The Development of a Severe Turbocharger Bench Engine Test

880258

02/01/1988

Event
SAE International Congress and Exposition
Authors Abstract
Content
A bench engine test has been developed which reproduces the type of turbocharger failure observed in a wide range of gasoline engined vehicles operating on commercially available API SF oils. These failures have also been reproduced in a 15000 km chassis dynamometer test developed by Audi. Initial bench engine tests showed that high temperatures alone do not cause deposit related failures. Following tests on a range of turbocharged cars a two part bench engine test was developed which discriminated between oils of different formulation. This test consisted of an initial 150 hour conditioning period run under steady state conditions followed by a cycle of wide open throttle and hot soak repeated 200 times. The combination of parameters found to be crucial in reproducing the field failures were engine oil temperature, turbocharger housing temperature, blowby, NOx and oil consumption.
Meta TagsDetails
DOI
https://doi.org/10.4271/880258
Pages
16
Citation
Toft, G., Coy, R., Krumm, H., and Muennighoff, H., "The Development of a Severe Turbocharger Bench Engine Test," SAE Technical Paper 880258, 1988, https://doi.org/10.4271/880258.
Additional Details
Publisher
Published
Feb 1, 1988
Product Code
880258
Content Type
Technical Paper
Language
English