CN205578384U - Second grade supercharged diesel engine hydraulic means based on waste gas utilization - Google Patents
Second grade supercharged diesel engine hydraulic means based on waste gas utilization Download PDFInfo
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- CN205578384U CN205578384U CN201620274483.9U CN201620274483U CN205578384U CN 205578384 U CN205578384 U CN 205578384U CN 201620274483 U CN201620274483 U CN 201620274483U CN 205578384 U CN205578384 U CN 205578384U
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- hydraulic
- diesel engine
- hydraulic motor
- control unit
- oil
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Abstract
The utility model provides a second grade supercharged diesel engine hydraulic means based on waste gas utilization, including fuel feed pump, hydraulic pump, reducing gear, high pressure stage turbo charger, low -pressure stage turbo charger, diesel engine, a hydraulic motor, the 2nd hydraulic motor etc. Oil pipe passes hydraulic pump, the control unit, a hydraulic motor, second solenoid valve, the control unit, hydraulic pump in proper order and forms a confined hydraulic pressure working circuit no. 1, oil pipe passes hydraulic pump, the control unit, first solenoid valve, the 2nd hydraulic motor, the control unit, hydraulic pump in proper order and forms a confined hydraulic pressure working circuit no. 2. The utility model discloses an its quick start can be assisted in the aspect when the low -pressure stage booster is cut, too high diesel engine burning variation, the smoke intensity emission that results in of pressure ratio increased the scheduling problem when on the other hand solution moved in high operating mode at the diesel engine, and the while provides auxiliary propulsion power for the diesel engine.
Description
Technical field
This utility model relates to a kind of hydraulic means, particularly relates to a kind of two-stage supercharging diesel engine hydraulic device based on exhaust gas utilization,
It is particularly well-suited to two-stage supercharging.
Background technology
Two turbocharging technology is risen the forties in 20th century, and its major design purpose is to expand diesel engine supercharging ratio,
Improve the power of diesel engine further.So-called two-stage turbocharger, is by two different size of turbocharger series operations,
Opening and compress through two stage compressor, and cooled down by charge air cooler after low-pressure stage is compressed, two compressors can be by coaxially or not
Two coaxial exhaust driven gas turbines drive.Compared with single stage turbocharger system, Two Stage Turbocharging System is readily available the highest supercharging pressure
Power, range of operation can be expanded, it is simple to and diesel engine mates.
Turbo-charged diesel is loading and there is " turbo lag " phenomenon in accelerator, and its reason is that fuel system is permissible
Accelerated loading is made fast reaction, and the speed that enough exhaust energies arrive at turbine is more slowly, and part energy is also
Need to be used for accelerating turbocharger itself, cause the boost pressure of any time in transient process to be less than corresponding steady state condition
Under boost pressure.The deficiency of air inflow makes in-cylinder combustion be deteriorated, and noxious emission especially particulate matter (PM) significantly increases
Add.Same, for Two Stage Turbocharging System, low-pressure stage supercharger start-up course also can produce " turbo lag " phenomenon,
Burning is caused to be deteriorated, deterioration of emission；If it addition, supercharger mate with diesel engine bad, operate in specified work at diesel engine
During condition, pressure ratio may be caused too high, the thermic load of diesel engine crosses the problems such as height, it is therefore desirable to bleed off one in the declared working condition moment
Portion discharge.At present in the patent authorized or announce, relate to diesel engine hydraulic device especially two-stage supercharging diesel engine
Seldom, such as " hydraulic self-adaption air valve correct-timing variable system of diesel engine and the control method " of Application No. " 2010102417764 ",
Relate to a kind of engine valve timing hydraulic self-adaption variable system, be used for improving air distribution system.Application No.
" hydraulic starting energy storage device of diesel engine " of " 201110158442.5 ", relates to can automatically carrying out hydraulic pressure during a kind of diesel engine work
The device of energy storage.Foregoing invention device all refers to diesel engine hydraulic and utilizes device, but is not the most to utilize exhaust energy to assist bavin
Oil machine driving means, does not the most apply to Two Stage Turbocharging System.
