| 摘要 |
<p>PURPOSE:To make it possible to easily correspond to the requirement for the change of supercharging pressure in a wide speed area from low to high in an engine which arranges an exhaust gas turbine type supercharger and a mechanically driving type supercharger in series by controlling the controlling means of the respective supercharger to accord the supercharging pressure with the aimed supercharging pressure. CONSTITUTION:In a system in which intake air passing the compressor 4 of an exhaust gas turbine type supercharger 3 driven by the exhaust has of an internal combustion engine 1 is further compressed by a mechanically driving type supercharger 5 driven by an internal combustion engine 1 and is supplied to the internal combustion turbine, an intake air bypass passage 9 which detours the supercharger 5 is provided and the first controlling means 10 is equipped on the way thereof. A relief passage 16, is provided which is branched from a pressure passage 14 introducing supercharging pressure to the diaphragm chamber of an actuator 13 for opening/closing an exhaust gas bypass valve 12 attachably provided to the supercharger 3, and the second controlling means 17 is equipped on the way thereof. Respective controlling valve 10, 17 is controlled to accord supercharging pressure with aimed supercharging pressure based on a supercharging pressure detecting means 19.</p> |
