CN101858281A - Air inlet sectioning device for internal combustion engine - Google Patents
Air inlet sectioning device for internal combustion engine Download PDFInfo
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- CN101858281A CN101858281A CN201010142612A CN201010142612A CN101858281A CN 101858281 A CN101858281 A CN 101858281A CN 201010142612 A CN201010142612 A CN 201010142612A CN 201010142612 A CN201010142612 A CN 201010142612A CN 101858281 A CN101858281 A CN 101858281A
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- combustion engine
- suction tude
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
- F02M35/108—Intake manifolds with primary and secondary intake passages
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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
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0412—Multiple heat exchangers arranged in parallel or in series
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses an air inlet sectioning device for an internal combustion engine in the field of four-stroke internal combustion engines. The device comprises at least one air inlet passage and at least two air inlet pipes; an air inlet aid control valve is arranged between the air inlet passage and the air inlet pipes; and when the opening and closing of the air inlet aid control valve are timed, the air inlet process of the air inlet passage is divided into at least two air inlet durations, and the air inlet passage is sequentially communicated with the corresponding air inlet pipes in the divided air inlet durations respectively. When the air inlet sectioning device is applied to the four-stroke internal combustion engine, gases with different components and/or gases with different pressures can be sectioned and sequentially pass through the air inlet passage in different air inlet durations to enter a cylinder so as to reduce the discharge of the internal combustion engine and/or improve the transient response performance of a turbocharged engine.
Description
Technical field
The present invention relates to quartastroke engine, particularly the gas handling system of quartastroke engine.
Background technique
Internal-combustion engine came out over more than 100 year, and its technology obtains rapid progress, and along with the strictness year by year of various countries' Abgasgesetz and fuel consume rules, the four-stroke ic machine technology is obtained develop rapidly especially.It all is the major measure that realize the burning of internal-combustion engine high-efficiency cleaning that external exhaust gas recirculation technology, homogeneous compression-ignition ignition technique; Supercharging (comprising pressurization systems such as charge inter cooling, two-stage supercharging, sequential pressurizing, down together) technology is that combustion engine powered property, fuel economy and discharging are all improved.
Outside waste gas external recirculation: part waste gas is introduced burning once more in the cylinder, the oxygen content in the air inlet is reduced; CO in the waste gas, N2, H2O etc. have higher specific heat capacity, and polytropic index is low, can reduce maximum combustion temperature; CO2, inert gases such as N2 hinder burning, and velocity of combustion is reduced, thereby have suppressed the generation of NOx.Along with the increase of exhaust gas recirculation ratio, can slow down rate of burning, increase combustion duration, and the degree of perfection and the stability thereof of influence burning; Excess exhaust gas recirculation makes mixed gas be difficult to catch fire.If waste gas and inflammable mixture (or air) layer distributed, reduce the blending of waste gas and inflammable mixture, guarantee that ignition timing has the inflammable mixture that is suitable for catching fire, just can improve the stability of burning, just can improve stability of ignition, improve the tolerance of internal-combustion engine exhaust gas recirculation.The present external exhaust gas recirculation of using, control accuracy is low, also influences the uniformity of working between single cylinder simultaneously.
Homogeneous compression-ignition ignition technique: i.e. the homogeneous compression-ignition theory of catching fire, its essential characteristic is homogeneous, compression ignite, cold flame.This is a kind of combustion process of clean and effective, but its operating range is still waiting expansion, but have based on the multiple combustion method that the HCCI basic ideas derive out operating range is significantly widened, and still be kept the characteristics of the efficient minimum discharge of HCCI." stratified mixtures " looks like the conflicting thinking with HCCI, but it is actually a kind of " subregion homogeneous ", kept the HCCI core concept of multiple spot spontaneous combustion and low-temperature burning again simultaneously, thereby has the effect of the controlled and low oil consumption of the phase place of catching fire, low NOx.
Supercharging of internal combustion engine technology: be exactly to adopt special gas compressor that gas is compressed before entering cylinder in advance, improve the gas density that enters cylinder, reduce the volume of gas, like this, in per unit volume, the quality of gas has just increased greatly, and air inflow can satisfy the burning needs of fuel, thereby reaches the purpose that improves engine power.Boosting internal combustion engine has long shortcoming, especially turbocharging internal-combustion engines of accelerating process time at present; And centrifugal-flow compressor at flow hour, can cause compressor surge; During a plurality of joint work, diesel engine intake pressure has problems such as sudden change, control system complexity.
Behind the supercharging of internal combustion engine, the waste gas of waste gas, engine driven supercharging behind the whirlpool is because its pressure substantially near barometric pressure, when carrying out exhaust gas recirculation, needs the pressurization of process gas compressor just can carry out exhaust gas recirculation.Waste gas not only needs gas compressor that energy is provided by gas compressor, also can reduce the working life of gas compressor.
Summary of the invention
The air inlet sectioning that the purpose of this invention is to provide a kind of internal-combustion engine, it is in the work cycle of cylinder of internal-combustion engine, make the gas (as air or inflammable mixture and waste gas) of different compositions or the gas of different pressures (as the gas of not supercharging and the gas after the supercharging) or the composition gas (as gas supercharging after and waste gas) all different, successively pass through intake duct at times with pressure; Thereby make the cylinder intake that the air inlet sectioning is installed implement the air inlet segmentation, reduce engine exhaust or/and improve the transient response performance of boosting internal combustion engine.
The air inlet sectioning of a kind of internal-combustion engine provided by the invention, comprise at least one intake duct that outlet links to each other with intake valve of internal combustion engine, at least two suction tude, be provided with the air inlet aux. control valve between described intake duct and the described suction tude, the keying of air inlet aux. control valve regularly makes described intake duct intake process be divided at least two air inlet durations, and intake duct connected in turn with corresponding suction tude respectively in the air inlet duration of having divided.
