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1. WO2020088799 - ON BOARD DIAGNOSTIC METHOD FOR ELECTROMAGNETIC LATCH ASSEMBLY

Publication Number WO/2020/088799
Publication Date 07.05.2020
International Application No. PCT/EP2019/025371
International Filing Date 30.10.2019
IPC
F01L 13/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
F01L 1/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting-gear between valve drive and valve
18Rocking arms or levers
CPC
F01L 13/0005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0005Deactivating valves
F01L 13/0036
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0015for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
0036the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
F01L 2001/186
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
18Rocking arms or levers
186Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
F01L 2013/001
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0005Deactivating valves
001Deactivating cylinders
F01L 2305/00
F01L 2800/11
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2800Methods of operation using a variable valve timing mechanism
11Fault detection, diagnosis
Applicants
  • EATON INTELLIGENT POWER LIMITED [IE]/[IE]
Inventors
  • STRETCH, Dale Arden
  • T.R., Arjun
  • KANK, Amogh Vilas
Agents
  • BRP RENAUD & PARTNER MBB
Priority Data
62/753,87031.10.2018US
62/876,00119.07.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ON BOARD DIAGNOSTIC METHOD FOR ELECTROMAGNETIC LATCH ASSEMBLY
(FR) PROCÉDÉ DE DIAGNOSTIC EMBARQUÉ POUR ENSEMBLE VERROU ÉLECTROMAGNÉTIQUE
Abstract
(EN)
A method of providing diagnostic information for an electromagnetic latch assembly (122) includes providing a pulse to a circuit (200) that include one or more electromagnetic latch assemblies. The circuit (200) includes coils (199) of the electromagnetic latch assemblies. Each coil is inductively coupled with an armature (131) that is mechanically coupled to a latch pin (118). The circuit (200) is pulsed and a DC current in the circuit (200) that results from the pulse is measured over a first interval to determine a primary response. The current in the circuit (200) over a second interval is measured to determine a reference response. A second pulse may be used to generate the current for the reference response. The primary response and the reference response are compared to provide diagnostic information relating to position or movement of one or more of the latch pins (118).
(FR)
L'invention concerne un procédé de fourniture d'informations de diagnostic pour un ensemble verrou électromagnétique (122) consistant à fournir une impulsion à un circuit (200) qui comprend un ou plusieurs ensembles verrous électromagnétiques. Le circuit (200) comprend des bobines (199) des ensembles verrous électromagnétiques. Chaque bobine est couplée par induction à une armature (131) qui est couplée mécaniquement à une broche de verrouillage (118). Le circuit (200) est pulsé et un courant continu dans le circuit (200) qui résulte de l'impulsion est mesuré sur un premier intervalle pour déterminer une réponse primaire. Le courant dans le circuit (200) sur un second intervalle est mesuré pour déterminer une réponse de référence. Une seconde impulsion peut être utilisée pour générer le courant pour la réponse de référence. La réponse primaire et la réponse de référence sont comparées pour fournir des informations de diagnostic concernant la position ou le mouvement d'une ou de plusieurs des broches de verrouillage (118).
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