CN103352754A - Multi-mode large and small turbocharger diesel engine sequential supercharging structure - Google Patents
Multi-mode large and small turbocharger diesel engine sequential supercharging structure Download PDFInfo
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- CN103352754A CN103352754A CN2013102774214A CN201310277421A CN103352754A CN 103352754 A CN103352754 A CN 103352754A CN 2013102774214 A CN2013102774214 A CN 2013102774214A CN 201310277421 A CN201310277421 A CN 201310277421A CN 103352754 A CN103352754 A CN 103352754A
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- Y02T10/12—Improving ICE efficiencies
Abstract
The invention aims at providing a multi-mode large and small turbocharger diesel engine sequential supercharging structure which comprises a small supercharger and a large supercharger, wherein a turbine of the small supercharger is communicated with an exhaust port of a diesel engine through an A row exhaust pipe, a turbine of the large supercharger is communicated with the exhaust port of the diesel engine through a B row exhaust pipe, a gas compressor of the small supercharger is communicated with an intercooler through an A row inlet pipe, a gas compressor of the large supercharger is communicated with the intercooler through a B row inlet pipe, the A row exhaust pipe and the B row exhaust pipe are communicated through an exhaust communication pipe, a first gas valve is arranged between the joint of the exhaust communication pipe and the A row exhaust pipe and the turbine of the small supercharger, a second gas valve is arranged between the joint of the exhaust communication pipe and the B row exhaust pipe and the turbine of the large supercharger, a first air valve is arranged on the A row inlet pipe, and a second air valve is arranged on the B row inlet pipe. The multi-mode large and small turbocharger diesel engine sequential supercharging structure enables the diesel engine to be switched into a non-supercharging mode at idle speed, and improves air inlet efficiency at the idle speed.
Description
Technical field
What the present invention relates to is a kind of diesel engine, specifically the pressure structure of diesel engine.
Background technique
The sequential pressurizing technology is the technology that German MTU of late 1970s company at first adopts, its design mainly is in order to enlarge the operating range of low compression ratio, high blower engine, the fuel consumption rate when increasing the low speed torque of motor and reducing operation at part load.Its basic principle is to adopt a plurality of turbosupercharger, growth with engine speed and load, in succession put into operation in order, so just can guarantee that the turbosupercharger that work moves at high efficient area all the time, so that the fuel consumption rate of motor is all lower in whole running district, low-speed big is functional.Its principle is similar to variable geometry turbocharger, but different, and consecutive pressurization system has not only changed the turbine nozzle area, and has changed the flow area of gas compressor, the overall efficiency of pressurized machine when having improved low-load.
Along with the development of diesel engine sequential pressurizing technology, big or small pressurized machine sequential pressurizing technology has appearred, namely has in the diesel engine sequential pressurizing structure of 2 pressurized machines, the size of 2 pressurized machines is different.Motor can be adjusted pressurization system 3 operation areas, as only use little pressurized machine when hanging down load, only uses large pressurized machine during middle load, and the size pressurized machine all comes into operation during high capacity.
Supercharged diesel engine is when idling, and cylinder intake successively passes through compressor inlet port, compressor impeller, intercooler, suction tude, finally enters cylinder.Engine exhaust pipe, gas inlet casing, turbine, air outlet flue are successively passed through in exhaust, enter atmosphere again.In this process, because the existence of pressurized machine makes the air inlet of motor and the resistance that exhaust all has been subject to pressurized machine.During idling, exhaust energy is very little, and pressurized machine is operated in ultralow efficiency area, and the existence of compressor impeller has increased intake resistance, and the existence of turbine blade has increased exhaust resistance, the intake efficiency of motor when having affected idling from negative angle.
In the patent of having applied for, " adjustable high boost system with structure of series-parallel connection of turbochargers in different size " (200510025774.0), " three stage of big and small turbochargers sequential turbocharging device " (200820157308.7), " adjustable pressurization system of serial-parallel boilers of big and small turbochargers " (200910072418.2) relate to the content of big and small turbochargers pressurization system.But these 3 patents do not relate to the content of improving the supercharged diesel engine idling performance.
