Patent ID: 6334084
Filing Date: 2001-12-25
Classification: F02D,G06F,G11C,Y02T

Abstract:
A fail-safe apparatus of an electronic control system comprising:a fault diagnosis device for performing a fault diagnosis of a diagnosis object and setting a fault diagnosis flag denoting whether a fault exists or not;a first request flag operation device for operating a first fail-safe request flag denoting whether to request execution of fail-safe process or not, according to a logic operation based on said fault diagnosis flag;a second request flag operation device for operating a second fail-safe request flag according to the logic operation based on said fault diagnosis flag, which performs an operation of a fail-safe request flag according to the logic reverse to the logic for the logic operation performed by said first request flag operation device; anda fail-safe control device for outputting a fail-safe control signal to a control object when at least one of said first and second fail-safe request flags denotes a request for executing fail-safe process.