Jacek M Marchel

US Patent:

7556272, Jul 7, 2009

Filed:

Sep 6, 2005

Appl. No.:

11/219893

Inventors:

Jacek Marchel - Rochester Hills MI, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

B60G 21/055

US Classification:

280124103, 280124128

Abstract:

A twist axle suspension for an automotive vehicle comprises first and second trailing arms, each having a front end and a rear end joined by an intermediate portion providing a weld site. The front ends of the trailing arms have pivots pivoted to the body of the automotive vehicle and the rear ends of the trailing arms support spring and damped rear wheels of the automotive vehicle. A perforated twist axle having first and second end sections abuts and is welded to the trailing arms at the weld sites. An arcuate apex portion joins the perforated walls to provide the twist axle with a V-shaped cross section having a shear center line disposed above the arcuate portion, the shear center being spaced a selected distance H above the axes about which the trailing arms pivot. A straight intermediate section of the twist axle is displaced from the first and second end sections to lower or raise the shear center line at the intermediate section without affecting the welds of the first and second end sections to the trailing arms.

US Patent:

8302980, Nov 6, 2012

Filed:

Dec 23, 2010

Appl. No.:

12/977362

Inventors:

Christopher P. Scolaro - Bloomfield Township, Oakland County MI, US
Jacek Marchel - Rochester Hills MI, US

International Classification:

B60G 15/07

US Classification:

280124155, 280124147

Abstract:

An eccentric steering axis strut top mount providing a reduced spindle length. An axes eccentricity is provided by laterally shifting the steering axis with respect to the strut rod axis in a direction toward a vertical ray passing through the wheel center. The axes eccentricity results in an upper point of the kingpin axis being laterally shifted toward the vertical ray with the consequence of the spindle length being shortened.

US Patent:

20050046138, Mar 3, 2005

Filed:

Aug 28, 2003

Appl. No.:

10/650206

Inventors:

John Dagg - Shelby TWP MI, US
Jacek Marchel - Rochester hills MI, US

International Classification:

B60G011/18
B60G011/20

US Classification:

280124166

Abstract:

An apparatus for preloading a torsion bar includes an adjuster arm that is adapted to be attached to and extend radially from a torsion bar and includes a free end with an involute surface formed thereon. An adjustment nut is adapted to be rigidly attached to a support member for the torsion bar adjacent a free end of the adjuster arm. An adjustment bolt having a free end for engaging the involute surface of the adjuster arm is threadably engaged in the adjustment nut. When the adjuster arm is attached to the torsion bar and the adjustment nut is attached to the support member, rotation of the adjustment bolt rotates the adjuster arm and the torsion bar about a longitudinal axis of the torsion bar thereby changing a preload applied to the torsion bar. The adjustment bolt remains perpendicular to the involute surface while the adjuster arm rotates.

US Patent:

20210062886, Mar 4, 2021

Filed:

Aug 29, 2019

Appl. No.:

16/555065

Inventors:

- Detroit MI, US
Jacek Marchel - Rochester Hills MI, US

International Classification:

F16F 9/05
B60G 17/052
B60G 11/27

Abstract:

An air spring assembly includes a piston configured to couple to a suspension component, a top cap configured to couple to a vehicle frame, and a hollow guide tube having a first end coupled to the top cap and a second end provided with an aperture to the hollow. The piston passes through the aperture and is disposed at least partially within the guide tube. The assembly also includes a diaphragm disposed at least partially within the guide tube, disposed between and attached to the piston and the top cap. The assembly further includes a seal member having an outboard portion coupled to the guide tube proximate the second end, an inboard portion coupled to the outer periphery of the piston, and a membrane extending between the outboard portion and the inboard portion. The membrane defines a rolling lobe disposed between the guide tube and the piston.

US Patent:

20200361532, Nov 19, 2020

Filed:

May 17, 2019

Appl. No.:

16/415509

Inventors:

- Detroit MI, US
Jacek Marchel - Rochester Hills MI, US
Patrick Paquin - New Baltimore MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B62D 17/00

Abstract:

An exemplary system for aligning a relative position between two components includes a locating member and an alignment insert member configured to couple with the locating member. The alignment insert member includes a radially-extending tab. The radially-extending tab has a plurality of identifying markers to identify a radial position of the locating member. The locating member is rotatable within the alignment insert member to adjust a radial position of the locating member.

US Patent:

20150328949, Nov 19, 2015

Filed:

May 16, 2014

Appl. No.:

14/280401

Inventors:

- Detroit MI, US
JACEK MARCHEL - ROCHESTER HILLS MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B60G 17/015
B60G 17/052

Abstract:

Methods and systems are provided for controlling a suspension system having an air spring. In one embodiment, a method includes: determining a desired value associated with a height of the air spring; determining an operating value associated with a height of the air spring; and controlling an amount of air at least one of to and from the air spring based on a comparison of the desired value and the operating value.