Oxygen sensor element holding lamination type ceramic heater

摘要

An oxygen sensor element (1) has a cup-type solid electrolyte body (10) defining an air chamber (100) therein, and a plate-like lamination-type ceramic heater (2, 2a-2j) is disposed in the air chamber (100) with a front end portion contacting the bottom portion (109) of the air chamber (100). Accordingly, the lamination type ceramic heater (2, 2a-2j) is prevented form being swung and hit against the electrolyte body (10). <IMAGE>