WO2008024562A2 - Solénoïde à force variable avec capteur de position intégré - Google Patents

Solénoïde à force variable avec capteur de position intégré Download PDF

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Publication number
WO2008024562A2
WO2008024562A2 PCT/US2007/072909 US2007072909W WO2008024562A2 WO 2008024562 A2 WO2008024562 A2 WO 2008024562A2 US 2007072909 W US2007072909 W US 2007072909W WO 2008024562 A2 WO2008024562 A2 WO 2008024562A2
Authority
WO
WIPO (PCT)
Prior art keywords
position sensor
phaser
housing
integrated position
sensor
Prior art date
Application number
PCT/US2007/072909
Other languages
English (en)
Other versions
WO2008024562A3 (fr
Inventor
Roger T. Simpson
Danny R. Taylor
Original Assignee
Borgwarner Inc
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 Borgwarner Inc filed Critical Borgwarner Inc
Priority to JP2009525670A priority Critical patent/JP2010501779A/ja
Priority to US12/377,035 priority patent/US20110048350A1/en
Priority to DE112007001854T priority patent/DE112007001854T5/de
Publication of WO2008024562A2 publication Critical patent/WO2008024562A2/fr
Publication of WO2008024562A3 publication Critical patent/WO2008024562A3/fr

Links

Classifications

    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/04—Sensors
    • F01L2820/041—Camshafts position or phase sensors

