Patent application number | Description | Published |
20140017794 | METHOD AND SYSTEM FOR MITIGATING UREA DEPOSITS WITHIN AN SCR CATALYST SYSTEM - A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH | 01-16-2014 |
20150211466 | SYSTEMS AND METHODS FOR OPTIMIZATION AND CONTROL OF INTERNAL COMBUSTION ENGINE STARTING - An engine starting system and technique include selecting a target engine speed profile from a plurality of engine speed profiles based on operator inputs and operating parameters of the vehicle. A feedback control strategy is used to substantially conform the engine speed with the target speed profile during starting until a target speed is reached in which fueling is initiated to start the engine. | 07-30-2015 |
20150219023 | FUEL SELECTION SYSTEM AND METHOD FOR DUAL FUEL ENGINES - Systems and methods for controlling operation of dual fuel internal combustion engines are disclosed. The control techniques provide for override of a dual fuel mode of operation of the engine by selection of a diesel only fuelling mode in response to one or more operating conditions of the internal combustion engine. | 08-06-2015 |
20150219027 | CYLINDER PRESSURE BASED CONTROL OF DUAL FUEL ENGINES - Systems and methods for controlling operation of dual fuel internal combustion engines in response to cylinder pressure based determinations are disclosed. The techniques control fuelling contributions from a first fuel source and a second fuel source to achieve desired operational outcomes in response to the cylinder pressure based determinations. | 08-06-2015 |
20150240686 | EXHAUST THROTTLE CONTROL FOR AFTERTREATMENT SYSTEM THERMAL MANAGEMENT - Systems, methods and apparatus are disclosed for thermal management of an SCR catalyst in an exhaust aftertreatment system of an internal combustion engine that includes an exhaust throttle but lacks a particulate filter. The thermal management can include interpreting, initiating, and/or completing a thermal management event for the SCR catalyst for removal of contaminants such as hydrocarbons and urea deposits. The thermal management event includes at least one of closing the exhaust throttle and increasing the thermal output of the engine to expose the SCR catalyst to a sufficiently high temperature over a time period that desorbs a sufficient amount of the hydrocarbons and/or removes a sufficient amount of the urea deposits to restore SCR catalyst performance. | 08-27-2015 |
20150252770 | ENGINE START/STOP FUNCTION MANAGEMENT AND CONTROL ARCHITECTURE - Unique apparatuses, systems, methods, and techniques for control of engine systems are disclosed. One embodiment is a unique controls process providing engine start/stop functionality. In one form, the controls process includes engine stop controls which evaluate a plurality of engine stop request conditions and a plurality of engine stop capability conditions, as well as engine start controls which evaluate a plurality of engine start request conditions and a plurality of engine start capability conditions. | 09-10-2015 |
20150328586 | METHOD AND SYSTEM FOR MITIGATING UREA DEPOSITS WITHIN AN SCR CATALYST SYSTEM - A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH | 11-19-2015 |
20150354472 | EXHAUST PARAMETER BASED DUAL FUEL ENGINE POWER VIRTUAL SENSOR - The system comprises a fuel description module structured to provide a first signal, and a control circuit operable to receive the first signal. The fuel description module comprises a fuel consumption detection package. The fuel consumption detection package an intake manifold temperature sensor and an exhaust temperature sensor, wherein the first signal corresponds to a difference between the exhaust manifold temperature (EMT) and the intake manifold temperature (IMT). The control circuit is responsive to the first signal to produce a second signal indicating a total energy content (E | 12-10-2015 |