WO2002040902A2 - Soupape de moteur a actionnement direct - Google Patents

Soupape de moteur a actionnement direct Download PDF

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Publication number
WO2002040902A2
WO2002040902A2 PCT/IB2001/002186 IB0102186W WO0240902A2 WO 2002040902 A2 WO2002040902 A2 WO 2002040902A2 IB 0102186 W IB0102186 W IB 0102186W WO 0240902 A2 WO0240902 A2 WO 0240902A2
Authority
WO
WIPO (PCT)
Prior art keywords
engine valve
electric motor
engine
recited
threaded
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.)
Ceased
Application number
PCT/IB2001/002186
Other languages
English (en)
Other versions
WO2002040902A3 (fr
Inventor
John Curtis
Larry Hiltunen
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.)
Siemens Automotive Corp
Siemens Automotive LP
Aumovio Systems Inc
Original Assignee
Siemens Automotive Corp
Siemens Automotive LP
Siemens VDO Automotive Corp
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 Siemens Automotive Corp, Siemens Automotive LP, Siemens VDO Automotive Corp filed Critical Siemens Automotive Corp
Publication of WO2002040902A2 publication Critical patent/WO2002040902A2/fr
Publication of WO2002040902A3 publication Critical patent/WO2002040902A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/22—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by rotary motors

Definitions

  • the present invention relates to engine valves, and more particularly to actuation of engine valves.
  • Engine intake and/or exhaust valves are used to control the intake and exhaust in the cylinders of internal combustion engines.
  • Camshafts that provide a valve motion profile as a fixed function of the crankshaft position commonly control the valves. While generally effective, ideal intake and exhaust valve timing and lift will vary under varying engine operating conditions . Variable valve timing and lift can account for such changing conditions and substantially improve overall engine performance.
  • the engine valve assembly provides an engine valve driven by an electric motor.
  • each engine valve is individually controllable.
  • variable valve timing and variable opening and closing profiles for each of a plurality valves is relatively straightforwardly achieved through a controller.
  • the electric motor is a linear electric motor which may include "rare earth” magnets.
  • a slidable rotor is fixed to a valve stem of the engine valve such that as the slidable rotor is driven relative to a linear stator, the engine valve is infinitely movable between an open and closed position. Usage of "rare earth” magnets assures that the linear electric motor generates enough force to properly and timely operate the engine valve.
  • the electric motor drives a threaded portion of the valve stem. Operation of the electric motor rotates the threaded stem relative to a threaded support. The engine valve is thereby screwed between an open and a closed position.
  • the present invention therefore provides a reliable, fast and efficient engine valve actuator which provides the flexibility to vary both valve timing and lift to substantially improve engine performance.
  • Figure 1 is a partial sectional view of an engine valve assembly according to the present invention
  • Figure 2 is a partial sectional view of the engine valve assembly of Figure 1 in a closed position
  • Figure 1A is an exploded view of another linearly actuated engine valve assembly according to the present invention.
  • Figure 3 A is a partial sectional view of another engine valve assembly according to the present invention
  • Figure 3B is an exploded view of another rotational engine valve assembly according to the present invention
  • Figure 4 is a partial sectional view of the engine valve assembly of Figure 3 in a closed position; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Figure 1 illustrates a general partial sectional view of an engine valve assembly 10.
  • An engine valve 12 such as an intake or exhaust valve, is movably mounted within a cylinder head 14 of an internal combustion engine 16.
  • the engine valve 12 includes a valve stem 18 and a valve head 20.
  • the valve stem 18 defines an axis A.
  • the engine valve 12 is movably mounted within a support 22 such that the valve head 20 is movable along axis A.
  • the support 22 provides for assembly of components into the cylinder head 14, and later servicing as a module, but may alternatively be integral with the head.
  • the valve head 20 seats against a valve seat 24 to control flow through a port 26 into or out of a combustion chamber 28 within the engine 16.
  • the valve stem 18 is connected to an electric motor 30.
  • the electric motor 30 communicates with a controller (illustrated schematically at 32) to drive the engine valve between an open and a closed position ( Figure 2).
  • a controller illustrated schematically at 32
  • each engine valve 12 is individually controllable.
  • variable valve timing and variable opening and closing profiles for each of a plurality valves is relatively straightforwardly achieved through controller 32.
  • the electric motor 30 is a linear electric motor 34 mounted along axis A.
  • the linear electric motor 34 includes a linear stator 36 and a slidable rotor 38 which is drivable relative to the linear stator 34. Some rotational motion between the engine valve 12 and the slidable rotor 38 such as through a sleeve type mount is preferably provided to allow rotation of the valve during opening and closing to thereby equalize wear upon the valve head 20 and valve seat 24.
  • the linear stator 36 preferably includes "rare earth" magnets 40 such as Neodymium and Samarium Cobalt magnets.
  • a linear electric motor Generally, the slidable rotor 38 is fixed to the valve stem 18 such that as the slidable rotor 38 is driven relative to the linear stator 34, the engine valve is infinitely movable between the open and closed position. Usage of "rare earth" magnets 40 assures that the linear electric motor 34 generates enough force to properly and timely operate the engine valve 12. In addition, as the linear electric motor 34 is sequentially actuated, an extremely large inductance is avoided. Avoidance of a large inductance further increases the responsiveness of the linear electric motor 34 and thus the engine valve 12.
  • a housing 35 or the like is mounted to the cylinder head 14 to protect and provide maintenance access to the electric motor 34. It should be understood that other arrangements will also benefit from the present invention.
  • a "force multiplier" such as a rack and pinion arrangement may alternatively or additionally be located between the valve stem 18a and the linear electric motor 34a. That is, the slidable rotor 38a includes a rack gear 39 which rotates a gear reduction arrangement 41 which correspondingly drives a stem rack gear 43 formed on the valve stem 18 a. The force of the linear motor is thereby multiplied to further assure that the linear electric motor 34a generates enough force to properly and timely operate the engine valve 12.
  • FIG. 3 another engine valve assembly 10' according to the present invention is illustrated.
  • the engine valve assembly 10 ' is generally as described above and common items are defined by the same numerals as above.
  • the engine valve assembly 10' includes a threaded support 40 to receive a threaded portion 42 of the valve stem 18. Preferably, one-quarter turn of the valve stem 18 drives the engine valve 12 between an open and a closed ( Figure 4).
  • the electric motor 44 is mounted substantially perpendicular to the valve stem 18 such that a screw gear 46 attached to the electric motor rotor 48 engages the threaded portion 42. Operation of the electric motor 44 drives the engine valve 12 between an open and a closed ( Figure 4).
  • the electric motor 44 includes a low-inertial permanent magnet or "squirrel cage” armature motor (illustrated schematically at 50) to properly and timely operate the engine valve 12.
  • the electric motor 44 additionally or alternatively includes "rare earth” magnets as described above. It should be understood that other actuators such as a rotary solenoid will also benefit from the present invention.
  • FIG. 3 A other rotational motor arrangements in which the engine valve 12b is directly coupled to a rotor 52 which rotates within a fixed stator 54.
  • the engine valve 12b includes a threaded portion 56 which meshes with a corresponding rotor thread 58 on the rotor 52.
  • a guide 60 such as a key and slot arrangement prevents rotation of the engine valve 12b. Rotation of the rotor 52 thereby causes the rotor thread 56 to act upon the threaded portion 58 of the engine valve and drive the engine valve 12 between an open and a closed position. That is as the engine valve can not rotate interaction of the threads 56, 58 result in linear motion of the engine valve 12b.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Un ensemble soupape de moteur comprend une soupape (12) de moteur reliée à un moteur électrique (30). Le moteur électrique peut être un moteur électrique linéaire (30) comprenant des aimants à 'terres rares' destinés à actionner de façon infinie la soupape (12) d'un moteur entre une position ouverte et une position fermée. L'utilisation d'aimants à 'terres rares' assure que le moteur électrique linéaire (34) génère suffisamment de force pour faire fonctionner correctement et en synchronisation la soupape (12) du moteur. Le moteur électrique (30) peut également entraîner une partie filetée (42) de la tige (18) de soupape. Le fonctionnement du moteur électrique (30) visse la tige (18) de soupape filetée par rapport à un support fileté (40) afin d'entraîner la soupape (12') du moteur entre une position ouverte et une position fermée.
PCT/IB2001/002186 2000-11-20 2001-11-20 Soupape de moteur a actionnement direct Ceased WO2002040902A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25211900P 2000-11-20 2000-11-20
US60/252,119 2000-11-20

