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:
Feb. 29, 2000
Filed:
Jul. 27, 1998
Makoto Sawada, Kanagawa, JP;
Hirofumi Okahara, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A control system comprises a line pressure control section which controls a line pressure applied to pulleys of a CVT according to an input load from the engine. When the input load is temporally increased, the line pressure is temporally increased by a pressure increasing section. After the line pressure is held for a predetermined time, the temporally increased line pressure is slowly decompressed by a step amount which is set small according to the increase of a transmission ratio of the CVT. This slow decompression of the line pressure suppresses the generation of vibrations of a drive system. Further, when an anti-skid control apparatus is operating or when a start clutch is engaged by the increase of the line pressure, the slow decompression is cancelled to smoothly execute their operations.