CN1174284A - Volume variable combustor - Google Patents
Volume variable combustor Download PDFInfo
- Publication number
- CN1174284A CN1174284A CN 97115618 CN97115618A CN1174284A CN 1174284 A CN1174284 A CN 1174284A CN 97115618 CN97115618 CN 97115618 CN 97115618 A CN97115618 A CN 97115618A CN 1174284 A CN1174284 A CN 1174284A
- Authority
- CN
- China
- Prior art keywords
- volume
- chamber
- vacuum
- load
- small piston
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D15/00—Varying compression ratio
- F02D15/04—Varying compression ratio by alteration of volume of compression space without changing piston stroke
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
In the volume variable combustor, air inlet vacuum is utilized to change and regulate the volume of combustor via oil pressure. It can raise low-load circular heat efficiency of gasoline engine, reduce greatly oil consumption and exhaust pollution in low load and eliminate detonation caused by supercharge.
Description
The invention belongs to the fuel engine field.
It all is changeless that standing crop is regulated gasoline engine combustion chamber.Though this structure is simple, firm, easy to manufacture, but thermal efficiency of cycle reduces with engine load, idling operation is for normal ignition, need the enriching mixture strength, make incomplete combustion, exhaust emission increases, and maximum compression raises and causes pinking when also having supercharging, the development of this problem amount of hampering adjusting always petrol engine supercharging.
The objective of the invention is: the thermal efficiency of cycle when the raising amount is regulated the petrol engine running on the lower load, the oil consumption and the exhaust emission of reduction low-load, idling operation, the solution amount is regulated the pinking problem after the petrol engine supercharging.
The present invention realizes its purpose as follows: the fixed volume firing chamber is changed into ECC Expansion Combustion Chamber, utilize intake vacuum to go control, change combustion chamber volume by oil pressure.
Owing to have only engine for automobile operating mode commonly used at the low-load place (particularly sedan car), so the present invention only regulates motor to automobile-used amount outstanding meaning is arranged, peculiar to vessel, generating there are not much benefits with, field engine, because their operating mode commonly used is to locate at full capacity near.
The following principle of the present invention realizes its fuel-economizing, subtracts dirty purpose: the fixed volume firing chamber is changed into ECC Expansion Combustion Chamber, the volume of variable combustion is followed increasing of cylinder intake air quantity and is strengthened, the minimizing of air inflow and dwindling, it is the same to make that any operating mode can both guarantee to compress the combustible gas density of terminal hour, compressive force the same (no exception when being exactly idling or high negative supercharging).No matter what operating mode (overburdening exception) so can both adopt most economical, the concentration combustible gas of favourable discharging, thereby the oil consumption of idling operation and exhaust emission are reduced significantly.The fuel-economizing aspect mainly is that combustion chamber volume diminishes when operating mode low-load commonly used, the combustion condition when making low-load can and the same during full load.Thermal efficiency of cycle when having improved low-load again on the other hand, thus oil consumption and exhaust emission when making low-load are reduced significantly.Operating mode commonly used that it should be noted that most engine for automobile is at the low-load place, obviously reduces so the present invention can the amount of making regulates the automobile fuel consumption of motor, and exhaust emission reduces significantly.
Embodiment further specifies the present invention below in conjunction with accompanying drawing.
Figure one is a volume variable combustor structural representation of the present invention.
The present invention is made up of Vacuum testing mechanism, oil pressure control system and firing chamber three parts.Utilize intake vacuum (because intake vacuum is being represented cylinder intake air quantity) to go the control break combustion chamber volume by pressurized oil system.
Small piston 16 separates hydraulic chamber 9 and firing chamber 18, return spring 15 is arranged in the hydraulic chamber 9, there are five registration oilholes 12 and an one-way valve 8 in hydraulic chamber's cylinder body 14 tops, the location oilhole 12 outer position-sensing switches 11 that are with, position-sensing switch 11 is accepted vacuum cock 1 by connecting rod 4 and is driven, and piezometric spring 3 is arranged at vacuum cock 1 bottom.Vacuum chamber 2 leads to below the throtlle valve by connecting tube 5, on the suction tude in intake valve the place ahead.Accumulator 13 has a unidirectional oiling valve 6 and a unidirectional outlet valve 10.
