CN101413423A - Module type multifunctional pulse conversion turbocharging system - Google Patents
Module type multifunctional pulse conversion turbocharging system Download PDFInfo
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- CN101413423A CN101413423A CNA2008102030294A CN200810203029A CN101413423A CN 101413423 A CN101413423 A CN 101413423A CN A2008102030294 A CNA2008102030294 A CN A2008102030294A CN 200810203029 A CN200810203029 A CN 200810203029A CN 101413423 A CN101413423 A CN 101413423A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention relates to a module type multifunctional pulse conversion turbocharging system and belongs to the technical field of internal combustion engine. The module type multifunctional pulse conversion turbocharging system comprises a cylinder, an exhaust branch pipe, an exhaust pipe section, a turbine and a guide plate. The guide plate is inserted into the exhaust pipe section from a connecting part between the exhaust branch pipe and the exhaust pipe section, and gradually extends along the flowing direction of exhaust air till the guide plate is parallel to the axial line of the exhaust pipe section; the exhaust pipe section is divided into an upstream section of the exhaust pipe section, a lower downstream section of the exhaust pipe section and an extending section of the exhaust branch pipe; and the sectional area of the upstream section of the exhaust pipe section is gradually reduced. High-speed air current can be formed in an outlet of the upstream section of the exhaust pipe section; and a low-pressure region is formed in an outlet of the extending section of the exhaust branch pipe in order that scavenging is favored instead of being interfered. The air current of the outlet of the extending section of the exhaust branch pipe is basically parallel to the axial line of the exhaust pipe section, thereby producing no interference of air current. The module type multifunctional pulse conversion turbocharging system has the advantages that the module type multifunctional pulse conversion turbocharging system has simple structure, less occupation and convenient disassembly and assembly, reduces maintenance time and expense and is suitable for large-power four-stroke diesel engines with 4 to 20 cylinders and diversified supercharging degrees..
Description
Technical field
The present invention relates to a kind of internal combustion engine turbocharging system, particularly a kind of module type multifunctional pulse conversion turbocharging system belongs to technical field of internal combustion engines.
Background technique
Turbo charge system is the critical system of supercharged diesel engine, and its power character, Economy and emission performance are all had material impact; The gas flow of exhaust piping has a significant impact the performance of four-stroke boost diesel engine in the turbo charge system.Power medium speed diesel big or middle is further to reduce weight per unit power, degree of boost is more and more higher, this research and design to pressurization system is had higher requirement, as: have that good full performance of operating condition, exhaust energy utilization ratio want high, cylinder scavenging is smooth and easy, step response will be got well, exhaust pipe structure is simple as much as possible, will be easy to realize that producing in serial form and turbine will adopt single import etc. as far as possible, above-mentioned requirements is difficult to realize in a kind of pressurization system sometimes.Therefore, must be according to the practical use and the condition of diesel engine, reasonably preferred pressurization system.For turbo charge system, according to the structure characteristic of exhaust piping, existing already present pressurization system has five kinds of basic patterns promptly: constant pressure charging system, impulse pressure charging system, pulse converter supercharging system, modular pulse converter supercharging system and gas flow guiding composite pulse conversion turbo supercharging system.Constant pressure charging system scavenging interference is little, the pumping work loss is little, but this system is not suitable for low-load performance and the demanding occasion of step response.Impulse pressure charging system can avoid scavenging to disturb, and can utilize the exhaust pulses energy preferably again, and swept volume is big, low-load performance is good, and the cylinder number that this system is suitable for is restricted.The pulse converter supercharging system has reduced the turbine windage loss that the turbine part inlet loss that caused because of the many imports of turbine and the emptying of part outlet pipe are caused, and the reducing by pulse converter is to suppress between institute's each cylinder of platoon tracheae pressure wave to the interference of scavenging, but this system bulk is big, structure is complicated, and the manufacturing cost height.Each exhaust branch pipe of modular pulse converter supercharging system is made the scavenging that reducing suppresses between each cylinder and is disturbed, this system existing exhaust close pulsation capacity usage ratio with pulse turbocharging system, the turbine efficiency close with the level pressure turbo charge system also arranged, can take into account high low-load performance preferably, the exhaust piping structure is quite simple, be convenient to processing, existing use is comparatively general; But shortcoming is when using on 8 cylinder machines, and the scavenging meeting between each cylinder is disturbed, and the inblock cylinder temperature that causes being disturbed increases, influences reliability, arranges temperature sometimes and increases even make diesel engine not reach predetermined electric power.In prior art, number of patent application is 200710047675.1, denomination of invention is in the application for patent of gas flow guiding composite pulse conversion turbo supercharging system, a kind of pressurization system that is applicable to 4～20 cylinder types is disclosed, its structure is: adopt several cylinders of the structure of pulse converter, close turbine end to adopt the structural type of modular pulse converter supercharging system away from 2～4 cylinders of turbine end, this system compares with the level pressure system, can utilize exhaust pulsation energy better, better transient state and acceleration performance are arranged; With the impulse pressure charging system ratio, simple in structure, the pumping work loss is little, the turbine efficiency height; With pulses switch pressurization system ratio, the pumping work loss is little, has avoided big scavenging to disturb, and structure is also uncomplicated; With modular pulse converter supercharging system ratio, its scavenging interference is little, the pumping work loss is few; But this pressurization system exhaust piping structure more complicated.
Summary of the invention
In order to overcome the deficiency of prior art, the invention provides a kind of module type multifunctional pulse conversion turbocharging system, in the exhaust pipeline section, can not form scavenging and disturb, can produce by the seriation module type, and be adapted to the high-power four-cycle diesel of the various supercharging levels of any 4 to 20 cylinders.
The technological scheme taked of the present invention is for achieving the above object: this system comprises cylinder, exhaust branch pipe, exhaust pipeline section, turbine and guide plate, each exhaust pipeline section is connected to form exhaust manifold, the outlet of exhaust manifold is connected with the import of turbine, guide plate inserts in the exhaust pipeline section in the joint of exhaust branch pipe and exhaust pipeline section, and extends to parallel axes with the exhaust pipeline section gradually along flow direction of exhaust gases; Guide plate is the arcuation structure, guide plate is connected with the inner wall smooth of exhaust pipeline section at the insertion position, the position, two edges of guide plate all is connected with the inner wall smooth of exhaust pipeline section, and guide plate is divided into exhaust pipeline section Upstream section, exhaust pipeline section tract and exhaust branch pipe extension three parts to the exhaust pipeline section; The exhaust branch pipe extension is connected with exhaust branch pipe is streamlined; The sectional area of exhaust pipeline section Upstream section dwindles gradually, and the discharge area of exhaust pipeline section Upstream section and the ratio range of import sectional area are 0.75 to 0.8; Exhaust branch pipe, exhaust pipeline section and guide plate fix as one.
Beneficial effect of the present invention:
The outlet port of exhaust pipeline section Upstream section can form high velocity air, forms a low pressure area in the outlet port of exhaust branch pipe extension, makes scavenging not only help scavenging without interruption on the contrary.The air-flow of the air-flow of exhaust pipeline section Upstream section outlet and the outlet of exhaust branch pipe extension basically all with exhaust pipeline section parallel axes, do not produce interference in air flow mutually, make the gas flow loss drop to minimum.The present invention is simple in structure, and occupy-place is less, can the seriation module type produces, and easy accessibility, reduces maintenance time and expense, is adapted to the high-power four-cycle diesel of the various supercharging levels of any 4 to 20 cylinders.
Description of drawings
Fig. 1 is the structural representation of turbo charge system of the present invention;
Fig. 2 is the scheme of installation of guide plate in the turbo charge system of the present invention
Fig. 3 is the structural representation that guide plate among the present invention, exhaust branch pipe and exhaust pipeline section are connected;
Fig. 4 is the left view of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, concrete enforcement of the present invention is further described.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention includes cylinder 1, exhaust branch pipe 2, exhaust pipeline section 4, turbine 8 and guide plate 7, each exhaust pipeline section 4 is connected to form exhaust manifold, the outlet of exhaust manifold is connected with the import of turbine 8, guide plate 7 inserts in the exhaust pipeline section 4 in the joint of exhaust branch pipe 2 and exhaust pipeline section 4, and extends to parallel axes with exhaust pipeline section 4 gradually along flow direction of exhaust gases; Guide plate 7 is the arcuation structure, guide plate 7 is connected with the inner wall smooth of exhaust pipeline section 4 at the insertion position, the position, two edges of guide plate 7 all is connected with the inner wall smooth of exhaust pipeline section 4, and guide plate 7 is divided into exhaust pipeline section Upstream section 5, exhaust pipeline section tract 6 and exhaust branch pipe extension 3 three parts to exhaust pipeline section 4; Exhaust branch pipe extension 3 and 2 streamlined connections of exhaust branch pipe; The sectional area of exhaust pipeline section Upstream section 5 dwindles gradually, and the discharge area of exhaust pipeline section Upstream section 5 and the ratio range of import sectional area are 0.75 to 0.8; Exhaust branch pipe 2, exhaust pipeline section 4 and guide plate 7 fix as one.The initial position of guide plate 7 is in the joint of exhaust branch pipe 2 and exhaust pipeline section 4, guide plate 7 extends in exhaust pipeline section 4 along flow direction of exhaust gases, last always extending to the axis of exhaust pipeline section 4 parallels, be that the angle of cut that guide plate 7 extends to the axis of exhaust pipeline section 4 at last always is a zero degree, as shown in Figure 2.Along flow direction of exhaust gases, the initial position from the import of exhaust pipeline section 5 to guide plate 7, the sectional area of exhaust pipeline section upstream extremity 5 also is diminishing, so can link together with the inner wall smooth of exhaust pipeline section 4 at the initial