Patent ID: 8050856
Filing Date: 2011-11-01
Classification: B60W,F02D,Y02T,Y10T

Abstract:
1. A computer implemented method for powertrain optimization and improved fuel economy in a vehicle, the method comprising: (a) providing a modeled powertrain system and vehicle engine; (b) utilizing a reverse tractive road load demand simulation algorithm to propagate a reverse tractive road load demand and a corresponding component torque and speed, the corresponding component torque and speed derived from a vehicle speed trace in a reverse direction through the modeled powertrain system comprising: (c) determining fuel flow for each one of a plurality of states of the modeled powertrain system with the determined required engine torque and speed utilizing a dynamic optimization algorithm capable of executing a plurality of iterations to: (d) identifying an optimal state for each of the plurality of powertrain components, and (e) controlling each of the plurality of powertrain components in the identified optimal state for each of the plurality of powertrain components in order to improve fuel efficiency.