Avl List Gmbh

Iveco S.p.a.

Fpt Industrial S.p.a.

Fpt Motorenforschung Ag

Mahle Amovis Gmbh

Wingd Ag

Fabio Cococcetta

Klemens Neunteufl

Michael Bucher

Michael Glensvig

Harald Fessler

Gerald Gradwohl

Thomas Eckhardt

Ivan Calaon

Helmut Altendorfer

Oswald Lackner

Dimitrios Tsinoglou

Christian Ziegler

An ATS includes an SCR device and is connected to an internal combustion engine so as to receive an exhaust gas flow from at least one cylinder of the internal combustion engine when fuel is injected and combusted in such cylinder; an NH3 storage is increased in such SCR device after an engine shut off command has been detected, such that an increased NH3 storage is ready for a subsequent cold start of the internal combustion engine; the increase of NH3 storage is carried out by injecting a reducing agent in the ATS and by supplying an air flow towards the SCR device; such air flow flows through the cylinder after the fuel injection has been shut off.

Method and system for managing an active selective catalyst reduction device of an after treatment system

The invention relates to a method for controlling a waste-heat utilization system () for an internal combustion engine () of a vehicle, wherein the waste-heat utilization system () has at least one expander (), which can transmit torque to the internal combustion engine () and which can be bypassed by means of a bypass flow path (), at least one evaporator (), and at least one pump () for an operating medium, and wherein at least the evaporator () is arranged in the region of the exhaust gas system () of the internal combustion engine (). The expander (), which can be operated in several operating modes, has a driving connection to a secondary drive shaft () of the internal combustion engine in at least one operating mode. An operating mode of the waste-heat utilization system () is selected by a control device () on the basis of at least one input variable and the waste-heat utilization system () is operated in said operating mode. The input variable is selected by the control device () from the group consisting of expander rotational speed (n), gear information (GI), coasting information (CI), and pressure (p, p) and temperature (T, T) of the operating medium upstream or downstream of the expander (). A first operating mode () is associated with a warm-up phase of the expander () and a second operating mode () is associated with a normal operating phase of the expander (). In the first operating mode, the bypass flow path () is opened and the expander () is not connected to a secondary drive shaft () of the internal combustion engine (). In the second operating mode, the bypass flow path () is closed and the expander () is connected to the internal combustion engine (). The second operating mode () is selected if the pressure (p) and/or the temperature (T) of the operating medium downstream of the expander () exceeds a defined value.

Method for controlling a waste heat utilization system for an internal combustion engine

The invention relates to a method for detecting an unsealed location in a heat recovery system () of an internal combustion engine () of a motor vehicle. The heat recovery system () has at least one combustible working medium, a working medium circuit () with at least one EGR evaporator (), a pump (), and at least one expansion machine (). The aim of the invention is to allow an early and reliable detection of leakages in the EGR evaporator () of a heat recovery system () in the simplest manner possible. This is achieved in that the internal combustion engine () is operated in the overrun mode, the oxygen concentration in the exhaust gas is ascertained and compared with a defined lower threshold, and if the lower threshold is undershot, a leakage in the EGR evaporator () is detected.

Method for detecting an unsealed location in a heat recovery system of an internal combustion engine

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Zurich, Switzerland

Fabio Cococcetta