The sub-pump is a pump for reducing the pressure in the seal gas exhaust channel.

The invention relates to a device for exhaust gas recirculation, comprising an exhaust gas feed channel attached to an intake duct (10).

The inner tube (1) conducts the exhaustsgases while the channel (11) conducts cooling water separately from the exhaust gases.

The ionization stage and collector for an exhaust gas purification system are sectionally limited components of an exhaust gas duct.

The mixing chamber (70) is arranged directly at an area of the exhaust gas channel (20) that conducts exhaust gas.

In the third case unit (72), an exhaust gas channel (76) as a passage of an exhaust gas is provided.

Said engine exhaust gas purification catalyst (2) is disposed in an exhaust gas flow passage in an exhaust gas inflow section.

The injector is mounted on an exhaust conduit in fluid communication with the exhaust gases.

The combustor includes a central combustion region with openings to a reactant gas channel and an exhaust gas channel.

The exhaust gas channel system(20) has an upstream channel (54), an outlet channel (58) and a gas recycling channel (28).

The exhaust after-treatment system may include an exhaust passageway in communication with the engine, and an exhaust treatment component provided in the exhaust passageway.

The method also provides for the retention and building up of waste gas and for an activation injection into the retained waste gas.

According to the inventive method, exhaust gas (2) flowing into the device is heated up in heat exchange with outflowing exhaust gas and heat is supplied to the exhaust gas.

When the exhaust throttle valve (30A-30D) is actuated, the valve obstructs the flow of exhaust gas (F) and increases the temperature of the exhaust gas.

It is therefore proposed to arrange a first exhaust-gas mass flow sensor (24) in the low pressure exhaust gas recirculation channel (10).