Definitions

  • the invention pertains to the field of variable force solenoids. More particularly, the invention pertains to a variable force solenoid with an integrated position sensor.
  • Modern engines have variable cam timing phasers mounted to one or more cams on the engine. These phasers can be used to change the timing of the valves or can be used to vary the duration of the valves depending on the cam and lifter arrangement.
  • One method to adjust the position of the phaser is to use a center mounted spool controlled by a variable force solenoid (VFS) and have a separate position sensor to provide feedback to the electronic controller to adjust its position. Therefore on a four cam engine, there are four connectors for the variable force solenoid and four connectors for each of the associated sensors, resulting in eight locations for oil to leak out of the engine.
  • VFS variable force solenoid
  • a variable cam timing phaser for an internal combustion engine having at least one camshaft comprising a housing, a rotor, a control valve, an actuator, and a pulse wheel.
  • the housing has an outer circumference for accepting drive force.
  • the rotor connects to a camshaft coaxially located within the housing.
  • the housing and the rotor define at least one vane separating a chamber in the housing.
  • the vane is capable of rotation to shift the relative angular position of the housing and the rotor.
  • the control valve is received by the rotor and directs fluid to the chambers of the phaser.
  • the actuator positions the control valve and has at least one integrated position sensor, such that electrical connections for the actuator and the integrated position sensor are made through one connection, decreasing leakage of fluid from the phaser.
  • a pulse wheel is mounted on the phaser for rotation therewith and in alignment with the integrated position sensor of the actuator.
  • the pulse wheel is magnetic and the integrated position sensor detects the change in flux as the edge of the pulse wheel passes the sensor.
  • the pulse wheel is ferrous and the integrated position sensor contains a magnet.
  • the integrated position sensor detects the changes in magnetic field as the edge of the pulse wheel passes the sensor.
  • Fig. 1 shows a side view of a variable cam timing phaser actuated by a variable force solenoid with an integrated position sensor.
  • Fig. 2 shows a front view of the variable cam timing phaser.
  • Fig. 3 shows a front view of the connector and the variable force solenoid including the integrated position sensor.
  • Fig. 4 shows an alternate embodiment. DETAILED DESCRIPTION OF THE INVENTION
  • variable camshaft timing (VCT) mechanism use one or more "vane phasers" on the engine camshaft 26 (or camshafts, in a multiple-camshaft engine).
  • VCT variable camshaft timing
  • the phasers have a rotor 6 with one or more vanes, mounted to the end of the camshaft 26, surrounded by a housing 2 with the vane chambers into which the vanes fit. It is possible to have the vanes mounted to the housing 2, and the chambers in the rotor 6, as well.
  • the housing's outer circumference forms the sprocket 4, pulley or gear accepting drive force through a chain, belt, or gears, usually from the crankshaft, or possible from another camshaft in a multiple-cam engine.
  • the rotor 6 has a bore 6a that receives a control valve 8.
  • the control valve 8 directs fluid flow to shift the relative angular position of the rotor 6 relative to the housing 2.
  • the position of the control valve 8 is influenced by an actuator 12 on one end and a spring (not shown) on the opposite end.
  • the actuator 12 as shown in Figure 1 is a variable force solenoid, although other actuators such as a stepper motor assembly with integral position sensor, or any actuator with linear motion may be used.
  • multiple separate position sensors provide feedback to the electronic controller regarding the position of the camshaft relative to the crankshaft and the position of the phaser. In turn the feedback is sent from the electronic controller to the variable force solenoid, which influences the position of the control valve and the phaser.
  • the multiple position sensors of the prior art phasers require multiple connectors and connections between the position sensors and the electronic controller and the variable force solenoid.
  • the position sensor 14 of the phaser of the present invention is integrated into the variable force solenoid (VFS) 12, such that the electrical connections for the solenoid 12 and the position sensor 14 are made through one connector 16. Due to the magnetic flux and magnetic pathways associated with the variable force solenoid 12, the position sensor 16 must be isolated from such magnetic pathways of the VFS 12 as shown in Figures 1 and 3.
  • the position sensors 14 may be Hall sensors, magneto resistive sensors, variable reluctance sensors, or any other sensor that can sense a pulse wheel. However, through testing, Hall sensors and magneto resistive sensors perform better than the variable reluctance sensors. While only one position sensor is shown, multiple sensors may be present and may sense the position of the housing or monitoring other parts of the phaser.
  • a magnetic pulse wheel 10 may be used.
  • the pulse wheel 10 is attached to the camshaft and rotates with the phaser.
  • the pulse wheel is positioned such that an edge 10a of the pulse wheel is aligned with the position sensor 14, integrated into the variable force solenoid 12. As the edge 10a of the pulse wheel passes by the sensor 14, the sensor may detect the change in flux and thus the position of the camshaft.
  • the pulse wheel 10 may be ferrous and the position sensor 14 may contain a magnet, so that the position sensor can detect the changes in the magnetic field as the ferrous pulse wheel passes by.
  • a rubber ring 30 may replace the pulse wheel.
  • the rubber ring 30 would be attached to the camshaft and rotate with the phaser.
  • the rubber ring, as shown in Figure 4 has magnets 32 interspersed at intervals along its rubber 34 circumference, so that when the magnet 32 pass the position sensor 14, the sensor 14 would be able to detect the changes in the magnetic field as the magnets 32 in the rubber ring rotates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un modulateur de phase pour un moteur ayant au moins un arbre à cames comprenant un carter, un rotor, une soupape de commande, un actionneur et une roue à impulsions. Le rotor se relie à un arbre à cames situé à l'intérieur du carter. Le carter et le rotor définissent au moins une aube séparant une chambre dans le carter. L'aube est capable de tourner pour décaler la position angulaire relative du carter et du rotor. La soupape de commande est reçue par le rotor et dirige du fluide vers les chambres du modulateur de phase. L'actionneur positionne la soupape de commande et comporte au moins un capteur de position intégré, de telle sorte que des connexions électriques pour l'actionneur et le capteur de position intégré sont réalisées par une connexion, diminuant la fuite de fluide à partir du modulateur de phase. Une roue à impulsions est montée sur le modulateur de phase pour une rotation avec celui-ci et en alignement avec le capteur de position intégré de l'actionneur.
PCT/US2007/072909 2006-08-25 2007-07-06 Solénoïde à force variable avec capteur de position intégré WO2008024562A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009525670A JP2010501779A (ja) 2006-08-25 2007-07-06 位置センサ一体型可変力ソレノイド
US12/377,035 US20110048350A1 (en) 2006-08-25 2007-07-06 Variable force solenoid with integrated position sensor
DE112007001854T DE112007001854T5 (de) 2006-08-25 2007-07-06 VFS (Variable forche solenoid - Solenoid mit variabler Kraft) mit integriertem Positionssensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82352906P 2006-08-25 2006-08-25
US60/823,529 2006-08-25