Compared with prior art, the invention has the beneficial effects as follows: during its work,, make the complete intake process of at least one intake duct of internal-combustion engine be divided at least two air inlet durations by the machine opening and closing in due course of air inlet aux. control valve; The intake process of internal combustion engine inlet has determined the intake process of cylinder, and internal-combustion engine is installed the air inlet sectioning of one or more internal-combustion engines, can make the complete intake process of at least one cylinder of internal-combustion engine be divided at least two air inlet durations; At least make the intake process of a cylinder be divided at least two air inlet durations, can make at least one cylinder waste gas of internal-combustion engine and inflammable mixture (or air) layering better, reduce the blending of waste gas and inflammable mixture, guarantee that ignition timing has the inflammable mixture that is suitable for catching fire, just can improve the stability of burning, improve the tolerance of internal-combustion engine exhaust gas recirculation; And HCCI (homogeneous-charge compression-ignition) operating range is significantly widened.At least make the intake process of a cylinder be divided at least two air inlet durations, can make at least one cylinder of internal-combustion engine have the gas of different pressures to enter, thereby reduce the air inflow that gas compressor (or other air supply system) provides, gas compressor (or other air supply system) power demand, volume can be reduced, the boosting internal combustion engine transient response speed can be improved.Internal-combustion engine only needs a cylinder that the subsection-inlet device is installed, and can realize beneficial effect of the present invention; Certainly, the air inlet sectioning number that cylinder of internal-combustion engine is installed is many more, or the contained intake duct of air inlet sectioning that internal-combustion engine is installed is many more, and promptly the cylinder of internal-combustion engine subsection-inlet is many more, and beneficial effect of the present invention is remarkable more.
As a further improvement on the present invention, described suction tude is provided with two, is respectively first suction tude and second suction tude; The keying of air inlet aux. control valve is regularly corresponding with the phase place of repeatedly kicking into air valve valve timing, the opening and closing of air inlet aux. control valve make the intake process of intake duct successively be divided into first duration and second duration by opening, in first duration, the intake duct and first suction tude are connected, in second duration, the intake duct and second suction tude are connected.Above-mentioned intake duct number can equate with the contained suction valve number of internal-combustion engine.This technological scheme when increasing flow regulator, can according to engine load or and rotating speed, adjust the ratio of various inlet duration air inflow.
One of concrete improvement of technique scheme, described internal-combustion engine are naturally aspirated engine; The first suction tude import links to each other with smoke-ejecting pipe, and the second suction tude import links to each other with air-strainer or directly communicates with air.
The another concrete improvement of technique scheme, described internal-combustion engine are boosting internal combustion engine or charge inter cooling internal-combustion engine; The first suction tude import links to each other with air-strainer outlet or centrifugal-flow compressor refluxing opening, and the second suction tude import links to each other with the blower outlet or the intercooler outlet of pressurized machine.The further optimized project of the technical program is to increase flow regulator; Flow regulator is: the flow control valve that the import position of suction tude J1 is provided with, and the flow control valve that is provided with between two suction tude; When this flow regulator made boosting internal combustion engine that better low-speed performance be arranged, high speed performance also improved.
One specifically improving again of technique scheme, described internal-combustion engine is two groups of boosting internal combustion engines; The second suction tude import links to each other with the outlet of first group of intercooler, and the first suction tude import links to each other with second group of intercooler outlet.
As another improvement of the present invention, described internal-combustion engine is boosting internal combustion engine or charge inter cooling internal-combustion engine; The outlet of intake duct links to each other with intake valve of internal combustion engine; Suction tude has three, is respectively first suction tude, second suction tude and the 3rd suction tude; The keying of air inlet aux. control valve is regularly corresponding with the phase place of repeatedly kicking into air valve valve timing, and the opening and closing of air inlet aux. control valve make the intake process of intake duct successively be divided into first duration, second duration, the 3rd duration by opening; Intake duct was connected with first suction tude in its first duration; Intake duct was connected in its second duration and second suction tude; Intake duct was connected with the 3rd suction tude in its 3rd duration; The first suction tude import links to each other with smoke-ejecting pipe, and the second suction tude import links to each other with the air-strainer outlet, and the 3rd suction tude import links to each other with the outlet or the intercooler outlet of supercharger air compressor.
For realizing that the intake process of intake duct is divided at least two air inlet durations, described air inlet aux. control valve can be the electrically-controlled valve by ECU control; Can also be the mechanical valve of following structure: it comprises internal rotor, is sleeved on the external rotor on the internal rotor and is positioned at the outer valve body of external rotor, internal rotor hollow and end sealing, the other end is an opening end, and internal rotor, external rotor and side of valve body offer corresponding at least one group of valve port respectively; The closed end of internal rotor connects a driven external gear through rotating shaft, and the respective end of external rotor is provided with driven internal gear, and a driving gear that is installed in the transmission shaft end is meshed with driven external gear and driven internal gear respectively; Transmission shaft and internal-combustion engine timing gear are in transmission connection.During use, make each the cylinder intake duct of arbitrary termination in the opening end of valve port on the valve body or internal rotor, the other end taps into tracheae, when transmission shaft rotates, drive internal rotor and external rotor backward motion, overlapped or when overlapping, the valve port of air inlet aux. control valve promptly is in opening state when the valve port that moves to internal rotor, external rotor and valve body side, under other states, the valve port of air inlet aux. control valve is in closed condition; Because internal rotor and external rotor reverse rotation, the keying speed of valve is the stack of internal rotor and external rotor speed, makes the valve port of air inlet aux. control valve can realize that big aperture also can open and close rapidly; Transmission shaft and timing gear are in transmission connection, and can make valve port and the order unlatching corresponding with timing of a plurality of air inlet aux. control valves of each single cylinder.When concrete the application, following two kinds of schemes can be arranged: one, the corresponding intake duct of opening termination of described internal rotor, each valve port of valve body side connects corresponding suction tude respectively; The valve port number sum of air inlet assist control valve body side equates with the suction tude number.Its two, the number of described air inlet aux. control valve equates that with the suction tude number internal rotor opening end of each air inlet aux. control valve taps into tracheae respectively, the valve port number of each air inlet assist control valve body side equates with the intake duct number and connects corresponding intake duct respectively.
In the technique scheme, when suction tude is provided with flow control valve, can satisfy the needs of internal-combustion engine to flow control: as petrol engine, for satisfying the needs of air fuel ratio control, the flow control valve that petrol engine suction tude inlet end is provided with is generally closure.
As a kind of optimized project of the present invention, the angular advance device that between the timing mechanism of transmission shaft and internal-combustion engine, is provided with, i.e. flow regulator.The angular advance device is a prior art of the prior art; Because the best angle value of the open phase of multistage air inlet duration is that the rotating speed with internal-combustion engine, the variation of load change, the setting of angular advance device can dynamically be adjusted the open phase of each air inlet duration of each single cylinder.
Description of drawings
The air inlet sectioning structural representation of an a kind of intake duct of Fig. 1 the present invention.
The structural representation of a kind of air inlet aux. control valve of Fig. 2.
Fig. 3 is the M1-M1 sectional view of Fig. 2.
Fig. 4 is the M2-M2 sectional view of Fig. 2.
