CN102230418B - Electricity-auxiliary two-stage supercharging system capable of reusing exhaust gas - Google Patents
Electricity-auxiliary two-stage supercharging system capable of reusing exhaust gas Download PDFInfo
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Abstract
The invention relates to an electricity-auxiliary two-stage supercharging system capable of reusing exhaust gas, belonging to the technical field of waste gas turbine supercharging. The electricity-auxiliary two-stage supercharging system specifically comprises the first-stage booster of an electricity-auxiliary turbine, the second-stage booster of a waste gas turbine, an electromagnetic three-way valve, an inlet and outlet pipeline system, a supercharging control circuit and an engine system. In the electricity-auxiliary two-stage supercharging system, the flexible control of opening and closing the three-way electromagnetic valve is used for further improving engine intake pressure by a second-stage supercharging system while solving the problem of waste gas turbine supercharging delaying, thereby realizing the high-pressure ratio of the engine supercharging, and improving the power and the emission performance of the engine under the whole working condition; the waste gas applying work in the second-stage booster of a waste gas turbine can be further utilized in the first-stage booster of an electricity-auxiliary turbine; and a storage battery is charged by power generation to fully utilize waste gas energy and effectively utilize fuel energy. Thus, the electricity-auxiliary two-stage supercharging system has an important energy-saving meaning.
Description
Technical field
The present invention relates to a kind of waste gas and utilize the auxiliary two-step supercharging system of electricity again, belong to the exhaust turbine pressuring technology field.
Background technique
Exhaust turbine pressuring technology is since coming out; Since its increase substantially engine output, improve fuel economy, improve exhaust pollution, the good action of the aspects such as power loss of compensation altitude environment; Obtained universally very greatly, present most DENGs and part petrol engine have all adopted exhaust turbine pressuring technology.
After but vehicular engine adopted turbosupercharging, the roadability of motor also existed a lot of problems to overcome, and one of them is exactly a low-speed performance.When supercharged engine during at low cruise; Owing to exist pneumatic related between pressurized machine and the motor; In acceleration and loading procedure, cooperate the position of travel line skew to occur, the air quantity that gets into cylinder does not catch up with the rate of change of volume read-out; Charge-air pressure is not enough to satisfy the needed air quantity requirement of combusted cylinder, will produce the consequences such as over-emitting black exhaust, moment of torsion is not enough, acceleration is poor, less economical of burning.And under high-speed working condition, can produce the exhaust energy surplus; Cause the turbosupercharger hypervelocity, produce superfluous pressurization energy; Most turbosupercharger are taked is that exhaust gas by-pass valve is opened and discharged part waste gas under the high-speed working condition, and turbosupercharger is only utilized a part of exhaust energy work.Therefore vehicular engine utilizes exhaust turbine pressuring technology to have two major defects at present: the one, and deficiency of air during low speed forms " turbo " effect; The 2nd, exhaust energy can not get utilizing fully during high speed, causes energy dissipation.
In order to improve the above-mentioned defective of supercharged engine, people have proposed the design proposal of the auxiliary one-level turbo charge system of integrated type electricity, though this technology has solved the matching problem of pressurized machine and motor existence.But the problem that the whole system structure mainly exists has: (1) has bigger rotary inertia; (2) machinery is big with heat load; (3) cooling technology requires height, and for Project Realization, difficulty is bigger; (4) exhaust energy is recycled insufficient; (5) the exhaust-gas turbocharger rotating speed is high, and rotor is coaxial with supercharger rotor, and is high to the functional reliability requirement of motor.
For solving the problem of above-mentioned existence; People have proposed two stage turbocharging system, and promptly two turbosupercharger and internal-combustion engine are together in series on gas circuit, generally are divided into low pressure and high pressure two-stage; Low pressure stage adopts larger-size pressurized machine, and high pressure stage adopts the less pressurized machine of size.This two turbocharging systems is comparatively simple technically, and the total efficient of whole system is improved, and the supercharging pressure ratio is higher.But this pressurization system is only applicable to highly supercharged diesel engine, when mean effective pressure 2.0MPa is following, adopts two-stage supercharging unlike single stage supercharging obvious advantage to be arranged on performance parameter.
