EP0736682B1 - Internal combustion engine with intake conduit made at least in part of plastics material - Google Patents
Internal combustion engine with intake conduit made at least in part of plastics material Download PDFInfo
- Publication number
- EP0736682B1 EP0736682B1 EP96103104A EP96103104A EP0736682B1 EP 0736682 B1 EP0736682 B1 EP 0736682B1 EP 96103104 A EP96103104 A EP 96103104A EP 96103104 A EP96103104 A EP 96103104A EP 0736682 B1 EP0736682 B1 EP 0736682B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- internal combustion
- combustion engine
- plastics material
- intake conduit
- 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.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- 229920003023 plastic Polymers 0.000 title description 4
- 239000004033 plastic Substances 0.000 title description 4
- 239000000463 material Substances 0.000 title 1
- 239000002184 metal Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Definitions
- the invention relates to an internal combustion engine with an at least partially plastic suction pipe.
- Such intake manifold arrangements are increasingly found in internal combustion engines Use, with a throttle body in the area of the intake manifold is provided in which a throttle valve the flow of air controls.
- the throttle valve is operated by an electric motor, the current parameter determined by a control unit for Excitation is supplied so that the electric motor corresponding to the throttle valve the specifications.
- the object of the invention is to provide a simple way of deriving the electrostatic Propose charges.
- the charges that form form at least one electrically sufficiently conductive connection is derived, this electrically conductive connection to the connection of the electric motor connected.
- the two Supply lines to the electric motor each with the outer wall of the throttle body are connected to the resulting voltage potential to halve so that any high-frequency interference that may occur the antenna effect can be avoided.
- a suction pipe is indicated schematically, the can consist of plastic. Includes the intake manifold area 10 throttle valve connector, electrically insulated from the intake manifold 12 on, the housing wall is usually made of metal. In the throttle valve connector 12, a throttle valve 14 is mounted, which with With the help of an axis 16 is rotatable and thus the passage of the suction pipe 10th releases or closes. An electric motor 18 actuates the axis 16 of the Throttle valve 14.
- the electric motor 18 is supplied with current with two connections 20 and 22, the control of the electric motor 18 is schematic with a control device 24 indicated, this control device is a conventional part of a electronic throttle control or an idle charge control and does not form part of the invention.
- the design of the resistors 28 and 32 is accordingly high impedance.
- Electrostatic charges can form in the area of the intake manifold via the electrical connections 26 and 30 to the electric motor connections 20, 22 are routed and can thus have a low impedance via the output stage flow away. It is particularly advantageous that in the control unit 24, with which the electric motor 18 is controlled in the final stages spark extinguishing systems are provided to inductive voltage peaks of the electric motor dismantle, these spark extinguishing systems are effective at the same time, to destroy the electrostatic voltage peaks.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Elimination Of Static Electricity (AREA)
- Lift Valve (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
Die Erfindung betrifft eine Brennkraftmaschine mit einem zumindest teilweise aus Kunststoff bestehenden Saugrohr.The invention relates to an internal combustion engine with an at least partially plastic suction pipe.
Derartige Saugrohranordnungen in Brennkraftmaschinen finden zunehmend Verwendung, wobei im Bereich des Saugrohres ein Drosselklappenstutzen vorgesehen ist, in dem eine Drosselklappe den Durchfluß der Luftmenge steuert. Die Drosselklappe wird dabei über einen Elektromotor betrieben, dem von einem Steuergerät entsprechend bestimmten Parameter Strom zur Erregung zugeführt wird, damit der Elektromotor die Drosselklappe entsprechend den Vorgaben einstellt.Such intake manifold arrangements are increasingly found in internal combustion engines Use, with a throttle body in the area of the intake manifold is provided in which a throttle valve the flow of air controls. The throttle valve is operated by an electric motor, the current parameter determined by a control unit for Excitation is supplied so that the electric motor corresponding to the throttle valve the specifications.
Ein Problem derartiger Anordnungen sind elektrostatische Aufladungen im Saugrohrbereich, insbesondere hervorgerufen durch den Kunststoff des Saugrohres. Dies führt zu Entladungen insbesondere im Bereich des metallischen Drosselklappenstutzens, wobei die sich dabei bildenden Spannungsüberschläge insbesondere für die Motorelektronik erhebliche Probleme mit sich bringen können.A problem with such arrangements are electrostatic charges in the Suction pipe area, in particular caused by the plastic of the Suction pipe. This leads to discharges, particularly in the metallic area Throttle body, whereby the resulting flashovers Significant problems, in particular for motor electronics can bring with it.
Stand der Technik ist es, derartigen Aufladungen mit Hilfe von Massebändern zu begegnen, es werden in den gefährdeten Bereichen Metallbänder oder Metallgeflechte vorgesehen, die mit der Fahrzeugmasse verbunden sind, so daß die elektrostatischen Aufladungen abgeleitet werden.State of the art is such charges with the help of ground straps to counter, there will be metal strips in the endangered areas or metal braids are provided, which are connected to the vehicle mass are so that the electrostatic charges are dissipated.
