CN104775915B - A kind of internal combustion engine quick response variable volume intake system and its control method - Google Patents

A kind of internal combustion engine quick response variable volume intake system and its control method Download PDF

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Publication number
CN104775915B
CN104775915B CN201410838673.4A CN201410838673A CN104775915B CN 104775915 B CN104775915 B CN 104775915B CN 201410838673 A CN201410838673 A CN 201410838673A CN 104775915 B CN104775915 B CN 104775915B
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disk
inlet valve
closed
driven shaft
control method
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CN104775915A (en
Inventor
崔靖晨
隆武强
田华
田江平
杨添淏
赵强
王红新
钟兵
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Dalian University of Technology
Shannxi Diesel Engine Heavy Industry Co Ltd
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Dalian University of Technology
Shannxi Diesel Engine Heavy Industry Co Ltd
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Abstract

A kind of internal combustion engine quick response variable volume intake system and its control method, belong to internal-combustion engine variable valve control technology field.Variable volume intake system is arranged in the air intake duct before inlet valve, mainly including disk, driven shaft, sector rack etc..Engaged between driven shaft and sector rack using gear type, disk is fixed and is inserted into driven axial trough.Sector rack is directly driven by rotary drive mechanism or driven indirectly by rack by Direct Action Type drive mechanism.By controlling the open/close states of disk, disk standard-sized sheet, in advance closing are realized, postpones and opens+the control method such as closing in advance and multiple unlatching, meets the requirement that different engine conditions flow to air inflow and air inlet, reaches the purpose for improving engine performance.By the gearratio for adjusting the meshing gear pair between disk maximum operation angle and driven shaft and sector rack so that existing drive mechanism can meet the driving requirement of the system, and various parts position adjustments are flexible, improve the adaptability of system.

Description

A kind of internal combustion engine quick response variable volume intake system and its control method
Technical field
The present invention relates to a kind of internal combustion engine quick response variable volume intake system and its control method, belong to internal-combustion engine variable gas Gate control technical field.
Background technology
Internal combustion engine ventilation effect directly affects the performance of internal combustion engine.The valve actuating mechanism that conventional gas introduction door lifting curve is fixed Preferable ventilation effect can only be reached in less condition range, in other condition ranges, engine performance is poor.It is right This, domestic and international researcher has carried out substantial amounts of research in terms of full working scope ventilation effect is optimized, such as optimize inlet structure, can Become air intake duct length technology, variable vortex air intake duct, variable pressure stabilizing cavity volume, variable air inlet gate technique etc..Wherein, variable air inlet Best results of the gate technique in terms of full working scope ventilation is optimized.Variable air inlet gate technique realize effect directly depend on it is variable enter The running situation of valve-driving system.Air inlet door drive system needs to meet following primary condition simultaneously:(a)With sufficiently large Pretightning force come overcome inlet valve by cylinder and air flue internal pressure difference acted on, to ensure the good closing of inlet valve;(b)With foot Big driving force is reached to overcome pretightning force, resistance and open inertia force, to ensure the quick unlatching of inlet valve;(c)In air inlet Door, which closes latter stage, needs have sufficiently large cushion effect of taking a seat, to realize that good inlet valve is taken a seat buffering;(d)With good Reliability etc..However, during due to internal combustion engine operation, in cylinder and air flue internal pressure difference situation of change determines inlet valve drivetrain System needs have very high pretightning force, driving force and cushion effect of taking a seat.Which greatly increases variable air inlet door drive system Development difficulty.Although developing a variety of variable air inlet door systems at present, such as mechanical, electric-liquid type, electromagnetic type, electric, It is, because the variable air inlet door drive system that the presence of these conditions mutually restricted directly results in practical is mostly machine Tool formula structure.And the variable degree of flexibility of inlet valve of mechanical variable air inlet door drive system is variable compared with electric-liquid type, electromagnetic type etc. Air inlet door drive system is low, and this greatly limits the performance of variable air inlet gate technique potentiality in terms of engine performance is improved.
