Engine exhaust particulate after-treatment system and corresponding computer program

摘要

An exhaust particulate trapping means (12) for trapping particulates in exhaust gases is provided in an exhaust path (3) of an engine (1). When the engine (1) enters a deceleration condition during the removal by burning of exhaust particulates trapped by the exhaust particulate trapping means (12) the flow rate of exhaust gases flowing into the exhaust particulate trapping means (12) is kept from dropping. Thus, the cooling action of the exhaust particulate trapping means (12) through heat exchange with the exhaust gases can be kept up to suppress that the temperature of the exhaust particulate trapping means (12) excessively rises on engine deceleration.