EP0767870B1 - Vorrichtung für eine brennkraftmaschine - Google Patents

Vorrichtung für eine brennkraftmaschine Download PDF

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Publication number
EP0767870B1
EP0767870B1 EP95935850A EP95935850A EP0767870B1 EP 0767870 B1 EP0767870 B1 EP 0767870B1 EP 95935850 A EP95935850 A EP 95935850A EP 95935850 A EP95935850 A EP 95935850A EP 0767870 B1 EP0767870 B1 EP 0767870B1
Authority
EP
European Patent Office
Prior art keywords
housing
internal combustion
control unit
throttle valve
throttle
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
EP95935850A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0767870A1 (de
Inventor
Willy Bentz
Waldemar Ernst
Peter Schiefer
Heiko Buss
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0767870A1 publication Critical patent/EP0767870A1/de
Application granted granted Critical
Publication of EP0767870B1 publication Critical patent/EP0767870B1/de
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
    • 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
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/18—Packaging of the electronic circuit in a casing
    • 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
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Definitions

  • the invention relates to a device for a Internal combustion engine according to the preamble of claim 1, or claim 2.
  • a Device known (EP-PS 0 317 813), which is a throttle body owns that in the form of a throttle valve in one Throttle body is rotatably housed.
  • Throttle valve actuator provided the throttle valve rotates via a reduction gear.
  • Such Devices driven by an electric motor are a component an electronic engine power control (EMS) for Internal combustion engines using an electronic control unit the accelerator pedal position detected by a pedal travel sensor Accelerator pedal evaluates to match the accelerator pedal position to control the electric throttle valve motor, so that the throttle valve assumes a certain rotational position.
  • EMS electronic engine power control
  • the electronic engine power control is in able to depend on the rotational position of the throttle valve various operating parameters of the internal combustion engine targeted change. Among other things, this enables one adjustable adjustment of the engine torque, so that a Implementation of a so-called traction control system (ASR) is possible.
  • ASR traction control system
  • the expressed by the accelerator pedal position Corrected driver's request so that when starting off a targeted withdrawal of the rotational position of the throttle valve a cranking of those driven by the internal combustion engine Wheels of a motor vehicle is prevented.
  • Electronic engine power control is part a higher-level electronic engine control system, that in addition to the main functions of mixture formation and electric ignition also the initiation of Fuel vapors by means of a regeneration valve in the Throttle body controls.
  • the regeneration valve is part of a fuel evaporation retention system Fuel tanks of the internal combustion engine, in which the For example, fuel vapors from a fuel tank initially cached in an adsorption filter and then by means of the regeneration valve in the Throttle body are introduced.
  • the engine control system requires a variety of Information about important company sizes of the Internal combustion engine provided by sensors and the electronic control unit can be fed for evaluation.
  • An important sensor is a so-called air mass meter, which is the air mass sucked in by the internal combustion engine Throttle valve connector determined.
  • the engine control system has several individual components, which are essentially that electronic control unit, the throttle body, the Throttle valve actuator, the regeneration valve and the Air mass meter include. These are individual components So far in individual housings, for example on the engine in the Engine interior or in the passenger compartment of the motor vehicle individually housed so that to connect the Individual components, especially with the electronic Control unit, a variety of electrical connection lines and plug connections is required.
  • the device according to the invention for an internal combustion engine with the characterizing features of claim 1 or of claim 2 has the other hand Advantage that a compact component is created, the is inexpensive to manufacture and in particular as prefabricated and pre-tested unit in a simple way and is attachable to the motor vehicle. Advantageously results from the elimination of the otherwise customary individual housings and their electrical connection lines and electrical connectors a further cost saving. In addition, due to the reduced number of electrical Connection lines and electrical connectors Operational safety and reliability of the device elevated.
  • FIG. 1 shows a perspective view of a device according to a first embodiment of the invention
  • Figure 2 a Side view of the device of Figure 1
  • Figure 3 a perspective view of the device according to a second embodiment of the invention
  • Figure 4 a Side view of the device according to FIG. 3.
  • FIGS. 1 to 4 one is labeled 1 Device shown as a functional unit part an electronic engine power control (EMS) parent engine control system for a no closer internal combustion engine shown.
  • the device 1 is for use especially for mix-compacting, spark ignition internal combustion engines provided.
  • the Device 1 essentially comprises a throttle element 2, an electric throttle valve actuator 3, a electronic control unit 4, a regeneration valve 5 and / or an air mass meter 20.
  • the regeneration valve 5 is part of a fuel evaporation retention system
  • Fuel tanks of the internal combustion engine, its structure and Function is like that of the Bosch Technical Instruction, Motronic engine management, 2nd edition, August 1993, on pages 48 and 49. The revelation The above-mentioned document should form part of the present Be registration.
  • the device 1 has a housing 10 which, for example, consists of Plastic or aluminum, for example in Casting technology is manufactured.
  • the device 1, or the housing 10 has a tubular, elongated shape, essentially of a Throttle body 11 is formed.
  • the Throttle body 11 has on one of the internal combustion engine facing end portion a flange 12, the for example, has a cuboid shape.
  • the throttle body 2 is in the throttle body 11 in particular Flange part 12 rotatably housed and for example the shape of a dashed in Figures 1 to 4 shown throttle valve 2.
  • Inside the Throttle body 11 flows a gaseous medium, in particular the air drawn in by the internal combustion engine, for example via a not shown Air filter in the throttle valve assembly 11 in FIGS.
  • the flange part 12 also serves Attachment of the device 1, for example in the area a cylinder head of the internal combustion engine. For this are on Flange part 12, for example, excluding four openings 17, into which screws to screw the device 1 can be introduced.
  • the engine power of the internal combustion engine is known to be by turning the throttle valve 2 in the throttle valve connector 11 controlled so that more or less air at the Throttle valve 2 flows past.
  • the throttled air will by means of at least one fuel injector Fuel admixed to form a fuel-air mixture received, which then in the combustion chambers of the Internal combustion engine burns.
  • the electric throttle valve servomotor 3 is provided, the one in the energized state, for example, over a Reduction gear one with the throttle valve 2 connected throttle valve shaft 14 drives.
  • the control the throttle valve motor 3 takes place by means of electronic control unit 4, for example with a Pedal travel sensor is connected.
  • the pedal travel sensor detects the expressed by the accelerator pedal position of an accelerator pedal Driver request for engine power and transmits this in the form electrical signals to the electronic control unit 4.
  • Das electronic control unit 4 then operates the electric throttle valve actuator 3 so that Throttle valve 2 a specific, the driver's request corresponding and to the operating parameters of Adjusted internal combustion engine occupies.
  • a opposite the throttle valve actuator 3 on Flanged part 12 trained and on the throttle valve shaft 14 attacking reset device 27 ensures that there is a failure of the throttle valve motor 3rd always reset the throttle valve 2, for example in a given idle or Shut-off position comes.
  • EMS electronic engine power control
  • Throttle valve motor 3 takes over the electronic Control unit 4 still extensive functions parent electronic engine control.
  • the electronic engine control controls next to the Main functions of mixture formation and electrical Ignition among other things also in terms of quantity and timing limited introduction of fuel vapors using the Regeneration valve 5.
  • the regeneration valve 5 is part of a A fuel evaporation retention system Fuel tanks of the internal combustion engine, for example an adsorption filter for intermediate storage of the Has fuel tank outgassing fuel vapors this only in certain operating areas of the Internal combustion engine via the regeneration valve 5 in the Initiate throttle body 11.
  • the electronic Control unit 4 of the engine control system requires one Plenty of information on key company sizes Internal combustion engine provided by sensors and supplied to the electronic control unit 4 for evaluation become.
  • the air mass meter 20 is an important sensor represents the in the throttle valve 11 of the Internal combustion engine air mass determined.
  • the electrical Throttle valve actuator 3 an elongated cylindrical Shape.
  • the throttle valve servomotor 3 is in one correspondingly cylindrical motor housing part 15 housed the part of the housing 10 of the device 1 is.
  • the motor housing part 15 extends on the flange part 12 across the throttle valve neck 11 and goes in one piece a box-shaped housing part 16 of the housing 10 over.
  • FIG. 2 a side view of the device 1, is shown, houses the box-shaped housing part 16 several components, at least the electronic control unit 4, the throttle valve servomotor 3 and a plug connector 22.
  • the main component of the electronic control unit 4 is a Substrate 21 on which a large number of electrical components, for example, are applied in hybrid construction.
  • the substrate 21 is box-shaped Housing part 16 in close proximity to the throttle valve connector 11 housed in good thermal contact during operation the control unit 4 heat generated by the in Discharge throttle valve 11 flowing air.
  • the box-shaped Housing part 16 of an attachable closure cover 18th tightly sealable so that no water, contaminants or the like penetrate into the box-shaped housing part 16 can.
  • the cover 18 saves the for example, connector strip 22 held on substrate 21 from, for example, with the cover 18 on something can protrude from the cover 18. The better For the sake of clarity, the closure cover 18 in FIGS. 2 and 4 not shown.
  • the power strip 22 is also possible to use the power strip 22 to attach to the cover 18 or in this integrate and for the electrical connection of the Plug connector 22 with the substrate 21, for example provide flexible, multi-core cable tie.
  • the electrical cable is used to manufacture electrical components its one end on a side facing the substrate 21 of the cover 18 with the power strip 21 electrically connected and with its other end to the electrical Components of the substrate 21 out.
  • this is Regeneration valve 5, for example by means of an Throttle body 11 attached bracket 19 on Throttle body 11 attached.
  • the regeneration valve 5 is via a hose line, not shown for example with the adsorption filter Fuel evaporation retention system of the fuel tank connected to the internal combustion engine.
  • the regeneration valve 5 conducts the hose line 23 visible in FIG Fuel vapors of the fuel tank in a metered manner the throttle body 11 preferably downstream of the Throttle valve 2 on.
  • the regeneration valve 5 is trained electromagnetically actuated and has one Structure, which can be found, for example, in DE-OS 40 23 044 and is therefore not described in more detail below.
  • the regeneration valve 5 is from the electronic control unit 4 controllable, for which this via a not shown electrical connector, for example, via the connector strip 22 electrically connected to the electronic control unit 4 is.
  • the device 1 with the Air mass meter 20 may be equipped.
  • the air mass meter 20 has a removable, for example, DE-OS 38 44 354 Structure and has an elongated shape.
  • the Air mass meter 20 is, for example, approximately in the middle of the elongated extension of the throttle valve body 11 in a Forming 25 on the throttle valve assembly 11, for example inserted and protrudes with his shown in Figure 3 Measuring part 26 approximately in the middle of the throttle body 11 limited flow cross-section to the through the Air mass flowing through the flow cross-section determine.
  • the connecting line is the air mass meter 20 for example via the connector strip 22 with the electronic control unit 4 connected.
  • a common housing 10 By housing several according to the invention Components in or on a common housing 10, in particular the throttle body 2, the electronic Control unit 4 and the regeneration valve 5 and the Air mass meter 20, becomes a compact unit created the functions of several individual components in advantageously in a common unit integrated.
  • the device 1 is complete in pre-assembly producible and testable, so that for final assembly on the Internal combustion engine, for example, only that Screw connection must be attached to the cylinder head.
  • FIGS. 3 and 4 show a second one according to the invention Embodiment shown, in which all the same or equivalent parts with the same reference numerals of first exemplary embodiment according to FIGS. 1 and 2 Marked are.
  • the regeneration valve 5 is not an exemplary embodiment a bracket 19 attached to the throttle valve 11, but in the box-shaped housing part 16 at the bottom 24 thereof housed, for example by means of a clip or a locking connection.
  • the placement of the Regeneration valve 5 is so in the box-shaped housing part 16 provided that a direct through an opening in the bottom 24 Introduction of fuel vapors downstream of the Throttle valve 2 takes place in the throttle valve connector 11, advantageously in the first embodiment Hose connection 23 shown in FIG. 2 can be omitted.
  • Air mass meter 20 also in the box-shaped housing part 16 can be accommodated. Part of the protrudes Air mass measuring body through an opening in the bottom 24 of the box-shaped housing part 16 in the flow cross section of the throttle body 11.
  • Air mass meter 20 shown as a circle protrudes as in first embodiment of Figure 1 with its measuring part 26 for example in the middle of the Throttle body 11 limited flow cross-section.
  • the common accommodation of the regeneration valve 5 and Air mass meter 20 in the box-shaped housing part 16 enables a particularly simple design of the electrical connection paths, in particular to electronic control unit 4.
  • the electrical connection can, for example, by being applied to the substrate 21
  • Conductor tracks are made, for example, by means of soldering Regeneration valve 5 and the air mass meter 20 over the Conductor tracks with the electronic components on the Electrically connect the substrate 21 of the control device 4, whereby otherwise usual plugs with electrical connection lines can be omitted.

