Wolfgang O Rein

Author:

Wolfgang Rein

ISBN #:

3527287582

Author:

Wolfgang Rein

ISBN #:

3896692275

US Patent:

7171936, Feb 6, 2007

Filed:

Oct 23, 2003

Appl. No.:

10/691954

Inventors:

Wolfgang Rein - Milford MI, US
David Roth - West Bloomfield MI, US
Jonathan Douglas - Russellville TN, US

Assignee:

Mahle Technology, Inc. - Farmington Hills MI

International Classification:

F02F 3/00
F02F 3/10

US Classification:

1231934, 29888048

Abstract:

The present invention relates to a piston adapted for reciprocal movement within the cylinders of an internal combustion engine. The piston includes a body having a crown formed at the uppermost margins of the body and a skirt, depending from the crown, adapted for relative sliding motion with respect to the cylinder. The piston further includes a coating bonded to the piston skirt so as to be juxtaposed between the skirt and the cylinder. The coating has a plurality of recesses formed thereon so as to define a predetermined pattern of recesses on the surface of the skirt that retains lubricant between the skirt and the cylinder wall. The coating may also direct lubricant along the outer circumference of the piston skirt during reciprocal movement of the piston within a cylinder. A method of applying the coating to the piston skirt is also disclosed.

US Patent:

8136502, Mar 20, 2012

Filed:

Apr 28, 2011

Appl. No.:

13/096191

Inventors:

Juan E. Gildemeister - Howell MI, US
Florin Muscas - Novi MI, US
Wolfgang O. Rein - Milford MI, US

Assignee:

Mahle Technology, Inc. - Farmington Hills MI

International Classification:

F02F 3/20

US Classification:

1231973, 123 4135, 1231936

Abstract:

A piston and connecting rod assembly wherein the piston includes an inner cooling gallery defined in the body thereof beneath the crown of the piston, an outer cooling gallery defined between the skirt of the piston and the body and beneath the crown. A pin bore is formed in the body. A connecting rod is adapted to interconnect the piston and crankshaft where the connecting rod has at least one end with a bore extending therethrough and adapted to be aligned with the pin bore of the piston. At least one end of the connecting rod is in fluid communication with the inner cooling gallery of the piston and includes a reservoir formed on the end of the connecting rod which is adapted to collect coolant therein.

US Patent:

20040261751, Dec 30, 2004

Filed:

Jun 26, 2003

Appl. No.:

10/607174

Inventors:

Wolfgang Rein - Milford MI, US
Norbert Schneider - South Lyon MI, US

International Classification:

F02B075/32

US Classification:

123/197400

Abstract:

The present invention relates to a connecting rod and piston pin assembly for an internal combustion engine to improve wear of the piston/connecting rod pivot point and reduce deformation of the pin bore. To this end, the assembly includes a piston having a pin bore, a connecting rod having a bore adapted to be aligned with the piston pin bore and piston pin interconnecting the piston and the connecting rod through engaging their respective bores. The piston pin has a profiled outer circumference that is substantially circular in cross-section with a larger diameter at the distal ends than at the center portion. One end of the connecting rod includes a phosphatized coating and is adapted to facilitate movement between the connecting rod bore and the profiled piston pin.

US Patent:

20040261752, Dec 30, 2004

Filed:

Nov 20, 2003

Appl. No.:

10/718438

Inventors:

Wolfgang Rein - Milford MI, US
Jonathan Douglas - Russellville TN, US

International Classification:

F02B075/32

US Classification:

123/197400

Abstract:

The present invention relates to a connecting rod and piston pin assembly for an internal combustion engine to improve wear of the piston/connecting rod pivot point and reduce deformation of the pin bore. To this end, the assembly includes a piston having a pin bore, a connecting rod having a bore adapted to be aligned with the piston pin bore and piston pin interconnecting the piston and the connecting rod through engaging their respective bores. The connecting rod includes an internal gallery between the bore and a terminal end. The piston pin has a profiled outer circumference that is substantially circular in cross-section with a larger diameter at the distal ends than at the center portion. Either the pin or one end of the connecting rod includes a phosphatized coating having a thickness between two and eight microns to facilitate movement between the connecting rod bore and the profiled piston pin.

US Patent:

20070074695, Apr 5, 2007

Filed:

Oct 4, 2005

Appl. No.:

11/243376

Inventors:

Juan Gildemeister - Howell MI, US
Florin Muscas - Novi MI, US
Wolfgang Rein - Milford MI, US

International Classification:

F02F 3/00
F01B 31/08

US Classification:

123193600, 092186000

Abstract:

A piston adapted for reciprocal movement within a cylinder of an internal combustion engine. The piston includes a crown and a skirt depending from the crown. A body extends below the crown with the skirt disposed annularly about at least a portion of the body. An inner cooling gallery is defined in the body beneath the crown. An outer cooling gallery is defined between the skirt and the body and located beneath the crown. In addition, at least one bore extends radially between the inner cooling gallery and the outer cooling gallery for providing fluid communication therebetween.

US Patent:

20110030214, Feb 10, 2011

Filed:

Aug 5, 2009

Appl. No.:

12/536144

Inventors:

Wolfgang Rein - Milford MI, US

International Classification:

B23P 15/10
B21J 5/00

US Classification:

29888042, 72364

Abstract:

A method of creating a piston crown is disclosed. The method includes the step of providing a billet and then upsetting the billet in a first station to generally decrease a length of the billet and generally increase a cross section of the billet. The billet is then pre-formed in a second station into an intermediate configuration of a piston crown, where the piston crown is in a preliminary shape. The first station and the second station are separate components. The intermediate configuration of the piston crown is formed into a final shape of the piston crown, where the final shape includes a predetermined volume. The piston crown is then precision formed into a near net shaped configuration, where the near net shaped configuration of the piston crown includes a near net shaped volume. The predetermined volume may be approximately equal to the near net shaped volume.

US Patent:

20120080004, Apr 5, 2012

Filed:

Oct 5, 2010

Appl. No.:

12/898251

Inventors:

Leandro Menezes - Rochester Hills MI, US
Dieter Gabriel - Highland MI, US
Michael T. Lapp - Bloomfield MI, US
Wolfgang Rein - Milford MI, US

International Classification:

F02F 3/16
F16J 1/04
B23P 15/10

US Classification:

1231936, 29888043, 92186, 92231

Abstract:

Exemplary piston assemblies and methods of making the same are disclosed. An exemplary piston assembly may include a piston crown and a piston skirt that is received in a central opening of the crown. The piston crown may include a ring belt portion defining, at least in part, a cooling gallery. The crown and skirt may each further include corresponding mating surfaces that extend about a periphery of the crown and skirt. The skirt mating surface and crown mating surface may generally be secured to each other that the crown and the skirt cooperate to form a continuous upper combustion bowl surface. The skirt and crown may cooperate to define a radially outer gap about a periphery of the piston crown.

US Patent:

20130025561, Jan 31, 2013

Filed:

Jul 28, 2011

Appl. No.:

13/192774

Inventors:

Dieter Gabriel - Highland MI, US
Wolfgang Rein - Milford MI, US
Thomas Stong - Kent City MI, US
David Domanchuk - Grand Haven MI, US
Thomas J. Smith - Muskegon MI, US

International Classification:

F02F 3/12
B05D 1/02
B05D 7/14

US Classification:

1231936, 427236, 427422

Abstract:

A piston including a piston crown, the piston crown having a combustion surface that further defines a combustion bowl rim area and a bowl root area. A thermal spray coating is applied to the bowl rim and/or the bowl root area of the piston to increase the resistance of the piston to thermal mechanical fatigue. The thermal spray coating may be metal or alloy based and may be applied using any suitable process.