CN102588105B - Negative pressure type engine and working cycle process thereof - Google Patents
Negative pressure type engine and working cycle process thereof Download PDFInfo
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- CN102588105B CN102588105B CN201210056745.0A CN201210056745A CN102588105B CN 102588105 B CN102588105 B CN 102588105B CN 201210056745 A CN201210056745 A CN 201210056745A CN 102588105 B CN102588105 B CN 102588105B
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Abstract
The invention discloses a kind of negative pressure type engine and working cycle process thereof, it is made up of parts such as body, cylinder, cylinder cover, piston, combustion system, valve actuating mechanism and crankshaft connecting rod systems, and valve actuating mechanism is equipped with inlet valve and exhaust valve on cylinder cover；Piston gap when top dead centre and between cylinder cover ensures that piston touches less than cylinder cover, inlet valve and exhaust valve are located at the end face of cylinder cover with the sealing surface that contacts of cylinder cover, the piston whole cylinder space when lower dead center is arranged at the piston lower dead center of cylinder wall as combustor, the atomizer of combustion system and spark plug.As long as the power that the present invention suitably increases cylinder diameter generation in the case of fuel consumption is identical is much greater, and lower noise, save fuel.<!-- 2 -->
Description
Technical field
The present invention relates to electromotor.
Background technology
Electromotor is the power source of automobile, and electromotor is also widely used for the various aspects such as transportation machinery, agricultural machinery, engineering machinery and generating set.Engine types is various, and wherein two-stroke and four-stroke engine are most common, belong to stroke piston combustion engine.It is mechanical energy by the thermal energy of fuel combustion generation that internal combustion engine is made by the state change of working medium.According to the difference of fuel used kind, it is divided into gasoline engine, diesel engine and gaseous propellant engine three class.They be all by fuel combustion produce High Temperature High Pressure and do work.
The main structure of electromotor is made up of parts such as body, cylinder, cylinder cap, piston, combustion system, valve actuating mechanism and crankshaft connecting rod systems.
The operation principle of two stroke engine is, cylinder block has three holes, i.e. air inlet, steam vent and air-vent, and these three hole is closed by piston in certain moment respectively；Its cycle of operation comprises two strokes: 1. the first stroke: piston moves up from lower dead center, after three pores are closed simultaneously, the gaseous mixture entering cylinder is compressed；When air inlet exposes, combustion mixture flows into crankcase；2. the second stroke: when piston is compressed near top dead center, spark ignitor combustion mixture, combustion gas expands against piston and moves down work done.At this moment air inlet is closed, and the combustion mixture being enclosed in crankcase is compressed；When piston is close to lower dead center, steam vent is opened, and waste gas is gone out；Air-vent is opened subsequently, and the combustion mixture of preloading rushes people's cylinder, drives away waste gas, carries out scavenging period.The advantage of two stroke engine is: 1. two stroke engine does not has valve, and this just enormously simplify their structure, alleviates the weight of self；2. two stroke engine each revolution igniting is once, every single-revolution it have a double power stroke, and four-stroke engine is lighted a fire once every rev, and this just imparts the dynamic foundation that two stroke engine is important；3. two stroke engine can operate on orientation in office, and this is critically important on some equipment such as chain saw.These advantages make two stroke engine lighter, simply, cheap for manufacturing cost, and the combination of light and double power makes it be better than four-stroke engine.But two-stroke engine lubrication system is not enough, parts consume is fast, and fuel efficiency is the highest, and burn lubricating oil, produces air pollution.These deficiencies mean that two stroke engine can be only applied to the occasion that those motors are rarely needed and " thrust-weight ratio " is critically important.
