CN105370337A - Series-connection valve speed control system of spark ignition type internal combustion engine - Google Patents
Series-connection valve speed control system of spark ignition type internal combustion engine Download PDFInfo
- Publication number
- CN105370337A CN105370337A CN201510791445.0A CN201510791445A CN105370337A CN 105370337 A CN105370337 A CN 105370337A CN 201510791445 A CN201510791445 A CN 201510791445A CN 105370337 A CN105370337 A CN 105370337A
- Authority
- CN
- China
- Prior art keywords
- valve
- internal combustion
- control system
- air
- combustion engine
- 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.)
- Granted
Links
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention provides a series-connection valve speed control system (SVSC) of a spark ignition type internal combustion engine. An air inlet control system is composed of a front inlet valve and a rear inlet valve which are connected in series, and a throttle valve of a traditional spark ignition type internal combustion engine is omitted. One inlet valve, the same as an inlet valve of an original engine, is of a traditional inlet valve structure and a control mode and is defined as the rear inlet valve. The other inlet valve is defined as the front inlet valve. The opening overlapping angle of the two inlet valves is controlled by controlling the opening time of the front inlet valve, and therefore the air inflow of air entering an engine cylinder is controlled and the purpose of adjusting the engine is achieved. The throttle valve is omitted, the pump gas loss of the engine is reduced, and the economical efficiency of the engine is improved. A computer is used for controlling the opening time of the front inlet valve, so that control over the optimal inlet lag angle under the big load condition is achieved very easily. The series-connection valve speed control system (SVSC) of the spark ignition type internal combustion engine is simple in structure, is low in cost and has great significance on saving energy for the engine, and the original engine is modified little.
Description
Technical field
The invention belongs to technical field of internal combustion engines, relate to Valve System of Internal Combustion Engine, particularly a kind of ignition internal combustion engine series connection valve speed control system (SVSC).
Background technique
Ignition internal combustion engine Load Regulation relies on to regulate throttle opening control air inflow to complete, and what control entered cylinder air amount is closure, namely by the throttling action of closure, controls the air inflow needed for motor.When throttle opening hour, motor pumping loss increases, and motor Economy is deteriorated.
The air inflow that during low-load, motor needs is few, and throttle opening is little, and throttling action increases, and air enters cylinder needs corresponding air-breathing merit to increase, and namely pumping loss increases, and oil consumption increases.
During large load, motor is at a high speed, wishes larger air inlet retardation angle, to reaching many air inlets object by the inertia of high velocity air; During low speed, wish less air inlet retardation angle, prevent the mixed gas entering cylinder from flowing back to air intake branch.Engine operation is in different operating mode, and phase place has different air inlet retardation angle, and according to the gas distribution system of certain operating condition design once complete design, its port timing just immobilizes.
At present, the motor adjustment of traditional ignition internal combustion engine is controlled by throttle opening, and under medium and small load condition, due to the throttling action of closure, the pumping loss of motor is very large, thus affects the Economy of motor under middle Smaller load.In order to solve the problems of spark-ignition engine gas handling system, very large effort has been made in countries in the world.
Making a general survey of the optimization of various countries to gas distribution system, is the research for changeable air valve mostly.Changeable air valve technology can be divided into Variable Valve Time control substantially, lift range variable controls or both variable controls simultaneously.The means realizing above-mentioned control have changeable cam molded line, variable cam driven member, variable cam phase place, Zona free etc.No matter any method, except complex structure, involve great expense except, mostly really eliminate the pumping loss that closure brings.At present, the Valvetronic structure of BMW company is only had can to realize the load control manner of non-air throttle.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of ignition internal combustion engine series connection valve speed control system (SVSC), the intake valve that this system is connected by former and later two forms air intake control system, eliminates the closure of traditional ignition internal combustion engine.An intake valve is the same with former engine intake valve, adopt traditional intake valve structure and control mode, be defined as rear intake valve, another intake valve is defined as front intake valve, the unlatching overlapping angle of two valves is controlled by the start-up time controlling front intake valve, thus control the air inflow entering cylinder, reach the object regulating motor.
