Method for recirculating a partial exhaust gas flow to an internal combustion engine of a motor vehicle
AssigneeSiemens Aktiengesellschaft
InventorsThomas Hannewald, Eckhart Kern
Life of this patent
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Abstract
In the present method, a partial flow is guided through a partial flow line connected downstream of an exhaust gas outlet of an internal combustion engine, and is immediately thereafter supplied to an internal combustion engine either via a first valve, a bypass line which is connected directly downstream and a recirculation line. Alternatively, the partial exhaust gas flow can be supplied to the internal combustion engine via a second valve, a radiator which is connected directly downstream and a recirculation line. The first valve and the second valve are opened or closed as a function of the exhaust gas conditions, this being monitored by a sensor. A device for carrying out the method is also disclosed.
Claims7
A method for recirculating a partial exhaust gas flow to an internal combustion engine of a motor vehicle, comprising the steps of:
- guiding the partial flow though a partial flow line connected downstream of an exhaust gas outlet of the internal combustion engine,
- supplying the partial flow immediately thereafter to the internal combustion engine either via a first valve, a bypass line which is connected directly downstream and a recirculation line or via a second valve, a radiator which is connected directly downstream and a recirculation line,
- opening or closing the first valve and the second valve as a function of the exhaust gas conditions, and
- monitoring the opening and closing with a sensor.
A device for recirculating a partial exhaust gas flow to an internal combustion engine of a motor vehicle,
- a partial flow line;
- a first and second valve connected to the partial flow line;
- a recirculation line connected to the first valve by means of a bypass line;
- a radiator arranged to connect the second valve directly downstream to the recirculation line, and
- a sensor to monitor actuation of the first valve and of the second valve as a function of the exhaust gas conditions.
Dependencies are inferred from the claim text.