CN1558095A - Hydraulic control pressure accumulation room open burning system - Google Patents
Hydraulic control pressure accumulation room open burning system Download PDFInfo
- Publication number
- CN1558095A CN1558095A CNA2004100210839A CN200410021083A CN1558095A CN 1558095 A CN1558095 A CN 1558095A CN A2004100210839 A CNA2004100210839 A CN A2004100210839A CN 200410021083 A CN200410021083 A CN 200410021083A CN 1558095 A CN1558095 A CN 1558095A
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- pressure
- valve
- accumulating chamber
- pressure accumulating
- piston
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- 238000009825 accumulation Methods 0.000 title 1
- 238000009275 open burning Methods 0.000 title 1
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000010304 firing Methods 0.000 claims description 15
- 239000003921 oil Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 239000002737 fuel gas Substances 0.000 abstract 1
- 239000010705 motor oil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The present invention is one kind of combustion system with hydraulically controlled pressure accumulating chamber opening and possessing reduced in-cylinder pressure and lowered maximum outbreak pressure, and belongs to the field of internal combustion engine combustion. The combustion system has one pressure accumulating chamber on the cylinder cover and pressure sensor to sense the true pressure inside the combustor, and when the sensed pressure exceeds the preset value, the electronic control unit makes the electromagnetic slide valve operate and the hydraulic cylinder makes the valve to the pressure accumulating chamber open to increase the volume of the combustor abruptly and limit the maximum outbreak pressure of the cylinder. The fuel gas in the pressure accumulating chamber also produces work. The said combustion system makes the engine possess high compression ratio, high combustion efficiency, low oil consumption, etc.
Description
Technical field
The present invention relates to a kind of hydraulic control pressure accumulating chamber unlatching combustion system that reduces the in-cylinder pressure rise rate, reduces maximum outbreak pressure, belong to field of engine combustion.
Background technique
At present, reciprocating internal combustion engine mainly contains two kinds of petrol engine and diesel engines, generally all thinks and can improve efficiency of engine by further raising compression ratio.For petrol engine, compression ratio is all lower, and compression ratio surpasses malcombustions such as 10 easy generation detonations, makes the engine operation instability, decreased performance.And the compression ratio of diesel engine is higher, but along with the further reinforcement of motor, the appearance of high rotating speed, high pressure-charging machine, the mechanical load of motor and heat load increase, also limited the further raising of compression ratio, even be that the reliability that guarantees engine operation can only adopt the compression ratio work of supporting.
Summary of the invention
In order to solve existing petrol engine and the diesel engine compression ratio can not further improve, the inefficient problem of periodic duty, the invention provides a kind of hydraulic control pressure accumulating chamber unlatching combustion system that reduces the in-cylinder pressure rise rate, reduces maximum outbreak pressure, this combustion system can not only guarantee that internal combustion engine is reliable, and performance index also are significantly increased.
The technical solution adopted for the present invention to solve the technical problems is: combustion system is opened by a kind of hydraulic control pressure accumulating chamber, and it is made up of a firing chamber, pressure accumulating chamber and valve group, and the unlatching of the valve in the controllable valve group allows pressure accumulating chamber communicate with the firing chamber or isolates.The hydraulic jack of an open valve has been installed on the above-mentioned valve group, a pressure transducer has been installed on the cylinder head, a CKP is installed on the bent axle, pressure transducer and CKP and electronic control unit are electrically connected, when the pressure in pressure transducer perceives the firing chamber reaches in electronic control unit predefined value, electronic control unit begins to power to magnetic slide valve, make the hydraulic jack fuel feeding of lubricating oil pump on the valve group of motor, opening of valves, allow pressure accumulating chamber communicate with the firing chamber, reduce the pressure in the firing chamber, when CKP perceive bent axle forwarded to the intake stroke end to compression stroke at the beginning, electronic control unit stops to the magnetic slide valve power supply, and magnetic slide valve cuts off to the hydraulic jack fuel feeding, and valve cuts out.
Above-mentioned hydraulic jack is made up of piston rod, piston, piston ring and cylinder body, and cylinder body is provided with oil inlet hole and spill port.At valve is to move upward to open in the scheme of pressure accumulating chamber, and piston rod and valve link into an integrated entity, and seal ring is equipped with in the cylinder body bottom, and oil inlet hole is below piston, and the draining hole is above piston.At valve is to move downward in the scheme of opening pressure accumulating chamber, and oil inlet hole is above piston, and the draining hole is below piston.
