CN200999664Y - Internal combustion engine cylinder capable of self-adjusting combustion chamber gas pressure - Google Patents
Internal combustion engine cylinder capable of self-adjusting combustion chamber gas pressure Download PDFInfo
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- CN200999664Y CN200999664Y CNU2007201233112U CN200720123311U CN200999664Y CN 200999664 Y CN200999664 Y CN 200999664Y CN U2007201233112 U CNU2007201233112 U CN U2007201233112U CN 200720123311 U CN200720123311 U CN 200720123311U CN 200999664 Y CN200999664 Y CN 200999664Y
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- 238000002485 combustion reaction Methods 0.000 title description 22
- 238000010304 firing Methods 0.000 claims abstract description 21
- 239000002360 explosive Substances 0.000 claims abstract description 18
- 210000000707 wrist Anatomy 0.000 claims description 30
- 241001125879 Gobio Species 0.000 claims description 18
- 239000000203 mixture Substances 0.000 abstract description 29
- 239000000446 fuel Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000007667 floating Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000007599 discharging Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 208000017667 Chronic Disease Diseases 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The utility model discloses an explosive motor cylinder with adjustable air pressure in firebox, which comprises an engine cylinder and an engine piston. The engine piston is internally provided with a spring which is arranged between the inner top of the engine piston and the an engine piston pin or between the engine piston pin and a connecting rod small head; the engine piston and the connecting rod small head are connected with each other in floating through the engine piston pin. The utility model ensures that the compress pressure and the burning expanding pressure of the engine gas are stated in the designed optimum under various working conditions to make the firing device applies the weak mixture under various working conditions, thus maintaining the air-fuel delivery ratio of the compressing ignition engine in best under any working condition. The utility model saves the fuel and integrates the advantages of the firing device such as stable and soft operation, little noise, small vibration, light machine and low emission of N X and the compressing ignition engine as high efficient, capability of adapting to various fuels and low Hc and CO emission.
Description
Technical field the utility model relates to a kind of explosive motor, the self-adjustable explosive motor cylinder of particularly a kind of firing chamber gas pressure.
The toxic emission of background technique internal-combustion engine is mainly derived from 3 aspect: Nx, HC, and CO, wherein most of HC, CO mainly result from the combustion regime that adds rich mixture required when lighting machine low-power and high-power running, and so and oil consumption.And Nx mainly results from the oxygen-enriched combusting state of high temperature, high pressure, mainly comes from compressing ignition engine.In the seventies in last century, people have experienced after the impact of Los Angeles photochemical smog incident and oil crisis, environment protection emission and Research on Saving Energy work have been strengthened, also obtained more achievement, lighting on the machine in order to reduce HC, the discharging of CO, mainly taked underpressure layered combustion technology, strong swirl flow combustion technology and a large amount of in recent years EFI Carburetor that adopts the mixed gas that can form accurate air fuel ratio and good atomization quality, make HC, the discharging of CO has reduced much, but it is low that above-mentioned means can not fundamentally solve, high power is required adds rich mixture, its effect also is limited, in the running of lighting machine, can be divided into three operating mode stages: one, low speed small power; Two, middling speed economic power; Three, high-speed high-power.Wherein two is the selected power phase of design, its discharging and oil consumption all are best comparatively speaking, phase I, traditional viewpoint was thought, because of closed throttle, fresh air enters few, residual gas relative amount height is had to add rich mixture and just can be kept normal combustion, this is held in person different opinions, in practice, the motor of bad ignition, after through circulation several times, waste gas content should be seldom, but send out in the same old way and do not fire fire, generally all be the mixture pressure deficiency after tested, after rering and encapsulation process, the problems referred to above are resolved.The mixture pressure deficiency is only the main cause that will add rich mixture as can be seen.I am once in so excessively experience, and the weak mixture that can not light just can be lighted after pressure is raised to certain value at normal temperatures and pressures, and pressure is high more, easy more lighting, and combustion speed is also fast more.For a short time cause and the mixture pressure deficiency is the air inlet restriction charge, this lights in the machine in tradition is insurmountable.When the high-power running of high engine speeds, the height combustion speed that adapts for the piston of obtaining with high-speed motion, also must add rich mixture, this moment is because of the mixture pressure height,: the tendency that has more increased pinking, this is again chronic illness of conventional engines system, and its basic reason still is the enriching of mixed gas, and EFI can't resolve this problem.Therefore will solve the HC of the machine of lighting, the discharging of CO and reduction oil consumption be idea in addition.In compressing ignition engine, the high compression ratio pressure that adopts for the fuel oil of lighting spirt causes the burning of the High Temperature High Pressure oxygen enrichment of the phase of burning, is the high yield environment of Nx, this is considered to compressing ignition engine born determines defective, has caused also that compressing ignition engine work is slightly quick-fried, noise big, vibration is big, power to weight ratio is low.
