CN103291471A - Air valve throat area control system - Google Patents

Air valve throat area control system Download PDF

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Publication number
CN103291471A
CN103291471A CN2013102056172A CN201310205617A CN103291471A CN 103291471 A CN103291471 A CN 103291471A CN 2013102056172 A CN2013102056172 A CN 2013102056172A CN 201310205617 A CN201310205617 A CN 201310205617A CN 103291471 A CN103291471 A CN 103291471A
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CN
China
Prior art keywords
engine
air inlet
exhaust pipe
cavity volume
connecting tube
Prior art date
Application number
CN2013102056172A
Other languages
Chinese (zh)
Inventor
叶兵
胡振
张开强
Original Assignee
上海交通大学
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.)
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Publication date
Application filed by 上海交通大学 filed Critical 上海交通大学
Priority to CN2013102056172A priority Critical patent/CN103291471A/en
Publication of CN103291471A publication Critical patent/CN103291471A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Technologies for the improvement of indicated efficiency of a conventional ICE
    • Y02T10/121Adding non fuel substances or small quantities of secondary fuel to fuel, air or fuel/air mixture

Abstract

The invention relates to an air valve throat area control system and relates to the technical field of mechanical design. The air valve throat area control system comprises an air compressor, an engine, a turbine, connecting pipes, a valve seat, a valve block, a rotary shaft, a volumetric cavity, a rotor and an elastic part. The rotor is mounted in the volumetric cavity and is in hermetic contact with the inner wall of the volumetric cavity. The lower wall of the rotor is connected with the lower wall of the volumetric cavity through the elastic part. Two ends of the first connecting pipe are communicated with an air inlet of a turbine exhaust pipe and an air inlet of the volumetric cavity respectively. Two ends of the third connecting pipe are communicated with the upper wall of an engine exhaust pipe and the upper wall of the volumetric cavity respectively. When the pressure of the engine exhaust pipe is high, the rotor drives the valve block to rotate clockwise, emission recirculation rate of the engine is high, and denotation pressure of the engine is low; when the pressure of the engine exhaust pipe is low, the rotor drives the valve block to rotate anticlockwise, emission recirculation rate of the engine is low, and oil consumption of the engine is low. The air valve throat area control system is reasonable in design, simple in structure, and applicable to exhaust recirculation systems for supercharged engines.

Description

Air valve throat area control system

Technical field

What the present invention relates to is the exhaust gas recycling system in a kind of mechanical designing technique field, particularly a kind of air valve throat area control system.

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 day by day, reduces the important directions that this target of Engine's Harmful Emission becomes motor development 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 make diesel engine in power train in vehicle application in occupation of more and more important position.So carry out the research of harmful emission of diesel engine thing controlling method, it is the top priority of being engaged in the diesel engine artificer.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 forming 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 the middling speed operating mode, motor needs bigger exhaust gas recirculation rate, to reduce row's temperature, reduces to pollute; When the low speed operating mode, motor needs less exhaust gas recirculation rate, to improve the air inflow 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 provide a kind of device of controlling the engine exhaust recirculation rate, can take into account preferably motor in high rotating speed operating mode; But the variation of its exhaust gas recirculation rate is to realize by special control structure, thus the more complicated that control system is become.

Summary of the invention

The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of air valve throat area control system is provided, make its exhaust gas recirculation rate can self-control, take into account the middle and slow speed of revolution operating mode of motor preferably, and simple in structure, do not need special control mechanism.

