Patent application number | Description | Published |
20120004825 | Method for the Operation of an Internal Combustion Engine Comprising an Emission Control System that Includes an SCR Catalyst - A method for operating an internal combustion engine comprising an exhaust gas cleaning system that includes a SCR catalyst. In conjunction with a cold start and/or a warm-up of the internal combustion engine, the internal combustion engine is operated using a cold start engine operation method having predefineable values for predefineable operating parameters of the internal combustion engine. An amount of nitrogen oxides stored in the SCR catalyst is estimated, and the cold start engine operation method is activated when the estimation indicates that the nitrogen oxide storage amount exceeds a predefineable nitrogen oxide storage amount limit value. | 01-05-2012 |
20120004833 | Method for Operating an Internal Combustion Engine with an Emission Control System - A method for operating an internal combustion engine comprising an emission control system that includes at least one catalytic and/or filter-effective emission control component. In conjunction with a cold start and/or a warm-up of the internal combustion engine, the internal combustion engine is operated using a cold start engine operation process having predefined values for predefined operating parameters of the internal combustion engine. An amount of hydrocarbons (HC) stored in one or more of the at least one emission control component is estimated, and the cold start engine operation process is activated when the estimation indicates that the amount of stored HC exceeds a predefined maximum amount of stored HC. | 01-05-2012 |
20120060502 | Clausius-Rankine cycle - In a Clausius-Rankine cycle, in particular for mobile applications, comprising a pump for circulating a liquid working fluid in the Clausius-Rankine cycle and pressurizing the working fluid, a heating device for vaporizing the pressurized liquid working fluid and an expansion device for generating mechanical driving power by expanding the hot, compressed vaporized working fluid, a condenser device for condensing the hot, expanded vaporized working fluid is provided to form again liquid working fluid and the condenser device includes integrated therein a collection volume for collecting and storing liquid working fluid. | 03-15-2012 |
20130219886 | EXHAUST GAS RECIRCULATION ARRANGEMENT WITH CONDENSATE DISCHARGE - In an exhaust gas recirculation arrangement in which condensate is discharged from an exhaust gas recirculation path of an internal combustion engine, in particular of a motor vehicle, wherein, due to a pressure difference between a condensate collection region arranged in the EGR path and a condensate discharge region, collected condensate is discharged at least partially from the condensate collection region into the condensate discharge region, when the pressure level prevalent in the condensate collection region is greater than in the condensate discharge region in a secure manner and with low environmental impact. | 08-29-2013 |
20130291536 | INTERNAL COMBUSTION ENGINE - An internal combustion with a fresh air supply system, and an exhaust gas system including an exhaust gas turbocharger, which has a turbine arranged in the exhaust gas system and a compressor arranged in the fresh air supply system and a high-pressure exhaust gas recirculation pipe extending from the exhaust gas system upstream of the turbine to a point of the fresh air supply system downstream of the charge air cooler, and a low pressure exhaust gas recirculation pipe extending from a point of the exhaust gas system downstream of the turbine to a point of the fresh air supply system upstream of the compressor and a condensate collection device arranged in the fresh air supply system at, or downstream of, the connecting point of the high pressure recirculation line to the fresh air supply system for the removal of condensate. | 11-07-2013 |
20130318967 | WASTE HEAT RECOVERY DEVICE - In an axial piston expander for a waste heat recovery device of a motor vehicle, the expander having a shaft with an axis of rotation around which a number of cylinders are arranged parallel to, and distributed around, the axis of rotation, each cylinder including a piston connected to a coupling plate which is pivotally mounted on the shaft so as to provide for an adjustable piston stroke and the cylinders having high pressure inlets and low pressure outlets with valve devices for the control of the operating fluid flow through the cylinders, a stroke adjustment arrangement is provided by which the stroke of the pistons is adjustable via a regulation of the pressure in an operating chamber at the back side of the pistons, the waste heat recovery device being coupleable with the drive train of the internal combustion engine for the transfer of mechanical driving power. | 12-05-2013 |
20130327041 | WASTE HEAT UTILIZATION DEVICE AND OPERATING METHOD - In a waste heat utilization arrangement for an internal combustion engine of a motor vehicle including a waste heat utilization circuit in which a working medium is circulated, a pumping device for pressurizing the working medium, an evaporator for vaporizing the working medium by waste heat of the internal combustion engine, an expansion machine for expanding the working medium while extracting mechanical energy therefrom and a condenser for condensing the working medium in a resting state, the waste heat utilization circuit is in communication with a pressure store capable of maintaining a pressure for setting and ensuring a predetermined adjustable minimum pressure of the working medium in the waste heat utilization circuit. | 12-12-2013 |
20140060008 | Method for Operating a Motor Vehicle Internal Combustion Engine with an Exhaust Particle Filter - A method for operating a motor vehicle internal combustion engine with an exhaust system branch in which a wall-flow exhaust particle filter is arranged. An amount of ash and an amount of soot accumulated in the exhaust particle filter are continuously determined. An ash increase value characterizing an increase in the amount of ash is determined and if pre-set conditions are present, the operation of the internal combustion engine is changed over to a special operating mode for performing an ash detachment and transportation operation, in which operating variables of the internal combustion engine are set such that, on the exhaust entry side in the exhaust particle filter, a pre-settable minimum exhaust flow speed results at which detachment of ash attached to the channel walls of the exhaust particle filter and transportation of detached ash in the direction of the respective inlet channel end is made possible. | 03-06-2014 |