Summary of the invention
The purpose of this utility model is to transport at diesel engine to it be assisted when low-pressure stage supercharger is cut quickly to start, solve
Diesel combustion variations that row pressure ratio when high operating mode is too high to be caused, the problem such as smoke emission increase, simultaneously for diesel engine offer
Auxiliary propulsion power and a kind of two-stage supercharging diesel engine hydraulic device based on exhaust gas utilization is provided.
The purpose of this utility model be achieved in that include oil feed pump, hydraulic pump, reduction gearing, hiigh pressure stage turbocharger,
Lower pressure stage turbocharger, diesel engine, the first hydraulic motor, the second hydraulic motor, the first hydraulic motor is arranged on low-pressure stage and increases
Depressor power transmission shaft is near the outside of compressor, and outlet and entrance at the first hydraulic motor connect the first electromagnetic valve by oil circuit, the
Two hydraulic motors are arranged on crankshaft of diesel engine front end, and outlet and entrance at the second hydraulic motor connect the second electromagnetic valve by oil circuit,
Between the hydraulic oil oil-out and low pressure oil oil return opening of hydraulic pump by oil circuit connect control unit, lower pressure stage turbocharger and
It is connected with inlet manifold and the exhaust main of diesel engine respectively after the series connection of hiigh pressure stage turbocharger, described lower pressure stage turbocharger
Turbine be parallel with turbine bypass valve, compressor is parallel with compressor bypass valve, compressor bypass valve is provided with valve lift pass
Sensor, diesel powered take-off (propeller) shaft is provided with speed probe, valve lift sensor, speed probe, the first electricity
Magnet valve and the second electromagnetic valve are all connected with ECU.
The control method of a kind of two-stage supercharging diesel engine hydraulic device based on exhaust gas utilization, including oil feed pump, hydraulic pump, deceleration
Gear, hiigh pressure stage turbocharger, lower pressure stage turbocharger, diesel engine, the first hydraulic motor, the second hydraulic motor, the
One hydraulic motor is arranged on low-pressure stage intensifier driven axle near the outside of compressor, and outlet and entrance at the first hydraulic motor lead to
Crossing oil circuit and connect the first electromagnetic valve, the second hydraulic motor is arranged on crankshaft of diesel engine front end, in the outlet of the second hydraulic motor with enter
Mouth connects the second electromagnetic valve by oil circuit, connects control by oil circuit between the hydraulic oil oil-out and low pressure oil oil return opening of hydraulic pump
After unit processed, lower pressure stage turbocharger and the series connection of hiigh pressure stage turbocharger respectively with inlet manifold and the exhaust main of diesel engine
Connecting, the turbine of described lower pressure stage turbocharger is parallel with turbine bypass valve, compressor is parallel with compressor bypass valve, calms the anger
Valve lift sensor is installed on machine bypass valve, diesel powered take-off (propeller) shaft is provided with speed probe, valve lift
Sensor, speed probe, the first electromagnetic valve and the second electromagnetic valve are all connected with ECU, and oil pipe is sequentially connected with hydraulic pump, control
Unit, the first hydraulic motor, the second electromagnetic valve, control unit, hydraulic pump also form the hydraulic loop one of closing；Oil pipe
It is sequentially connected with hydraulic pump, control unit, the first electromagnetic valve, the second hydraulic motor, control unit, hydraulic pump and forms closing
Hydraulic loop two,
(1), during diesel engine low speed, only hiigh pressure stage turbocharger operation, the first electromagnetic valve and the second electromagnetic valve be turned off, liquid
Pressure device does not works；
(2), during diesel engine high speed, during lower pressure stage turbocharger incision, the first closed electromagnetic valve, the second electromagnetic valve is opened, oily
Material flows along performance loop one；
(3), when diesel engine is close to rated speed, the second closed electromagnetic valve, the first electromagnetic valve unlatching, oil plant is second-rate along performance loop
Dynamic.
