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:
Oct. 30, 2001
Filed:
Apr. 24, 2000
Akira Higashimata, Kanagawa, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
In a vehicular velocity control apparatus for an automotive vehicle, a first calculator is provided to calculate a target vehicular velocity to make an actual inter-vehicle distance from the vehicle to another vehicle which is running ahead of the vehicle substantially equal to a target inter-vehicle distance, a second calculator is provided to calculate a target vehicular driving force to make an actual vehicular velocity substantially equal to the target vehicular velocity, a first controller is operated to control an engine output variable of a vehicular engine to make an actual engine output variable substantially equal to the target vehicular driving force, a second controller is responsive to a negative target driving force to control a mechanical brake manipulated variable of a vehicular brake system to make a vehicular brake force substantially equal to the negative target vehicular driving force together with an operation of the first controller, a brake force integrator is provided to integrate the mechanical brake manipulated variable of the vehicular brake system with respect to a time duration, and a follow-up run release controller is provided to release a follow-up run control for the vehicle to follow up the other vehicle at the target inter-vehicle distance through the first and second controllers when an integration value of the mechanical brake manipulated variable with respect to a time duration by the brake force integrator is in excess of a preset reference value.