CN102155336A - Scavenging recirculation energy-saving method for two-stroke petrol engine - Google Patents
Scavenging recirculation energy-saving method for two-stroke petrol engine Download PDFInfo
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- CN102155336A CN102155336A CN2011100288250A CN201110028825A CN102155336A CN 102155336 A CN102155336 A CN 102155336A CN 2011100288250 A CN2011100288250 A CN 2011100288250A CN 201110028825 A CN201110028825 A CN 201110028825A CN 102155336 A CN102155336 A CN 102155336A
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- scavenging
- recirculation
- control valve
- quick control
- piston
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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
Abstract
The invention relates to a scavenging recirculation energy-saving method for a two-stroke petrol engine. The two-stroke petrol engine comprises an air inlet pipe, an exhaust pipe, a crankshaft position sensor, a crankshaft fluted disc, a scavenging recirculation quick control valve, a connecting air inlet pipe, a scavenging bypass pipe of the exhaust pipe and a scavenging recirculation central controller, wherein the scavenging recirculation quick control valve is connected in series to the scavenging bypass pipe; when a piston moves from an upper dead point to a lower dead point, and the top surface of the piston passes through the upper edge of a scavenging port, the scavenging recirculation central controller controls the scavenging recirculation quick control valve to be opened quickly, so that combustible mixed gas exhausted from the exhaust port in the scavenging process is reintroduced into the air inlet pipe from the exhaust pipe through the scavenging bypass pipe by using the scavenging recirculation quick control valve; and when the piston moves from the lower dead point to the upper dead point, and the top surface of the piston passes through the upper edge of the exhaust port, the scavenging recirculation central controller controls the scavenging recirculation quick control valve to be closed quickly. The scavenging recirculation energy-saving method can be widely applied to energy-saving control over the conventional two-stroke petrol engine, reduces emission of nitrogen oxides because combusted waste gas participates in burning, and has a simple and compact structure, low manufacturing cost, high economic efficiency and a remarkable emission effect.
Description
Technical field
The present invention relates to a kind of power-economizing method of motor, particularly a kind of power-economizing method of two-stroke gasoline engine.
Background technique
Existing two-stroke gasoline engine air exchange system utilizes crankcase as " terminal " mostly, carries out scavenging by inflammable mixture.That is: piston in the lower dead center movement process, utilizes piston-top surface by top dead center, at first opens relief opening and carries out exhaust; Subsequently, piston continues descending, opens scavenging port, when crankcase pressure during greater than cylinder pressure, inflammable mixture enters cylinder from crankcase through scavenging port, orders about waste gas simultaneously and makes it continue to discharge, and this process lasts till that always piston is through till closing scavenging port after bottom dead center in up process; It is up that piston continues, and utilizes cylinder pressure to continue combustion gas, and simultaneously, the part inflammable mixture also continues to discharge outside the cylinder from relief opening with waste gas, and this process lasts till that always piston stroking upward closes relief opening, and whole gas exchange process finishes.According to patent (in the patent please number: 91223073.8, CN 2103010U) and known information notification number:, in the whole gas exchange process of two-stroke gasoline engine, have 30%～40% fresh inflammable mixture in scavenging process, to discharge outside the cylinder approximately with waste gas.This is that existing two-stroke gasoline engine is less economical, the fundamental cause of emission performance difference.
For solving the problem of two-stroke gasoline engine Economy, emission performance difference, carried out a large amount of research both at home and abroad, as the layered scavenging of gasoline injection technology, exhaust tunable technology, exhaust additional device, variety of way and in-cylinder direct injection technology etc., but since above-mentioned technology aspect the complex structure degree, the functional reliability of cost control aspect, different operating mode motors and to the aspect that requires of fuel qualities, all have problem in various degree.Therefore, for improving the Economy and the emission performance of two-stroke gasoline engine, remain it is further studied.