Fig. 5 edged surface value of a kind of single cylinder charging stage and air inlet aux. control valve valve port air inlet duration schematic representation.
The air inlet sectioning structural representation of 6 intake ducts of a kind of optimization of Fig. 6 the present invention.
The structural representation of another air inlet aux. control valve of Fig. 7.
Fig. 8 is the M1-M1 sectional view of Fig. 7.
Fig. 9 is the M5-M5 sectional view of Fig. 7.
Figure 10 is the M6-M6 sectional view of Fig. 7.
The air inlet sectioning schematic representation of six intake ducts of another optimization of Figure 11 the present invention.
Figure 12 has the centrifugal-flow compressor sectional view of return port.
The air inlet sectioning schematic representation of four intake ducts of a kind of optimization of Figure 13 the present invention.
Another kind of single cylinder charging stage edged surface value of Figure 14 and air inlet aux. control valve valve port air inlet duration schematic representation.
Figure 15 installs a kind of pair of supercharged diesel engine pressurization system structural representation of the present invention.
Embodiment
As Fig. 1, be a kind of air-intake of combustion engine sectioning of an intake duct, comprise 1 intake duct 1-J, 2 suction tude J1, J2; The outlet of intake duct 1-J links to each other with cylinder intake valve K1; Suction tude J1 import links to each other with smoke-ejecting pipe 20, suction tude J2 import link to each other with air-strainer 10 (cleaner as air, suction tude J2 also can directly communicate with air); Be respectively equipped with 1 air inlet aux. control valve F1 between intake duct 1-J and 2 suction tude J1, J2; The keying of the air inlet aux. control valve F1 of intake duct 1-J is corresponding with the phase place of the valve timing of cylinder intake valve K1, make the complete intake process of intake duct 1-J be divided into 2 air inlet durations, and corresponding intake duct 1-J was connected with corresponding suction tude in the air inlet duration of 2 segmentations.Air inlet aux. control valve F1 (seeing Fig. 2-4) comprises internal rotor 101, external rotor 102 and valve body 103, internal rotor 101 hollows and end sealing, the other end is an opening end, the side of internal rotor 101, external rotor 102 and valve body 103 offers corresponding 2 groups of valve ports respectively, correspond to 1-1,1-2 respectively, the internal rotor in the air inlet aux. control valve F1, the valve port phase angle of external rotor side are staggeredly located; The closed end of internal rotor 101 connects a driven external gear 104 through axle, the respective end of external rotor 102 is provided with driven internal gear 105, one is installed in transmission shaft 106-1, and (corresponding transmission shaft is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, and transmission shaft and timing gear are in transmission connection.Relative position by the valve port position changes, and can realize the open and close of air inlet aux. control valve valve port; The opening end of the internal rotor of air inlet Auxiliary valves is connected with intake duct 1-J, and the valve port 1-1 of valve F1 valve body side is connected with suction tude J1, and valve port 1-2 is connected with suction tude J2; The valve body 103 of air inlet aux. control valve F1 can be connected as a single entity with suction tude (also can be arranged in the suction tude or be arranged in the intake duct according to internal-combustion engine spatial condition air inlet aux. control valve), and the valve port in the air inlet aux. control valve is corresponding with the corresponding keying angle of the phase place of the valve timing of corresponding suction valve; Internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3: 1: 1; For realizing the fast opening and closing of air inlet aux. control valve, described internal rotor rotating speed: the rotating speed of external rotor: the internal combustion (IC) engine camshaft rotating speed can be 5: 1: 1,4: 1: 1,3: 1: 1,2: 1: 1, choose the internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3: 1: 1, for no other reason than that, under the condition that satisfies each air inlet aux. control valve valve port angle, wish internal rotor, the external rotor rotating speed is in The faster the better, the rotating speed of external rotor is big more, all single valve ports (as valve port 1-1) keying speed is fast more, but valve port 1-1 is more little from being opened to the adjustable range (angle) of closing; After internal rotor 101, external rotor 102 rotating speeds were determined, valve port angle [alpha] 1, external rotor 102 valve port angle betas 1 on the internal rotor 101 had determined that air inlet aux. control valve valve port 1-1 is from being opened to the angular range of closing; The length L 1 of valve port 1-1 also has influence on valve port 1-1 and opens the cross section simultaneously, and then influences the setting (also can accelerate internal rotor, external rotor rotating speed by two valve port air inlet durations of control) of keying speed.Like this, 2 valve ports of air inlet aux. control valve successively are divided into the complete intake process of intake duct 1-J 2 air inlet durations that link to each other successively by opening, i.e. first duration, second duration, intake duct is connected with 2 suction tude J1, J2 respectively 2 air inlet durations of having divided.
During work, air inlet aux. control valve F1 is divided into 2 air inlet durations to the complete intake process of intake duct 1-J: the relative position by the valve port position changes, can realize the open and close of air inlet aux. control valve valve port, making suction pressure is that waste gas, the suction pressure of the suction tude J1 of atmospheric pressure is the air of the suction tude J2 of atmospheric pressure substantially substantially, successively enters cylinder by intake duct 1-J.Fig. 5 is the charging stage edged surface value and the air inlet aux. control valve valve port air inlet duration schematic representation of single-cylinder engine.Wherein:
The differential seat angle that the air inlet duration of θ 1 expression IO Intake Valve Opens and air inlet aux. control valve valve port 1-1 opens; The differential seat angle that the air inlet duration of θ 2 expression IO Intake Valve Opens and air inlet aux. control valve valve port 2-1 opens; The first air inlet duration of θ 4 expression air inlet aux. control valve valve port 1-1 makes waste gas enter cylinder by suction tude J1 by intake duct from being opened to the angle of closing; The second air inlet duration of θ 5 expression air inlet aux. control valve valve port 2-1 makes air enter cylinder by suction tude J2 by intake duct from being opened to the angle of closing.According to the use of boosting internal combustion engine, can select the angle of θ 1, θ 2, θ 4, θ 5 by test.
By complete intake process of intake duct 1-J is divided into 2 air inlet durations, can make waste gas, the suction pressure of second duration of first duration is the air of atmospheric pressure substantially, successively enter cylinder by intake duct, make the waste gas and the air layering preferably of cylinder, improve the tolerance of internal-combustion engine to exhaust gas recirculation, improve the stability of burning, reduce engine exhaust.
For the internal-combustion engine of needs control air fuel ratio, as petrol engine, then can flow control valve be installed at every suction tude entrance point, this flow control valve can be closure.
