Method and apparatus for detecting degree of clogging in particle trapping member of internal combustion engine

摘要

Particles contained in the exhaust gas discharged from an internal combustion engine are trapped by a particle-trapping-member disposed in an exhaust gas flow path. The flow rate of the exhaust gas is measured directly or indirectly, and the pressure loss for the trapping member is compared with an exhaust gas flow rate to measure the degree of clogging trapped by the trapping member. When the degree of clogging exceeds the predetermined valve, a command signal for closing an intake throttle is generated to reproduce said particle-trapping-member.