| 摘要 |
PURPOSE: A method for calculating a forced fuel injection quantity of a DPF device is provided to prevent cost increase by calculating a fuel injection quantity when mounting an active DPF. CONSTITUTION: A RPM conversion factor is calculated using a logic map which makes a different proportion ratio according to low and high back pressure of an exhaust gas for an RPM. A forced fuel injection quantity is produced using the RPM conversion factor of the logic map which conforms with the RPM of control point. A PWM(Pulse With Modulation) value with a function relation between the forced fuel injection quantity and the exhaust gas temperature. The fuel is forcedly injected to a catalyst leading part.
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