Patent ID: 9518530
Filing Date: 2016-12-13
CPC Classification: B60W,B60Y,F02D,Y02T

Claim Text:
1. A computer-implemented method of controlling a hybrid drive system including at least one electric machine and at least one diesel engine, wherein a static torque setpoint of the diesel engine is acquired, comprising: constructing a NOx emission model allowing estimation of the emissions of the diesel engine as a function of a torque of the diesel engine; calculating a dynamic NOx emission setpoint from the NOx emission model and from the static torque setpoint of the diesel engine, a NOx reduction factor parameter ξ being set, and the NOx emission setpoint NO wherein NO x s is a level of the NOx emissions under static conditions and ΔNO x is the NOx peak amplitude with respect to static conditions and wherein NO x is the maximum dynamic peak value and NO x s is the NOx emission level under static conditions; determining a dynamic torque setpoint of the diesel engine from the NOx emission setpoint; determining a dynamic torque setpoint of the electric machine as a function of the dynamic torque setpoint of the diesel engine; and applying the dynamic torque setpoints to the drive system.