During this time, Klum was supported by the singer Seal especially when she gave birth to her child with Briatore, Helene. Heidi Klum's second baby - with Seal Seal soon proposed to Heidi and were married in a seaside ceremony.
Exhaust gas recirculation (EGR) is a system that takes exhaust gas from a dieselâs exhaust manifold and reintroduces it into the intake of the engine to reduce the combustion chamber temperature.
Save. In the early 1970s, automobile manufacturers began equipping their vehicles with EGR (exhaust gas recirculation) valves to reduce the levels of pollutants created by their vehicles. At high temperatures, oxygen and nitrogen combine to form nitrogen oxide, which is considered one of the main components of smog. EGR valves help to reduce the amount of nitrogen oxide produced by automobile engines by lowering the temperature of the combustion process in an engine.