CN109083743A - Pre- pressurization active air intake-exhaust changes noncondensing engine - Google Patents
Pre- pressurization active air intake-exhaust changes noncondensing engine Download PDFInfo
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- CN109083743A CN109083743A CN201810881802.6A CN201810881802A CN109083743A CN 109083743 A CN109083743 A CN 109083743A CN 201810881802 A CN201810881802 A CN 201810881802A CN 109083743 A CN109083743 A CN 109083743A
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- engine
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- exhaust gas
- compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0261—Controlling the valve overlap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- 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
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- 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
Pre- pressurization active air intake-exhaust changes noncondensing engine, belong to internal combustion engine, on the basis of existing common four-stroke engine, increase whole pressure charging system, air distribution system inlet valve, exhaust valve once becomes each circle opening and closing once from every two circles opening and closing, working frequency doubles, intake and exhaust work opportunity is changed to unanimous on the whole, inlet valve and the overlapping range that exhaust valve is opened jointly are more much larger than the range individually opened, quickly punching row ventilation is carried out to exhaust gas inside cylinder using the air from pressure charging system, remove most of exhaust gas, then compressed action, expansion stroke stroke ratio compression stroke stroke is more, expansion ratio is greater than compression ratio, this is the Miller cycle that the exhaust gas in most simple cylinder is recycled plus is most simple and efficient, igniting, it is primary that fuel supply once becomes a circle from two circles under control of the control system, one circle acting is primary, Fuel combustion is abundant, high-efficient, power per liter is high, power is smooth, discharges.
Description
Technical field
It is that pre- pressurization active air intake-exhaust changes noncondensing engine the present invention relates to internal combustion engine.
Background technique
Available engine work is generally by four intake stroke, compression stroke, expansion stroke, exhaust stroke strokes, two circles
Complete one circulation, only expansion stroke does positive work, other three strokes do negative work, " three against one " and cause actual efficiency than reason
Much lower by efficiency, existing two-cycle engine, which uses, drives stomata and venthole at cylinder both ends, and structure determines this hair
Motivation pollution is big, wastes fuel.
Summary of the invention
In order to overcome it is existing there are four the every two circles expansion stroke actings of Stroke Engine once and existing two-cycle engine
Pollution is big, wastes the problem of fuel, and the present invention provides pre- pressurization active air intake-exhaust and changes noncondensing engine, the engine structure
It is similar with existing four-stroke engine, but a circle acting is primary, and fuel combustion is abundant, discharges, is high-efficient, power per liter is high, dynamic
Power is smooth.
The technical solution adopted by the present invention to solve the technical problems is:
On the basis of existing common four-stroke engine, increase whole pressure charging system, by booster compressor, radiator,
The composition such as sensor, provides the mesolow compressed air higher than an atmospheric pressure for engine, and engine speed is higher, pressurization system
The compressed air pressure provided of uniting is higher.
