CN104675569B - Pressure difference type valve rotation regulating mechanism - Google Patents

Abstract

The invention discloses a pressure difference type valve rotation regulating mechanism, and belongs to the technical field of mechanical design. The pressure difference type valve rotation regulating mechanism includes a gas compressor, an engine, a turbine, connecting pipes, a rotating shaft, a containing cavity, a fixed body, penetrating pipes, a partition board, a rotating body and a connecting board, wherein one end of the rotating body extends into the first penetrating pipe and is in sealing contact with the wall surface of the first penetrating pipe, the other end of the rotating body is fixedly combined with the partition board, the two ends of the first connecting pipe are communicated with the gas inlet pipe of the gas compressor and the gas exhausting pipe of the turbine respectively. When the front-and-back pressure difference of the turbine is large, the rotating body drives the valve body to rotate clockwise, the exhaust gas recirculation ratio of the engine is large, and the detonation pressure of the engine is low. The pressure difference type valve rotation regulating mechanism is reasonable in design, simple in structure, and applicable to the exhaust gas recirculation system of the supercharged engine.

Description

Differential pressure type valve rotation regulating mechanism

Technical field

The present invention relates to a kind of exhaust gas recycling system of technical field of mechanical design, particularly a kind of differential valve Door rotation regulating mechanism.

Background technology

The noxious emission of electromotor is a main source causing atmospheric pollution, important with environmental protection problem Property increasingly increase, reducing this target of Engine's Harmful Emission becomes an important side of development of engine in the world today To.Consumption with world oil product rises year by year, and international oil price remains high, and the economy of diesel vehicle is outstanding day by day, This makes diesel engine in occupation of increasingly consequence in power train in vehicle application.So carrying out Harmful Emissions of Diesel Engine controlling party The research of method, is the top priority of the person that is engaged in Design Technology for Diesels.Exhaust gas recycling system is the one of the waste gas producing diesel engine Fraction sends cylinder again back to.EGR gas due to have inertia will retarded combustion process that is to say, that burning velocity will Slow down thus leading to the pressure initiation process in combustor to slow down, here it is the main cause that oxynitride can reduce.In addition, Improving ER EGR Rate can make total extraction flow reduce, and therefore total in waste gas discharge pollutant output will subtract relatively Few.In middling speed operating mode, electromotor needs larger exhaust gas recirculation rate, to reduce row's temperature, reduces pollution；In speed operation When, electromotor needs less exhaust gas recirculation rate, to improve the air inflow of electromotor.

Find through the retrieval to prior art literature, China Patent No. zl200410063439.5, patent name: electronics Formula EGR gas control system, this patented technology provides a kind of device controlling engine exhaust recirculation rate, energy Preferably take into account high speed conditions in electromotor；But the change of its exhaust gas recirculation rate be by special control structure Lai Realize, so that control system change is more complicated.

Content of the invention

The present invention is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of differential pressure type valve rotation regulating mechanism is so as to arrange Gas recirculation rate with self regulation, can preferably take into account the middle and slow speed of revolution operating mode of electromotor, and structure simple it is not necessary to special Controlling organization.

The present invention is achieved through the following technical solutions, and the present invention includes compressor air inlet machine pipe, compressor, electromotor Air inlet pipe, electromotor, the exhaust pipe of engine, turbine, turbine exhaust pipe, connecting shaft, the first connecting tube, valve, the second connecting tube, Rotary shaft, cavity volume, fixed body, first run through pipe, second run through pipe, the 3rd connecting tube, dividing plate, rotary body and connecting plate, pressure The air inlet/outlet of mechanism of qi is connected with the gas outlet of compressor air inlet machine pipe, the air inlet of engine air inlet tube respectively, electromotor Air inlet/outlet is connected with the gas outlet of engine air inlet tube, the air inlet of the exhaust pipe of engine respectively, the air inlet/outlet of turbine It is connected with the gas outlet of the exhaust pipe of engine, the air inlet of turbine exhaust pipe respectively, it is same that compressor and turbine pass through connecting shaft Axle is connected, and the longitudinal section of cavity volume is circular, and fixed body, the longitudinal section of rotary body are arc-shaped, cavity volume, fixed body, The cross section of rotary body is rectangle, and fixed body is arranged on volume intracavity and the internal face with cavity volume is consolidated, the Consistent poling, second run through pipe and be arranged in fixing internal, first runs through pipe, second runs through pipe and link together, and first runs through Pipe, the second cross section running through pipe are rectangle, and second runs through the cross-sectional area of pipe more than the first cross section running through pipe Area, dividing plate be arranged on second run through pipe in and with second run through pipe wall in sealing contact, one end of rotary body stretches into first Run through pipe in and with first run through pipe wall in sealing contact, the other end of rotary body and dividing plate are consolidated, rotary shaft One end passes through two wall up and down of cavity volume, and the other end of rotary shaft is embedded in the wall of the first connecting tube after passing through the first connecting tube On face, valve is arranged in the first connecting tube and is consolidated with rotary shaft, and rotary body, connecting plate, rotary shaft are fixedly arranged at one Rise, the two ends of the first connecting tube are connected with compressor air inlet machine pipe, turbine exhaust pipe respectively, one end of the second connecting tube passes through admittedly Run through pipe with first after determining body to be connected, the other end of the second connecting tube is connected with the exhaust pipe of engine, the 3rd connecting tube Two ends are connected with turbine exhaust pipe, cavity volume respectively.