Summary of the invention
The object of the present invention is to provide to make diesel engine when idling, switch to non pressurized pattern, thus the multi-mode big and small turbochargers diesel engine of the intake efficiency when improving idling order pressure structure.
The object of the present invention is achieved like this:
Multi-mode big and small turbochargers diesel engine order pressure structure of the present invention, comprise diesel engine, intercooler, intercooler is connected with the suction port of diesel engine, it is characterized in that: also comprise little pressurized machine and large pressurized machine, the turbine of little pressurized machine is communicated with the relief opening of diesel engine by A row outlet pipe, the turbine of large pressurized machine is communicated with the relief opening of diesel engine by B row outlet pipe, the gas compressor of little pressurized machine is communicated with intercooler by A row suction tude, the gas compressor of large pressurized machine is communicated with intercooler by B row suction tude, between A row outlet pipe and the B row outlet pipe by being connected exhaust connecting tube, between the turbine of the joint of exhaust connecting tube and A row outlet pipe and little pressurized machine, the first gas valve is set, between the turbine of the joint of exhaust connecting tube and B row outlet pipe and large pressurized machine, the second gas valve is set, on the A row suction tude the first air valve is set, on the B row suction tude the second air valve is set.
The present invention can also comprise:
1, between the suction port of intercooler and diesel engine suction valve is set, in exhaust connecting tube outlet valve is set, suction valve and outlet valve all are communicated with atmosphere.
Advantage of the present invention is: the intake and exhaust feature when the present invention considers Idling Process for Diesel Engine, installing suction valve behind the intercooler and between the suction tude additional, in the middle of exhaust connecting tube, install outlet valve additional, can make motor when idling, switch to naturally aspirated Diesel, improve the intake efficiency of motor, improve burning, reduce discharging, Reduce fuel consuming rate.Simultaneously, because the existence of big or small pressurized machine order pressure structure can make motor hand do 4 working areas, adopt non pressurized pattern during idling, adopt little pressurized machine during little load, adopt large pressurized machine during middle load, the size pressurized machine is worked simultaneously during high capacity.Like this, motor can have preferably intake efficiency in full operating mode.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For example the present invention is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1, multi-mode diesel engine big and small turbochargers order pressure structure involved in the present invention is made of diesel engine 1, pressurized machine 9,12, intercooler 4, diesel engine air inlet- outlet pipe 3,16,17, control valve etc., wherein the size dimension of 2 pressurized machines is had any different. and suction valve 2 one ends link to each other with atmosphere, and the other end links to each other with suction tude 17.Outlet valve 18 1 ends link to each other with atmosphere, and the other end linked to each other with exhaust connecting tube 5.Gas valve A7 one end links to each other with little booster turbine 8, and the other end links to each other with A row outlet pipe 3.Air valve A6 one end links to each other with little supercharger air compressor 10, and the other end links to each other with intercooler 4.Gas valve B14 one end links to each other with large booster turbine 13, and the other end links to each other with B row outlet pipe 16.Air valve B15 one end links to each other with large supercharger air compressor 11, and the other end links to each other with intercooler 4.
In the sequential supercharged diesel engine running, diesel engine sequential pressurizing control system gathers the Operational Limits of motor, during engine start, it is idling mode, gas valve A, air valve A, gas valve B, air valve B all close, and suction valve and outlet valve are opened, and this moment, motor was in non pressurized pattern, intake resistance and exhaust resistance are all less, are conducive to engine combustion.When the running state of motor has reached the switching condition of little turbosupercharger, gas valve A and air valve A open, and suction valve and exhaust valve closure, pressurization system enter little pressurized machine pattern.When the operating conditions of motor further improves, reached the switching condition of large pressurized machine, gas valve B and air valve B open, and gas valve A and air valve A close, and this moment, suction valve and outlet valve also were in closed condition, and pressurization system enters large pressurized machine pattern.Engine operation condition further improves, and when having reached the switching condition that big or small pressurized machine all comes into operation, gas valve A and air valve A also open, and this moment, big and small turbochargers all came into operation, and pressurization system enters into big or small pressurized machine pattern.
