Oil supply failure detection circuit
AssigneeOutboard Marine Corporation
InventorsPaul T. Ng, Michael J. French
Life of this patent
Estimating the term…
Abstract
An internal combustion engine assembly including an internal combustion engine, an electronic control unit for generating control signals for controlling the engine and a solenoid oil pump for supplying oil to the engine. The oil pump includes an armature and a solenoid winding encircling the armature and being connected to the electronic control unit so that the electronic control unit causes movement of the armature and so as to allow the electronic control unit to detect the flow of current in the solenoid winding.
Claims4
An engine assembly comprising an internal combustion engine, an electronic control unit for generating control signals for controlling said engine and including a sensing resistor, a controller having an analog to digital converter connected to said sensing resistor and having an output port, and a transistor having a base connected to said output port, an emitter connected to said sensing resistor and a collector, a solenoid oil pump for supplying oil to said engine and including an armature, and a solenoid winding encircling said armature and being connected to said collector so that said electronic control unit causes current flow in said solenoid winding to move said armature and so that said electronic control unit detects the flow of current in said solenoid winding in order to determine whether said armature is in a stuck condition, and freeing means for freeing said armature from said stuck condition.
Dependencies are inferred from the claim text.