| 摘要 |
A particulate filter (4) is provided in an exhaust passage (3) of a diesel engine (1) in order to trap particulate matter in exhaust gas. A controller (11) determines a basic fuel injection amount in response to an accelerator pedal depression amount (S22), determines a maximum fuel injection amount in response to an intake air amount of the engine (1) (S10), and sets the smaller of the basic fuel injection amount and the maximum fuel injection amount as the target injection amount (S24-S26). When the deposited amount of particulate matter on the particulate matter filter (4) has exceeded a predetermined amount, reductions in output torque are prevented by increasing the maximum injection amount (S13).
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