Summary of the invention
The object of the invention is for solving the problem that turbosupercharging is sluggish, the exhaust gas utilization rate is not high; Simultaneously; Overcome the auxiliary one-level turbosupercharging scheme motor of present integrated type electricity and influenced by high temperature, high speed centrifugation power and the existing shortcoming of current two-stage supercharging system, proposed a kind of waste gas and utilized the auxiliary two-step supercharging system of electricity again.
Waste gas of the present invention utilizes the auxiliary two-step supercharging system of electricity to be electro-mechanical system again, comprises the auxiliary turbine one-level pressurized machine of electricity, exhaust gas turbine two-stage supercharger, three-way solenoid valve system, intake and exhaust pipeline system, pressurization control circuit and engine system.
1, the auxiliary turbine one-level pressurized machine of described electricity comprises one-level supercharger air compressor spiral case, one-level pressure booster blower impeller, one-level booster turbine, one-level booster turbine case, one-level pressurized machine exhaust gas by-pass valve, one-level supercharger rotor, one-level pressurized machine intermediate, electric system.
Wherein, Electric system is made up of rotor and motor stator, the acting as of electric system: when electric system drives one-level supercharger rotor high speed rotating during for electric motor mode, and then drive the rotation of one-level pressure booster blower impeller; Pressurized air, the air inflow of raising engine system; When electric system was generator module, the one-level supercharger rotor drove the rotor generating, and is the charge in batteries of engine system.
Acting as of the auxiliary turbine one-level pressurized machine of electricity: the fast-response that when the engine start operating mode, utilizes the auxiliary one-level pressurized machine of electricity is separately to the motor air feed, and it is sluggish to reduce supercharging, and discharging pollutants when making engine start reduces significantly; When low engine speed full load mode and accelerating mode, cooperate the exhaust gas turbine two-stage supercharger, alleviate that engine acceleration is poor, low-speed performance worsens, air inlet is not enough, and it is undesirable to burn, the deficiency of emission performance, aspect such as less economical; During other operating modes of motor, cooperate the overall pressure tatio of exhaust gas turbine two-stage supercharger raising two-stage supercharging system, increase the air inflow of motor, improve the power of motor.
One-level supercharger air compressor spiral case and one-level pressure booster blower impeller constitute one-level supercharger air compressor end; One-level booster turbine and one-level booster turbine case constitute one-level booster turbine end, and its Placement is consistent with at present common turbocharger air compressor end and turbine end.Rotor is installed on the neutral position of one-level supercharger rotor; The one-level supercharger rotor is positioned on the central axis of one-level pressurized machine intermediate, and its two axial ends connects one-level pressure booster blower impeller and one-level charger turbine turbine respectively; One-level pressurized machine intermediate places outside the rotor, and two ends link to each other with one-level booster turbine case with one-level supercharger air compressor spiral case respectively; Motor stator is installed on the one-level pressurized machine intermediate inwall with the direction relative with rotor; One-level pressurized machine exhaust gas by-pass valve is installed on the one-level booster turbine case.Said motor stator and rotor are formed electric system, and this electric system both can be used as motor and can also use as engine system.
2, said exhaust gas turbine two-stage supercharger comprises two-stage supercharger compressor volute, two-stage supercharger compressor impeller, two-stage supercharger turbine, two-stage supercharger turbine box, two-stage supercharger rotor, two-stage supercharger intermediate and two-stage supercharger bypass valve.
Acting as of exhaust gas turbine two-stage supercharger: during engine operation, exhaust gas driven two-stage supercharger turbine also passes through two-stage supercharger rotor drive two-stage supercharger compressor impeller pressurized air, increases air input of engine by air, improves engine power.
Connection between two-stage supercharger compressor volute, two-stage supercharger compressor impeller, two-stage supercharger turbine, two-stage supercharger turbine box, two-stage supercharger rotor, two-stage supercharger intermediate and the two-stage supercharger bypass valve is consistent with the Placement of current typical turbosupercharger.