The present embodiment scheme both can be used for single-cylinder engine, also can be used for multi-cylinder engine simultaneously.When the present embodiment scheme is used for multi-cylinder engine, partial cylinders adopts a plurality of air inlet sectionings (number of air inlet sectioning equates with the cylinder number that adopts the air inlet sectioning), original air inlet system that the residue cylinder adopts intake duct and the suction tude that contains required make-up gas directly to link to each other; More excellent scheme is that each cylinder of multi-cylinder engine all adopts the air inlet sectioning.
As Fig. 6, the air inlet sectioning for a kind of 6 intake ducts of optimization comprises 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J, 2 suction tude J1, J2; Internal-combustion engine contains 6 suction valves; 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J directly with suction valve import K1, K2, K3, K4, K5, the K6 of each single cylinder, link to each other; Suction tude J1 links to each other with air-strainer 10, and suction tude J2 links to each other with the outlet 41 of intercooler 40; Be respectively equipped with 2 air inlet aux. control valve F1, F2 between 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J and 2 suction tude J1, J2; The keying of the air inlet aux. control valve of 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J is corresponding with the phase place of the valve timing of 6 air valves that intake duct is repeatedly kicked into, make 6 intake duct 1-J, 2-J, 3-J, 4-J, intake process that 5-J, 6-J are complete all be divided into 2 air inlet durations, and corresponding intake duct was connected with corresponding suction tude in the air inlet duration of 2 segmentations.Every air inlet aux. control valve comprises internal rotor 101, is sleeved on the external rotor 102 on the internal rotor and is positioned at the outer valve body 103 of external rotor, internal rotor 101 hollows and end sealing, the other end is an opening end, opening end links to each other with corresponding suction tude inlet end, with an air inlet aux. control valve F1 (seeing Fig. 7-10) is example, and air inlet aux. control valve F2 is identical with air inlet aux. control valve F1 structure; Air inlet aux. control valve F1 comprises internal rotor 101, external rotor 102 and valve body 103, the side of internal rotor 101, external rotor 102 and valve body 103 offers corresponding 6 groups of valve ports respectively, correspond to 1-1 to 6-1 (valve port of air inlet aux. control valve F2 correspondence is 1-2 to 6-2) respectively, the internal rotor in the air inlet aux. control valve F1, the valve port phase angle of external rotor side are staggeredly located; The closed end of internal rotor 101 connects a driven external gear 104 through axle, the respective end of external rotor 102 is provided with driven internal gear 105, one is installed in transmission shaft 106, and (corresponding transmission shaft is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, and transmission shaft and timing gear are in transmission connection.Relative position by the valve port position changes, and can realize the open and close of air inlet aux. control valve valve port; The opening end of the internal rotor of 2 valves connects corresponding suction tude respectively, and each valve port of valve body side connects the intake duct of corresponding each cylinder respectively; 6 groups of valve ports in every air inlet aux. control valve are corresponding with the corresponding keying angle of the phase place of the valve timing of corresponding suction valve; Internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3: 1: 1; The open phase of the adjacent two air inlet durations that the order of each single cylinder is opened overlaps; Be provided with angular advance device T1 between the transmission shaft of F1 and the timing mechanism of diesel engine, be provided with angular advance device T2 between the transmission shaft of F2 and the timing mechanism of diesel engine.Like this, 2 valve ports of each single cylinder successively are divided into the complete intake process of respective cylinder the air inlet duration of 2 weak points that link to each other, that adjacent two procedure divisions are overlapping successively by opening, i.e. first duration, second duration, intake duct is connected with 2 suction tude J1, J2 respectively 2 air inlet durations of having divided, and makes the endurance of each intake duct same order duration all the same.
During work, the air inlet aux. control valve of every cylinder is divided into 2 to the complete intake process of each intake duct the air inlet duration overlapping, that link to each other successively; Relative position by the valve port position changes, can realize the open and close of air inlet aux. control valve valve port, making suction pressure is that air (air in the single stage supercharging after the cold or air behind the multistage charge inter cooling) behind air and the charge inter cooling of atmospheric pressure is respectively 2 different air inlet durations, earlier, the back enters cylinder by intake duct; By between transmission shaft and the timing gear transmission angular advance device being set partly or entirely, can dynamically adjust suction pressure is the ratio of the air and the air behind the charge inter cooling of atmospheric pressure, the discharging of different rotating speeds, different load fortune is all improved, specifically see following explanation.Fig. 4 is the single cylinder exhaust phase edged surface value and the air inlet aux. control valve valve port air inlet duration schematic representation of four-stroke boost internal-combustion engine, and the effect of explanation angular advance device, and this explanation is equally applicable to other boosting internal combustion engine.Wherein:
The differential seat angle that the air inlet duration of θ 1 expression IO Intake Valve Opens and air inlet aux. control valve valve port 1-1 opens, adjustment for θ 1, can adjust the suction pressure that enters cylinder is the ratio of the air of atmospheric pressure substantially, when θ 1 is negative value, the amount that enters suction pressure in the cylinder and be substantially the air of atmospheric pressure reduces rapidly, when θ 1 adds θ 4 and equals zero, entering suction pressure in the cylinder by intake duct is that the amount of the air of atmospheric pressure is zero substantially, θ 1 adjusts by angular advance device T1 in the present embodiment, desirable big value gets the small value during high speed during boosting internal combustion engine low speed.
The differential seat angle that θ 2 expression IO Intake Valve Opens and the air inlet duration of air inlet aux. control valve valve port 1-2 open, for the adjustment of θ 2, the cold ratio of the air of pressure afterwards in can adjusting the suction pressure that enters cylinder and being.θ 2 adjusts by angular advance device T2 in the present embodiment.
The first air inlet duration of θ 4 expression air inlet aux. control valve valve port 1-1 is from being opened to the angle of closing, and making suction pressure is that the air of atmospheric pressure enters cylinder by suction tude J1 by intake duct substantially.
The second air inlet duration of θ 5 expression air inlet aux. control valve valve port 1-2 is from being opened to the angle of closing, and makes the air behind the charge inter cooling enter cylinder by suction tude J2 by intake duct.
According to the use of boosting internal combustion engine, can select the angle of θ 1, θ 2, θ 4, θ 5 by test.As at transmission shaft and timing mechanism the angular advance device being set, the angular advance device is an existing products in the prior art, by changing output and the relative position of importing, output phase is changed; The angular advance device can make the angle of θ 1, θ 2 change with the rotation speed change of boosting internal combustion engine or with rotating speed, load.According to optimizing effect, also can also can an angular advance device be set only to setting angle advancing device before the partial-air admission aux. control valve at all transmission shaft front ends.
