US 12,263,826 B1
Series hybrid engine control with driverpower following
Barry A Mason, Bradford (CA); Christopher A Tuckfield, Bloomfield Hills, MI (US); Drushan Mavalankar, Rochester Hills, MI (US); and Chunjian Wang, Troy, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on May 29, 2024, as Appl. No. 18/677,068.
Int. Cl. B60W 10/06 (2006.01)
CPC B60W 10/06 (2013.01) [B60W 2520/10 (2013.01); B60W 2710/0666 (2013.01)] 18 Claims
OG exemplary drawing
 
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:
calculate, based on the torque request and vehicle speed signals, a driver power request;
calculate engine power limits including (i) a maximum engine power that includes the driver power request plus an upper offset; and (ii) a minimum engine power that includes the driver power request minus a lower offset;
select a most efficient engine operating point between the maximum and minimum engine power; and
control the ICE to operate at the most efficient engine operating point.