3, described three-way solenoid valve system comprises air inlet electromagnetism threeway one step valve and control end, air inlet electromagnetism threeway secondary valve and control end thereof, exhaust electromagnetism threeway secondary valve and control end thereof, exhaust electromagnetism threeway one step valve and control end thereof.
The opening and closing under control end control separately of four three-way solenoid valves in the system realize that the switching of intake and exhaust channel changes.
4, described intake and exhaust pipeline system comprises system inlet, one-level supercharging outlet pipe, two-stage supercharging air intake branch, the two-stage supercharging air inlet person in charge, two-stage supercharging intake manifold, two-stage supercharging gas exhaust manifold, the two-stage supercharging exhaust person in charge, two-stage supercharging exhaust branch pipe, one-level super charge pipe and system exhaust road.
5, described pressurization control circuit comprises A/D modular converter, direct current ac converter module, electromagnetic cross valve control module, frequency transformer control module, accumulation of energy control module, operating mode identification module and rectifier module.
The pressurization control circuit receives the working condition signal from engine system, sends the control signal of three-way solenoid valve system, and according to the operating conditions of motor, through the control end of three-way solenoid valve system, the unlatching of controlling each three-way solenoid valve is with closed.Each module connects through the microcircuit on the circuit board.
6, described engine system is common motor, has comprised the basic comprising of current representative engine, like gas distribution system, crankshaft rod system or the like.
A kind of waste gas of the present invention utilizes the mechanical connection relation between the auxiliary two-step supercharging system of electricity each several part to be again: system's suction tude presses the end import to link to each other with the auxiliary turbine one-level pressurized machine of electricity; The auxiliary turbine one-level supercharger air compressor of electricity brings out mouth and is connected with an end of one-level supercharging outlet pipe, and the one-level supercharging outlet pipe the other end is connected with air inlet electromagnetism threeway one step valve; The two ends in addition of electromagnetism threeway one step valve are connected with two-stage supercharging air intake branch, two-stage supercharger gas compressor end suction port respectively; The other end of two-stage supercharging air intake branch is connected with air inlet electromagnetism threeway secondary valve, and the two ends in addition of air inlet electromagnetism threeway secondary valve are responsible for two-stage supercharging intake manifold, two-stage supercharging air inlet respectively and are connected; The other end that the two-stage supercharging air inlet is responsible for brings out mouth with the two-stage supercharger pressure and links to each other, and the two-stage supercharging intake manifold is connected with the engine system suction port; One end of two-stage supercharging gas exhaust manifold is connected with engine exhaust port, and the other end and exhaust electromagnetism threeway secondary valve connect; The two ends in addition of exhaust electromagnetism threeway secondary valve connect the import of two-stage supercharger turbine end, exhaust electromagnetism threeway one step valve respectively through the two-stage supercharging exhaust person in charge, two-stage supercharging exhaust branch pipe; The two ends in addition of exhaust electromagnetism threeway one step valve are connected with the outlet of two-stage supercharger turbine end, one-level pressurized machine suction tude respectively; The one-level super charge pipe the other end links to each other with the import of one-level booster turbine end; The one-level booster turbine brings out mouth and is connected with the system exhaust road.
Circuit connecting relation of the present invention is: the accelerator pedal sensor of motor, engine rotation speed sensor output signal are passed to the operating mode identification module of pressurization control circuit; The output terminal of the electromagnetic cross valve control module of pressurization control circuit is connected with air inlet electromagnetism threeway one step valve control end, air inlet electromagnetism threeway secondary valve control end, exhaust electromagnetism threeway secondary valve control end, exhaust electromagnetism threeway one step valve control end respectively; The motor storage battery is that pressurization control circuit and motor provide electric power; Pressurization control circuit control module output terminal is connected with electric system.
The working procedure that a kind of waste gas of the present invention utilizes the auxiliary two-step supercharging system of electricity again by: it is that pressurization control circuit and electric system provide electric power that engine system is with storage battery; The pressurization control circuit receives the working condition signal from engine system; Identify the operating mode classification of motor; Send the control signal of three-way solenoid valve system then, according to the different operating modes of motor, different three-way solenoid valves is carried out corresponding opening and closing.The inlet stream of motor is promptly accomplished super charge and exhaust acting process to changing according to the valve direction.The conversion of the working state of electric system also is that the intelligent operating mode identification module according to motor switches, and realizes generator and two kinds of working staties of motor.When motor under startup, acceleration, low speed high load working condition, electric system is an electric motor mode, the auxiliary one-level supercharger rotor of driven by motor electricity quickens rotation; Motor is under the high speed partial load condition, and electric system is a generator mode, is charge in batteries, and the operation of maximum allowed current and voltage limit during to charge in batteries through accumulation of energy control module control.