In like manner, when the operating conditions of motor reduced, according to the switching condition of various patterns, the on off state of each valve got final product when keeping each pattern.That is, during idling mode, gas valve A, air valve A, gas valve B, air valve B close, and suction valve and outlet valve are opened.During little pressurized machine pattern, suction valve, outlet valve, gas valve B, air valve B close, and gas valve A and air valve A open.During large pressurized machine pattern, suction valve, outlet valve, gas valve A, air valve A close, and gas valve B and air valve B open.During size pressurized machine pattern, gas valve A, air valve A, gas valve B, air valve B open, suction valve and exhaust valve closure.
The present invention mainly protects " non pressurized " scheme that big and small turbochargers order supercharged diesel engine improves idling performance.Namely installing suction valve behind the intercooler and between the suction tude additional, in the middle of exhaust connecting tube, installing outlet valve additional, can make diesel engine when idling, switch to non pressurized pattern, the intake efficiency when improving idling.
Claims (2)
1. multi-mode big and small turbochargers diesel engine order pressure structure, comprise diesel engine, intercooler, intercooler is connected with the suction port of diesel engine, it is characterized in that: also comprise little pressurized machine and large pressurized machine, the turbine of little pressurized machine is communicated with the relief opening of diesel engine by A row outlet pipe, the turbine of large pressurized machine is communicated with the relief opening of diesel engine by B row outlet pipe, the gas compressor of little pressurized machine is communicated with intercooler by A row suction tude, the gas compressor of large pressurized machine is communicated with intercooler by B row suction tude, between A row outlet pipe and the B row outlet pipe by being connected exhaust connecting tube, between the turbine of the joint of exhaust connecting tube and A row outlet pipe and little pressurized machine, the first gas valve is set, between the turbine of the joint of exhaust connecting tube and B row outlet pipe and large pressurized machine, the second gas valve is set, on the A row suction tude the first air valve is set, on the B row suction tude the second air valve is set.
2. multi-mode big and small turbochargers diesel engine according to claim 1 order pressure structure, it is characterized in that: between the suction port of intercooler and diesel engine, suction valve is set, in exhaust connecting tube outlet valve is set, suction valve and outlet valve all are communicated with atmosphere.
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| CN2013102774214A CN103352754A (en) | 2013-07-03 | 2013-07-03 | Multi-mode large and small turbocharger diesel engine sequential supercharging structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464787A (en) * | 2016-01-13 | 2016-04-06 | 哈尔滨工程大学 | Composite sequential turbocharging structure for turbo-charged diesel engine and turbocharging method for composite sequential turbocharging structure |
| CN105484855A (en) * | 2016-01-13 | 2016-04-13 | 哈尔滨工程大学 | Multi-stage adjustable successive supercharged diesel engine supercharging structure and control method |
| CN105508035A (en) * | 2016-01-13 | 2016-04-20 | 哈尔滨工程大学 | Supercharged diesel engine multi-mode switch supercharging structure and method |
| CN105545461A (en) * | 2016-01-13 | 2016-05-04 | 哈尔滨工程大学 | Adjustable sequential supercharging structure and method for diesel engine |
