Patent ID: 7715968
Filing Date: 2010-05-11
Classification: B60K

Abstract:
1. A control method for a four-wheel drive vehicle, comprising: inhibiting (i) switching auxiliary drive wheels from a same speed condition to an increasing speed condition with respect to main drive wheels, and (ii) switching an outer wheel of said auxiliary drive wheels from said same speed condition to said increasing speed condition with respect to an inner wheel of said auxiliary drive wheels, when permitting the (i) switching said auxiliary drive wheels from said same speed condition to said increasing speed condition with respect to said main drive wheels, and the (ii) switching said an outer wheel of said auxiliary drive wheels from said same speed condition to said increasing speed condition with respect to an inner wheel of said auxiliary drive wheels, when said vehicle is in the turning condition at said second predetermined speed or more and was previously in the straight driving condition at said second predetermined speed or more, and wherein said vehicle includes