| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an NOx exhaust reducing device capable of stable operation, while reducing an NOx exhaust quantity, even when a load is low. <P>SOLUTION: This NOx exhaust reducing device has a high temperature EGR supply means supplying high temperature EGR gas in a cylinder, a low temperature EGR supply means supplying low temperature EGR gas in the cylinder, and an extremely low load operation control means (Step S8) for increasing the EGR ratio of the high temperature EGR gas, while reducing the low temperature EGR gas, as the load becomes small in an extremely low load area. <P>COPYRIGHT: (C)2007,JPO&INPIT |
