standard steam locomotives

The EGR system routes a number of the exhaust gases (6 ? 10%) from the EGR valve, last on the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they cannot burn in the combustion chamber; also, the exhaust gases take up a number of the space which would preferably be taken with the intake air. This reduces the volume of intake air readily available for the combustion process during each Power Stroke; which in turn decreases the peak combustion temperatures. This brings about lower NOx emissions. Flickr:Giorgos Gotsis: For a lot of people, progressing to the gym may be the hardest step. However, some, who did hit the gym, plan to give up because they see no significant result after making long and hard efforts. The problem lies in the fact that hitting the fitness center is not enough. It is necessary to have effective exercise program.