Abstract: A vehicle drive unit includes a crank case with a crank shaft operatively disposed therein and an attached axial gap type rotating machine. The crank shaft is driven via internal combustion to rotate about a center axis. The axial gap type rotating machine includes a rotor fixed to an end of the crank shaft that extends outside of the crank case and a stator fixed to the crank case and facing the rotor. The stator includes a first stator that has first teeth that form the magnetic flux generating area and a second stator that has second teeth. A gap between the first teeth and the second teeth can be varied to vary magnetic resistance by rotating the second stator relative to the first stator. Preferably, a drive mechanism is provided to rotate the second stator relative to the first stator.

Abstract: A vehicle drive unit includes a crank case with a crank shaft operatively disposed therein and an attached axial gap type rotating machine. The crank shaft is driven via internal combustion to rotate about a center axis. The axial gap type rotating machine includes a rotor fixed to an end of the crank shaft that extends outside of the crank case and a stator fixed to the crank case and facing the rotor. The stator includes a first stator that has first teeth that form the magnetic flux generating area and a second stator that has second teeth. A gap between the first teeth and the second teeth can be varied to vary magnetic resistance by rotating the second stator relative to the first stator. Preferably, a drive mechanism is provided to rotate the second stator relative to the first stator.