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:
Feb. 27, 2001
Filed:
Jun. 18, 1999
Applicant:
Inventor:
Kousaku Shimada, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01L 9/04 ; F02D 1/702 ; F02D 1/304 ;
U.S. Cl.
CPC ...
F01L 9/04 ; F02D 1/702 ; F02D 1/304 ;
Abstract
There is provided an engine control apparatus with electromagnetically driven intake and exhaust valves which can widen the dynamic range of engine brake torque. The valve open timing of the electromagnetic exhaust valve during fuel cut is made to be variable between the initial stage of expansion stroke and the late stage thereof so as to control the magnitude of engine brake torque.