The invention has the beneficial effects as follows: owing to the true pressure of using in the pressure transducer perception firing chamber, when pressure surpasses preset value, by electronic control unit by magnetic slide valve work, hydraulic jack makes the opening of valves of closing pressure accumulating chamber, the unlatching of pressure accumulating chamber has increased the volume of firing chamber suddenly, has contained the maximum outbreak pressure of cylinder effectively, in descent of piston cylinder pressure decline process, the combustion gas in the pressure accumulating chamber can participate in work done equally.When testing on 492 petrol engine, compression ratio brings up to 14 from 7, uses gasoline No. 90, and malcombustions such as detonation do not take place, and engine consumption has descended 9.6%, and output power has increased by 14.5%, and the cylinder maximum explosive pressure does not obviously increase.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is that the combustion system schematic diagram is opened by hydraulic control pressure accumulating chamber.
Fig. 2 is the tectonic maps that the hydraulic jack control valve upwardly opens.
Fig. 3 is the A zoomed-in view of Fig. 2.
Fig. 4 is the tectonic maps that the hydraulic jack control valve is opened downwards.
Fig. 5 is the B zoomed-in view of Fig. 4.
Among the figure: 1, cylinder head, 2, cylinder liner, 3, engine piston, 4, the firing chamber, 5, pressure accumulating chamber, 6, valve, 7, pressure transducer, 8, lining, 9, guide sleeve, 10, spring shield, 11, spring seat, 12, spring, 13, piston rod, 14, piston, 15, piston ring, 16, cylinder body, 17, seal ring, 18, spring seat, 19, the taper fixture block, 20, conduit, 21, the motor oil pump, 22, strainer, 23, the motor oil sump, 24, the engine lubrication fuel supply line, 25, magnetic slide valve, 26, electronic control unit, 27, CKP, a, oil inlet hole, b, the draining hole.
Embodiment
Fig. 1 is that the combustion system schematic diagram is opened by hydraulic control pressure accumulating chamber.Among the figure, the indoor combustion-gas pressure of pressure transducer 7 perception engine combustions, when this pressure surpassed preset value, the electrical signal of pressure transducer 7 will allow electronic control unit 26 to magnetic slide valve 25 power supplies, and the cd mouth is connected in magnetic slide valve 25 actions.The lubricating oil pump 21 of motor through strainer 22 from 23 oil suctions of motor oil sump, one the tunnel delivers to lubricating oil at the position that need carry out pressure lubrication through engine lubrication fuel supply line 24, the cd mouth that another road is connected through magnetic slide valve 25 is to the oil inlet hole a of hydraulic jack, force on piston 14, piston rod 13 and the valve 6 and move, open pressure accumulating chamber, internal pressure of combustion chamber is descended.When CKP 27 perceive bent axle forwarded to the intake stroke end to compression stroke at the beginning, electronic control unit 26 stops to magnetic slide valve 25 power supply, magnetic slide valve 25 resets, connect the de mouth, the hydraulic jack pressure release, valve 6 is taken a seat under the effect of spring 12, closes pressure accumulating chamber 5.
In the embodiment shown in Fig. 2,3, form firing chamber 4 by cylinder head 1, cylinder liner 2 and engine piston 3; The valve group that is contained on the cylinder head 1 is made up of valve 6, lining 8, guide sleeve 9, spring shield 10, spring seat 11, spring 12; Hydraulic jack is made up of piston rod 13, piston 14, piston ring 15, cylinder body 16 and seal ring 17.Guide sleeve 9 and spring shield 10 are fixed by bolts on the cylinder head 1; Hydraulic jack is fixed by bolts on the spring shield 10; Pressure transducer 7 is installed on the cylinder head 1, and its pressure perception end communicates with firing chamber 4 through the hole.Cylinder body 16 is provided with oil inlet hole a and draining hole b.When motor oil when oil inlet hole a enters piston 14 cavity of resorptions, the oil pressure active force make piston rod 13, piston 14 and valve 6 overcome spring 12 elastic force and on move, valve 6 is opened.The effect of draining hole b is to allow the oil in this chamber leak into the motor oil sump.
In another embodiment shown in Fig. 4,5, different with a last example is: the valve group that is contained on the cylinder head 1 is made up of valve 6, spring shield 10, spring 12, spring seat 18, taper fixture block 19 and conduit 20; Hydraulic jack is made up of piston rod 13, piston 14, piston ring 15 and cylinder body 16.Spring shield 10 is fixed by bolts on the cylinder head 1, and hydraulic jack is fixed by bolts on the spring shield 10.When motor oil when oil inlet hole a enters piston 14 epicoeles, the piston 14 descending valves 6 that back down.The effect of draining hole b is to allow the oil in this chamber leak into the motor oil sump.
