| CPC B60W 10/06 (2013.01) [B60W 2520/10 (2013.01); B60W 2710/0644 (2013.01); B60W 2710/0666 (2013.01)] | 12 Claims |
|
1. A control system that controls speed of an internal combustion engine (ICE) in a series hybrid vehicle, the control system comprising:
an accelerator pedal that sends a torque request signal;
a vehicle speed sensor that sends a vehicle speed signal; and
a controller that receives the torque request signal and the vehicle speed signal and that is configured to:
determine, based on the torque request and vehicle speed signals, a plurality of allowed emulated gear ratios;
calculate an engine speed for each allowed emulated gear ratio;
determine a most efficient engine torque for the calculated engine speeds of each allowed emulated gear ratio;
select a desired emulated gear ratio having a most efficient operating point from the plurality of allowed emulated gear ratios; and
control the ICE to operate at a corresponding engine speed associated with the desired emulated gear ratio.
|