Internal combustion engine control unit for, and method of controlling a hybrid vehicle

An internal combustion engine control unit for a hybrid vehicle, comprising:

• a hybrid mechanism that drives the vehicle by selectively using power of the internal combustion engine and power of an electric motor;
• and
• a controller that drives the vehicle with the power of said electric motor as a main driving power and controls said hybrid mechanism so as to warm up said internal combustion engine, said controller inhibits warm-up operation of said internal combustion engine if at least one of conditions:
• (a) a requested engine output to said internal combustion engine is more than a predetermined output, and (b) an accelerator opening degree is equal or more than a predetermined opening degree, is satisfied when said internal combustion engine is being warmed up.