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Title:
SERVICE VEHICLE MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/090332
Kind Code:
A1
Abstract:
A service vehicle motor control device is equipped with a rotational velocity control device, which controls the rotational velocity of a motor according to the amount that an accelerator pedal is operated, a running drive device, which transfers rotation of the motor to wheels via a torque converter and transmission, a water temperature sensing device, which senses the temperature and correlated physical quantity of engine coolant temperature, a velocity ratio sensing device, which senses the velocity ratio of the input shaft and output shaft of the torque converter, and a velocity control device, which limits the maximum rotational velocity of the motor to a limit rotational velocity that is lower than the maximum value when the velocity ratio sensed by the velocity ratio sensing device is in a limit velocity ratio range in which a torque converter efficiency is at or under a specified value, and when the water temperature sensing device senses an overheated state in which the coolant temperature is at or above a specified value.

Inventors:
HYODO, Koji (LTD. TSUCHIURA WORKS INTELLECTUAL PROPERTY DEPT. 650 Kandatsu-machi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
兵藤 幸次 (〒13 茨城県土浦市神立町650番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
NAKAZONO, Hiroki (15-5 Nishi-shimbashi, 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
中園 裕喜 (〒03 東京都港区西新橋1-15-5 TCM株式会社内 Tokyo, 〒1050003, JP)
SHIMAZU, Atsushi (LTD. TSUCHIURA WORKS INTELLECTUAL PROPERTY DEPT. 650 Kandatsu-machi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
Application Number:
JP2010/051888
Publication Date:
August 12, 2010
Filing Date:
February 09, 2010
Export Citation:
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Assignee:
TCM CORPORATION (15-5, Nishi-shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
TCM株式会社 (〒03 東京都港区西新橋1-15-5 Tokyo, 〒1050003, JP)
HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Kouraku 2-chome, Bunkyou-ku Tokyo, 04, 〒1120004, JP)
日立建機株式会社 (〒04 東京都文京区後楽二丁目5番1号 Tokyo, 〒1120004, JP)
HYODO, Koji (LTD. TSUCHIURA WORKS INTELLECTUAL PROPERTY DEPT. 650 Kandatsu-machi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
兵藤 幸次 (〒13 茨城県土浦市神立町650番地 日立建機株式会社土浦工場 知的財産部内 Ibaraki, 〒3000013, JP)
NAKAZONO, Hiroki (15-5 Nishi-shimbashi, 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
International Classes:
F02D29/00; F02D45/00; F16H61/02; F16H61/18; F16H59/08; F16H59/14; F16H59/24; F16H59/36; F16H59/46; F16H59/72; F16H59/74; F16H59/78
Foreign References:
JPS6263251A
JP2008247269A
JP2008138700A
JP2724820B2
JP2009027276A
Attorney, Agent or Firm:
NAGAI, Fuyuki (Fukoku Seimei Building 2-2-2, Uchisaiwaicho, Chiyoda-k, Tokyo 11, 〒1000011, JP)
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