Patent application number | Description | Published |
20090077954 | CONTINUOUSLY REGENERATING PARTICULATE FILTER FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine system having a non-catalyzed particulate filter receiving products of combustion at a temperature of frequently above 600° C. and an excess of oxygen of between 0.5 and 0.8% from a stoichiometric diesel engine. A NO | 03-26-2009 |
20100071364 | STOICHIOMETRIC COMPRESSION IGNITION ENGINE WITH INCREASED POWER OUTPUT - A stoichiometric compression ignition engine has a turbocharger coupled to it so that the exhaust from the engine feeds the turbine and the compressor provides combustion air past a throttle and intercooler to the engine intake manifold. An exhaust after treatment device is positioned before the exhaust of the engine. A power turbine is connected in parallel relation to the turbocharger turbine and is controlled by a valve to operate the power turbine whenever either the turbocharger compressor boost or the turbocharger turbine back pressure exceed given limits. The power turbine is connected by a power transmission device to either couple to the engine output or to an electrical generator. An EGR loop may be driven by a pump also connected to the power turbine to lower in cylinder pressures. | 03-25-2010 |
20110179771 | METHOD FOR REGENERATION OF DIESEL PARTICULATE FILTER IN AN EXHAUST AFTERTREATMENT SYSTEM OF AN IC ENGINE - A method for regenerating a DPF in an exhaust aftertreatment system includes the steps of: monitoring a temperature of exhaust associated with a DOC; retarding an injection of fuel into at least one combustion cylinder, and thereby intentionally causing a misfire in the at least one combustion cylinder, dependent on the monitoring step; increasing an outlet temperature of the exhaust from the DOC to a first threshold temperature; and oxidizing particulates within the DPF when the exhaust is at the increased temperature. The number and/or frequency of the misfires is controlled to provide the desired exhaust temperature at the DPF inlet. | 07-28-2011 |
20110184631 | NOx CONTROL DURING LOAD INCREASES - A method of controlling a diesel engine connected to a load, the method including the steps of detecting an increased torque requirement and matching a fuel flow with an airflow. The detecting an increased torque requirement step detects an increased torque requirement for the engine, the increased torque requirement taking place during a period of time. The matching a fuel flow step matches a fuel flow with an airflow going to the engine during the increased torque requirement, the matching step keeps the airflow and the fuel flow during the period of time at a substantially stoichiometric level enabling the use of a three-way catalyst to reduce NOx emissions during transients. | 07-28-2011 |
20110259306 | HIGH FLOW EGR SYSTEM - A high flow EGR system for an internal combustion engine having a pair of series connected EGR coolers and a water droplet condensation collector and reservoir connected to the gas flow. The reservoir feeds a pump which is actuated to inject the liquid to the engine adjacent each cylinder for uniform distribution of the water to the engine cylinders. The pump is controlled to inject the water at appropriate conditions during the engine operating cycle. | 10-27-2011 |
20110271662 | COMPACT REDUCTION AGENT DOSER FOR USE IN AN SCR SYSTEM OF AN INTERNAL COMBUSTION ENGINE - An SCR system for use with an IC engine includes a reduction agent doser and a catalytic reactor. The reduction agent doser includes a tubular housing with an inside diameter. A target plate is positioned crosswise in the housing and terminates at a distance from the inside diameter of the housing. The target plate directs a flow of exhaust gas in a radially outward direction. A baffle is positioned crosswise in the housing downstream from the target plate. The baffle terminates at the inside diameter of the housing and includes a center opening for directing a flow of exhaust gas in a radially inward direction. A diffuser plate is located downstream from the baffle. The diffuser plate terminates at the inside diameter of the housing. A catalytic reactor is directly coupled with a downstream side of the reduction agent doser. | 11-10-2011 |
20120067032 | PARTICULATE FILTER REGENERATION - A power system, including a multi-cylinder air breathing, fuel consuming diesel engine having a manifold with a common inlet for distributing combustion air to a plurality of cylinders. A valve is positioned in the intake manifold to at least restrict air flow to a group of the cylinders of the engine less than the total number of cylinders so as to increase the load and increase the temperature of exhaust gas for facilitating regeneration of a particulate filter. | 03-22-2012 |
20140116404 | Power System Comprising A Condensation Injection System - Disclosed is a power system comprising a condensation injection system positioned downstream of an EGR cooler. The condensation injection system comprises a condensation pump and a condensation injector. The condensation injector is positioned downstream of the condensation pump. The condensation pump is configured to pump the condensation to the condensation injector, and the condensation injector is configured to inject the condensation into the intake gas, the intake gas being a combination of a fresh intake gas and a recirculated portion of an exhaust gas. | 05-01-2014 |
20150063988 | Power System Including a Variable Geometry Turbocompound Turbine - Disclosed is a power system having a turbocharger, a VG turbocompound turbine, and a controller. The turbocharger has a turbine coupled to a compressor, and the VG turbocompound turbine positioned downstream of the turbine relative to a direction of a flow of an exhaust gas flowing through the turbine and the VG turbocompound turbine. The controller sends a signal to adjust a geometry of the VG turbocompound turbine so as to adjust a boost level being provided by the turbocharger. | 03-05-2015 |
20150192094 | Power System Comprising an EGR System - A power system including an engine, an intake system, an exhaust system, and an EGR system. The intake system is coupled to the engine and receives a fresh intake gas, the fresh intake gas having a fresh intake gas pressure. The exhaust system is coupled to the engine and expels an exhaust gas, the exhaust gas having an exhaust gas pressure. The EGR system is positioned so as to couple the intake system and the exhaust system. The EGR system does not comprise an EGR cooler. The EGR system bypasses periodically a portion of the fresh intake gas around the engine, from the intake system to the exhaust system, when the fresh intake gas pressure is greater than the exhaust gas pressure. | 07-09-2015 |
20160053712 | Piston for Use in an Engine - A piston having an outer surface and a bottom surface. The bottom surface comprises a convex region, a concave region, and a circumferential edge. The convex region is intersected by a longitudinal piston axis defined by the piston. The convex region is radially inward of and in contact with the concave region, the concave region is radially inward of an in contact with the circumferential edge, and the circumferential edge is radially inward of and in contact with the outer surface. | 02-25-2016 |
20160053713 | Piston for Use in an Engine - A piston for use in an engine. The piston includes a sidewall, a bowl, a tapered surface, and an outer surface. The tapered surface is positioned radially outward relative to the bowl, and the outer surface contacts the sidewall and is positioned radially outward relative to the tapered surface. The tapered surface extends between the bowl and the outer surface, such that the tapered surface contacts the bowl at a radially inward location and contacts the outer surface at a radially outward location. The sidewall faces radially outward to mate with a cylinder of the engine. | 02-25-2016 |
Patent application number | Description | Published |
20080276603 | PARTICULATE FILTER REGENERATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A particulate filter regeneration system for an internal combustion engine includes a plurality of combustion cylinders, an intake manifold and an exhaust manifold. The particulate filter regeneration system includes a particulate filter adapted for communication with the exhaust manifold, a flame heater adapted for communication with the intake manifold, and a temperature indicator for providing an indication of a temperature associated with the exhaust manifold. A controller is coupled with the temperature indicator and the flame heater. The controller actuates the flame heater dependent upon a particulate filter regeneration indicator and a signal from the temperature indicator indicating a temperature of less than approximately 300° C. | 11-13-2008 |
20080282676 | COMPACT SYSTEM FOR ADDING HYDROCARBONS TO THE EXHAUST OF AN INTERNAL COMBUSTION ENGINE - A compact system for introducing hydrocarbons in the form of engine fuel into the bearing housing for a turbocharger adjacent the turbine wheel shaft. The hydrocarbons are directed outward by centrifugal force and are vaporized by the heat of the impeller. As a result the hydrocarbons are available substantially immediately after the turbine to interact with a catalyst to increase the temperature of the exhaust stream for regeneration of a diesel particulate filter. | 11-20-2008 |
20080288157 | HIGH EFFICIENCY STOICHIOMETRIC INTERNAL COMBUSTION ENGINE SYSTEM - A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow. | 11-20-2008 |
20090151328 | INTERNAL COMBUSTION ENGINE WITH DUAL PARTICULATE TRAPS AHEAD OF TURBOCHARGER - An internal combustion engine includes a turbocharger having a turbine, a first set of combustion cylinders, and a second set of combustion cylinders. A first particulate trap is in fluid communication between the first set of combustion cylinders and the turbine. A second particulate trap is in fluid communication between the second set of combustion cylinders and the turbine. | 06-18-2009 |