| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a difference of a discharge gas flow rate between exhaust passages by controlling a flow-rate regulator on the basis of a temperature ratio calculated from an individual exhaust temperature of the exhaust passage. <P>SOLUTION: An electric control device 30 calculates the temperature ratio depending on an exhaust flow rate which passes through oxidation catalysts 26a, 26b on the basis of an upstream exhaust temperature and a downstream exhaust temperature to be detected from upstream exhaust temperature sensors 28a, 28b and downstream exhaust temperature sensors 29a, 29b that are located on respective discharge passages 22a, 22b. In addition, the electric control device 30 uses a difference between the respective temperature ratios to control a vane opening at turbines 162a, 162b of superchargers 16a, 16b so as to reduce the difference of the discharge gas flow rate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
