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. 14, 2015
Filed:
Apr. 21, 2009
Kazunari Ide, Nagasaki, JP;
Satoshi Iwasaki, Nagasaki, JP;
Kazunari Ide, Nagasaki, JP;
Satoshi Iwasaki, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A fuel admission control unit controls a diesel engine and ensures compatibility between exhaust gas performance and engine speed response performance by considering residual oxygen in EGR gas. The control unit includes an estimation excess air ratio λcomputing unit that is an arithmetic section to compute an estimation excess air ratio λ, from the quantity of the fuel injected by a fuel injection valve into a cylinder, the intake air flow rate, and the flow rate of the residual oxygen in the EGR gas that returns back into the intake air system. The control unit also includes a fuel admission control unit that controls the fuel flow rate under hard acceleration, based on the estimation excess air ratio λthat is computed by the estimation excess air ratio λcomputing unit.