Summary of the invention
The present invention provides a kind of scavenging recirculation power-economizing method that can improve two-stroke gasoline engine Economy and emission performance for solving the problem that exists in the known technology, this invention comprises suction tude, outlet pipe, crankshaft position sensor and bent axle fluted disc, it is characterized in that: the scavenging bypass tube and the scavenging recirculation central control unit that also comprise scavenging recirculation quick control valve, connection suction tude and outlet pipe; Described scavenging recirculation quick control valve is connected on the described scavenging bypass tube, and the control end of described scavenging recirculation quick control valve connects the D pin of described scavenging recirculation central control unit; The signal end of described crankshaft position sensor links to each other with the C pin of described scavenging recirculation central control unit; In a work cycle of motor, when piston is moved to lower dead center by top dead center, it is common when determining piston-top surface through the upper edge A of transfer port to match by described crankshaft position sensor and bent axle fluted disc, described scavenging recirculation central controller controls scavenging recirculation quick control valve is opened rapidly, the mixed gas that scavenging process is overflowed from relief opening is again introduced suction tude through the scavenging bypass tube from outlet pipe by scavenging recirculation quick control valve, when piston moves through the top edge B of described crankshaft position sensor and the common definite piston-top surface process exhaust port of bent axle fluted disc cooperation by lower dead center toward top dead center, the described scavenging recirculation of described scavenging recirculation central controller controls quick control valve cuts out rapidly, and this work cycle scavenging process recycling finishes.
The present invention is simple and compact for structure, change less to former two-stroke gasoline engine, manufacture cost is lower, can effectively improve the Economy and the emission performance of two-stroke gasoline engine, can be widely used in existing two-stroke gasoline engine, and introduce the mixed gas of suction tude from outlet pipe by the scavenging bypass tube, both comprised inflammable mixture, and also comprised and fire waste gas, because its fellowship burning, therefore the present invention is to reducing the discharging of nitrogen oxide, and effect is especially remarkable.
Description of drawings
Accompanying drawing is depicted as one embodiment of the present of invention, wherein:
1---scavenging recirculation central control unit 2---bent axle fluted disc
3---crankshaft position sensor 4---scavenging port
5---outlet pipe 6---scavenging recirculation quick control valve
7---the scavenging bypass tube 8 that connects outlet pipe and suction tude---relief opening
9---suction tude
A---scavenging port top edge B---relief opening top edge
C---CRANK SENSOR pin D---scavenging recirculation quick control valve control pin
Embodiment
In conjunction with the accompanying drawings, the present invention will be further described by embodiment.
Referring to accompanying drawing, the two-stroke gasoline engine scavenging recirculation power-economizing method that the present invention announces, comprise suction tude 9, outlet pipe 5, crankshaft position sensor 3 and bent axle fluted disc 2, also comprise the scavenging bypass tube 7 and the scavenging recirculation central control unit 1 of scavenging recirculation quick control valve 6, connection suction tude and outlet pipe.Scavenging recirculation quick control valve 6 is connected on the scavenging bypass tube 7; The control end of scavenging recirculation quick control valve 6 links to each other with the D pin of scavenging recirculation central control unit 1, and the signal end of crankshaft position sensor 3 links to each other with the C pin of scavenging recirculation central control unit 1;
In a work cycle of motor, when piston is moved to lower dead center by top dead center, it is common when determining piston-top surface through the upper edge A of transfer port 4 to match by crankshaft position sensor 3 and bent axle fluted disc 2, scavenging recirculation central control unit 1 control scavenging recirculation quick control valve 6 is opened rapidly, the mixed gas that scavenging process is overflowed from relief opening 8 is again introduced suction tude 9 through scavenging bypass tube 7 from outlet pipe 5 by scavenging recirculation quick control valve 6, when piston matches common when determining piston-top surface through the top edge B of relief opening 8 by lower dead center toward top dead center when motion by crankshaft position sensor 3 and bent axle fluted disc 2, scavenging recirculation central control unit 1 control scavenging recirculation quick control valve 6 cuts out rapidly, and this work cycle scavenging process recycling finishes.
