Paper 18: Emission Control by Carburation

Abstract

This paper presents basic data and information relating to the experience gained from further development work associated particularly with the application of ‘CDSE’ carburettors and ‘Duplex’ manifold systems to a wide range of engines.

It is intended to be read against the background of the earlier papers published on the subject (1) (2)†.

No attempt has been made in this short paper to examine particular criteria in depth, especially since many of the developments are still in the experimental stages.

The basic proposition presented is that intake system treatment of the induced charge is more viable commercially than alternative techniques to reduce exhaust pollutants below the legislated standards and that close limit fuel metering consistency is in any event indispensable to adequate field results, whatever system be adopted.

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References

Lawrence

Buttivent

O'Neill

C. G.

‘Mixture pre-treatment for clean exhaust—The Zenith Duplex carburation system’, S. A. E. Paper No. 670484, Mid-year Meeting, Chicago, 1967.

Lawrence

‘Mixture pre-treatment for clean exhaust; a Duplex carburation system’, Proc. Instn mech. Engrs 1967–68 182 (Pt 2A), 151.

Larborn

A. O. J.

Zackrisson

F. E. S.

‘Dual manifold as exhaust emission control in Volvo cars’, S. A. E. Paper No. 680108, Automotive Engineering Congress, Detroit, January, 1968.

‘Emission control requires good carburation and other engine modifications’, S. A. E. Journal, September, 1968.

Eltinge

Marsee

F. J.

Warren

A. J.

‘Potentialities of further emissions reduction by engine modifications’, S. A. E. Paper No. 680123, Automotive Engineering Congress, Detroit, January, 1968.