CN202832774U

CN202832774U - Air recycling device of utilizing exhaust as air source

Info

Publication number: CN202832774U
Application number: CN2012203584078U
Authority: CN
Inventors: 刘仲先; 邓德衡; 陈志锋
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2012-07-23
Filing date: 2012-07-23
Publication date: 2013-03-27
Anticipated expiration: 2022-07-23

Abstract

The utility model belongs to the technical field of an air recycling device of utilizing exhaust as air source. The air recycling device of utilizing exhaust as air source comprises an air inlet pipe, a engine, an air outlet pipe, a compressor, a turbine, a connecting pipe, a cubage cavity, a moving object, and a flexible assembly. The connecting pipe is communicated with a wall of the cubage cavity. The moving object is placed in the cubage cavity and is in a sealed contact with an inner wall of the cubage cavity. A penetrating pipe penetrates through a left wall and a right wall of the moving object. Two ends of the flexible assembly are respectively connected with an upper wall of the moving object and the upper wall of the cubage cavity. When the engine is in intermediate and low speed working condition, the moving object moves downward in the cubage cavity, the exhaust recycling rate is higher, exhaust temperature of each cylinder of the engine is lower, and overall performance is better. When the engine is in high speed working condition, the moving object moves upward in the cubage cavity, the exhaust recycling rate is lower, dynamic property of the engine is better, and overall performance is better. The air recycling device is rational in design, simple in structure, and suitable for the exhaust recycling system with the turbine supercharger.

Description

Utilize exhaust as the gas-recycling plant of source of the gas

Technical field

The utility model relates to a kind of exhaust gas recycling system of field of internal combustion engine, particularly a kind ofly utilize exhaust as the gas-recycling plant of source of the gas with turbosupercharger.

Background technique

The noxious emission of motor is a main source that causes pollution of atmosphere, along with the significance of environmental protection problem increases increasingly, reduces the important directions that this target of Engine's Harmful Emission becomes development of engine in the world today.Along with the consumption of world oil goods rises year by year, international oil price is high, and the Economy of diesel-oil vehicle is outstanding day by day, this so that diesel engine in power train in vehicle application in occupation of consequence more and more.So carry out the research of Harmful Emissions of Diesel Engine controlling method, it is the person's that is engaged in the Design Technology for Diesels top priority.Exhaust gas recycling system is to send the sub-fraction of the waste gas of diesel engine generation back to cylinder again.Exhaust gas recirculation since have inertia will the retarded combustion process, thereby that is to say that velocity of combustion will slow down the pressure initiation process that causes in the firing chamber and slow down, main cause that oxynitrides can reduce that Here it is.In addition, improve exhaust gas recirculation rate total extraction flow is reduced, so total pollutant output quantity will reduce relatively in the toxic emission.When middle low speed operating mode, motor needs larger exhaust gas recirculation rate, to reduce row's temperature, reduces to pollute; When high-speed working condition, motor needs less exhaust gas recirculation rate, to improve the power character of motor.

Find through the retrieval to the prior art document, China Patent No. ZL200410063439.5, patent name: electronic EGR gas control system, this patented technology provides a kind of device of control engine exhaust gas recirculation rate, can take into account preferably motor in high rotating speed operating mode; But its exhaust gas recirculation rate variation be to realize by special control structure, thereby the more complicated that control system is become.

Summary of the invention

The utility model is for above-mentioned the deficiencies in the prior art, provide a kind of and utilized exhaust as the gas-recycling plant of source of the gas, made its exhaust gas recirculation rate can self-control, taken into account preferably the every speed operating mode of motor, and simple in structure, do not need special control mechanism.

The utility model is achieved through the following technical solutions, the utility model comprises: the compressor air inlet machine pipe, gas compressor, engine air inlet tube, motor, engine exhaust pipe, turbine, turbine exhaust pipe, coupling shaft, cavity volume, the cavity volume upper wall surface, the cavity volume lower wall surface, the left wall of cavity volume, the right wall of cavity volume, the cavity volume front face, the cavity volume rear surface, moving body, elastic member, the first connecting tube, the second connecting tube, the 3rd connecting tube, run through pipe and the 4th connecting tube, the air inlet/outlet of gas compressor respectively with the air outlet of compressor air inlet machine pipe, the suction port of engine air inlet tube is connected, the air inlet/outlet of motor respectively with the air outlet of engine air inlet tube, the suction port of engine exhaust pipe is connected, the air inlet/outlet of turbine respectively with the air outlet of engine exhaust pipe, the suction port of turbine exhaust pipe is connected, gas compressor is connected with turbine by coupling shaft, the cross section of cavity volume is rectangular, the cavity volume upper wall surface, the cavity volume lower wall surface, the left wall of cavity volume, the right wall of cavity volume, the cavity volume front face, the cavity volume rear surface is fixed to be integrated, the two ends of the first connecting tube respectively with the left wall of cavity volume, one end of the 4th connecting tube is connected, the other end of the 4th connecting tube is connected with the compressor air inlet machine pipe, the two ends of the second connecting tube respectively with engine exhaust pipe, the right wall of cavity volume is connected, the two ends of the 3rd connecting tube respectively with engine exhaust pipe, the cavity volume lower wall surface is connected, moving body is installed in the cavity volume and with the internal face sealing of cavity volume and is contacted, run through pipe run through moving body about two walls, the two ends of elastic member respectively with the upper wall surface of moving body, the cavity volume upper wall surface is connected.

