| Parameter | Specification |
|---|---|
| Sensor Type | Carbon Canister Depressurization Pressure Sensor |
| Technology | MEMS-based pressure transducer |
| Pressure Range | 10–115 kPaA (customizable) |
| Accuracy | ±1.0% FS (10°C–85°C), ±1.5% FS (-40°C–125°C) |
| Operating Temperature | -40°C to +130°C |
| Storage Temperature | -40°C to +130°C |
| Output Signal | 0.4–4.65V or 0.5–4.5V (configurable) |
| Supply Voltage | 4.75–5.25 VDC |
| Overvoltage Protection | 18 VDC |
| Reverse Polarity Protection | -14 VDC |
| Burst Pressure | 3×P max |
| Overpressure Tolerance | 2×P max |
| Output Load (Capacitive) | Max 470nF |
| Output Load (Resistive) | Min 4.7kΩ |
| Short Circuit Protection | Yes |
| Supply Current | ≤10 mA |
| Cycling Test | 200,000 cycles |
| Housing Material | PBT+30%GF (Polybutylene Terephthalate with Glass Fiber) |
| Protection Rating | IP69 |
| Mounting Interface | Threaded connection, custom connector available |
| Dimensions | Compact design, optimized for tight engine bay spaces |
| Compliance | RoHS, REACH, ISO 7637-2, China National VI Emission Standard |
The Carbon Canister Depressurization Pressure Sensor is a critical component in modern vehicle evaporative emission control systems, specifically engineered to meet the stringent requirements of China’s National VI emission regulations. Installed on the fuel vapor adsorption system—commonly known as the “carbon canister”—this sensor measures the absolute pressure within the system and converts it into an electrical signal sent to the vehicle’s electronic control unit (ECU). This data enables real-time monitoring of fuel vapor leakage rates, supporting accurate diagnosis of evaporative emissions (EVAP) system integrity and facilitating OBD-II fault code detection during routine diagnostics.
Utilizing advanced MEMS (Micro-Electro-Mechanical Systems) technology, this sensor delivers exceptional long-term stability and high accuracy across extreme operating conditions. It maintains ±1.0% full-scale accuracy between 10°C and 85°C, and ±1.5% FS from -40°C to +125°C, ensuring reliable performance in all climate zones. The intelligent zero-point and temperature compensation algorithms minimize drift over time, while robust protection features—including overvoltage (18V DC), reverse polarity (-14V DC), short-circuit resistance, and burst pressure tolerance of 3×P max—ensure durability in harsh under-hood environments. With an IP69-rated housing, it provides complete sealing against moisture, dust, and chemical exposure, making it ideal for use in gasoline-powered vehicles subject to rigorous emission testing protocols.
Designed for OEM integration, this sensor supports customizable pressure ranges (10–115 kPaA), output voltage profiles (0.4–4.65V or 0.5–4.5V), and physical dimensions to match various vehicle platforms. Its compact size, modular configuration, and low-cost design make it suitable for mass production applications without compromising performance. The sensor is fully compatible with CAN bus communication systems and integrates seamlessly into existing EVAP control logic, enabling accurate leak detection down to 0.04 inch Hg (approximately 1.3 kPa).
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