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:
Mar. 13, 2001
Filed:
Dec. 12, 1997
Nobuyuki Shibagaki, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An engine in which an elapsed time Ta(i) of 30° crank angle near top dead center of the compression stroke and an elapsed time Tb(i) of 30° crank angle near 90° after top dead center of the compression stroke are found. The difference DTa(i) of the elapsed times Ta(i) in a 720° crank angle range is found for the first cylinder and the second cylinder where combustion is performed after the first cylinder. The assumed elapsed time Tb′(i) assuming that there is no torque fluctuation is calculated from the difference of elapsed times DTa(i) of the first cylinder and the second cylinder and the assumed elapsed time Tb′(i) is used to calculate the amount of torque fluctuation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile