CN108644010A - A kind of low-drag type gasoline engine - Google Patents
A kind of low-drag type gasoline engine Download PDFInfo
- Publication number
- CN108644010A CN108644010A CN201810456408.8A CN201810456408A CN108644010A CN 108644010 A CN108644010 A CN 108644010A CN 201810456408 A CN201810456408 A CN 201810456408A CN 108644010 A CN108644010 A CN 108644010A
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- China
- Prior art keywords
- valve
- cylinder
- air
- inlet pipe
- air inlet
- 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.)
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- 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
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention discloses a kind of low-drag type gasoline engines, including cylinder and crankcase, the cylinder is made of cylinder block and piston, it is provided with connecting rod in the crankcase, described connecting rod one end is connect with piston, the cylinder top setting combuster and reflux air flue, the cylinder top is provided with fuel injector, the cylinder side is provided with air inlet pipe, cylinder, which is located at air inlet pipe, is provided with inlet valve, the cylinder other side is provided with exhaust pipe, cylinder, which is located at exhaust pipe, is provided with exhaust valve, air flow meter is installed in the air inlet pipe, the air inlet pipe is connect by the tracheae that flows back with reflux air flue, it is provided with air throttle and valve for pressure difference on reflux tracheae.The present invention removes air throttle from air inlet pipe, to reduce the intake resistance in air inlet pipe, to reduce the pumping loss of gasoline engine.
Description
Technical field
The present invention relates to technology of gasoline engine field, specially a kind of low-drag type gasoline engine.
Background technology
For the gasoline engine of natural aspiration, fuel injector sprays into gasoline in air inlet pipe, makes gasoline and enters in air inlet pipe
Air be sufficiently mixed, later in petrol engine air admission stroke, due to the vacuum generated in cylinder in piston folding process
Degree, gaseous mixture are inhaled into from inlet valve in cylinder.In the process, the air throttle in air inlet pipe plays control air inflow
Effect, the aperture of air throttle are controlled by gas pedal.
When throttle opening is smaller, air velocity is slow in air inlet pipe, and the air inflow in the unit interval is small, corresponding
The distributive value of fuel injector is also small, and the gaseous mixture entered in cylinder at this time is few, and gasoline engine output power is small；When throttle opening is larger
When, air velocity is fast in air inlet pipe, and the air inflow in the unit interval is big, and the distributive value of corresponding fuel injector is also big, at this time
It is more into the gaseous mixture in cylinder, gasoline engine output power.
When gasoline engine is located at induction stroke, piston is moved down forms vacuum degree in cylinder, using the vacuum degree by air inlet pipe
In gaseous mixture sucking cylinder in, due to the inhibition of air throttle so that piston, which moves down, generates certain resistance in breathing process
Power, and the resistance needs the power by generation of doing work before engine to overcome, therefore in the intake stroke, needs consumption certain
Engine power, i.e., the mechanical energy that a part of engine generates, the mechanical energy of the partial loss is referred to as pumping loss.
It will be apparent that when throttle opening is smaller, then intake resistance is bigger, and engine is used for overcoming intake resistance and losing
Engine mechanical energy is more, i.e., pumping loss is bigger.Therefore, when engine is in underload working condition, the pump of engine
The ability that gas loss will seriously undermine engine and externally do work.
It is an object of the present invention to air throttle is removed from air inlet pipe, to reduce the intake resistance in air inlet pipe, from
And reduce the pumping loss of gasoline engine.
Invention content
The purpose of the present invention is to provide a kind of low-drag type gasoline engines, to reduce the pumping loss of gasoline engine.
To achieve the above object, the present invention provides the following technical solutions：A kind of low-drag type gasoline engine, including cylinder and bent axle
Case, the cylinder are made of cylinder block and piston, and connecting rod is provided in the crankcase, and described connecting rod one end is connect with piston,
The cylinder top setting combuster and reflux air flue, the cylinder top are provided with fuel injector, the cylinder side setting
There is air inlet pipe, cylinder, which is located at air inlet pipe, is provided with inlet valve, and fuel injector is used to spray into gasoline in air inlet pipe, the cylinder other side
Be provided with exhaust pipe, cylinder, which is located at exhaust pipe, is provided with exhaust valve, is equipped with air flow meter in the air inlet pipe, it is described into
Tracheae is tightly connected by the tracheae that flows back with reflux air flue, and air throttle and valve for pressure difference are provided on the tracheae that flows back.
Preferably, the valve for pressure difference is made of valve body, spring, valve block, guide rod, valve opening, guide hole and valve seat, is equipped in valve body
Valve seat is provided with guide hole in valve seat, guide rod is provided in guide hole, guide rod is connected with valve block, and valve block is provided with far from guide rod side
Spring, spring are set between valve block and valve interior wall.
Preferably, the guide rod is snug fit in the guide hole in valve body.
Preferably, the valve for pressure difference is located between air throttle and reflux air flue.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention removes air throttle from air inlet pipe, to subtract
Intake resistance in few air inlet pipe, to reduce the pumping loss of gasoline engine；Air throttle is set on reflux tracheae, utilizes solar term
Opening time and opening size of the door in compression stroke, to control the gaseous mixture quantity being back in air inlet pipe, to control
Remaining gaseous mixture quantity in cylinder, with this to control the power that gaseous mixture is sent out in each combustion process, realize reduce into
The technique effect of engine power is accurately controlled while atmidometer.
Using the cooperation between the spring, valve body and valve seat of valve for pressure difference, the effect of automatic open and close is realized, reaction is more
Sensitive, more rapidly, reliability higher improves protecting effect of the valve for pressure difference to air throttle, prevents high temperature and high pressure gas to solar term
The impact of door.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of valve for pressure difference of the present invention.
Fig. 3 is the structural schematic diagram of induction stroke of the present invention.
Fig. 4 is the structural schematic diagram of compression stroke of the present invention.
Fig. 5 is the structural schematic diagram of expansion stroke of the present invention.
Fig. 6 is the structural schematic diagram of exhaust stroke of the present invention.
In figure：1- crankcases；2- connecting rods；3- cylinder block；4- pistons；5- cylinders；6- inlet valves；7- air throttles；8- air inlets
Pipe；9- fuel injectors；The combustion chambers 10-；11- exhaust pipes；12- exhaust valves；13- air flow meters；14- reflux air flues；15- pressure differences
Valve；150- valve bodies；151- springs；152- valve blocks；153- guide rods；154- valve openings；155- guide holes；156- valve seats；16- backflow gas
Pipe.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
- 6 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of low-drag type gasoline engine, including cylinder 5 and crankcase
1, cylinder 5 is made of cylinder block 3 and piston 4, connecting rod 2 is provided in crankcase 1,2 one end of connecting rod is connect with piston 4, on cylinder 5
Combuster 10 and reflux air flue 14 is arranged in portion, and 5 top of cylinder is provided with fuel injector 9, and 5 side of cylinder is provided with air inlet pipe 8, spray
Oily device 9 is used to spray into gasoline in air inlet pipe 8, and cylinder 5, which is located at air inlet pipe 8, is provided with inlet valve 6, and fuel injector 9 sprays gasoline
Enter in air inlet pipe 8,5 other side of cylinder is provided with exhaust pipe 11, and cylinder 5, which is located at exhaust pipe 11, is provided with exhaust valve 12, air inlet
Air flow meter 13 is installed, air inlet pipe 8 is tightly connected by the tracheae 16 that flows back with reflux air flue 14, and flow back tracheae 16 on pipe 8
On be provided with air throttle 7 and valve for pressure difference 15, valve for pressure difference 15 by valve body 150, spring 151, valve block 152, guide rod 153, valve opening 154,
Guide hole 155 and valve seat 156 form, and valve seat 156 is equipped in valve body 150, guide hole 155 is provided on valve seat 156, is set in guide hole 155
It is equipped with guide rod 153,153 outer end of guide rod is connected with valve block 152, and valve block 152 is provided with spring 151, spring far from 153 side of guide rod
151 are set between 150 inner wall of valve block 152 and valve body, and guide rod 153 is snug fit in the guide hole 155 in valve body, valve for pressure difference 15
Between air throttle 7 and reflux air flue 14.
Operation principle：1, induction stroke：Inlet valve 6 is opened, exhaust valve 12 is closed, and 4 downlink of piston, extraneous air enters
Air inlet pipe 8, air directly reach air inlet pipe end after air flow meter 13, the fuel injector 9 of 8 end of air inlet pipe into
Gasoline is sprayed into tracheae 8, the mixed gaseous mixture of gasoline of air and penetrating is entered by inlet valve 6 in cylinder 5；At this point, section
Valve 7 completely closes, to prevent to cause to flow back due to the negative pressure in induction stroke, in cylinder 5 the gas warp in tracheae 16
It crosses reflux air flue 14 to be reversed in sucking cylinder, the air in air inlet pipe 8 is also prevented to enter cylinder 5 by reflux tracheae 16
It is interior；During this, due to there is no the obstruction of air throttle 7 in air inlet pipe 8, so intake resistance smaller, pumping loss smaller, air inlet
It is more efficient；As a preferred embodiment, in the intake stroke, 7 standard-sized sheet of air throttle, to make a part of outside air pass through backflow gas
Pipe 16, reflux air flue 14 enter in cylinder 5, increase an inlet channel, improve the air inflow in the unit interval, further
Improve intake efficiency.
2, compression stroke：Inlet valve 6, exhaust valve 12 are all closed, 4 uplink of piston, adjust the aperture of air throttle 7 as needed
And the opening time, make the gaseous mixture in a part of cylinder 5 under the effect of uplink piston 4, by the air flue 14 that flows back, reflux tracheae 16
On valve for pressure difference 15, return in air inlet pipe 8 after air throttle 7, and with the air newly entered in next induction stroke again into
Enter in cylinder 5；In this process, the mixed gas flow of reflux is adjusted using the aperture and opening time of air throttle 7, to make to stay
Gaseous mixture quantity in cylinder 5 becomes actually required amount；Since in the stroke, the atmospheric pressure value in cylinder 5 is relatively low, valve block 152
The pressure difference of both sides is less than the setting value of its closing, and therefore, reflux gas can be smoothly through valve for pressure difference 15.
3, expansion stroke：Inlet valve 6, exhaust valve 12 and air throttle 7 are all closed, spark ignitor gaseous mixture, after burning
High temperature and pressure exhaust gas pushes piston 4 from top dead centre downlink, 152 right side of valve block of the valve for pressure difference 15 of high pressure exhaust gas arrival at this time, valve block
The pressure difference of 152 arranged on left and right sides is more than setting value, and valve block 152 overcomes the pulling force of spring 151 to be moved to the left and is pressed in valve seat 156
On, to close valve opening 154, the gas on 152 right side of valve block is hindered to enter in valve opening 154；To prevent the high temperature after burning high
Backblast air throttle 7 is pressed, air throttle 7 is protected not to be damaged.
4, exhaust stroke：Exhaust valve 12 is opened, and inlet valve 6, air throttle 7 are still closed, 4 uplink of piston, useless in cylinder 5
Gas is extruded by piston 4 from exhaust valve 12；At this point, due in cylinder exhaust gas pressure it is still higher, the air pressure on the right side of valve block 152 is far super
Air pressure on the left of it, valve block 152 are pressed closely against under the differential pressure action of both sides, still on valve seat 156, and valve for pressure difference 15 is in pass
Closed state；Engine carries out induction stroke again later, moves in circles.
It is from cylinder 5 by the gas that air throttle 7 flows back in the above-mentioned complete job cycle being made of four strokes
Interior air, the gasoline mixture for coming out, being mixed into petrol molecule, but the gaseous mixture enters air mass flow by reflux tracheae 16
In the air inlet pipe 8 for counting rear, and as the air newly entered in air inlet pipe 8 is inhaled into cylinder 5 in next induction stroke together
It is interior；So metering of the gaseous mixture being back in air inlet pipe 8 without air flow meter 13, air flow meter 13 only measures entrance
Air inlet pipe 8 in outside air total amount, certain ratio is sprayed to the end of air inlet pipe 8 according to the air overall control fuel injector 9
The gasoline of example, makes gasoline match with air total amount.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of low-drag type gasoline engine, including cylinder (5) and crankcase (1), it is characterised in that：The cylinder (5) is by cylinder block
(3) it is formed with piston (4), is provided with connecting rod (2) in the crankcase (1), described connecting rod (2) one end is connect with piston (4), institute
Cylinder (5) top setting combuster (10) and reflux air flue (14) are stated, cylinder (5) top is provided with fuel injector (9), sprays
Oily device (9) is used to spray into gasoline in air inlet pipe (8), and cylinder (5) side is provided with air inlet pipe (8), cylinder (5) be located at into
Inlet valve (6) is provided at tracheae (8), cylinder (5) other side is provided with exhaust pipe (11), and cylinder (5) is located at exhaust pipe
(11) it is provided with exhaust valve (12) at, air flow meter (13) is installed on the air inlet pipe (8), the air inlet pipe (8) passes through
The tracheae (16) that flows back is tightly connected with reflux air flue (14), and air throttle (7) and valve for pressure difference (15) are provided on reflux tracheae (16).
2. a kind of low-drag type gasoline engine according to claim 1, it is characterised in that：The valve for pressure difference (15) is by valve body
(150), spring (151), valve block (152), guide rod (153), valve opening (154), guide hole (155) and valve seat (156) composition, valve body
(150) it is equipped with valve seat (156) in, guide hole (155) is provided in valve seat (156), guide rod (153) is provided in guide hole (155), leads
Bar (153) outer end is connected with valve block (152), and valve block (152) is provided with spring (151), spring far from guide rod (153) side
(151) it is set between valve block (152) and valve body (150) inner wall.
3. a kind of low-drag type gasoline engine according to claim 2, it is characterised in that：The guide rod (153) is snug fit at
In guide hole (155) in valve body.
4. a kind of low-drag type gasoline engine according to claim 1, it is characterised in that：The valve for pressure difference (15) is located at air throttle
(7) between reflux air flue (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810456408.8A CN108644010B (en) | 2018-05-14 | 2018-05-14 | Low-resistance gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810456408.8A CN108644010B (en) | 2018-05-14 | 2018-05-14 | Low-resistance gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108644010A true CN108644010A (en) | 2018-10-12 |
| CN108644010B CN108644010B (en) | 2020-08-25 |
Family
ID=63755208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810456408.8A Active CN108644010B (en) | 2018-05-14 | 2018-05-14 | Low-resistance gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644010B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0639708A1 (en) * | 1993-08-19 | 1995-02-22 | Audi Ag | Method for operating a vehicular internal combustion engine |
| DE19612451A1 (en) * | 1996-03-28 | 1997-10-02 | Siemens Ag | Intake system for an internal combustion engine |
| CN101818708A (en) * | 2010-04-22 | 2010-09-01 | 杨更新 | Electronic fuel injection internal combustion engine without throttle plate |
| CN102121437A (en) * | 2010-01-08 | 2011-07-13 | 福特环球技术公司 | System and method for providing intake air to engine in vehicle |
| CN102477877A (en) * | 2010-11-24 | 2012-05-30 | 南京理工大学 | Efficient and quick starting method of engine applying solenoid-driven valves |
| CN103270288A (en) * | 2011-08-24 | 2013-08-28 | 丰田自动车株式会社 | Fluid control device and fuel supply system |
| CN104343590A (en) * | 2013-08-08 | 2015-02-11 | 福特环球技术公司 | Systems and methods for multiple aspirators for a constant pump rate |
-
2018
- 2018-05-14 CN CN201810456408.8A patent/CN108644010B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0639708A1 (en) * | 1993-08-19 | 1995-02-22 | Audi Ag | Method for operating a vehicular internal combustion engine |
| DE19612451A1 (en) * | 1996-03-28 | 1997-10-02 | Siemens Ag | Intake system for an internal combustion engine |
| CN102121437A (en) * | 2010-01-08 | 2011-07-13 | 福特环球技术公司 | System and method for providing intake air to engine in vehicle |
| CN101818708A (en) * | 2010-04-22 | 2010-09-01 | 杨更新 | Electronic fuel injection internal combustion engine without throttle plate |
| CN102477877A (en) * | 2010-11-24 | 2012-05-30 | 南京理工大学 | Efficient and quick starting method of engine applying solenoid-driven valves |
| CN103270288A (en) * | 2011-08-24 | 2013-08-28 | 丰田自动车株式会社 | Fluid control device and fuel supply system |
| CN104343590A (en) * | 2013-08-08 | 2015-02-11 | 福特环球技术公司 | Systems and methods for multiple aspirators for a constant pump rate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108644010B (en) | 2020-08-25 |
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