Engine with inboard cam drive tensioner
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United States of America Patent
Stats
-
Nov 26, 2019
Grant Date -
Jun 21, 2018
app pub date -
Dec 21, 2016
filing date -
Dec 21, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An overhead-cam internal combustion engine includes a crankshaft, a drive wheel rotatable by the crankshaft, a cylinder head, a driven wheel rotatable by the drive wheel, and a camshaft provided within the cylinder head, the camshaft being rotatable by the driven wheel. A flexible drive member extends around the drive wheel and the driven wheel such that power from the crankshaft for rotating the camshaft is transmitted through the flexible drive member. A pair of guide members are positioned to guide a path of the flexible drive member that increases an amount of peripheral wrap of the flexible drive member about the driven wheel. The guide members have co-facing inboard guide surfaces that partially define the path. A tensioner is positioned between the co-facing inboard guide surfaces, and the tensioner is operable to exert a pulling force that increases tension in the flexible drive member during operation.
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