| 摘要 |
<p>PURPOSE:To heat exhaust gas at the time of a low temperature, and ensure exhaust gas purifying performance at the time of cold starting by setting a honeycomb and a heater upstream and downstream of a main monolith catalyst. CONSTITUTION:In a honeycomb heater, a plurality of slits 11 serving as a resistance adjusting mechanism are provided on a honeycomb structure 10 having multiple penetration holes 12, and two electrodes 13 are provided on the outer wall thereof. The honeycomb heater or heater catalysts 14 are provided forward (an exhaust gas upstream side) and backward (an exhaust gas downstream side) of a main monolith catalyst 15. It is thus possible to ensure exhaust gas purifying performance at the time of a low temperature of exhaust gas. And it is also possible to prevent a metal carrier itself from corroding.</p> |
