Patent application number | Description | Published |
20100199643 | EXHAUST GAS PURIFICATION SYSTEM - The invention relates to an exhaust gas purification system ( | 08-12-2010 |
20120079822 | METHOD FOR CONTROLLING AN EXHAUST-GAS AFTERTREATMENT DEVICE OF A HYBRID DRIVE, AND HYBRID DRIVE - A method for controlling an exhaust gas aftertreatment device of a vehicle hybrid drive is provided. The method comprises operating the hybrid drive only by a combustion engine, only by a non-combustion motor, or by both, as a function of a temperature of the exhaust aftertreatment device, and conducting exhaust gas of the hybrid drive at least partially through the exhaust aftertreatment device, the engine and motor each providing output to power the vehicle. In this way, the aftertreatment device may be operated at an optimal temperature for conversion performance. | 04-05-2012 |
20120090295 | EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An exhaust system for an internal combustion engine is provided. The engine comprises an exhaust line, at least one exhaust gas aftertreatment device arranged in the exhaust line, and a heat source and a heat sink arranged in separate branches of the exhaust line upstream of the exhaust gas aftertreatment device, an exhaust gas flow rate through each respective separate exhaust branch controlled by at least one flow control device. In this way, the temperature of the exhaust entering the aftertreatment device may be controlled by an amount of exhaust that flows through each branch of the exhaust line. | 04-19-2012 |
20120090296 | METHOD FOR MEASURING THE QUALITY OF AMMONIA INJECTION FOR AN EXHAUST GAS AFTER TREATMENT SYSTEM OF A VEHICLE - A system and method for determining ammonia deposition and controlling an engine is described. In one example, an amount of ammonia deposited in an engine exhaust is determined and the deposited ammonia is purged after the amount of ammonia deposited reaches a threshold level. The method may decrease ammonia use and ammonia emissions from a vehicle. | 04-19-2012 |
20120090297 | METHOD FOR ADAPTING A LEAN NOX TRAP IN AN EXHAUST SYSTEM OF A MOTOR VEHICLE - A method for adapting a lean NOx trap (LNT) in an exhaust system of a motor vehicle is provided. The method comprises if a difference between an estimated NOx concentration and a measured NOx concentration in exhaust downstream of the LNT is greater than a threshold, calculating an adaptation value, the estimated NOx concentration downstream of the LNT based on a kinetic model, and adapting the kinetic model, adjusting one or more operating parameters of the LNT, and indicating an aging state of the LNT based on the adaptation value. In this way, the model may be updated in real time to produce a robust prediction of LNT function. | 04-19-2012 |
20120090582 | EXHAUST SYSTEM AND METHOD FOR MITIGATING DEGRADATION OF COMPONENTS OF A TURBOCHARGED ENGINE WITH EXHAUST GAS RECIRCULATION - A system and method for controlling an engine is described. In one example, an actuator is adjusted to reduce the possibility of degradation of an engine component. The method may provide increase engine component operational life so as to improve engine emissions during the life cycle of the engine. | 04-19-2012 |
20120096837 | METHOD FOR ADAPTING AN SCR CATALYTIC CONVERTER IN AN EXHAUST SYSTEM OF A MOTOR VEHICLE - A method for adapting a kinetic model of a SCR is described. In one example, the kinetic model is adapted for stored ammonia, ammonia release rate, and ammonia storage capacity. The method may be useful for adjusting engine control parameters for the purpose of reducing engine emissions. | 04-26-2012 |
20120102943 | METHOD FOR MONITORING A REGULATED EMISSION CONCENTRATION IN THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINE - A method for monitoring a regulated emissions concentration C, in the exhaust gas of an internal combustion engine is provided. The method comprises directing the exhaust gas through an exhaust-gas turbocharger, directing at least a portion of the exhaust gas through an exhaust-gas recirculation system, measuring an air ratio λ | 05-03-2012 |
20120186227 | PARTICLE SENSOR, EXHAUST SYSTEM AND METHOD FOR DETERMINING PARTICLES IN THE EXHAUST GAS - Embodiments of a particle sensor are provided. In one example, a particle sensor for an exhaust system comprises at least two inlet openings for an exhaust-gas flow of the exhaust system, wherein the inlet openings are of different sizes, and at least two sensor elements, wherein in each case one sensor element is arranged downstream of one inlet opening. In this way, the relative proportion of different-sized particles within the exhaust-gas flow may be determined. | 07-26-2012 |