For achieving the above object, technological scheme of the present invention is:
The gas distribution system of ignition internal combustion engine series connection valve speed control system (SVSC) comprises the crankshaft gear 10 front intake valve 1, front inlet valve cam 2, rear inlet valve cam 3, rear intake valve 4, front valve, EFI mouth 5, fuel oil mixing chamber 6, cylinder 7, exhaust valve cam 8, exhaust valve 9, bent axle controlling distribution, front inlet valve cam phase controller 11, front inlet valve cam gear 12, rear inlet valve cam gear 13, exhaust valve cam gear 14 and distribution chain 15.Described fuel mixing chamber is made up of valve after advancing 1 and rear intake valve 5, and engine air amount when its air quantity stored is not more than engine idle, namely fuel mixing chamber volume is as far as possible little.
Ignition internal combustion engine series connection valve speed control system comprises two intake valves, two intake valves are connected in series, the structure of rear intake valve is consistent with the intake valve of conventional engines with control mode, the opening and closing moment of the intake duration angle of front intake valve is variable, and the angular dimension of intake duration angle is certain; The unlatching frequency of two intake valves is consistent, has air inlet overlapping angle, i.e. the angle simultaneously opened of two intake valves; Air inlet overlapping angle is controlled by the phase angle between front inlet valve cam and rear inlet valve cam, that is: by controlling the unlatching initial point of front intake valve, regulate the air inlet overlapping angle of two intake valves; By controlling the size of air inlet overlapping angle, control the air inflow of motor;
Described air inlet overlapping angle size to change from φ 1 to φ 3 by φ 2: front intake valve when described φ 1 is idling and the air inlet overlapping angle of rear intake valve are minimum air inlet aperture; The air inlet overlapping angle of front intake valve and rear intake valve when φ 2 is Part load; φ 3 is the air inlet overlapping angle of the front intake valve of busy hour and rear intake valve, full admission aperture.
The intake duration angle of described front intake valve is greater than the intake duration angle of rear intake valve;
Engine air amount when the air quantity that described fuel mixing chamber stores is not more than engine idle, namely the volume of fuel mixing chamber is the smaller the better;
Form fuel mixing chamber between two described intake valves, fuel sprays and mixes with air into mixing chamber.
The working procedure of ignition internal combustion engine series connection valve speed control system (SVSC) is:
Front intake valve and rear intake valve are connected in series, along with crankshaft rotating, under front inlet valve cam controls, front intake valve is opened, now, intake valve is in closed condition, and air enters mixing chamber by front intake valve, and mixing chamber inner air pressure is consistent with the pressure before front intake valve.
Bent axle continues to rotate, and under rear inlet valve cam controls, rear intake valve is opened, and now, intake valve is still opened, at forward and backward IO Intake Valve Opens overlapping period, air in the past intake valve through after intake valve directly enter cylinder;
Bent axle continues rotation, and under front inlet valve cam controls, front IC Intake Valve Closes, air stops entering mixing chamber and cylinder, until rear inlet valve cam controls rear IC Intake Valve Closes, completes cylinder intake process.
Inlet valve cam phase controller before manipulation, IO Intake Valve Opens initial point before namely changing, thus change forward and backward IO Intake Valve Opens overlapping angle, change the air inflow entering cylinder.
For four-stroke gasoline engine, specialized by such scheme: certain petrol engine air admission advance angle is budc 10 °, closing retardation angle is 40 ° after bottom dead center, and intake duration angle is 230 °.The gas handling system of throttle control is changed into series connection valve speed control system (SVSC), remove, be connected in series an intake valve, claim rear intake valve by the intake valve of former machine by closure, the intake valve of new serial connection claims front intake valve.Form fuel mixing chamber between two intake valves, fuel oil is sprayed into fuel mixing chamber and completes air-fuel mixture at this by oil nozzle, and the air quantity that fuel mixing chamber is filled with is not more than the air quantity required for engine idle, and namely the volume of mixing chamber is the smaller the better.The unlatching duration angle of front intake valve is not less than 230 °, by regulating the unlatching initial point of front intake valve, regulates the overlapping angle of forward and backward intake valve to be 0 ° ~ 230 °, and at front and back IO Intake Valve Opens overlapping period, before air the past intake valve, state directly enters cylinder.If it is controlled by ECU that the unlatching initial point of front valve controls, then can determine best air inlet retardation angle according to throttle position signal and engine status signal.