Further, the first connecting tube, the second connecting tube, the 3rd connecting tube are uiform section pipe in the present invention.

In the work process of the present invention, rotary body can rotate freely in volume intracavity；Rotary body, connecting plate, rotation Axle, valve are consolidated, and four can be with synchronous rotary.When before and after turbine, pressure reduction is larger, before and after dividing plate, pressure reduction is also larger, Dividing plate turns clockwise, so rotary body band movable valve turns clockwise, engine exhaust recirculation rate increases, so that starting The detonation pressure of machine and maximum combustion temperature reduce.

Compared with prior art, the invention has the following beneficial effects: the present invention is reasonable in design, structure simple it is adaptable to Exhaust gas recycling system with turbocharger, can take into account the middle and slow speed of revolution operating mode of electromotor, can make exhaust gas recirculatioon again System does not need special exhaust gas recirculation rate controlling organization.

Brief description

Fig. 1 is the structural representation of the present invention；

Fig. 2 is the structural representation of a-a section in Fig. 1；

Fig. 3 is the structural representation of b-b section in Fig. 1；

Fig. 4 is the structural representation of c-c section in Fig. 3；

Fig. 5 is the structural representation of d-d section in Fig. 3；

Wherein: 1, compressor air inlet machine pipe, 2, compressor, 3, engine air inlet tube, 4, electromotor, 5, the exhaust pipe of engine, 6th, turbine, 7, turbine exhaust pipe, 8, connecting shaft, the 9, first connecting tube, 10, valve, the 11, second connecting tube, 12, rotary shaft, 13, Cavity volume, 14, fixed body, 15, first runs through pipe, and 16, second runs through pipe, the 17, the 3rd connecting tube, and 18, dividing plate, 9, rotary body, 20, connecting plate.

Specific embodiment

Below in conjunction with the accompanying drawings embodiments of the invention are elaborated, the present embodiment is front with technical solution of the present invention Carry, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.

Embodiment

As shown in Figures 1 to 5, the present invention include compressor air inlet machine pipe 1, compressor 2, engine air inlet tube 3, electromotor 4, The exhaust pipe of engine 5, turbine 6, turbine exhaust pipe 7, connecting shaft 8, the first connecting tube 9, valve 10, the second connecting tube 11, rotation Axle 12, cavity volume 13, fixed body 14, first run through pipe 15, second run through pipe 16, the 3rd connecting tube 17, dividing plate 18, rotary body 19 With connecting plate 20, the air inlet/outlet of compressor 2 air inlet with the gas outlet of compressor air inlet machine pipe 1, engine air inlet tube 3 respectively It is connected, the air inlet/outlet of electromotor 4 is connected with the gas outlet of engine air inlet tube 3, the air inlet of the exhaust pipe of engine 5 respectively Connect, the air inlet/outlet of turbine 6 is connected with the gas outlet of the exhaust pipe of engine 5, the air inlet of turbine exhaust pipe 7 respectively, calms the anger Machine 2 is coaxially connected by connecting shaft 8 with turbine 6, and the longitudinal section of cavity volume 13 is circular, fixed body 14, rotary body 19 vertical Section is arc-shaped, and cavity volume 13, fixed body 14, the cross section of rotary body 19 are rectangle, and fixed body 14 is arranged on appearance It is consolidated in long-pending chamber 13 and with the internal face of cavity volume 13, first runs through pipe 15, second runs through pipe 16 and be arranged in fixation In body 14, first runs through pipe 15, second runs through pipe 16 and link together, and first runs through pipe 15, the second cross section running through pipe 16 It is rectangle, second runs through the cross-sectional area of pipe 16 more than the first cross-sectional area running through pipe 15, and dividing plate 18 is arranged on Second run through in pipe 16 and with second run through pipe 16 wall in sealing contact, one end of rotary body 19 is stretched into first and is run through in pipe 15 And with first run through pipe 15 wall in sealing contact, the other end of rotary body 19 is consolidated with dividing plate 18, rotary shaft 12 One end passes through two wall up and down of cavity volume 12, and the other end of rotary shaft 12 is embedded in the first connection after passing through the first connecting tube 9 On the wall of pipe 9, valve 10 is arranged in the first connecting tube 9 and is consolidated with rotary shaft 12, rotary body 19, connecting plate 20th, rotary shaft 12 is consolidated, and the two ends of the first connecting tube 9 are connected with compressor air inlet machine pipe 1, turbine exhaust pipe 7 respectively, One end of second connecting tube 11 is run through pipe 15 with first and is connected after passing through fixed body 14, the other end of the second connecting tube 11 with send out Motivation exhaustor 5 is connected, and the two ends of the 3rd connecting tube 17 are connected with turbine exhaust pipe 7, cavity volume 13 respectively, the first connection Pipe 9, the second connecting tube 11, the 3rd connecting tube 17 are uiform section pipe.

