CN2883694Y - Constant volume burning I.C. engine - Google Patents
Constant volume burning I.C. engine Download PDFInfo
- Publication number
- CN2883694Y CN2883694Y CNU2005201078245U CN200520107824U CN2883694Y CN 2883694 Y CN2883694 Y CN 2883694Y CN U2005201078245 U CNU2005201078245 U CN U2005201078245U CN 200520107824 U CN200520107824 U CN 200520107824U CN 2883694 Y CN2883694 Y CN 2883694Y
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- cam
- crankpin
- constant volume
- bearings
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/36—Modified dwell of piston in TDC
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses an internal-combustion engine of constant volume combustion which can be combusted in a completely constant volume state; wherein, a hole of a crankshaft pin on the big end of a connecting rod is long-shaped; a sliding axle sleeve for the up-and-down sliding of the crankshaft pin in the long hole is arranged in the hole, and the inside of the connecting rod are provided with two bearings up and down; the middle part of the crankshaft pin is cam-shaped; the two bearings in the connecting rod are rotated around the cam which is on the middle part of the crankshaft pin; both sides of the connecting rod big end are made correspondingly cam-shaped; a central rotary disc is arranged on each side of the crank center. When the piston reaches the top dead center, the cams on both sides of the connecting rod and the central rotary disc are force-applied, realizing completely constant-volume function, and at the point the two bearings in the connecting rod and the cam on the middle part of the crankshaft pin are not force-applied. After completion of the constant-volume procedure, the cams on both sides of the connecting rod are gradually separated from the central rotary disc, and the bearings in the connecting rod and the crankshaft pin along with the cam of the crankshaft pin are force-applied and output the power. The utility model can improve the effective power of the same internal-combustion engines by two to five times.
Description
Technical field
The utility model relates to a kind of internal-combustion engine, particularly relates to a kind of internal-combustion engine that burns under the state of complete constant volume.
Background technique
In existing four-stroke reciprocating internal combustion, piston is in a kind of to-and-fro motion state all the time, and piston enters compression stroke again in lower dead center moment during air inlet, thereby the cylinder body volume does not have the more combustible gas of more time inspiration when maximum.Piston enters intake stroke again to top dead center moment during exhaust, thereby there is not more time to allow waste gas farthest discharge when making the volume of cylinder minimum, these situations finally all influence more combustible gas and enter cylinder, make the raising of power be subjected to certain restriction.The inlet and outlet of existing two-stroke internal-combustion engine are all carried out near lower dead center, but also have same problem.Mixed gas is short period of combustion in pressure maximum, volume minimum, and piston is descending this moment, makes incomplete combustion, the exhaust gas concentration height, and work doing efficiency is low.
Existing reciprocating internal combustion engine is in order to improve performance, all in premature ignition or the oil spout in various degree of piston arrives budc, purpose is in order to allow mixed gas accomplish the faster, more complete of combustion in the combustion chamber volume minimum, also to obtain bigger power output simultaneously.Also produced certain negative effect but do like this: because of premature ignition, in-cylinder pressure sharply raises, and has stoped piston stroking upward, has increased the compression negative work, thereby produces strong phenomenon of detonation, rough running.This contradiction exists in existing reciprocating internal combustion engine all the time, has therefore consumed a large amount of power, has strengthened the wearing and tearing of cylinder body, piston, piston ring and crankshaft rod system.Also have when the swelling pressure are maximum, crank angle is little, and effectively arm strength is little, and output power is low, and crank angle quickens slow, and moment of torsion is little, and when crank angle increased, piston was descending a lot, and this moment, maximum pressure obviously descended, thereby had had a strong impact on the output of power.
Summary of the invention
The purpose of this utility model is exactly that air inlet in the prior art is insufficient in order to improve, exhaust not thoroughly, low problem provided a kind of internal-combustion engine that under the state of constant volume fully, burns of the little output power of crank angle when work done pressure is maximum in incomplete combustion and compression negative work that causes because of premature ignition or oil spout and the cylinder.
The utility model provides a kind of constant volume combustion internal combustion engine, comprises fuel supply system, ignition system, cooling system, lubrication system, crankshaft rod system etc., it is characterized in that:
The shape of corresponding cam is processed in the both sides of the connnecting rod big end in the crankshaft-link rod, the hole of the crankpin on the connnecting rod big end is microscler, the sliding shaft sleeve that slides up and down for crankpin is installed in the inside in this hole, connecting rod inside is provided with by in the bearing shaft assembling, following two bearings, the intermediate section of crankpin is processed into the shape of cam, crankpin install the back with connecting-rod bolts with connecting rod assembly, respectively be provided with a center runner in the center of two cranks, two cranks are made up by the bent axle pin-and-hole on the crank by crankpin, and the F point of the cam in the middle of the crankpin is the solstics apart from crank center.
