CN203532106U - Pure oxygen engine - Google Patents

Pure oxygen engine Download PDF

Info

Publication number
CN203532106U
CN203532106U CN201320747381.0U CN201320747381U CN203532106U CN 203532106 U CN203532106 U CN 203532106U CN 201320747381 U CN201320747381 U CN 201320747381U CN 203532106 U CN203532106 U CN 203532106U
Authority
CN
China
Prior art keywords
egr
intake manifold
motor
pure oxygen
oxygen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320747381.0U
Other languages
Chinese (zh)
Inventor
田维
韩志强
吴学舜
邓猛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xihua University
Original Assignee
Xihua University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xihua University filed Critical Xihua University
Priority to CN201320747381.0U priority Critical patent/CN203532106U/en
Application granted granted Critical
Publication of CN203532106U publication Critical patent/CN203532106U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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

Landscapes

  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The utility model discloses a pure oxygen engine. An intake header pipe is connected with four cylinders through intake manifolds, wherein one cylinder is connected with an exhaust pipe, and an exhaust back pressure sensor, an exhaust back pressure control valve and an oxygen concentration sensor are arranged on the exhaust pipe; other three cylinders are connected with an intercooler through an EGR (exhaust gas recirculation) system intake header pipe, an oxygen outlet of the intercooler is connected with the intake header pipe, a pressure sensor is arranged on the EGR system intake header pipe connected with the rear end of the exhaust pipe through a decompression pipe; a decompression valve is arranged on the decompression pipe; and a pressure sensor, a temperature sensor and a pure oxygen inlet are arranged on the intake header pipe. The pure oxygen engine adopts pure oxygen fuel and 75% of EGR mixture, so that the effects of saving energy, reducing emission and improving thermal efficiency and power of the engine are realized.

