Patent ID: 7198335
Filing Date: 2007-04-03
Classification: B60K,B60L,B60T,B60W,Y02T,Y10S

Abstract:
1. A method for controlling regenerative braking of a four wheel drive electric vehicle equipped with front and rear motors, the front motor being coupled with front wheels via a manual transmission having a clutch, the method comprising: determining whether the four wheel drive electric vehicle is braking; determining whether the clutch is engaged or disengaged while the four wheel drive electric vehicle is braking; and controlling regenerative braking of the front and rear motors based on whether the clutch is engaged or disengaged; wherein the controlling comprises regeneratively braking only the rear motor of the front and rear motors when the clutch is disengaged; wherein a first regenerative braking force on the rear motor when the clutch is disengaged is less than a second regenerative braking force on the rear motor when the clutch is engaged.