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. 11, 1978
Filed:
Sep. 14, 1976
Takehisa Yaegashi, Susono, JA;
Takayoshi Nakatomi, Susono, JA;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JA;
Abstract
An internal combustion engine provided with an EFI (electronic fuel injection) system, in which the ratio of the amount of air introduced into the engine intake system to the amount of fuel supplied to the combustion chamber is controlled to a predetermined constant ratio irrespective of engine operating conditions, is disclosed. A part of the introduced air is diverted from the intake pipe in accordance with the engine operating condition, and is introduced into the exhaust system or re-introduced into the intake system of the engine when the engine is operating under particular conditions. Thus, a rich air-fuel mixture, which is, for example, suitable for a particular engine operating condition, can be supplied to the engine combustion chamber.