Description

A kind of pure oxygen motor
Technical field
The utility model belongs to field of internal combustion engine, particularly a kind of piston type pure oxygen motor.
Background technique
In recent years, environmental problem has been subjected to country and the numerous common people's attention.And the exhaust emissions of automobile has been pulled to foreground under the background of this heavily contaminated, stricter Abgasgesetz has all been released in countries in the world.Especially in China, not only released stricter Abgasgesetz, also implemented simultaneously limiting emission not the measures such as operation area of vehicle up to standard alleviate serious municipal pollution.In order to reduce the discharge of motor car engine, the researcher of motor has adopted a series of measure, as charge inter cooling technology, EGR technology, high-pressure injection technology, electron controls technology etc.These technology to a certain degree alleviated discharge quagmire, but still there is many technical barriers in the emission problem that wants fundamentally to solve motor.The discharge of motor car engine (comprising diesel engine and petrol engine) mainly contains NOx, PM, HC, CO.Especially the PM of diesel engine and GDI petrol engine discharge is very large on the particulate matter impact in the middle of air.In the middle of these all effulents, three kinds of effulents of NOx and other are the Changing Pattern that is contrary substantially, i.e. NOx Reducing exhaust emission, and other three kinds of effulents or wherein one or both are the trend of increase.Therefore want to reduce the discharge amount of all effulents, its difficulty is very large.
Existing research shows, NOx is mainly due to the N in the middle of air 2with the O in the middle of air 2generation oxidation reaction generates.If can be the N in the middle of air 2all remove, in the middle of the effulent of motor, do not have the generation of NOx, proposed thus the concept of pure oxygen motor.If motor only enters oxygen, but also carry out stoichiometric proportion burning, will inevitably there is the anomalies such as overheated in motor so; If not according to stoichiometric proportion burning, must cause the waste of oxygen, and the acquisition of pure oxygen need to be paid a price.Therefore, motor when entering pure oxygen, must add other not with the gas of oxygen and fuel reaction.CO 2just in time meet such requirement, and obtain CO 2be very easy to, burning resultant is later CO 2.Although burning exhaust is later central except CO 2also has H 2o, but H at high temperature 2o is gaseous state, and also not with oxygen and fuel reaction, therefore in the middle of can directly the exhaust of motor being incorporated into air inlet, mix with purity oxygen, formed gaseous mixture is as the working medium of motor, and then the fuel that sprays into corresponding proportion can carry out work by combustion.
Model utility content
The purpose of this utility model is to provide a kind of pure oxygen motor, adopts the mixed admission of pure oxygen fuel and 75% EGR, thereby realizes the energy-saving and emission-reduction of motor.
The purpose of this utility model is achieved in that a kind of pure oxygen motor, comprise that intake manifold is connected with the suction port of four cylinders through intake manifold respectively, the relief opening of a cylinder in described four cylinders connects outlet pipe, on outlet pipe, along discharge directions, is provided with in turn exhaust back pressure sensor, exhaust back pressure control valve and oxygen concentration sensor; The relief opening of its excess-three cylinder in described four cylinders is connected with the suction port of EGR intercooler through egr system intake manifold, and the air outlet of EGR intercooler is connected with intake manifold through EGR pipe, is provided with EGR pressure transducer on egr system intake manifold; On described intake manifold, be provided with pure oxygen suction port, intake manifold is provided with pressure transducer and temperature transducer; Above-mentioned egr system intake manifold is partly connected with the outlet pipe that is positioned at oxygen concentration sensor downstream through relief tube, and EGR Decompression valves is installed on this relief tube.
The signal of described pressure transducer, temperature transducer and exhaust back pressure sensor and oxygen concentration sensor exports described ECU to, and the control signal of above-mentioned ECU exports exhaust back pressure control valve and EGR Decompression valves to.
On the inlet tube of the cooling medium of described EGR intercooler, be provided with cooling medium control valve, the control signal of described ECU exports cooling medium control valve to.
The inlet and exhaust system structure of the utility model piston type pure oxygen motor and the burning control program of motor.It can realize the mixed admission of 75% EGR (EGR) and pure oxygen, and under the help of electronic control system, make motor operate under weak mixture, stoichiometric proportion mixed gas, rich mixture state and carry out work by combustion according to the requirement of operating mode, thereby realize motor energy-conservation, reduce discharging, improve the thermal efficiency and improve the object of engine power.
The utility model piston type pure oxygen motor, includes four cylinder engine (can be also the multicylinder engine of other quantity), pure oxygen gas handling system, engine aspirating system, engine exhaust system, gas recirculation system (egr system) and electronic control system (ECU).
The gas handling system of motor includes intake manifold and intake manifold, and intake manifold one end is connected with cylinder, and the other end is connected with intake manifold.Intake manifold is also connected with pure oxygen gas handling system with egr system, and temperature transducer and pressure transducer are also installed above intake manifold, and the signal of temperature transducer and pressure transducer directly sends electronic control system (ECU) to.
The vent systems of motor includes outlet pipe, a pressure transducer, back pressure control valve and oxygen concentration sensor are installed above outlet pipe, the signal of temperature transducer and oxygen concentration sensor directly sends ECU to, and back pressure control valve is accepted the control signal from ECU.One end of outlet pipe is connected with a wherein cylinder of motor, and the other end directly leads to atmosphere.
Egr system includes egr system intake manifold, EGR pressure transducer, EGR intercooler and EGR Decompression valves.Egr system intake manifold one end in egr system is connected with other three cylinders of motor, and the other end is connected with the intake manifold of motor through EGR intercooler.Intercooler and EGR Decompression valves are accepted the signal from ECU.
Feature of the present utility model and beneficial effect are:
1,3 in the middle of 4 outlet pipes are directly connected with intake manifold, the EGR realizing thus up to 75% leads.
2,3 in the middle of 4 outlet pipes are directly connected with intake manifold, pressure in intake manifold can approach 75% of outlet pipe pressure, atmospheric pressure is equivalent to carry out supercharging relatively, therefore do not need additionally to install pressurized machine, simplified structure, cost-saving thus, and can improve the thermal efficiency of motor.
3,3 in the middle of 4 outlet pipes are directly connected with intake manifold, 75% exhaust enters in cylinder and again participates in burning, THC, CO in the middle of exhaust, PM etc. do not have the product of perfect combustion again to burn and release heat, reach fuel saving, reduce the object of discharging.
4,3 in the middle of 4 outlet pipes are directly connected with intake manifold, and purity oxygen directly enters intake manifold by air supply system, and the air inlet under each steady working condition, exhaust gas total mole number balance, therefore without tolerance such as closures, regulate parts, mechanism and pumping loss have been simplified, reduce the cost of motor, improved the efficiency of motor.
5,3 in the middle of 4 outlet pipes are directly connected with intake manifold, the actual central tail gas of air that enters is only 25% of common engine, can significantly reduce the total release of motor; The actual central using waste heat from tail gas of air that enters also significantly reduces, and in the middle of the waste heat that EGR retains, in having heated air inlet, heat is recycled, and improves the thermal efficiency of motor.
6, in the middle of whole combustion process all without N 2participation, therefore can thoroughly solve the emission problem of NOx; The combustion temperature of motor be can suitably improve on this basis, THC, CO, PM discharge reduced.
7, the combustion scheme that the utility model provides under each steady working condition, under accelerating mode and the purity oxygen mol ratio under decelerating mode all in 20.3% left and right, approach with the oxygen content mol ratio in the middle of air, so pure oxygen motor can be realized stable combustion process.
8, vent systems is provided with exhaust back pressure controlling device, and the coefficient of residual gas that can guarantee directly to arrange in the cylinder of atmosphere equates with other 3 cylinders.
9, egr system is provided with Decompression valves, anxious accelerate and anxious decelerating mode under by regulating the amount of EGR to come oxygen mol ratio in control engine cylinder and the gas gross in cylinder, guarantee that engine reliable moves.
10, the utility model is all applicable for take the spark-ignition engine that the compression ignition engine that diesel engine is representative and the petrol engine of take be representative.
Accompanying drawing explanation
Fig. 1 is the arrangement of mechanism figure of the utility model pure oxygen motor.
Fig. 2 is the working principle skeleton diagram of the utility model pure oxygen motor.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In Fig. 1, (motor) intake manifold 1, (motor) intake manifold 2, cylinder 3, gas exhaust manifold 4, exhaust back pressure sensor 5, outlet pipe 6, egr system intake manifold 7, EGR pressure transducer 8, exhaust back pressure control valve 9, oxygen concentration sensor 10, EGR Decompression valves 11, EGR intercooler 12, EGR pipe 13, (intake manifold) temperature transducer 14, (intake manifold) pressure transducer 15 and pure oxygen suction port 16;
