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US 9,410,461 B2Granted
Internal combustion engine
AssigneeAVL List GmbH
InventorThomas Obenaus
Life of this patent
Estimating the term…
Abstract
An internal combustion engine, in particular a large multi-fuel diesel internal combustion engine, and includes an SCR catalytic converter that can be bypassed, and at least one control element for switching the flow in an exhaust gas line between a first position where the SCR catalytic converter is active and a second position where the SCR catalytic converter is bypassed, and at least one flow path bypassing the SCR catalytic converter.
Claims17
An internal combustion engine, comprising:
- a bypassable SCR catalytic converter;
- and
- at least one control element to switch a flow of an exhaust gas line between a first position where the SCR catalytic converter is active and a second position where the SCR catalytic converter is bypassed;
- at least one bypass flow path which bypasses the SCR catalytic converter, said flow path bypassing the SCR catalytic converter and configured as an annular space between concentric pipes including an inner pipe and an outer pipe, in which the SCR catalytic converter is located in the inner pipe, wherein a first inlet pipe connects to the inner pipe, and a second inlet pipe connects to the at least one bypass flow path, with the first inlet pipe partly running inside the second inlet pipe;
- a first control element provided in the first inlet pipe;
- and
- an additive metering device located in the first inlet pipe, wherein the additive metering device is located upstream of the first control element.
4 more elements
A multi-fuel diesel internal combustion engine, comprising:
- a bypassable SCR catalytic converter;
- and
- at least one control element to switch a flow of an exhaust gas line between a first position where the SCR catalytic converter is active and a second position where the SCR catalytic converter is bypassed;
- at least one bypass flow path which bypasses the SCR catalytic converter, said flow path bypassing the SCR catalytic converter and configured as an annular space between concentric pipes including an inner pipe and an outer pipe, in which the SCR catalytic converter is located in the inner pipe, wherein a first inlet pipe connects to the inner pipe and a second inlet pipe connects to the at least one bypass flow path, with the first inlet pipe partly running inside the second inlet pipe;
- a first control element provided in the first inlet pipe;
- and
- an additive metering device located in the first inlet pipe, wherein the additive metering device is located upstream of the first control element.
4 more elements
An internal combustion engine, comprising:
- a bypassable SCR catalytic converter;
- and
- at least one control element to switch a flow of an exhaust gas line between a first position where the SCR catalytic converter is active and a second position where the SCR catalytic converter is bypassed;
- at least one bypass flow path which bypasses the SCR catalytic converter, said flow path bypassing the SCR catalytic converter and configured as an annular space between an outer pipe and a concentrically arranged inner pipe in which the SCR catalytic converter is located;
- a first inlet pipe connected to the inner pipe;
- a second inlet pipe connected to the at least one bypass flow path, wherein the first inlet pipe partly runs inside the second inlet pipe;
- and
- a first control element provided in the first inlet pipe.
5 more elements
Dependencies are inferred from the claim text.