EP 0952318 A2 19991027 - Apparatus and method for driving a valve with a stepping motor
Title (en)
Apparatus and method for driving a valve with a stepping motor
Title (de)
Vorrichtung und Verfahren zum Antrieb eines Ventils mittels eines Schrittmotors
Title (fr)
Dispositif et méthode pour entraîner une soupape a l'aide d'un moteur pas à pas
Publication
Application
Priority
JP 10664698 A 19980416
Abstract (en)
An apparatus for driving a throttle valve (4) with a stepping motor (40) in a diesel engine (1). The apparatus includes a fully open detection switch (39) that is shifted between ON/OFF states by motion of the valve (4) when the valve (39) moves near a fully open position. An ECU (19) initializes a relationship between the driven step number of the stepping motor (40) and the angular position of the throttle valve (4) by setting a reference angle of the stepping motor (40) only when the fully open switch (39) shifts from an OFF state to an ON state, not vice versa. Thus, the reference rotational angle of the stepping motor (40), which corresponds to the fully open position of the throttle valve (4), is located accurately regardless of hysteresis errors that occur when the fully open switch (39) shifts between ON/OFF states. Accordingly, the angular position of the throttle valve (4) is controlled more precisely. <IMAGE>
IPC 1-7
IPC 8 full level
F02D 9/02 (2006.01); F02D 11/10 (2006.01); F02D 41/20 (2006.01); F02D 41/38 (2006.01); H02P 8/00 (2006.01)
CPC (source: EP)
F02D 11/105 (2013.01); F02D 41/38 (2013.01); F02D 2011/102 (2013.01); F02D 2011/104 (2013.01); F02D 2041/0022 (2013.01); F02D 2250/16 (2013.01)
Citation (applicant)
JP H0357852 A 19910313 - HONDA MOTOR CO LTD
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0952318 A2 19991027; EP 0952318 A3 20011024; JP 3288007 B2 20020604; JP H11294197 A 19991026
DOCDB simple family (application)
EP 99107547 A 19990415; JP 10664698 A 19980416