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  • 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)
EP95935850A 1994-12-07 1995-11-07 Vorrichtung für eine brennkraftmaschine Expired - Lifetime EP0767870B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4443502 1994-12-07
DE4443502A DE4443502A1 (de) 1994-12-07 1994-12-07 Vorrichtung für eine Brennkraftmaschine
PCT/DE1995/001534 WO1996018028A1 (de) 1994-12-07 1995-11-07 Vorrichtung für eine brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0767870A1 EP0767870A1 (de) 1997-04-16
EP0767870B1 true EP0767870B1 (de) 1999-08-04

Family

ID=6535122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95935850A Expired - Lifetime EP0767870B1 (de) 1994-12-07 1995-11-07 Vorrichtung für eine brennkraftmaschine

Country Status (9)

Country Link
US (1) US5718202A (ru)
EP (1) EP0767870B1 (ru)
JP (1) JPH09508954A (ru)
KR (1) KR970700817A (ru)
CN (1) CN1067140C (ru)
DE (2) DE4443502A1 (ru)
RU (1) RU2140555C1 (ru)
TW (1) TW285699B (ru)
WO (1) WO1996018028A1 (ru)

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DE4023044A1 (de) * 1990-07-20 1992-01-23 Bosch Gmbh Robert Ventil zum dosierten zumischen von verfluechtigtem kraftstoff zum kraftstoffluftgemisch einer brennkraftmaschine

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US5718202A (en) 1998-02-17
JPH09508954A (ja) 1997-09-09
DE59506537D1 (de) 1999-09-09
CN1137820A (zh) 1996-12-11
WO1996018028A1 (de) 1996-06-13
TW285699B (ru) 1996-09-11
DE4443502A1 (de) 1996-06-13
KR970700817A (ko) 1997-02-12
CN1067140C (zh) 2001-06-13
EP0767870A1 (de) 1997-04-16
RU2140555C1 (ru) 1999-10-27

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