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    • 2. 发明公开
    • Drive apparatus for vehicle
    • Fahrzeugantrieb
    • EP1466774A2
    • 2004-10-13
    • EP04252115.3
    • 2004-04-08
    • NISSAN MOTOR COMPANY, LIMITED
    • Hatsuda, TadayukiNiikuni, TetsuyaTanimoto, Tsutomu
    • B60K6/04
    • B60K6/26B60K6/36B60K6/40B60K6/44B60K6/52B60K6/54B60K7/0007B60K17/043B60K17/356B60T2270/603B60W10/08Y02T10/52Y02T10/623Y02T10/6265Y10S903/906
    • A drive apparatus basically comprises left and right drive units each including at least a reduction gear (3L, 3R), an electric motor (4L, 4R; 4L', 4R'; 4L", 4R") without a permanent magnet, and a brake disc (15L, 15R). Each of the left and right drive units is housed substantially within a rim (2L, 2R) of each of rear wheels (1L, 1R) which are driven wheels. A 4WD control unit (9; 9') is configured to control a pair of inverters (7L and 7R; 7L' and 7R') to separately drive the electric motors (4L, 4R; 4L', 4R'; 4L", 4R") when a vehicle speed is in a range between a standing start speed and a prescribed vehicle speed, and to stop driving the electric motors (4L, 4R; 4L', 4R'; 4L", 4R") when the vehicle speed is equal to or greater than the prescribed vehicle speed to place the rear wheels (1L and 1R) in a driven state. Accordingly, a friction loss due to a cogging torque encountered in a conventional permanent magnet-type motor is eliminated, and a lightweight drive apparatus is obtained. Fuel efficiently is accordingly improved.
    • 驱动装置基本上包括左右驱动单元,每个驱动单元至少包括没有永久磁铁的减速齿轮(3L,3R),电动马达(4L,4R; 4L',4R'; 4L“,4R”),以及 制动盘(15L,15R)。 左驱动单元和右驱动单元中的每一个基本上被容纳在作为从动轮的每个后轮(1L,1R)的轮辋(2L,2R)中。 4WD控制单元(9; 9')被配置为控制一对逆变器(7L和7R; 7L'和7R')来分别驱动电动机(4L,4R; 4L',4R'; 4L“,4R “)当车速在站立起动速度和规定车速之间的范围内时,当车速为车速时停止驱动电动机(4L,4R; 4L',4R'; 4L”,4R“) 等于或大于规定的车速以将后轮(1L和1R)置于驱动状态。 因此,消除了由于在常规永久磁铁型电动机中遇到的齿槽转矩引起的摩擦损失,并且获得了轻质的驱动装置。 燃料效率相应提高。