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:
Oct. 28, 2025
Filed:
Jun. 25, 2025
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Sikandar Khan, Dhahran, SA;
Fayyaz, Dhahran, SA;
Hassan Javed, Angelholm, SE;
Muhammad Waqas, Mianwali, PK;
Agha Muhammad Jazim, Karachi, PK;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
Abstract
A independent rotary valve engine and a method for controlling thereof includes an engine crankcase, a crankshaft located therein, a bidirectional servo motor connected to the engine crankcase, a cylinder block connected to the engine crankcase, and a cylinder head connected to the cylinder block, with a spark plug and a piston linked by a connecting rod to the crankshaft. An intake rotary valve is located within a first channel in the cylinder head, and an exhaust rotary valve is located within a parallel second channel. A pulley connects a servo motor shaft of the bidirectional servo motor to the intake rotary valve. An engine control device, operatively connected to the spark plug and the bidirectional servo motor, generates spark timing signals, receives an engine speed requirement, determines a wide-open throttle position and intake valve closing angle, and generates variable valve timing signals to rotate the servo motor shaft.