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:
Nov. 09, 2004
Filed:
Mar. 21, 2002
Toshihiko Nishiyama, Oyama, JP;
Koutarou Wakamoto, Oyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
The invention provides a fuel injection controlling apparatus for an engine that reduces NOx amounts in an exhaust gas of a Diesel engine conducting lean combustion. An inter-cylinder injector ( ) is arranged in each cylinder of an engine ( ). An intake port/manifold injector ( ) is arranged at an inlet of each cylinder of an intake manifold ( ). A speed sensor ( ) for detecting the engine speed is provided to the engine. A controller ( ) is connected to the speed sensor ( ), the inter-cylinder injector ( ) and the intake port/manifold injector ( ), and calculates an engine load. The intake port/manifold injector ( ) injects the fuel when the engine load is low, and the inter-cylinder injector ( ) injects the fuel when the engine load is high.