US 11,719,264 B2
Method for ascertaining the movement of an armature of an electric intake valve
Bernd Becker, Remseck A. N. (DE); Enrique Naupari, Kernen I. R. (DE); Gerald Gehmlich, Weinstadt (DE); Manuel Gil, Esslingen (DE); Sascha-Juan Moran Auth, Esslingen (DE); and Jonas Hardt, Stuttgart (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Jan. 14, 2020, as Appl. No. 16/742,411.
Claims priority of application No. 102019200572.1 (DE), filed on Jan. 17, 2019.
Prior Publication US 2020/0232487 A1, Jul. 23, 2020
Int. Cl. F15B 19/00 (2006.01); F16K 31/02 (2006.01); F16K 37/00 (2006.01); F02D 41/20 (2006.01)
CPC F15B 19/005 (2013.01) [F02D 41/20 (2013.01); F16K 31/02 (2013.01); F16K 37/0083 (2013.01); F15B 19/002 (2013.01); F15B 2211/426 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for ascertaining a movement of an armature of an electric intake valve, the method comprising the following steps:
controlling an electrical variable of the electric intake valve to predefined values using a two-position controller;
determining a longest deactivation phase of the intake valve based on a deactivation phase duration calculation that depends on at least one deactivation time for the two-position controller and at least one activation time for the two-position controller; and
ascertaining a characteristic point in time of the movement of the armature based on switching behavior of the two-position controller, wherein a start of only the longest deactivation phase is used as the characteristic point in time.