Fig. 1 illustrates a kind of pure oxygen motor, comprise, intake manifold 1 is connected with the suction port of four cylinders 3 through intake manifold 2 respectively, it is characterized in that, the relief opening of a cylinder in described four cylinders 3 connects outlet pipe 6, on outlet pipe 6, along discharge directions, is provided with in turn exhaust back pressure sensor 5, exhaust back pressure control valve 9 and oxygen concentration sensor 10; The relief opening of its excess-three cylinder in described four cylinders 3 is connected with the suction port of EGR intercooler 12 through egr system intake manifold 7, the air outlet of EGR intercooler 12 is connected with intake manifold 1 through EGR pipe 13, is provided with EGR pressure transducer 8 on egr system intake manifold 7; On described intake manifold 1, be provided with pure oxygen suction port 16, intake manifold 1 is provided with pressure transducer 15 and temperature transducer 14; Above-mentioned egr system intake manifold 7 is connected with outlet pipe 6 parts that are positioned at oxygen concentration sensor 10 downstreams through relief tube, and EGR Decompression valves 11 is installed on this relief tube.
The signal of described pressure transducer 15, temperature transducer 14 and exhaust back pressure sensor 5 and oxygen concentration sensor 10 exports described ECU to, and the control signal of above-mentioned ECU exports exhaust back pressure control valve 9 and EGR Decompression valves 11 to.
On the inlet tube of the cooling medium of described EGR intercooler 12, be provided with cooling medium control valve, the control signal of described ECU exports cooling medium control valve to.
(motor) intake manifold 1 is connected with intake manifold 2, pure oxygen suction port 16 and EGR pipe 13, and (intake manifold) temperature transducer 14 and (intake manifold) pressure transducer 15 are installed on engine intake manifold;
Intake manifold 2 also connects one to one with (motor) four cylinders 3 except being connected with (motor) intake manifold 1;
A wherein cylinder of four (motor) cylinders 3 is connected with one end of gas exhaust manifold 4, and its excess-three cylinder is connected with egr system intake manifold 7;
Gas exhaust manifold 4 the other ends are connected with one end of outlet pipe 6, and gas exhaust manifold 4 is provided with exhaust back pressure sensor 5 above;
The other end of outlet pipe 6 directly enters atmosphere, and exhaust back pressure control valve 9 and oxygen concentration sensor 10 are installed on outlet pipe 6;
EGR pressure transducer 8 is installed on egr system intake manifold 7, egr system intake manifold 7 one end are connected with its excess-three (motor) cylinder 3, the other end is connected with outlet pipe 6 by EGR Decompression valves 11 on the one hand, link position is positioned at the downstream of exhaust back pressure control valve 9 and oxygen concentration sensor 10, on the other hand with EGR intercooler 12(adopt tubular heat exchanger or plate type heat exchanger etc. all can) be connected;
EGR intercooler 12 the other ends are managed 13 by EGR and are connected with intake manifold.
In Fig. 1, EGR intercooler " into and out of " being expressed as import and the outlet of cooling medium, cooling medium can be walked in the pipe of tubular heat exchanger, and the EGR gas being cooled is walked pipe outer (between pipe).
The pressure signal of exhaust back pressure sensor 5 is directly passed to ECU, the signal of EGR pressure transducer 8 is directly passed to ECU, ECU is by the contrast pressure signal of exhaust back pressure sensor 5 and the signal of EGR pressure transducer 8 and then control exhaust back pressure control valve 9, guarantees that in four cylinders of (motor) cylinder 3, the coefficient of residual gas in each cylinder equates.
Oxygen concentration sensor 10 is for judging the state of engine mixed gas.
EGR Decompression valves 11 is according to the unblanking of ECU or close the control of realization to EGR tolerance.
EGR intercooler 12, according to the operating mode of motor, receives the temperature from the SC sigmal control EGR gas of ECU, prevents engine overheat.
(intake manifold) temperature transducer 14 and (intake manifold) pressure transducer 15 signals are directly passed to ECU, as judgement with control on the inlet tube of cooling medium of EGR intercooler 12(EGR intercooler 12 and be provided with cooling medium control valve, the control signal of ECU exports cooling medium control valve to) and EGR Decompression valves and exhaust back pressure control valve (pressure transducer 15, the signal of temperature transducer 14 and exhaust back pressure sensor 5 and oxygen concentration sensor 10 exports ECU to, the control signal of ECU exports exhaust back pressure control valve 9 and EGR Decompression valves 11 to) foundation.
Pure oxygen motor of the present utility model is to carry out work according to following principle:
The 4 Cylinder engines wherein waste gas of a cylinder are directly discharged motor and are entered atmosphere environment, and its exhaust back pressure is controlled by back pressure control valve and is consistent with the exhaust pressure (being the pressure in egr system intake manifold) of its excess-three cylinder.All gas in its excess-three cylinder enters engine intake manifold after via egr system intake manifold and EGR intercooler, and the gas temperature after cold in EGR is controlled according to the pressure and temperature in intake manifold, in H in the middle of EGR gas after cold 2o remains dry steam state.Pure oxygen directly enters into intake manifold through the pure oxygen import on intake manifold to be mixed with EGR gas, mixed gas enters into engine interior via intake manifold, and the air inflow of pure oxygen is controlled according to operating mode and the oxygen concentration sensor that is arranged on outlet pipe by ECU.Amount of fuel is controlled according to the air inflow of pure oxygen and operating mode.
