EP0624228A1 - Throttle device for an internal combustion engine and process for producing venturis in the throttle device. - Google Patents
Throttle device for an internal combustion engine and process for producing venturis in the throttle device.Info
- Publication number
- EP0624228A1 EP0624228A1 EP93924506A EP93924506A EP0624228A1 EP 0624228 A1 EP0624228 A1 EP 0624228A1 EP 93924506 A EP93924506 A EP 93924506A EP 93924506 A EP93924506 A EP 93924506A EP 0624228 A1 EP0624228 A1 EP 0624228A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering
- walls
- contours
- throttle valve
- intake duct
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
Definitions
- Throttle device for an internal combustion engine and method for producing dosing walls in the throttle device
- the invention is based on a throttle device for an internal combustion engine or a method for producing metering or metering walls in the throttle device according to the preamble of claim 1 or claim 2.
- a throttle device for internal combustion engines is already known (DE -OS 30 38 945, US Pat. No. 4,391,247), in which a throttle element is arranged in an intake duct, the throttle element moving in its range of rotation relative to metering or metering walls of the intake duct, so that the between the throttle element and the The amount of air flowing past metering or metering walls is limited when the throttle element is opened.
- the throttle device according to the invention with the characterizing features of claim 1 and the method according to the invention with the characterizing features of claim 2 have the advantage that without additional complicated arrangements, for example gears, for setting the desired opening angle of the throttle element, an extremely precise dosage of the am Throttle element amount of air flowing past is reached in the range of opening angles of, for example, 0 ° to 40 °.
- the intake duct has metering or metering walls in the areas of opening angles from 0 ° to 40 ° of the throttle element, the contours of which are created by a method of shifting the center points of a chip-removing element on a previously calculated path in the intake duct.
- This method for producing the metering or metering walls of the suction channel has the advantage that the metering or metering walls no longer have to be spherical, but contours of the metering or metering walls are obtained which deviate from a spherical shape and follow the contour of the center points of the chip-removing element as a parallel contour, for example, at a constant distance, or which even increase due to, for example, a continuously increasing radius of rotation of the chip-removing element of remove the contour of the centers of the cutting element in a pre-calculated manner.
- a simple return spring mechanism can be used to move the throttle element in the direction of the closed position .
- the throttle element is oval.
- the throttle element In a cylindrical region of the intake duct, the throttle element is namely tightly fitted at an angle to the horizontal plane in the intake duct of, for example, 3 ° to 5 °; this position corresponds to the closed position of the throttle element.
- the oval shape of the throttle element prevents the throttle element from jamming in the intake duct.
- the throttle element In the projection of the throttle element into the horizontal plane of the intake duct, the throttle element appears circular.
- the invention relates to a throttle device with an intake duct 5 and a throttle valve 2 arranged therein, metering or metering walls 16 and 17 of the intake duct 5 in the swivel range of the throttle valve 2 have a specially designed contour in order to influence the air flow in the intake duct 5 very precisely.
- the intake duct 5 of the throttle device is connected downstream to an intake line of an internal combustion engine.
- the throttle device according to the invention is shown schematically. The exact representation of a housing 1, the fastening of the throttle valve 2 in a throttle valve shaft 3 and the fastening of the throttle valve shaft 3 in the housing 1 are dispensed with, since these elements of the throttle device correspond to the prior art.
- the elliptical throttle valve 2 which controls the air flow in the intake duct 5 of the internal combustion engine, which is not described in any more detail, is located within the, for example, circular but stepped intake duct 5.
- the throttle valve 2 is arranged with the throttle valve shaft 3 in a cylindrical region 7 of the intake duct 5, the throttle valve 2 in the closed position making an angle 0 (from 3 ° to 5 ° to a horizontal plane 8 which runs through the throttle valve shaft 3 and which divides, forms and thus does not protrude from the cylindrical area 7 in the axial direction 7.
- the throttle valve 2 is designed in an oval or elliptical shape.
- the projection of the oval throttle valve 2 into the horizontal plane 8 of the intake duct 5 results in a circular throttle valve 2.
- a longitudinal axis 9 runs centrally through the cylindrical region 7 of the intake duct 5, in which the throttle valve 2 is completely in the closed position.
- This longitudinal axis 9 extends eccentrically in both directions in circular regions 12 and 13 of the axial region upstream and downstream of the cylindrical region 7 Intake duct 5. Those shown as dash-dot lines
- Areas 12 and 13 of the intake duct 5 are each distant by the amount of an offset E to the right or left of the longitudinal axis 9.
- the radial extent of the cylindrical area 7 is characterized by the amount of a radius R.