The content of the invention
It is an object of the invention to:By designing a kind of internal combustion engine quick response variable volume intake system and its control method, For realizing:(a)By controlling the open/close states of disk, realize disk standard-sized sheet, in advance close, postpone open+close in advance with And the control method such as repeatedly open, meet the requirement that different engine conditions flow to air inflow and air inlet, realize with it is variable Air inlet gate technique is close, even preferably optimizes internal combustion engine ventilation effect, to reach the purpose for improving engine performance;(b)Pendulum The de- restrictive condition for restricting variable air inlet gate technique, to reduce the development difficulty of system;(c)By rationally designing system architecture, So that existing drive mechanism can meet the driving requirement of system, to reduce system development and use cost;(d)Simplify system Structure, flexible arrangement degree of the strengthening system in actual vehicle, to widen systematic difference prospect.
The technical solution adopted in the present invention is:A kind of internal combustion engine quick response variable volume intake system, it include disk, from Moving axis and sector rack, it is arranged on the air intake duct before inlet valve, the anti-drive end of the driven shaft passes through air intake duct the 2nd Seat, the bearing Inner of air intake duct the 1st is landed in, disk is fixed and is inserted into driven shaft translot, and sector rack rotary shaft is landed in air inlet In the bearing of road the 3rd;Driven shaft gear is meshed with the tooth section of sector rack the 1st;It is fan-shaped when using the driving of rotary drive mechanism Tooth plate rotary shaft is connected with rotary drive mechanism;When using Direct Action Type drive mechanism, in addition to ratch and sector rack 2nd tooth section, the tooth section of sector rack the 2nd are meshed with ratch, and ratch is connected with Direct Action Type drive mechanism;When the inlet valve is adopted During the double inlet valves controlled with double air intake branch dependents, the 1st dish is separately installed with the 1st air intake branch and the 2nd air intake branch Piece and the 2nd disk, the 1st disk and the 2nd disk are inserted into the 1st driven shaft and the 2nd driven shaft respectively, the 1st driven shaft and the 2nd from Moving axis is connected with sector rack again by gear or more bar link gears, the 1st disk and the 2nd disk be inserted into one it is driven In axle, be connected again with sector rack by driven shaft, or the 1st disk and the 2nd disk are inserted into a driven shaft, by from Moving axis is connected with sector rack again.
The disk is ellipse, and oval minor axis length is equal to the diameter d of air inlet pipe, and oval long axis length is short axle Length and disk standard-sized sheet and it is fully closed between angle theta cosine business, i.e. d/cos θ.
The tooth section of sector rack the 1st only retains necessary engaging tooth.
A kind of control method of internal combustion engine quick response variable volume intake system, under high speed full load mode, in inlet valve In open stage, using the control method of disk standard-sized sheet, disk remains opening;Under middle Low-speed full-load operating mode, The control method closed in advance by a small margin using disk, disk is opened and kept before IO Intake Valve Opens, before IC Intake Valve Closes Close, and the close moment of disk gradually shifts to an earlier date with the reduction of rotating speed, and disk closure timings is compared with IC Intake Valve Closes timing Maximum shifts to an earlier date 80 crank angle degrees;At part load, the control method significantly closed in advance using disk, disk is in air inlet Door is opened and kept before opening, and is closed before IC Intake Valve Closes, and the close moment of disk is gradual with the reduction of load In advance, disk closure timings is maximum compared with IC Intake Valve Closes timing shifts to an earlier date 160 crank angle degrees;In low- load conditions, using dish The control method that piece is repeatedly opened, disk are opened before IO Intake Valve Opens, and are continued holding 40 after IO Intake Valve Opens and write music Closed after the opening of Shaft angle, 70 crank angle degrees are opened and kept after air inlet top dead centre, 110 after air inlet top dead centre Crank angle degrees are closed, or the internal combustion engine for the inlet valve using double inlet valves of double air intake branch dependent controls, are adopted With the asymmetric control method opened and closed of disk, within the IO Intake Valve Opens stage, the 1st disk is completely closed, and the 2nd disk is then used and carried The control method of preceding closing;Under idling, the control method open+closed in advance is postponed using disk, disk is in IVO Inlet Valve Open Close before opening and keep, 60 crank angle degrees are opened and kept after air inlet top dead centre, and 120 write music axle turn after air inlet top dead centre Angle is nearby closed.
The beneficial effects of the invention are as follows:This internal combustion engine quick response variable volume intake system includes disk, driven shaft and fan Shape tooth plate, driven shaft gear are meshed with the tooth section of sector rack the 1st;When using the driving of rotary drive mechanism, sector rack Rotary shaft is connected with rotary drive mechanism;When using Direct Action Type drive mechanism, ratch is connected with Direct Action Type drive mechanism Connect;When double inlet valve of the inlet valve using double air intake branch dependent controls, the 1st disk and the 2nd disk are inserted into driven shaft It is interior, it is connected again with sector rack by driven shaft.It has the advantages of following several respects:(a)This internal combustion engine quick response Variable volume intake system is arranged in the air intake duct before inlet valve, in internal combustion engine running, flowing gas state in air intake duct Influence to the system is minimum, breaks away from the restrictive condition for restricting variable air inlet door drive system, greatly reduces the exploitation of system Difficulty;(b)By controlling the open/close states of disk, realize disk standard-sized sheet, in advance close, postpone open+in advance close and it is more The control methods such as secondary unlatching, meet the requirement that different engine conditions flow to air inflow and air inlet, realization and variable air inlet Gate technique is close, even preferably optimizes internal combustion engine ventilation effect, improves engine performance;(c)The disk design of ellipse, subtracts Small disk maximum operation angle θ, and then reduce the range of operation of drive mechanism, shorten the response time of system;(d)Pass through conjunction The gearratio of selecting system meshing gear pair is managed, adjusts the maximum operation angle of the tooth section of sector rack the 1st so that uses existing rotation Rotatable or Direct Action Type drive mechanism can meet the driving requirement of the system, reduce system development and use cost;(e)Fan The tooth section of shape tooth plate the 1st only retains necessary engaging tooth, using sector structure, reduces system dimension, and each component locations are adjusted Section is flexible, significantly enhances adaptability of the system in actual vehicle.
Brief description of the drawings
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is a kind of front view of internal combustion engine quick response variable volume intake system.
Fig. 2 is the A enlarged drawings in Fig. 1.
Fig. 3 is the Section A-A figure in Fig. 2.
Fig. 4 is the front view of another internal combustion engine quick response variable volume intake system.
Fig. 5 is the B enlarged drawings in Fig. 4.
Fig. 6 is the section B-B figure in Fig. 5.
Fig. 7 is the sectional view of the double inlet valves of the double air intake branches of single driven shaft.
Fig. 8 is the sectional view of double inlet valves of the double air intake branch dependent controls of double driven shafts.
Fig. 9 is operating mode inlet valve stroke curve and disk state diagram under high speed full load.
Figure 10 is inlet valve stroke curve and disk state diagram under middle Low-speed full-load operating mode.
Figure 11 is inlet valve stroke curve and disk state diagram under partial load condition.
Figure 12 is inlet valve stroke curve and disk state diagram under running on the lower load.
Figure 13 is inlet valve stroke curve and disk state diagram under idling operation.
Figure 14 is the inlet valve stroke curve and disk shape that lower pair of inlet valve of running on the lower load uses asymmetrical control method State figure.
In figure:1st, disk, 1-1, the 1st disk, 1-2, the 2nd disk, 2, driven shaft, 2-1, the 1st driven shaft, 2-2, the 2nd from Moving axis, 2a, driven shaft translot, 2b, driven shaft gear, 3, ratch, 4, inlet valve, 5, air intake duct, 5a, the bearing of air intake duct the 1st, 5b, the bearing of air intake duct the 2nd, 5c, the bearing of air intake duct the 3rd, 6, sector rack, 6a, the tooth section of sector rack the 1st, 6b, sector rack rotation Rotating shaft, 6c, the tooth section of sector rack the 2nd, 7, cylinder, 8, inlet manifold, 9-1, the 1st air intake branch, 9-2, the 2nd air intake branch, I, Inlet valve stroke curve, II, disk open/close states, II-1, the 1st disk open/close states, II-2, the 2nd disk open/close states, a, dish Piece fully open state, b, disk completely closed state.