Claims (4)
1. combustion system is opened by a hydraulic control pressure accumulating chamber, it is by a firing chamber (4), pressure accumulating chamber (5) and valve group are formed, the unlatching of the valve in the controllable valve group (6), allow pressure accumulating chamber (5) communicate with firing chamber (4), it is characterized in that: the hydraulic jack that an open valve (6) has been installed on the above-mentioned valve group, a pressure transducer (7) has been installed on the cylinder head (1), a CKP (27) is installed on the bent axle, pressure transducer (7) and CKP (27) are electrically connected with electronic control unit (26), when the pressure in pressure transducer (7) perceives firing chamber (4) reaches in electronic control unit (26) predefined value, electronic control unit (26) beginning is powered to magnetic slide valve (25), make the hydraulic jack fuel feeding of lubricating oil pump (21) on the valve group of motor, valve (6) is opened, allow pressure accumulating chamber (5) communicate with firing chamber (4), reduce the pressure in the firing chamber (4), when CKP (27) perceive bent axle forward to the sixth of the twelve Earthly Branches the intake stroke end to compression stroke at the beginning, electronic control unit (26) stops to power to magnetic slide valve (25), magnetic slide valve (25) cuts off to the hydraulic jack fuel feeding, and valve (6) cuts out.
2. open combustion system according to the described hydraulic control of claim 1 pressure accumulating chamber, it is characterized in that: above-mentioned hydraulic jack is made up of piston rod (13), piston (14), piston ring (15) and cylinder body (16), and cylinder body (16) is provided with oil inlet hole (a) and draining hole (b).
3. open combustion system according to the described hydraulic control of claim 2 pressure accumulating chamber, it is characterized in that; Valve (6) is to move upward to open pressure accumulating chamber (5), and piston rod (13) links into an integrated entity with valve (6), and seal ring (17) is equipped with in cylinder body (16) bottom, and oil inlet hole (a) is in the below of piston (14), and draining hole (b) is in the top of piston (14).
4. open combustion system according to the described hydraulic control of claim 2 pressure accumulating chamber, it is characterized in that: valve (6) is to move downward to open pressure accumulating chamber (5), and oil inlet hole (a) is in the top of piston (14), and draining hole (b) is in the below of piston (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100210839A CN1558095A (en) | 2004-01-16 | 2004-01-16 | Hydraulic control pressure accumulation room open burning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100210839A CN1558095A (en) | 2004-01-16 | 2004-01-16 | Hydraulic control pressure accumulation room open burning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1558095A true CN1558095A (en) | 2004-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100210839A Pending CN1558095A (en) | 2004-01-16 | 2004-01-16 | Hydraulic control pressure accumulation room open burning system |
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| CN (1) | CN1558095A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892901A (en) * | 2010-02-12 | 2010-11-24 | 靳北彪 | Vector multiplication cross engine |
| CN103032178A (en) * | 2011-10-06 | 2013-04-10 | 通用汽车环球科技运作有限责任公司 | Internal combustion engine and method for control |
| CN103256125A (en) * | 2013-05-02 | 2013-08-21 | 浙江大学 | System for hydraulic compression control over combustion of homogeneous gas mixture of internal-combustion engine |
| CN114033572A (en) * | 2021-11-29 | 2022-02-11 | 山西柴油机工业有限责任公司 | Cylinder cover structure capable of realizing energy storage and method |
-
2004
- 2004-01-16 CN CNA2004100210839A patent/CN1558095A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892901A (en) * | 2010-02-12 | 2010-11-24 | 靳北彪 | Vector multiplication cross engine |
| CN101892901B (en) * | 2010-02-12 | 2012-08-29 | 靳北彪 | Vector multiplication cross engine |
| CN103032178A (en) * | 2011-10-06 | 2013-04-10 | 通用汽车环球科技运作有限责任公司 | Internal combustion engine and method for control |
| CN103256125A (en) * | 2013-05-02 | 2013-08-21 | 浙江大学 | System for hydraulic compression control over combustion of homogeneous gas mixture of internal-combustion engine |
| CN103256125B (en) * | 2013-05-02 | 2015-07-15 | 浙江大学 | System for hydraulic compression control over combustion of homogeneous gas mixture of internal-combustion engine |
| CN114033572A (en) * | 2021-11-29 | 2022-02-11 | 山西柴油机工业有限责任公司 | Cylinder cover structure capable of realizing energy storage and method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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