Hydraulic cushioning of a variable valve timing mechanism
Patent No. 6,866,013
Issued: March 15, 2005
Inventors: Smith; Franklin R. (Cortland, NY)
A variable camshaft timing mechanisms having a vane/housing format is provided. Working hydraulic chambers are created by imposing either single or multiple vanes of a rotor attached to the camshaft into a cavity in a housing that is attached to the camshaft sprocket. Fluid is allowed to normally exhaust from the hydraulic chamber during normal phasing until the rotor nears the end of its travel.
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