The present invention can be widely used in two-stroke gasoline engine, and it is simple and compact for structure, connection and reasonable arrangement, and low cost of manufacture, power character, economic impacts are remarkable, and to the especially discharging of nitrogen oxide of discharging that improves two-stroke gasoline engine, effect is especially remarkable.
Claims (1)
1. two-stroke gasoline engine scavenging recirculation power-economizing method, comprise suction tude, outlet pipe, crankshaft position sensor and bent axle fluted disc, it is characterized in that: also comprise scavenging recirculation quick control valve, the scavenging bypass tube and the scavenging recirculation central control unit that connect suction tude and outlet pipe, scavenging recirculation quick control valve is connected on the scavenging bypass tube, the control end of scavenging recirculation quick control valve links to each other with the D pin of scavenging recirculation central control unit, the signal end of crankshaft position sensor links to each other with the C pin of scavenging recirculation central control unit, when piston is moved toward lower dead center by top dead center, when piston-top surface passed through the top edge of transfer port, scavenging recirculation central controller controls scavenging recirculation quick control valve was opened fast; When piston by lower dead center toward top dead center motion, piston-top surface is during through the top edge of relief opening, the quick closedown of scavenging recirculation central controller controls scavenging recirculation quick control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100288250A CN102155336A (en) | 2011-01-21 | 2011-01-21 | Scavenging recirculation energy-saving method for two-stroke petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100288250A CN102155336A (en) | 2011-01-21 | 2011-01-21 | Scavenging recirculation energy-saving method for two-stroke petrol engine |
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| Publication Number | Publication Date |
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| CN102155336A true CN102155336A (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100288250A Pending CN102155336A (en) | 2011-01-21 | 2011-01-21 | Scavenging recirculation energy-saving method for two-stroke petrol engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061102A (en) * | 2017-05-16 | 2017-08-18 | 大连民族大学 | A kind of igniter for two-stroke internal combustion engine plasma igniting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06241127A (en) * | 1993-02-10 | 1994-08-30 | Toyota Motor Corp | Exhaust gas recirculation device of two-cycle internal combustion engine |
| CN1115997A (en) * | 1993-01-04 | 1996-01-31 | 轨道工程有限公司 | Exhaust gas recirculation in a two stroke engine |
| CN1310783A (en) * | 1998-06-22 | 2001-08-29 | 达尼埃尔·德雷克 | Two-stroke internal combustion engine provided with a supercharging device and exhaust gas partial recycling |
| CN2557709Y (en) * | 2001-12-25 | 2003-06-25 | 李静 | Combustable gas leakage-resistant system for two-stroke engine |
-
2011
- 2011-01-21 CN CN2011100288250A patent/CN102155336A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115997A (en) * | 1993-01-04 | 1996-01-31 | 轨道工程有限公司 | Exhaust gas recirculation in a two stroke engine |
| JPH06241127A (en) * | 1993-02-10 | 1994-08-30 | Toyota Motor Corp | Exhaust gas recirculation device of two-cycle internal combustion engine |
| CN1310783A (en) * | 1998-06-22 | 2001-08-29 | 达尼埃尔·德雷克 | Two-stroke internal combustion engine provided with a supercharging device and exhaust gas partial recycling |
| CN2557709Y (en) * | 2001-12-25 | 2003-06-25 | 李静 | Combustable gas leakage-resistant system for two-stroke engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061102A (en) * | 2017-05-16 | 2017-08-18 | 大连民族大学 | A kind of igniter for two-stroke internal combustion engine plasma igniting |
| CN107061102B (en) * | 2017-05-16 | 2019-03-22 | 大连民族大学 | A kind of igniter for two-stroke internal combustion engine plasma igniting |
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Application publication date: 20110817 |