Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

Christopher Morley

Richard Hugh Clark

Paul Anthony Stevenson

Johanne Smith

Leslie C Shirvill

Adrian Philip Groves

Stephen G Bryce

A water-in-fuel emulsion composition containing a Fischer-Tropsch derived fuel and water, and its use in a compression ignition engine is provided. Emissions, for example of NO, black smoke and/or particulate matter, are lower as compared to conventional fuels but without lengthening the ignition delay and reducing the cetane number. This is achieved without the need for, or at reduced levels of, ignition improving additives, and without engine modifications.

Diesel fuel compositions

A fuel composition is provided containing (i) a base fuel, (ii) a Fischer-Tropsch derived gas oil and (iii) an oxygenate. The components (ii) and (iii) can be used in a tertiary fuel blend with a base fuel (i) for the purpose of achieving for the composition (a) a neutral or close to neutral effect on elastomeric components compared to that of the base fuel, and/or (b) a neutral or better emissions performance (in particular with respect to NOand/or particulate emissions) compared to that of the base fuel, preferably in addition to a neutral or close to neutral density for the composition with respect to that of the base fuel.

Fuel composition comprising a base fuel, a fischer tropsch derived gas oil, and an oxygenate

An apparatus (1) is provided for compressing gas, the apparatus comprising a conduit (3) provided with a non-return inlet valve (10) arranged at the upstream inlet (5) end of the conduit (3), a localized ignition source (20) arranged in the conduit (3) downstream of the non-return inlet valve (10), and means (23) for intermittently supplying secondary fluid into the conduit (3) between the non-return inlet valve (10) and the localized ignition source (20).

Compressing gas flowing through a conduit

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Chester, United Kingdom

Christopher Morley