When work done piston 17 moves upward, the elastic force that pressurized gas overcomes return spring 15 forces on the small piston 16 and moves, oil in the hydraulic chamber 9 is discharged accumulator 13 from location oilhole 12, and like this, hydraulic chamber's 9 volumes dwindle automatically, firing chamber 18 volumes increase automatically, when last registration hole 12 was closed on small piston 16 tops, the oil in the hydraulic chamber 9 can't be discharged, and has just withstood small piston 16, controlled small piston 16 on move, also just determined the maximum volume of firing chamber 18.Equivalent is regulated the petrol engine closure and is closed hour, cylinder intake air quantity reduces, vacuum chamber 2 vacuum ups, barometric pressure produces pressure to vacuum cock 1, vacuum cock 1 overcomes the elastic force of piezometric spring 3, promote position-sensing switch 11 by connecting rod 4 and move down, position-sensing switch 11 cuts out location oilhole 12 from the top down by row.Which registration oilhole it is closed to, and the position of which registration oilhole is exactly the extreme higher position of moving on the small piston 16, just determines the maximum volume of firing chamber 18, and cylinder intake air quantity is few more, and the degree of vacuum of vacuum chamber 2 is high more.Position-sensing switch 11 moves down many more, and location oilhole 12 is pent just many more, and the journey of dividing a word with a hyphen at the end of a line on the small piston 16 is just short more, and hydraulic chamber's 9 volumes are just big more, and the volume of firing chamber 18 is just more little, otherwise also opposite.Intake vacuum is the highest during idling, and position-sensing switch 11 moves down into the end.Hydraulic chamber's 9 volume maximums, firing chamber 18 volume minimums.Firing chamber 18 volumes are followed air inflow to reduce and are dwindled like this, and air inflow increases and strengthens.The effect of return spring 15 is in engine exhaust and period of intake small piston 16 to be moved down, and prepares for reducing combustion chamber volume next time.The outlet valve 10 of accumulator 13, oiling valve 6 all are single-way switch, and purpose is the oil circulation that makes accumulator 13, and is favourable to dispelling the heat.Oil inlet hole 6 especially little purposes are in the process that small piston 16 moves down, the oil-feed speed of control accumulator 13, thus the speed that moves down of control small piston 16 makes in each stroke cycle process, it is very short that small piston 16 moves down stroke, thereby improve the serviceability of volume variable combustor moving parts.The effect of the unidirectional oiling valve 8 on hydraulic chamber 9 tops is in the process of firing chamber fuel oil outburst, because hydraulic chamber's 9 pressure are very big, oil pressure switch 11 and small piston 16 top sealabilities are limited, small piston 16 has and certain moves on by force, when small piston 16 need move down, oil just flows into hydraulic chamber 9, the vacuum pulling force when having avoided small piston 16 just to move down from one-way valve 8.The effect of intercommunicating pore 7 is to allow oil be communicated with one-way valve 8.The effect of piezometric spring 3 is accurately to control the stroke that position-sensing switch moves down.According to the different different combustion chamber volume of degree of vacuum decision.
Claims (1)
- The output power of motor is regulated in a kind of firing chamber of fuel engine, consumption, it is characterized in that: the fixed volume firing chamber is changed into ECC Expansion Combustion Chamber, utilize intake vacuum to go control by oil pressure, change combustion chamber volume.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97115618 CN1174284A (en) | 1997-08-06 | 1997-08-06 | Volume variable combustor |
| AU86220/98A AU8622098A (en) | 1997-08-06 | 1998-08-06 | A variable volume combustion chamber system |
| PCT/CN1998/000152 WO1999007985A1 (en) | 1997-08-06 | 1998-08-06 | A variable volume combustion chamber system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97115618 CN1174284A (en) | 1997-08-06 | 1997-08-06 | Volume variable combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1174284A true CN1174284A (en) | 1998-02-25 |
Family
ID=5173328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97115618 Pending CN1174284A (en) | 1997-08-06 | 1997-08-06 | Volume variable combustor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1174284A (en) |
| AU (1) | AU8622098A (en) |
| WO (1) | WO1999007985A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009124416A1 (en) * | 2008-04-10 | 2009-10-15 | 可立新实业有限公司 | Cylinder cap with capacity fine-tuning device |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2769433A (en) * | 1949-05-11 | 1956-11-06 | Humphreys Invest Company | Internal combustion engine |
| JPS587816B2 (en) * | 1978-02-10 | 1983-02-12 | 日産自動車株式会社 | variable compression ratio internal combustion engine |
-
1997
- 1997-08-06 CN CN 97115618 patent/CN1174284A/en active Pending
-
1998
- 1998-08-06 WO PCT/CN1998/000152 patent/WO1999007985A1/en active Application Filing
- 1998-08-06 AU AU86220/98A patent/AU8622098A/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009124416A1 (en) * | 2008-04-10 | 2009-10-15 | 可立新实业有限公司 | Cylinder cap with capacity fine-tuning device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU8622098A (en) | 1999-03-01 |
| WO1999007985A1 (en) | 1999-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |