ENGINE CONTROLLER

PURPOSE:To improve the reliability of an engine controller by accepting the switch request signal delivered when the 2nd computer detects a fault of the 1st computer through a monitor circuit only when the 2nd computer is working in a normal state. CONSTITUTION:A CPU monitor signal 26a is delivered...

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Bibliographic Details
Main Authors SASAKI SHIYOUJI, TABUCHI KENJI
Format Patent
LanguageEnglish
Published 31.01.1986
Edition4
Subjects
BLASTING
COMBUSTION ENGINES
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
CONTROLLING COMBUSTION ENGINES
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
WEAPONS
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Summary:PURPOSE:To improve the reliability of an engine controller by accepting the switch request signal delivered when the 2nd computer detects a fault of the 1st computer through a monitor circuit only when the 2nd computer is working in a normal state. CONSTITUTION:A CPU monitor signal 26a is delivered to a CPU monitor circuit 26 from an input/output circuit 6 is order to show that a CPU is working in a normal state. When a fault is detected, the circuit 26 delivers a reset signal 26b to reset both the CPU8 and the circuit 6 in a fixed cycle. Then the output of the circuit 6 is switched to the output of a state where the engine drive is stopped safely. A backup CPU28 delivers a switch request signal 28a as long as a reset signal 28b is inverted in a fixed cycle. A switch signal 30a is sent to a switch circuit 18, and the control signals applied to a fuel supply device 20, an ignition controller 22 and a fule pump 24 are switched to the side of the CPU28.
Bibliography:Application Number: JP19840142366