This utility model also includes so some architectural features:
1. oil pipe is sequentially connected with hydraulic pump, control unit, the first hydraulic motor, the second electromagnetic valve, control unit, hydraulic pump also
Form the hydraulic loop one closed；Oil pipe be sequentially connected with hydraulic pump, control unit, the first electromagnetic valve, the second hydraulic motor,
Control unit, hydraulic pump also form the hydraulic loop two of closing.
Compared with prior art, the beneficial effects of the utility model are: this utility model is on the one hand when low-pressure stage supercharger is cut
It can be assisted quickly to start, on the other hand solve the too high diesel combustion caused of pressure ratio when diesel engine operates in high operating mode
The problems such as variation, smoke emission increase, provide auxiliary propulsion power for diesel engine simultaneously.This utility model is particularly well-suited to two grades
Supercharging, it is possible to solve to cause in-cylinder combustion to be deteriorated due to " turbo lag " in low-pressure stage supercharger handoff procedure, noxious emission
The problem increased, improves the stationarity of diesel engine two-stage supercharging handoff procedure.
Accompanying drawing explanation
Fig. 1 is two-stage supercharging diesel engine turbine hydraulic system structure schematic diagram of the present utility model；
Fig. 2 is ECU workflow diagram of the present utility model；
In figure: 1-lower pressure stage turbocharger, 2-turbine bypass valve, 3-hiigh pressure stage turbocharger, 4-reduction gearing, 5-hydraulic pressure
Pump, 6-oil feed pump, 7-fuel tank, 8-diesel engine transmission gear, 9-the second hydraulic motor, 10-speed probe, 11-ECU, 12-
Second electromagnetic valve, 13-the first electromagnetic valve, 14-the first hydraulic motor, 15-valve lift sensor, 16-compressor bypass valve is (low
Arbitrarily downgrade), 17-control unit, A, B, C, D are cylinders, and A1, B1, C1, D1 are exhaust manifolds, A2, B2, C2,
D2 is inlet manifold, and I, II are aerofluxus, inlet manifold respectively.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
This utility model includes two-stage supercharging diesel engine, hydraulic pump 5, reduction gearing 4, hydraulic motor, bypass valve, control unit
17, oil feed pump 6, oil pipe, sensor, ECU11 etc..Hydraulic pump 5 and reduction gearing 4 are coaxially mounted to hiigh pressure stage supercharger
Power transmission shaft is near the outside of turbine.First hydraulic motor 14 is arranged on low-pressure stage intensifier driven axle near the outside of compressor,
Outlet and the entrance of the first hydraulic motor 14 connect the first electromagnetic valve 13 by oil circuit；Second hydraulic motor 9 is arranged on diesel engine 8
Crankshaft front end, outlet and entrance at the second hydraulic motor 9 connect the second electromagnetic valve 12 by oil circuit.High pressure at hydraulic pump 5
Connecting control unit 17 by oil circuit between oil oil-out and low pressure oil oil return opening, oil pipe sequentially passes through hydraulic pump 5, control unit
17, first hydraulic motor the 14, second electromagnetic valve 12, control unit 17, hydraulic pump 5 and formed one close hydraulic
Loop one, constitutes the single stage supercharging performance loop to the two-stage supercharging handoff procedure moment, is wherein high before the first hydraulic motor 14
Force feed road, the first hydraulic motor 14 is low pressure oil way later；Oil pipe sequentially passes through hydraulic pump 5, control unit the 17, first electromagnetism
Valve the 13, second hydraulic motor 9, control unit 17, hydraulic pump 5 also form a hydraulic loop two closed, and constitute two
The performance loop in level supercharging moment, is wherein high-pressure oil passage before the second hydraulic motor 9, and the second hydraulic motor 9 is low pressure later
Oil circuit.；Oil pipe sequentially passes through hydraulic pump 5, control unit the 17, first electromagnetic valve the 13, second hydraulic motor 9, control unit
17, hydraulic pump 5 and formed one close hydraulic loop two.First hydraulic motor 14 is arranged on low-pressure stage supercharger and calms the anger
On machine bypass valve 16；Speed probe 10 is arranged on diesel powered take-off (propeller) shaft.ECU11 passes through the first hydraulic motor
14 gather low-pressure stage supercharger air compressor bypass valve 16 opening signal, send the first electromagnetic valve 13 and are turned on and off instruction；
ECU11 gathers diesel engine actual speed signal by speed probe 10, sends the second electromagnetic valve 12 and is turned on and off instruction.
