Basic Principle
The silicon strain gauge based on MEMS technology is composed of Wheatstone bridge, which is amplified and compensated by ASIC to convert the measured pressure into the corresponding voltage or SENT signal.
Main Function
The differential pressure sensor is used in the particle catcher of automobile exhaust aftertreatment system, to measure the differential pressure between the front and rear channels of DPF & GPF, so that ECU can select reasonable regeneration trigger time and additional fuel injection amount.
Technical Parameter
Technological Advantage
Using single chip MEMS technology, direct measurement of differential pressure, more responsive
The chip is protected by a special gel, ceramic substrate and gold wire that isolates carbon, water vapor and acid
The ASIC has real-time temperature compensation to ensure high accuracy output in different temperature
