Nissan Motor Co. and Renault S.A. announced Tuesday they will strengthen their partnership by increasing Nissan's stake in the French automaker to 15 percent. Likewise, Renault's stake in Nissan will increase from the current 36.8 percent to 44.4 percent.

The increases are to made by mid-2002.

The automakers also said they will establish Renault-Nissan BV, a management firm that will plan and supervise the implementation of the global alliance operations in the Netherlands in 2002.