Hybrid vehicle system loss learning

A hybrid vehicle comprising:

• an engine;
• a motor-generator;
• a battery;
• a battery module configured to measure a battery power of the battery;
• and
• a hybrid controller module configured to store system loss data including engine speed adjustments corresponding to vehicle speeds and power requests, determine a system loss for a vehicle speed and a power request, compare the system loss with an expected loss for the vehicle speed and the power request, apply an engine speed adjustment based on the system loss data, and store the engine speed adjustment and a post-adjustment system loss in the system loss data when the engine speed adjustment improves the system loss.

A method for long-term system loss learning in a hybrid vehicle comprising:

• determining, using a processor, a system loss for a vehicle speed and a power request;
• comparing, using the processor, the vehicle speed and the power request with system loss data including engine speed adjustments corresponding to vehicle speeds and power requests;
• determining, using the processor, an engine speed adjustment based on the system loss data;
• applying the engine speed adjustment;
• determining, using the processor, a post-adjustment system loss;
• and
• storing, in a memory, the engine speed adjustment and the post-adjustment system loss in the system loss data when the post-adjustment system loss is an improvement over the system loss.

A system for hybrid vehicle system loss learning comprising:

• an engine;
• a motor-generator;
• a battery;
• a battery module configured to measure a battery power of the battery;
• a memory configured to store system loss data including engine speed adjustments corresponding to vehicle speeds and power requests;
• and
• a processor configured to
• determine a system loss for a vehicle speed and a power request,
• compare the system loss with an expected loss for the vehicle speed and the power request,
• apply an engine speed adjustment based on the stored system loss data, and
• perform at least one of updating the system loss data or storing additional system loss data in the memory.