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:
Apr. 05, 1977
Filed:
Jul. 15, 1974
Mitsuo Kawai, Toyoda, JA;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyoda, JA;
Abstract
An improved fuel control apparatus for installation on an automobile engine equipped with an electronically controlled fuel injection system and a catalytic exhaust gas purifying system to prevent excess uncombusted fuel from being carried over into the catalytic purifier and burning therein with a resultant damage thereto. The apparatus essentially comprises a plurality of solenoid valves each associated with one of a plurality of fuel injection nozzles, a device for alternately energizing the solenoid valves to close to selectively stop the supply of fuel to one of the fuel injection nozzles upon elevation of the purifier temperature above a predetermined level, and a device for detecting the temperature of the catalytic purifier and transmitting only in case of elevation of the purifier temperature above a predetermined level a signal which enables the solenoid valve energizing device to function.