Title:
PLAY-REDUCING CONTROL APPARATUS FOR ELECTRICALLY DRIVEN VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/152129
Kind Code:
A1
Abstract:
Provided is a play-reducing control apparatus for an electrically driven vehicle, wherein, when the gearshift range is switched from a non-driving range to a driving range at a timing (t2) during a creeping-cut period (t1-t4), a flag (FLAG) is set to 1, and a timer (T) is started after being reset and clocks the time elapsed since t2. In the interval between t2 and t3 whereat the timer (T) is less than a preset time (T1), if the gearshift range is in a forward driving range, this fact and the FLAG being 1 makes the motor output a play reducing torque in the forward rotating direction, indicated by a solid line, and if the gearshift range is in a backward driving range, this fact and the FLAG being 1 makes the motor output a play reducing torque in the backward rotating direction, indicated by a broken line. At t3 whereat the timer (T) reaches the preset time (T1), the FLAG is set to 0 and the timer (T) is set to the preset time (T1) in preparation for the next play reduction control. Therefore, there will be no play reducing torque outputted after t3, but since the play reduction of the power transmission system will already have been completed by the play reducing torque applied thereto for the duration of the preset time (T1) from t2, there will be no abnormal noise generated upon restarting the creeping or upon normal starting-accelerating, after t4.
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Inventors:
NAKAMURA, Yohei (())
中村 洋平 (())
KAZAMA, Isamu (())
中村 洋平 (())
KAZAMA, Isamu (())
Application Number:
JP2011/059252
Publication Date:
December 08, 2011
Filing Date:
April 14, 2011
Export Citation:
Assignee:
NISSAN MOTOR CO., LTD. (2 Takara-cho, Kanagawa-ku Yokohama-sh, Kanagawa 23, 〒2210023, JP)
日産自動車株式会社 (〒23 神奈川県横浜市神奈川区宝町２番地 Kanagawa, 〒2210023, JP)
NAKAMURA, Yohei (())
中村 洋平 (())
日産自動車株式会社 (〒23 神奈川県横浜市神奈川区宝町２番地 Kanagawa, 〒2210023, JP)
NAKAMURA, Yohei (())
中村 洋平 (())
International Classes:
B60L15/20
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (Ekisaikai Bldg. 1-29, Akashi-cho, Chuo-k, Tokyo 44, 〒1040044, JP)
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Claims: