| 摘要 |
An exhaust gas post processing method may include determining whether a driving condition is included in an area for monitoring a rapid-heat-up (RHU) logic process that is used to quickly raise a temperature of exhaust gas passing an exhaust line, detecting on/off signal that performs or stops the rapid-heat-up logic process, determining whether an injection signal for performing the rapid-heat-up logic process is activated or not, detecting error of components for performing the rapid-heat-up logic process, and detecting the temperature of the exhaust during the rapid-heat-up logic process and comparing the detected temperature with a modeled value. Accordingly, malfunction of the rapid-heat-up logic process is prevented before hand to realize the rapid-heat-up logic process securely, and the malfunction by the error signal is informed to the driver such that the on board diagnosis function is improved.
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