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First ULEV Turbo Gasoline Engine - The Audi 1.8 l 125 kW 5-Valve Turbo
Technical Paper
2001-01-1350
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
In an age when there is growing tension between customer expectations of high engine performance, low fuel consumption and compliance with the legal requirements on the emission of airborne pollution, the ability of a vehicle to meet the most stringent emission standards is becoming an increasingly important aspect of its market appeal.
The 1.8 l, 5-valve turbo engine which Audi launched in 1994 represented an emissions concept which, thanks to its innovative close-coupled catalytic converter, provided an ideal basis for further development to an engine meeting the US ULEV emission standard, as the current engine does [1].
Its configuration as a ULEV concept necessitated the blanket optimisation of all components which influence the exhaust emissions. The pistons and injectors were improved in order to reduce untreated emissions. The main potential was tapped by incorporating intake camshaft adjustment and a cascade catalytic converter for emissions aftertreatment, together with extensive measures for the engine management system.
The overall concept has enabled Audi to become the first car manufacturer to offer an exhaust-gas turbocharged gasoline engine that meets the US ULEV emission standard.
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Citation
Pfalzgraf, B., Fitzen, M., Siebler, J., and Erdmann, H., "First ULEV Turbo Gasoline Engine - The Audi 1.8 l 125 kW 5-Valve Turbo," SAE Technical Paper 2001-01-1350, 2001, https://doi.org/10.4271/2001-01-1350.Also In
References
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- Cerulla, S. Königstedt; J. Unselt, F. Zeilbeck, A. The new exhaust-emissions and consumption optimised Audi 1.8 l, 5-valve turbo engine for the A platform Munich 2000
- Maus, W. Brück, R. Holy, G. Future exhaust-gas aftertreatment technologies for petrol engines; The next generation of ultra-low emissions vehicles Engine & Environment Conference Graz 1999
- Faltermeier, G. Pfalzgraf, B. Brück, R. Donnerstag, A. “Design and Optimisation of a Close-Coupled Catalyst Concept for Audi 4-Cylinder Engines” SAE Technical paper series, No 980417 1998
- Weltens, H Bressler, H. Terres, F. Neumaier, H. Rammoser, D. “Optimiation of Catalytic Converter Gas Flow Distribution by CFD Prediction” SAE Technical paper series, No. 930780 1993