In conjunction with Fig. 2 ECU workflow diagram, when low-pressure stage booster turbine supercharger starts to start, the first electromagnetic valve 13 cuts out,
Second electromagnetic valve 12 is opened, and hydraulic means performance loop one runs；After low-pressure stage booster turbine supercharger has started,
First, second electromagnetic valve 12 is fully open, and two performance loop of hydraulic means do not run；At diesel engine close to rated speed
When 90%, the first electromagnetic valve 13 is opened, the second electromagnetic valve 12 cuts out, and hydraulic means performance loop two runs.
When hydraulic means performance loop one runs, hiigh pressure stage booster turbine drives hydraulic pump 5 to pressurize oil plant, pressurized high pressure
Oil plant can drive the first hydraulic motor 14, drives low-pressure stage supercharger air compressor to rotate, and so, a part of exhaust energy is with liquid
The form of pressure is for the quick startup of auxiliary low pressure level turbocharger 1.
When hydraulic means performance loop two runs, hiigh pressure stage booster turbine drives hydraulic pump 5 to pressurize oil plant, pressurized high pressure
Oil plant can drive the second hydraulic motor 9, drives diesel powered output shaft to rotate, and so, a part of exhaust energy is with liquid pressure
The form of power is for the auxiliary propulsion power of diesel engine.
When hydraulic means performance loop two runs, a part of exhaust energy is used for the auxiliary propulsion of diesel engine with the form of fluid pressure
Power, reduces for compressed-air actuated energy, and Two Stage Turbocharging System pressure ratio reduces, and the pressure ratio preventing pressure charging system is too high.
When diesel engine runs to certain rotating speed, and level pressure level supercharger is started working, at low-pressure stage supercharger air compressor bypass valve 16
The first hydraulic motor 14 gather the beginning starting state number of bypass valve and pass to ECU11, ECU11 and pass to the first electromagnetic valve
13 out codes, the first electromagnetic valve 13 cuts out rapidly, and hydraulic means performance loop runs at the beginning.
When low-pressure stage supercharger starts completely, the first hydraulic motor 14 at low-pressure stage supercharger air compressor bypass valve 16 gathers
The complete starting state number of bypass valve passes to ECU11, ECU11 and passes to the first electromagnetic valve 13 open command, the first electromagnetism
Valve 13 is opened rapidly, and hydraulic means performance loop one is out of service.
When diesel engine actual speed is close to the 90% of rated speed, speed probe 10 is arranged on diesel powered output transmission
Speed probe 10 on axle, gathers diesel engine speed signal and passes to ECU11, if actual speed reaches rated speed
90%, then ECU11 passes to the second electromagnetic valve 12 open command, and the second electromagnetic valve 12 player opens, and hydraulic means works back
Road two brings into operation.
The time delay changed with pressure and temp due to the compressibility of hydraulic oil, between master control supercharger speed and hydraulic motor rotary speed
There is not linear relationship, cause hydraulic pump 5 outgoing quality flow rate the most not mated with hydraulic motor import mass flowrate.Therefore
And need to install a control unit 17 between hydraulic pump 5 and hydraulic motor, to balance closed loop oil plant mass flowrate.
Leakage is inevitably produced, so needing to arrange a confession due to hydraulic pump 5, hydraulic motor, control unit 17 etc.
