US 11,746,725 B2
Steel piston having oxidation and erosion protection
Warran Boyd Lineton, Chelsea, MI (US); Gregory Salenbien, Britton, MI (US); and Michael Weinenger, Southfield, MI (US)
Assigned to Tenneco Inc., Lake Forest, IL (US)
Appl. No. 17/630,733
Filed by Tenneco Inc., Lake Forest, IL (US)
PCT Filed Jan. 17, 2020, PCT No. PCT/US2020/014048
§ 371(c)(1), (2) Date Jan. 27, 2022,
PCT Pub. No. WO2020/163058, PCT Pub. Date Aug. 13, 2020.
Claims priority of provisional application 62/846,916, filed on May 13, 2019.
Claims priority of provisional application 62/846,307, filed on May 10, 2019.
Claims priority of provisional application 62/796,698, filed on Jan. 25, 2019.
Claims priority of provisional application 62/794,223, filed on Jan. 18, 2019.
Prior Publication US 2022/0260033 A1, Aug. 18, 2022
Int. Cl. F02F 3/14 (2006.01); F02F 3/26 (2006.01); F02F 3/22 (2006.01); F02F 3/00 (2006.01)
CPC F02F 3/14 (2013.01) [F02F 3/22 (2013.01); F02F 3/26 (2013.01); F02F 2003/0061 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A piston, comprising:
a body formed of an iron-based material,
a superalloy disposed on said body, and
manganese phosphate disposed on at least one of said body and said superalloy.