EP 0143313 B1 19890607 - SAFETY DEVICE FOR AN ELECTRONICALLY, MICROCOMPUTER-CONTROLLED COMBUSTION ENGINE
Title (en)
SAFETY DEVICE FOR AN ELECTRONICALLY, MICROCOMPUTER-CONTROLLED COMBUSTION ENGINE
Publication
Application
Priority
DE 3342848 A 19831126
Abstract (en)
[origin: US4587939A] A safety device for a controlling unit of an internal combustion engine controlled by a microcomputer includes the following circuits: (a) a source of stabilized voltage which may be subject to fluctuations; (b) a first monitoring circuit responsive to voltage breaks in the voltage source to block the controlling unit for the duration of respective voltage breaks; (c) a second monitoring circuit responsive to the operability of the microcomputer to block the controlling unit for the duration of the resetting time of the microcomputer when a non-operative condition of the microcomputer is detected.
IPC 1-7
IPC 8 full level
F02D 41/22 (2006.01); F02D 41/26 (2006.01); F02D 41/30 (2006.01); F02D 41/34 (2006.01); F02D 45/00 (2006.01)
CPC (source: EP US)
F02D 41/266 (2013.01 - EP US); F02D 41/3005 (2013.01 - EP US); F02D 2041/226 (2013.01 - EP US); F02D 2200/503 (2013.01 - EP US); F02D 2250/12 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0143313 A2 19850605; EP 0143313 A3 19860122; EP 0143313 B1 19890607; AU 3354684 A 19850530; AU 570730 B2 19880324; BR 8405961 A 19850917; DE 3342848 A1 19850605; DE 3478629 D1 19890713; JP H0641740 B2 19940601; JP S60119346 A 19850626; US 4587939 A 19860513
DOCDB simple family (application)
EP 84112555 A 19841018; AU 3354684 A 19840926; BR 8405961 A 19841123; DE 3342848 A 19831126; DE 3478629 T 19841018; JP 21649384 A 19841017; US 66488984 A 19841025