CN105484855A - Multi-stage adjustable successive supercharged diesel engine supercharging structure and control method - Google Patents
Multi-stage adjustable successive supercharged diesel engine supercharging structure and control method Download PDFInfo
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- CN105484855A CN105484855A CN201610021074.2A CN201610021074A CN105484855A CN 105484855 A CN105484855 A CN 105484855A CN 201610021074 A CN201610021074 A CN 201610021074A CN 105484855 A CN105484855 A CN 105484855A
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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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/007—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in parallel, e.g. at least one pump supplying alternatively
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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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
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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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention aims at providing a multi-stage adjustable successive supercharged diesel engine supercharging structure and a control method. The multi-stage adjustable successive supercharged diesel engine supercharging structure comprises a basic turbine supercharger, a controlled turbine supercharger, a basic tee-joint ball valve and a controlled tee-joint ball valve. A diesel engine air inlet pipe comprises an A-line air inlet pipe and a B-line air inlet pipe. A diesel engine air outlet pipe comprises an A-line air outlet pipe and a B-line air outlet pipe. The diesel engine A-line air inlet pipe and the diesel engine B-line air inlet pipe are communicated through an air inlet communicating pipe. The diesel engine A-line air outlet pipe and the diesel engine B-line air outlet pipe are communicated through an air outlet communicating pipe. Intercoolers are arranged at the diesel engine air inlet pipe respectively. An air valve is installed at an outlet of a controlled air compressor. The basic tee-joint ball valve is arranged on a basic turbine outlet pipeline. The controlled tee-joint ball valve is arranged on a controlled turbine inlet pipe. The matching performance of the turbine supercharger and the diesel engine can be effectively improved, especially, the requirement for air inlet of the supercharged diesel engine under medium-low-load different rotating speeds can be met, and the performance of the whole supercharged diesel engine is improved.
Description
Technical field
What the present invention relates to is a kind of engine block and controlling method thereof, specifically diesel engine supercharging structure and controlling method thereof.
Background technique
Supercharging technology is adopted to be improve diesel engine power effective method the most, the growth that diesel engine power is proportional along with the raising of boost pressure.Adopt exhaust gas turbocharge not only can improve the fuel economy of diesel engine, the diesel engine thermal efficiency can also be improved, improve diesel emission performance etc.At present, exhaust turbine pressuring technology is widely used at diesel engine arts.
Run because the turbosupercharger of high speed rotary motion and reciprocating diesel engine coordinate, be difficult to take into account diesel engine overall performance, therefore how realize turbosupercharger and diesel engine realizes the difficult point that matched well becomes research.Normal conditions, marine diesel engine is reference when mating turbosupercharger with declared working condition, therefore turbosupercharger is in high-efficiency operation state; But when diesel engine operates in partial load condition, diesel exhaust gas flow reduces, turbine efficiency reduces, thus cause boost pressure too low, and diesel engine intake quantity not sufficient, in-cylinder combustion worsens, fuel consumption rate and row's temperature all raise, diesel emission performance obviously reduces, and is therefore necessary to further investigate the matching problem of turbosupercharger and diesel engine, thus improves diesel engine full working scope ride quality.
For above problem, work out multiple supercharging mode at present, as high operating mode venting pressurization system, variable geometry turbocharger system, low operating mode intake and exhaust bypass pressurization system, Two Stage Turbocharging System and consecutive pressurization system etc.Wherein, consecutive pressurization system refer to two or multiple stage turbosupercharger in parallel with diesel engine, according to the difference of diesel engine operating conditions, change the quantity of the turbosupercharger put into operation, thus make turbosupercharger obtain sufficient exhaust energy all the time and operate in high efficient area.Sequential pressurizing technology improves the most effective way of high pressure-charging high-power diesel engine discharge at present, can significantly expand diesel engine range of operation, improve fuel economy and reduce pollutant emission, can improve acceleration performance simultaneously.Although various supercharging mode can matching problem between improvement diesel engine to a certain degree and turbosupercharger, be still and respectively have pluses and minuses, as two-stage supercharging is particularly suitable for the operating mode such as the slow-speed of revolution, high load, sequential pressurizing is particularly suitable for high rotating speed, low-load etc.How being combined by various supercharging mode, obtaining better diesel engine ride quality is worth studying further.