In sum, in lighting machine, if in low-power, slow-revving stage increasing compression ratio, make mixture pressure be in the pressure the same with economic speed, can use weak mixture in the same old way, also make mixture pressure higher in the high-speed high-power stage to increase compression ratio, still use weak mixture and (also can only use weak mixture, just can avoid knocking combustion), can reach the required combustion speed of piston of high-speed motion (tradition is lighted the high-power rich mixture that adds of machine and is also had another layer meaning in the same old way, that is exactly maximum pressure and the power done time that increases combustion gas, obtain big power output, this mixed gas also is the power mixed gas), we improve mixture pressure, and both having made is the weak mixture that uses, and its firing pressure also is very high, the expansion ratio of its expansion working is bigger, remedies dense with the higher thermal efficiency, the power that weak mixture brings poor.
In compressing ignition engine, Nx is lowered, the firstth, gasoline air mixture ratio is controlled at optimum, avoid causing oxygen-enriched combusting, the 2nd, High Temperature High Pressure is lowered.Above-mentioned two kinds of hot machines circulation all involves stress problems: one, light confidential asking in each power phase, keep the mixture pressure of high adaptation condition, can use weak mixture, reach the purpose of energy-conserving and environment-protective.Two, compressing ignition engine then requires to reduce peak temperature and reduces surge pressure, and only enters the air inflow (air inlet restriction) that is complementary with power fuel under the condition that satisfies the compression ignite fuel oil.All problems concentrates in together---require to have controllable mixture pressure and gaseous-pressure.
The summary of the invention the purpose of this utility model is exactly at the deficiencies in the prior art, provide a kind of displacement that produces with the relative connecting rod of engine piston to change combustion chamber volume, with the self-adjustable explosive motor cylinder of firing chamber gas pressure of the size of adjustments of gas pressure.
For achieving the above object, the utility model adopts following technological scheme:
The self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure, comprise cylinder, engine piston, be provided with spring in described engine piston inside, spring is located at engine piston inside and is pushed up between last and the engine gudgeon pin, or be located between engine gudgeon pin and the connecting rod small end, engine piston floats by engine gudgeon pin with connecting rod small end and is connected.Because floating with connecting rod small end, engine piston is connected, can move up and down certain distance between piston and the connecting rod, under the situation of the elastic parameter of having fixed spring, the elastic force of spring can guarantee under various working staties, the compression pressure of engine gas and combustion expansion pressure are in artificial selected the optimum state, make the machine of lighting at various operating mode burning weak mixtures; And make the air fuel ratio of compressing ignition engine remain on optimum value, and the burning peak pressure is lowered in any operating mode.
A kind of structure of the self-adjustable explosive motor cylinder of a kind of firing chamber of the utility model gas pressure is, on the inner top of described engine piston and be provided with spring between the engine gudgeon pin, spring withstands on the wrist pin, the connection part of piston skirt wrist pin has twice rectangular cotter way, and the two ends of wrist pin place in the cotter way.
Described wrist pin two is square, and the centre is the garden cylindricality, and the garden shape in the middle of the wrist pin partly is contained in the hole, garden of connecting rod small end, and the square of wrist pin two ends places in the cotter way.
Described spring is a snare shape leaf spring, and the position that snare shape leaf spring matches with connecting rod small end is provided with rectangular aperture, and the top of connecting rod small end is placed in one.
