193B (en) | Verification method for variable compression ratio mechanism of engine | |
| WO2016095260A1 (en) | Multi-cylinder internal combustion engine set adopting a crosshead assembly rod | |
| CN203822460U (en) | Crankshaft connecting rod piston internal combustion engine with combustion cavity formed in piston | |
| CN201330647Y (en) | Transmission mechanism of piston swinging-arm internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20130125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |