Patent ID: 6666289
Filing Date: 2003-12-23
Classification: B60K,H02K,Y02T,Y10S

Abstract:
A magnetism prevention structure of a motor assist apparatus for a vehicle, the motor assist apparatus having an electric motor that can function as a power generator and is driven by electrical energy, the motor assist apparatus being directly connected with an engine driven by combustion of fuel and including a motor rotor and a motor stator disposed for correspondence to the motor rotor, comprising:a rotational position sensor including a sensor rotor and a sensor stator disposed for correspondence to the sensor rotor, so as to detect a rotational position of said motor rotor relative to said motor stator, wherein said motor stator and said sensor stator are each attached to a motor case installed in a cylinder block of said engine, and said motor rotor and said sensor rotor are each attached to a rotor installation member installed in a crank shaft of said engine; and said motor assist apparatus including a magnetism prevention part integrated with a motor case to prevent magnetic flux and/or electric wave noise from leaking from said electric motor between said motor rotor and said motor stator and a signal line connected to said sensor stator of said rotational position sensor and/or said sensor stator.