Structure of the present invention is simple, with low cost, little to former engine modification, significant to engine energy-saving.Owing to eliminating the closure of traditional ignition internal combustion engine, make this system can reduce the air inlet pumping loss of middle-low load, the best air inlet that also can control under large load is closed angle and is regulated.By the start-up time of valve before conputer controlled, can be easy to realize the control of the best air inlet retardation angle under large load condition.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of four-stroke spark ignition motor of the present invention.
Fig. 2 is that distribution controls schematic diagram
Fig. 3 is front valve, rear valve valve lift curve schematic diagram
Fig. 4 is that native system controls air inlet overlapping angle plotted curve
In figure: intake valve before 1; Inlet valve cam before 2; Inlet valve cam after 3; Intake valve after 4; 5 EFI mouths; 6 fuel oil mixing chambers; 7 cylinders; 8 exhaust valve cams; 9 exhaust valves; 10 engine crankshaft gears; Inlet valve cam phase controller before 11; Inlet valve cam gear before 12; Inlet valve cam gear after 13; 14 exhaust valve cam gears; 15 distribution chains; Advance valve lift curve during 16 idling; 17 Part load advance valve lift curves; The advance valve lift curve of 18 maximum loads; 19 laggard valve lift curves; The unlatching air inlet overlapping angle of front intake valve and rear intake valve during 20 idling; The front intake valve of 21 Part load and rear IO Intake Valve Opens air inlet overlapping angle; The air inlet overlapping angle of the front intake valve of 22 busy hour and rear IO Intake Valve Opens.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
The gas distribution system of valve speed control system (SVSC) of connecting in this example comprises front intake valve 1, front inlet valve cam 2, rear inlet valve cam 3, rear intake valve 4, the fuel oil mixing chamber 6 that front valve, EFI mouth 5, the rear valve 1 that advances form with rear intake valve 5, cylinder 7, exhaust valve cam 8, exhaust valve 9, bent axle controls the crankshaft gear 10 of distribution, front inlet valve cam phase controller 11, front inlet valve cam gear 12, rear inlet valve cam gear 13, exhaust valve cam gear 14, distribution chain 15.
Fig. 2 is the distribution control procedure of ignition internal combustion engine series connection valve speed control system: the crankshaft gear 10 of motor is connected with exhaust valve cam 8 gear, rear inlet valve cam 3 gear and front inlet valve cam 2 gear by chain 15, its speed ratio is 2:1, namely bent axle turns 720 °, exhaust valve cam 9, rear inlet valve cam 3, front inlet valve cam 2 turns 360 °.The phase angle that front inlet valve cam phase controller 11 controls between front inlet valve cam 12 and rear inlet valve cam 13 changes, phase angle between front inlet valve cam gear 12 and rear inlet valve cam gear 13 changes, thus control intake valve overlapping angle, control the air inflow entering motor.
Fig. 3 is the front intake valve of various inlet overlapping angle, rear intake valve valve lift curve schematic diagram.The air inlet overlapping angle that lifting curve 16 and the lifting curve 19 of rear intake valve 4 of the front intake valve 2 during idling control is φ 1 in Fig. 4, the air inlet overlapping angle that lifting curve 16 and the lifting curve 19 of rear intake valve 4 of the front intake valve 2 of Part load control is φ 2 in Fig. 4, and the air inlet overlapping angle that lifting curve 16 and the lifting curve 19 of rear intake valve 4 of maximum load front intake valve 2 constantly control is φ 3 in Fig. 4.
