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:
Sep. 08, 1987
Filed:
Oct. 03, 1985
Shojiro Otsuka, Higashi-Matsuyama, JP;
Hideaki Komada, Higashi-Matsuyama, JP;
Diesel Kiki Co., Ltd., Tokyo, JP;
Abstract
A multistage fuel injection system for an internal combustion engine has an injection nozzle capable of injecting main and auxiliary fuels into a cylinder of the engine at controlled intervals, thereby completely combusting an unburned fuel-and-air mixture in the cylinder. The injection nozzle includes a main injection passage for the main fuel, a needle valve for opening and closing the main injection passage, an auxiliary injection passage for the auxiliary fuel communicating with the main injection passage through the needle valve at a discharge end of the latter, and a check valve for preventing a reverse flow of the main fuel from the main injection passage to the auxiliary injection passage.