The present invention is achieved through the following technical solutions, the present invention includes the compressor air inlet machine pipe, gas compressor, engine air inlet tube, motor, engine exhaust pipe, turbine, turbine exhaust pipe, coupling shaft, first connecting tube, second connecting tube, the 3rd connecting tube, valve seat, valve body, running shaft, cavity volume, solid of rotation and elastic member, 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 links to each other by coupling shaft is coaxial with turbine, the upper end of valve seat has interior threaded hole, the lower end of valve seat has chamber volume, the upper end of valve body has outside thread, valve body is installed in the valve seat, the interior threaded hole of the outside thread of valve body upper end and valve seat upper end is complementary, the lower end of valve body is arranged in the chamber volume, the wall of cavity volume all is consolidated, the longitudinal section of cavity volume is rectangular, solid of rotation is installed in the cavity volume and with the internal face sealing of cavity volume and contacts, cavity volume, the cross section of solid of rotation is for all circular-arc, the lower wall surface of solid of rotation is connected with the lower wall surface of cavity volume by elastic member, left wall at cavity volume has a groove, one end of running shaft is consolidated with solid of rotation after passing groove on the wall of a cavity volume left side, the other end of running shaft and valve body upper end are consolidated, the two ends of first connecting tube respectively with turbine exhaust pipe, the suction port of chamber volume is connected, the two ends of second connecting tube respectively with the air outlet of chamber volume, the compressor air inlet machine pipe is connected, the two ends of the 3rd connecting tube respectively with engine exhaust pipe, the upper wall surface of cavity volume is connected.

Further, elastic member is spring in the present invention, and first connecting tube, the 3rd connecting tube are the uniform section pipe.

In working procedure of the present invention, solid of rotation can rotate freely in cavity volume, and solid of rotation, running shaft, valve body are consolidated.When the engine exhaust pipe internal pressure is big, the cavity volume internal pressure of solid of rotation top is also bigger, solid of rotation turns clockwise and the pressure elasticity parts, running shaft and valve body also turn clockwise synchronously, it is big that throat area between valve body and the valve seat becomes, the engine exhaust recirculation rate increases, thereby the detonation pressure of motor and maximum combustion temperature are reduced; When the engine exhaust pipe internal pressure hour, the cavity volume internal pressure of solid of rotation top is also less, solid of rotation is rotated counterclockwise under the elastic reaction of elastic member, running shaft and valve body also are rotated counterclockwise synchronously, throat area between valve body and the valve seat diminishes, the engine exhaust recirculation rate reduces, thereby air input of engine by air is increased, and oil consumption reduces.

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

Description of drawings

Fig. 1 is structural representation of the present invention;

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

Fig. 3 is the structural representation of B-B section among Fig. 2;

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, first connecting tube, 10, second connecting tube, the 11, the 3rd connecting tube, 12, valve seat, 13, valve body, 14, chamber volume, 15, running shaft, 16, cavity volume, 17, solid of rotation, 18, elastic member.

Embodiment

Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is prerequisite with the technical solution of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

Embodiment

As shown in Figure 1 to Figure 3, the present invention includes 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, first connecting tube 9, second connecting tube 10, the 3rd connecting tube 11, valve seat 12, valve body 13, running shaft 15, cavity volume 16, solid of rotation 17 and elastic member 18, 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 and turbine 6 are by 8 coaxial linking to each other of coupling shaft, the upper end of valve seat 12 has interior threaded hole, the lower end of valve seat 12 has chamber volume 14, the upper end of valve body 13 has outside thread, valve body 13 is installed in the valve seat 12, the interior threaded hole of the outside thread of valve body 13 upper ends and valve seat 12 upper ends is complementary, the lower end of valve body 13 is arranged in the chamber volume 14, the wall of cavity volume 16 all is consolidated, the longitudinal section of cavity volume 16 is rectangular, solid of rotation 17 is installed in the cavity volume 16 and with the internal face sealing of cavity volume 16 and contacts, cavity volume 16, the cross section of solid of rotation 17 is for all circular-arc, the lower wall surface of solid of rotation 17 is connected by the lower wall surface of elastic member 18 with cavity volume 16, left wall at cavity volume 16 has a groove, one end of running shaft 15 is consolidated with solid of rotation 17 after passing groove on the cavity volume 16 left walls, the other end of running shaft 15 and valve body 13 upper ends are consolidated, the two ends of first connecting tube 9 respectively with turbine exhaust pipe 7, the suction port of chamber volume 14 is connected, the two ends of second connecting tube 10 respectively with the air outlet of chamber volume 14, compressor air inlet machine pipe 1 is connected, the two ends of the 3rd connecting tube 11 respectively with engine exhaust pipe 5, the upper wall surface of cavity volume 16 is connected, elastic member 18 is spring, first connecting tube 9, the 3rd connecting tube 11 is the uniform section pipe.

