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:
Jul. 26, 2005
Filed:
Feb. 12, 2002
Tetsuo Muraji, Odawara, JP;
Tetsuo Muraji, Odawara, JP;
Mikuni Corporation, Tokyo, JP;
Abstract
It is an object of the present invention to provide a drive unit for a direct-acting valve for internal combustion engines by which a quiet internal combustion engine can be obtained with noise suppressed. This system comprises an inlet valvearranged slidably near an inlet portof an internal combustion enginefor driving the inlet port to open and close, an electromagnetic actuatorthat drives the inlet valve to open and close, and a current control unitthat controls a driving current supplied to the electromagnetic actuator. The current control unit continuously supplies the driving current, having a controlled variable value, to the electromagnetic actuator based on the operation condition of the internal combustion engine.