Donn A Frincke

US Patent:

20070215081, Sep 20, 2007

Filed:

Mar 14, 2006

Appl. No.:

11/375427

Inventors:

Donn Frincke - Davison MI, US
Mark Stabinsky - Troy MI, US
William Albertson - Clinton Township MI, US

International Classification:

F01L 1/34
F01L 1/02
F01L 1/14

US Classification:

123090160, 123090480, 123090270

Abstract:

A variable displacement internal combustion engine having a cylinder block and a cylinder head attached thereto. The variable displacement internal combustion engine includes at least one switching hydraulic lash adjuster. A lash adjuster oil feed passage is at least partially defined by one of the cylinder block and the cylinder head. The lash adjuster oil feed passage is operable to communicate pressurized oil to the at least one switching hydraulic lash adjuster. A distributed accumulator is disposed within the lash adjuster oil feed passage and operates to attenuate oil pressure spikes within the lash adjuster oil feed passage.

US Patent:

20150107540, Apr 23, 2015

Filed:

Oct 21, 2013

Appl. No.:

14/058639

Inventors:

- Detroit MI, US
Joel Cowgill - White Lake MI, US
Hans-Guido Kemmer - Mainz, DE
Robert J. Moran - Ann Arbor MI, US
Donn A. Frincke - Davison MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

F01L 1/34

US Classification:

123 9015

Abstract:

A camshaft assembly can control the motion of the intake or exhaust valves of an internal combustion engine and includes a base shaft extending along a longitudinal axis. The camshaft assembly further includes an axially movable structure mounted on the base shaft and axially movable relative to the base shaft. The axially movable structure includes a plurality of lobe packs. Each lobe pack includes a plurality of cam lobes. The axially movable structure includes a barrel cam defining a control groove. The camshaft assembly additionally includes an actuator including an actuator body and a pin movably coupled to the actuator body between a retracted position and an extended position. The axially movable structure can move axially relative to the base shaft when the base shaft rotates about the longitudinal axis and the pin is in the extended position and at least partially disposed in the control groove.