Patent application number | Description | Published |
20090101122 | Multi-Cooler EGR Cooling - A system is described for coordination of Exhaust Gas Recirculation (EGR) flow through and around a plurality of EGR coolers differently depending on operating conditions. | 04-23-2009 |
20100058740 | Managing Reductant Slip in an Internal Combustion Engine - A method for controlling operation of vehicle system including an internal combustion engine and a catalytic emission control device coupled in an exhaust of the engine, the method including delivering, which may include injecting into the exhaust, reductant to the emission control device responsive to vehicle operating conditions, and increasing emission control device inlet-NOx in response to reductant release from the emission control device. | 03-11-2010 |
20110023819 | GLOW PLUG PLACEMENT IN A DIESEL ENGINE - A four-valve per cylinder engine has two intake valves, two exhaust valves and a centrally located fuel injector. Between each adjacent pair of valves is a valve bridge with a point of minimum separation between adjacent valves. In the present disclosure, the glow plug port is defined in the cylinder top at a location outboard of the minimum separation between adjacent and at a depth which is tangent to an edge of a fuel jet emanating the injector. By placing the glow plug farther outboard than found in the prior art, the glow plug contacts the fuel as it comes out of the injector and as it rebounds off a feature of the piston bowl. | 02-03-2011 |
20110023842 | COOLER BYPASS TO REDUCE CONDENSATE IN A LOW-PRESSURE EGR SYSTEM - Various systems and methods are described for an exhaust gas recirculation (EGR) system including an EGR cooler coupled to a turbocharged engine in a vehicle. One example method comprises, under selected operating conditions, controlling a mixture temperature of cooled and uncooled EGR at a mixing location upstream of an intake passage inlet by routing at least a portion of exhaust gas through a bypass around the EGR cooler. | 02-03-2011 |
20110131957 | Methods and Systems for Emission System Control - Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions. | 06-09-2011 |
20110146267 | Methods and Systems for Emission System Control - Methods and systems are provided for operating an engine including an emission control system, the emission control system comprising a catalyst downstream of a turbine of a boosting device and a reductant injector upstream of the turbine. In one example, the method comprises injecting reductant into exhaust upstream of the turbine, mixing the injected reductant with exhaust gas via the turbine, and delivering the mixed reductant to the catalyst. | 06-23-2011 |
20110146268 | Methods and Systems for Emission System Control - Methods and systems are provided for controlling an engine in a vehicle, the engine having a turbocharger, and a particulate filter upstream of a turbocharger turbine. In one example, the method comprises, under selected boosted operating conditions, injecting a reductant upstream of the filter during an exhaust stroke to generate an exothermic reaction at the filter. | 06-23-2011 |
20110146269 | Methods and Systems for Emission System Control - Methods and systems are provided for operating an engine including an SCR catalyst downstream of an exhaust turbine and a particulate filter upstream of the turbine. In one example, the method comprises, adjusting a turbine wastegate to adjust a catalyst temperature to a desired catalyst temperature. | 06-23-2011 |
20120117963 | Methods and Systems for Emission System Control - Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions. | 05-17-2012 |
20130118162 | Methods and Systems for Emission System Control - Methods and systems are provided for operating an engine including an emission control system, the emission control system comprising a catalyst downstream of a turbine of a boosting device and a reductant injector upstream of the turbine. In one example, the method comprises injecting reductant into exhaust upstream of the turbine, mixing the injected reductant with exhaust gas via the turbine, and delivering the mixed reductant to the catalyst. | 05-16-2013 |
20140000242 | METHODS AND SYSTEMS FOR EMISSION SYSTEM CONTROL | 01-02-2014 |
20140222314 | SYSTEM AND METHOD FOR COMPENSATING BIODIESEL FUEL - Methods and systems for adjusting a plurality of fuel injections supplied to a cylinder during a cycle of the cylinder are described. In one example, fuel amounts are adjusted in response to a biodiesel concentration in fuel supplied to an engine. | 08-07-2014 |
20140360163 | SYSTEM AND METHOD FOR CONTROLLING AN ENGINE THAT INCLUDES LOW PRESSURE EGR - Methods and systems for operating an engine that includes a low pressure EGR passage and a selective reduction catalyst are disclosed. In one example, an actuator is adjusted in response to a NOx mass flow rate in the low pressure EGR passage. | 12-11-2014 |