position guide plate 7 of guide plate 7.Guide plate 7 is the arcuation structure, and the position, two edges of guide plate 7 is connected with the inner wall smooth of exhaust pipeline section 4, and as shown in Figure 4, the mobile performance of exhaust is better like this.Because exhaust branch pipe 2 import cross-sectional sizes are by the cross-sectional sizes decision of the cylinder head air outlet flue of each type, exhaust branch pipe 2 and exhaust branch pipe extension 3 streamlined linking into an integrated entity are so exhaust branch pipe 2 and exhaust branch pipe extension 3 are not limited to the reducing shape.When the High Temperature High Pressure exhaust flows to exhaust pipeline section 4 from exhaust branch pipe, outlet port at arm, pressure wave converts speed wave to, air-flow is divided into two-layer in exhaust pipeline section 4 simultaneously, blast air when the upstream cylinder in exhaust pipeline section 4 is out-of-date, because the ratio range of the discharge area of exhaust pipeline section Upstream section 5 and the import sectional area of exhaust pipeline section Upstream section 5 is 0.75 to 0.8, make pressure wave convert speed wave in the outlet port of exhaust pipeline section Upstream section 5, this high velocity air forms a low pressure area in the outlet port of exhaust branch pipe extension 3, this moment, exhaust pressure in exhaust manifold did not raise, and this makes the scavenging of cylinder not only help scavenging without interruption on the contrary.The incoming flow of upstream cylinder be the exit flow of exhaust pipeline section Upstream section 5 and exhaust branch pipe extension 3 air-flow basically with the parallel axes of exhaust pipeline section 4, do not produce interference in air flow mutually, make the gas flow loss drop to minimum, this makes that the gas flow loss reduces in the whole exhaust piping, improved the exhaust energy transmission efficiency, the diesel engine thermal efficiency is improved.Under the situation that does not influence scavenging, do the diameter of exhaust pipeline section 4 more lessly, then whole exhaust manifold volume diminishes, can improve low-load performance and load acceleration performance, make it to reach the level of modular pulse converter supercharging system, and be higher than the performance of pulse converter supercharging system and level pressure system.The present invention can make whole exhaust piping make module type, and this reduces production costs to the producing in serial form advantageous particularly; Whole pressurization system exhaust piping is simple in structure, and occupy-place is less, easy accessibility, reduces maintenance time and expense, is adapted to the high-power four-cycle diesel of the various supercharging levels of any 4 to 20 cylinders.
Through test, the present invention is compared as follows with turbo charge system performance commonly used both at home and abroad: system compares with level pressure, and during high operating mode, the qigong of level pressure systems pumps is lost littler than the present invention, but the exhaust energy transmission efficiency is low, so rate of fuel consumption is close; And low operating mode and loading when quickening, performance of the present invention is much more superior than the level pressure system; The exhaust piping of the two is all fairly simple.System compares with pulse converter, among the present invention the runner reducing less, flow losses are little, and higher in the exhaust energy transmission efficiency; And in the pulse converter system, be two pulses in each exhaust branch pipe, and the back has reducing to make energy transfer efficiency low, and therefore about the engine fuel consumption rate low 2～5g/kW.h of diesel engine of the present invention than pulse converter supercharging system, delivery temperature can reduce by 10～20 ℃; And exhaust piping of the present invention is simple in structure, and can make diesel engine, the realization producing in serial form of various cylinder numbers.System compares with modular pulse converter supercharging, among the present invention the exhaust piping reducing less, pumping work loss is less, thus rate of fuel consumption than the low 2～5g/kW.h of modular pulse converter supercharging system about; And each cylinder delivery temperature is more even and lower, avoiding the scavenging between each cylinder to disturb on the 8 cylinder machines; Low-load performance and loading acceleration performance are all good; The exhaust piping of the two is all fairly simple, be beneficial to producing in serial form.Compare with gas flow guiding composite pulse conversion turbo supercharging system, close on performance: rate of fuel consumption can reduce by 1～3g/kW.h, and delivery temperature reduces by 10～20 ℃; Structurally more simple than gas flow guiding composite pulse conversion turbo supercharging system, help producing in serial form.Compare pumping work loss of the present invention with 6,9 cylinder pulse systems little, so rate of fuel consumption can be low slightly; Though coefficient of scavenging is littler, reached requirement; And to 5,7,8 cylinder diesel producing in serial form is favourable.
