The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1983
Filed:
Jan. 19, 1981
Shigeki Morinaga, Hitachi, JP;
Sanshiro Obara, Hitachi, JP;
Hiroastu Tokuda, Katsuta, JP;
Hideo Nakamura, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A control apparatus for an internal combustion engine includes a plurality of sensors for producing signals indicative of operating conditions of the engine, an input/output unit adapted to receive sensed signals and to deliver control signals to actuators which control an energy conversion function of the engine and a central-processor unit coupled with the input/output unit and adapted to execute an arithmetic operation for producing data to be sent to the input/output unit. The input/output unit includes a first register file having a plurality of registers for storing constants and data produced by the central processor unit and a second register file having a plurality of registers for storing signals indicative of conditions of the engine as of a selected instant in time during which the engine is operative. A comparator is provided to compare the contents of the selected one of registers of the first register file with the content of the selected one of registers of the second register file, and the resultant output is applied to the actuators. The first register file further includes a register storing a prescribed constant with which selected ones of the registers of the second register file are compared by the comparator in response to the contents of prescribed ones of the second register file causing the comparator to produce an output.