- Area 7 is selected so that it is slightly larger than the radius of the circular throttle valve 2 projected into the horizontal plane 8, so that a small space is formed between the intake duct 5 and the throttle valve 2.
- the areas 12 and 13 of the intake duct 5 have radii R which are either larger than the radius R or correspond exactly to the dimension of the radius R_.
- the entire radial extent of the intake duct 5 upstream and downstream of the throttle valve 2 is formed by twice the radius R and twice the offset E.
- the cylindrical region 7 of the intake duct 5 is adjoined immediately upstream and downstream by metering or metering walls 16 and 17, the circumference of which is formed, for example, in each case by 180 °, the metering or metering wall 16 on the opposite side of the intake duct 5 to the metering or metering wall 17.
- the metering or metering walls 16 and 17 form, for example over 180 ° of their circumference, the connecting pieces of the intake duct 5 between the cylindrical area 7 and the areas 12 and 13, which have, for example, circular cross sections.
- the metering or metering walls 16 and 17 follow via the Remaining the circumference of the original casting contour, unprocessed channel sections 18 and 19, the circumferential size of which is determined by the extent of the metering or metering walls 16 and 17 and, for example, is also 180 °.
- the duct sections 18 and 19 can be left in their unprocessed form, since the contours of the duct sections 18 and 19 of the intake duct 5 play no role for the air throughput per opening angle of the throttle valve 2 and thus for the air characteristic curve.
- the metering or metering walls 16 and 17 are intended to contribute to the most accurate metering of the amount of air flowing past the throttle valve 2, above all in the range of opening angles up to 40 °.
- the contours of the metering or metering walls 16 and 17 are generated by means of a method with a chip-removing element 20, for example with a turning tool.
- the turning tool 20, which is shown schematically with a two-dot chain line, rotates around a turning center M, the turning center M corresponding to a previously calculated course B, which is characterized by a dash line, in axial and radial Direction is shifted.
- the dot line characterizing the course B passes through intersections 21 of the longitudinal axis 9 with the horizontal planes 26 and 27 delimiting the cylindrical region 7.
- the course B of the dotted line is calculated in such a way that initially in a plane perpendicular to the throttle valve shaft 3 and through the longitudinal axis 9 and corresponding to the plane of the drawing, adapted to the needs of the internal combustion engine, contours 16 'and 17' of the metering or metering walls 16 and 17 can be specified. Subsequently, fictitious cutting planes perpendicular to the longitudinal axis 9 are generated at predetermined, almost infinitely small axial distances b.
- a radial distance c is removed in the direction of the longitudinal axis 9, which radial distance c can be equal or unequal to the radius.
- the radial distance c starting from the contours 16 'and 17' of the metering or metering walls 16 and 17 ends in the respective center of the turning tool M.
- the consequence of the center of turning tools M thereby determined in the individual cutting planes with the axial distances b is the course shown by the dotted line B.
- the turning tool 20 is displaced along the course B with rotation in the axial and radial direction.
- the processing of the housing 1 to create the desired contours of the metering or metering walls 16 and 17 is therefore not carried out from a fixed point in the intake duct 5.
- the turning tool 20 rotates with a
- contours of the metering or metering walls 16 and 17 are now produced by displacing the turning tool 20 axially with radial displacements in sufficiently small steps, the turning center points M following the course B. It can also be imagined that the contours of the metering or metering walls 16 and 17 are achieved by between the cutting planes mentioned above With the axial spacing b, an almost infinite number of axially narrow cylinders are produced by the turning tool 20, which are minimally offset radially from one another and whose circumferences, for example by 180 °, give the stepless spatial contours of the metering or metering walls 16 and 17.
- the radial expansion per axial path section C B can take place continuously, but not necessarily linearly.
- a dimension R which is the distances between the ends 24 and 25 of the metering or metering walls 16 and 17 and the intersection points 21 of the longitudinal axis 9 with the horizontal planes closing off the cylindrical region 7
- R R
- the cylinders generated by the turning tool 20 are shifted so that the metering or metering walls 16 and 17 assume a spherical shape in the plane of the drawing.