Oil pump 6 extracts the oil plant in fuel tank 7 to make up the loss of hydraulic circuit.
It addition, two bypass valves are driven by external power source, such as the main feeder of engine room.
First hydraulic motor 14 is installed outside low-pressure stage supercharger air compressor, is conducive to assisting it when low-pressure stage supercharger is cut
Quickly start.
Take crankshaft front end at diesel engine and the second hydraulic motor 9 is installed, be conducive to providing auxiliary to push away in diesel engine high operating mode for diesel engine
Enter power.
Near the outside of turbine, hydraulic pump 5 and reduction gearing 4 are installed at hiigh pressure stage intensifier driven axle, are conducive at diesel engine high
Prevent pressure ratio too high during operating mode.
Speed probe 10 is arranged on diesel powered take-off (propeller) shaft, is conducive to monitoring in real time the rotating speed size of diesel engine.The
One hydraulic motor 14 is arranged on low-pressure stage supercharger air compressor bypass valve 16, is conducive to monitoring low-pressure stage supercharger in real time to calm the anger
The opening of machine bypass valve 16.
Gathered the opening signal of low-pressure stage supercharger air compressor bypass valve 16 by the first hydraulic motor 14, ECU11 is permissible
Control being turned on and off of the first electromagnetic valve 13.
Gathered the tach signal of diesel engine by speed probe 10, ECU11 can contrast diesel engine actual running speed and bavin
The proportionate relationship of oil machine rated speed determines being turned on and off of the second electromagnetic valve 12.
The state that is turned on and off of the first electromagnetic valve 13 is by the state that is turned on and off of low-pressure stage supercharger air compressor bypass valve 16 certainly
Fixed.
The state that is turned on and off of the second electromagnetic valve 12 is by the proportionate relationship of diesel engine actual running speed Yu diesel engine rated speed
Determine.
When low-pressure stage booster turbine supercharger starts to start, the first electromagnetic valve 13 cuts out, the second electromagnetic valve 12 is opened, liquid
Pressure device performance loop one runs；After low-pressure stage booster turbine supercharger has started, first, second electromagnetic valve 12 is complete
Portion opens, and two performance loop of hydraulic means do not run；When diesel engine is close to rated speed 90%, the first electromagnetic valve 13
Open, the second electromagnetic valve 12 cuts out, and hydraulic means performance loop one runs.
When hydraulic means performance loop one runs, hiigh pressure stage booster turbine drives hydraulic pump 5 to pressurize oil plant, pressurized high pressure
Oil plant can drive the first hydraulic motor 14, drives low-pressure stage supercharger air compressor to rotate, and so, a part of exhaust energy is with liquid
The form of pressure is for the quick startup of auxiliary low pressure level turbocharger 1.
When hydraulic means performance loop two runs, hiigh pressure stage booster turbine drives hydraulic pump 5 to pressurize oil plant, pressurized high pressure
Oil plant can drive the second hydraulic motor 9, drives diesel powered output shaft to rotate, and so, a part of exhaust energy is with liquid pressure
The form of power is for the auxiliary propulsion power of diesel engine.
When hydraulic means performance loop two runs, a part of exhaust energy is used for the auxiliary propulsion of diesel engine with the form of fluid pressure
Power, reduces for compressed-air actuated energy, and Two Stage Turbocharging System pressure ratio reduces, and the pressure ratio preventing pressure charging system is too high.
When diesel engine runs to certain rotating speed, and low-pressure stage supercharger is started working, at low-pressure stage supercharger air compressor bypass valve 16
The first hydraulic motor 14 gather the beginning starting state number of bypass valve and pass to ECU11, ECU11 and pass to the first electromagnetic valve
13 out codes, the first electromagnetic valve 13 cuts out rapidly, and hydraulic means performance loop runs at the beginning.
