Patent ID: 6285939
Filing Date: 2001-09-04
Classification: B60W,F16H,Y10T

Abstract:
A power train control system connected to a prime mover (5), controlled by a prime mover governor (2), with the prime mover being connected to a continuously variable transmission (7) which is controlled by a ratio control (3), the power train control system comprising:a combination of a transmission output speed governor (9) and a governor (10) for relief of the prime mover, and the power train control system (1) comprising means for issuing a theoretical prime mover speed nmotnom to the prime mover governor (2) and for issuing a theoretical transmission ratio inom to the ratio control (3);the transmission output speed governor (9) receiving, as a control variable input, the transmission output speed nout, and outputting, as a manipulated variable of the transmission output speed governor (9), the theoretical prime mover speed nmotnom;the governor (10) for relief of the prime mover receiving, as a control variable input, the speed nmot of the prime mover (5), and outputting, as a manipulated variable of the governor (10) for relief of the prime mover, a transmission ratio correction value .DELTA.i, with the theoretical transmission ratio inom being calculated by adding the correction value .DELTA.i to the initial transmission theoretical value i.sub.-- 0nom; andthe initial transmission theoretical value i.sub.-- 0nom is determined as a function of the theoretical prime mover speed nmotnom of the prime mover (5) and the theoretical transmission output speed noutnom.