Abstract
Dans les dispositifs connus de réglage des gaz, les conduits d'aspiration dans la zone de pivotement des éléments d'étranglement sont cylindriques et sont conçus de manière à former des parois de réglage ou de dosage n'influant pas de façon optimale sur le débit d'air pour de petits angles d'ouverture de l'élément d'étranglement. Le nouveau dispositif de réglage se caractérise par ses parois de réglage ou de dosage (16, 17) ajustées de façon particulièrement précise dans la zone des petits angles d'ouverture du clapet d'étranglement (2) dans le conduit d'aspiration (5), obtenues par déplacement d'un élément rotatif à enlèvement de copeaux (20), par son centre (M), sur une trajectoire prédéterminée (B) dans le conduit d'aspiration (5), en direction axiale, avec décalage radial. Ce procédé permet de réaliser les contours les plus divers des parois de réglage et de dosage (16, 17), en vue d'obtenir les courbes caractéristiques voulues débit d'air-angle d'ouverture. Le dispositif de réglage des gaz est utilisé généralement dans les moteurs à combustion interne, qui trouvent leur application principalement dans les véhicules automobiles.In known gas control devices, the suction ducts in the pivoting area of the throttle elements are cylindrical and are designed so as to form adjustment or metering walls which do not have an optimum influence on the flow rate. air for small opening angles of the throttle element. The new adjustment device is characterized by its adjustment or metering walls (16, 17) adjusted particularly precisely in the area of the small opening angles of the throttle valve (2) in the suction duct (5 ), obtained by displacement of a rotary chip removal element (20), through its center (M), on a predetermined path (B) in the suction duct (5), in the axial direction, with radial offset. This process makes it possible to produce the most diverse contours of the adjustment and metering walls (16, 17), with a view to obtaining the desired characteristic curves air flow-opening angle. The gas control device is generally used in internal combustion engines, which find their application mainly in motor vehicles.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4240127 | 1992-11-28 | ||
DE4240127A DE4240127C2 (en) | 1992-11-28 | 1992-11-28 | Throttle device for an internal combustion engine and method for producing metering walls in the throttle device |
PCT/DE1993/001069 WO1994012781A1 (en) | 1992-11-28 | 1993-11-10 | Throttle device for an internal combustion engine and process for producing venturis in the throttle device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0624228A1 true EP0624228A1 (en) | 1994-11-17 |
EP0624228B1 EP0624228B1 (en) | 1997-05-07 |
Family
ID=6473946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93924506A Expired - Lifetime EP0624228B1 (en) | 1992-11-28 | 1993-11-10 | Process for producing metering or proportioning venturis in an intake channel of a throttle device |
Country Status (6)
Country | Link |
---|---|
US (1) | US5465696A (en) |
EP (1) | EP0624228B1 (en) |
JP (1) | JPH07503526A (en) |
KR (1) | KR950700486A (en) |
DE (2) | DE4240127C2 (en) |
WO (1) | WO1994012781A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1063404A1 (en) * | 1999-06-22 | 2000-12-27 | Pierburg Aktiengesellschaft | Throttle body for internal combustion engine |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19615438A1 (en) * | 1995-07-17 | 1997-01-23 | Mann & Hummel Filter | Valve with rotary flaps and stationary elements |
JP3192355B2 (en) * | 1995-09-20 | 2001-07-23 | 株式会社日立製作所 | Intake control device for internal combustion engine |
US6186115B1 (en) * | 1995-12-19 | 2001-02-13 | Hitachi, Ltd. | Throttle valve control device for an internal combustion engine |
DE19728564A1 (en) * | 1997-07-04 | 1999-01-28 | Mannesmann Vdo Ag | Throttle body |
FR2762374B1 (en) * | 1997-04-18 | 1999-06-04 | Coutier Moulage Gen Ind | BUTTERFLY VALVE FOR REGULATING THE FLOW OF A FLUID AND ITS MANUFACTURING METHODS |
US6006722A (en) * | 1998-06-12 | 1999-12-28 | General Motors Corporation | Fine resolution air control valve |
US6129071A (en) * | 1998-07-20 | 2000-10-10 | Ford Global Technologies, Inc. | Throttle valve system |
DE19909982A1 (en) * | 1999-03-06 | 2000-09-07 | Bosch Gmbh Robert | Throttle body for controlling the performance of an internal combustion engine |
WO2001036799A1 (en) * | 1999-11-18 | 2001-05-25 | Siemens Automotive Inc. | Electronically controlled throttle valve with elliptical bore and throttle valve |
FR2805878B1 (en) * | 2000-03-01 | 2002-11-29 | Mark Iv Systemes Moteurs Sa | VALVE VALVE DEVICE AND REGULATION ASSEMBLY COMPRISING SUCH DEVICES |
US6454242B1 (en) * | 2001-02-15 | 2002-09-24 | Delphi Technologies, Inc. | Modified flow throttle bore |
DE10140409A1 (en) * | 2001-08-23 | 2003-03-13 | Siemens Ag | Method for producing a housing or an insert part for a housing of a throttle valve assembly and throttle valve assembly |
ITTO20010947A1 (en) * | 2001-10-05 | 2003-04-05 | Dayco Europe Srl | FLOW CONTROL DEVICE FOR FLUIDS. |
FR2833061B1 (en) * | 2001-12-05 | 2006-10-06 | Mark Iv Systemes Moteurs Sa | DEVICE FOR CONTROLLING THE FLOW IN A CONDUIT PORTION OR THE LIKE |
JP3872743B2 (en) * | 2002-03-28 | 2007-01-24 | 株式会社日立製作所 | Throttle valve opening / closing device |
US6698717B1 (en) * | 2002-10-24 | 2004-03-02 | Honeywell International Inc. | Modified butterfly valve and assembly |
JP2004204784A (en) * | 2002-12-25 | 2004-07-22 | Aisan Ind Co Ltd | Throttle valve device |
US7264224B1 (en) | 2006-12-19 | 2007-09-04 | Victaulic Company | Valve with offset venturi |
WO2010123910A1 (en) * | 2009-04-20 | 2010-10-28 | International Engine Intellectual Property Company, Llc | Valve with offset bore |
DE102009033411B4 (en) * | 2009-07-15 | 2012-10-31 | Pierburg Gmbh | Flap valve for an internal combustion engine |
US20130090042A1 (en) * | 2011-09-19 | 2013-04-11 | Springfix AG | Method for the production of metal disks and apparatus for carrying out the method |
JP5867322B2 (en) * | 2012-07-04 | 2016-02-24 | アイシン精機株式会社 | Airflow control device |
JP2015059625A (en) * | 2013-09-19 | 2015-03-30 | いすゞ自動車株式会社 | Butterfly valve device, internal combustion engine, and method of manufacturing butterfly valve device |
WO2016157364A1 (en) * | 2015-03-30 | 2016-10-06 | 三菱重工業株式会社 | Turbine supercharger, and two-stage supercharging system |
CN106194444B (en) * | 2016-08-26 | 2023-05-16 | 重庆隆鑫机车有限公司 | Engine throttle valve body, throttle valve and engine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5656938A (en) * | 1979-10-15 | 1981-05-19 | Nissan Motor Co Ltd | Apparatus for detecting opening of throttle valve |
US4474150A (en) * | 1982-11-22 | 1984-10-02 | General Motors Corporation | Valve assembly |
FR2575518B1 (en) * | 1984-12-28 | 1989-04-07 | Inst Francais Du Petrole | HOUSING AND BUTTERFLY ASSEMBLY OF A GAS FLOW CONTROL DEVICE |
US4905647A (en) * | 1988-06-20 | 1990-03-06 | Chrysler Motors Corporation | Throttle body |
FR2650360B1 (en) * | 1989-07-28 | 1991-11-29 | Peugeot | BUTTERFLY VALVE |
EP0433518A1 (en) * | 1989-12-21 | 1991-06-26 | Mecaplast Sam | Improvement in devices to control fluid flow |
JPH05296067A (en) * | 1992-04-20 | 1993-11-09 | Aisan Ind Co Ltd | Intake control device for internal combustion engine |
FR2694963B1 (en) * | 1992-08-21 | 1994-10-21 | Solex | Butterfly body with evolutionary intake duct and method of manufacturing such a body. |
-
1992
- 1992-11-28 DE DE4240127A patent/DE4240127C2/en not_active Expired - Fee Related
-
1993
- 1993-11-10 JP JP6512631A patent/JPH07503526A/en active Pending
- 1993-11-10 DE DE59306403T patent/DE59306403D1/en not_active Expired - Fee Related
- 1993-11-10 WO PCT/DE1993/001069 patent/WO1994012781A1/en active IP Right Grant
- 1993-11-10 EP EP93924506A patent/EP0624228B1/en not_active Expired - Lifetime
- 1993-11-10 US US08/256,836 patent/US5465696A/en not_active Expired - Fee Related
-
1994
- 1994-07-27 KR KR1019940702582A patent/KR950700486A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9412781A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1063404A1 (en) * | 1999-06-22 | 2000-12-27 | Pierburg Aktiengesellschaft | Throttle body for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JPH07503526A (en) | 1995-04-13 |
EP0624228B1 (en) | 1997-05-07 |
US5465696A (en) | 1995-11-14 |
DE4240127C2 (en) | 1997-04-24 |
DE59306403D1 (en) | 1997-06-12 |
WO1994012781A1 (en) | 1994-06-09 |
DE4240127A1 (en) | 1994-06-01 |
KR950700486A (en) | 1995-01-16 |
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