CN1470755A - Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method - Google Patents
Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method Download PDFInfo
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- CN1470755A CN1470755A CNA031482899A CN03148289A CN1470755A CN 1470755 A CN1470755 A CN 1470755A CN A031482899 A CNA031482899 A CN A031482899A CN 03148289 A CN03148289 A CN 03148289A CN 1470755 A CN1470755 A CN 1470755A
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- egr
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- manifold
- petrol engine
- waste gas
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Abstract
The present invention discloses an equipment capable of implementing layered recrculation of waste gas in the cylinder of gasoline engine and method for controlling air admission. Said waste gas recirculation equipment comprises EGR main pipe for outlet of waste gas of gasoline engine to waste gas mainfold and EGR manifold to air admission inlet, fixing connected plate of EGR manifold, controlled valve on the EGR main pipe, coupling mechanism of valve and cooling water temp. switch. The advatnage of the invention lies in the at the same time of reducing NOx discharge by means of EGR the power of engine is not basically changed, and the power of engine also can be raised by 3-5 % and the fuel consumption can be reduced by 3-5%.
Description
Technical field
The present invention relates to a kind of device and air intake control method of realizing layer-stepping exhaust gas recirculation in the petrol engine cylinder, belong to the automobile engine tail gas emission control technique.
Background technique
Along with China's automobile pollution increases fast and to the rules increasingly stringent that motor vehicle exhaust emission requires, further reduces nitrogen oxide (NO
x) be inexorable trend.Adopting exhaust gas recirculation (EGR) is to reduce petrol engine NO
xDischarge one of effective means, usually EGR introduces the intake manifold with waste gas, in case the amount of EGR increases like this, can have influence on the power character and the Economy of motor, because waste gas is too much in the mixed gas, the waste gas around the spark plug increases, be unfavorable for that petrol engine catches fire, it is very unfavorable to the burning of mixed gas that the speed of burning reduces a lot, too much EGR amounts, can make the oil consumption increase of motor and power descends.Lead and adopt the layering EGR Technology can increase EGR, reduce power decline simultaneously and improve fuel economy.
Summary of the invention
The object of the present invention is to provide a kind of device and control air inlet method of realizing layer-stepping exhaust gas recirculation in the petrol engine cylinder, this device and controlling method can impel the waste gas of recirculation to realize layering in cylinder, thereby can improve the NO of motor greatly
xDischarging improves fuel economy.
The present invention is realized by following technical proposals.Realize the device of layer-stepping exhaust gas recirculation in the petrol engine cylinder, it is characterized in that this device is made up of to house steward EGR of leading to exhaust manifold and the EGR manifold, the fixed connecting plate of EGR manifold, the controllable valve on house steward EGR, the linking mechanism of valve, the cooling-water temperature switch that lead to inlet valve port the petrol engine waste gas outlet.
Above-mentioned fixed connecting plate is arranged near near the cylinder head of engine intake manifold one side, offers the hole of circular hole, elliptical aperture or the horseshoe type identical with the intake duct shape on it.Above-mentioned fixed connecting plate is drawn the EGR manifold identical with number of cylinders, one end of EGR manifold is connected on house steward EGR, the other end extend in the inlet hole of respective cylinder on the fixed connecting plate, near the arrival inlet valve port, can reach the left side or the right side of valve port, also can reach the left side and the right side of valve port simultaneously.
Adopt above-mentioned device, realize the air inlet method of layer-stepping exhaust gas recirculation in the petrol engine cylinder, it is characterized in that, comprise following specific practice:
1) when cooling water temperature was lower than 50 ℃ or load less than 35% Maximum Torque, EGR did not enter cylinder;
2) be higher than 50 ℃ when cooling water temperature, but load is during greater than 70% Maximum Torque, EGR does not enter cylinder yet.
Advantage of the present invention is that the power of motor is constant substantially when can reduce the NOx emission level by EGR, and leads the power that can also make motor under the situation at certain EGR and increase to surpass 3%, and specific fuel consumption descends and is not less than 3%.
Description of drawings
Accompanying drawing 1 is the device schematic representation of layer-stepping exhaust gas recirculation in the petrol engine cylinder of the present invention.
Accompanying drawing 2 is the manifold connecting plate constructional device figure of exhaust gas recirculation.
1 is the engine exhaust outlet in the accompanying drawing, and 2 is house steward EGR, and 3 is the EGR valve, and 4 is thermal switch, and 5 are and the EGR throttle valve of closure interlock, and 6 is closure, and 7 is engine intake, and 8 is fixed connecting plate, and 9 is the EGR manifold.
Embodiment
Exhaust gas recirculation (EGR) technology is that part waste gas is introduced gas handling system, enters cylinder with air inlet and participates in engine combustion.Because carbon dioxide (CO in the waste gas
2) and water (H
2O) adding has increased the waste gas residual coefficients, has improved the heat capacity ratio of combustion mixture, makes velocity of combustion reduce, and maximum combustion temperature descends, and these all are unfavorable for the generation of NOx, so after adopting the EGR technology, can effectively reduce the discharging of NOx.But, usually EGR introduces the intake manifold with waste gas, in case the amount of EGR increases like this, can have influence on the power character and the Economy of motor, because waste gas is too much in the mixed gas, the waste gas around the spark plug increases, be unfavorable for that petrol engine catches fire, the speed of burning reduces rapidly, and too much EGR amount is very unfavorable to the burning of mixed gas, and the oil consumption increase of motor and power are descended.
The present invention adopts layer-stepping exhaust gas recirculation in the cylinder, can avoid the problems referred to above, because waste gas is guided to a side (or both sides) of cylinder through exhaust manifold, inflammable mixture forms concentration gradient at spark plug between the cylinder wall, around spark plug is the mixed gas that is suitable for catching fire, around cylinder is the more zone of waste gas, so both can guarantee reliable ignition, do not influence propagation of flame again, thereby can when reducing the NOx discharging significantly, not influence the power character and the Economy of motor substantially, under the situation of suitable EGR amount, also can make the power of motor increase by 3～5%, specific fuel consumption reduces by 3～5%.
Embodiment
1, between engine intake manifold and cylinder head, increases a thick connecting plate (as shown in Figure 2) that is about 15mm, the gas-entered passageway of each cylinder is arranged on the connecting plate.On the relevant position of every cylinder gas-entered passageway, bore the hole of Φ 12mm, will manage from then on towards the EGR of each cylinder and stretch in the hole, and integer makes it arrive the relevant position.The EGR pipe is welded with connecting plate.Connect together with the other end of a thicker pipe, be called house steward EGR these EGR pipes.
2, house steward EGR is connected on the waste pipe, the centre installs a throttle valve and an EGR valve additional.Throttle valve links to each other with closure by linking mechanism.
3, a vacuum air hatch is installed at place, engine intake manifold closure below, and a cooling water temperature control switch is installed on the cylinder body water jacket of engine.Couple together with the vacuum hole of vacuum tube vacuum air hatch, cooling-water temperature switch and EGR valve.
Claims (3)
1. device of realizing layer-stepping exhaust gas recirculation in the petrol engine cylinder is characterized in that: this device is made up of to house steward EGR of leading to exhaust manifold and the EGR manifold, the fixed connecting plate of EGR manifold, the controllable valve on house steward EGR, the linking mechanism of valve, the cooling-water temperature switch that lead to inlet valve port the petrol engine waste gas outlet.
2. press the device of layer-stepping exhaust gas recirculation in the described realization petrol engine of claim 1 cylinder, it is characterized in that: fixed connecting plate is arranged near near the cylinder head of engine intake manifold one side, offers the hole of circular hole, elliptical aperture or the horseshoe type identical with the intake duct shape on it; Fixed connecting plate is drawn the EGR manifold identical with number of cylinders, one end of EGR manifold is connected on house steward EGR, the other end extend in the inlet hole of respective cylinder on the fixed connecting plate, near the arrival inlet valve port, can reach the left side or the right side of valve port, also can reach the left side and the right side of valve port simultaneously.