Further, in the utility model, elastic member is spring, the first connecting tube, the second connecting tube, runs through that pipe is straight pipe and internal diameter is identical, the dead in line of the axis of the first connecting tube and the second connecting tube, the axis of the first connecting tube and the axis that runs through pipe are at grade.

In working procedure of the present utility model, moving body can move up and down in cavity volume.When motor is in middle low speed operating mode, the engine exhaust overpressure is lower, the cavity volume internal pressure of moving body below is also lower, moving body moves down under the elastic reaction of elastic member, thereby the first connecting tube is connected with the second connecting tube by running through pipe, exhaust gas recirculation rate increases, and each cylinder row temperature drop of motor is low, and overall performance is more excellent; When motor is in high-speed working condition, the engine exhaust overpressure is higher, the cavity volume internal pressure of moving body below is also higher, moving body after overcoming the elastic force of elastic member to mobile and pressure elasticity parts, thereby the first connecting tube and the second connecting tube are cut off mutually, exhaust gas recirculation rate reduces, and engine power performance is better, and overall performance is more excellent.

Compared with prior art, the utlity model has following beneficial effect: the utility model is reasonable in design, simple in structure, be applicable to the exhaust gas recycling system with turbosupercharger, can take into account the every speed operating mode of motor, can make again exhaust gas recycling system not need special exhaust gas recirculation rate control mechanism.

Description of drawings

Fig. 1 is that the utility model utilizes exhaust as the structural representation of the gas-recycling plant of source of the gas;

Fig. 2 is the structural representation of A-A section among Fig. 1;

Wherein: 1, compressor air inlet machine pipe, 2, gas compressor, 3, engine air inlet tube, 4, motor, 5, engine exhaust pipe, 6, turbine, 7, turbine exhaust pipe, 8, coupling shaft, 9, cavity volume, 10, the cavity volume upper wall surface, 11, cavity volume lower wall surface, 12, the left wall of cavity volume, 13, the right wall of cavity volume, 14, the cavity volume front face, 15, cavity volume rear surface, 16, moving body, 17, elastic member, the 18, first connecting tube, 19, the second connecting tube, 20, the 3rd connecting tube, 21, run through pipe, the 22, the 4th connecting tube.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, the present embodiment provided detailed mode of execution and concrete operating process, but protection domain of the present utility model is not limited to following embodiment take technical solutions of the utility model as prerequisite.

Embodiment

As depicted in figs. 1 and 2, the utility model comprises: compressor air inlet machine pipe 1, gas compressor 2, engine air inlet tube 3, motor 4, engine exhaust pipe 5, turbine 6, turbine exhaust pipe 7, coupling shaft 8, cavity volume 9, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15, moving body 16, elastic member 17, the first connecting tube 18, the second connecting tube 19, the 3rd connecting tube 20, run through pipe the 21 and the 4th connecting tube 22, the air inlet/outlet of gas compressor 2 respectively with the air outlet of compressor air inlet machine pipe 1, the suction port of engine air inlet tube 3 is connected, the air inlet/outlet of motor 4 respectively with the air outlet of engine air inlet tube 3, the suction port of engine exhaust pipe 5 is connected, the air inlet/outlet of turbine 6 respectively with the air outlet of engine exhaust pipe 5, the suction port of turbine exhaust pipe 7 is connected, gas compressor 2 is connected with turbine 6 by coupling shaft 8, the cross section of cavity volume 9 is rectangular, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15 fixed being integrated, the two ends of the first connecting tube 18 respectively with the left wall 12 of cavity volume, one end of the 4th connecting tube 22 is connected, the other end of the 4th connecting tube 22 is connected with compressor air inlet machine pipe 1, the two ends of the second connecting tube 19 respectively with engine exhaust pipe 5, the right wall 13 of cavity volume is connected, the two ends of the 3rd connecting tube 20 respectively with engine exhaust pipe 5, cavity volume lower wall surface 11 is connected, moving body 16 is installed in the cavity volume 9 and with the internal face sealing of cavity volume 9 and is contacted, run through the pipe 21 run through moving body 16 about two walls, the two ends of elastic member 17 respectively with the upper wall surface of moving body 16, cavity volume upper wall surface 10 is connected, elastic member 17 is spring, the first connecting tube 18, the second connecting tube 19, run through the pipe 21 be straight pipe and internal diameter identical, the dead in line of the axis of the first connecting tube 18 and the second connecting tube 19, the axis of the first connecting tube 18 with run through pipe 21 axis at grade.

