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. 20, 2009
Filed:
May. 04, 2006
Jun Taue, Shizuoka-ken, JP;
Gen Mizutani, Shizuoka-ken, JP;
Kiyohisa Sugii, Shizuoka-ken, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka-ken, JP;
Abstract
In an electric vehicle driven by a drive motor with electric power generated by an engine-driven generator and with electric power from a battery, the electric vehicle includes a residual battery power detecting module for detecting a residual power capacity of the battery, and a motor control module. When the residual power capacity decreases below an established (e.g., preset) lower limit, the motor control module lowers a voltage of an accelerator output signal, which is output in response to a rotational angle of an accelerator, to a value less than a voltage given under a condition where the residual power capacity is greater than or equal to an established (e.g., preset) lower limit. In this manner, the larger rotational movement of the accelerator required to control a rotational speed of the drive motor provides a rider with a sensory indication of the operating state of the vehicle (e.g., the residual power capacity of the battery).