Use and method to reduce deposits in compression ignition internal combustion engines
AssigneeShell USA, Inc.
InventorsChristopher William Clayton, Michael Gee, Rodney Glyn Williams, Emma Wyatt, Alan Norman Ross, Keith Woodall, Jacqueline Glen Reid, Simon Christopher Mulqueen, Stephen Leonard Cook
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Abstract
Use of an additive selected from nitrate compounds, peroxide compounds, nitrite compounds and polyether compounds, and mixtures thereof in a diesel fuel composition for reducing the build-up of deposits in an Exhaust Gas Recirculation (EGR) system of a compression ignition internal combustion engine.
Claims8
A method for reducing a build-up of deposits in an Exhaust Gas Recirculation (EGR) system of a compression ignition internal combustion engine comprising the steps of (i) introducing into said engine a diesel fuel composition which comprises an additive selected from alkyl nitrates, wherein the alkyl nitrates are selected from compounds having a formula R1-ONO2 wherein R1 is an optionally substituted branched chain C2-C20 alkyl group;
- -(ii) combusting said diesel fuel composition in said engine;
- and (iii) measuring the reduction in the build-up of deposits in the EGR system.
Dependencies are inferred from the claim text.