초록 ▼

An apparatus controls the operation of a regenerative device for generating a quantity of heat to burn the exhaust particles collected in a trap located in the exhaust conduit of an internal combustion engine. The apparatus is responsive to the pressures on the inlet and outlet sides of the trap to

An apparatus controls the operation of a regenerative device for generating a quantity of heat to burn the exhaust particles collected in a trap located in the exhaust conduit of an internal combustion engine. The apparatus is responsive to the pressures on the inlet and outlet sides of the trap to detect a regeneration requirement to operate the regenerative device so as to regenerate the trap. The apparatus is also responsive to the engine speed and engine load to control the quantity of heat the regenerative device generates so as to maintain the inlet side of the trap at a target temperature during the regeneration period.

대표청구항 ▼

An apparatus for use in an internal combustion engine having an exhaust conduit for discharging exhaust particles together with exhaust gases to the atmosphere, and a trap located in said exhaust conduit for collecting exhaust particles, said apparatus comprising: regenerative means operable to gene

An apparatus for use in an internal combustion engine having an exhaust conduit for discharging exhaust particles together with exhaust gases to the atmosphere, and a trap located in said exhaust conduit for collecting exhaust particles, said apparatus comprising: regenerative means operable to generate a quantity of heat to burn the exhaust particles collected in said trap so as to regenerate said trap; sources for deriving signals indicative of (a) the pressure (P1) on the inlet side of said trap, (b) the pressure (P2) on the outlet side of said trap, (c) engine speed and (d) engine load; and control means responsive to the signals indicative of (a) and (b) for detecting a regeneration requirement to operate said regenerative means so as to regenerate said trap for a predetermined time period, said control means including means responsive to the signals indicative of (c) and (d) for controlling the quantity of heat said regenerative means generates to maintain the inlet side of said trap at a target temperature during the regeneration period.