Application number: the switching that can realize between separate unit turbosupercharging, two parallel turbine superchargings, the supercharging of intake and exhaust bypassed turbine, high operating mode venting turbosupercharging recorded in the patent " adjustable consecutive composite turbocharging system " of 200710144757.9, expands the range of operation of supercharged diesel engine; Application number: achieve single-stage turbocharging, sequential turbocharging and two turbocharging in the patent " adjustable high boost system with structure of series-parallel connection of turbochargers in different size " of 200510025774.0, makes the excursion of turbine equivalent circulation area wider; Application number is: the patent " multi-mode big and small turbochargers diesel engine order pressure structure " of 201310277421.4 realizes the switching of non pressurized pattern, little turbosupercharger pattern, large turbosupercharger pattern and big and small turbochargers pattern by arranging 6 control valves, improve the intake efficiency under diesel engine full working scope.Although technological scheme described in above patent all contributes to the overall performance improving diesel engine, but still there is the common issue being worth improving, that is exactly how more to simplify, more comprehensively cover diesel engine more multi-operating mode, and is not limited only to the switching between existing classical mode.
Summary of the invention
The object of the present invention is to provide and can realize single turbine supercharging, high low pressure series boosting, sequential pressurizing, high low pressure mixing series parallel connection supercharging and the high operating mode venting multistage adjustable consecutive supercharged diesel engine pressure structure of boost mode and controlling method respectively.
The object of the present invention is achieved like this:
Multistage adjustable consecutive supercharged diesel engine pressure structure of the present invention, it is characterized in that: comprise A row cylinder, B row cylinder, basic turbosupercharger, controlled turbosupercharger, basic tee ball valve, controlled tee ball valve, described basic turbosupercharger comprises coaxial basic turbine and basic gas compressor, described controlled turbosupercharger comprises coaxial controlled turbine and controlled gas compressor, basic gas compressor connects A row cylinder by A row suction tude, basic turbine connects A row cylinder by A row outlet pipe, controlled gas compressor connects B row cylinder by B row suction tude, controlled turbine connects B row cylinder by B row outlet pipe, A row suction tude and B row suction tude were communicated by air inlet connecting tube, A row outlet pipe and B row outlet pipe are communicated by communicating exhaust gas pipe, first port of basic tee ball valve is connected with basic turbine outlet, second port of basic tee ball valve communicates with air, 3rd port of basic tee ball valve is connected with the 3rd port of controlled tee ball valve, controlled tee ball valve is arranged on B row outlet pipe, first port of controlled tee ball valve communicates with B row outlet pipe, second port of controlled tee ball valve is connected with controlled turbine inlet.
Multistage adjustable consecutive supercharged diesel engine pressure structure of the present invention can also comprise:
1, A row suction tude is installed A row intercooler, B row suction tude is installed B row intercooler, the B row suction tude between controlled gas compressor and air inlet connecting tube installs air valve.
Multistage adjustable consecutive supercharged diesel engine supercharging control method of the present invention, it is characterized in that: adopt following pressure structure: comprise A row cylinder, B row cylinder, basic turbosupercharger, controlled turbosupercharger, basic tee ball valve, controlled tee ball valve, described basic turbosupercharger comprises coaxial basic turbine and basic gas compressor, described controlled turbosupercharger comprises coaxial controlled turbine and controlled gas compressor, basic gas compressor connects A row cylinder by A row suction tude, basic turbine connects A row cylinder by A row outlet pipe, controlled gas compressor connects B row cylinder by B row suction tude, controlled turbine connects B row cylinder by B row outlet pipe, A row suction tude and B row suction tude were communicated by air inlet connecting tube, A row outlet pipe and B row outlet pipe are communicated by communicating exhaust gas pipe, first port of basic tee ball valve is connected with basic turbine outlet, second port of basic tee ball valve communicates with air, 3rd port of basic tee ball valve is connected with the 3rd port of controlled tee ball valve, controlled tee ball valve is arranged on B row outlet pipe, first port of controlled tee ball valve communicates with B row outlet pipe, second port of controlled tee ball valve is connected with controlled turbine inlet, A row suction tude is installed A row intercooler, B row suction tude is installed B row intercooler, B row suction tude between controlled gas compressor and air inlet connecting tube installs air valve,
(1) when diesel engine is in low-load, the slow-speed of revolution, close air valve, open basic tee ball valve first port and the second port, close basic tee ball valve the 3rd port, close controlled tee ball valve first port simultaneously:
