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:
Jan. 29, 2013
Filed:
Nov. 19, 2007
Nobuyuki Iwao, Kanagawa, JP;
Shuuji Taguchi, Kanagawa, JP;
Nobuyuki Iwao, Kanagawa, JP;
Shuuji Taguchi, Kanagawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
In a vehicle mounting an engine equipped with an exhaust turbocharger and a fluid transmission device as the power transmission device, occurrence of surging in the exhaust turbocharger is prevented at the time of connecting a lockup clutch in the fluid transmission device. When a condition for connecting the lockup clutch is held to lock up the fluid transmission device coupled to the engineequipped with the exhaust turbocharger, the operation is executed by lowering a target engine rotational speed for a predetermined period of time prior to the locking up to avoid the occurrence of surging caused by a decrease in the engine rotational speed due to the lockup. A lockup clutch control deviceincludes first timer meansfor setting a time for executing the operation by decreasing the target engine rotational speed, and second timer meansfor setting a time for waiting for the start of lockup.