| 摘要 |
<p>PURPOSE:To provide an exhaust gas purification device capable of being surely ignited by controlling air which affects the ignition of a burner regardless of engine operating conditions, and disposing a control valve in a passage between the burner and a blower. CONSTITUTION:When a reactivation signal for a filter F is outputted, a burner 3 is ignited. An air blower AP changes its rate of blown air from time to time in response to the existing engine speed. When the rate of blown air is increased, the air flow pressure moves the air control valve 1 in the direction of its closure so that the primary air 5 may be reduced and the secondary air 4 increased. In this manner, by regulating the primary air, misfires and blown-out phenomena can be prevented.</p> |
