High Temperature Measurements for On-Board Diagnostics of LEV/ULEV Systems 942054
High temperature exhaust gas sensors have been used since 1975 to monitor catalyst overtemperature in the Japan auto market. Heated catalyst systems introduced to meet LEV and ULEV will make use of high temperature sensors for control and diagnosis. This paper describes the history and the evolution of these sensors. The three leading sensor technologies consisting of thermistors, thermocouples, and resistive temperature detectors (RTD) are described. Interface and system requirements for each of the sensor technologies are summarized. Sensor response time characteristics interaction with system design are covered.
Citation: LeGare, J. and Tamai, T., "High Temperature Measurements for On-Board Diagnostics of LEV/ULEV Systems," SAE Technical Paper 942054, 1994, https://doi.org/10.4271/942054. Download Citation
Author(s):
Joe LeGare, Takashi Tamai
Affiliated:
Panasonic
Pages: 8
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
On- and Off-Board Diagnostics-PT-81
Related Topics:
Reaction and response times
On-board diagnostics (OBD)
Sensors and actuators
Low emission vehicles (LEV) and zero emission vehicles (ZEV)
Catalysts
Technical review
Historical reference
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