Fca US LLC

Barry A Mason

Christopher A Tuckfield

Drushan Mavalankar

Chunjian Wang

Andy M Lee

Cristian Rostiti

Dhruvang Rathod

A control system that control speed of an internal combustion engine (ICE) in a series hybrid vehicle includes an accelerator pedal, a vehicle speed sensor and a controller. The accelerator pedal sends a torque request signal. The vehicle speed sensor sends a vehicle speed signal. The controller receives the torque request signal and the vehicle speed signal. The controller 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.

Series hybrid engine control with gear emulation

A control system that controls speed of an internal combustion engine (ICE) in a series hybrid vehicle includes an accelerator pedal, a vehicle speed sensor and a controller. The accelerator pedal sends a torque request signal. The vehicle speed sensor sends a vehicle speed signal. The controller receives the torque request signal and the vehicle speed signal. The controller 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 power; and control the ICE to operate at the most efficient engine operating point.

Series hybrid engine control with driverpower following

Intelligent battery depletion techniques for a range-extended electrified vehicle (REEV) include receiving at least (i) a state of charge (SOC) of a battery system of the REEV and (ii) a distance for a trip of the REEV, controlling an electrified powertrain (engine and electric motor) of the REEV to generate a drive torque to satisfy a driver torque request, based on at least the battery system SOC and the trip distance, determining, an optimized charge depletion or allocation profile for the trip for powering the electric motor/battery system, and controlling the electrified powertrain based on the blended charge depletion or allocation profile until the trip distance has been reached or the battery system SOC reaches a desired minimum level, and then transitioning to a charge sustaining mode where the engine generates the drive torque and maintains the battery system SOC at the desired minimum level.

Growing community of inventors

Bradford, Canada

Barry A Mason