Aufgabe der Erfindung ist es, einen einfachen Weg zur Ableitung der elektrostatischen Aufladungen vorzuschlagen.The object of the invention is to provide a simple way of deriving the electrostatic Propose charges.
Die Aufgabe wird gelöst durch den Anspruch 1. The object is achieved by claim 1.
Erfindungsgemäß ist vorgesehen, daß die sich bildenden Aufladungen über mindestens eine elektrisch hinreichend leitende Verbindung abgeleitet werden, wobei diese elektrisch leitende Verbindung an den Anschluß des Elektromotors angeschlossen ist. Dabei wird die Tatsache zunutze gemacht, daß der Elektromotor niederohmig angesteuert wird und insbesondere in dem Ansteuergerät in den Endstufenbausteinen Funkenlöschsysteme vorgesehen sind, um Spannungsspitzen, die durch die hohe Induktivität des Elektromotors hervorgerufen werden, abzubauen.According to the invention, it is provided that the charges that form form at least one electrically sufficiently conductive connection is derived, this electrically conductive connection to the connection of the electric motor connected. This takes advantage of the fact that the electric motor is controlled with low resistance and in particular in the Control device provided in the power stage modules spark extinguishing systems are to voltage peaks caused by the high inductance of the electric motor are caused to degrade.
Durch die erfindungsgemäße Beschaltung kann in sehr einfacher und kostengünstiger Weise unter Vermeidung zusätzlichen Gewichts den elektrostatischen Aufladungen wirkungsvoll begegnet werden.Through the wiring according to the invention can be very simple and inexpensive Way avoiding additional weight the electrostatic Charges can be countered effectively.
In besonderer Ausgestaltung der Erfindung ist vorgesehen, daß die beiden Zuleitungen zu dem Elektromotor jeweils mit der Außenwandung des Drosselklappenstutzens verbunden sind, um das resultierende Spannungspotential zu halbieren, damit eventuell auftretende hochfrequente Störungen aufgrund der Antennenwirkung vermieden werden.In a special embodiment of the invention it is provided that the two Supply lines to the electric motor each with the outer wall of the throttle body are connected to the resulting voltage potential to halve so that any high-frequency interference that may occur the antenna effect can be avoided.
Im folgenden wird die Erfindung anhand der Figur beschrieben.The invention is described below with reference to the figure.
Mit dem Bezugszeichen 10 ist schematisch ein Saugrohr angedeutet, das
aus Kunststoff bestehen kann. An den Saugrohrbereich 10 schließt sich ein
gegenüber dem Saugrohr elektrisch isoliert gelagerter Drosselklappenstutzen
12 an, dessen Gehäusewandung üblicherweise aus Metall gefertigt ist.
In dem Drosselklappenstutzen 12 ist eine Drosselklappe 14 gelagert, die mit
Hilfe einer Achse 16 drehbar ist und somit den Durchlaß des Saugrohres 10
freigibt oder verschließt. Ein Elektromotor 18 betätigt die Achse 16 der
Drosselklappe 14.With the
Der Elektromotor 18 ist mit zwei Anschlüssen 20 und 22 mit Strom versorgt,
die Ansteuerung des Elektromotors 18 ist schematisch mit einem Ansteuergerät
24 angedeutet, dieses Ansteuergerät ist herkömmlicher Teil einer
elektronischen Drosselklappensteuerung oder auch einer Leerlauffüllungsregelung
und bildet keinen Teil der Erfindung.The
Zwischen der Wandung des Drosselklappenstutzens 12 und den Zuleitungen
20, 22 zum Elektromotor 18 ist eine elektrische Verbindung 30 und 26
vorgesehen, wobei die beiden Verbindungen jeweils einen Anschluß des
Elektromotors 18 mit der Drosselklappenwandung 12 verbinden.Between the wall of the
Zwei Widerstände 28 und 32, die in der elektrischen Verbindung 26 bzw. 30
zwischen Drosselklappenstutzen 12 und den Elektromotoranschlüssen 20,
22 vorgesehen sind, sorgen dafür, daß der Erregungsstrom für den Elektromotor
18 nicht kurzgeschlossen wird. Die Auslegung der Widerstände 28
und 32 erfolgt dementsprechend hochohmig.Two
Sich im Bereich des Saugrohres bildende elektrostatische Aufladungen können
über die elektrischen Verbindungen 26 und 30 auf die Elektromotoranschlüsse
20, 22 geleitet werden und können somit über die Endstufe niederohmig
abfließen. Von besonderem Vorteil ist dabei, daß im Steuergerät 24,
mit dem der Elektromotor 18 angesteuert wird, in den Endstufen Funkenlöschsysteme
vorgesehen sind, um induktive Spannungsspitzen des Elektromotors
abzubauen, diese Funkenlöschsysteme sind gleichzeitig wirksam,
um die elektrostatischen Spannungsspitzen zu vernichten.Electrostatic charges can form in the area of the intake manifold
via the
Auf diese Weise kann mit minimalem schaltungstechnischem Aufwand eine wirkungsvolle Ableitung der elektrostatischen Ladungen erreicht werden.In this way, a effective discharge of the electrostatic charges can be achieved.
Claims (3)
- Internal combustion engine having an intake pipe (10) with a throttle housing (12) mounted in an electrically insulated manner which incorporates a throttle control (14) adapted to be actuated via an electric motor (18), characterised in that between the body of the throttle housing (12) and at least one electric motor terminal (22) there is provided a connection (26) which dissipates electrical charges.
- Internal combustion engine according to claim 1, characterised in that the electric motor (18) has two terminals (20, 22) and each of the two terminals (20, 22) is connected electroconductively (26, 30) to the outer wall of the throttle housing (12).
- Internal combustion engine according to claim 1 or 2, characterised in that inserted in the electroconductive connection (26, 30) between the throttle housing's outer wall and the electric motor's terminal leads is a high-valued resistor (28, 32).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19508625A DE19508625C1 (en) | 1995-03-10 | 1995-03-10 | I.C. engine with electrostatic charge dissipation device |
DE19508625 | 1995-03-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0736682A2 EP0736682A2 (en) | 1996-10-09 |
EP0736682A3 EP0736682A3 (en) | 1997-10-08 |
EP0736682B1 true EP0736682B1 (en) | 2002-05-15 |
Family
ID=7756296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96103104A Expired - Lifetime EP0736682B1 (en) | 1995-03-10 | 1996-03-01 | Internal combustion engine with intake conduit made at least in part of plastics material |
Country Status (6)
Country | Link |
---|---|
US (1) | US5803430A (en) |
EP (1) | EP0736682B1 (en) |
JP (1) | JP3987134B2 (en) |
CN (1) | CN1069380C (en) |
DE (2) | DE19508625C1 (en) |
ES (1) | ES2173218T3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10152252A1 (en) | 2001-10-20 | 2003-04-30 | Bosch Gmbh Robert | Electronic circuit protection device |
ITBO20020358A1 (en) * | 2002-06-07 | 2003-12-09 | Magneti Marelli Powertrain Spa | BUTTERFLY VALVE FOR AN INTERNAL COMBUSTION ENGINE WITH ELECTROSTATIC CHARGE DISSIPATOR AND RELATED ACTUATOR |
DE102010007155A1 (en) | 2010-02-05 | 2011-08-11 | Continental Automotive GmbH, 30165 | Entstöranordnung an actuator with an electric motor |
DE102013224141A1 (en) * | 2013-11-26 | 2015-05-28 | Continental Automotive Gmbh | valve device |
JP6146405B2 (en) * | 2014-12-26 | 2017-06-14 | トヨタ自動車株式会社 | Engine and engine manufacturing method |
JP6933591B2 (en) * | 2018-02-23 | 2021-09-08 | 株式会社ミクニ | Throttle device and fuel evaporative emission recovery system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT970162B (en) * | 1971-11-05 | 1974-04-10 | Siemens Gmbh | SYSTEM AND DEVICE FOR COMMANDING THE DRYING PROCESS IN A TUMBLER OPERATING IF THE DRUM PRINCIPLE IS BASED |
US4629910A (en) * | 1982-04-21 | 1986-12-16 | At&T Bell Laboratories | High input impedance circuit |
JPH01232128A (en) * | 1988-03-11 | 1989-09-18 | Kiyousan Denki Kk | Throttle valve control device of engine |
JP3044719B2 (en) * | 1989-07-27 | 2000-05-22 | 三菱自動車工業株式会社 | Throttle valve control method |
US5255891A (en) * | 1991-04-29 | 1993-10-26 | Eaton Corporation | Electrically operated by-pass water valve |
DE4401585C2 (en) * | 1994-01-20 | 1998-10-29 | Mann & Hummel Filter | Throttle device |
-
1995
- 1995-03-10 DE DE19508625A patent/DE19508625C1/en not_active Expired - Fee Related
-
1996
- 1996-01-19 CN CN96104315A patent/CN1069380C/en not_active Expired - Lifetime
- 1996-03-01 ES ES96103104T patent/ES2173218T3/en not_active Expired - Lifetime
- 1996-03-01 EP EP96103104A patent/EP0736682B1/en not_active Expired - Lifetime
- 1996-03-01 DE DE59609202T patent/DE59609202D1/en not_active Expired - Lifetime
- 1996-03-05 JP JP04696296A patent/JP3987134B2/en not_active Expired - Fee Related
- 1996-03-08 US US08/612,688 patent/US5803430A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5803430A (en) | 1998-09-08 |
JP3987134B2 (en) | 2007-10-03 |
EP0736682A2 (en) | 1996-10-09 |
JPH08261020A (en) | 1996-10-08 |
DE59609202D1 (en) | 2002-06-20 |
ES2173218T3 (en) | 2002-10-16 |
CN1135571A (en) | 1996-11-13 |
DE19508625C1 (en) | 1996-06-05 |
CN1069380C (en) | 2001-08-08 |
EP0736682A3 (en) | 1997-10-08 |
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