According to the operating mode of internal-combustion piston engine and corresponding mixed gas state, the combustion mode of pure oxygen motor is divided into stoichiometric proportion combustion mode, lean combustion pattern and rich mixture combustion mode.Each combustion mode is distinguished by engine operation condition again, included steady state condition, accelerating mode and decelerating mode, therefore obtained altogether the combustion mode under 9 kinds of different operating modes, concrete combustion mode is carried out according to following process:
1, by stoichiometric proportion combustion mode
Chemical formula under steady state condition:
Figure BDA0000420186560000061
Wherein,
CO 2+ 0.9H 2o is the EGR gas flow that enters cylinder;
Figure BDA0000420186560000062
for entering the pure oxygen tolerance of cylinder;
for entering the fuel quantity of cylinder, CH 1.8molecular formula of equal value for fuel;
Figure BDA0000420186560000064
for formed whole products after burning.
Under steady state condition, by total exhaust
Figure BDA0000420186560000065
all introducing suction tude has:
Figure BDA0000420186560000066
eGR gas flow CO with the chemical formula left side 2+ 0.9H 2o equates, so the working procedure of motor is balance on gas; In addition, added purity oxygen and the fuel quantity that enters also can perfect combustions, so motor can be stablized continuous running.
Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is 20.3%.
Accelerate chemical formula under (deceleration) operating mode:
Figure BDA0000420186560000067
Wherein,
CO 2+ 0.9H 2o is the EGR gas flow that enters cylinder;
Figure BDA0000420186560000071
for entering the pure oxygen tolerance of cylinder;
Figure BDA0000420186560000072
for entering the fuel quantity of cylinder, CH 1.8molecular formula of equal value for fuel;
for formed whole products after burning.
Accelerating under (deceleration) operating mode, by total exhaust
Figure BDA0000420186560000074
all introducing suction tude has:
When x > 0,
Figure BDA0000420186560000075
be greater than the EGR gas flow CO on the former chemical formula left side 2+ 0.9H 2o, so the increase of the amount of the working medium in next cycle engine cylinder, simultaneously owing to having increased the fuel x (1.45O of pure oxygen air inflow and corresponding amount 2+ CH 1.8), on motor, the balance of a work cycle is broken, and acting ability increases, so motor can accelerate.After accelerating to rotating speed of target, make x=0, motor comes back to steady-working state.Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is greater than 20.3%.
When x < 0,
Figure BDA0000420186560000076
be less than the EGR gas flow CO on the former chemical formula left side 2+ 0.9H 2o, so the amount of the working medium in next cycle engine cylinder reduces, simultaneously owing to having reduced the fuel x (1.45O of pure oxygen air inflow and corresponding amount 2+ CH 1.8), on motor, the balance of a work cycle is broken, and acting ability weakens, so motor can slow down.After decelerating to rotating speed of target, make x=0, motor comes back to steady-working state.Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is less than 20.3%.
2, press lean combustion pattern (the excessive combustion mode of oxygen)
Chemical formula under steady state condition:
Figure BDA0000420186560000077
Wherein,
Definition, the actual oxygen surplus capacity coefficient that α is each work cycle, the coefficient of the oxygen additionally adding;
Definition, target oxygen excess coefficient
Figure BDA0000420186560000078
Have: &alpha; = 1 4 &phi; &alpha;
CO 2+ 0.9H 2o is the EGR gas flow that enters cylinder;
Figure BDA0000420186560000081
for entering the pure oxygen tolerance of cylinder;
Figure BDA0000420186560000082
for entering the fuel quantity of cylinder, CH 1.8molecular formula of equal value for fuel;
Figure BDA0000420186560000083
for formed whole products, in fact α O after burning 2and have neither part nor lot in reaction.
Under steady state condition, by total exhaust
Figure BDA0000420186560000084
all introducing suction tude has:
Figure BDA0000420186560000085
be greater than the EGR gas flow CO on the chemical formula left side 2+ 0.9H 2o, after a plurality of circulations, total exhaust will reach
Figure BDA0000420186560000086
eGR total amount reaches
Figure BDA0000420186560000087
the gas working medium of motor reaches new balance, that is:
Figure BDA0000420186560000088
Wherein, &alpha; = 1 4 &phi; &alpha; .
So the working procedure of motor just can reach balance on gas; In addition, added purity oxygen can guarantee that entered fuel quantity also can perfect combustion, and the heat that each circulating fuel discharges is identical, and its acting ability is stable, so motor can be stablized continuous running.
Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is greater than 20.3%; The relative fuel of oxygen is superfluous, belongs to lean combustion pattern.
Accelerate chemical formula under (deceleration) operating mode:
Figure BDA00004201865600000810
Wherein, &alpha; = 1 4 &phi; &alpha; .
Accelerating under (deceleration) operating mode, by total exhaust
Figure BDA00004201865600000812
all introducing suction tude has:
When x > 0,
Figure BDA0000420186560000091
be greater than the EGR gas flow on the former chemical formula left side
Figure BDA0000420186560000092
therefore the amount of the working medium in next cycle engine cylinder increases, simultaneously owing to having increased the fuel x (1.45O of pure oxygen air inflow and corresponding amount 2+ CH 1.8), on motor, the balance of a work cycle is broken, and acting ability increases, so motor can accelerate.After accelerating to rotating speed of target, make x=0, motor comes back to steady-working state.Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is greater than 20.3%; The relative fuel of amount of oxygen is superfluous, belongs to lean combustion.
When x < 0,
Figure BDA0000420186560000093
be less than the EGR gas flow on the former chemical formula left side therefore the amount of the working medium in next cycle engine cylinder reduces, simultaneously owing to having reduced the fuel x (1.45O of pure oxygen air inflow and corresponding amount 2+ CH 1.8), on motor, the balance of a work cycle is broken, and acting ability weakens, so motor can slow down.After decelerating to rotating speed of target, make x=0, motor comes back to steady-working state.Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is greater than 20.3%; The relative fuel of amount of oxygen is superfluous, belongs to lean combustion.
3, press rich mixture combustion mode:
Chemical formula under steady state condition:
Figure BDA0000420186560000095
Wherein,
Definition, the fuel rich surplus coefficient that β is each work cycle, each relative purity oxygen that circulates actual add into fuel quantity coefficient;
Definition, target oxygen excess coefficient
Figure BDA0000420186560000096
Have: &beta; = - &phi; &beta; 3 ( 1 + &phi; &beta; )
CO 2+ 0.9H 2o is the EGR gas flow that enters cylinder;
Figure BDA0000420186560000098
for entering the pure oxygen tolerance of cylinder;
Figure BDA0000420186560000101
for entering the fuel quantity of cylinder, CH 1.8molecular formula of equal value for fuel;
Figure BDA0000420186560000102
for formed whole products after burning, β CH 1.8(G) steam at high temperature forming for fuel.
Under steady state condition, by total exhaust all introducing suction tude has:
be greater than the EGR gas flow CO on the chemical formula left side 2+ 0.9H 2o.After a plurality of circulations, chemical formula will reach new balance,
Now, the ratio of fuel vapor is very little, and to have part of fuel be liquid, so the working procedure of motor is approximate equilibrium on gas; In addition, added purity oxygen participates in reaction completely, and the heat discharging is identical with acting ability, so motor can be stablized continuous running.
Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is less than 20.3%, and fuel is superfluous, belongs to overrich burning.
Accelerate chemical formula under (deceleration) operating mode:
Figure BDA0000420186560000106
Wherein, &beta; = - &phi; &beta; 3 ( 1 + &phi; &beta; ) .
Accelerating under (deceleration) operating mode, by total exhaust
Figure BDA0000420186560000108
all introducing suction tude has:
When x > 0,
Figure BDA0000420186560000109
be greater than the EGR gas flow on the former chemical formula left side therefore the amount of the working medium in next cycle engine cylinder increases, simultaneously owing to having increased the fuel x (1.45O of pure oxygen air inflow and corresponding amount 2+ CH 1.8), on motor, the balance of a work cycle is broken, and acting ability increases, so motor can accelerate.After accelerating to rotating speed of target, make x=0, motor comes back to steady-working state.Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is greater than 20.3%; The relative fuel shortage of amount of oxygen, belongs to Over-rich mixture combustion mode.
When x < 0,
Figure BDA0000420186560000112
be less than the EGR gas flow on the former chemical formula left side
Figure BDA0000420186560000113
therefore the amount of the working medium in next cycle engine cylinder reduces, simultaneously owing to having reduced the fuel x (1.45O of pure oxygen air inflow and corresponding amount 2+ CH 1.8), on motor, the balance of a work cycle is broken, and acting ability weakens, so motor can slow down.After decelerating to rotating speed of target, make x=0, motor comes back to steady-working state.Under this state, the molar percentage value that purity oxygen accounts for whole air inlets is less than 20.3%; The relative fuel shortage of amount of oxygen, belongs to Over-rich mixture combustion mode.
Anxious acceleration, anxious decelerating mode:
For anxious accelerating mode, by regulating the aperture of EGR Decompression valves to adjust the gas flow of EGR, control thus the molar ratio of purity oxygen in mixed gas, motor is steadily accelerated.
For anxious decelerating mode, by regulating the aperture of EGR Decompression valves to adjust the gas flow of EGR, control thus rare limit of mixed gas, keep motor steadily to slow down.
" coefficient of residual gas " is internal-combustion engine professional term, on any Principles of Internal-Combustion Engine book, all has definition.

