Hybrid diesel-electric powertrain smoke limit avoidance

A hybrid diesel-electric powertrain comprising:

• a diesel engine in power flow communication with an electric motor, the diesel engine and electric motor each configured to generate a respective torque in response to a provided torque command;
• a controller in communication with the electric motor, the diesel engine, and an accelerator pedal, the controller configured to:
• receive a driver torque request from the accelerator pedal;
• command the diesel engine to generate an output torque that is less than a smoke limit torque;
• command the electric motor to generate an output torque equal to the difference between the driver torque request and the output torque of the diesel engine.

A hybrid diesel-electric powertrain comprising:

• a diesel engine in power flow communication with an electric motor, the diesel engine and electric motor each configured to generate a respective torque in response to a provided torque command;
• a controller in communication with the electric motor, the diesel engine, and an accelerator pedal, the controller configured to:
• receive a driver torque request from the accelerator pedal;
• smooth the driver torque request;
• command the diesel engine to generate an output torque that is less than an efficiency limit torque, the efficiency limit being lower than a smoke limit torque by a predetermined amount;
• command the electric motor to generate an output torque equal to the difference between the smoothed driver torque request and the output torque of the diesel engine.