Machine element or mechanism – Engine starters – Automatic
Patent
1991-10-28
1994-12-06
Dolinar, Andrew M.
Machine element or mechanism
Engine starters
Automatic
74572, 192 42, 192104C, F02N 1502
Patent
active
053700082
ABSTRACT:
In an internal combustion engine having a crankshaft and a cranking motor for turning the crankshaft to start the engine, a coupler is attached to the crankshaft and serves as a carrier for a ring gear that is engaged by the cranking motor. The coupler, in effect, disconnects the ring gear from the crankshaft when the crankshaft is operating under its own power, so that the crankshaft is not encumbered by the inertia of the ring gear and thus will accelerate quite rapidly. The coupler includes a hub, which is attached to the crankshaft and is provided with outwardly opening notches, and also includes a drive ring which surrounds the hub, such that it is capable of rotating with respect to the hub. A flexplate is attached to the drive ring, and the ring gear is in turn attached to the flexplate. The drive ring carries pawls which engage the hub at the notches in the hub when the drive ring is turned by the cranking motor with the crankshaft initially at rest, so as to turn the hub and the crankshaft, but the pawls allow the hub to turn in the same direction within the drive ring when the engine starts.
REFERENCES:
patent: 1219698 (1917-03-01), Brackett
patent: 1753825 (1930-04-01), Ford
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