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:
May. 28, 2013
Filed:
Apr. 17, 2012
Kazuyoshi Isaji, Kariya, JP;
Naohiko Tsuru, Handa, JP;
Kazuyoshi Isaji, Kariya, JP;
Naohiko Tsuru, Handa, JP;
Denso Corporation, Kariya, JP;
Abstract
A device executes a preceding vehicle following driving control and successively calculates a friction-braking-start threshold value, an engine-braking-start threshold value, an acceleration-control-completion threshold value by using equations L, Land L, respectively. The device uses a constant vehicle speed zone determined between the engine-braking-start threshold value and the acceleration-control-completion threshold value. When a compensated-evaluation-index value KdB_c of a vehicle distance between the own vehicle and a preceding vehicle is within the constant vehicle speed zone, the device drives the own vehicle at a constant speed. This control suppresses fuel consumption because of decreasing an acceleration and deceleration frequency of the own vehicle. Decreasing the deceleration frequency makes it possible to provide good vehicle following because less frequent acceleration is needed for following the preceding vehicle even if another vehicle cuts in between the own vehicle and the preceding vehicle or the preceding vehicle accelerates after decelerating.