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. 03, 1998
Filed:
Oct. 11, 1996
Naonori Iizuka, Fuji, JP;
Jatco Corporation, , JP;
Abstract
An auxiliary brake apparatus is provided that includes an exhaust brake system for restricting a channel area of an exhaust passage so as to increase a resistance to rotary motion of an engine, and a retarder disposed between an automatic transmission and vehicle wheels, for generating a braking force that resists an engine brake torque transmitted to the automatic transmission. The auxiliary brake apparatus further includes a required braking force determining device for determining a braking force applied to a vehicle body during down-shifting, depending upon a vehicle speed and a type of shifting, before the automatic transmission is shifted down while the exhaust brake system is actuated, and a retarder braking force control device for causing the retarder to generate a braking force during the down-shifting so that an engagement load applied to an engaging element of the automatic transmission becomes not greater than a predetermined level when the exhaust brake system and the retarder generate the braking force determined by the required braking force determining device.