Claims (3)

1. a pure oxygen motor, comprise, intake manifold (1) is connected with the suction port of four cylinders (3) through intake manifold (2) respectively, it is characterized in that, the relief opening of a cylinder in described four cylinders (3) connects outlet pipe (6), and outlet pipe (6) is upper is provided with exhaust back pressure sensor (5), exhaust back pressure control valve (9) and oxygen concentration sensor (10) in turn along discharge directions; The relief opening of its excess-three cylinder in described four cylinders (3) is connected with the suction port of EGR intercooler (12) through egr system intake manifold (7), the air outlet of EGR intercooler (12) is connected with intake manifold (1) through EGR pipe (13), is provided with EGR pressure transducer (8) on egr system intake manifold (7); On described intake manifold (1), be provided with pure oxygen suction port (16), intake manifold (1) is provided with pressure transducer (15) and temperature transducer (14); Above-mentioned egr system intake manifold (7) is connected with outlet pipe (6) part that is positioned at oxygen concentration sensor (10) downstream through relief tube, and EGR Decompression valves (11) is installed on this relief tube.
2. a kind of pure oxygen motor according to claim 1, is characterized in that also having ECU; The signal of described pressure transducer (15), temperature transducer (14) and exhaust back pressure sensor (5) and oxygen concentration sensor (10) exports described ECU to, and the control signal of above-mentioned ECU exports exhaust back pressure control valve (9) and EGR Decompression valves (11) to.
3. a kind of pure oxygen motor according to claim 2, is characterized in that, on the inlet tube of the cooling medium of described EGR intercooler (12), is provided with cooling medium control valve, and the control signal of described ECU exports cooling medium control valve to.
CN201320747381.0U 2013-11-22 2013-11-22 Pure oxygen engine Expired - Fee Related CN203532106U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320747381.0U CN203532106U (en) 2013-11-22 2013-11-22 Pure oxygen engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320747381.0U CN203532106U (en) 2013-11-22 2013-11-22 Pure oxygen engine

