| 摘要 |
<p>PURPOSE:To improve purifying action of a catalyst converter by increasing the temperature of exhaust gas when it is low and reduce the amount of hydrogen sulfide compound generated by the catalyst converter by reducing the temperature of the exhaust gas at the time of a high temperature, in case of controlling the supercharged pressure control device of a turbo charger. CONSTITUTION:The supercharged pressure control device of a turbo charger is provided with a first communicating passage 11 having a first control valve 9, wherein the upper steam side and the lower steam side of the turbine 6a of a turbo charger 6 are communicated to each other, and a second communicating passage 12 having a second control valve 10, wherein the lower stream side of a compressor 6b is communicated with the lower stream side of the turbine 6a. Supercharged pressure is controlled by the first control valve 9 when an exhaust temperature is low, and it is controlled by the second control valve 10 when the temperature is high.</p> |
