Pre-combustion engine lubrication system
OwnerJohn F. Lulichinventor
Life of this patent
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Abstract
An internal combustion engine is provided with an oil pumping system operatively driven from the starter motor which generates normal operating oil pressure prior to combustion. The starter motor is energized with a first, lower level of electrical energy during its precombustion oiling operation and a second, higher level of electrical energy during its engine-cranking operation to conserve electrical energy and facilitate meshing between the starter gear and the engine flywheel.
Claims12
In an internal combustion engine having
- a plurality of movable parts which require lubrication during relative movement to reduce wear;
- an electromechanical engine starter mechanism for initiating movement within said engine and having an armature shaft;
- and
- an oil supply system having a main oil pump which circulates oil to said movable parts in response to movement within said engine;
- the improvement comprising:
- means for activating said starter mechanism in a first mode of operation in which movement is not initiated within said engine and in a second mode of operation in which movement is initiated within said engine to effect combustion;
- and
- a supplemental oil pump communicating with said oil supply system and including a rotatable drive shaft operatively connected to said armature shaft starter mechanism to pump oil within said oil supply system in response to at least said first mode of operation of said starter mechanism.
In an electromechanical starter mechanism having an electric motor, a rotatable armature shaft, a starter gear connected to rotate with said rotatable armature shaft, and means for urging said starter gear into and out of engagement with the flywheel of an internal combustion engine, the improvement comprising:
- a pump mechanism connected to said rotatable armature shaft and actuated by rotation thereof, said pump mechanism able to communicate with the lubrication system of an internal combustion engine to which said starter mechanism is engageable through oil inlet and oil outlet orifices;
- first means for energizing said starter mechanism to both actuate said starter gear urging means and rotate said rotatable armature shaft;
- and
- second means for energizing said starter mechanism to rotate said rotatable armature shaft without actuating said starter gear urging means.
Dependencies are inferred from the claim text.