| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller for an internal combustion engine capable of determining an operating state of a waste gate valve irrespective of an operating condition of a turbocharger. <P>SOLUTION: In one cycle of the internal combustion engine 10, exhaust pulsation having a cycle every 360°CA is generated by explosion strokes of #2 and #3 cylinders in one exhaust passage 18 connected to a twin entry type turbocharger (Fig.2(a), thin line). Sine an internal pressure of the exhaust passage 18 is influenced by the explosion strokes of the #2 and #3 cylinders at valve closing with respect to indicating peak characteristics every 360°CA at valve opening of the waste gate valve 30, the peak characteristics are indicated every 180°CA (Fig.2(a), wide line). Determination of the operating state of the waste gate valve 30 is carried out by acquiring the peak characteristics by a pressure sensor 32 disposed in an exhaust passage 16. <P>COPYRIGHT: (C)2010,JPO&INPIT |
