Patent application number | Description | Published |
20130239553 | SYSTEM FOR DETERMINING SULFUR STORAGE OF AFTERTREATMENT DEVICES - An exhaust gas treatment system for an internal combustion engine for determining a total amount of sulfur that is stored on at least one aftertreatment device is provided. The exhaust gas treatment system includes a control module that monitors operation of the internal combustion engine for an amount of fuel consumed and an amount of oil consumed by the internal combustion engine. The control module includes a sulfur adsorption module and a total sulfur storage module. The sulfur adsorption module determines a rate of sulfur adsorption in at least one aftertreatment device. The rate of sulfur adsorption is based on the amount of fuel consumed and the amount of oil consumed. The total sulfur storage module is in communication with the sulfur adsorption module. The total sulfur storage module determines the total amount of sulfur stored based on the rate of sulfur adsorption. | 09-19-2013 |
20150101310 | Exhaust Gas Treatment System Including an Enhanced SCR Diagnostic Unit - Embodiments of the invention include a method for performing diagnostics of a selective catalytic reduction (“SCR”) device in an exhaust gas treatment system of an internal combustion engine. The method includes monitoring an amount of sulfur in the SCR device of the exhaust treatment system and monitoring, by an SCR diagnostics module, an efficiency of the SCR device and indicating when the efficiency of the SCR device falls below an efficiency diagnostics threshold. Based on determining that the amount of sulfur in the SCR device is above a first threshold, the method includes disabling an operation of the SCR diagnostics module. | 04-16-2015 |
20150252709 | SYSTEM AND METHOD FOR CONTROLLING DOSING IN SELECTIVE CATALYTIC REDUCTION CATALYST - An engine assembly includes an exhaust system having a first SCR catalyst, a second SCR catalyst in fluid communication with the first SCR catalyst, and an injector configured to inject reductant into the exhaust system. A controller is configured to estimate a first amount of ammonia stored in the first SCR catalyst and to estimate a second amount of ammonia stored in the second SCR catalyst. The controller is operatively connected to the injector and configured to control the amount of reductant injected by the injector. The controller controls the injector based on the first amount, the second amount, and a temperature of a substrate disposed in the second SCR catalyst. | 09-10-2015 |
Patent application number | Description | Published |
20120028376 | Method of Controlling Critical Dimensions of Trenches in a Metallization System of a Semiconductor Device During Etch of an Etch Stop Layer - When forming metal lines and vias in complex metallization systems of semiconductor devices, an additional control mechanism for adjusting the final critical dimension may be implemented in the last etch process for etching through the etch stop layer after having patterned the low-k dielectric material. To this end, the concentration of a polymerizing gas may be controlled in accordance with the initial critical dimension obtained after the lithography process, thereby efficiently re-adjusting the final critical dimension so as to be close to the desired target value. | 02-02-2012 |
20120028472 | Method of Controlling Critical Dimensions of Vias in a Metallization System of a Semiconductor Device During Silicon-ARC Etch - When forming via openings in sophisticated semiconductor devices, a silicon-containing anti-reflective coating (ARC) layer may be efficiently used for adjusting the critical dimension of the via openings by using a two-step etch process in which, in at least one of the process steps, the flow rate of a reactive gas component may be controlled to increase or reduce the resulting width of an opening in the silicon ARC layer. In this manner, the spread of critical dimensions of vias around the target value may be significantly reduced while also reducing any maintenance and rework efforts. | 02-02-2012 |
20120214305 | Technique for Reducing Plasma-Induced Etch Damage During the Formation of Vias in Interlayer Dielectrics by Modified RF Power Ramp-Up - When performing plasma assisted etch processes for patterning complex metallization systems of microstructure devices, the probability of creating plasma-induced damage, such as arcing, may be reduced or substantially eliminated by using a superior ramp-up system for the high frequency power and the low frequency power. To this end, the high frequency power may be increased at a higher rate compared to the low frequency power component, wherein, additionally, a time delay may be applied so that, at any rate, the high frequency component reaches its target power level prior to the low frequency component. | 08-23-2012 |