The center runner motion on crank of the cam rotation of two bearings on crankpin of connecting rod the inside during work done, the cam of connecting rod both sides realizes constant volume and work done program by the routing motion between them.
The beneficial effect that the utility model is compared with prior art had is as follows:
(1) in Figure 20 piston stroke plotted curve, N is a prior art, and when M was 23 ° of crank angles of piston constant volume, L was that 45 ° of crank angles of piston constant volume are right, when K is 60 ° of crank angles of piston constant volume.Following form be stroke be existing reciprocating internal combustion engine and the same machine of 49.5mm under different constant volume angles, piston walks to the required crank angle amount contrast table of same position:
| Existing crank angle amount | The crank angle amount that constant volume is later | ||
| 23 ° of constant volumes | 45 ° of constant volumes | 60 ° of |
|
| 15° | 10° | 3° | 1° |
| 20° | 12° | 4° | 2° |
| 25° | 15° | 7° | 5° |
| 30° | 18° | 9° | 7° |
| 35° | 22° | 12° | 9° |
| 40° | 25° | 15° | 12° |
| 45° | 30° | 18° | 14° |
| 50° | 34° | 21° | 17° |
| 55° | 38° | 25° | 20° |
| 60° | 42° | 29° | 23° |
| 65° | 46° | 33° | 27° |
| 70° | 51° | 37° | 31° |
| 75° | 57° | 41° | 34° |
| 80° | 61° | 44° | 37° |
By Figure 20 and go up the contrast of table to the crank angle amount after prior art and the different constant volume angles, can learn: when prior art crank angle amount walks to same position at 15 °-80 scope inner carriers, average bent axle torque is 1.5 times of prior art during constant volume 23, average bent axle torque is 2.8 times of prior art during constant volume 45, and average bent axle torque is 4.4 times of prior art during constant volume 60.
(2) because of the constant volume effect of constant volume combustion internal combustion engine piston of the present utility model in top dead center and lower dead center, but the reciprocating four-stroke internal combustion engine air inlet and exhaust valve is time-delay closing all, help piston mixed gas period of intake when lower dead center cylinder body volume is maximum like this and prolong, air inlet is more abundant; Hour make the exhausting waste gas time lengthening at top dead center cylinder body volume, make that waste gas row's is more complete.The intake and exhaust of two-stroke internal-combustion engine are all near lower dead center, so constant volume combustion internal combustion engine piston of the present utility model possesses with the quartastroke engine similar effects when the lower dead center constant volume.
(3) can shorten the premature ignition time greatly, thereby significantly reduce or thoroughly eliminated the loss of the compression negative work that causes because of premature ignition, also eliminate the phenomenon of detonation that this is arranged and produce.
(4) because of combustible gas is that piston burns under the constant volume state of top dead center volume minimum, more complete so velocity of combustion is faster, make the concentration of toxic emission lower.
(5),, export for power and laid in more energy so cylinder interior pressure can sharply raise because of combustible gas is that piston burns under top dead center constant volume state.
Description of drawings
Fig. 1 is the connecting rod front view;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the H-H sectional view among Fig. 2;
Fig. 4 is the side view of crankpin and cam;
Fig. 5 is that the B of Fig. 4 is to view;
Fig. 6 is the sliding shaft sleeve figure of crankpin;
Fig. 7 is the side view of Fig. 6;
Fig. 8 is the side view of the runner up and down in the connecting rod;
Fig. 9 is the side view of Fig. 8;
Figure 10 is the crank on the motorcycle and the front view of center runner;
Figure 11 is the side view of Figure 10;
Figure 12 be piston during to top dead center the connecting rod cam with the center runner on the crank and crankpin key plan in connecting rod slotted hole the inside;
Figure 13 be piston when top dead center constant volume program is finished the connecting rod cam with center runner on the crank and crankpin the key plan in the connecting rod slotted hole;
Figure 14 is the phase diagram of piston two bearings in the connecting rod and crankpin cam when top dead center;
Figure 15 be piston when top dead center constant volume program is finished two bearings in the connecting rod with the phase diagram of crankpin cam;
Figure 16 be piston when lower dead center the connecting rod cam with the center runner on the crank and crankpin key plan in connecting rod slotted hole the inside;
Figure 17 be piston when lower dead center is finished the constant volume program connecting rod cam with the center runner on the crank and crankpin key plan in connecting rod slotted hole the inside;
Two bearings when Figure 18 is the piston arrives lower dead center in the connecting rod are with the phase diagram of crankpin cam;
Figure 19 be piston when lower dead center is finished the constant volume program two bearings in the connecting rod with the phase diagram of crankpin cam;
Figure 20 is that piston stroke is the stroke curve figure of 49.5mm.