The exhaust of A row directly enters basic turbine, the exhaust of B row enters basic turbine via communicating exhaust gas pipe, basic turbine drives basic gas compressor work, basic turbosupercharger is devoted oneself to work, pressurized air is by after basic blower outlet, and A row suction tude of leading up to enters A row cylinder, and another road is via entering B row suction tude air inlet connecting tube, enter B row cylinder afterwards again, this pattern is single turbine boost mode;
(2) when diesel engine is in low-load, rotating speed increase, open the first port and the 3rd port of basic tee ball valve, close basic tee ball valve second port, open the second port and the 3rd port of controlled tee ball valve, close controlled tee ball valve first port, open air valve:
The exhaust of A row directly enters basic turbine, and the exhaust of B row enters basic turbine via communicating exhaust gas pipe, and basic turbine drives basic gas compressor work, and basic turbosupercharger is devoted oneself to work, and this is high-pressure turbine; The waste gas of basic turbine outlet does not directly enter air, via basic tee ball valve first port-three port channel, enter exhaust gas bypass pipe, controlled turbine is flowed into again via controlled tee ball valve the 3rd port-the second port channel, controlled turbine drives controlled gas compressor work, controlled turbosupercharger is devoted oneself to work, and the secondary completing waste gas utilizes, and this is low-pressure turbine; Basic gas compressor is all connected with air with controlled compressor inlet, and the pressurized air after basic gas compressor and controlled blower outlet enters cylinder of diesel engine by A row suction tude and B row suction tude, and this pattern is high low pressure mixing series boosting pattern;
(3) when diesel engine is in low-load, high rotating speed, open the first port and second port of basic tee ball valve, close basic tee ball valve the 3rd port, open the first port and second port of controlled tee ball valve, close controlled tee ball valve the 3rd port, open air valve:
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe, enter basic turbine inlet and controlled tee ball valve first port respectively; Basic turbine drives basic gas compressor work, after basic turbine outlet waste gas via basic tee ball valve the first port-the second port between passage directly enter air, be vented after between the first port-the second port via controlled tee ball valve, passage enters controlled turbine, drive the final vacuum air of controlled gas compressor work, basic turbosupercharger and controlled turbosupercharger parallel connection are devoted oneself to work simultaneously, are now sequential pressurizing pattern;
(4) when diesel engine is in high rotating speed, load increase, open the first port and the 3rd port of basic tee ball valve, close basic tee ball valve second port, open three ports of controlled tee ball valve simultaneously, open air valve:
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe, enter basic turbine inlet and controlled tee ball valve first port respectively, basic turbine drives basic gas compressor work, basic turbosupercharger is devoted oneself to work, after basic turbine outlet waste gas via basic tee ball valve the first port-three port between passage, enter exhaust gas bypass pipe, flow to controlled tee ball valve the 3rd port; The low pressure exhaust gas being entered high pressure exhaust gas by controlled tee ball valve first port and entered by controlled tee ball valve the 3rd port, flow out via controlled tee ball valve second port and enter controlled turbine, now the working state of controlled tee ball valve is " two enter one goes out "; Controlled turbine drives controlled gas compressor work, controlled turbosupercharger is devoted oneself to work, basic gas compressor is all connected with air with controlled compressor inlet, pressurized air after basic gas compressor and controlled blower outlet enters cylinder of diesel engine by A row suction tude and B row suction tude, and this pattern is high low pressure mixing series parallel connection boost mode;
(5) when diesel engine is in high rotating speed, high load, open three ports of basic tee ball valve simultaneously, open three ports of controlled tee ball valve simultaneously, open air valve (13):
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe, enter basic turbine inlet and controlled tee ball valve first port respectively, basic turbine drives basic gas compressor work, basic turbosupercharger is devoted oneself to work, and after basic turbine outlet, waste gas enters air via passage between basic tee ball valve first port-the second port.The high pressure exhaust gas part entered by controlled tee ball valve first port enters exhaust gas bypass pipe via controlled tee ball valve the 3rd port, directly air is entered via passage between basic tee ball valve the 3rd port-the second port, another part enters in controlled turbine via controlled tee ball valve second port, and now the working state of controlled tee ball valve is " one enters scene 2 "; Controlled turbine drives controlled gas compressor work, controlled turbosupercharger is devoted oneself to work, basic gas compressor is all connected with air with controlled compressor inlet, pressurized air after basic gas compressor and controlled blower outlet enters cylinder of diesel engine by A row suction tude and B row suction tude, and this pattern is high operating mode venting boost mode.
