Process for reducing engine wear in the operation of an internal combustion engine
AssigneeThe Lubrizol Corporation
InventorsDavid A. Duncan, Deborah A. Langer, Mayur P. Shah, Frank V. Zalar
Life of this patent
Estimating the term…
Abstract
This invention relates to a process for reducing engine wear in the operation of an internal combustion engine, comprising: (A) recirculating at least part of the exhaust gas from the engine to the intake air supply of the engine; and (B) operating the engine using a water-blended fuel composition made by combining: (i) a normally liquid hydrocarbon fuel; (ii) water; and (iii) at least one surfactant.
Claims20
A process for reducing engine wear in the operation of an internal combustion engine, comprising:
- (A) recirculating at least part of the exhaust gas from the engine to the intake air supply of the engine;
- and
- (B) operating the engine using a water-blended fuel composition made by combining:
- (i) a normally liquid hydrocarbon fuel;
- (ii) water;
- and
- (iii) at least one surfactant comprising:
- (iii)(a) at least one product made from the reaction of an acylating agent with ammonia, an amine, a hydroxyamine, an alcohol, or a mixture of two or more thereof;
- (iii)(b) at least one product derived from:
- a polycarboxylic acylating agent;
- a copolymer derived from at least one olefin monomer and at least one alpha, beta unsaturated carboxylic acid or derivative thereof;
- and a linking compound having two or more primary amino groups, two or more secondary amino groups, at least one primary amino group and at least one secondary amino group, at least two hydroxyl groups, or at least one primary or secondary amino group and at least one hydroxyl group;
- (iii)(c) at least one Mannich reaction product derived from a hydroxy aromatic compound, an aldehyde or a ketone, and an amine containing at least one primary or secondary amino group;
- (iii)(d) at least one ionic or a nonionic compound having a hydrophilic-lipophilic balance of about 1 to about 40;
- or
- (iii)(e) mixture of two or more of (iii)(a) through (iii)(d).
A process for reducing engine wear in the operation of a compression ignition engine equipped with an exhaust gas recirculation system, the process comprising:
- (A) recirculating at least part of the exhaust gas from the engine using the exhaust gas recirculation system;
- and
- (B) operating the engine using a water-blended diesel fuel composition made by combining:
- a diesel fuel;
- water;
- the reaction product of a fatty acid with an alkanol amine;
- and
- the reaction product of a hydrocarbon-substituted succinic acid or anhydride with an alkanol amine.
A process for reducing engine wear in the operation of a compression ignition engine equipped with an exhaust gas recirculation system, the process comprising:
- (A) recirculating at least part of the exhaust gas from the engine using the exhaust gas recirculation system;
- and
- (B) operating the engine using a water-blended diesel fuel composition made by combining:
- a diesel fuel;
- water;
- the reaction product of a polyisobutene substituted succinic acid or anhydride with an alkanol amine, the polyisobutene substituent having a number average molecular weight of about 1500 to about 3000;
- the reaction product of a polyisobutene substituted succinic acid or anhydride with at least one alkylene polyamine, the polyisobutene substituent having a number average molecular weight of about 750 to about 1500;
- and
- the reaction product of a hydrocarbon substituted succinic acid or anhydride with an alkanol amine, the hydrocarbon substituent having about 12 to about 30 carbon atoms per molecule.
Dependencies are inferred from the claim text.