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 PDF

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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
Application number
EP96103104A
Other languages
German (de)
French (fr)
Other versions
EP0736682A2 (en
EP0736682A3 (en
Inventor
Josef Büchl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
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.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of EP0736682A2 publication Critical patent/EP0736682A2/en
Publication of EP0736682A3 publication Critical patent/EP0736682A3/en
Application granted granted Critical
Publication of EP0736682B1 publication Critical patent/EP0736682B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 reference numeral 10, 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.

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 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.

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 throttle valve connector 12 and the feed lines 20, 22 to the electric motor 18 is an electrical connection 30 and 26 provided, the two connections each having a connection of the Connect the electric motor 18 to the throttle valve wall 12.

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 resistors 28 and 32 that are in electrical connection 26 and 30, respectively between throttle valve connector 12 and the electric motor connections 20, 22 are provided, ensure that the excitation current for the electric motor 18 is not short-circuited. The design of the resistors 28 and 32 is accordingly high impedance.

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 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.

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)

  1. 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.
  2. 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).
  3. 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).
EP96103104A 1995-03-10 1996-03-01 Internal combustion engine with intake conduit made at least in part of plastics material Expired - Lifetime EP0736682B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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