A kind of structure of the self-adjustable explosive motor cylinder of a kind of firing chamber of the utility model gas pressure is, between described engine gudgeon pin and connecting rod small end, be provided with spring, the position that connecting rod small end is connected with wrist pin is a U-shaped, U-shaped the right and left has square cotter way, and wrist pin passes two ends, the cotter way left and right sides and is slidingly fitted in the pin-and-hole of piston skirt; Spring place the connecting rod small end U-shaped the intermediate piston pin below.
At the spring described in the utility model is snare shape leaf spring, cross bar spring, bow template spring, a kind of in multilayer cross bar spring, the multilayer cambered plate spring.
The self-adjustable explosive motor cylinder of a kind of firing chamber of the present utility model gas pressure, can guarantee under various operating modes, the compression pressure of engine gas and combustion expansion pressure are in artificial selected the optimum state, make the machine of lighting use weak mixture in various operating modes, make the air fuel ratio of compressing ignition engine remain on optimum value in any operating mode, above-mentioned two advantages are out of the question in traditional internal-combustion engine.Because good combustion condition and surge pressure and temperature when having reduced burning, make Nx in the waste gas, Hc, the content of CO reduces in a large number, and therefore fuel-economizing, this explosive motor cylinder can collect and light the circuit advantage: turn round Nx discharging and compression ignite circuit advantage steadily soft, that noise is little, vibration is little, body is light, low: efficient, can adapt to various fuel, low Hc, CO is thrown into the whole body.
Description of drawings Fig. 1 is a structural representation of the present utility model
Fig. 2 is the structural representation of another mode of execution of the present utility model
Fig. 3 is the fundamental diagram of the utility model figure
Embodiment is further described the utility model below in conjunction with accompanying drawing
Embodiment 1
Referring to Fig. 1: the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure, comprise cylinder 1, engine piston 2, be provided with spring 4 in described engine piston 2 inside, spring 4 is located at engine piston 2 inner tops between last and the engine gudgeon pin 3, or be located between engine gudgeon pin 3 and the connecting rod small end 5, engine piston 2 floats by engine gudgeon pin 3 with connecting rod small end 5 and is connected.
On described engine piston 2 inner tops and be provided with spring 4 between the engine gudgeon pin 3, spring 4 withstands on the wrist pin 3, and the connection part of piston 2 skirt section wrist pins 3 has twice rectangular cotter way 6, and the two ends of wrist pin 3 place in the cotter way 6.
Described wrist pin 3 two are square, and the centre is the garden cylindricality, and the garden shape in the middle of the wrist pin 3 partly is contained in the hole, garden of connecting rod small end 5, and the square of wrist pin 3 two ends places in the cotter way 6.
Described spring 4 is a snare shape leaf spring, and the position that snare shape leaf spring 4 matches with connecting rod small end 5 is provided with rectangular aperture 7, and the top of connecting rod small end 5 is placed in one.
Working principle: the skirt section symmetrical position of seeing Fig. 1, piston 2 has twice rectangular slot 6, wrist pin 3 two be with piston 2 on rectangular groove 6 corresponding square (also can be the guide in garden in the foreign side), can inside move up and down, between wrist pin 3 and piston 2 inner bottom surfaces, a spring 4 is arranged, this spring also can be one or the device of two cross bar springs and other energy ammunition feed power, as hydraulic pressure, garden post spring etc.The inner bottom surface of piston 2 is simultaneously withstood on the two sides of spring 4, one side withstands on the wrist pin 3, former on wrist pin 3 two of connecting rod small end 5 position occupied to cut, so that spring 4 can be pressed in (leaf spring 4 is if directly be pressed in the two-part that then needn't cut connecting rod small end 5 on the connecting rod small end 5) on the wrist pin 6 that exposes behind the two-part that cut connecting rod small end 5, the part that the centre of spring 4 can allow connecting rod small end 5 stay.
Referring to Fig. 2: the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure, comprise cylinder 1, engine piston 2, be provided with spring 4 in described engine piston 2 inside, spring 4 is located at engine piston 2 inner tops between last and the engine gudgeon pin 3, or be located between engine gudgeon pin 3 and the connecting rod small end 5, engine piston 2 floats by engine gudgeon pin 3 with connecting rod small end 5 and is connected.