20120291422 | PARTICULATE FILTER AND ASSOCIATED METHODS FOR EXHAUST PURIFICATION - A particulate filter for a vehicle exhaust system includes a primary filter surrounded by a secondary filter and a quenching agent injection nozzle arranged upstream of the primary filter. In a normal mode, exhaust flows through the primary filter, and in a fail-safe mode or a mixed mode, at least some exhaust flows through the secondary filter and quenching agent is injected via the nozzle to cool the primary filter. The fail-safe or mixed modes may be enacted during an overload of the primary filter, for example. If engine shutdown is initiated during regeneration of the primary filter, a rate of quenching agent injection may be adjusted so that the regeneration may be completed at a safe temperature. | 11-22-2012 |
20120311996 | FILTERING METHOD AND FILTER FOR A NOX SENSOR OF AN EXHAUST GAS SYSTEM - Embodiments for determining NH | 12-13-2012 |
20130008149 | ESTIMATION OF EFFICIENCY FOR AGED CATALYSTS - Systems and methods for estimating an efficiency of a catalyst placed in an exhaust path of a combustion engine are disclosed. In one example approach, a method comprises: ageing the catalyst consecutively at different temperatures for definite time periods; measuring the catalyst conversion efficiency after each ageing step; calculating the ageing factor for each step of the ageing procedure and the accumulative value of the ageing factors for all steps of the ageing procedure; estimating catalyst efficiency correlation factors related to the measured catalyst conversion efficiency for each temperature point and for all ageing conditions; determining a correlation between the catalyst efficiency correlation factors and the accumulative value of the ageing factors; and calculating the conversion efficiency of the aged catalyst based on a predetermined correlation between the accumulative ageing factor and the catalyst efficiency correlation factor. | 01-10-2013 |
20130060454 | METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - Embodiments for heating a catalyst are provided. In one example, a method for controlling an internal combustion engine having an exhaust-gas aftertreatment device during a cold-start phase comprises adjusting a temperature of cooling water to a setpoint operating temperature as a function of a degree of aging of the exhaust-gas aftertreatment device of the internal combustion engine, wherein the temperature of the cooling water is increased more quickly as a present degree of aging of the exhaust-gas aftertreatment device increases. | 03-07-2013 |
20130064744 | HEATED INJECTION SYSTEM FOR DIESEL ENGINE EXHAUST SYSTEMS - Embodiments for injecting reducing agents are provided. In one example, an injection device for feeding reducing agents into an exhaust-gas purification system of an internal combustion engine for reduction of nitrogen oxide emissions comprises an injector, and an evaporation device for evaporating first and second reducing agents, the injection device connected to in each case one storage vessel for the first reducing agent and a storage vessel for the second reducing agent, the first and second reducing agents liquid at room temperature. | 03-14-2013 |
20130174546 | Controlling Fresh Air and Exhaust Gas Flow in Turbocharged Internal Combustion Engine - An internal combustion engine has a cylinder and an exhaust-gas turbocharger comprising a compressor arranged in an intake system and a turbine arranged in an exhaust-gas discharge system. Various lines are provided for conducting gases including 1) a bypass line branching off from the inlet system downstream of the compressor so as to form an inlet-side junction, and 2) a recirculation line branching off from the exhaust-gas discharge system upstream of the turbine so as to form an outlet-side junction which opens into the bypass line. A first control element at the outlet-side junction adjusts an exhaust-gas quantity conducted through the recirculation line. A second control element at the inlet-side junction has a first position that separates the bypass line from the cylinder and connects the intake line to the cylinder, and a second position that separates the intake line from the cylinder and connects the bypass line to the cylinder. | 07-11-2013 |