By one of each intake duct complete intake process is divided into 2 air inlet durations, the suction pressure that can make for first duration is the air after cold during air, the suction pressure of second duration of atmospheric pressure is, successively enter cylinder by intake duct, can reduce the air that gas compressor provides each cylinder, no matter pressurized machine is turbosupercharger or mechanical supercharger, all can reduce gas compressor power demand, volume, thereby improve the boosting internal combustion engine transient response speed; For the engine driven supercharging internal-combustion engine, when reducing mechanical supercharger gas compressor power demand, can reduce the loss of boosting internal combustion engine useful horsepower, can improve the efficient of engine driven supercharging; By the angular advance device, can carry out according to working conditions such as internal-combustion engine rotational speed, loads, can adjust the different length of at least two air inlet durations constantly of intake duct, high-precision adjustment intake duct is by the flow of different source of the gas gases, when can make boosting internal combustion engine that better low-speed performance is arranged, high speed performance also improves.
The present embodiment scheme is a kind of air inlet sectioning of optimization of the boosting internal combustion engine of 6 intake ducts, but this air inlet sectioning can be used for the boosting internal combustion engine (being that partial cylinders adopts the air inlet sectioning, original air inlet system that partial cylinders adopts intake duct and suction tude directly to link to each other) more than 6 air flues simultaneously.
As Figure 11, the air inlet sectioning for 6 intake ducts of another optimization comprises 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J, 2 suction tude J1, J2, intercooler 40, centrifugal-flow compressor 30; Internal-combustion engine contains 6 suction valves; 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J directly with suction valve import K1, K2, K3, K4, K5, the K6 of each single cylinder, link to each other; Suction tude J1 links to each other with the return port 31 (sectional view is seen Figure 12) of centrifugal-flow compressor 30, and suction tude J2 links to each other with the outlet 41 of intercooler 40; Be respectively equipped with 2 air inlet aux. control valve F1, F2 between 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J and 2 suction tude J1, J2; Suction tude J1 is provided with flow control valve F10 with the position that the return port of centrifugal-flow compressor 30 links to each other, and flow control valve F20 is set between suction tude J1, the suction tude J2; The keying of the air inlet aux. control valve of 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J is corresponding with the phase place of the valve timing of the corresponding suction valve of internal-combustion engine to make 6 intake duct 1-J, 2-J, 3-J, 4-J, intake process that 5-J, 6-J are complete all be divided into 2 air inlet durations, and corresponding intake duct was connected with corresponding suction tude in the air inlet duration of 2 segmentations.Every air inlet aux. control valve comprises internal rotor 101, is sleeved on the external rotor 102 on the internal rotor and is positioned at the outer valve body 103 of external rotor, internal rotor 101 hollows and end sealing, the other end is an opening end, opening end links to each other with corresponding suction tude inlet end, with an air inlet aux. control valve F1 is example, and air inlet aux. control valve F2 is identical with air inlet aux. control valve F1 structure; Air inlet aux. control valve F1 comprises internal rotor 101, external rotor 102 and valve body 103, the side of internal rotor 101, external rotor 102 and valve body 103 offers corresponding 6 groups of valve ports respectively, correspond to 1-1 to 6-1 (valve port of air inlet aux. control valve F2 correspondence is 1-2 to 6-2) respectively, the internal rotor in the air inlet aux. control valve F1, the valve port phase angle of external rotor side are staggeredly located; The closed end of internal rotor 101 connects a driven external gear 104 through axle, the respective end of external rotor 102 is provided with driven internal gear 105, one is installed in transmission shaft 106, and (corresponding transmission shaft is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, and transmission shaft and timing gear are in transmission connection.Relative position by the valve port position changes, and can realize the open and close of air inlet aux. control valve valve port; The opening end of the internal rotor of 2 valves connects corresponding suction tude respectively, and each valve port of valve body side connects the intake duct of corresponding each cylinder respectively; 6 groups of valve ports in every air inlet aux. control valve are corresponding with the corresponding keying angle of the phase place of the valve timing of corresponding suction valve; Internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3: 1: 1; The open phase of the adjacent two air inlet durations that the order of each single cylinder is opened overlaps.Like this, 2 valve ports of each single cylinder are divided into successively air inlet durations that link to each other, overlapping, 2 weak points of adjacent two procedure divisions i.e. first duration, second duration to the complete intake process of respective cylinder, intake duct is connected with 2 suction tude J1, J2 respectively 2 air inlet durations of having divided, and makes the endurance of each intake duct same order duration all the same.
During work, the air inlet aux. control valve of every cylinder is divided into 2 to the complete intake process of each intake duct the air inlet duration overlapping, that link to each other successively; Relative position by the valve port position changes, can realize the open and close of air inlet aux. control valve valve port, making suction pressure is that air behind air and the charge inter cooling of atmospheric pressure is respectively 2 different air inlet durations substantially, earlier, the back enters cylinder by intake duct, can reduce the air that gas compressor provides each cylinder, can reduce gas compressor power demand, volume, thereby improve the boosting internal combustion engine transient response speed; Because the air of first duration is the air that derives from the return port of centrifugal-flow compressor, flow perturbation when having improved small flow can reduce centrifugal-flow compressor minimum surge flow.Internal-combustion engine is flow control valve F10 standard-sized sheet when low speed, flow control valve F20 full cut-off; Internal-combustion engine is flow control valve F10 full cut-off when middling speed (or at a high speed), flow control valve F20 standard-sized sheet; Internal-combustion engine at low speed when middling speed (or at a high speed) during transition, but flow control valve F10 standard-sized sheet, flow control valve F20 full cut-off; When can make boosting internal combustion engine that better low-speed performance is arranged, high speed performance also improves.
The present embodiment scheme is a kind of air inlet sectioning of optimization of the boosting internal combustion engine of 6 intake ducts, but this air inlet sectioning can be used for the boosting internal combustion engine (being that partial cylinders adopts the air inlet sectioning, original air inlet system that partial cylinders adopts intake duct and suction tude directly to link to each other) more than 6 air flues simultaneously.