In working procedure of the present utility model, moving body 16 can move up and down in cavity volume 9.When motor 4 is in middle low speed operating mode, engine exhaust pipe 5 internal pressures are lower, the cavity volume internal pressure of moving body 16 belows is also lower, moving body 16 moves down under the elastic reaction of elastic member 17, thereby the first connecting tube 18 is connected with the second connecting tube 19 by running through pipe 21, exhaust gas recirculation rate increases, and each cylinder row temperature drop of motor 4 is low, and overall performance is more excellent; When motor is in high-speed working condition, engine exhaust pipe 5 internal pressures are higher, the cavity volume internal pressure of moving body 16 belows is also higher, moving body 16 after the elastic force that overcomes elastic member 17 to mobile and pressure elasticity parts 17, thereby the first connecting tube 18 and the second connecting tube 19 are cut off mutually, exhaust gas recirculation rate reduces, and the power character of motor 4 is better, and overall performance is more excellent.Therefore, the utility model can be taken into account the every speed operating mode of motor 4 preferably.

Claims

1. one kind is utilized exhaust as the gas-recycling plant of source of the gas, comprise compressor air inlet machine pipe (1), gas compressor (2), engine air inlet tube (3), motor (4), engine exhaust pipe (5), turbine (6), turbine exhaust pipe (7) and coupling shaft (8), the air inlet/outlet of gas compressor (2) respectively with the air outlet of compressor air inlet machine pipe (1), the suction port of engine air inlet tube (3) is connected, the air inlet/outlet of motor (4) respectively with the air outlet of engine air inlet tube (3), the suction port of engine exhaust pipe (5) is connected, the air inlet/outlet of turbine (6) respectively with the air outlet of engine exhaust pipe (5), the suction port of turbine exhaust pipe (7) is connected, gas compressor (2) is connected with turbine (6) by coupling shaft (8), characterized by further comprising cavity volume (9), cavity volume upper wall surface (10), cavity volume lower wall surface (11), the left wall of cavity volume (12), the right wall of cavity volume (13), cavity volume front face (14), cavity volume rear surface (15), moving body (16), elastic member (17), the first connecting tube (18), the second connecting tube (19), the 3rd connecting tube (20), run through pipe (21) and the 4th connecting tube (22), the cross section of cavity volume (9) is rectangular, cavity volume upper wall surface (10), cavity volume lower wall surface (11), the left wall of cavity volume (12), the right wall of cavity volume (13), cavity volume front face (14), fixed being integrated of cavity volume rear surface (15), the two ends of the first connecting tube (18) respectively with the left wall of cavity volume (12), one end of the 4th connecting tube (22) is connected, the other end of the 4th connecting tube (22) is connected with compressor air inlet machine pipe (1), the two ends of the second connecting tube (19) respectively with engine exhaust pipe (5), the right wall of cavity volume (13) is connected, the two ends of the 3rd connecting tube (20) respectively with engine exhaust pipe (5), cavity volume lower wall surface (11) is connected, moving body (16) is installed in the cavity volume (9) and with the internal face sealing of cavity volume (9) and is contacted, run through pipe (21) run through moving body (16) about two walls, the two ends of elastic member (17) respectively with the upper wall surface of moving body (16), cavity volume upper wall surface (10) is connected.

2. according to claim 1ly utilize exhaust as the gas-recycling plant of source of the gas, it is characterized in that described elastic member (17) is spring, described the first connecting tube (18), the second connecting tube (19), run through that pipe (21) is straight pipe and internal diameter is identical, the dead in line of the axis of the first connecting tube (18) and the second connecting tube (19), the axis of the first connecting tube (18) and the axis that runs through pipe (21) are at grade.