| 摘要 |
PROBLEM TO BE SOLVED: To suppress the lowering of an exhaust gas performance while securing the operating stability of an engine after the automatic re-startup. SOLUTION: This control device of an engine includes: a feedback injection control means 47 for adjusting the fuel injection amount Finj of the engine based on the air-fuel ratio AF1 of the exhaust gas discharged from the engine; an open-loop injection control means 48 for adjusting the fuel injection amount Finj without being based on the air-fuel ratio F1 of the exhaust gas; an automatic stop/re-startup means 41 for automatically stopping and automatically re-starting up the engine; a temperature index value correction means 44 for subtraction-correcting an exhaust system temperature index value CT which is correlated to the temperatures of exhaust systems 25, 26, 27 while the engine is automatically stopped; and an injection control mode changeover means 49 for controlling the feedback injection control means 47 and the open-loop injection control means 48 based on the operating conditions of the automatic stop/re-startup means 41 and the exhaust system temperature index value CT after the correction. COPYRIGHT: (C)2010,JPO&INPIT
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