CN202756125U - Air intake-and-exhaust pipeline connecting system with tee coupling - Google Patents

Abstract

The utility model discloses an air intake-and-exhaust connecting system with a tee coupling and relates to the technical field of internal combustion engines. The air intake-and-exhaust pipeline connecting system with the tee coupling comprises an air intake pipe, an engine, an air exhaust pipe, an air compressor, a turbine, a connecting pipe, a volume chamber, a mobile body and an elastic component. The connecting pipe is communicated with the volume chamber, and the mobile body is arranged inside the volume chamber and is contacted with the inner side face of the volume chamber in sealed mode. A through pipe penetrates through the left side face and the right side face of the mobile body, and two ends of the elastic component are respectively connected with the upper side face of the mobile body and the upper side face of the volume chamber. When the engine is in the medium-speed or low-speed working conditions, the mobile body moves upward inside the volume chamber, the recycling rate of waste gas is large, exhaust temperature of each cylinder of the engine is low and the integrated performance is good. When the engine is in the high-speed working condition, the mobile body moves downward inside the volume chamber, the recycling rate of the waste gas is small, the dynamic property of the engine is good, and the integrated performance is good. The air intake-and-exhaust connecting system with the tee coupling is reasonable in design, simple in structure, and suitable for a waste gas recycling system with a turbocharger.

Description

Intake and exhaust pipeline connected system with tee union

Technical field

The utility model relates to a kind of gas recirculation system of field of internal combustion engine, particularly a kind of intake and exhaust pipeline connected system with tee union 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.Gas recirculation 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 ER EGR 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 ER EGR Rate, to reduce row's temperature, reduces to pollute; When high-speed working condition, motor needs less ER EGR 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 ER EGR Rate, can take into account preferably motor in high rotating speed operating mode; But its ER EGR 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, a kind of intake and exhaust pipeline connected system with tee union is provided, has made its ER EGR 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 engine air inlet tube, the left wall of cavity volume is connected, 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, the two ends of the 4th connecting tube respectively with engine air inlet tube, the cavity volume upper 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 charge overpressure is lower, the cavity volume internal pressure of moving body top is also lower, moving body moves up under the stretching action of elastic member, thereby the first connecting tube is connected with the second connecting tube by running through pipe, ER EGR 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 charge overpressure is higher, the cavity volume internal pressure of moving body top is also higher, moving body moves down after overcoming the elastic force of elastic member and the tensile elasticity parts, thereby the first connecting tube and the second connecting tube are cut off mutually, ER EGR Rate reduces, and engine power performance is better, and overall performance is more excellent.The cavity volume of moving body below is connected with engine exhaust pipe by the 3rd connecting tube, can prevent the mobile of moving body transition when high-speed working condition downwards, in order to avoid cause the first connecting tube and the connection of the second connecting tube when high-speed working condition.

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 gas recirculation system with turbosupercharger, can take into account the every speed operating mode of motor, can make again gas recirculation system not need special ER EGR Rate control mechanism.

Description of drawings

Fig. 1 is that the utility model is with the structural representation of the intake and exhaust pipeline connected system of tee union;

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, 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 engine air inlet tube 3, the left wall 12 of cavity volume is connected, 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, the two ends of the 4th connecting tube 22 respectively with engine air inlet tube 3, cavity volume upper wall surface 10 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 air inlet tube 3 internal pressures are lower, the cavity volume internal pressure of moving body 16 tops is also lower, moving body 16 moves up under the stretching action of elastic member 17, thereby the first connecting tube 18 is connected with the second connecting tube 19 by running through pipe 21, ER EGR 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 air inlet tube 3 internal pressures are higher, the cavity volume internal pressure of moving body 16 tops is also higher, moving body 16 moves down after the elastic force that overcomes elastic member 17 and tensile elasticity parts 17, thereby the first connecting tube 18 and the second connecting tube 19 are cut off mutually, ER EGR Rate reduces, and the power character of motor 4 is better, and overall performance is more excellent.The cavity volume 9 of moving body 16 belows is connected with engine exhaust pipe 5 by the 3rd connecting tube 20, can prevent the mobile of moving body 16 transition when high-speed working condition downwards, in order to avoid cause the first connecting tube 18 and 19 connections of the second connecting tube when high-speed working condition.Therefore, the utility model can be taken into account the every speed operating mode of motor 4 preferably.

Claims (2)

1. intake and exhaust pipeline connected system with tee union, 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 engine air inlet tube (3), the left wall of cavity volume (12) is connected, 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, the two ends of the 4th connecting tube (22) respectively with engine air inlet tube (3), cavity volume upper wall surface (10) 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. the intake and exhaust pipeline connected system with tee union according to claim 1, 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.

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