Claims (1)
1. module type multifunctional pulse conversion turbocharging system, comprise cylinder (1), exhaust branch pipe (2), exhaust pipeline section (4) and turbine (8), each exhaust pipeline section (4) is connected to form exhaust manifold, the outlet of exhaust manifold is connected with the import of turbine (8), it is characterized in that also comprising guide plate (7), guide plate (7) inserts in the exhaust pipeline section (4) in the joint of exhaust branch pipe (2) and exhaust pipeline section (4), and extends to parallel axes with exhaust pipeline section (4) gradually along flow direction of exhaust gases; Guide plate (7) is the arcuation structure, guide plate (7) is connected with the inner wall smooth of exhaust pipeline section (4) at the insertion position, the position, two edges of guide plate (7) all is connected with the inner wall smooth of exhaust pipeline section (4), and guide plate (7) is divided into exhaust pipeline section Upstream section (5), exhaust pipeline section tract (6) and exhaust branch pipe extension (3) three parts to exhaust pipeline section (4); Exhaust branch pipe extension (3) and streamlined connection of exhaust branch pipe (2); The sectional area of exhaust pipeline section Upstream section (5) dwindles gradually, and the discharge area of exhaust pipeline section Upstream section (5) and the ratio range of import sectional area are 0.75 to 0.8; Exhaust branch pipe (2), exhaust pipeline section (4) and guide plate (7) fix as one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102030294A CN101413423A (en) | 2008-11-20 | 2008-11-20 | Module type multifunctional pulse conversion turbocharging system |
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| CNA2008102030294A CN101413423A (en) | 2008-11-20 | 2008-11-20 | Module type multifunctional pulse conversion turbocharging system |
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| CN101413423A true CN101413423A (en) | 2009-04-22 |
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| CNA2008102030294A Pending CN101413423A (en) | 2008-11-20 | 2008-11-20 | Module type multifunctional pulse conversion turbocharging system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400757A (en) * | 2011-10-31 | 2012-04-04 | 上海交通大学 | Anti-interference module type quasi pulse turbo charging system |
| CN102400760A (en) * | 2011-11-21 | 2012-04-04 | 重庆潍柴发动机厂 | Asymmetric simplified exhaust pulse converter |
| CN102418587A (en) * | 2011-10-28 | 2012-04-18 | 上海交通大学 | Variable geometry exhaust pipe turbocharging system |
| CN102454474A (en) * | 2010-10-21 | 2012-05-16 | Dr.Ing.h.c.F.保时捷股份公司 | Internal combustion engine |
| CN102926861A (en) * | 2012-11-25 | 2013-02-13 | 淄博淄柴新能源有限公司 | High-power nine-cylinder gas engine |
| CN108019267A (en) * | 2017-11-17 | 2018-05-11 | 无锡开普动力有限公司 | Large bore engine modular exhaust gas manifold structure |
-
2008
- 2008-11-20 CN CNA2008102030294A patent/CN101413423A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454474A (en) * | 2010-10-21 | 2012-05-16 | Dr.Ing.h.c.F.保时捷股份公司 | Internal combustion engine |
| US8991177B2 (en) | 2010-10-21 | 2015-03-31 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine |
| CN102418587A (en) * | 2011-10-28 | 2012-04-18 | 上海交通大学 | Variable geometry exhaust pipe turbocharging system |
| CN102400757A (en) * | 2011-10-31 | 2012-04-04 | 上海交通大学 | Anti-interference module type quasi pulse turbo charging system |
| CN102400757B (en) * | 2011-10-31 | 2013-05-22 | 上海交通大学 | Anti-interference module type quasi pulse turbo charging system |
| CN102400760A (en) * | 2011-11-21 | 2012-04-04 | 重庆潍柴发动机厂 | Asymmetric simplified exhaust pulse converter |
| CN102926861A (en) * | 2012-11-25 | 2013-02-13 | 淄博淄柴新能源有限公司 | High-power nine-cylinder gas engine |
| CN108019267A (en) * | 2017-11-17 | 2018-05-11 | 无锡开普动力有限公司 | Large bore engine modular exhaust gas manifold structure |
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Open date: 20090422 |