20150200131 | TECHNIQUE FOR REDUCING PLASMA-INDUCED ETCH DAMAGE DURING THE FORMATION OF VIAS IN INTERLAYER DIELECTRICS BY MODIFIED RF POWER RAMP-UP - When performing plasma assisted etch processes for patterning complex metallization systems of microstructure devices, the probability of creating plasma-induced damage, such as arcing, may be reduced or substantially eliminated by using a superior ramp-up system for the high frequency power and the low frequency power. To this end, the high frequency power may be increased at a higher rate compared to the low frequency power component, wherein, additionally, a time delay may be applied so that, at any rate, the high frequency component reaches its target power level prior to the low frequency component. | 07-16-2015 |
Patent application number | Description | Published |
20080250868 | Ultrasound Flow Sensor with a Modulo-2Pi for a Remaining Part Tracing - The invention relates to a method for determining the running time (t) of an ultrasound flow sensor ( | 10-16-2008 |
20080271543 | Ultrasonic Flow Rate Meter Having a Pressure Sensor - An ultrasonic flow rate meter and a method for measuring the flow rate with the aid of ultrasound are described, having at least two ultrasonic transducers situated offset in a flow channel in the flow direction for transmitting and receiving ultrasound wave packets, so that ultrasound propagation times from one of the ultrasonic transducers to the other, and vice-versa, can be determined in an electronic part, and having a pressure sensor associated with the flow channel for determining the pressure in the flow channel. Measured values for an engine control that is as accurate as possible are determinable by accurately detecting the incoming air in the intake of a motor vehicle internal combustion engine. | 11-06-2008 |
20100154560 | METHOD FOR MANUFACTURING AN ULTRASONIC TRANSDUCER - A method for manufacturing an ultrasonic transducer for use in a fluid medium. At least one piezoelectric transducer element is joined directly or indirectly to at least one matching member for promoting vibration coupling between the piezoelectric transducer element and the fluid medium. A matching member is used which has at least one porous molding of a polymer. | 06-24-2010 |
20100288055 | TRANSIT TIME CORRECTION IN A FLOW SENSOR - A sensor measures a flow quantity of a medium using a first wave converter and a second wave converter which faces the first wave converter, each of which emits and receives sound waves, and a device calculates the flow quantity on the basis of a first wave transit time from the first wave converter to the second wave converter, and on the basis of a second wave transit time from the second wave converter to the first wave converter. The device includes a unit for limiting the change to the flow quantity. In this manner, and the measurement may be carried out more accurately. | 11-18-2010 |
20110125024 | ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - An ultrasonic transducer for use in a fluid medium includes at least one transducer core having at least one acoustic/electric transducer element. The ultrasonic transducer furthermore includes at least one decoupling element which is configured to reduce a structure-borne noise coupling between the transducer core and a housing. The decoupling element includes at least one porous plastic material, in particular a foamed plastic material. The porous plastic material includes at least one thermosetting polymer and/or at least one thermoplastic. | 05-26-2011 |
20110181322 | Device and method for generating a current pulse - A device for producing a current pulse includes supply terminals for providing a power supply voltage, and a switch which is situated in a control current branch between the supply terminals, which switch is configured to switch a control current through the control current branch as a function of an actuation signal. The device also has a current mirror having a control transistor and a signal transistor, the control transistor being situated in series to the first switch in the control current branch, and the signal transistor being configured to provide the current pulse as a function of the control current through the control transistor. | 07-28-2011 |
20110308317 | METHOD FOR MANUFACTURING AN ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - A method for manufacturing an ultrasonic transducer for use in a fluid medium is described. The ultrasonic transducer includes at least one transducer core having at least one acoustic-electric transducer element. The ultrasonic transducer furthermore includes at least one housing which at least partially surrounds the transducer core and which has at least one opening facing the fluid medium. In the method, at least one sealing film is stretched and connected to the housing in the stretched state in such a way that the sealing film at least partially seals the opening. | 12-22-2011 |
