EP 0342376 A3 19910403 - ELECTRONIC POSITION SENSOR ASSEMBLY AND CONTROL SYSTEM
Title (en)
ELECTRONIC POSITION SENSOR ASSEMBLY AND CONTROL SYSTEM
Publication
Application
Priority
US 19423788 A 19880516
Abstract (en)
[origin: EP0342376A2] An electronic position sensor assembly and engine control system (10) in which two sensing elements (13, 14) in a dual sensor (12) provide separate, independent position signals (A, B) related to multi-cylinder engine cycle position by sensing the angular position of a engine-rotated slotted wheel (11). The sensing elements provide identical sensing signals shifted from each other by a predetermined angular amount (d). In response to the simultaneous providing of a pulse by both sensing elements, a first reference signal (at 22) identifying a reference cylinder is provided for controlling electronic distribution of spark timing and/or fuel injection signals to engine cylinders (17-20). In response to a selected one of the sensing elements producing a pulse which has a predetermined longer duration than a preceding produced pulse, a second reference signal (after 50) is produced indicative of top-dead center engine cylinder cycle position for one of the cylinders. In response to detecting a fault in the position signal produced by the one selected sensing element, a switch (27) selects the other of the sensing elements for utilization in producing the second reference signal, and a substitute reference signal circuit (40) provides a substitute first reference signal. A less expensive and more reliable engine position sensor assembly and engine control system is provided since proper system operation is maintained despite a fault in one of the position signals.
IPC 1-7
IPC 8 full level
F02D 41/34 (2006.01); F02P 7/073 (2006.01); F02P 7/077 (2006.01); F02P 15/00 (2006.01)
CPC (source: EP)
F02D 41/009 (2013.01); F02P 7/073 (2013.01); F02P 7/0775 (2013.01); F02P 15/008 (2013.01)
Citation (search report)
- [A] US 4145608 A 19790320 - SHIRASAKI SHINJI, et al
- [A] EP 0240858 A1 19871014 - HITACHI LTD [JP]
- [A] US 4442822 A 19840417 - KONDO TETSUYA [JP], et al
- [A] FR 2374528 A1 19780713 - CII [FR]
- [A] EP 0231751 A1 19870812 - HITACHI LTD [JP]
- [A] DE 2458946 A1 19760616 - SIEMENS AG
- [A] WO 8202927 A1 19820902 - MOTOROLA INC [US]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0342376 A2 19891123; EP 0342376 A3 19910403; EP 0342376 B1 19960214; AT E134251 T1 19960215; DE 68925658 D1 19960328; DE 68925658 T2 19960919; DE 68929420 D1 20020905; DE 68929420 T2 20021205; EP 0682180 A2 19951115; EP 0682180 A3 19960124; EP 0879956 A1 19981125; EP 0879956 B1 20020731
DOCDB simple family (application)
EP 89107080 A 19890420; AT 89107080 T 19890420; DE 68925658 T 19890420; DE 68929420 T 19890420; EP 95110314 A 19890420; EP 98112946 A 19890420