| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce increment in fuel consumption due to power generation surely while ensuring required amount of power generation in the power generation controller of an internal combustion engine. <P>SOLUTION: An increment in specific fuel consumption due to power generation is determined from the difference of specific fuel consumption when power generation of a generator is performed and specific fuel consumption when power generation of the generator is stopped, and then electric cost (increment in fuel consumption per amount of unit power generation) is determined by dividing the specific fuel consumption due to power generation by the amount of power generation of the generator. During traveling, use frequency is determined for each class of electric cost, possible amount of power generation and average power consumption are calculated for each class, a target electric cost is set such that the balance of charge/discharge of a battery becomes 0 based on the use frequency, the possible amount of power generation and the average power consumption. Subsequently, the target electric cost is corrected depending on the difference between SOC (battery charging rate) and a target SOC and then a decision is made whether power generation of the generator 16 is performed or not by comparing the final target electric cost thus corrected with a current electric cost. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