20110314933 | ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - An ultrasonic transducer is described for use in a fluid medium. The ultrasonic transducer includes at least one piezoelectric transducer element and at least one matching element for promoting an oscillation injection between the piezoelectric transducer element and the fluid medium. The ultrasonic transducer also includes a housing ( | 12-29-2011 |
20120038248 | ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - An ultrasonic transducer for use in a fluid medium includes at least one piezoelectric transducer element, at least one matching body for the promotion of a vibrational coupling between the piezoelectric transducer element and the fluid medium, and at least one compensating body situated between the piezoelectric transducer element and the matching body for the reduction of thermal stresses, the compensating body having a coefficient of thermal expansion that is between a coefficient of thermal expansion of the piezoelectric transducer element and a coefficient of thermal expansion of the matching body. | 02-16-2012 |
20120260742 | ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - An ultrasonic transducer for use in a fluid medium is proposed. The ultrasonic transducer includes at least one transducer core which has at least one acoustic/electric transducer element, in particular a piezoelectric transducer element. The ultrasonic transducer furthermore includes at least one housing, at least one housing opening being at least partially sealed against the fluid medium with the aid of a sealing film which is connected to the transducer core. The sealing film has at least one expansion deformation which is configured to permit a relative movement between the transducer core and the housing. | 10-18-2012 |
20120266677 | ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - An ultrasonic transducer for use in a fluid medium includes at least one transducer core having at least one electroacoustic transducer element, and further includes at least one housing having at least two housing parts. At least one first housing part at least partially encloses the transducer core such that a rear side of the electroacoustic transducer element which faces away from the fluid medium is accessible. Furthermore, at least one second housing part is connected to the first housing part. The ultrasonic transducer is essentially terminated by the second housing part on its side, which faces away from the fluid medium. | 10-25-2012 |
20120285260 | Ultrasonic flow sensor for detecting a flow of a fluid medium - An ultrasonic flow sensor for detecting a flow of a fluid medium in a flow tube includes at least one first ultrasonic transducer, at least one second ultrasonic transducer, and at least one waveguide configured to conduct ultrasonic waves between the at least one first ultrasonic transducer and the at least one second ultrasonic transducer by reflection on walls of the waveguide, and to enable the fluid medium to flow through. The ultrasonic waves are able to propagate between the first ultrasonic transducer and the second ultrasonic transducer on at least two ultrasonic paths. Sound energies of the ultrasonic waves transmitted on the at least two different ultrasonic paths differ from one another by no more than a factor of 100. | 11-15-2012 |
20120320713 | ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM - An ultrasonic transducer for use in a fluid medium includes at least one housing having at least one inner space, at least one transducer core accommodated in the inner space, having at least one electroacoustic transducer element. The housing has at least one opening facing the fluid medium. The opening is covered at least partially by at least one sealing foil. An edge of the sealing foil is sealed by at least one sealing material. | 12-20-2012 |
20130014592 | ultrasonic transducer for use in a fluid mediumAANM Mueller; RolandAACI SteinheimAACO DEAAGP Mueller; Roland Steinheim DEAANM Hueftle; GerhardAACI AspachAACO DEAAGP Hueftle; Gerhard Aspach DEAANM Horstbrink; MichaelAACI Stuttgart-FeuerbachAACO DEAAGP Horstbrink; Michael Stuttgart-Feuerbach DEAANM Lang; TobiasAACI StuttgartAACO DEAAGP Lang; Tobias Stuttgart DEAANM Radwan; SamiAACI StuttgartAACO DEAAGP Radwan; Sami Stuttgart DEAANM Kuenzl; BerndAACI SchwieberdingenAACO DEAAGP Kuenzl; Bernd Schwieberdingen DEAANM Wanja; RolandAACI MarkgroeningAACO DEAAGP Wanja; Roland Markgroening DE - An ultrasonic transducer for use in a fluid medium includes at least one housing, e.g., a sleeve, which has at least one interior space, and at least one transducer core having at least one electroacoustic transducer element is accommodated in the interior space. The housing has a housing wall at least partially enclosing the transducer core using at least one hollow space. | 01-17-2013 |