The use in a cooled exhaust gas recirculation (EGR) engine of an olefin copolymer dispersant viscosity index improver to reduce or eliminate oil thickening and sludge formation is provided. Also provided are lubricated cooled EGR engines with ability to pa...

A method and combustion system for reducing the formation of intake manifold deposits, such as including intake valve valves, and exhaust valve deposits in combustion engines by delivery of an organomolybdenum source from the vapor phase of an engine lubri...

An emission credit process (30) that facilitates the provision of emissions credits to parties that make significant contributions to effecting a particular desired emissions reduction goal or goals as pertains to a reduction of emissions that correspond t...

A method of enhancing the operation of an emissions after treatment system in a fuel combustion system involves supplying a fuel comprising an additive (preferably manganese compound) to the system, combusting the fuel to produce at least one byproduct com...

An aqueous additive containing a metal compound is used to improve the operation of combustion exhaust after treatment systems. The additive is introduced into the combustion chamber as part of an emulsion with the fuel or, alternatively, in the emulsion o...

Deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising the fuel-soluble reaction products obtained by reacting (i) a monocarboxylic acid of the formula...

Injector deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising a fuel-soluble compound having the formula (I): wherein R1 and R2 are independently C1-...