Advantage of the present invention is: the present invention by installing basic tee ball valve, installing controlled tee ball valve before controlled turbine inlet after basic turbine, according to the change of diesel load and rotating speed, single turbine supercharging, high low pressure series boosting, sequential pressurizing, high low pressure mixing series parallel connection supercharging and high operating mode venting boost mode can be realized respectively, effectively can improve the matching performance of turbosupercharger and diesel engine, particularly can meet the air inlet demand of supercharged diesel engine under middle-low load different rotating speeds, improve the overall performance of supercharged diesel engine.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is basic tee ball valve port schematic diagram;
Fig. 3 is controlled tee ball valve port schematic diagram.
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
Composition graphs 1 ~ 3, the present invention includes cylinder of diesel engine, basic turbine 3, basic gas compressor 2, controlled turbine 15, controlled gas compressor 14, air inlet connecting tube 5, communicating exhaust gas pipe 8, basic tee ball valve 1, controlled tee ball valve 12, air valve 13, A row intercooler 7 and B row intercooler 9.It is characterized in that: basic turbine 3 and basic gas compressor 2 constitute basic turbosupercharger, controlled turbine 15 and controlled gas compressor 14 constitute controlled turbosupercharger, air inlet pipe of diesel engine comprises A row suction tude 6 and B row suction tude 10, Diesel Engine Exhaust Pipe comprises A row outlet pipe 4 and B row outlet pipe 11, diesel engine A, B row outlet pipe realizes intercommunication by communicating exhaust gas pipe 8, and diesel engine A, B row suction tude realizes intercommunication by air inlet connecting tube 5; A row intercooler 7 is arranged in diesel engine A row suction tude 6, and B row intercooler 9 is arranged in diesel engine B row suction tude 10, and air valve 13 is arranged on controlled gas compressor 14 outlet port.
Install basic tee ball valve 1 at basic turbine 3 outlet conduit place, basic tee ball valve 1 first port #1 exports with basic turbine 3 and is connected, and the second port #2 is connected with air, and the 3rd port #3 is connected with the 3rd port #6 of controlled tee ball valve 12;
At controlled turbine 15 inlet pipe place, controlled tee ball valve 12 is installed, controlled tee ball valve 12 first port #4 exports with B row outlet pipe 11 and is connected, second port #5 is connected with controlled turbine 15 entrance, and the 3rd port #6 is connected with the 3rd port #3 of basic tee ball valve 1.
3rd port #3 of basic tee ball valve 1 is connected by one section of bypass tube 16 with the 3rd port #6 of controlled tee ball valve 12.
Three ports #1, #2 and #3 of basic tee ball valve 1 all can realize intercommunication, and three ports #4, #5 and #6 of controlled tee ball valve 12 all can realize intercommunication.
Multistage adjustable consecutive supercharged diesel engine pressure structure and controlling method thereof, comprise following pattern:
When diesel engine is in low-load, the slow-speed of revolution, close air valve 13, required air inflow and pressure ratio are all less.Open basic tee ball valve 1 first end outlet #1 and the second port #2, close the 3rd port #3, now only have passage between #1 and #2 port to keep circulation; Close controlled tee ball valve 12 first port #4, now between all of the port, passage all keeps closing simultaneously.
The exhaust of A row directly enters basic turbine 3, the exhaust of B row enters basic turbine 3 via communicating exhaust gas pipe 8, basic turbine 3 drives basic gas compressor 2 to work, then basic turbosupercharger is devoted oneself to work, after pressurized air is exported by basic gas compressor 2, A row suction tude 6 of leading up to enters A row cylinder, and another road is via entering B row suction tude 10 air inlet connecting tube 5, enter B row cylinder afterwards again, this pattern is single turbine boost mode;
When and if only if basic pressurized machine and controlled turbosupercharger vary in size, single turbine boost mode can also comprise: the first port #1 closing basic tee ball valve 1, then controlled turbine quits work.Open the first port #4 and the second port #5 of controlled tee ball valve 12, close the 3rd port #6, passage between #4-#5 port is now only had to keep circulation, open air valve 13, diesel exhaust gas enters controlled turbine 15 through this passage, now has and only has controlled turbosupercharger to devote oneself to work.
