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Crankcase ventilation casing
As crankcase will have ventilation pipe leakage, fracture, fall-off and other failures, the National VI emission regulations require OBD diagnosis of crankcase pollutant emissions. When the crankcase is working, the pressure in the crankcase will increase due to the leakage of the piston ring, so the ventilation pressure sensor KPS is needed to monitor the pressure change in the positive crankcase ventilation (PCV) system, and adopt the ECU software algorithm, so as to timely learn the failure of the crankcase ventilation pipe. The pressure sensor is usually required to withstand a variety of automotive media, gasoline, oil and other atmospheres.
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