Beneficial effect
Waste gas of the present invention utilizes the auxiliary two-step supercharging system of electricity to have the following advantages again:
(1) improves engine acceleration and improve engine booster intensity.Through the flexible control of three-way magnetic valve open and close, when solving exhaust-gas turbocharger supercharging sluggishness, the two-stage supercharging system further improves engine charge pressure, can realize the high pressure ratio of engine booster.Improve power and the emission performance of motor under whole working condition.
(2) waste gas of in the secondary exhaust-gas turbocharger, doing merit is further utilized in the auxiliary turbine one-level pressurized machine of electricity, charges a battery through generating, has made full use of exhaust energy, has effectively utilized fuel energy, has the important energy saving meaning.
(3) the auxiliary two-stage supercharging device of electricity of the present invention has the important engineering meaning, is the weary gas of doing merit owing to what utilize in the auxiliary turbine one-level pressurization system of electricity, and high-temp waste gas is after the overexpansion acting, and temperature reduces obvious.In one-level electricity auxiliary device, the high-temperature load of motor electronic circuit and permanent magnet is weakened greatly, the lubricating and cooling system design simplification, the machine operation reliability improves, and is easy to realization in the engineering.
(4) exhaust energy of the recycling of ability amplitude peak after the turbine acting.
(5) between engine system and air inlet electromagnetism threeway secondary valve, can also add intercooler,, improve density of the induced air, and then increase air inflow, improve engine power in order to further reduction Engine Inlet Temperature.
Description of drawings
Fig. 1 utilizes the auxiliary two-step supercharging system mechanics structural representation of electricity again for waste gas of the present invention.
Label declaration
1-one-level supercharger air compressor spiral case; 2-one-level pressure booster blower impeller; The 3-system inlet; The auxiliary turbine one-level pressurized machine of A-electricity; 4-two-stage supercharger compressor volute; 5-two-stage supercharger compressor impeller; 6-one-level super charge pipe; 7-air inlet electromagnetism threeway one step valve; 7A-air inlet electromagnetism threeway one step valve control end; B-exhaust gas turbine two-stage supercharger; The air inlet of 8-two-stage supercharging is responsible for; 9-two-stage supercharging air intake branch; 10-air inlet electromagnetism threeway secondary valve; 10A-air inlet electromagnetism threeway secondary valve control end; The 11-intercooler; 12-two-stage supercharging intake manifold; The C-engine system; 13-two-stage supercharging gas exhaust manifold; 14-exhaust electromagnetism threeway secondary valve; 14A-exhaust electromagnetism threeway secondary valve control end; 15-two-stage supercharger bypass valve; The exhaust of 16-two-stage supercharging is responsible for; 17-two-stage supercharging exhaust branch pipe; 18-exhaust electromagnetism threeway one step valve; 18A-exhaust electromagnetism threeway one step valve control end; 19-two-stage supercharger turbine; 20-two-stage supercharger turbine box; 21-two-stage supercharger rotor; 22-two-stage supercharger intermediate; 23-one-level supercharging outlet pipe; 24-one-level pressurized machine exhaust gas by-pass valve; 25-system exhaust road; 26-one-level booster turbine; 27-one-level booster turbine case; 28-one-level supercharger rotor; The 29-rotor; The 30-motor stator; 31-one-level pressurized machine intermediate; The M-electric system.