Embodiment
Below just in conjunction with the accompanying drawings embodiment of the present utility model is described in further detail.Describe for convenient, constant volume combustion internal combustion engine of the present utility model is that the basis describes with the crankshaft-link rod of 4 stroke motorcycle internal-combustion engine.
In the crankshaft-link rod of constant volume combustion internal combustion engine of the present utility model, the shape of corresponding cam 4 is arranged in the both sides of connnecting rod big end, and as shown in Figure 1, 2, cam 4 is a disk cam mechanism.Crankpin axis hole 6 on the connecting rod 1 is arranged to microscler, shown in Fig. 1,3.The intermediate section of crankpin 11 is arranged to the shape of cam 10, and shown in Fig. 4,5, cam 10 is a disk cam mechanism.16 shape as shown in Figure 3 is arranged in the connecting rod the inside, so that the cam 10 on the crankpin 11 can be free movable.Also be provided with upper and lower two bearings 8,9 in the connecting rod, these upper and lower two bearings 8,9 are assemblied in respectively on upper and lower two bearing shaft 2,7, as shown in Figure 3.Also can with upper and lower two bearings 8,9 and bearing shaft 2,7 be arranged to bearing and bearing shaft is two runners 5 of one, shown in Fig. 8,9.Two of crankpin 11 is furnished with sliding shaft sleeve 12, shown in Fig. 6,7.Also sliding shaft sleeve 12 can be set and adopt the mode of in connecting rod slotted hole 6, directly sliding by crankpin 11.Two cranks 14 are identical with the crank on the existing common 4 stroke motorcycle, and the center that crank is provided with 15, two cranks 14 of bent axle pin-and-hole identical on the existing crank respectively is provided with a center runner 13, shown in Figure 10,11.
Its overall installation program is: earlier two bearings 8,9 in the connecting rod are installed by bearing shaft 2,7, again crankpin 11 is contained in the connecting rod, use connecting-rod bolts 3 with connecting rod assembly then, if the connecting rod of assembled crankshaft, also can adopt and prolong H-H as Fig. 2 and after cutting processing open, carry out the way that Assembly gets up again; Then two crankpin sliding shaft sleeves 12 are contained on the crankpin 11, again with two cranks 14 of the center runner 13 that assembles by there being crankpin 11 firmly by 15 assemblings of the bent axle pin-and-hole on the crank.Wherein, be as the criterion with the footstalk center during built-up crankshaft pin 11, the F point on the cam 10 in crankpin 11 stage casings is the solstics, and D is a closest approach.
Its work done program is: when the piston arrives top dead center, on the corresponding cam 4 in connecting rod both sides A ' with crank on center runner 13 begin to contact, the top of slotted hole 6 the insides of crankpin 11 on connecting rod, as shown in figure 12; Two bearings 8,9 of connecting rod the inside and the cam 10 residing situations on the crankpin stage casing are as shown in figure 14 at this moment; This moment, bent axle was rotated further under effect of inertia in the direction of the clock, and the pressure that this back piston transmits by connecting rod is supported by the center runner 13 that A ' B ' section arc of cam 4 tops of connecting rod both sides reaches on the crank entirely.
Meanwhile the cam 10 of two bearings 8,9 in the connecting rod on crankpin 11 rotates, and the GF section arc of cam 10 tops on the bearing 8 in the connecting rod and the crankpin separates simultaneously.
When bent axle turned over several angle and finishes the constant volume program, the A ' B ' of cam 4 tops of connecting rod both sides section arc had been spent the pressure spot by the center runner 13 on the crank, and this moment, crankpin 11 was in the bottom of slotted hole 6 the insides of connecting rod, as shown in figure 13; Two bearings 8,9 in the connecting rod and the cam 10 on the crankpin situation that turned to Figure 15 meanwhile.This moment, the cam 4 of connecting rod both sides began to separate with center runner 13 on the crank, and the while piston all acts on crankpin by the bearing in the connecting rod 8 and above its cam 10, as shown in figure 15, so far finished the once fixed capacity program by the pressure of connecting rod.
Its constant volume corner amount is to decide by the setting to the cam 10 in the cam 4 of connecting rod both sides and crankpin stage casing.When the piston arrives lower dead center, its constant volume principle and the piston constant volume principle when top dead center is basic identical, at this moment, and because of the distance of connecting rod small end central point and center runner 13 constant volume fully that changes.But compared with prior art, piston stroking upward delays much have the effect of similar constant volume equally, and the position of the cam 4 of connecting rod both sides and 13 residing situations of the center runner on the crank and slotted hole 6 the insides of crankpin 11 on connecting rod as shown in figure 16 at this moment.
When piston when lower dead center is finished the constant volume program, the cam 4 of connecting rod both sides and the 13 residing situations of the center runner on the crank and the position of crankpin 11 in connecting rod slotted hole 6 are as shown in figure 17.
When piston when laying stop, two bearings 8,9 in the connecting rod and the state of the cam 10 on the crankpin 11 are as shown in figure 18.
When piston when lower dead center is finished the constant volume program, two bearings 8,9 in the connecting rod and the state of the cam 10 on the crankpin 11 are as shown in figure 19.
As mentioned above, in the work done process, piston is during to top dead center, finishes the constant volume function by the A ' B ' section arc of cam 4 tops of connecting rod both sides and the routing motion of center runner 13.Piston is during to lower dead center, finishes constant volume function in lower dead center by the routing motion of the AB section arc of cam 4 tops and center runner 13.AB ' section the arc of cam 4 tops and BA ' section arc in the work done process and center runner 13 be discontiguous all the time, the needs that it just is used for structure are provided with.The routing motion of two bearings 8,9 up and down in the connecting rod and the cam 10 in crankpin stage casing is used for work done and sealed.
Crankshaft ﹠ connecting of the present utility model is applicable to that too the connecting rod other end need be in certain crank angle mechanism of ending decided at the higher level but not officially announced, as press machine and other need be in certain crank angle follow procedure end the equipment of work done surely.
Claims (3)
1, a kind of constant volume combustion internal combustion engine, it comprises fuel supply system, ignition system, lubrication system, crankshaft rod system etc., it is characterized in that:
The shape of corresponding cam (4) is processed in the both sides of the connnecting rod big end in the crankshaft-link rod, the hole (6) of the crankpin on the connnecting rod big end (11) is microscler, the sliding shaft sleeve (12) that slides up and down for crankpin (11) is installed in the inside of this hole (6), connecting rod inside is provided with by bearing shaft (2,7) on assembling, following two bearings (8,9), the intermediate section of crankpin (11) is processed into the shape of cam (10), crankpin installs the back and uses connecting-rod bolts (3) with connecting rod assembly, respectively be provided with a center runner (13) in the center of two cranks (14), two cranks (14) are made up by the bent axle pin-and-hole (15) on the crank by crankpin (11), and the F point of the cam (10) in the middle of the crankpin (11) is the solstics apart from crank center.
2, as claims 1 described constant volume combustion internal combustion engine, it is characterized in that: crankshaft-and-connecting-rod can be knockdown, also can be all-in-one-piece.
3, as claims 1 described constant volume combustion internal combustion engine, it is characterized in that: described bearing shaft (2,7) and bearing (8,9) are the form of two runners (5) of one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201078245U CN2883694Y (en) | 2005-06-01 | 2005-06-01 | Constant volume burning I.C. engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201078245U CN2883694Y (en) | 2005-06-01 | 2005-06-01 | Constant volume burning I.C. engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2883694Y true CN2883694Y (en) | 2007-03-28 |
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ID=37956756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201078245U Expired - Fee Related CN2883694Y (en) | 2005-06-01 | 2005-06-01 | Constant volume burning I.C. engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2883694Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832174A (en) * | 2010-03-26 | 2010-09-15 | 北京工业大学 | Gas fuel constant volume combustion chamber capable of being internally installed with diaphragm plate |
| WO2018142097A1 (en) * | 2017-02-02 | 2018-08-09 | Combustion Order Ltd | Improvements to operation of engines |
-
2005
- 2005-06-01 CN CNU2005201078245U patent/CN2883694Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832174A (en) * | 2010-03-26 | 2010-09-15 | 北京工业大学 | Gas fuel constant volume combustion chamber capable of being internally installed with diaphragm plate |
| CN101832174B (en) * | 2010-03-26 | 2012-10-31 | 北京工业大学 | Gas fuel constant volume combustion chamber capable of being internally installed with diaphragm plate |
| WO2018142097A1 (en) * | 2017-02-02 | 2018-08-09 | Combustion Order Ltd | Improvements to operation of engines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070328 |