On the basis of existing common four-stroke engine, air distribution system inlet valve, exhaust valve by every two circles opening and closing one
Secondary to become each circle opening and closing once, working frequency doubles, and air distribution system intake and exhaust work opportunity is changed to substantially
Unanimously, the overlapping range that inlet valve and exhaust valve are opened jointly is more much larger than the range individually opened.When engine expansion stroke
When close to the lower dead center of piston downlink, exhaust valve is opened, and starts to be vented, and air pressure is close to atmospheric pressure in cylinder quickly, at this moment inlet valve
Also it opens, the air from pressure charging system higher than atmospheric pressure is rapidly performed by punching row's ventilation to exhaust gas inside cylinder, removes big portion
Divide exhaust gas, be then turned off exhaust valve, and then air inlet terminates to close inlet valve, then compresses oil spout (there are also light a fire for gasoline engine) and does
Function.The opportunity of closing of inlet valve exhaust valve during piston stroking upward is different according to the difference of purpose of design, most
In number situation, pursuit is high efficiency, at this time be can be used the slightly lower of the pressure control of whole pressure charging system, then
Exhaust process is changed with much longer, due to the presence of whole pressure charging system, inlet valve exhaust valve can be in piston stroking upward to whole
A stroke it is more than 50% when close, in this way acting stroke it is more than compression stroke stroke, expansion ratio be greater than compression ratio, this be letter
Single exhaust gas inside cylinder recycling combines the Miller cycle (Atkinson cycle) being more simple and efficient, while can cooperate thin combustion
It burns；In the case where some will pursue promotion power situation, at this time can be used the higher of the pressure control of whole pressure charging system, then
Match it is more shorter change exhaust process, due to the presence of whole pressure charging system, inlet valve exhaust valve can be arrived in piston stroking upward
The 30% of entire stroke even can less be completed to take a breath and close, and at this moment the power per liter of engine can achieve existing nature
Twice of the power per liter of air-breathing four-stroke engine.Route-variable air distribution system and machine can be passed through by pursuing high efficiency and high power
Tool pressure charging system switches in a certain range.For the efficiency for improving waste air, the power loss of waste air is reduced, to inlet valve
Structure make it is suitably modified, valve change it is small change sharp, inlet valve air flue adds baffle close to cylinder cover center side, is conducive to compressed gas
It is flushed on the piston of cylinder bottom along casing wall；It is to improve another structure design of waste air efficiency, by the air distribution system of engine
Inlet valve, exhaust valve by being all changed to exhaust valve on cylinder head on cylinder head, be changed to for inlet valve being transferred on cylinder block, it is former
The inlet and exhaust valve on cylinder head come all makees exhaust valve or cancellation or part is reserved for exhaust valve.
On the basis of existing common four-stroke engine, igniting, fuel supply are under control of the control system by two circles
It is primary once to become a circle, appropriate reinforce of radiating.
The beneficial effects of the present invention are:
It is high-efficient, although increasing engine driven supercharging, many energy are consumed, are the reduction of exhaust stroke, intake stroke
The friction consumption of the two strokes one circle, and has the raising of utilization of the Miller cycle to energy, thus whole efficiency have it is certain
It is promoted.
High power volume, power per liter is big, high power specific gravity, can achieve 2 times of existing same discharge capacity naturally aspirated engine
More than, because it is a circle, acting is primary, and has pressure charging system.
The slow-speed of revolution just has large torque, because can provide more air by pressure charging system, and expansion stroke frequency mentions
It doubles.
High efficiency and high power can be switched by air distribution system and pressure charging system, change work greatly for power demand
Condition, such as lorry, this can also reduce oil consumption.
Power is smooth, because the frequency of expansion stroke doubles.
It discharges, because included exhaust gas recycling, may be implemented lean burn.
Detailed description of the invention
The following further describes the present invention with reference to the drawings, and attached drawing only illustrates principle.
Attached drawing is the engines distribution figure that engine operates a circulation (one week, 360 degree).
In figure: the expansion stroke of ∠ BOC Range Representation piston downlink under high-temperature high-pressure fuel gas effect since top dead centre；
∠ COG Range Representation active air intake-exhaust changes exhaust process, and vertical line dash area indicates that exhaust gas inside cylinder content is more next in operation
Fewer, grid lines dash area indicates that air content is more and more in operation in cylinder；∠ GOA Range Representation piston is to air pressure
The compression stroke of contracting.
OB indicates that piston runs to top dead centre, and OE indicates that piston runs to lower dead center, and OA indicates ignition location or diesel engine
Oil spout position, ∠ AOB are ignition advance angle or fuel injection beginning of diesel engine, and OC indicates that exhaust valve starts open position, and OD is indicated
Inlet valve starts open position, and OF indicates exhaust valve closing position, and the gas that changes gear is completed, and OG indicates IC Intake Valve Closes position, air inlet
It completes, what ∠ DOF expression inlet valve, exhaust valve were all opened changes exhaust gas region, and what ∠ COD expression exhaust valve was first opened lets out removing exhaust gas
The pressure release exhaust gas region of high pressure, ∠ FOG indicate that exhaust valve is first closed and pressure charging system are utilized to increase air inlet amount increase power afterwards
Region, ∠ COF indicate exhaust valve open exhaust gas region, ∠ DOG indicate inlet valve open admittance area, ∠ COE be row
Air lift anterior angle.