When diesel engine be in low-load, rotating speed increase gradually time, required pressure is smaller, and required air inflow increases gradually.Open the first port #1 and the 3rd port #3 of basic tee ball valve 1, close the second port #2, now only have passage between #1 and #2 port to keep circulation; Open the second port #5 and the 3rd port #6 of controlled tee ball valve 12, close the first port #4, now only have passage between #5 and #6 port to keep circulation; Open air valve 13.
The exhaust of A row directly enters the exhaust of basic turbine 3, B row and enters basic turbine 3 via communicating exhaust gas pipe 8, and basic turbine 3 drives basic gas compressor 2 to work, then basic turbosupercharger is devoted oneself to work, and this is high-pressure turbine; The waste gas that basic turbine 3 exports directly does not enter air, via #1-#3 passage, enter exhaust gas bypass pipe 16, controlled turbine 15 is flowed into again via #6-#5 passage, controlled turbine 15 drives controlled gas compressor 14 to work, then controlled turbosupercharger is devoted oneself to work, and the secondary completing waste gas utilizes, and this is low-pressure turbine; Basic gas compressor 2 is all connected with air with controlled gas compressor 14 entrance, and the pressurized air after basic gas compressor 2 and controlled gas compressor 14 export enters cylinder of diesel engine by A row suction tude 6 and B row suction tude 10, and this pattern is high low pressure mixing series boosting pattern.
Be different from existing two-stage supercharging technology, only basic turbine 3 and controlled turbine 15 realize series operation, and basic gas compressor 2 and controlled gas compressor 14 realize parallel running, and this pattern can provide more air inflow compared to single turbine supercharging.
When diesel engine is in low-load, high rotating speed, lower, the required air inflow of required pressure ratio is larger.Open the first port #1 and the second port #2 of basic tee ball valve 1, close the 3rd port #3, now only have passage between #1 and #2 port to keep circulation; Open the first port #4 and the second port #5 of controlled tee ball valve 12, close the 3rd port #6, now only have passage between #4 and #5 port to keep circulation; Open air valve 13.
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe 8, enter basic turbine 3 entrance and controlled tee ball valve 12 first port #4 respectively; Basic turbine 3 drives basic gas compressor 2 to work, and basic turbine 3 exports rear waste gas and directly enters air via passage between #1-#2 port.After exhaust enters controlled turbine 15 via passage between #4-#5 port, drive the final vacuum air of controlled gas compressor 14 work, then basic turbosupercharger and controlled turbosupercharger parallel connection are devoted oneself to work simultaneously.Now be equivalent to existing sequential pressurizing technology, this pattern is sequential pressurizing pattern, under the low operating mode of supercharged diesel engine can be met, and the requirement of low-pressure ratio large discharge.
When diesel engine be in high rotating speed, load increase to some extent time, required pressure ratio increases more to some extent, required air inflow increases further.Open the first port #1 and the 3rd port #3 of basic tee ball valve 1, close the second port #2, now only have passage between #1-#3 port to keep circulation; Open three ports of controlled tee ball valve 12, now between #4, #5 and #6 tri-ports, passage realizes intercommunication, opens air valve 13 simultaneously.
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe 8, enter basic turbine 3 entrance and controlled tee ball valve 12 first port #4 respectively.Basic turbine 3 drives basic gas compressor 2 to work, and basic turbosupercharger is devoted oneself to work.Basic turbine 3 exports rear waste gas via passage between #1-#3 port, enters exhaust gas bypass pipe 16, flows to #6 port; Enter " high pressure " waste gas and " low pressure " waste gas of entering of #6 port again by #4 port, flow out via #5 port and enter controlled turbine 15, now the working state of controlled tee ball valve 12 is " two enter one goes out "; Controlled turbine 15 drives controlled gas compressor 14 to work, then controlled turbosupercharger is devoted oneself to work.Basic gas compressor 2 is all connected with air with controlled gas compressor 14 entrance, pressurized air after basic gas compressor 2 and controlled gas compressor 14 export enters cylinder of diesel engine by A row suction tude 6 and B row suction tude 10, and this pattern is high low pressure mixing series parallel connection boost mode.
