Abstract: An armature assembly for a solenoid valve allows for a valve member to be retained in the closed position through a biasing force being applied therein. A moveably supported armature bolt is movable between a first position and a second position. A valve member is coupled to the armature bolt and is configured to close with the armature bolt at the second position. An armature body is coupled to the armature bolt. A resilient member adapted to hold the armature bolt at the second position so as to retain the valve member in the closed position.

Abstract: An armature assembly for a solenoid valve allows for a valve member to be retained in the closed position through a biasing force being applied therein. A moveably supported armature bolt is movable between a first position and a second position. A valve member is coupled to the armature bolt and is configured to close with the armature bolt at the second position. An armature body is coupled to the armature bolt. A resilient member adapted to hold the armature bolt at the second position so as to retain the valve member in the closed position.

Abstract: An exhaust filter regeneration regime is described in which a filter is regenerated by triggering an exothermic reaction in the filter to burn off particulate load. In order to attain the appropriate regeneration temperatures fuel is injected in the exhaust stream and oxidizes upon contact with a catalytic converter. A control regime comprises metering fuel injection dependent upon exhaust stream temperature to provide a flexible control regime independent of engine duty cycle.