Patent application number | Description | Published |
20080283030 | METHOD TO DETERMINE A FUEL COMPOSITION - The invention concerns a method to determine the composition of a fuel from the components ethanol and gasoline of an internal combustion engine, wherein the fuel is supplied to the internal combustion engine by means of a fuel supply unit and via two fuel distributor rails; and the exhaust gas is discharged from the internal combustion engine by means of two exhaust gas manifolds of a first and a second exhaust gas system, which are separated from each other, wherein the first and second exhaust gas system have in each case at least one exhaust gas probe and wherein current changes in the ethanol content of the fuel are evaluated from the signal differences of lambda signals from the exhaust gas probes. With this method, a change in the ethanol content of the fuel can be detected, and an explicit condition for a change in fuel can be derived. Moreover, with the method, errors in the fuel-mixture can be distinguished from an altered fuel composition, which takes place after the tank has been filled (fueling). | 11-20-2008 |
20090064977 | METHOD TO DETERMINE AN ALCOHOL CONTENT - The invention relates to a method to determine an alcohol content in the fuel of an internal combustion engine, in which the fuel is delivered to the individual cylinders of the internal combustion engine by way of a fuel supply via a fuel rail; and the exhaust gas of the internal combustion engine is discharged via an exhaust gas manifold of an exhaust gas system, wherein at least one exhaust gas probe is present, and in which current changes in the alcohol content of the fuel are evaluated from the signal flow of a lambda signal of the exhaust gas probe, and said signal results from a closed-loop lambda control. | 03-12-2009 |
20090070017 | METHOD TO DETERMINE A FUEL COMPOSITION - The invention deals with a method to determine the fuel composition of a fuel mixture from a first fuel and a second fuel for the operation of an internal combustion engine, wherein the first and the second fuel have different octane numbers and wherein the internal combustion engine has at least one knock sensor and a closed-loop knock control. Provision is made according to the invention for the composition of the fuel mixture to be determined by means of an output signal of the knock sensor. Provision is made in many cases for the knock sensor to already be in the internal combustion engine, so that it does not present any additional expenditure of money or effort. Because the octane number of the fuel mixture is determined by the mixing ratio of the fuels involved, which have different octane numbers, in retrospect the composition of the fuel mixture can be suggested from the signal of the knock sensor under suitable operating conditions. | 03-12-2009 |
20090133678 | METHOD FOR TAKING THE OUTGASSING OF FUEL FROM THE ENGINE OIL OF AN INTERNAL COMBUSTION ENGINE INTO ACCOUNT - The invention deals with a method for operating an internal combustion engine with engine oil as the lubricant, wherein a fuel mass flow outgassing from the engine oil is ascertained and is taken into account via a map-based pilot control during the metering of a quantity of fuel supplied to the internal combustion engine and wherein a fuel/air ratio supplied to the internal combustion engine is determined. Provision is made in the method according to the invention for a mass flow offset determined from the deviation of the fuel/air ratio supplied to the internal combustion engine from a nominal value to be taken into account when the metering of the quantity of fuel supplied to the internal combustion engine occurs during an effective duration of the map-based pilot control. The mass flow offset takes the deviation into account, which remained after the correction by a map-based pilot control of the quantity of fuel metered, on the basis of the modeled outgassing of fuel from the engine oil, and said mass flow offset balances the lambda controller in this way. The mass flow offset can by way of example have the effect of shortening the duration injection. The mixture deviations as a result of different boiling curves of the components of the fuel blend, which cannot be completely taken into account by the map-based pilot control under all operating conditions of the internal combustion engine, can in this way be compensated. | 05-28-2009 |
20100198486 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - The invention relates to a method for operating an internal combustion engine, which can be operated with fuels and fuel mixtures of said fuels, said fuels differing from each other in the air quantity they require for a stoichiometric combustion. A fuel quantity to be supplied to the internal combustion engine is corrected via a mixture adaptation and a fuel adaptation, the mixture adaptation and the fuel adaptation being based on a lambda control and a fuel quantity contained in the fuel reservoir of the internal combustion engine prior to refueling and a fuel quantity supplied to the reservoir being determined. The method is characterized by using the change of the fuel adaptation after refueling towards a fuel/air mixture having a higher or a lower fuel percentage to extrapolate the supplied fuel or the supplied fuel mixture and the fuel quantity present in the reservoir and the knowledge of the nature of the fuel or the fuel mixture supplied to the reservoir are used to calculate the fuel mixture ration in the reservoir after refueling. The method according to the invention allows determination of the fuel mixture ratio in the reservoir of internal combustion engines which can be operated with different fuels. | 08-05-2010 |
20140174408 | METHOD FOR DETERMINING A FUEL FRACTION IN OIL - A method for determining a fuel fraction in the oil of an oil circuit ( | 06-26-2014 |
Patent application number | Description | Published |
20080213488 | Paints Comprising Particles - Coating formulations suitable for demanding applications such as automotive clear and top coats contain a hydroxyl-functional film forming resin, an isocyanate or blocked isocyanate curative, and functionalized metal oxide particles, where >50% of the reactive functionalities are more reactive towards isocyanates than at least 60% of the hydroxyl groups of the film forming resin. Coatings prepared therefrom have excellent abrasion resistance, even with low filler content. | 09-04-2008 |
20080226901 | Paints Containing Particles - Coating formulations of improved scratch resistance suitable for use in automotive clear and top coatings contain a functional group-containing film forming resin, a curative having functional groups reactive with the film forming resin, and particles having functional groups reactive with at-least one of the functional groups of the resin or the curative, the particles functionalized with an organosilane of the formulae | 09-18-2008 |
20080293958 | Process for Preparing Unsaturated Organosilicon Compounds - Unsaturated organosilicon compounds are prepared by the reaction of a halo-functional organosilicon compound with a salt of an unsaturated carboxylic acid in the presence of a tertiary phosphine. | 11-27-2008 |
20100130642 | LACQUERS CONTAINING PARTICLES WITH PROTECTED ISOCYANATE GROUPS - Particles obtained by silylating particles of a metal oxide or silicon oxide SOl with a silane containing at least one blocked isocyanate group are easily incorporated into coating materials such as clearcoats and topcoats, and imbue these coatings with high scratch resistance even at low filler content. | 05-27-2010 |