identify two characteristics of combustion reactions

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. Of these, you can also use the Windows Classic theme to set the Start menu and taskbar back to a good old Windows XP default look, should you get bored of all the pretty pictures and artistic touches. Also, remember that Windows 7 Starter and Home Basic will not come with these features. Not that this should be a problem for 99.9% of all users. A lot of nutritionists state that as a way to shed off those unwanted pounds, it's really not about eating less, but exercising more. Although this is absolutely true, it doesn't mean that people can eat whatever they like provided that they exercise. In fact, research shows that some meals, especially those purchased in fast-food chains, could actually convey more calories than one could burn in a 30-minute workout. Thus, the need to watch what one eats. Below are the greasiest and most calorie-packed meals of many of the most popular fast-food chains on the planet.