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公开(公告)号：WO2005089201A3
公开(公告)日：2007-03-08
申请号：PCT/US2005008088
申请日：2005-03-11
Applicant: GEN MOTORS CORP
Inventor： BROWNE ALAN L , WAMPLER II CHARLES W , KEEFE ANDREW C , JOHNSON NANCY L , CAFEO JOHN A , JONES GARY L , BARVOSA-CARTER WILLIAM , MANKAME NILESH D
CPC classification number: H02N2/0095
Abstract: Disclosed herein is a programmable shim (28) for positioning a work piece (12) comprising a first plate (30); an optional reference frame (32); and an actuator (34) in operative communication with the first plate (30) and the reference frame (32). Disclosed herein too is a method of aligning a work piece (12) comprising disposing the work piece (12) upon a first plate (30) of a programmable shim (28); activating an actuator (34) with an external stimulus; wherein the actuator (34) is in operative communication with the first plate (30); and displacing the work piece (12).
Abstract translation: 本文公开了一种用于定位包括第一板（30）的工件（12）的可编程垫片（28）; 可选参考框架（32）; 以及与所述第一板（30）和所述参考框架（32）可操作地连通的致动器（34）。 本文还公开了一种对准工件（12）的方法，包括将工件（12）设置在可编程垫片（28）的第一板（30）上; 用外部刺激激活致动器（34）; 其中所述致动器（34）与所述第一板（30）操作连通; 并移动工件（12）。
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公开(公告)号：CA1309624C
公开(公告)日：1992-11-03
申请号：CA556770
申请日：1988-01-18
Applicant: GEN MOTORS CORP
Inventor： BEARDMORE JOHN M , CAFEO JOHN A
Abstract: LOW NOISE VALVE TRAIN A low noise valve train for actuating poppet valves in an internal combustion engines includes a camshaft cam profile including a preopening bluff ramp to compress the valve train prior to opening each valve with its opening ramp and a post closing bluff ramp to quickly release compression of the valve train after closing of each valve with its closing ramp together with opening and closing ramps yielding low velocity opening and closing of the valves. The result is a combination of valve train pre and post compression to obtain low opening and closing velocities for the valves while avoiding extended operation with the valve train compressed by the action of the associated bluff ramps.
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