| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor with high replacing efficiency of gas inside a protecting cover. SOLUTION: This gas sensor has a detecting element part 12 installed inside an exhaust pipe 4 and the protecting cover 13 having a cylindrical shape with bottom, in which the detecting element part 12 is housed, installed on the inner surface of the exhaust pipe 4. A gas inflow hole 19 is installed in a cylindrical part 13a positioned in the upstream part of the protecting cover 13, and a gas exhaust hole 21 is installed in the position, where negative pressure generated by gas flow becomes maximum, in the bottom 13b of the protecting cover 13. |
