car engine design pdf

However, it is not all good news for anyone those people who are always researching the near future seeking the following smartest thing rather than experiencing the present. Although it doesn't have a similar negative effects on the health as the those who are constantly looking back, they will often 't be as content since they overlook what they have and don't take enogh time to benefit from the present. Because of this they too generally less quality lifestyle. 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.