Patent ID: 6285940
Filing Date: 2001-09-04
Classification: B60W,F16H,Y10T

Abstract:
A method for control of an automatic transmission (3) driven by an internal combustion engine (1) comprising the steps of:testing, using an electronic gear control (4), whether a cold start condition exists, wherein when a cold start condition exists;determining, using said electronic gear control (4), from the torque (MM) generated by said internal combustion engine (1) and the rotational speed thereof (nMOT), the power (P) generated by said internal combustion engine (P(i)=MM(i).multidot.nMOT(i).multidot.K, i=1. 2 . . . n, k=constant);determining from two power values (P(i), P(i+1)) calculated within one time period (dt), an energy throughput (E(NEU)) (P(i)+P(i+1)).multidot.dt;adding (SUM(E)), via a characteristic line associated with the summed up energy throughput (SUM(E)) a first driving activity (FA(WARM)) (FA(WARM))=f(SUM(E)), the first driving activity (FA(WARM)) producing higher shift points of said automatic transmission andcomparing, using said electronic gear control (3) the first driving activity (FA(WARM) with a second driving activity (FA(NORM)) (S10), wherein the second driving activity (FA(NORM)) is determined from the actual behavior of a driver.