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:
Nov. 27, 2018
Filed:
Oct. 06, 2016
Hyundai Motor Company, Seoul, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
Abstract
A method for sensing reverse rotation of an engine in vehicle includes: detecting tooth period ratios using a crankshaft angle detection sensor and storing the detected tooth period ratios in a buffer of an electronic control unit (ECU); calculating a tooth period ratio between a measured tooth period and a tooth period measured just before thereof; determining whether the tooth period ratio is greater than a first reference value; updating the tooth period value stored in the buffer by measuring the recent tooth period if the tooth period ratio is greater than the first reference value; calculating the tooth period ratio using the updated tooth period value; and determining a reverse rotation state of the engine by checking whether the change shows a predetermined pattern after a change in the value of the tooth period ratio is observed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile