| 摘要 |
<p>A gas sensor (GS1) is configured so that a gas sensor element (1) and a housing (2) are sealed by a sealing means (3) comprising, between an outer periphery (10) of the gas sensor element (1) and an inner periphery (20) of the housing (2), a talc based powder filling part (30) and a cylindrical insulator (31) for pressing the powder filling part (30). In a relationship between a sieving particle size (DSV) of filling powder particles (300) that constitute the powder filling part (30), an element-side gap (GP1) between the inner periphery (310) of the cylindrical insulator (31) and the outer periphery (10) of the gas sensor element (1), and a housing-side gap (GP2) between the outer periphery (311) of the cylindrical insulator (31) and the inner periphery (20) of the housing (2), the element-side gap (GP1) and the housing-side gap (GP2) are set to sizes not more than twice the sieving particle size (DSV) of the filling powder particles (300).</p> |