3. the device device of layer-stepping exhaust gas recirculation in the described realization petrol engine of claim 1 cylinder is pressed in an employing, realizes the air inlet method of layer-stepping exhaust gas recirculation in the petrol engine cylinder, it is characterized in that comprising following specific practice:
When 1) cooling water temperature was lower than 50 ℃ or load less than 35% Maximum Torque, EGR did not enter cylinder;
2) be higher than 50 ℃ when cooling water temperature, but load is during greater than 70% Maximum Torque, EGR does not enter cylinder yet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031482899A CN100359146C (en) | 2003-07-03 | 2003-07-03 | Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031482899A CN100359146C (en) | 2003-07-03 | 2003-07-03 | Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470755A true CN1470755A (en) | 2004-01-28 |
| CN100359146C CN100359146C (en) | 2008-01-02 |
Family
ID=34156238
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031482899A Expired - Fee Related CN100359146C (en) | 2003-07-03 | 2003-07-03 | Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method |
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| CN (1) | CN100359146C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855432A (en) * | 2007-09-07 | 2010-10-06 | 丰田自动车株式会社 | Internal combustion engine, vehicle mounting it, and control method of internal combustion engine |
| CN102425508A (en) * | 2011-11-08 | 2012-04-25 | 天津大学 | Exhaust gas circulation (EGR) based hybrid charge system and method of gasoline engine |
| CN101397955B (en) * | 2007-09-28 | 2012-05-30 | 本田技研工业株式会社 | Exhaust gas recirculation device |
| CN101187348B (en) * | 2006-09-19 | 2012-10-24 | 哈尔德克斯水利学公司 | Exhaust gas recirculation system for gasoline engines |
| CN102777293A (en) * | 2011-05-10 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | Intake manifold assembly for dedicated exhaust gas recirculation |
| CN103670815A (en) * | 2013-12-20 | 2014-03-26 | 吉林大学 | Gasoline engine EGR stratified charge system based on flow guiding plate |
| CN104791149A (en) * | 2015-04-21 | 2015-07-22 | 吉林大学 | Gasoline engine air and waste gas layered regulation device and method thereof |
| CN106499548A (en) * | 2015-08-31 | 2017-03-15 | 谢晓宇 | A kind of quartastroke engine exhaust gas re-circulation apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3930243A1 (en) * | 1989-09-11 | 1991-03-14 | Bosch Gmbh Robert | INTERNAL COMBUSTION ENGINE |
| JP2000045879A (en) * | 1998-08-04 | 2000-02-15 | Nissan Diesel Motor Co Ltd | Egr device |
| US6347619B1 (en) * | 2000-03-29 | 2002-02-19 | Deere & Company | Exhaust gas recirculation system for a turbocharged engine |
-
2003
- 2003-07-03 CN CNB031482899A patent/CN100359146C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187348B (en) * | 2006-09-19 | 2012-10-24 | 哈尔德克斯水利学公司 | Exhaust gas recirculation system for gasoline engines |
| CN101855432A (en) * | 2007-09-07 | 2010-10-06 | 丰田自动车株式会社 | Internal combustion engine, vehicle mounting it, and control method of internal combustion engine |
| CN101855432B (en) * | 2007-09-07 | 2013-01-23 | 丰田自动车株式会社 | Internal combustion engine, vehicle mounting it, and control method of internal combustion engine |
| CN101397955B (en) * | 2007-09-28 | 2012-05-30 | 本田技研工业株式会社 | Exhaust gas recirculation device |
| CN102777293A (en) * | 2011-05-10 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | Intake manifold assembly for dedicated exhaust gas recirculation |
| CN102777293B (en) * | 2011-05-10 | 2015-03-18 | 通用汽车环球科技运作有限责任公司 | Intake manifold assembly for dedicated exhaust gas recirculation |
| CN102425508A (en) * | 2011-11-08 | 2012-04-25 | 天津大学 | Exhaust gas circulation (EGR) based hybrid charge system and method of gasoline engine |
| CN103670815A (en) * | 2013-12-20 | 2014-03-26 | 吉林大学 | Gasoline engine EGR stratified charge system based on flow guiding plate |
| CN103670815B (en) * | 2013-12-20 | 2015-10-21 | 吉林大学 | Based on the petrol engine EGR stratified charge system of dumping-guiding plate |
| CN104791149A (en) * | 2015-04-21 | 2015-07-22 | 吉林大学 | Gasoline engine air and waste gas layered regulation device and method thereof |
| CN104791149B (en) * | 2015-04-21 | 2017-04-12 | 吉林大学 | Gasoline engine air and waste gas layered regulation device and method thereof |
| CN106499548A (en) * | 2015-08-31 | 2017-03-15 | 谢晓宇 | A kind of quartastroke engine exhaust gas re-circulation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100359146C (en) | 2008-01-02 |
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