The operation principle of four-stroke engine is, cylinder cover contacts, equipped with inlet valve and exhaust valve, inlet valve and exhaust valve and cylinder cover, the bottom surface that sealing surface is cylinder cover, and the atomizer of combustion system is arranged on cylinder cover to direction oil spout at the bottom of cylinder.Inflation and aerofluxus outside cylinder in cylinder is realized by the opening and closing of inlet and outlet door.Four-stroke gasoline engine completes a cycle of operation in suction stroke, compression travel, working stroke and instroke.During suction stroke, now IO Intake Valve Opens, exhaust valve closing, crank rotation 180 °, piston is moved to the gaseous mixture of lower dead center, air and gasoline under the drive of bent axle and is inhaled into cylinder by inlet valve by top dead centre, and is mixed to form combustion mixture in cylinder further；During compression travel, inlet and outlet door simultaneously closes off, and piston moves to top dead centre from lower dead center, crank rotation 180 °, and in cylinder, gaseous mixture rear pressure and temperature by compression constantly raises；At working stroke, inlet valve, exhaust valve are turned off, crank rotation 180 °, when the piston is near the top dead centre, by spark ignitor combustion mixture, mixture combustion discharges substantial amounts of heat energy, and the combustion gas of High Temperature High Pressure promotes piston to move to lower dead center from top dead centre, and by the external output mechanical energy of toggle；During instroke, exhauxt valve opens, inlet valve still closes, and piston moves to top dead centre from lower dead center, and crank rotation 180 °, the waste gas after burning is in exclusion effect aerofluxus outside cylinder of cylinder inside and outside differential pressure and piston.Though four-stroke engine overcomes the shortcoming of two stroke engine, but the advantage not possessing two stroke engine.
Summary of the invention
The advantage light, simple and cheap for manufacturing cost in order to retain existing two stroke engine, the present invention, on the basis of four-stroke engine, makes improvements, it is provided that a kind of negative pressure type engine.
In order to achieve the above object, negative pressure type engine of the present invention adopts the technical scheme that；It is made up of parts such as body, cylinder, cylinder cover, piston, combustion system, valve actuating mechanism and crankshaft connecting rod systems, and valve actuating mechanism is equipped with inlet valve and exhaust valve on cylinder cover；It is characterized in that, piston gap when top dead centre and between cylinder cover ensures that piston touches less than cylinder cover, inlet valve and exhaust valve are located at the end face of cylinder cover with the sealing surface that contacts of cylinder cover, the piston whole cylinder space when lower dead center is arranged at the piston lower dead center of cylinder wall as combustor, the atomizer of combustion system and spark plug.
Its working cycle process is: 1, the first process, when piston starts descending at top dead centre, IO Intake Valve Opens, exhaust valve closing, filtered device filtered air enters combustor, during descent of piston to lower dead center, IC Intake Valve Closes, atomizer is opened and plug ignition, and the moment exhaust valve of igniting is opened therewith, and moment closes；2, the second backhaul, piston moves up from lower dead center under suction function, exhauxt valve opens when the piston is near the top dead centre, and waste gas is gone out, and proceeds to the first process.
Acting principle is, in first process, filtered device filtered air enters combustor, in second backhaul, first oil spout is easily ignited by the spark plug after mixing with air, burning consumes partial oxidation in cylinder, and make the gas expansion in tank, now, exhaust valve is opened therewith and moment closes, expanding gas unnecessary in getting rid of tank, make cylinder external and internal pressure equal, exhaust valve moment closes rear enclosed cylinder, steam rapid drop in temperature under cylinder wall conductive force in cylinder, gas reduces, make cylinder internal gas pressure less than outside atmosphere pressure (general designation negative pressure), so as to making to move on piston, produce power.
Fuel in inventive engine only serves assosting effect, not as power direct sources, compared with conventional engines, as long as the power suitably increasing cylinder diameter generation in the case of fuel consumption is identical is much greater.Owing to fuel simply burning is not detonation, noise is substantially reduced；Owing to there is no compression travel, not consumed energy at work, so also saving fuel；Owing to inlet valve and exhaust valve are located at the end face of cylinder cover, so phenomenon of taking blame for others after valve falls into will not be produced.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the principle schematic of the embodiment of the present invention, in figure only as a example by single-cylinder engine, wherein
Fig. 1 is the piston situation when top dead centre, and Fig. 2 is the piston situation when lower dead center.
Marginal data, 1-crankshaft connecting rod system, 2-cylinder, 3-piston, 4-exhaust valve, 5-inlet valve, 6-atomizer and spark plug, 7-cylinder cover, 8-combustor.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of negative pressure type engine, its structure is made up of parts such as body, cylinder 2, cylinder cover 7, piston 3, combustion system, valve actuating mechanism and crankshaft connecting rod systems 1, and valve actuating mechanism is equipped with inlet valve 5 and exhaust valve 4 on cylinder cover 2；Wherein, the piston 3 gap when top dead centre and between cylinder cover 7 ensures that piston 3 touches less than cylinder cover 7, it is generally no greater than 2mm, the most only set small free clearance, inlet valve 5 and exhaust valve 4 are located at the end face of cylinder cover 7 with the sealing surface that contacts of cylinder cover 7, the piston 3 whole cylinder space when lower dead center is arranged at piston 3 lower dead center of cylinder wall as combustor 8, the atomizer of combustion system and spark plug 6；
Its working cycle process is: 1, the first process, when piston 3 starts descending at top dead centre, inlet valve 5 is opened, exhaust valve 4 cuts out, and filtered device filtered air enters combustor 8, when piston 3 comes downwards to lower dead center, inlet valve 5 is closed, atomizer is opened and spark plug 6 is lighted a fire, and the moment exhaust valve 4 of igniting is opened therewith, and closes at moment exhaust valve 4；2. the second backhaul: piston 3 moves up from lower dead center under suction function, when piston 3 is close to top dead centre, exhaust valve 4 is opened, and waste gas is gone out, and proceeds to the first process.