As Figure 13, the air inlet sectioning of four intake ducts of a kind of optimization of the present invention comprises 4 intake ducts, 3 suction tude J1, J2, J3, air-strainer 10, smoke-ejecting pipe 20, intercooler 40; 4 intake duct 1-J, 2-J, 3-J, 4-J directly link to each other with each single cylinder suction valve import; Be respectively equipped with air inlet aux. control valve F1, F2, F3 between each intake duct and 3 suction tude J1, J2, the J3; Suction tude J1 links to each other with smoke-ejecting pipe 20, and suction tude J2 links to each other with air-strainer 10, and suction tude J3 links to each other with the outlet 41 of intercooler 40; The keying of the air inlet aux. control valve of each air flue is corresponding with the phase place of the valve timing of corresponding suction valve, make the complete intake process of each single cylinder be divided into 3 air inlet durations, and corresponding intake duct was connected with corresponding suction tude in the air inlet duration of 3 segmentations.The keying of the air inlet aux. control valve of 4 intake duct 1-J, 2-J, 3-J, 4-J is corresponding with the phase place of the valve timing of the corresponding suction valve of internal-combustion engine to make 4 intake duct 1-J, 2-J, intake process that 3-J, 4-J are complete all be divided into 3 air inlet durations, and corresponding intake duct was connected with corresponding suction tude in the air inlet duration of 3 segmentations.Every air inlet aux. control valve comprises internal rotor 101, is sleeved on the external rotor 102 on the internal rotor and is positioned at the outer valve body 103 of external rotor, internal rotor 101 hollows and end sealing, the other end is an opening end, opening end links to each other with corresponding suction tude inlet end, with an air inlet aux. control valve F1 is example, and air inlet aux. control valve F2 is identical with air inlet aux. control valve F1 structure; Air inlet aux. control valve F1 comprises internal rotor 101, external rotor 102 and valve body 103, the side of internal rotor 101, external rotor 102 and valve body 103 offers corresponding 4 groups of valve ports respectively, correspond to 1-1 to 4-1 (valve port of air inlet aux. control valve F2 correspondence is that the valve port of 1-2 to 4-2, air inlet aux. control valve F3 correspondence is 1-3 to 4-3) respectively, the internal rotor in the air inlet aux. control valve F1, the valve port phase angle of external rotor side are staggeredly located; The closed end of internal rotor 101 connects a driven external gear 104 through axle, the respective end of external rotor 102 is provided with driven internal gear 105, one is installed in transmission shaft 106, and (corresponding transmission shaft is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, and transmission shaft and timing gear are in transmission connection.Relative position by the valve port position changes, and can realize the open and close of air inlet aux. control valve valve port; The opening end of the internal rotor of 3 valves connects corresponding suction tude respectively, and each valve port of valve body side connects the intake duct of corresponding each cylinder respectively; 4 groups of valve ports in every air inlet aux. control valve are corresponding with the corresponding keying angle of the phase place of the valve timing of corresponding suction valve; Internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3: 1: 1; The open phase of the adjacent two air inlet durations that the order of each single cylinder is opened overlaps; Be provided with angular advance device T1 between the transmission shaft of F1 and the timing mechanism of diesel engine, be provided with angular advance device T2 between the transmission shaft of F2 and the timing mechanism of diesel engine, be provided with angular advance device T3 between the transmission shaft of F3 and the timing mechanism of diesel engine.Like this, 3 valve ports of each single cylinder the complete intake process of respective cylinder be divided into successively link to each other, adjacent two procedure divisions are overlapping, 3 air inlet durations i.e. first duration, second duration, the 3rd duration, intake duct is connected with 3 suction tude J1, J2, J3 respectively 3 air inlet durations of having divided, and makes the endurance of each intake duct same order duration all the same.
During work, the air inlet aux. control valve is divided into 3 to each intake duct the air inlet duration overlapping, that link to each other successively; Relative position by the valve port position changes, can realize the open and close of air inlet aux. control valve valve port, make the suction tude of different sources of the gas: suction pressure is that the waste gas of the suction tude J1 of atmospheric pressure, air, the suction pressure that suction pressure is the suction tude J2 of atmospheric pressure substantially are the air of the suction tude J3 of the pressure after the supercharging substantially, enters cylinder by intake duct respectively; By between transmission shaft and the timing gear transmission angular advance device being set partly or entirely, can improve low operating mode, high operating mode ride quality simultaneously, specifically see following explanation.Figure 14 is the single cylinder charging stage edged surface value and the air inlet aux. control valve valve port air inlet duration schematic representation of four-stroke boost internal-combustion engine, and the effect of angular advance device is described, this explanation is equally applicable to other internal-combustion engine.Wherein:
The differential seat angle that the air inlet duration of θ 1 expression IO Intake Valve Opens and air inlet aux. control valve valve port 1-1 opens, adjustment for θ 1, can adjust the ratio of the exhausted air quantity that enters cylinder, when θ 1 is negative value, the exhausted air quantity that enters in the cylinder reduces rapidly, when θ 1 added θ 4 and equals zero, the exhausted air quantity that is entered in the cylinder by intake duct was zero, and θ 1 adjusts by angular advance device T1 in the present embodiment.
The differential seat angle that the air inlet duration of θ 2 expression IO Intake Valve Opens and air inlet aux. control valve valve port 1-2 opens, adjustment for θ 2, can adjust the suction pressure that enters cylinder is the ratio of the air of atmospheric pressure substantially, when θ 2 is negative value, the amount that enters suction pressure in the cylinder and be substantially the air of atmospheric pressure reduces rapidly, when θ 2 adds θ 5 and equals zero, entering suction pressure in the cylinder by intake duct is that the amount of the air of atmospheric pressure is zero substantially, and θ 2 adjusts by angular advance device T2 in the present embodiment.
The differential seat angle that θ 3 expression IO Intake Valve Opens and the air inlet duration of air inlet aux. control valve valve port 1-3 open, for the adjustment of θ 3, the cold ratio of the air of pressure afterwards in can adjusting the suction pressure that enters cylinder and being.
The first air inlet duration of θ 4 expression air inlet aux. control valve valve port 1-1 makes waste gas pass through intake duct by suction tude J1 from being opened to the angle of closing.
The second air inlet duration of θ 5 expression air inlet aux. control valve valve port 1-2 makes air pass through intake duct by suction tude J2 from being opened to the angle of closing.
The 3rd air inlet duration of θ 6 expression air inlet aux. control valve valve port 1-3 is from being opened to the angle of closing, and the air in making after cold passes through intake duct by suction tude J3.
According to the use of boosting internal combustion engine, can be optimized selection to the angle of θ 1, θ 2, θ 3, θ 4, θ 5, θ 6.As at transmission shaft and timing mechanism the angular advance device being set, the angular advance device is an existing products in the prior art, by changing output and the relative position of importing, output phase is changed; The angular advance device can make the angle of θ 1, θ 2, θ 3 change with the rotation speed change of boosting internal combustion engine or with rotating speed, load.According to optimizing effect, also can also can an angular advance device be set only to setting angle advancing device before the partial-air admission aux. control valve at all transmission shaft front ends.
