| 摘要 |
A pressure measurement pipe clog preventing device of a diesel particulate filter is provided to prevent unnecessary regeneration logic from being executed by an abnormal signal of a pressure measurement sensor. A pressure measurement pipe clog preventing device of a diesel particulate filter, includes a front pressure measurement pipe(2) and a rear pressure measurement pipe(3) connected to a front end and a rear end of a filter(1); a pressure measurement sensor(4) connected to the front and the rear pressure measurement pipe; a three-way solenoid valve(5) for interconnecting the front pressure measurement pipe and an intake manifold of an engine; a two-way solenoid valve(6) mounted on the rear pressure measurement pipe; a control unit(7) for controlling opening/shutting of the three-way solenoid valve and the two-way solenoid valve; and a key switch(8) for allowing the control unit to perceive engine on and engine off.
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