Browse Publications Technical Papers 2009-01-0641
2009-04-20

High Accuracy Exhaust Gas Temperature Sensor with Anti-Resonance Structure 2009-01-0641

With regulations on exhaust-gas emissions becoming increasingly tight worldwide, high-accuracy exhaust-gas temperature (EGT) sensors are critical to precisely control the after-treatment systems of diesel engines. In addition, demands for longer sensor probes are growing, to enable the direct measurement of temperature at the core of the diesel particulate filter (DPF). To realize this, improved vibration resistance is required because the extension of the probe involves stronger vibration. An increasing number of turbocharged engines are expected to appear to satisfy fuel-efficiency requirements, and systems equipped with an EGT sensor will become more common for turbocharger protection. Vibration resistance is critical for an EGT sensor installed at the pre-turbocharger position because the sensor will be exposed to heavy vibration generated by the turbocharger. This study introduces a high-accuracy EGT sensor with an anti-resonance structure developed to satisfy these needs.

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