Front intake valve 1 intake duration angle is φ a, and rear intake valve 4 intake duration angle is φ b, and φ a > φ b, the φ 1 in Fig. 4 is idle speed air admission overlapping angle, is minimum air inlet aperture.φ 3=φ b is full admission aperture.
The φ 2 controlling air inlet overlapping angle to change from φ 1 to φ 3, thus controls air input of engine by air, reaches and controls motor object.
Claims (10)
1. an ignition internal combustion engine series connection valve speed control system, it is characterized in that, comprise two intake valves, two intake valves are connected in series.
2. a kind of ignition internal combustion engine series connection valve speed control system according to claim 1, it is characterized in that, two described intake valve structures are as follows: the structure of an intake valve is consistent with the intake valve of conventional engines with control mode, are rear intake valve; Another intake valve is front intake valve;
The unlatching frequency of two intake valves is consistent, has overlapping angle, by controlling the size of overlapping angle, controls the air inflow of motor.
3. a kind of ignition internal combustion engine series connection valve speed control system according to claim 1 and 2, it is characterized in that, the opening and closing moment of described advance air valve air inlet duration angle is variable, intake duration angle angular dimension is certain, by regulating the unlatching initial point of front intake valve, regulate the overlapping angle of two intake valves.
4. a kind of ignition internal combustion engine series connection valve speed control system according to claim 1 and 2, it is characterized in that, described advance air valve air inlet duration angle is greater than the intake duration angle of rear intake valve.
5. a kind of ignition internal combustion engine series connection valve speed control system according to claim 3, it is characterized in that, described advance air valve air inlet duration angle is greater than the intake duration angle of rear intake valve.
6. a kind of ignition internal combustion engine series connection valve speed control system according to claim 1 or 2 or 5, is characterized in that, engine air amount when the air quantity that described fuel mixing chamber stores is not more than engine idle.
7. a kind of ignition internal combustion engine series connection valve speed control system according to claim 3, is characterized in that, engine air amount when the air quantity that described fuel mixing chamber stores is not more than engine idle.
8. a kind of ignition internal combustion engine series connection valve speed control system according to claim 4, is characterized in that, engine air amount when the air quantity that described fuel mixing chamber stores is not more than engine idle.
9. a kind of ignition internal combustion engine series connection valve speed control system according to claim 1 or 2 or 5 or 7 or 8, it is characterized in that, form fuel mixing chamber between two described intake valves, fuel sprays and mixes with air into mixing chamber.
10. a kind of ignition internal combustion engine series connection valve speed control system according to claim 3, it is characterized in that, form fuel mixing chamber between two described intake valves, fuel sprays and mixes with air into mixing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791445.0A CN105370337B (en) | 2015-11-17 | 2015-11-17 | A kind of ignition internal combustion engine series connection valve speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791445.0A CN105370337B (en) | 2015-11-17 | 2015-11-17 | A kind of ignition internal combustion engine series connection valve speed control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370337A true CN105370337A (en) | 2016-03-02 |
| CN105370337B CN105370337B (en) | 2017-12-26 |
Family
ID=55372889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510791445.0A Expired - Fee Related CN105370337B (en) | 2015-11-17 | 2015-11-17 | A kind of ignition internal combustion engine series connection valve speed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370337B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285959A (en) * | 2016-10-08 | 2017-01-04 | 潍柴西港新能源动力有限公司 | Natural gas engine is without electronic throttle intake-air quantity control apparatus and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416512A (en) * | 1943-04-23 | 1947-02-25 | Boorer Alfred | Valve gear of internal-combustion engines |