Publications (1)

Publication Number Publication Date
CN203532106U true CN203532106U (en) 2014-04-09

Family

ID=50418321

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320747381.0U Expired - Fee Related CN203532106U (en) 2013-11-22 2013-11-22 Pure oxygen engine

Country Status (1)

Country Link
CN (1) CN203532106U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573480A (en) * 2013-11-22 2014-02-12 西华大学 Pure oxygen engine and combustion control method for pure oxygen engine
CN110998081A (en) * 2017-07-24 2020-04-10 斗山英维高株式会社 Exhaust gas recirculation system of engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573480A (en) * 2013-11-22 2014-02-12 西华大学 Pure oxygen engine and combustion control method for pure oxygen engine
CN103573480B (en) * 2013-11-22 2016-06-08 西华大学 A kind of pure oxygen electromotor and method for controlling combustion thereof
CN110998081A (en) * 2017-07-24 2020-04-10 斗山英维高株式会社 Exhaust gas recirculation system of engine
CN110998081B (en) * 2017-07-24 2022-03-08 斗山英维高株式会社 Exhaust gas recirculation system of engine

Similar Documents

Publication Publication Date Title
CN103573480B (en) A kind of pure oxygen electromotor and method for controlling combustion thereof
US9194307B2 (en) Multi-fuel flow systems and methods with dedicated exhaust gas recirculation
CN103670759B (en) Spark-ignition direct injection engine
EP2557300B1 (en) Combustion control device for an internal combustion engine
CN101046176B (en) Dual combustion mode engine
CN105715367B (en) Based on can variable gas channel double fuel ignition internal combustion engine and control method
EP2923063A1 (en) Internally cooled exhaust gas recirculation system for internal combustion engine and method thereof
CN109736935A (en) Using purity oxygen as the control method of the nitrogen discharged engine of HC fuel spark ignition type zero of oxidant
CN105257372B (en) A kind of polyoxy engine and its application method
US20100228466A1 (en) Internal combustion engine operational systems and meth0ds
CN216142827U (en) Equivalent combustion engine air flue structure
CN104989539A (en) Internal combustion engine for direct injection of double-gas fuel in cylinder under EGR condition and control method
US20230193859A1 (en) System device for stratified injecting exhaust gas recirculation for clean combustion of internal combustion engine
CN203532106U (en) Pure oxygen engine
CN204961094U (en) Two gaseous fuel&#39;s of direct injection internal -combustion engine under EGR condition
CN109252990B (en) Air inlet temperature control system meeting requirements of gasoline compression ignition full working condition on air inlet temperature
CN108194207B (en) Variable compression ratio system of internal combustion engine and internal combustion engine
Zhang et al. Evaluation of exhaust gas recirculation and fuel injection strategies for emission performance in marine two-stroke engine
CN1327121C (en) Methane fuel engine with very low discharge
CN214997915U (en) Hydrogen ethanol engine for range extender
CN201218149Y (en) Waste gas re-circulating system of 1.9L high pressure co-rail supercharging after-cooling diesel engine
CN210637158U (en) In-line five-cylinder diesel engine
CN208153201U (en) A kind of egr system and engine of engine
CN207470317U (en) A kind of mixing arrangement for the gas recirculation system for being applied to three cylinder engines with supercharger
CN101344045B (en) System and method for implementing gasoline engine mixed combustion mode

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140409

Termination date: 20171122