Publications (2)

Publication Number Publication Date
WO2008024562A2 true WO2008024562A2 (fr) 2008-02-28
WO2008024562A3 WO2008024562A3 (fr) 2008-12-31

Family

ID=39107489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/072909 WO2008024562A2 (fr) 2006-08-25 2007-07-06 Solénoïde à force variable avec capteur de position intégré

Country Status (5)

Country Link
US (1) US20110048350A1 (fr)
JP (1) JP2010501779A (fr)
CN (1) CN101506478A (fr)
DE (1) DE112007001854T5 (fr)
WO (1) WO2008024562A2 (fr)

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FR3051835B1 (fr) * 2016-05-27 2018-05-11 Sonceboz Automotive Sa Dephaseur d'arbre a cames electrique a arbre unique
US11181016B2 (en) 2019-02-08 2021-11-23 Honda Motor Co., Ltd. Systems and methods for a crank sensor having multiple sensors and a magnetic element
US11199426B2 (en) 2019-02-08 2021-12-14 Honda Motor Co., Ltd. Systems and methods for crankshaft tooth encoding
US11131567B2 (en) 2019-02-08 2021-09-28 Honda Motor Co., Ltd. Systems and methods for error detection in crankshaft tooth encoding
US11162444B2 (en) 2019-02-08 2021-11-02 Honda Motor Co., Ltd. Systems and methods for a crank sensor having multiple sensors and a magnetic element
US11959820B2 (en) 2021-03-17 2024-04-16 Honda Motor Co., Ltd. Pulser plate balancing
US20230050408A1 (en) * 2021-08-12 2023-02-16 Husco Automotive Holdings Llc Cam Phase Actuator Control Systems and Methods
US12098661B2 (en) 2022-11-02 2024-09-24 Husco Automotive Holdings Llc Cam phase actuator control systems and methods

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US6571757B1 (en) * 2002-04-22 2003-06-03 Borgwarner Inc. Variable force solenoid with spool position feedback to control the position of a center mounted spool valve to control the phase angle of cam mounted phaser
EP1357261A2 (fr) * 2002-04-22 2003-10-29 BorgWarner Inc. Soupape de régulation de pression située dans le déphaseur pour réduire la longueur axiale du moteur
EP1455057A1 (fr) * 2003-03-05 2004-09-08 Delphi Technologies, Inc. Méthode et dispositif pour contrôler un dispositif variable de commande de soupape
US20050072391A1 (en) * 2003-10-06 2005-04-07 Borgwarner Inc. VCT sensor and actuator module
WO2006069156A1 (fr) * 2004-12-22 2006-06-29 Borgwarner Inc. Systeme de synchronisation variable des cames utilisant un ensemble de procedes de gestion optimale des structures variables

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US6571757B1 (en) * 2002-04-22 2003-06-03 Borgwarner Inc. Variable force solenoid with spool position feedback to control the position of a center mounted spool valve to control the phase angle of cam mounted phaser
EP1357261A2 (fr) * 2002-04-22 2003-10-29 BorgWarner Inc. Soupape de régulation de pression située dans le déphaseur pour réduire la longueur axiale du moteur
EP1455057A1 (fr) * 2003-03-05 2004-09-08 Delphi Technologies, Inc. Méthode et dispositif pour contrôler un dispositif variable de commande de soupape
US20050072391A1 (en) * 2003-10-06 2005-04-07 Borgwarner Inc. VCT sensor and actuator module
WO2006069156A1 (fr) * 2004-12-22 2006-06-29 Borgwarner Inc. Systeme de synchronisation variable des cames utilisant un ensemble de procedes de gestion optimale des structures variables

Also Published As

Publication number Publication date
DE112007001854T5 (de) 2009-07-02
CN101506478A (zh) 2009-08-12
JP2010501779A (ja) 2010-01-21
WO2008024562A3 (fr) 2008-12-31
US20110048350A1 (en) 2011-03-03

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