| 摘要 |
A controller for an engine system includes an exhaust-driven turbocharger including a compressor and a turbine, an exhaust gas recirculation unit configured to recirculate exhaust gas from a downstream portion of the turbine in an exhaust gas passage to an upstream portion of the compressor in an intake gas passage, and a cooling unit configured to cool the turbine, the controller includes an electronic control unit. The electronic control unit is configured to set a degree of cooling of the turbine based on a predetermined condition in which a gas temperature at an outlet portion of the compressor is higher than a predetermined temperature and the recirculating of exhaust gas is performed, and set a higher degree of cooling of the turbine when the predetermined condition is satisfied compared to a degree of cooling of the turbine when the predetermined condition is not satisfied. |