Publications (2)

Publication Number Publication Date
WO2002040902A2 true WO2002040902A2 (fr) 2002-05-23
WO2002040902A3 WO2002040902A3 (fr) 2003-01-03

Family

ID=22954687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/002186 Ceased WO2002040902A2 (fr) 2000-11-20 2001-11-20 Soupape de moteur a actionnement direct

Country Status (2)

Country Link
US (1) US20020066427A1 (fr)
WO (1) WO2002040902A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7086636B2 (en) * 2002-07-02 2006-08-08 Borgwarner Inc. Gaseous fluid metering valve
KR20070108948A (ko) 2005-03-08 2007-11-13 보르그워너 인코퍼레이티드 대기 위치를 갖는 ｅｇｒ 밸브
FR2917119B1 (fr) * 2007-06-11 2014-07-11 Valeo Sys Controle Moteur Sas Ensemble d'une soupape de moteur a combustion interne sans arbre a cames et d'un actionneur
RU2369751C1 (ru) * 2008-02-18 2009-10-10 ГОУВПО Кубанский государственный технологический университет Привод клапана конструкции соколова
US20180012692A9 (en) * 2015-02-12 2018-01-11 Eaton Corporation Multi-piece armature and solenoid with amplified stroke
CN105822378B (zh) * 2016-05-12 2018-02-06 宁波工程学院 一种具有半月形头部的电动进气门机构
CN111577469A (zh) * 2020-06-11 2020-08-25 汉腾新能源汽车科技有限公司 一种发动机配气控制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1019565A (fr) * 1950-06-06 1953-01-23 S E B R O Commande des soupapes des moteurs thermiques
DE2458635A1 (de) * 1974-12-11 1976-06-16 Wolf Klemm Vorrichtung zur steuerung von ventilen
DE2754624A1 (de) * 1977-12-08 1979-06-13 Maschf Augsburg Nuernberg Ag Vorrichtung zum steuerbaren antreiben von ventilen
GB2129626A (en) * 1982-10-12 1984-05-16 Dimitri Egoroff An electromagnetic shuttle device
US5327856A (en) * 1992-12-22 1994-07-12 General Motors Corporation Method and apparatus for electrically driving engine valves
US5873335A (en) * 1998-01-09 1999-02-23 Siemens Automotive Corporation Engine valve actuation control system

Also Published As

Publication number Publication date
WO2002040902A3 (fr) 2003-01-03
US20020066427A1 (en) 2002-06-06

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