CN201078280Y - Engine piston with auxiliary piston - Google Patents
Engine piston with auxiliary piston Download PDFInfo
- Publication number
- CN201078280Y CN201078280Y CNU2007201023063U CN200720102306U CN201078280Y CN 201078280 Y CN201078280 Y CN 201078280Y CN U2007201023063 U CNU2007201023063 U CN U2007201023063U CN 200720102306 U CN200720102306 U CN 200720102306U CN 201078280 Y CN201078280 Y CN 201078280Y
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- China
- Prior art keywords
- piston
- engine
- auxiliary
- compression ratio
- sub
- 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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Abstract
The utility model relates to a piston, in particular to an engine piston of an auxiliary piston, which solves the problems of a compression ratio space in the engine and difficulties in exhaust air removal of the prior art, and is characterized in that a main piston is arranged, an auxiliary cylinder is positioned on a face of the main piston opposite to a combustion chamber, the auxiliary piston is disposed in the auxiliary cylinder and a spring is arranged below the auxiliary piston and has the advantages that engine air inflow is greatly increased without influencing by the residual exhaust gas, 20% of air inflow is added under the condition of not changing the discharge amount, by calculating upon the 4kg/m2 of discharge pressure and 1:2 compression ratio; the oxygen input in a first working process of the engine is increased without influencing by the residual exhaust gas, and accordingly the combustion efficiency and the engine power are greatly increased, the oil consumption is reduced and the discharge standard is promoted.
Description
Technical field
The utility model relates to a kind of piston, is specially a kind of engine piston that has sub-piston.
Background technique
Engine piston is important composition parts of motor.When piston moves, always leave the compression ratio space of certain volume between piston nose and the cylinder top in cylinder, thus the waste gas that produces behind the combustor inner cylinder always can not thoroughly discharge, thereby influence the firing effect of next work cycle.Prior art is a kind of for the transformation of piston to be the groove of offering a ω shape in piston end face, though can improve the performance of some motors, as reducing fuel consumption, reduces exhausted air quantity etc.But thoroughly improving the compression ratio space, getting rid of the residual exhaust gases aspect and also have certain gap.
Summary of the invention
The utility model exists compression ratio space, waste gas to get rid of difficult problem and a kind of engine piston that has sub-piston is provided in order to solve the motor that exists in the prior art.
The utility model is realized that by following technological scheme a kind of engine piston that has sub-piston comprises main piston, being provided with countercylinder facing on the one side of firing chamber on the main piston, is provided with sub-piston in the countercylinder, and sub-piston has spring.
When piston described in the utility model is peak in its motion in the position of installing, piston end face and cylinder bottom do not have the space, sub-piston moves up and down in countercylinder, peak is concordant with main piston, and the spatial volume when minimum point in the countercylinder just in time is the compression ratio space of motor.In compression stroke, sub-piston pressure spring and expose countercylinder the compression ratio space is provided, in exhaust stroke, sub-piston can be upspring again and the waste gas that produces that will burn is thoroughly discharged.
Compare with existing several pistons, the utility model has been opened a countercylinder again and has been installed a cylinder additional at piston upper surface, can produce following advantage, owing to there is not the residual exhaust gases influence, making air input of engine by air that very big increase arranged, is 4 kg/cm with exhaust pressure, and compression ratio calculates at 1: 20, under the constant situation of discharge capacity, increase by 20% air inflow; Owing to there is not the influence of residual exhaust gases, the oxygen feeding amount of first working procedure of motor increases, and has greatly increased combustion efficiency, and engine power increases, and fuel consumption reduces, and emission standard has also had large increase.
Description of drawings
Fig. 1 is the utility model internal structure schematic representation
Among the figure: 1-cylinder, 2-main piston, 3-countercylinder, 4-sub-piston, 5-spring, 6-connecting rod
Embodiment
A kind of engine piston that has sub-piston comprises main piston 2, being provided with countercylinder 3 facing on the one side of firing chamber on the main piston 2, is provided with sub-piston 4 in the countercylinder 3, and sub-piston 4 has spring 5.
Claims (1)
1. an engine piston that has sub-piston comprises main piston (2), it is characterized in that: go up facing on the one side of firing chamber at main piston (2) and be provided with countercylinder (3), be provided with sub-piston (4) in the countercylinder (3), sub-piston (4) has spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201023063U CN201078280Y (en) | 2007-08-20 | 2007-08-20 | Engine piston with auxiliary piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201023063U CN201078280Y (en) | 2007-08-20 | 2007-08-20 | Engine piston with auxiliary piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078280Y true CN201078280Y (en) | 2008-06-25 |
Family
ID=39570342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201023063U Expired - Fee Related CN201078280Y (en) | 2007-08-20 | 2007-08-20 | Engine piston with auxiliary piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078280Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269043A (en) * | 2011-08-17 | 2011-12-07 | 徐茂生 | Method for introducing air and oxygen into diesel engine at high pressure |
| CN102996241A (en) * | 2012-08-29 | 2013-03-27 | 尤文峰 | Double piston type four-stroke internal combustion engine |
| CN104533655A (en) * | 2014-12-17 | 2015-04-22 | 无锡蠡湖增压技术股份有限公司 | Supercharging piston |
| CN109989845A (en) * | 2017-12-29 | 2019-07-09 | 长城汽车股份有限公司 | Engine piston, cylinder and vehicle |
| CN110159422A (en) * | 2019-07-03 | 2019-08-23 | 吕国良 | Piston, rotor internal-combustion engine, vehicle, aircraft and ship |
| CN113396275A (en) * | 2019-02-01 | 2021-09-14 | 海德曼爱立信专利公司 | Method for providing a variable compression ratio in an internal combustion engine and device for the method |
-
2007
- 2007-08-20 CN CNU2007201023063U patent/CN201078280Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269043A (en) * | 2011-08-17 | 2011-12-07 | 徐茂生 | Method for introducing air and oxygen into diesel engine at high pressure |
| CN102269043B (en) * | 2011-08-17 | 2014-04-16 | 徐茂生 | Method for introducing air and oxygen into diesel engine at high pressure |
| CN102996241A (en) * | 2012-08-29 | 2013-03-27 | 尤文峰 | Double piston type four-stroke internal combustion engine |
| CN102996241B (en) * | 2012-08-29 | 2016-08-31 | 苟俊阳 | Double piston type four-stroke internal combustion engine |
| CN104533655A (en) * | 2014-12-17 | 2015-04-22 | 无锡蠡湖增压技术股份有限公司 | Supercharging piston |
| CN109989845A (en) * | 2017-12-29 | 2019-07-09 | 长城汽车股份有限公司 | Engine piston, cylinder and vehicle |
| CN109989845B (en) * | 2017-12-29 | 2020-06-12 | 长城汽车股份有限公司 | Engine piston, cylinder and vehicle |
| CN113396275A (en) * | 2019-02-01 | 2021-09-14 | 海德曼爱立信专利公司 | Method for providing a variable compression ratio in an internal combustion engine and device for the method |
| CN113396275B (en) * | 2019-02-01 | 2023-08-25 | 海德曼爱立信专利公司 | Method for providing variable compression ratio in internal combustion engine and device therefor |
| CN110159422A (en) * | 2019-07-03 | 2019-08-23 | 吕国良 | Piston, rotor internal-combustion engine, vehicle, aircraft and ship |
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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: 20080625 Termination date: 20100820 |