Bosch 0281006657 Diesel Particulate Matter Sensor

The Bosch 0281006657 Particulate Matter Sensor is an advanced emission control component designed to continuously monitor the function of the Diesel Particulate Filter (DPF) in diesel-powered vehicles. This sensor provides direct measurement of soot concentration in the exhaust system, helping to reduce particulate emissions by up to 99% through precise monitoring and timely regeneration cycles.

Key Features:

• Direct soot measurement technology using resistance-based detection
• Multi-layer ceramic sensor element with inter-digital electrode structure
• Self-regenerating heating element that burns off deposited soot at temperatures above 600°C
• Integrated temperature measurement via positive temperature coefficient resistor
• Superior accuracy compared to older differential pressure sensors
• Compliant with Euro 6 and EPA emission standards

How It Works:

The sensor operates by collecting soot particles from exhaust gas onto inter-digital electrodes, which form conductive paths between electrode fingers. As soot accumulates, electrical resistance drops, and the sensor monitors this change to determine when DPF regeneration is needed. Prior to each measurement cycle, the sensor element undergoes a controlled regeneration through heating, ensuring accurate and consistent readings.

This genuine Bosch particulate matter sensor represents a significant evolution from older pressure-based monitoring systems, providing the engine control unit with real-time data for optimal DPF management and reduced emissions.