In working procedure of the present invention, solid of rotation 17 can rotate freely in cavity volume 16, and solid of rotation 17, running shaft 15, valve body 13 are consolidated.When engine exhaust pipe 5 internal pressures are big, cavity volume 16 internal pressures of solid of rotation 17 tops are also bigger, solid of rotation 17 turns clockwise and pressure elasticity parts 18, running shaft 15 and valve body 13 also turn clockwise synchronously, it is big that throat area between valve body 13 and the valve seat 12 becomes, the engine exhaust recirculation rate increases, thereby the detonation pressure of motor and maximum combustion temperature are reduced; When engine exhaust pipe 5 internal pressures hour, cavity volume 16 internal pressures of solid of rotation 17 tops are also less, solid of rotation 17 is rotated counterclockwise under the elastic reaction of elastic member 18, running shaft 15 and valve body 13 also are rotated counterclockwise synchronously, throat area between valve body 13 and the valve seat 12 diminishes, the engine exhaust recirculation rate reduces, thereby air input of engine by air is increased, and oil consumption reduces.

Claims (2)

1. air valve throat area control system, 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) and turbine (6) are by coaxial linking to each other of coupling shaft (8), it is characterized in that, also comprise first connecting tube (9), second connecting tube (10), the 3rd connecting tube (11), valve seat (12), valve body (13), running shaft (15), cavity volume (16), solid of rotation (17) and elastic member (18), the upper end of valve seat (12) has interior threaded hole, the lower end of valve seat (12) has chamber volume (14), the upper end of valve body (13) has outside thread, valve body (13) is installed in the valve seat (12), the interior threaded hole of the outside thread of valve body (13) upper end and valve seat (12) upper end is complementary, the lower end of valve body (13) is arranged in the chamber volume (14), the wall of cavity volume (16) all is consolidated, the longitudinal section of cavity volume (16) is rectangular, solid of rotation (17) is installed in the cavity volume (16) and with the internal face sealing of cavity volume (16) and contacts, cavity volume (16), the cross section of solid of rotation (17) is for all circular-arc, the lower wall surface of solid of rotation (17) is connected by the lower wall surface of elastic member (18) with cavity volume (16), left wall at cavity volume (16) has a groove, one end of running shaft (15) is consolidated with solid of rotation (17) after passing groove on the left wall of cavity volume (16), the other end of running shaft (15) and valve body (13) upper end are consolidated, the two ends of first connecting tube (9) respectively with turbine exhaust pipe (7), the suction port of chamber volume (14) is connected, the two ends of second connecting tube (10) respectively with the air outlet of chamber volume (14), compressor air inlet machine pipe (1) is connected, the two ends of the 3rd connecting tube (11) respectively with engine exhaust pipe (5), the upper wall surface of cavity volume (16) is connected.
2. air valve throat area control system according to claim 1 is characterized in that, elastic member (18) is spring, and first connecting tube (9), the 3rd connecting tube (11) are the uniform section pipe.
CN2013102056172A 2013-05-28 2013-05-28 Air valve throat area control system CN103291471A (en)

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CN2013102056172A CN103291471A (en) 2013-05-28 2013-05-28 Air valve throat area control system