Specific embodiment
On the basis of existing common four-stroke engine, increase whole pressure charging system, by booster compressor, radiator,
The composition such as sensor.There are three types of the specific embodiments of compression portion: 1, individual engine driven supercharging compressor, the disadvantage is that waste
More energy；2, engine driven supercharging compressor and exhaust gas turbocharge compressor use simultaneously, are in sensor and electronic control
It unites under ECU control, the slow-speed of revolution is mainly by engine driven supercharging compressor operating, and machinery booster compressor makes up exhaust gas turbine when high revolving speed
The deficiency of booster compressor boosting capability；3, engine driven supercharging compressor and exhaust gas turbocharge compressor are made of one, specifically
Be exactly in exhaust gas turbocharge compressor to increase electric motor with speed, and increase charging turbine volume, in sensor and electronic control
Under system ECU control, the slow-speed of revolution is mainly by motor drive charging turbine, and exhaust gas turbine auxiliary, high revolving speed is mainly by exhaust gas whirlpool
Wheel drive charging turbine, motor auxiliary；Gas is supplied to gas handling system by radiator cooling after pressurization.
On the basis of existing common four-stroke engine, air distribution system inlet valve, exhaust valve by every two circles opening and closing one
Secondary to become each circle opening and closing once, working frequency doubles, and air distribution system intake and exhaust work opportunity is changed to substantially
Unanimously, the overlapping range that inlet valve and exhaust valve are opened jointly is more much larger than the range individually opened: when engine expansion stroke
Close to piston downlink range when, exhaust valve is opened, start to be vented, quickly in cylinder air pressure close to atmospheric pressure, at this moment air inlet
Door is also opened, and the air from pressure charging system higher than atmospheric pressure carries out punching row's ventilation to exhaust gas inside cylinder, is removed most of useless
Gas is then turned off exhaust valve, and then closes inlet valve.The opportunity of closing of inlet and exhaust valve during piston stroking upward is according to setting
The purpose of timing is different and different, such as pursues high efficiency, low pressure pressure charging system can be used matches long stroke and change gear gas, intake and exhaust
Door piston stroking upward to entire stroke it is more than 50% when close, such as pursue high power per liter, using High Voltage pressure charging system match slightly
It is micro- shorter to change instroke.Air distribution system can also use route-variable air distribution system, route-variable air distribution system and increasing
Pressure system can switch the working condition between high efficiency and high power in a certain range under control system control.To improve
Waste air efficiency makees adaptation to the shape of inlet valve and stroke, valve change it is small change sharp, inlet valve air flue is close to cylinder cover
Center side adds baffle, is flushed on the piston of cylinder bottom conducive to compressed gas along casing wall；To improve waste air efficiency, Ling Yijie
Structure design is that inlet valve is transferred on cylinder block, and the inlet and exhaust valve on cylinder head originally all makees exhaust valve or cancels part guarantor
Part is stayed to make exhaust valve.In addition inlet valve is changed to electromagnetism inlet valve is also a good selection, can be convenient idling, efficiently
The switching of the operating conditions such as rate, high power.
On the basis of existing common four-stroke engine, igniting, fuel supply are under control of the control system by two circles
It is primary once to become a circle, heat dissipation is reinforced.