| CN105756774A (en) * | 2016-04-06 | 2016-07-13 | 哈尔滨工程大学 | Diesel engine four-stage-switching sequential pressurizing device and control device |
| CN105927428A (en) * | 2016-04-28 | 2016-09-07 | 重庆长安汽车股份有限公司 | Engine intake and exhaust system with switchable mode |
| CN113047941A (en) * | 2021-03-19 | 2021-06-29 | 广西玉柴机器股份有限公司 | Multi-state parallel supercharging system |
| CN114278428A (en) * | 2021-12-30 | 2022-04-05 | 潍柴动力股份有限公司 | Successive supercharging switching control method and successive supercharging system |
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| CN101182803A (en) * | 2007-12-06 | 2008-05-21 | 哈尔滨工程大学 | Adjustable consecutive composite turbocharging system |
| CN101182804A (en) * | 2007-12-06 | 2008-05-21 | 哈尔滨工程大学 | consecutive pressure boost and air inlet controllable whirling currents combine system of high supercharged diesel |
| CN101215989A (en) * | 2008-01-17 | 2008-07-09 | 上海交通大学 | Internal combustion engine exhaust turbine pressurization system possessing natural air inlet device |
| CN201314255Y (en) * | 2008-12-18 | 2009-09-23 | 上海交通大学 | Three-stage sequential turbocharger of large and small turbocharger |
| US20110265771A1 (en) * | 2011-05-12 | 2011-11-03 | Ford Global Technologies, Llc | Methods and Systems for Variable Displacement Engine Control |
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Patent Citations (5)
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| CN101182803A (en) * | 2007-12-06 | 2008-05-21 | 哈尔滨工程大学 | Adjustable consecutive composite turbocharging system |
| CN101182804A (en) * | 2007-12-06 | 2008-05-21 | 哈尔滨工程大学 | consecutive pressure boost and air inlet controllable whirling currents combine system of high supercharged diesel |
| CN101215989A (en) * | 2008-01-17 | 2008-07-09 | 上海交通大学 | Internal combustion engine exhaust turbine pressurization system possessing natural air inlet device |
| CN201314255Y (en) * | 2008-12-18 | 2009-09-23 | 上海交通大学 | Three-stage sequential turbocharger of large and small turbocharger |
| US20110265771A1 (en) * | 2011-05-12 | 2011-11-03 | Ford Global Technologies, Llc | Methods and Systems for Variable Displacement Engine Control |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464787A (en) * | 2016-01-13 | 2016-04-06 | 哈尔滨工程大学 | Composite sequential turbocharging structure for turbo-charged diesel engine and turbocharging method for composite sequential turbocharging structure |
| CN105484855A (en) * | 2016-01-13 | 2016-04-13 | 哈尔滨工程大学 | Multi-stage adjustable successive supercharged diesel engine supercharging structure and control method |
| CN105508035A (en) * | 2016-01-13 | 2016-04-20 | 哈尔滨工程大学 | Supercharged diesel engine multi-mode switch supercharging structure and method |
| CN105545461A (en) * | 2016-01-13 | 2016-05-04 | 哈尔滨工程大学 | Adjustable sequential supercharging structure and method for diesel engine |
| CN105508035B (en) * | 2016-01-13 | 2017-12-19 | 哈尔滨工程大学 | Supercharged diesel engine multi-mode switches pressurized construction and boosting method |
| CN105756774A (en) * | 2016-04-06 | 2016-07-13 | 哈尔滨工程大学 | Diesel engine four-stage-switching sequential pressurizing device and control device |
| CN105756774B (en) * | 2016-04-06 | 2018-03-13 | 哈尔滨工程大学 | A kind of diesel engine level Four transfer sequence supercharging device and control method |
| CN105927428A (en) * | 2016-04-28 | 2016-09-07 | 重庆长安汽车股份有限公司 | Engine intake and exhaust system with switchable mode |
| CN113047941A (en) * | 2021-03-19 | 2021-06-29 | 广西玉柴机器股份有限公司 | Multi-state parallel supercharging system |
| CN114278428A (en) * | 2021-12-30 | 2022-04-05 | 潍柴动力股份有限公司 | Successive supercharging switching control method and successive supercharging system |
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Application publication date: 20131016 |