In the work process of the present invention, rotary body 19 can rotate freely in cavity volume 13；Rotary body 9, connecting plate 20th, rotary shaft 12, valve 10 are consolidated, and four can be with synchronous rotary.When before and after turbine 6, pressure reduction is larger, dividing plate 18 Pressure reduction is also larger in front and back, and dividing plate 18 turns clockwise, so rotary body 19 band movable valve 10 turns clockwise, engine exhaust is again Cycling rate increases, so that the detonation pressure of electromotor and maximum combustion temperature reduce.

Claims (2)

1. a kind of differential pressure type valve rotation regulating mechanism, including compressor air inlet machine pipe (1), compressor (2), engine air inlet tube (3), electromotor (4), the exhaust pipe of engine (5), turbine (6), turbine exhaust pipe (7), connecting shaft (8), the first connecting tube (9), Valve (10), the second connecting tube (11), rotary shaft (12), the 3rd connecting tube (17), the air inlet/outlet of compressor (2) respectively with pressure The gas outlet of mechanism of qi air inlet pipe (1), the air inlet of engine air inlet tube (3) are connected, the air inlet/outlet of electromotor (4) respectively with The gas outlet of engine air inlet tube (3), the air inlet of the exhaust pipe of engine (5) are connected, the air inlet/outlet of turbine (6) respectively with The gas outlet of the exhaust pipe of engine (5), the air inlet of turbine exhaust pipe (7) are connected, and compressor (2) is passed through even with turbine (6) Spindle (8) is coaxially connected it is characterised in that also including cavity volume (13), fixed body (14), first running through pipe (15), second pass through Poling (16), dividing plate (18), rotary body (19) and connecting plate (20), the longitudinal section of cavity volume (13) is circular, fixed body (14), the longitudinal section of rotary body (19) is arc-shaped, cavity volume (13), fixed body (14), rotary body (19) cross section equal For rectangle, fixed body (14) is arranged in cavity volume (13) and is consolidated with the internal face of cavity volume (13), and first passes through Poling (15), second run through pipe (16) and be arranged in fixed body (14), first runs through pipe (15), second runs through pipe (16) connection Together, first run through pipe (15), the second cross section running through pipe (16) is rectangle, second runs through the cross section of pipe (16) More than the first cross-sectional area running through pipe (15), dividing plate (18) is arranged on second to be run through in pipe (16) and runs through with second area The wall of pipe (16) is in sealing contact, and one end of rotary body (19) is stretched into first and run through in pipe (15) and run through pipe (15) with first Wall is in sealing contact, and the other end of rotary body (19) is consolidated with dividing plate (18), and one end of rotary shaft (12) passes through volume Two wall up and down in chamber (12), the other end of rotary shaft (12) is embedded in the first connecting tube (9) after passing through the first connecting tube (9) On wall, valve (10) is arranged in the first connecting tube (9) and is consolidated with rotary shaft (12), rotary body (19), connection Plate (20), rotary shaft (12) are consolidated, the two ends of the first connecting tube (9) respectively with compressor air inlet machine pipe (1), turbine exhaust Pipe (7) is connected, and one end of the second connecting tube (11) is run through pipe (15) afterwards through fixed body (14) and is connected with first, and second even The other end of adapter (11) is connected with the exhaust pipe of engine (5), the two ends of the 3rd connecting tube (17) respectively with turbine exhaust pipe (7), cavity volume (13) is connected.

2. differential pressure type valve rotation regulating mechanism according to claim 1, is characterized in that, the first connecting tube (9), the second company Adapter (11), the 3rd connecting tube (17) are uiform section pipe.