Patent ID: 9545843
Date: 2017-01-17
CPC Classifications: B60K,B60L,B60W,F16H,Y02T

Claim:
1. A control system for a hybrid electric vehicle powertrain comprising: an engine and engine controller, a battery, a motor-generator, gearing establishing power flow paths to vehicle traction wheels, and a system controller for managing power distribution to the traction wheels to meet driver demand; the system controller being configured to monitor vehicle operating conditions, to calculate an engine output power estimate and to command a traction torque based on estimated engine output power; the engine output power estimate being determined by input variables including generator speed, motor speed and engine torque commands to the system controller; the system controller being configured further to filter the estimated engine output power, to reduce torque disturbances in the power flow paths, and to develop a weight determination factor for modifying the engine output power estimate; and the weight determination factor being adaptive to variable vehicle operating conditions, to satisfy driver torque demand while ensuring compliance with predetermined battery charge and discharge limits.