By complete intake process of intake duct is divided into 3 air inlet durations, can make the waste gas of first duration, air, the suction pressure of the 3rd duration that the suction pressure of second duration is atmospheric pressure substantially be in the air of cold back pressure, successively enter cylinder by intake duct, make the waste gas and the air layering preferably of cylinder, the raising internal-combustion engine is to the tolerance of exhaust gas recirculation or realize the layering homogeneous preferably, improve the stability of burning, reduce engine exhaust; By the angular advance device, by the angular advance device, can dynamically adjust the single cylinder length of at least two air inlet durations according to working conditions such as internal-combustion engine rotational speed, loads, high-precision adjustment enters the ratio of different sources of the gas, further optimizes the combustion process of this single cylinder; The suction pressure of second duration is the air of cold back pressure during air, the suction pressure of the 3rd duration of atmospheric pressure is substantially, successively enter cylinder by intake duct, thereby make the gas of different pressures enter cylinder, can reduce the supercharger air compressor power demand, improve the transient response speed of boosting internal combustion engine; For the engine driven supercharging internal-combustion engine, when reducing mechanical supercharger gas compressor power demand, can reduce the loss of boosting internal combustion engine useful horsepower, can improve the efficient of engine driven supercharging; By the angular advance device, can be according to working conditions such as internal-combustion engine rotational speed, loads, dynamically adjust the length of at least two air inlet durations of single cylinder, better satisfy low operating mode (low speed full load), high operating mode (high speed full load) to service condition, boost pressure in the time of can improving the low operating mode of Vehicle Turbocharged internal-combustion engine.
The present embodiment scheme is a kind of air inlet sectioning of optimization of the boosting internal combustion engine of 4 intake ducts, but this air inlet sectioning can be used for the boosting internal combustion engine (being that partial cylinders adopts the air inlet sectioning, original air inlet system that partial cylinders adopts intake duct and suction tude directly to link to each other) more than 4 air flues simultaneously.
As Figure 15, be a kind of pair of supercharged diesel engine pressurization system structural representation, this internal-combustion engine is the consecutive pressurization system that six cylinders (respective cylinder number for I-VI) four-cycle diesel is optimized, wherein the air inlet sectioning is 1.This pair boosting internal combustion engine comprises 2 groups of pressurization systems, the air inlet sectioning of 1 optimization and 1 extraction flow control system; First group of pressurization system comprises intercooler 40-1, supercharger air compressor 30-1 and turbo machine 50-1; Second group of pressurization system comprises intercooler 40-2, supercharger air compressor 30-2 and turbo machine 50-2; The air inlet sectioning comprises individual intake duct 1-J, 2-J, 3-J, 4-J, 5-J, the 6-J that links to each other with the suction valve import of each single cylinder, 2 suction tude J1, J2 are respectively equipped with 2 air inlet aux. control valve F1, F2 between 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J and 2 suction tude J1, J2; The keying of the air inlet aux. control valve of 6 intake duct 1-J, 2-J, 3-J, 4-J, 5-J, 6-J is corresponding with the phase place of the valve timing of the corresponding suction valve of internal-combustion engine to make 6 intake duct 1-J, 2-J, 3-J, 4-J, intake process that 5-J, 6-J are complete all be divided into 2 air inlet durations, and corresponding intake duct was connected with corresponding suction tude in the air inlet duration of 2 segmentations; The import of gas compressor 30-1 links to each other with the outlet of air-strainer 10-1, the outlet of gas compressor 30-1 links to each other with the import of intercooler 40-1, the import of gas compressor 30-2 links to each other with the outlet of air-strainer 10-2, and the outlet of gas compressor 30-2 links to each other with the import of intercooler 40-2; Suction tude J2 links to each other with the outlet of the intercooler 40-1 of first group of pressurization system, and suction tude J1 links to each other with the intercooler 40-2 outlet of second group of pressurization system; The extraction flow control system comprises 6 air outlet flue 1-P, 2-P, 3-P, 4-P, 5-P, the 6-P that links to each other with each single cylinder outlet valve outlet, two outlet pipe P1, P2; Outlet pipe P1 one end directly links to each other with 6 air outlet flues, and the other end directly links to each other with turbo machine 50-1 import; Outlet pipe P2 one end links to each other with outlet pipe P1 by flow control valve F30, and the other end directly directly links to each other with turbo machine 50-2 import; The outlet of turbo machine 50-1 links to each other with smoke-ejecting pipe 20-1, and the outlet of turbo machine 50-2 links to each other with smoke-ejecting pipe 20-2.Every air inlet aux. control valve comprises internal rotor 101, is sleeved on the external rotor 102 on the internal rotor and is positioned at the outer valve body 103 of external rotor, internal rotor 101 hollows and end sealing, the other end is an opening end, opening end links to each other with corresponding suction tude inlet end, with an air inlet aux. control valve F1 is example, and air inlet aux. control valve F2 is identical with air inlet aux. control valve F1 structure; Air inlet aux. control valve F1 comprises internal rotor 101, external rotor 102 and valve body 103, the side of internal rotor 101, external rotor 102 and valve body 103 offers corresponding 6 groups of valve ports respectively, correspond to 1-1 to 6-1 (valve port of air inlet aux. control valve F2 correspondence is 1-2 to 6-2) respectively, the internal rotor in the air inlet aux. control valve F1, the valve port phase angle of external rotor side are staggeredly located; The closed end of internal rotor 101 connects a driven external gear 104 through axle, the respective end of external rotor 102 is provided with driven internal gear 105, one is installed in transmission shaft 106, and (corresponding transmission shaft is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, and transmission shaft and timing gear are in transmission connection.Relative position by the valve port position changes, and can realize the open and close of air inlet aux. control valve valve port; The opening end of the internal rotor of 2 valves connects corresponding suction tude respectively, and each valve port of valve body side connects the intake duct of corresponding each cylinder respectively; 6 groups of valve ports in every air inlet aux. control valve are corresponding with the corresponding keying angle of the phase place of the valve timing of corresponding suction valve; Internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3: 1: 1; The open phase of the adjacent two air inlet durations that the order of each single cylinder is opened overlaps.Like this, 2 valve ports of each single cylinder are divided into successively air inlet durations that link to each other, overlapping, 2 weak points of adjacent two procedure divisions i.e. first duration, second duration to the complete intake process of respective cylinder, intake duct is connected with 2 suction tude J2, J1 respectively 2 air inlet durations of having divided, and makes the endurance of each intake duct same order duration all the same.
