battle of britain class locomotives

The EGR system routes many of the exhaust gases (6 ? 10%) through the EGR valve, last on the Intake System, and in the end in the combustion chamber. The exhaust gases are inert i.e. they don't burn within the combustion chamber; also, the exhaust gases use up a number of the space which could preferably be taken with the intake air. This decreases the volume of intake air available for the combustion process during each Power Stroke; which experts claim decreases the peak combustion temperatures. This leads to lower NOx emissions. The event takes place in English Bay at 10:00 PDT on four nights, beginning on the Wednesday and ending on a Saturday, on the two week period during July and August. Each of the four performances have no less than a three-day separation for preparation for an additional competitor. Three companies representing their countries perform a twenty-five minute firework display set to music. A grand finale is performed on the last day by each of the competitors.