| 摘要 |
PURPOSE:To reduce exhaust energy loss without impairing the purifying function for the exhaust gas during partial cylindrical operation by interposing an exhaust gas turbine of a supercharger between the convergent point of exhaust passages on the working and resting sides and a catalyst furnished at its underflow. CONSTITUTION:The suction passage 2 shall on its midway diverge to the resting and working side suction passages 4, 3 in correspondence to the two groups of cylinders, i.e. resting cylinders A-C which are set at a standstill during low (or no) load and working cylinders D-F which operate at all times while the exhaust passage 5 shall be divided upto its midway into the resting and working side exhaust passages 7, 6. No.1 catalyst 14 is installed on the way of working side exhaust passage 6 while No.2 catalyst 15, at the underflow of the convergent point with the resting side exhaust passage 7, and an exhaust gas turbine 21 of a supercharger 20 is interposed in the exhaust passage 5 between this convergent point and No.2 catalyst 15. This exhaust gas turbine 21 is coupled with a suction gas compressor 23 through a rotary shaft 22 to pressurize the feed gas. |
