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. 18, 1997
Filed:
Jun. 07, 1995
Masuo Kashiwabara, Atsugi, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
A control apparatus for a vehicle having a continuously variable transmission between an engine and a drive shaft prevents the transmission from shifting up when an accelerator is released on a curved uphill road, which also prevents transmission-gear-ratio hunting. A high-speed-side upper limit 'imax' on the speed change ratio of the transmission is set according to a decreasing function with respect to the absolute value .vertline.R.THETA..vertline. of a hill-climbing resistance and a vehicle speed VSP. A target transmission speed change ratio 'itgt', which is determined according to a target horsepower calculated from the hill-climbing resistance, is compared with the upper limit 'imax', and if 'itgt'> 'imax', 'itgt' is limited to 'imax'.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile