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:
Jul. 28, 1992
Filed:
Jul. 24, 1991
Nippondenso Co., Ltd., Kariya, JP;
Abstract
An engine speed control apparatus comprises: a first detector for detecting an engine speed; a second detector for detecting idling condition of the engine; a first setting circuit responsive to the first detector for setting a target engine speed; a second setting circuit responsive to the first detector for setting target ignition timing; a first integrator for obtaining a first integrated value of deviation of the engine speed from the target engine speed; a second integrator for obtaining a second integrated value of deviation of ignition timing from the target ignition timing; a third detector for detecting a flow rate of intake air; a determining circuit for determining a value of a predetermined state variable, presenting an internal condition of the engine according to the engine speed, the ignition timing, the flow rate of intake air; a third setting circuit for determining the flow rate of intake air supplied to the engine according to the value of the predetermined state variable, the first and second integrated values; and a fourth setting circuit for setting the ignition timing according to the value of the predetermined state variable, and the first and second integrations.