Patent application number | Description | Published |
20110301294 | PROCESS FOR PURIFYING POLYOL DISPERSIONS - The present invention relates to a process for purifying a polyol dispersion by stripping by means of at least one rotating body, to the polyol dispersion obtainable by the process according to the invention, and to the use thereof for preparing polyurethanes. | 12-08-2011 |
20130085197 | DISPERSION COMPRISING A LIQUID PHASE AND A SOLID PHASE - Dispersions comprise a liquid phase and a solid phase. | 04-04-2013 |
20130217795 | PARTICLE-COMPRISING POLYETHER ALCOHOLS - The invention relates to particle-comprising polyether alcohols which can be prepared by in-situ polymerization of olefinically unsaturated monomers in a polyether alcohol, wherein the polymerization is carried out in the presence of at least one compound (A) comprising a polyethersiloxane chain on which at least one polyether chain comprising at least one reactive hydrogen atom and a polyether chain comprising at least one olefinic double bond are present. | 08-22-2013 |
20130217796 | PARTICLE-COMPRISING POLYETHER ALCOHOLS - The invention relates to particle-comprising polyether alcohols which can be prepared by in-situ polymerization of olefinically unsaturated monomers in a polyether alcohol, wherein the polymerization is carried out in the presence of at least one compound (A) comprising a polysiloxane chain to which at least one polyether chain comprising at least one reactive hydrogen atom and a polyether chain comprising at least one olefinic double bond are bonded. | 08-22-2013 |
20140037855 | POLYUREA ELASTOMERS HAVING INCREASED CHEMICALS RESISTANCE - The present invention relates to a process for preparing polyurea elastomers, in which (a) polyisocyanates are mixed with (b) polyamines, (c) optionally amine chain extenders comprising primary or secondary amine groups, (d) optionally polyols and (e) optionally auxiliaries and additives to form a reaction mixture and cured, where at least one of the components (a) to (d) comprises dispersed filler particles. | 02-06-2014 |
Patent application number | Description | Published |
20120256759 | System and Method for Downhole Telemetry - A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool. | 10-11-2012 |
20130342354 | SYSTEM AND METHOD FOR DOWNHOLE TELMETRY - A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool. | 12-26-2013 |
20140247133 | System and Method for Downhole Telemetry - A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool. | 09-04-2014 |
20140262530 | Adjustable Mud Motor Housing Assembly - An adjustable housing assembly is provided, which includes a splined housing and an adjusting ring which contain a splined mandrel. The splined mandrel is moveable axially within the housing assembly when disengaged from upstream and downstream portions of a drill string to disengage the mandrel from the splined housing. The splined mandrel is rotatable with the adjusting ring to alter angled interfaces between the components to change the bend angle in the housing. | 09-18-2014 |
20150143889 | System and Method for Determining a Borehole Azimuth Using Gravity In-Field Referencing - A system and method are provided for determining borehole azimuth. The method comprises receiving a first set of data from a first sensor module, the first sensor module comprising a first plurality of accelerometers; receiving a second set of data from a second sensor module, the second sensor module comprising a second plurality of accelerometers, the second sensor module being positioned further downhole than the first sensor module; determining a first set of gravity components using the first set of data and a second set of gravity components using the second set of data; determining a bend angle and a tilt angle using the first and second sets of gravity components; determining a change in azimuth using the bend and tilt angles; and providing an output indicative of the change in azimuth. The system and method may also use a crustal gravity vector to correct the computed azimuth. | 05-28-2015 |
Patent application number | Description | Published |
20120210710 | METHOD FOR OPERATING A TURBOCHARGER ARRANGEMENT AND CONTROL UNIT FOR A TURBOCHARGER ARRANGEMENT - A method for operating a turbocharger arrangement of an internal combustion engine, the turbocharger arrangement comprising a low-pressure and a high-pressure turbocharging stage arranged sequentially, the low-pressure turbo-charging stage comprising a low-pressure turbine with a sensorless low-pressure turbine bypass valve, is provided. The method comprises evaluating at least one sensor signal of the turbocharger arrangement for detecting a failure mode of the sensorless low-pressure turbine bypass valve. In this way, the low-pressure turbine bypass valve may be monitored for degradation without utilizing a position sensor. | 08-23-2012 |
20120210711 | METHOD FOR OPERATING A TURBOCHARGER ARRANGEMENT AND CONTROL UNIT FOR A TURBOCHARGER ARRANGEMENT - A method for operating a turbocharger arrangement of an internal combustion engine, the turbocharger arrangement comprising a low-pressure and a high-pressure turbocharging stage arranged sequentially, the high-pressure turbocharging stage comprising a high-pressure compressor with a sensorless compressor bypass valve, comprises evaluating at least one sensor signal of the turbocharger arrangement for detecting a failure mode of the compressor bypass valve. | 08-23-2012 |
20130006494 | METHOD FOR CONTROLLING A TURBOCHARGER ARRANGEMENT OF AN INTERNAL COMBUSTION ENGINE, AND CONTROL DEVICE - Embodiments for controlling exhaust gas turbines are provided. In one embodiment, a method for controlling a turbocharger arrangement of an internal combustion engine, the turbocharger arrangement having at least a first exhaust-gas turbine and a second exhaust-gas turbine arranged downstream of the first, and an exhaust-gas aftertreatment system being arranged downstream of the second exhaust-gas turbine comprises, in a warm-up mode, controlling at least one exhaust-gas turbine so as to increase an inlet temperature of an exhaust-gas flow at the inlet into the exhaust-gas aftertreatment system. In this way, the exhaust-gas aftertreatment system may be rapidly heated. | 01-03-2013 |
20130013166 | DETERMINATION OF EXHAUST BACK PRESSURE - Systems and methods for determination of exhaust back pressure in a turbocharged engine are disclosed. In one example approach, a method for determination of exhaust back pressure for an engine with a two-staged turbocharger comprises measuring a temperature downstream the engine, a temperature downstream the turbocharger, and/or a pressure downstream the turbocharger; determining a flow parameter for exhaust mass flow; estimating an overall turbine pressure ratio or a difference with a model of the turbocharger based on the measured and determined parameters; and determining the exhaust back pressure downstream the engine with the model. | 01-10-2013 |
20130098031 | Supercharged Internal Combustion Engine Having Exhaust-Gas Recirculation Arrangement and Method for Operating an Internal Combustion Engine of Said Type - Embodiments for an internal combustion engine having at least one cylinder, at least one exhaust line for discharging combustion gases via an exhaust-gas discharge system, and at least one intake line for supplying charge air via an intake system are provided. In one example, an internal combustion engine comprises an exhaust-gas recirculation arrangement which comprises a recirculation line which branches off from the exhaust-gas discharge system and which opens into the intake system, an exhaust-gas turbocharger comprising a compressor arranged in the intake system and a turbine arranged in the exhaust-gas discharge system, a throttle element which is arranged in the intake line downstream of the compressor, a bypass line which branches off from the intake line upstream of the throttle element and which opens into the intake line again downstream of the throttle element, and an expansion machine for gaining additional energy arranged in the bypass line. | 04-25-2013 |
20130174547 | METHOD AND OBSERVER FOR DETERMINING THE EXHAUST MANIFOLD TEMPERATURE IN A TURBOCHARGED ENGINE - The disclosure relates to a method and an observer for determining the exhaust manifold temperature in a turbocharged engine upstream of the turbine. In one example, a method for determining an exhaust manifold temperature in a turbocharged engine, said engine including a turbocharger and a turbine and said exhaust manifold temperature including a temperature upstream of the turbine, said method comprises estimating a value of the exhaust manifold temperature based on a model, measuring a temperature downstream of the turbine, and correcting the value of the exhaust manifold temperature based on said measurement. | 07-11-2013 |
20130211693 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE WITH A TURBOCHARGER ARRANGEMENT AND CONTROL UNIT FOR AN ENGINE WITH A TURBOCHARGER ARRANGEMENT - Methods are provided for controlling an engine. One method may include adjusting airflow to a turbocharger arrangement with a turbine bypass valve bypassing a first turbine from a high-pressure turbocharger and a wastegate bypassing a second turbine from a low-pressure turbocharger; responsive to valve degradation, setting the turbine bypass valve fully open and the wastegate fully closed; and limiting engine torque based on a flow through a compressor of the low pressure turbocharger. In the event of valve degradation, limiting torque may reduce overspeed and surge of the low pressure turbocharger. | 08-15-2013 |
20130247567 | EXHAUST-GAS RECIRCULATION SYSTEM AND METHOD FOR EXHAUST-GAS RECIRCULATION - The present disclosure provides systems and methods for adjusting an exhaust gas recirculation rate to provide accurate air-fuel ratio. The disclosure provides a method for calculating an exhaust-gas recirculation rate based on a measured exhaust-gas lambda and a turbocharger speed. Through the use of the exhaust-gas lambda and the turbocharger speed it is possible to calculate an exhaust-gas recirculation rate while dispensing with the difficult and unreliable determination of the mass air flow for determining an exhaust-gas recirculation rate, thus providing a stable method which further reduces fuel consumption and emissions. | 09-26-2013 |
20150219052 | METHOD AND DEVICE FOR DETERMINING A CHARGE AIR MASS FLOW RATE - A method for determining charge air mass flow rate comprises a turbocharger speed sensor with a closed loop observer that is based on a modeled turbocharger revolution rate. An open loop charge air mass flow rate is determined in a characteristic field stored in an engine controller and is corrected by the scaled difference between the measured and modeled turbocharger revolution rates. The corrected closed loop charge air mass flow is fed back to model the subsequent turbocharger revolution rate and to update the open loop charge air mass flow rate in the characteristic field. | 08-06-2015 |
20150275805 | MASS FLOW RATE DETERMINATION - Various systems and methods are provided for a mass flow rate sensor. In one example, a mass flow rate sensor comprises a first signal input, a second signal input, an output for a mass flow rate signal, a first characteristic field, a second characteristic field, each of the first and second characteristic fields associating a mass flow rate value with a pair of values of a revolution rate value and an output pressure value, and a selection unit that comprises a first parameter input and a second parameter input, the selection unit configured to produce a selection signal depending on a pair of parameters respectively received via the first and second parameter inputs and to switch the mass flow rate value of either the first or the second characteristic field through to the output of the mass flow rate sensor depending on the selection signal. | 10-01-2015 |
Patent application number | Description | Published |
20120256759 | System and Method for Downhole Telemetry - A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool. | 10-11-2012 |
20130342354 | SYSTEM AND METHOD FOR DOWNHOLE TELMETRY - A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool. | 12-26-2013 |
20140247133 | System and Method for Downhole Telemetry - A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool. | 09-04-2014 |
20140262530 | Adjustable Mud Motor Housing Assembly - An adjustable housing assembly is provided, which includes a splined housing and an adjusting ring which contain a splined mandrel. The splined mandrel is moveable axially within the housing assembly when disengaged from upstream and downstream portions of a drill string to disengage the mandrel from the splined housing. The splined mandrel is rotatable with the adjusting ring to alter angled interfaces between the components to change the bend angle in the housing. | 09-18-2014 |