Abstract: A motor or a generator which has permanent magnets on a moveable member effectively reduces eddy current loss in the permanent magnets. A permanent magnet 1 which is provided for the moveable member of a motor or a generator, for example the rotor of a rotating motor, is divided into magnet sections (1A-1E) having divided widths (t1-t5) in response to the rate of change in the flux density in each divided magnet. Thus the eddy current loss in each magnet section (1A-1E) can be substantially equalized.

Abstract: This invention provides a rotating electric machine using an inner section of a slot of a stator as a cooling passage and allowing a high cooling efficiency. Furthermore, it provides a manufacture method for the rotating electric machine which allows streamlining of the manufacture of the cooling passage. A plate is attached to the plate retaining groove formed in proximity to the opening of the slot of the stator. A resin layer is formed by injection of resin into a space formed between the outer face of the plate and the mold set on an inner peripheral face of the stator. The plate is pressed by the injection pressure of the resin to come into close contact with the stopper and to create a seal which prevents leakage of resin into the slot.

Abstract: A rotating electric machine using an inner section of a slot of a stator as a cooling passage obtains highly effective cooling performance with a small amount of cooling medium. An opening for a slot in a stator is closed by an under plate having a closing member. A regulating plate is disposed which is a member for regulating the cross-sectional area of the passage in substantially a central section of the slot. In this manner, the cross-sectional area of the cooling passage with the plate in the slot is smaller than the cross-sectional area when the regulating plate is not provided by an area corresponding to the cross-sectional area of the regulating plate. This arrangement allows increases in cooling efficiency.

Abstract: Even when an engine rotates in the inverse direction immediately before stopping, the engine can be accurately activated. In an engine which injects fuel sequentially on the basis of an ignition order of each cylinder, a crank angle of the terminal position of the engine is stored. On the first fuel injection timing after engine activation, fuel is simultaneously injected into a cylinder which is determined from the terminal stored position and into a cylinder in a fixed positional relationship with the first cylinder. In this way, even when an engine rotates in the inverse direction immediately before stopping, fuel injection can be accurately performed at least on a cylinder into which fuel should be injected and the engine can be accurately activated.