| JPS61178518A (en) * | 1985-02-03 | 1986-08-11 | Yuji Noguchi | 4-cycle engine to also carry out suction through exhaust valve |
| FR2629518B1 (en) * | 1988-03-31 | 1994-04-08 | Kerbrat Renaud | INTERNAL COMBUSTION ENGINE AND CYLINDER HEAD FOR SUCH AN ENGINE |
| CN1089688A (en) * | 1992-11-26 | 1994-07-20 | 谭善光 | The gas distributing device of common gas valve for charging gas and exhaust of internal-combustion engine |
| US5671704A (en) * | 1996-03-18 | 1997-09-30 | Peng; Huei | Cylinder head with colander valve |
| US6308681B1 (en) * | 1999-12-29 | 2001-10-30 | Hector A. Gubler | Valve-arrangement for controlling gas in a piston-type internal-combustion engine |
-
2015
- 2015-11-17 CN CN201510791445.0A patent/CN105370337B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416512A (en) * | 1943-04-23 | 1947-02-25 | Boorer Alfred | Valve gear of internal-combustion engines |
| JPS61178518A (en) * | 1985-02-03 | 1986-08-11 | Yuji Noguchi | 4-cycle engine to also carry out suction through exhaust valve |
| FR2629518B1 (en) * | 1988-03-31 | 1994-04-08 | Kerbrat Renaud | INTERNAL COMBUSTION ENGINE AND CYLINDER HEAD FOR SUCH AN ENGINE |
| CN1089688A (en) * | 1992-11-26 | 1994-07-20 | 谭善光 | The gas distributing device of common gas valve for charging gas and exhaust of internal-combustion engine |
| US5671704A (en) * | 1996-03-18 | 1997-09-30 | Peng; Huei | Cylinder head with colander valve |
| US6308681B1 (en) * | 1999-12-29 | 2001-10-30 | Hector A. Gubler | Valve-arrangement for controlling gas in a piston-type internal-combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285959A (en) * | 2016-10-08 | 2017-01-04 | 潍柴西港新能源动力有限公司 | Natural gas engine is without electronic throttle intake-air quantity control apparatus and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105370337B (en) | 2017-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2799952C (en) | Mid-cycle fuel injection strategies | |
| US9097190B2 (en) | Combustion control apparatus for an internal combustion engine | |
| US8037873B2 (en) | Residual burnt gas scavenging method with double intake valve lift in a direct-injection supercharged internal-combusion engine, notably of diesel type | |
| US8065988B2 (en) | Four-cycle engine | |
| US20130104544A1 (en) | Internal combustion engine and associated operating method | |
| CN103328775B (en) | There is quartastroke engine and the method for VVT | |
| CN102713213A (en) | Spark ignition type internal combustion engine | |
| CN103939223A (en) | Starting device of spark-ignition multi-cylinder engine | |
| US20150047584A1 (en) | Internal combustion engine having a plurality of exhaust ports per cylinder and charge exchange method for such an internal combustion engine | |
| US20140026873A1 (en) | Variable Miller Cycle for Reactivity Controlled Compression Ignition Engine and Method | |
| CN110242452A (en) | A kind of petrol engine intake system and air input control method | |
| CN105051355A (en) | Control device and control method for internal combustion engines | |
| US20160123268A1 (en) | Engine control device | |
| CN1863993B (en) | Method for optimizing the operation of a charged reciprocating internal combustion engine in the lower engine speed range | |
| CN100470028C (en) | Full behavior air/fuel ratio control method of double mode directly jetting gasoline engine | |
| TW201425717A (en) | Method and internal combustion engine for respective control of combustion elements in cylinders | |
| CN201794631U (en) | Air distribution phase adjusting device of engine | |
| CN105370337A (en) | Series-connection valve speed control system of spark ignition type internal combustion engine | |
| CN105401996B (en) | A kind of series connection valve speed control system for being rotationally advancing valve | |
| CN112377347B (en) | Engine compressed air supply system, engine and engine control method | |
| JP2015512482A (en) | Method of operating an internal combustion engine | |
| US20110174248A1 (en) | Residual burnt gas scavenging method in a direct-injection supercharged internal-combustion multi-cylinder engine | |
| CN211230660U (en) | Gasoline engine air intake system | |
| CN102933816A (en) | Spark ignition internal combustion engine | |
| CN102168615B (en) | Control method of EGR (exhaust gas recirculation) control system of engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20201117 |