Claims (3)
1. pressurization active air intake-exhaust changes noncondensing engine in advance, by working system, lubricating system, fuel system, starting
Ignition system, control system, cooling system composition, it is characterized in that: engine has whole pressure charging system, provide for engine and are higher than
The mesolow compressed air of one atmospheric pressure；The each circle opening and closing of air distribution system inlet valve, the exhaust valve of engine is primary, inlet valve
Unanimous on the whole with exhaust valve opening and closing opportunity, the overlapping range that inlet valve and exhaust valve are opened jointly is greatly very than the range individually opened
More: when engine expansion stroke is close to the lower dead center of piston downlink, exhaust valve is opened, and starts pressure release waste air, quickly air inlet
Door is also opened, and the air higher than atmospheric pressure from pressure charging system carries out punching row's ventilation to exhaust gas inside cylinder, is removed most of useless
Gas is then turned off exhaust valve, and then closes inlet valve, then compresses oil spout acting；Engine under control of the control system,
Engine per revolution, igniting, fuel supply work are primary.
2. pre- pressurization active air intake-exhaust according to claim 1 changes noncondensing engine, it is characterized in that: engine is complete
Journey pressure charging system has compressor, radiator, sensor, and wherein compressor is particularly: individual engine driven supercharging compressor；Or
Engine driven supercharging compressor uses simultaneously with exhaust gas turbocharge compressor, under sensor and electronic control system control, low turn
Speed is by engine driven supercharging compressor operating, and high revolving speed is mainly by exhaust gas turbocharge compressor operating, engine driven supercharging compressor auxiliary；
Or engine driven supercharging compressor is combined as a whole with exhaust gas turbocharge compressor: increasing revolving speed electricity in exhaust gas turbocharge compressor
Motivation, and charging turbine volume is increased, under sensor and electronic control system control, the slow-speed of revolution is mainly increased by motor drive
Turbine, exhaust gas turbine auxiliary are pressed, high revolving speed mainly drives charging turbine, motor auxiliary by exhaust gas turbine.
3. pre- pressurization active air intake-exhaust according to claim 1 changes noncondensing engine, it is characterized in that: engine is matched
The inlet valve of gas system, exhaust valve all on cylinder head or exhaust valve in the enterprising valve of cylinder head on cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810881802.6A CN109083743A (en) | 2018-07-30 | 2018-07-30 | Pre- pressurization active air intake-exhaust changes noncondensing engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810881802.6A CN109083743A (en) | 2018-07-30 | 2018-07-30 | Pre- pressurization active air intake-exhaust changes noncondensing engine |
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| Publication Number | Publication Date |
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| CN109083743A true CN109083743A (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810881802.6A Withdrawn CN109083743A (en) | 2018-07-30 | 2018-07-30 | Pre- pressurization active air intake-exhaust changes noncondensing engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365121A (en) * | 2019-12-31 | 2020-07-03 | 钱裕智 | Linear range-extending generator driven by pre-supercharging exhaust-gas-changing free piston engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178023A (en) * | 2006-11-06 | 2008-05-14 | 王治平 | Three-stroke engine |
| CN103016136A (en) * | 2012-12-14 | 2013-04-03 | 西华大学 | High-supercharged two-stroke direct injection engine and ventilation method thereof |
| CN107420195A (en) * | 2017-06-28 | 2017-12-01 | 周天宇 | A kind of Two stroke engine and method based on four-stroke engine |
-
2018
- 2018-07-30 CN CN201810881802.6A patent/CN109083743A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178023A (en) * | 2006-11-06 | 2008-05-14 | 王治平 | Three-stroke engine |
| CN103016136A (en) * | 2012-12-14 | 2013-04-03 | 西华大学 | High-supercharged two-stroke direct injection engine and ventilation method thereof |
| CN107420195A (en) * | 2017-06-28 | 2017-12-01 | 周天宇 | A kind of Two stroke engine and method based on four-stroke engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365121A (en) * | 2019-12-31 | 2020-07-03 | 钱裕智 | Linear range-extending generator driven by pre-supercharging exhaust-gas-changing free piston engine |
| CN111365121B (en) * | 2019-12-31 | 2022-08-05 | 钱裕智 | Linear range-extending generator driven by pre-supercharging exhaust-gas-changing free piston engine |
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Application publication date: 20181225 |
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| WW01 | Invention patent application withdrawn after publication |