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:
May. 14, 2019
Filed:
May. 27, 2014
Nissan Motor Co., Ltd., Yokohama-Shi, Kanagawa, JP;
Isshou Uehara, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A direct injection diesel engine is provided with a fuel injection nozzle which is capable of performing a multistage injection. In a middle-or-high load region, in order to reduce soot, an after-injection is performed immediately after a main injection. An injection timing of the after-injection is set from a map in accordance with a driving condition. During a transient time, the injection timing of the after-injection is corrected on a basis of a difference ΔP between an actual rail pressure rPrail and a target rail pressure tPrail. In a case where the injection timing after the correcting is more retardation angle side than a threshold value, the after-injection is inhibited.