Embodiment
For objects and advantages of the present invention better are described, do further introduction below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, waste gas of the present invention utilizes the auxiliary two-step supercharging system of electricity to comprise like the bottom again:
1, the auxiliary turbine one-level pressurized machine A of electricity: comprise one-level supercharger air compressor spiral case 1, one-level pressure booster blower impeller 2, one-level booster turbine 26, one-level booster turbine case 27, one-level pressurized machine exhaust gas by-pass valve 24, one-level supercharger rotor 28, one-level pressurized machine intermediate 31, electric system M (rotor 29 and motor stator 30);
Wherein one-level supercharger air compressor spiral case 1 constitutes one-level supercharger air compressor end with one-level pressure booster blower impeller 2; One-level booster turbine 26 constitutes one-level booster turbine end with one-level booster turbine case 27, and its Placement is consistent with at present common turbocharger air compressor end and turbine end.Rotor 29 is installed on the neutral position of one-level supercharger rotor 28; One-level supercharger rotor 28 is positioned on the central axis of one-level pressurized machine intermediate 31, and its two axial ends connects one-level pressure booster blower impeller 2 and one-level charger turbine turbine 26 respectively; One-level pressurized machine intermediate 31 places outside the rotor 29, and two ends link to each other with one-level booster turbine case 27 with one-level supercharger air compressor spiral case 1 respectively; Motor stator 30 is to be installed on one-level pressurized machine intermediate 31 inwalls with rotor 29 relative directions; One-level pressurized machine exhaust gas by-pass valve 24 is installed on the one-level booster turbine case 27.
2, exhaust gas turbine two-stage supercharger B: comprise two-stage supercharger compressor volute 4, two-stage supercharger compressor impeller 5, two-stage supercharger turbine 19, two-stage supercharger turbine box 20, two-stage supercharger rotor 21, two-stage supercharger intermediate 22 and two-stage supercharger bypass valve 15; Its Placement is that two-stage supercharger compressor impeller 5 is installed in the two-stage supercharger compressor volute 4; Two-stage supercharger turbine 19 is installed in the two-stage supercharger turbine box 20; Two-stage supercharger compressor impeller 5 is formed two-stage supercharger rotor 21 with two-stage supercharger turbine 19; Two-stage supercharger rotor 21 is installed in the two-stage supercharger intermediate 22, and two-stage supercharger intermediate 22 is comprising between two-stage supercharger compressor volute 4 and the two-stage supercharger turbine box 20.
3, three-way solenoid valve system: comprise air inlet electromagnetism threeway one step valve 7 and control end 7A thereof, air inlet electromagnetism threeway secondary valve 10 and control end 10A thereof, exhaust electromagnetism threeway secondary valve 14 and control end 14A thereof, exhaust electromagnetism threeway one step valve 18 and control end 18A thereof;
4, intake and exhaust pipeline system: comprise system inlet 3, one-level supercharging outlet pipe 23, two-stage supercharging air intake branch 9, the two-stage supercharging air inlet person in charge 8, two-stage supercharging intake manifold 12, two-stage supercharging gas exhaust manifold 13, the two-stage supercharging exhaust person in charge 17, two-stage supercharging exhaust branch pipe 16, one-level super charge pipe 6 and system exhaust road 25:
5, pressurization control circuit: comprise A/D modular converter, direct current ac converter module, electromagnetic cross valve control module, frequency transformer control module, accumulation of energy control module, operating mode identification module and rectifier module;
6, engine system C.
Present embodiment has added intercooler 11 at engine system C and 10 of air inlet electromagnetism threeway secondary valves, in order to further reduction Engine Inlet Temperature, improves density of the induced air, and then increases air inflow, improves engine power.
System's suction tude 3 of present embodiment presses the end import to link to each other with the auxiliary turbine one-level pressurized machine of electricity; The one-level supercharger air compressor brings out mouth and is connected with one-level super charge pipe 6 one ends, and one-level super charge pipe 6 the other ends are connected 7 with air inlet electromagnetism threeway one step valve; The two ends in addition of electromagnetism threeway one step valve 7 are connected with the two-stage supercharging air inlet person in charge 8, two-stage supercharger gas compressor end suction port respectively; The two-stage supercharging air inlet person in charge 8 the other end is connected with air inlet electromagnetism threeway secondary valve 10, and the two ends in addition of air inlet electromagnetism threeway secondary valve 10 are connected with two-stage supercharging air intake branch 9, two-stage supercharging intake manifold 12 respectively; The other end of two-stage supercharging air intake branch 9 brings out mouth with the two-stage supercharger pressure and links to each other, and two-stage supercharging intake manifold 12 is connected with motor C suction port; One end of two-stage supercharging gas exhaust manifold 13 is connected with motor C relief opening, and the other end is connected with exhaust electromagnetism threeway secondary valve 14; The two ends in addition of exhaust electromagnetism threeway secondary valve 14 are responsible for 17 through the two-stage supercharging exhaust person in charge 17, two-stage supercharging exhaust and are connected the import of two-stage supercharger turbine end, exhaust electromagnetism threeway one step valve 18 respectively; The two ends in addition of exhaust electromagnetism threeway one step valve 18 are responsible for 17 with the outlet of two-stage supercharger turbine end, two-stage supercharging exhaust respectively and are connected; One-level supercharging outlet pipe 23 the other ends link to each other with the import of one-level booster turbine end; The one-level booster turbine brings out mouth and is connected with system exhaust road 25.
The accelerator pedal sensor of motor, engine rotation speed sensor output signal are passed to the operating mode identification module of pressurization control circuit; The output terminal of the electromagnetic cross valve control module of pressurization control circuit is connected with air inlet electromagnetism threeway one step valve control end 7A, air inlet electromagnetism threeway secondary valve control end 10A, exhaust electromagnetism threeway secondary valve control end 14A, exhaust electromagnetism threeway one step valve control end 18A respectively.
The auxiliary two-step supercharging system of the said electricity of present embodiment is different according to engine operating condition different operating mode, in conjunction with the real road situation of driving engine operating condition is divided into three kinds of forms: start operating mode, low speed full load and accelerating mode, high middling speed operating mode and other low speed operating modes.So use this auxiliary two-step supercharging system of cover electricity that motor is carried out air intake pressurized three cover embodiments are arranged.
Scheme one: make the auxiliary two-step supercharging device of electricity consumption under the engine start operating mode to the quick air inlet of motor.
Under this operating mode, what seek is the quick air inlet of motor, and it is sluggish to reduce supercharging.In order to make motor C air inlet effect best, make full use of the auxiliary fast-response of electricity, Ying Youdian assists the independent air feed of turbine one-level pressurized machine.
The working procedure of system is: 1. the direct current from vehicle battery becomes three-phase alternating current through direct current ac converter circuit conversion, flows through rotor 29, drives 28 rotations of one-level supercharger rotor by rotor 29 rotations; 2. compressor impeller 2 utilizes in system's air flue 3 gas to motor C air feed, and air-flow gets into air inlet electromagnetism threeways one step valve 7 through one-level super charge pipe 6; 3. electromagnetic cross valve control drives control end air inlet electromagnetism threeway one step valve control end 7A and air inlet electromagnetism threeway secondary valve control end 10A action; Close exhaust gas turbine two-stage supercharger inlet end and 8 outlet end are responsible in the two-stage supercharging air inlet, make air-flow be responsible for 8 and get into motor C through two-stage supercharging intake manifold 12 from the two-stage supercharging air inlet; 4. the exhaust flow of motor acting back generation gets into the two-stage supercharging exhaust and is responsible for 17 behind two-stage supercharging gas exhaust manifold 13; 5. electromagnetic cross valve control drives control end 14A and 18A action this moment is closed the turbine end outlet and the two-stage supercharging exhaust of exhaust gas turbine two-stage supercharger and is responsible for 17 entry ends; 6. waste gas gets into the turbine end of the auxiliary turbine one-level pressurized machine of electricity; Promote 26 actings of one-level charger turbine turbine, drive auxiliary turbine one-level supercharger rotor 28 rotations of electricity, one-level pressure booster blower impeller 2 compress inlet air; Form circulation, saved the energy that electric system M consumes simultaneously.
Scheme two: low engine speed full load and accelerating mode make the auxiliary two-step supercharging device of electricity consumption to engine charge, strengthen air inflow.
Have under this operating mode that engine acceleration is poor, low-speed performance worsens, air inlet is not enough, it is undesirable burn, discharges the problem of power character difference.In order to increase air inflow, the ability to work that makes full use of electric system M is to engine system C tonifying Qi, two-stage supercharger series operation.
