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:
Jun. 07, 2011
Filed:
Sep. 14, 2009
Takao Itoh, Seto, JP;
Takao Itoh, Seto, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
An ECU calculates a drive torque request value Td0 (S) when a creep torque generation condition is satisfied (YES in S), calculates a creep torque reflection rate Kcrp using a gear rattle prevention map instead of an ordinary map (S) when a vehicle speed V is substantially zero and an engine is in a load drive state (YES in Sand NO in S) while a forward drive range is being selected (YES in S), and calculates a product of Td0 and Kcrp as a creep torque request value Tp (S). The ordinary map is a map decreasing Kcrp to 0 with increase in brake torque, and the gear rattle prevention map is a map decreasing Kcrp to a predetermined value larger than 0 with increase in brake torque.