1.Product Introduction Automotive MEMS pressure sensor matched with crankcase ventilation system. It monitors real-time blow-by gas pressure inside engine crankcase and sends pressure signals to ECU to adjust ventilation control strategy. 2.Working Principle Internal MEMS silicon diaphragm produces tiny deformation under crankcase gas pressure, causing resistance change of Wheatstone bridge. The built-in ASIC circuit performs temperature compensation and signal conversion for ECU to identify abnormal crankcase pressure. 3.Common Technical Parameters Working pressure: -5~5kPaG(range can be customized) Precision: ±1%VCC(0~70℃) Total error band: ±1.5%VCC(-40~0℃)                             ±1.5%VCC(70~125℃) Operating temperature: -40℃~125℃ Storage temperature: -40℃~125℃ Protection pressure: 10kPaG Burst pressure: 15kPaG Electrical interface: DELPHI 12162833 (customizable) Protection grade: meet IP65 standard according to GB4208-2008 Shell material: PBT+30%GF Power supply voltage: 5±0.05VDC Output voltage: 0.5~4.5VDC (adjustable within 5V) Supply current: 12mA (Max) Output response time: less than 1.5ms Overvoltage protection: 16VDC 5min Output Low clamp level: 6.6%VCC (customizable) Output high clamp level: 92%VCC (customizable) Short circuit protection: Yes EMC(150khz ~ 2.5GHz): 50V/m EMC(80mhz ~ 3Ghzz): 100V/m ESD: 15KV 4.Product Structure MEMS pressure sensitive chip, ASIC signal processing circuit, sealed plastic housing, oil-resistant sealing pad, automotive wiring connector 5.Core Functions Real-time monitoring of crankcase internal pressure Judging blow-by gas volume of engine cylinder Optimize crankcase ventilation balance Detect blockage or leakage of ventilation pipeline 6.Typical Fault Performance Engine fault warning light on Abnormal oil consumption Unstable engine operation Evaporation system related fault codes stored 7.Application Scope Gasoline passenger cars, hybrid vehicles, light commercial vehicles, small gasoline engines