Ring Pack for Downsized Spark Ignition Engines MAHLE Metal Leve S.A

Format:

Conference/Event

Author/Creator:

de Sá, de Sá, author.

Contributor:

Ferrarese, André

Conference Name:

SAE Brasil 2011 Congress and Exhibit (2011-10-04 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Downsized engines are considered one major technical trend toattend the demands for CO₂ and fuel consumption reduction. Usuallythis engine configuration consists of displacements between 0.9Land 1.2L with 3 or 4 cylinders, usually associated with turbocharge. The increased load due to high gas pressures and powerdensity may affect the PCU components, specially the pistonrings.This work reviews the ring pack used on the current downsizedengines from European and NAFTA OEMs. The different ring designsand materials used on downsized engines are discussed. The specificchallenges that those engines present to piston rings and theavailable alternatives are discussed.An extreme low friction, under development, ring pack was testedin a 1.2L Turbo downsized engine. With low friction, a lowtangential force ring pack, the main issue was control of Lube OilConsumption. The use of an innovative Oil Control Ring designenable the ring pack to present similar levels of Lube OilConsumption than the current production with almost 60% reductionon the ring pack load

Notes:

Vendor supplied data

Publisher Number:

2011-36-0157

Access Restriction:

Restricted for use by site license