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:
Aug. 09, 2011
Filed:
May. 31, 2006
Koichi Okuda, Susono, JP;
Mitsuhiro Tabata, Sunto-gun, JP;
Hiroshi Sato, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
During a starting operation or a low-speed drive of a vehicle on a slope, the drive control of the invention sets a gradient-corresponding rotation speed Nθ as a rotation speed of an engine to output a required driving force against a longitudinal vehicle gradient θfr (step S), and sequentially sets a low-μ-road correction rotation speed Nlow upon identification of a low-μ-road drive condition, a vehicle speed difference-compensating rotation speed Nv based on a vehicle speed V, and a brake-based correction rotation speed Nb based on a brake pressure Pb (steps Sthrough S). The drive control sets a target engine rotation speed Ne* based on these settings (step S) and subsequently sets a target throttle opening THtag (step S). The operation of the engine is controlled with the greater between the target throttle opening THtag and a required throttle opening THreq corresponding to an accelerator opening Acc (step S). This arrangement effectively prevents an unexpected slide-down of the vehicle along the slope.