Be provided with spring 4 between described engine gudgeon pin 3 and connecting rod small end 5, the position that connecting rod small end 5 is connected with wrist pin 3 is a U-shaped, and U-shaped the right and left has square cotter way 6, and wrist pin 3 passes two ends, cotter way 6 left and right sides and is slidingly fitted in the pin-and-hole in piston 2 skirt sections; Spring 4 place connecting rod small end 5U shape intermediate piston pin 3 below.
Working procedure: see Fig. 3: first width of cloth figure is a bottom dead center position among Fig. 3, and air inlet finishes, the state when compression stroke begins, this moment spring 4 piston 2 and wrist pin 3 are backed down mutual spacing in the direction of arrows is zero.Second width of cloth figure is a top dead center position, and in fact the state when compression stroke is over has just lighted a fire the oil spout fuel gas buring before this position, for saying something the branch narration of coming.On the top of piston 2, the expansive force of compressed gas, piston 2 down cause the connecting rod amount of moving down very little in pressure spring 4 position that moved down certain distance bent axle this moment, can be considered as not having displacement basically.The elastic force of the pressure=spring 4 of pressurized gas in the firing chamber=we set the compression pressure that needs, this measure can make motor no matter be in which kind of operating mode, the air inlet charge many with can both guarantee that the gas pressure in the firing chamber is controlled at selected optimum value automatically less, be to light machine, this value can guarantee that at any power, idling also can use weak mixture.High-power operating condition air inlet charge is many when being in, and the distance that piston moves down is bigger, and the rebounding force that spring 4 provides is also bigger, and the pressure of burning indoor gas is also big more and equal rebounding force.The Large-power High-Speed running of our requirement that Here it is still uses weak mixture, and improves combustion speed to improve pressurized gas pressure.Too high according to reason pressure may cause knocking combustion, but because of using weak mixture, has got rid of the possibility of pinking.If compressing ignition engine, the compressed air pressure that can light the spirt fuel oil exactly of spring 4 settings this moment, no matter this pressure air inlet charge is many and few, can both maintain desirable value automatically, this function has been arranged, and we can adopt by the mode of power throttle air inlet (traditional compressing ignition engine is out of the question), only enter the air quantity that forms optimal air-fuel ratio with fuel oil, the situation of oxygen enrichment has not existed during burning, and the generation of Nx will reduce in a large number.Owing to do not heat too much air, the thermal efficiency also will improve.Owing to air inflow is pressed power and decided, the required compression work of motor is also pressed the power increase and decrease, and this function can make flywheel gently little, this has not only alleviated the weight of machine, the time that engine power raises or reduction is quickened is shortened, make motor improve power to weight ratio in higher speed range running.
Situation (in fact should be before top dead center) when the 3rd width of cloth figure is the igniting oil spout, this moment, powerful pressure of explosion pushed away piston 2 downwards, because the connecting rod amount of moving down that bent axle corner at this moment forms seldom, moving down of piston 3 can only realize with pressure spring 4, this is second point of spring 4 controls, first point is a control compression ratio pressure, the design of spring will be satisfied 2 pressure and require the distance that realizes that piston 3 moves down, we are set in any value with the elastic force of spring 4, gaseous-pressure in the firing chamber also just equals this value, we have also obtained following benefit in addition: if knocking combustion has taken place this moment, piston 2 can move down certain distance, pressure spring 4 is stored in the high pressure energy that pinking produces in the spring 4, alleviate impact force to body and stressed member, and in expansion stroke subsequently, power is disengaged acting, turn bane into boon.The outburst of this moment is pressed up to 5-10MPa/cm ' in compressing ignition engine, is to light more than a times of machine, in traditional compressing ignition engine, and the body heaviness, strong vibration, sharp-pointed noise, a large amount of generations of Nx promptly derive from this.This is called the born chronic illness of compressing ignition engine.But because application of the present invention, this chronic illness has obtained radical cure.The present invention lowers the peak value of high temperature, high pressure to increase the method for combustion chamber volume, has not only reduced the generation of Nx, also makes engine mildness soft, and noise is low, vibrates for a short time, and body is light and handy.
Can obtain following conclusion from top narration: the present invention is used for internal-combustion engine, can use the working method of compressing ignition engine, keep the variation of its advantage high efficiency, fuel source, low HC, the CO discharging reaches the work effect of the machine of lighting, keep its advantage, turn round steadily soft, noise is low, vibration is little, body is light and handy, Nx generates fewly, for it and traditional point, compression ignite circulation are made a distinction, I am called it " bullet control circulation ".
The 4th width of cloth figure is an expansion stroke, an expansion working process that is different from traditional combustion engine is arranged here, combustion gas is when 2 works done of promotion piston are descending, when pressure is lower than the elastic force of spring 4, spring 4 will flick the power that is stored in spring 4 is disengaged acting, the downstream rate of connecting rod is that the speed of piston 2 adds the speed that spring 4 flicks connecting rod, make speeding up that connecting rod moves down, this moment, the corner of bent axle increased, just requiring connecting rod that big rate of descent is arranged, this perfectly in harmony, engine torque is increased, its service performance is more suitable for connecting rod, is better than conventional engines.Next motor is exactly exhaust stroke, aspirating stroke Fig. 1, so periodic duty.
Claims (6)
1, the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure, comprise cylinder (1), engine piston (2), it is characterized in that: be provided with spring (4) in described engine piston (2) inside, spring (4) is located at engine piston (2) inside and is pushed up between last and the engine gudgeon pin (3), or be located between engine gudgeon pin (3) and the connecting rod small end (5), engine piston (2) floats by engine gudgeon pin (3) with connecting rod small end (5) and is connected.
2, the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure according to claim 1, it is characterized in that: upward and between the engine gudgeon pin (3) be provided with spring (4) on the inner top of described engine piston (2), spring (4) withstands on the wrist pin (3), the connection part of piston (2) skirt section wrist pin (3) has twice rectangular cotter way (6), and the two ends of wrist pin (3) place in the cotter way (6).
3, the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure according to claim 1, it is characterized in that: between described engine gudgeon pin (3) and connecting rod small end (5), be provided with spring (4), the position that connecting rod small end (5) is connected with wrist pin (3) is a U-shaped, U-shaped the right and left has square cotter way (6), and wrist pin (3) passes cotter way (6) two ends, the left and right sides and is slidingly fitted in the pin-and-hole in piston (2) skirt section; Spring (4) place connecting rod small end (5) U-shaped intermediate piston pin (3) below.
4, according to claim 1, the self-adjustable explosive motor cylinder of 2 or 3 described any firing chamber gas pressures, it is characterized in that: described spring (4) is snare shape leaf spring, cross bar spring, bow template spring, a kind of in multilayer cross bar spring, the multilayer cambered plate spring.
5, the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure according to claim 2, it is characterized in that: described wrist pin (3) two is square, the centre is cylindrical, circular portion in the middle of the wrist pin (3) is contained in the circular hole of connecting rod small end (5), and the square of wrist pin (3) two ends places in the cotter way (6).
6, the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure according to claim 2, it is characterized in that: described spring (4) is a snare shape leaf spring, the position that snare shape leaf spring (4) matches with connecting rod small end (5) is provided with rectangular aperture (7), and the top of connecting rod small end (5) is placed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201233112U CN200999664Y (en) | 2007-01-09 | 2007-01-09 | Internal combustion engine cylinder capable of self-adjusting combustion chamber gas pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201233112U CN200999664Y (en) | 2007-01-09 | 2007-01-09 | Internal combustion engine cylinder capable of self-adjusting combustion chamber gas pressure |
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| Publication Number | Publication Date |
|---|---|
| CN200999664Y true CN200999664Y (en) | 2008-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201233112U Expired - Fee Related CN200999664Y (en) | 2007-01-09 | 2007-01-09 | Internal combustion engine cylinder capable of self-adjusting combustion chamber gas pressure |
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| Country | Link |
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| CN (1) | CN200999664Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508046A (en) * | 2016-01-20 | 2016-04-20 | 吉林大学 | Piston with variable compression ratio |
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2007
- 2007-01-09 CN CNU2007201233112U patent/CN200999664Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508046A (en) * | 2016-01-20 | 2016-04-20 | 吉林大学 | Piston with variable compression ratio |
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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: 20080102 Termination date: 20110109 |