Be different from existing two-stage supercharging technology, only basic turbine 3 and controlled turbine 15 realize series operation, and basic gas compressor 2 and controlled gas compressor 14 realize parallel running; Be different from existing sequential pressurizing technology, basic turbine 3 and controlled turbine 15 both comprised series operation, also comprised parallel operation.The work waste gas of controlled turbine 15 is " high low pressure " mix waste gas.This pattern can realize higher pressure ratio and more air inflow compared to sequential pressurizing supercharging.
When diesel engine is in high rotating speed, high load, in order to prevent cylinder implosion from pressing through height, must be limited suction pressure, to ensure the safe operation of diesel engine.Open three ports of basic tee ball valve 1, now between #1, #2 and #3 port, passage realizes intercommunication simultaneously; Open three ports of controlled tee ball valve 12, now between #4, #5 and #6 tri-ports, passage realizes intercommunication, opens air valve 13 simultaneously.
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe 8, enter basic turbine 3 entrance and controlled tee ball valve 12 first port #4 respectively.Basic turbine 3 drives basic gas compressor 2 to work, and basic turbosupercharger is devoted oneself to work.Basic turbine 3 exports rear waste gas and enters air via passage between #1-#2 port.Enter " high pressure " waste gas part by #4 port and enter exhaust gas bypass pipe 16 via #6 port again, directly air is entered via passage between #3-#2 port, another part enters in controlled turbine 15 via #5 port, and now the working state of controlled tee ball valve 12 is " one enters scene 2 "; Controlled turbine 15 drives controlled gas compressor 14 to work, then controlled turbosupercharger is devoted oneself to work.Basic gas compressor 2 is all connected with air with controlled gas compressor 14 entrance, and the pressurized air after basic gas compressor 2 and controlled gas compressor 14 export enters cylinder of diesel engine by A row suction tude 6 and B row suction tude 10, and this pattern is high operating mode venting boost mode.
Multistage adjustable consecutive supercharged diesel engine pressure structure of the present invention, comprises cylinder of diesel engine, basic turbine, basic gas compressor, controlled turbine, controlled gas compressor, air inlet connecting tube, communicating exhaust gas pipe, basic tee ball valve, controlled tee ball valve, air valve and intercooler.Basic turbine and basic gas compressor constitute basic turbosupercharger, controlled turbine and controlled gas compressor constitute controlled turbosupercharger, air inlet pipe of diesel engine comprises A row suction tude and B row suction tude, Diesel Engine Exhaust Pipe comprises A row outlet pipe and B row outlet pipe, diesel engine A, B row suction tude realizes intercommunication by air inlet connecting tube, and diesel engine A, B row outlet pipe realizes intercommunication by communicating exhaust gas pipe; Intercooler is arranged on air inlet pipe of diesel engine respectively, and air valve is arranged on controlled blower outlet place, and basic tee ball valve is arranged on basic turbine outlet pipeline place, and controlled tee ball valve is arranged on controlled turbine inlet pipeline place.
Basic tee ball valve first port is connected with basic turbine outlet, and the second port is connected with air; Controlled tee ball valve first port is connected with B row exhaust outlet, and the second port is connected with controlled turbine inlet, and the 3rd port of basic tee ball valve is connected by one section of bypass tube with the 3rd port of controlled tee ball valve.
This tee ball valve is installed at basic turbine outlet place, and controlled turbine enters place and installs controlled tee ball valve, and two three-way valve are T-shaped tee ball valve, can realize being interconnected and switching of three passages simultaneously.
Multistage adjustable consecutive supercharged diesel engine boosting method of the present invention, comprises following several modes:
When diesel engine is in low-load, the slow-speed of revolution, close air valve, close the first port of controlled tee ball valve, open basic tee ball valve first port and the second port, close the 3rd port, now only having basic turbosupercharger to devote oneself to work, is now single turbine boost mode;
When diesel engine be in low-load, rotating speed increase gradually time, open the first port and the 3rd port of basic tee ball valve, close the second port, open the second port and the 3rd port of controlled tee ball valve, close the first port, open air valve, basic turbosupercharger and controlled turbosupercharger work simultaneously, and be only limitted to basic turbine and controlled turbines in series work, be now high low pressure series boosting pattern;
When diesel engine is in low-load, high rotating speed, open the first port and second port of basic tee ball valve, close the 3rd port, open the first port and second port of controlled tee ball valve, close the 3rd port, open air valve, basic turbosupercharger and controlled turbosupercharger parallel connection are devoted oneself to work simultaneously, are now sequential pressurizing pattern;
When diesel engine be in high rotating speed, load rise to some extent time, open the first port and the 3rd port of basic tee ball valve, close the second port, open air valve, open three ports of controlled tee ball valve simultaneously, basic turbosupercharger and controlled turbosupercharger are devoted oneself to work simultaneously, and be only limitted to basic turbine and controlled turbine realizes series operation, be now high low pressure mixing series parallel connection boost mode;
When diesel engine is in high rotating speed, high load, open three ports of basic tee ball valve simultaneously, open three ports of controlled tee ball valve simultaneously, open air valve, basic turbosupercharger and controlled turbosupercharger work simultaneously, are now high operating mode venting boost mode.