During work, the air inlet aux. control valve of every cylinder is divided into 2 to the complete intake process of each intake duct the air inlet duration overlapping, that link to each other successively; Relative position by the valve port position changes, can realize the open and close of air inlet aux. control valve valve port, making suction pressure is that the air of suction tude J1 pressure, the pressure of suction press J2 successively enter respective cylinder by each intake duct, and two pressurization systems of original sequential pressurizing are just worked when internal-combustion engine low speed simultaneously.Internal-combustion engine is when low speed, and the extraction flow control system at first satisfies the needs of turbo machine 50-1, and promptly the energy that provides by turbo machine 50-1 makes gas compressor 30-1 guarantee that suction tude J2 pressure reaches usage requirement, at this moment, and the aperture minimum of flow control valve F30; In boosting internal combustion engine rotating speed uphill process, under the situation that basic assurance suction tude J2 pressure remains unchanged, the aperture of flow control valve F30 strengthens gradually, the pressure of suction tude J1 raises with rotating speed, and the pressure of suction tude J2 can remain unchanged substantially, internal-combustion engine is when calibration point, flow control valve F30 standard-sized sheet, the pressure of suction tude J1 can be the same with the pressure of suction tude J2, so just eliminated original consecutive pressurization system a plurality of pressurization systems in the rotating speed uphill process and switched the situation of the suction pressure fluctuation that occurs, fundamentally having solved turbocharging internal-combustion engines is the combination trip flow matches problem of impeller rotary machine and reciprocating motion type machinery.Increase flow control valve by being provided with between transmission shaft and the timing gear transmission between angular advance device or two suction tude, can strengthen the regulation range of sequential pressurizing internal-combustion engine.
Should can not wait with two groups of turbosupercharger in the example,, will increase the regulation range of sequential pressurizing internal-combustion engine when second group during greater than first group.Certainly, the present embodiment principle can be extended to the situation more than two groups of pressurized machines, and the working speed regulation range of sequential pressurizing internal-combustion engine will further strengthen.
Claims (10)
1. the air inlet sectioning of an internal-combustion engine, comprise at least one intake duct that outlet links to each other with intake valve of internal combustion engine, at least two suction tude, it is characterized in that: be provided with the air inlet aux. control valve between described intake duct and the described suction tude, the keying of air inlet aux. control valve regularly makes the intake process of described intake duct be divided at least two air inlet durations, and intake duct connected in turn with corresponding suction tude respectively in the air inlet duration of having divided.
2. the air inlet sectioning of a kind of internal-combustion engine according to claim 1, it is characterized in that: described suction tude is provided with two, is respectively first suction tude and second suction tude; The keying of air inlet aux. control valve is regularly corresponding with the phase place of repeatedly kicking into air valve valve timing, the opening and closing of air inlet aux. control valve make the intake process of intake duct successively be divided into first duration and second duration by opening, in first duration, the intake duct and first suction tude are connected, in second duration, the intake duct and second suction tude are connected.
3. the air inlet sectioning of a kind of internal-combustion engine according to claim 2, it is characterized in that: the number of described intake duct equates with the intake valve of internal combustion engine number.
4. the air inlet sectioning of a kind of internal-combustion engine according to claim 3, it is characterized in that: described internal-combustion engine is a naturally aspirated engine; The first suction tude import links to each other with smoke-ejecting pipe, and the second suction tude import links to each other with air-strainer or directly communicates with air.
5. the air inlet sectioning of a kind of internal-combustion engine according to claim 3, it is characterized in that: described internal-combustion engine is boosting internal combustion engine or charge inter cooling internal-combustion engine; The first suction tude import links to each other with air-strainer outlet or centrifugal-flow compressor refluxing opening, and the second suction tude import links to each other with the blower outlet or the intercooler outlet of pressurized machine.
6. require the air inlet sectioning of described a kind of internal-combustion engine according to right 3, it is characterized in that: described internal-combustion engine is two groups of boosting internal combustion engines; The second suction tude import links to each other with the outlet of first group of intercooler, and the first suction tude import links to each other with second group of intercooler outlet.
7. the air inlet sectioning of a kind of internal-combustion engine according to claim 1, it is characterized in that: described internal-combustion engine is boosting internal combustion engine or charge inter cooling internal-combustion engine; The outlet of intake duct links to each other with intake valve of internal combustion engine; Suction tude has three, is respectively first suction tude, second suction tude and the 3rd suction tude; The keying of air inlet aux. control valve is regularly corresponding with the phase place of repeatedly kicking into air valve valve timing, and the opening and closing of air inlet aux. control valve make the intake process of intake duct successively be divided into first duration, second duration, the 3rd duration by opening; Intake duct was connected with first suction tude in its first duration; Intake duct was connected in its second duration and second suction tude; Intake duct was connected with the 3rd suction tude in its 3rd duration; The first suction tude import links to each other with smoke-ejecting pipe, and the second suction tude import links to each other with the air-strainer outlet, and the 3rd suction tude import links to each other with the outlet or the intercooler outlet of supercharger air compressor.
8. according to the air inlet sectioning of any described a kind of internal-combustion engine of claim 1-7, it is characterized in that: described air inlet aux. control valve comprises internal rotor, is sleeved on the external rotor on the internal rotor and is positioned at the outer valve body of external rotor, internal rotor hollow and end sealing, the other end is an opening end, and internal rotor, external rotor and side of valve body offer corresponding at least one group of valve port respectively; The closed end of internal rotor connects a driven external gear through rotating shaft, and the respective end of external rotor is provided with driven internal gear, and a driving gear that is installed in the transmission shaft end is meshed with driven external gear and driven internal gear respectively; Described transmission shaft and internal-combustion engine timing gear are in transmission connection.
9. the air inlet sectioning of a kind of internal-combustion engine according to claim 8 is characterized in that: the corresponding intake duct of opening termination of described internal rotor, and each valve port of valve body side connects corresponding suction tude respectively; The valve port number sum of air inlet assist control valve body side equates with the suction tude number.
10. the air inlet sectioning of a kind of internal-combustion engine according to claim 8, it is characterized in that: the number of described air inlet aux. control valve is at least two, the internal rotor opening end of each air inlet aux. control valve taps into tracheae respectively, and the valve port number of each air inlet assist control valve body side equates with the intake duct number and connects corresponding intake duct respectively; Be provided with the angular advance device between the timing mechanism of transmission shaft and internal-combustion engine.
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