Embodiment
Fig. 1,2,3 show a kind of structure chart of internal combustion engine quick response variable volume intake system.In figure, internal combustion engine quickly rings Answer variable volume intake system to include disk 1, driven shaft 2 and sector rack 6, be arranged on the air intake duct 5 before inlet valve 4, driven shaft 2 Anti-drive end pass through the bearing 5b of air intake duct the 2nd, be landed in the bearing 5a Inner of air intake duct the 1st, disk 1, which is fixed, is inserted into driven shaft horizontal stroke In groove 2a, sector rack rotary shaft 6b is landed in the bearing 5c of air intake duct the 3rd, driven shaft gear 2b and the tooth section of sector rack the 1st 6a is meshed, and sector rack rotary shaft 6b is connected with rotary drive mechanism.Disk 1 is oval, oval minor axis length Equal to the diameter d of air inlet pipe, oval long axis length be minor axis length and the standard-sized sheet of disk 1 and be fully closed between angle theta cosine Business, i.e. d/cos θ.The tooth section 6a of sector rack the 1st only retains necessary engaging tooth.
Fig. 4,5,6 show the structure chart of another internal combustion engine quick response variable volume intake system.In figure, internal combustion engine is quick Response variable volume intake system includes disk 1, driven shaft 2, sector rack 6 and ratch 3, is arranged on the air intake duct 5 before inlet valve 4 On, the anti-drive end of driven shaft 2 passes through the bearing 5b of air intake duct the 2nd, is landed in the bearing 5a Inner of air intake duct the 1st, and disk 1 fixes inserting In driven shaft translot 2a, sector rack rotary shaft 6b is landed in the bearing 5c of air intake duct the 3rd, the tooth section 6c of sector rack the 2nd with Ratch 3 is meshed, and ratch 3 is connected with Direct Action Type drive mechanism.Disk 1 is ellipse, and oval minor axis length is equal to air inlet The diameter d of pipe, oval long axis length be minor axis length and the standard-sized sheet of disk 1 and be fully closed between angle theta cosine business, i.e. d/ cosθ.The tooth section 6a of sector rack the 1st only retains necessary engaging tooth.
Fig. 7 shows the structure chart of the double inlet valves of the double air intake branches of single driven shaft.In figure, the 1st air intake branch 9-1 and the 2nd The 1st disk 1-1 and the 2nd disk 1-2 is separately installed with air intake branch 9-2, the 1st disk 1-1 and the 2nd disk 1-2 are inserted into one In root driven shaft 2, it is connected again with sector rack 6 by driven shaft 2.
Fig. 8 shows the structure chart of double inlet valves of the double air intake branch dependent controls of double driven shafts.In figure, the 1st air inlet The 1st disk 1-1 and the 2nd disk 1-2, the 1st disk 1-1 and the 2nd disk are separately installed with branch pipe 9-1 and the 2nd air intake branch 9-2 1-2 is inserted into the 1st driven shaft 2-1 and the 2nd driven shaft 2-2 respectively, and the 1st driven shaft 2-1 and the 2nd driven shaft 2-2 pass through gear Or more bar link gears are connected with sector rack 6 again.
Fig. 9 shows inlet valve stroke curve and disk state diagram under high speed full load mode.Under high speed full load, it is Guarantee air inflow is abundant, realizes that combustion engine powered output is powerful, using the control method of disk standard-sized sheet, i.e., is opened in inlet valve 4 Open in the stage, disk 1 remains opening.
Figure 10 shows inlet valve stroke curve and disk state diagram under middle Low-speed full-load operating mode.In middle Low-speed full-load Under, because with the reduction of rotating speed, air-intake of combustion engine inertia weakens, it is necessary to terminate intake process in advance to prevent from entering in cylinder Working medium flows back to air intake duct.The control method closed in advance by a small margin using disk, i.e. disk 1 open preceding unlatching in inlet valve 4 And keep, preceding closing is closed in inlet valve 4, and the close moment of disk 1 gradually shifts to an earlier date with the reduction of rotating speed, and disk closes 80 crank angle degrees or so can be shifted to an earlier date compared with IC Intake Valve Closes timing maximum by closing timing.
Figure 11 shows inlet valve stroke curve and disk state diagram under sub-load.At part load, in order to realize Control load by controlling air inflow and realize that the gloomy circulation of Acker gold reduces the purpose of NOx emission in cylinder, it is big using disk The control method that amplitude is closed in advance, i.e. disk 1 are opened and kept before inlet valve 4 is opened, and preceding closing is closed in inlet valve 4, And the close moment of disk 1 gradually shifts to an earlier date with the reduction of load, disk closure timings is maximum compared with IC Intake Valve Closes timing 160 crank angle degrees or so can be shifted to an earlier date.
Figure 12 shows inlet valve stroke curve and disk state diagram under running on the lower load.In low- load conditions, in order to Ensure air-fuel mixture fully, it is necessary to which air inlet has enough turbulence intensities.The control method repeatedly opened using disk, i.e. disk 1 opens preceding unlatching in inlet valve 4, and after continuing to keep the opening of 40 crank angle degrees or so after inlet valve 4 is opened Close, open and keep near 70 crank angle degrees after air inlet top dead centre, after air inlet top dead centre near 110 crank angle degrees Close.
Figure 13 shows inlet valve stroke curve and disk state diagram under idling operation.Under idling operation, in order to ensure Idle stability and reduction idling oil consumption and discharge, the control method open+closed in advance is postponed using disk, i.e. disk 1 exists Inlet valve 4 is closed and kept before opening, and is opened and is kept near 60 crank angle degrees after air inlet top dead centre, in air inlet top dead centre 120 crank angle degrees are nearby closed afterwards.
Figure 14 shows that lower pair of inlet valve of running on the lower load uses the inlet valve stroke curve and dish of asymmetrical control method Piece state diagram.In the open stage of inlet valve 4, the 1st disk 1-1 is completely closed or postponed using disk and open+closed in advance Control method, the 2nd disk 1-2 is then using the control method closed in advance.

Claims (1)

1. a kind of control method of internal combustion engine quick response variable volume intake system, the variable volume intake system include disk(1), from Moving axis(2)And sector rack(6), it is arranged on inlet valve(4)Preceding air intake duct(5)On, it is characterized in that:The driven shaft(2)'s Anti-drive end passes through the bearing of air intake duct the 2nd(5b), it is landed in the bearing of air intake duct the 1st(5a)Inner, disk(1)Fixation is inserted into driven Axle translot(2a)It is interior, sector rack rotary shaft(6b)It is landed in the bearing of air intake duct the 3rd(5c)It is interior;Driven shaft gear(2b)With sector The tooth section of tooth plate the 1st(6a)It is meshed;When using the driving of rotary drive mechanism, sector rack rotary shaft(6b)Driven with rotary Motivation structure is connected;When using Direct Action Type drive mechanism, in addition to ratch(3)With the tooth section of sector rack the 2nd(6c), sector The tooth section of plate the 2nd(6c)With ratch(3)It is meshed, ratch(3)It is connected with Direct Action Type drive mechanism;When the inlet valve(4)Adopt During the double inlet valves controlled with double air intake branch dependents, the 1st air intake branch(9-1)With the 2nd air intake branch(9-2)Inside pacify respectively Equipped with the 1st disk(1-1)With the 2nd disk(1-2), the 1st disk(1-1)With the 2nd disk(1-2)The 1st driven shaft is inserted into respectively (2-1)With the 2nd driven shaft(2-2)It is interior, the 1st driven shaft(2-1)With the 2nd driven shaft(2-2)Pass through gear or more bar gears Structure again with sector rack(6)It is connected, or the 1st disk(1-1)With the 2nd disk(1-2)It is inserted into a driven shaft(2)It is interior, lead to Cross driven shaft(2)Again with sector rack(6)It is connected;The disk(1)For ellipse, oval minor axis length is equal to air inlet pipe Diameter d, oval long axis length is minor axis length and disk(1)Standard-sized sheet and it is fully closed between angle theta cosine business, i.e. d/ cosθ;The tooth section of sector rack the 1st(6a)Only retain necessary engaging tooth;It is characterized in that:Under high speed full load mode, Inlet valve(4)In open stage, using the control method of disk standard-sized sheet, disk(1)Remain opening;It is complete in middle low speed Under load condition, the control method closed in advance by a small margin using disk, disk(1)In inlet valve(4)Open and protect before opening Hold, in inlet valve(4)Closed before closing, and disk(1)Close moment gradually shift to an earlier date with the reduction of rotating speed, disk close Close timing 80 crank angle degrees in advance maximum compared with IC Intake Valve Closes timing;At part load, significantly closed in advance using disk The control method closed, disk(1)In inlet valve(4)Open and keep before opening, in inlet valve(4)Closed before closing, and dish Piece(1)Close moment gradually shift to an earlier date with the reduction of load, disk closure timings shifts to an earlier date compared with IC Intake Valve Closes timing maximum 160 crank angle degrees;In low- load conditions, the control method repeatedly opened using disk, disk(1)In inlet valve(4)Open Preceding unlatching is opened, and in inlet valve(4)Closed after continuing the opening of 40 crank angle degrees of holding after unlatching, in air inlet only 70 crank angle degrees are opened and kept after point, and 110 crank angle degrees are closed after air inlet top dead centre, or for the inlet valve (4)Using the internal combustion engine of double inlet valves of double air intake branch dependents control, the control method opened and closed using disk asymmetry, Inlet valve(4)In open stage, the 1st disk(1-1)Completely close, the 2nd disk(1-2)Then using the controlling party closed in advance Method;Under idling, the control method open+closed in advance, disk are postponed using disk(1)In inlet valve(4)Closed before opening And keep, 60 crank angle degrees are opened and kept after air inlet top dead centre, are closed after air inlet top dead centre near 120 crank angle degrees Close.
CN201410838673.4A 2014-12-30 2014-12-30 A kind of internal combustion engine quick response variable volume intake system and its control method Expired - Fee Related CN104775915B (en)

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CN110043375B (en) * 2019-05-06 2020-05-15 山东交通学院 Gas engine air throttle

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EP1099839A2 (en) * 1999-11-11 2001-05-16 Visteon Global Technologies, Inc. Electronic throttle return mechanism with default and gear backlash control
US6918374B1 (en) * 2004-07-02 2005-07-19 Mitsubishi Denki Kabushiki Kaisha Intake air amount control apparatus for an engine
CN203296938U (en) * 2013-05-21 2013-11-20 浙江鸿科电气有限公司 Throttle valve device with split type sensor
CN203717138U (en) * 2014-02-28 2014-07-16 浙江鸿科电气有限公司 Throttle valve assembly
CN204003111U (en) * 2014-07-16 2014-12-10 重庆渝辉机械有限公司 electronic throttle body

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237213A1 (en) * 1992-11-04 1994-05-05 Bosch Gmbh Robert Adjusting unit in IC engine - has shorter axial distance between toothing and bearing of intermediate gear thus resulting in smaller load on bearing
EP1099839A2 (en) * 1999-11-11 2001-05-16 Visteon Global Technologies, Inc. Electronic throttle return mechanism with default and gear backlash control
US6918374B1 (en) * 2004-07-02 2005-07-19 Mitsubishi Denki Kabushiki Kaisha Intake air amount control apparatus for an engine
CN203296938U (en) * 2013-05-21 2013-11-20 浙江鸿科电气有限公司 Throttle valve device with split type sensor
CN203717138U (en) * 2014-02-28 2014-07-16 浙江鸿科电气有限公司 Throttle valve assembly
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