Using an oxygen ion conductive zirconia solid electrolyte, the oxygen sensor detects if the exhaust gas air/fuel ratio is stoichiometrict. DENSO provides two types of oxygen sensors: a planar type and a thimble type.

Benefits and Features

• Quick activation of zirconia solid electrolyte
  • DENSO’s planar type oxygen sensor has a zirconia solid electrolyte integrated with an alumina heater substrate, allowing it to more quickly detect oxygen concentration with a light-off time of 10 seconds.
• High-detection accuracy
  • Controls porosity and surface conditions of a platinum detection electrode resulting in high accuracy detection.
• Short response time and high reliability
  • The sensor cover has a unique water-resistant structure that smoothly introduces exhaust gas without allowing water to invade, achieving short response time and high reliability.

Product Types

Product type Heater Light-off time (seconds) Response time (milliseconds) Planar type Integrated with solid electrolyte 10 100 Thimble type Separated from solid electrolyte 10 100