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527325A (en) * 2013-10-13 2014-01-22 刘飞 Rotary distance adjustment system for valve body and valve seat
CN103527352A (en) * 2013-10-13 2014-01-22 刘洪涛 Three-component synchronous rotating type exhaust gas flow adjusting system
CN103573432A (en) * 2013-09-24 2014-02-12 上海交通大学 Pressure control type mechanical rotating mechanism
CN103644050A (en) * 2013-11-27 2014-03-19 上海交通大学 Chain transmission type low-pressure exhaust circulation system
CN103670814A (en) * 2013-11-28 2014-03-26 上海交通大学 Flow regulating system with double rotating shafts
CN103670811A (en) * 2013-11-27 2014-03-26 上海交通大学 Intake pressure control type high-pressure exhaust gas circulating device
CN104653341A (en) * 2013-11-17 2015-05-27 胡志龙 Pneumatic air valve lift adjusting device
CN104653312A (en) * 2013-11-17 2015-05-27 张琨 Rotary pipeline flow control system
CN104653346A (en) * 2013-11-17 2015-05-27 胡志龙 Pneumatic device with air exhaust as air source
CN104653342A (en) * 2013-11-17 2015-05-27 徐敏 Butterfly valve system adjusting via exhausting pressure
CN104675570A (en) * 2013-12-01 2015-06-03 李华雷 Multi-part synchronous adjustment type mechanical control device
CN104675579A (en) * 2013-12-03 2015-06-03 汪文辉 Exhaust-controlled valve auto-rotating system
CN104675528A (en) * 2013-12-01 2015-06-03 汪文辉 Multi-loop adjusting rotating mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6019094A (en) * 1997-01-21 2000-02-01 Nissan Motor Co., Ltd. Engine exhaust recirculation device
WO2007148007A1 (en) * 2006-06-19 2007-12-27 Renault S.A.S Exhaust gas recirculation system for a combustion engine of the supercharged diesel type and method for controlling such an engine
CN103291503A (en) * 2013-05-24 2013-09-11 上海交通大学 Rotary exhaust gas flow rate regulating system
CN103291469A (en) * 2013-05-24 2013-09-11 上海交通大学 Rotary gas valve control mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6019094A (en) * 1997-01-21 2000-02-01 Nissan Motor Co., Ltd. Engine exhaust recirculation device
WO2007148007A1 (en) * 2006-06-19 2007-12-27 Renault S.A.S Exhaust gas recirculation system for a combustion engine of the supercharged diesel type and method for controlling such an engine
CN103291503A (en) * 2013-05-24 2013-09-11 上海交通大学 Rotary exhaust gas flow rate regulating system
CN103291469A (en) * 2013-05-24 2013-09-11 上海交通大学 Rotary gas valve control mechanism

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573432A (en) * 2013-09-24 2014-02-12 上海交通大学 Pressure control type mechanical rotating mechanism
CN103527325A (en) * 2013-10-13 2014-01-22 刘飞 Rotary distance adjustment system for valve body and valve seat
CN103527352A (en) * 2013-10-13 2014-01-22 刘洪涛 Three-component synchronous rotating type exhaust gas flow adjusting system
CN104653342A (en) * 2013-11-17 2015-05-27 徐敏 Butterfly valve system adjusting via exhausting pressure
CN104653346A (en) * 2013-11-17 2015-05-27 胡志龙 Pneumatic device with air exhaust as air source
CN104653312A (en) * 2013-11-17 2015-05-27 张琨 Rotary pipeline flow control system
CN104653341A (en) * 2013-11-17 2015-05-27 胡志龙 Pneumatic air valve lift adjusting device
CN103670811A (en) * 2013-11-27 2014-03-26 上海交通大学 Intake pressure control type high-pressure exhaust gas circulating device
CN103644050A (en) * 2013-11-27 2014-03-19 上海交通大学 Chain transmission type low-pressure exhaust circulation system
CN103670814A (en) * 2013-11-28 2014-03-26 上海交通大学 Flow regulating system with double rotating shafts
CN104675570A (en) * 2013-12-01 2015-06-03 李华雷 Multi-part synchronous adjustment type mechanical control device
CN104675528A (en) * 2013-12-01 2015-06-03 汪文辉 Multi-loop adjusting rotating mechanism
CN104675579A (en) * 2013-12-03 2015-06-03 汪文辉 Exhaust-controlled valve auto-rotating system

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Application publication date: 20130911