tata engineering & locomotive co ltd

William went on a marvelous journey six hundred years back over time along with his nanny, Mrs. Phillips, inside first book, The Castle in The Attic. He met Sir Simon and defeated the villain, Alastor. This book starts with William being a couple of years older and Mrs. Phillips sent him a birthday present, the charm of Janus used inside the first book. The charm can be used to shrink and un-shrink things, animals, the ones. Then, if these shrunken folk spend the night time in the castle in William's attic, they wake up inside past. The attic is finished, along with a forest is away from castle. The EGR system routes a few of the exhaust gases (6 ? 10%) through the EGR valve, back in towards the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they do not burn in the combustion chamber; also, the exhaust gases undertake a few of the space which may preferably be taken with the intake air. This reduces the quantity of intake air available for the combustion process during each Power Stroke; which decreases the peak combustion temperatures. This results in lower NOx emissions.