Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1998-06-30
2000-01-25
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123519, F02M 3302
Patent
active
060167939
ABSTRACT:
A module for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of an automotive vehicle fuel system. A pump disposed within interior space of the module has an inlet in communication with the interior space and a flow passage through which the evaporative emission space is pressurized by the pump. A vent valve within the interior space is selectively operable to a first state that vents the flow passage to the interior space of the module and to a second state that does not vent the flow passage to the interior space. An electromechanical actuator within the interior space operates both the pump and the vent valve. The actuator has an electromagnet coil disposed on the middle leg of an E-shaped core comprising a stack of ferromagnetic laminations. A first magnetically responsive lever for operating the pump is mounted for pivotal motion about a first pivot axis proximate a distal end of one of the outer legs of the core, and a second magnetically responsive lever for operating the vent valve is mounted for pivotal motion about a second pivot axis that is disposed proximate a distal end of the other outer leg of the core.
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Cook John E.
Perry Paul D.
Moulis Thomas N.
Siemens Canada Limited
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