w class locomotive

The EGR system routes a number of the exhaust gases (6 ? 10%) through the EGR valve, back in for the Intake System, and finally inside combustion chamber. The exhaust gases are inert i.e. they do not burn inside the combustion chamber; also, the exhaust gases occupy a few of the space which may otherwise be taken from the intake air. This cuts down on level of intake air readily available for the combustion process during each Power Stroke; which often decreases the peak combustion temperatures. This ends in lower NOx emissions. This picture amazingly captures the think layer of clouds on the valley near the south of Lake Como, northern Italy. In the above image, the dense cloud hides almost the valley and leaves some artificial lights which make the town as an opaque blanket. The village over distance is clearly seen from the blanket. But researchers in the University of Granada have produced a smaller scale study which states that people who dwell on their past aren't just more prone to fall ill and possess a standard poorer total well being, fortunately they are perhaps surprisingly likely to end up more pain sensitive. It's also not just about when they've stood a difficult past ' it is the perception they have got of the past.