| 摘要 |
An engine ECU executes a program including the steps of: detecting an engine speed NE and an engine load (S 100 , S 110 ); when determination is made of being in an idle region based on the engine speed NE and engine load (YES at S 120 ), determining whether in a high load idle region or a low load idle region (S 130 ); reducing the operation sound by stopping a high-pressure fuel pump in a high load idle region (S 150 ); and aiming for combustion stabilization without stopping the high-pressure fuel pump in a low load idle region (S 170 ).
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