Borgwarner Inc.

Thomas R Benner

Larry A Pritchard

Christopher J Pluta

Roger T Simpson

Michael Close

An engine variable camshaft timing phaser () includes a sprocket () and a planetary gear assembly (). The sprocket () receives rotational drive input from an engine crankshaft. The planetary gear assembly () includes two or more ring gears (), multiple planet gears (), a sun gear (), and a wrap spring (). One of the ring gears () receives rotational drive input from the sprocket () and one of the ring gears () transmits rotational drive output to an engine camshaft. The sun gear () engages with the planet gears (). The wrap spring () experiences expansion and contraction exertions to permit advancing and retarding engine valve opening and closing, and to prevent advancing and retarding engine valve opening and closing.

Engine variable camshaft timing phaser with planetary gear assembly

An engine variable camshaft timing phaser () includes a sprocket () and a planetary gear set (). The sprocket () receives rotational drive input from an engine crankshaft. The planetary gear set () includes two or more ring gears (), multiple planet gears (), a sun gear (), a first set of teeth (), and a second set of teeth (). One of the ring gears () can be connected to the sprocket () and one of the ring gears () transmits rotational drive output to an engine camshaft. The sun gear () engages with the planet gears () and is driven by an electric motor (). In order to bring the planetary gear set () to a locked condition, the first set of teeth () and the second set of teeth () are mated with each other.

Growing community of inventors

Lansing, NY, United States of America

Thomas R Benner