Claims (2)
1. a negative pressure type engine, it is by body, cylinder, cylinder cover, piston, combustion system, valve actuating mechanism and bent axle even
Linkage parts form, and valve actuating mechanism is equipped with inlet valve and exhaust valve on cylinder cover；It is characterized in that, it is close with contacting of cylinder cover less than cylinder cover, inlet valve and exhaust valve that piston gap when top dead centre and between cylinder cover ensures that piston touches
Front cover is located at the end face of cylinder cover, and the piston whole cylinder space when lower dead center is as combustor, the atomizer of combustion system
It is arranged at the piston lower dead center of cylinder wall with spark plug.
2. the working cycle process of a negative pressure type engine as claimed in claim 1, it is characterised in that the first process, when
Piston is when top dead centre starts descending, and IO Intake Valve Opens, exhaust valve closing, filtered device filtered air enters combustor, lives
Plug is when coming downwards to lower dead center, IC Intake Valve Closes, and atomizer is opened and plug ignition, and the moment exhaust valve of igniting is opened therewith,
And moment closedown；Second backhaul, piston moves up from lower dead center under suction function, exhaust valve when the piston is near the top dead centre
Opening, waste gas is gone out, and proceeds to the first process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056745.0A CN102588105B (en) | 2012-03-06 | 2012-03-06 | Negative pressure type engine and working cycle process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056745.0A CN102588105B (en) | 2012-03-06 | 2012-03-06 | Negative pressure type engine and working cycle process thereof |
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| Publication Number | Publication Date |
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| CN102588105A CN102588105A (en) | 2012-07-18 |
| CN102588105B true CN102588105B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210056745.0A Active CN102588105B (en) | 2012-03-06 | 2012-03-06 | Negative pressure type engine and working cycle process thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104100375A (en) * | 2014-06-09 | 2014-10-15 | 戴跃东 | Heat recovery negative pressure power engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517638A (en) * | 1978-07-21 | 1980-02-07 | Kenzaburo Fukushima | Four cycle internal combustion engine |
| CN2103010U (en) * | 1991-08-11 | 1992-04-29 | 李凤纲 | Two-cycle petrol engine scavenging system |
| DE19861044A1 (en) * | 1998-12-14 | 2000-06-15 | Andre Wiedemann | Cylinder of three-stroke internal combustion engine has cylinder head on both ends and in center section has oil holes for guiding piston and for lubrication of bearing surfaces |
| CN1299439A (en) * | 1998-05-04 | 2001-06-13 | 美国库宇纳发动机股份公司 | Multi-fuel engine |
| CN202031713U (en) * | 2011-04-28 | 2011-11-09 | 苗军 | Engine with closed cylinder port |
-
2012
- 2012-03-06 CN CN201210056745.0A patent/CN102588105B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517638A (en) * | 1978-07-21 | 1980-02-07 | Kenzaburo Fukushima | Four cycle internal combustion engine |
| CN2103010U (en) * | 1991-08-11 | 1992-04-29 | 李凤纲 | Two-cycle petrol engine scavenging system |
| CN1299439A (en) * | 1998-05-04 | 2001-06-13 | 美国库宇纳发动机股份公司 | Multi-fuel engine |
| DE19861044A1 (en) * | 1998-12-14 | 2000-06-15 | Andre Wiedemann | Cylinder of three-stroke internal combustion engine has cylinder head on both ends and in center section has oil holes for guiding piston and for lubrication of bearing surfaces |
| CN202031713U (en) * | 2011-04-28 | 2011-11-09 | 苗军 | Engine with closed cylinder port |
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| CN102588105A (en) | 2012-07-18 |
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