Claims (3)
1. multistage adjustable consecutive supercharged diesel engine pressure structure, it is characterized in that: comprise A row cylinder, B row cylinder, basic turbosupercharger, controlled turbosupercharger, basic tee ball valve, controlled tee ball valve, described basic turbosupercharger comprises coaxial basic turbine and basic gas compressor, described controlled turbosupercharger comprises coaxial controlled turbine and controlled gas compressor, basic gas compressor connects A row cylinder by A row suction tude, basic turbine connects A row cylinder by A row outlet pipe, controlled gas compressor connects B row cylinder by B row suction tude, controlled turbine connects B row cylinder by B row outlet pipe, A row suction tude and B row suction tude were communicated by air inlet connecting tube, A row outlet pipe and B row outlet pipe are communicated by communicating exhaust gas pipe, first port of basic tee ball valve is connected with basic turbine outlet, second port of basic tee ball valve communicates with air, 3rd port of basic tee ball valve is connected with the 3rd port of controlled tee ball valve, controlled tee ball valve is arranged on B row outlet pipe, first port of controlled tee ball valve communicates with B row outlet pipe, second port of controlled tee ball valve is connected with controlled turbine inlet.
2. multistage adjustable consecutive supercharged diesel engine pressure structure according to claim 1, it is characterized in that: A row suction tude is installed A row intercooler, B row suction tude is installed B row intercooler, the B row suction tude between controlled gas compressor and air inlet connecting tube installs air valve.
3. multistage adjustable consecutive supercharged diesel engine supercharging control method, it is characterized in that: adopt following pressure structure: comprise A row cylinder, B row cylinder, basic turbosupercharger, controlled turbosupercharger, basic tee ball valve, controlled tee ball valve, described basic turbosupercharger comprises coaxial basic turbine and basic gas compressor, described controlled turbosupercharger comprises coaxial controlled turbine and controlled gas compressor, basic gas compressor connects A row cylinder by A row suction tude, basic turbine connects A row cylinder by A row outlet pipe, controlled gas compressor connects B row cylinder by B row suction tude, controlled turbine connects B row cylinder by B row outlet pipe, A row suction tude and B row suction tude were communicated by air inlet connecting tube, A row outlet pipe and B row outlet pipe are communicated by communicating exhaust gas pipe, first port of basic tee ball valve is connected with basic turbine outlet, second port of basic tee ball valve communicates with air, 3rd port of basic tee ball valve is connected with the 3rd port of controlled tee ball valve, controlled tee ball valve is arranged on B row outlet pipe, first port of controlled tee ball valve communicates with B row outlet pipe, second port of controlled tee ball valve is connected with controlled turbine inlet, A row suction tude is installed A row intercooler, B row suction tude is installed B row intercooler, B row suction tude between controlled gas compressor and air inlet connecting tube installs air valve,
(1) when diesel engine is in low-load, the slow-speed of revolution, close air valve, open basic tee ball valve first port and the second port, close basic tee ball valve the 3rd port, close controlled tee ball valve first port simultaneously:
The exhaust of A row directly enters basic turbine, the exhaust of B row enters basic turbine via communicating exhaust gas pipe, basic turbine drives basic gas compressor work, basic turbosupercharger is devoted oneself to work, pressurized air is by after basic blower outlet, and A row suction tude of leading up to enters A row cylinder, and another road is via entering B row suction tude air inlet connecting tube, enter B row cylinder afterwards again, this pattern is single turbine boost mode;
(2) when diesel engine is in low-load, rotating speed increase, open the first port and the 3rd port of basic tee ball valve, close basic tee ball valve second port, open the second port and the 3rd port of controlled tee ball valve, close controlled tee ball valve first port, open air valve:
The exhaust of A row directly enters basic turbine, and the exhaust of B row enters basic turbine via communicating exhaust gas pipe, and basic turbine drives basic gas compressor work, and basic turbosupercharger is devoted oneself to work, and this is high-pressure turbine; The waste gas of basic turbine outlet does not directly enter air, via basic tee ball valve first port-three port channel, enter exhaust gas bypass pipe, controlled turbine is flowed into again via controlled tee ball valve the 3rd port-the second port channel, controlled turbine drives controlled gas compressor work, controlled turbosupercharger is devoted oneself to work, and the secondary completing waste gas utilizes, and this is low-pressure turbine; Basic gas compressor is all connected with air with controlled compressor inlet, and the pressurized air after basic gas compressor and controlled blower outlet enters cylinder of diesel engine by A row suction tude and B row suction tude, and this pattern is high low pressure mixing series boosting pattern;
(3) when diesel engine is in low-load, high rotating speed, open the first port and second port of basic tee ball valve, close basic tee ball valve the 3rd port, open the first port and second port of controlled tee ball valve, close controlled tee ball valve the 3rd port, open air valve:
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe, enter basic turbine inlet and controlled tee ball valve first port respectively; Basic turbine drives basic gas compressor work, after basic turbine outlet waste gas via basic tee ball valve the first port-the second port between passage directly enter air, be vented after between the first port-the second port via controlled tee ball valve, passage enters controlled turbine, drive the final vacuum air of controlled gas compressor work, basic turbosupercharger and controlled turbosupercharger parallel connection are devoted oneself to work simultaneously, are now sequential pressurizing pattern;
(4) when diesel engine is in high rotating speed, load increase, open the first port and the 3rd port of basic tee ball valve, close basic tee ball valve second port, open three ports of controlled tee ball valve simultaneously, open air valve:
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe, enter basic turbine inlet and controlled tee ball valve first port respectively, basic turbine drives basic gas compressor work, basic turbosupercharger is devoted oneself to work, after basic turbine outlet waste gas via basic tee ball valve the first port-three port between passage, enter exhaust gas bypass pipe, flow to controlled tee ball valve the 3rd port; The low pressure exhaust gas being entered high pressure exhaust gas by controlled tee ball valve first port and entered by controlled tee ball valve the 3rd port, flow out via controlled tee ball valve second port and enter controlled turbine, now the working state of controlled tee ball valve is " two enter one goes out "; Controlled turbine drives controlled gas compressor work, controlled turbosupercharger is devoted oneself to work, basic gas compressor is all connected with air with controlled compressor inlet, pressurized air after basic gas compressor and controlled blower outlet enters cylinder of diesel engine by A row suction tude and B row suction tude, and this pattern is high low pressure mixing series parallel connection boost mode;
(5) when diesel engine is in high rotating speed, high load, open three ports of basic tee ball valve simultaneously, open three ports of controlled tee ball valve simultaneously, open air valve (13):
The exhaust of A row and the exhaust of B row complete mixing by communicating exhaust gas pipe, enter basic turbine inlet and controlled tee ball valve first port respectively, basic turbine drives basic gas compressor work, basic turbosupercharger is devoted oneself to work, and after basic turbine outlet, waste gas enters air via passage between basic tee ball valve first port-the second port.The high pressure exhaust gas part entered by controlled tee ball valve first port enters exhaust gas bypass pipe via controlled tee ball valve the 3rd port, directly air is entered via passage between basic tee ball valve the 3rd port-the second port, another part enters in controlled turbine via controlled tee ball valve second port, and now the working state of controlled tee ball valve is " one enters scene 2 "; Controlled turbine drives controlled gas compressor work, controlled turbosupercharger is devoted oneself to work, basic gas compressor is all connected with air with controlled compressor inlet, pressurized air after basic gas compressor and controlled blower outlet enters cylinder of diesel engine by A row suction tude and B row suction tude, and this pattern is high operating mode venting boost mode.
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| CN1737346A (en) * | 2005-05-12 | 2006-02-22 | 上海交通大学 | Adjustable high boost system with structure of series-parallel connection of turbochargers in different size |
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