The working procedure of system is: after 1. becoming three-phase alternating current through direct current ac converter circuit conversion, flow through motor stator 30 from the direct current of vehicle battery, and 29 rotations of electromagnetic force drive motor rotor, thus drive 28 rotations of one-level supercharger rotor; 2. in the one-level pressure booster blower impeller 2 compression system intake ducts 3 gas to motor C air feed.Air-flow gets into air inlet electromagnetism threeway one step valve 7 through one-level super charge pipe 6; 3. electromagnetic cross valve control drives control end air inlet electromagnetism threeway one step valve control end 7A and air inlet electromagnetism threeway secondary valve control end 10A action is opened exhaust gas turbine two-stage supercharger inlet end and two-stage supercharging air inlet and is responsible for 8 outlet end; 4. air-flow compresses after two-stage supercharging intake manifold 12 gets into engine system C through two-stage supercharger compressor impeller 5.The exhaust flow that motor acting back produces gets into two-stage supercharging exhaust branch pipe 16 behind two-stage supercharging gas exhaust manifold 13; 5. outlet of exhaust gas turbine two-stage supercharger turbine end and two-stage supercharging exhaust branch pipe 16 entry ends are opened in electromagnetic cross valve control drives control end exhaust electromagnetism threeway secondary valve 14A and exhaust electromagnetism threeway one step valve control end 18A action this moment; 6. waste gas gets into the acting of exhaust gas turbine two-stage supercharger, promotes 19 rotations of two-stage supercharger turbine, drives 5 pairs of air inlet actings of two-stage supercharger compressor impeller; 7. the turbine end that the low temperature waste gas after the acting gets into the auxiliary turbine one-level pressurized machine of electricity through one-level supercharging outlet pipe 23 in two-stage supercharger turbine 19; Promote 26 actings of one-level charger turbine turbine; The same one-level supercharger rotor 28 that drives rotates; One-level pressure booster blower impeller 2 compress inlet air form circulation, have also saved the energy that electric system M consumes simultaneously.
Scheme three: motor high speed operating mode and other low speed operating modes make the auxiliary two-step supercharging device of electricity consumption to engine charge, utilize electric system M power-generation energy-storage.
Make full use of the advantage of two-step supercharging under this operating mode, widen engine power ranges, realize that supercharging intensity improves and energy-conservation generating.
The electromagnetic cross valve control circuit is identical to the implementation and the scheme two of four electromagnetic cross valve control ends in this programme, and inlet flow path and exhaust circulation path and scheme are also identical.
Claims (3)
1. waste gas utilizes the auxiliary two-step supercharging system of electricity again, it is characterized in that: comprise the auxiliary turbine one-level pressurized machine of electricity, exhaust gas turbine two-stage supercharger, three-way solenoid valve system, intake and exhaust pipeline system, pressurization control circuit and engine system;
The auxiliary turbine one-level pressurized machine of described electricity comprises one-level supercharger air compressor spiral case, one-level pressure booster blower impeller, one-level booster turbine, one-level booster turbine case, one-level pressurized machine exhaust gas by-pass valve, one-level supercharger rotor, one-level pressurized machine intermediate, electric system; Wherein, electric system is made up of rotor and motor stator;
One-level supercharger air compressor spiral case and one-level pressure booster blower impeller constitute one-level supercharger air compressor end; One-level booster turbine and one-level booster turbine case constitute one-level booster turbine end, and its Placement is consistent with at present common turbocharger air compressor end and turbine end; Rotor is installed on the neutral position of one-level supercharger rotor; The one-level supercharger rotor is positioned on the central axis of one-level pressurized machine intermediate, and its two axial ends connects one-level pressure booster blower impeller and one-level charger turbine turbine respectively; One-level pressurized machine intermediate places outside the rotor, and two ends link to each other with one-level booster turbine case with one-level supercharger air compressor spiral case respectively; Motor stator is installed on the one-level pressurized machine intermediate inwall with the direction relative with rotor; One-level pressurized machine exhaust gas by-pass valve is installed on the one-level booster turbine case;
Said exhaust gas turbine two-stage supercharger comprises two-stage supercharger compressor volute, two-stage supercharger compressor impeller, two-stage supercharger turbine, two-stage supercharger turbine box, two-stage supercharger rotor, two-stage supercharger intermediate and two-stage supercharger bypass valve;
