| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an internal gear pump unit capable of further reducing a load of an output shaft of an engine by efficiently driving an electric pump up to high rotation from low rotation without using a magnetic field detecting means such as a Hall sensor. <P>SOLUTION: An inner gear 31 is connected with a rotor 33, and the rotational power of the output shaft 20 is transmitted via a one-way clutch. The one-way clutch has an engaging position at each first predetermined angle, a plurality of magnetic poles are set in number so that an angle of the adjacent N pole and the S pole form a second predetermined angle assuming a natural number as J and K, the second predetermined angle*J=the first predetermined angle and the first predetermined angle*K=360° are satisfied, and the output shaft is provided with a rotation angle detecting means. A motor control means controls current-carrying to respective coils so that a rotating speed of the rotor becomes the same as a rotating speed of the output shaft based on a rotation angle of the rotor detected by the rotation angle detecting means when operating an electric motor when the output shaft rotates at lower than a predetermined rotating speed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
