Patent application number | Description | Published |
20100199742 | SYSTEM AND METHOD FOR INCREMENTALLY FORMING A WORKPIECE - A system and method for incrementally forming a workpiece. A first manipulator is configured to move a first tool in multiple directions along a first surface of a workpiece. A second manipulator is configured to move a second tool in multiple directions along a second surface of the workpiece. The first and second tools move along first and second predetermined paths of motion and exert force to form the workpiece. | 08-12-2010 |
20120011915 | METHOD OF INCREMENTAL FORMING WITH SUCCESSIVE WRAP SURFACES - A method of incrementally forming a workpiece. The method includes incrementally forming a first monotonic wrap surface in a first direction and incrementally forming a second wrap surface in a second direction disposed opposite the first direction. | 01-19-2012 |
20120024034 | Method to Improve Geometrical Accuracy of an Incrementally Formed Workpiece - A method of incrementally forming a workpiece. The method may include incrementally forming a stiffening feature on the workpiece and incrementally forming a part on the workpiece. A gap between forming tools may be decreased to reform the part. | 02-02-2012 |
20130268243 | PSEUDO-PHYSICAL MODELING OF DRAWBEAD IN STAMPING SIMULATIONS - The stamping of a metal sheet within a stamping die is simulated. The die includes a drawbead running perpendicular to a draw direction. A plurality of successive states are generated for iteratively representing the metal sheet from a blank shape to a final stamped shape. The drawbead is represented as a two-dimensional flat band within a model of the stamping die. Forces acting on the metal sheet are calculated at each successive state to define a next successive state. The calculating step includes a restraining force of the drawbead acting on the metal sheet calculated in response to a predetermined function of a length of the metal sheet engaged in the flat band in respective states. The particular width and location of the flat band achieve improved accuracy of estimating the restraining force. | 10-10-2013 |
20140283571 | Method to Improve Geometrical Accuracy of an Incrementally Formed Workpiece - A method of incrementally forming a workpiece. The method may include incrementally forming a stiffening feature on the workpiece and incrementally forming a part on the workpiece. A gap between forming tools may be decreased to reform the part. | 09-25-2014 |
Patent application number | Description | Published |
20110011067 | Ash Filter, Exhaust Gas Treatment System Incorporating the Same and Method of Using the Same - An ash filter for a reciprocating piston internal combustion engine is disclosed. The ash filter includes a substrate, such as a honeycomb monolith substrate or a plurality of particulate substrates, and a matrix of a zeolite material disposed on the respective substrate or substrates, the matrix of the zeolite material configured to remove ash from an exhaust gas flow from a reciprocating piston internal combustion engine. An exhaust treatment system for a reciprocating piston internal combustion engine is disclosed. The exhaust treatment system includes an ash filter comprising a matrix of a first zeolite and configured to receive an exhaust gas flow from an engine; and an exhaust treatment device, the exhaust treatment device comprising a matrix of a second zeolite and configured to receive the exhaust gas flow from the ash filter. | 01-20-2011 |
20110011068 | Exhaust Gas Treatment System - An emission treatment system for a vehicle having an internal combustion engine is disclosed. The emission treatment system has an HC-SCR catalyst including a non-Pt group metal dispersed in a ceramic matrix configured to receive an exhaust gas flow from an engine. The system also has an oxidation catalyst comprising a Pt group metal configured to receive the exhaust gas flow from the HC-SCR catalyst. The system also has a U-SCR catalyst and a diesel particulate filter, one of the U-SCR catalyst or the DPF configured to receive the exhaust gas flow from the oxidation catalyst and the other one of the U-SCR catalyst or the diesel particulate filter configured to receive the exhaust gas flow from the respective one. | 01-20-2011 |
20110061372 | INTRUSIVE SCR EFFICENCY TESTING SYSTEMS AND METHODS FOR VEHICLES WITH LOW TEMPERATURE EXHAUST GAS - An exhaust diagnostic system includes an exhaust gas temperature management module that selectively increases a temperature of a selective catalytic reduction (SCR) catalyst to a predetermined testing temperature range using an intrusive exhaust gas temperature management approach. An SCR efficiency testing module estimates an efficiency of the SCR catalyst while the temperature is within the predetermined temperature range. | 03-17-2011 |
20120186226 | APPARATUS AND METHOD FOR ONBOARD PERFORMANCE MONITORING OF OXIDATION CATALYST - A method and system for determining conversion of NO to NO | 07-26-2012 |
20120204541 | EXHAUST MIXER ELEMENT AND METHOD FOR MIXING - According to one aspect of the invention, a mixer element to be placed between an internal combustion engine exhaust manifold and catalytic converter is provided. The mixer element includes a tubular conduit that receives an exhaust gas flow from the internal combustion engine, a first mixer configured to induce a first vortex of the exhaust gas flow in a first rotational direction and an injector disposed in the tubular conduit downstream of the first mixer, the injector being configured to inject a diesel emission fluid flow into the exhaust gas flow. The mixer element also includes a second mixer positioned downstream of the injector and a third mixer positioned downstream of the second mixer, the third mixer being configured to induce a second vortex of the exhaust gas flow and the diesel emission fluid mixture in a second rotational direction, opposite of the first rotational direction. | 08-16-2012 |
20120258015 | EXHAUST TREATMENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An exhaust system for an engine comprises a selective catalytic reduction (“SCR”) device having a NO | 10-11-2012 |
20140147339 | DIESEL OXIDATION CATALYST AGING LEVEL DETERMINATION USING NOX SENSOR NO2 INTERFERENCE - A method of determining aging of a diesel oxidation catalyst (DOC) in an engine exhaust system includes receiving a first sensor signal from a first nitrogen oxides (NOx) sensor positioned in exhaust flow upstream of the DOC. The first sensor signal is indicative of an amount of NOx in the exhaust flow upstream of the DOC. The method further includes receiving a second sensor signal from a second NOx sensor positioned in exhaust flow downstream of the DOC. The second sensor signal is indicative of an amount of NOx downstream of the DOC. A difference between the first sensor signal and the second sensor signal is calculated via a controller. A DOC aging level based on a predetermined correlation between the difference and DOC aging is then determined by the controller. | 05-29-2014 |
20140360165 | SELECTIVE CATALYTIC REDUCTION DEVICE MONITORING SYSTEM - A selective catalytic reduction (SCR) device monitoring system includes an engine out NOx monitoring module, an SCR out NOx monitoring module configured and disposed to monitor NOx released from the SCR device, and a NOx storage model module operatively connected to the engine out NOx module and the SCR out NOx monitoring module. The NOx storage model module is configured and disposed to determine an amount of NOx stored in the SCR device. A consumed ammonia correction model module is operatively coupled to the NOx storage model module and configured and disposed to calculate a corrected consumed ammonia prediction factor. | 12-11-2014 |
20150238903 | EFFICIENT LEAN NOX TRAP REGENERATION WITH ENCHANCED AMMONIA FORMATION - A method is disclosed of providing a fuel efficient regeneration of an exhaust after-treatment (AT) system that includes a lean oxides of nitrogen (NO | 08-27-2015 |