Connection between two-stage supercharger compressor volute, two-stage supercharger compressor impeller, two-stage supercharger turbine, two-stage supercharger turbine box, two-stage supercharger rotor, two-stage supercharger intermediate and the two-stage supercharger bypass valve is consistent with the Placement of current typical turbosupercharger;
Described three-way solenoid valve system comprises air inlet electromagnetism threeway one step valve and control end, air inlet electromagnetism threeway secondary valve and control end thereof, exhaust electromagnetism threeway secondary valve and control end thereof, exhaust electromagnetism threeway one step valve and control end thereof;
Described intake and exhaust pipeline system comprises system inlet, one-level supercharging outlet pipe, two-stage supercharging air intake branch, the two-stage supercharging air inlet person in charge, two-stage supercharging intake manifold, two-stage supercharging gas exhaust manifold, the two-stage supercharging exhaust person in charge, two-stage supercharging exhaust branch pipe, one-level super charge pipe and system exhaust road;
Described pressurization control circuit comprises A/D modular converter, direct current ac converter module, electromagnetic cross valve control module, frequency transformer control module, accumulation of energy control module, operating mode identification module and rectifier module;
Described engine system is common motor;
System's suction tude links to each other with the auxiliary turbine one-level supercharger air compressor end import of electricity; The auxiliary turbine one-level supercharger air compressor of electricity brings out mouth and is connected with an end of one-level supercharging outlet pipe, and the one-level supercharging outlet pipe the other end is connected with air inlet electromagnetism threeway one step valve; The two ends in addition of electromagnetism threeway one step valve are connected with two-stage supercharging air intake branch, two-stage supercharger gas compressor end suction port respectively; The other end of two-stage supercharging air intake branch is connected with air inlet electromagnetism threeway secondary valve, and the two ends in addition of air inlet electromagnetism threeway secondary valve are responsible for two-stage supercharging intake manifold, two-stage supercharging air inlet respectively and are connected; The other end that the two-stage supercharging air inlet is responsible for brings out mouth with the two-stage supercharger pressure and links to each other, and the two-stage supercharging intake manifold is connected with the engine system suction port; One end of two-stage supercharging gas exhaust manifold is connected with engine exhaust port, and the other end and exhaust electromagnetism threeway secondary valve connect; The two ends in addition of exhaust electromagnetism threeway secondary valve connect the import of two-stage supercharger turbine end, exhaust electromagnetism threeway one step valve respectively through the two-stage supercharging exhaust person in charge, two-stage supercharging exhaust branch pipe; The two ends in addition of exhaust electromagnetism threeway one step valve are connected with the outlet of two-stage supercharger turbine end, one-level pressurized machine suction tude respectively; The one-level super charge pipe the other end links to each other with the import of one-level booster turbine end; The one-level booster turbine brings out mouth and is connected with the system exhaust road;
The accelerator pedal sensor of motor, engine rotation speed sensor output signal are passed to the operating mode identification module of pressurization control circuit; The output terminal of the electromagnetic cross valve control module of pressurization control circuit is connected with air inlet electromagnetism threeway one step valve control end, air inlet electromagnetism threeway secondary valve control end, exhaust electromagnetism threeway secondary valve control end, exhaust electromagnetism threeway one step valve control end respectively; The motor storage battery is that pressurization control circuit and motor provide electric power; Pressurization control circuit control module output terminal is connected with electric system.
2. waste gas according to claim 1 utilizes the auxiliary two-step supercharging system of electricity again, it is characterized in that: the electric system of the auxiliary turbine one-level pressurized machine of said electricity can also can be as engine system as motor.
3. waste gas according to claim 1 utilizes the auxiliary two-step supercharging system of electricity again, it is characterized in that: for further improving engine power, between said engine system and air inlet electromagnetism threeway secondary valve, add intercooler.
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