When low-pressure stage supercharger starts completely, the first hydraulic motor 14 at low-pressure stage supercharger air compressor bypass valve 16 gathers
The complete starting state number of bypass valve passes to ECU11, ECU11 and passes to the first electromagnetic valve 13 open command, the first electromagnetism
Valve 13 is opened rapidly, and hydraulic means performance loop one is out of service.
When diesel engine actual speed is close to the 90% of rated speed, speed probe 10 is arranged on diesel powered output transmission
Speed probe 10 on axle, gathers diesel engine speed signal and passes to ECU11, if actual speed reaches rated speed
90%, then ECU11 passes to the second electromagnetic valve 12 out code, and the second electromagnetic valve 12 cuts out rapidly, and hydraulic means works back
Road two brings into operation.
Oil feed pump 6 extracts the oil in fuel tank 7, provides oil plant to make up the every leakage in hydraulic circuit for whole hydraulic circuit.
Claims (2)
1. a two-stage supercharging diesel engine hydraulic device based on exhaust gas utilization, it is characterised in that: include oil feed pump, hydraulic pump,
Reduction gearing, hiigh pressure stage turbocharger, lower pressure stage turbocharger, diesel engine, the first hydraulic motor, the second hydraulic motor,
First hydraulic motor is arranged on low-pressure stage intensifier driven axle near the outside of compressor, at outlet and the entrance of the first hydraulic motor
Connecting the first electromagnetic valve by oil circuit, the second hydraulic motor is arranged on crankshaft of diesel engine front end, the second hydraulic motor outlet and
Entrance connects the second electromagnetic valve by oil circuit, is connected by oil circuit between the hydraulic oil oil-out and low pressure oil oil return opening of hydraulic pump
Control unit, lower pressure stage turbocharger and hiigh pressure stage turbocharger are total with the inlet manifold of diesel engine and aerofluxus respectively after connecting
Pipe connects, and the turbine of described lower pressure stage turbocharger is parallel with turbine bypass valve, compressor is parallel with compressor bypass valve, pressure
Valve lift sensor is installed on mechanism of qi bypass valve, diesel powered take-off (propeller) shaft is provided with speed probe, air valve liter
Journey sensor, speed probe, the first electromagnetic valve and the second electromagnetic valve are all connected with ECU.
A kind of two-stage supercharging diesel engine hydraulic device based on exhaust gas utilization the most according to claim 1, it is characterised in that:
Oil pipe is sequentially connected with hydraulic pump, control unit, the first hydraulic motor, the second electromagnetic valve, control unit, hydraulic pump and forms envelope
The hydraulic loop one closed；Oil pipe is sequentially connected with hydraulic pump, control unit, the first electromagnetic valve, the second hydraulic motor, control
Unit, hydraulic pump also form the hydraulic loop two of closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274483.9U CN205578384U (en) | 2016-04-06 | 2016-04-06 | Second grade supercharged diesel engine hydraulic means based on waste gas utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274483.9U CN205578384U (en) | 2016-04-06 | 2016-04-06 | Second grade supercharged diesel engine hydraulic means based on waste gas utilization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205578384U true CN205578384U (en) | 2016-09-14 |
Family
ID=56864198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620274483.9U Withdrawn - After Issue CN205578384U (en) | 2016-04-06 | 2016-04-06 | Second grade supercharged diesel engine hydraulic means based on waste gas utilization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205578384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782141A (en) * | 2016-04-06 | 2016-07-20 | 哈尔滨工程大学 | Two-phase supercharged diesel hydraulic device based on waste gas utilization and control method |
-
2016
- 2016-04-06 CN CN201620274483.9U patent/CN205578384U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782141A (en) * | 2016-04-06 | 2016-07-20 | 哈尔滨工程大学 | Two-phase supercharged diesel hydraulic device based on waste gas utilization and control method |
| CN105782141B (en) * | 2016-04-06 | 2017-10-03 | 哈尔滨工程大学 | A kind of two-stage supercharging diesel engine hydraulic device and control method based on exhaust gas utilization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20171003 |
|
| AV01 | Patent right actively abandoned |