eye exercises to strengthen vision

The EGR system routes a number of the exhaust gases (6 ? 10%) through the EGR valve, back in for the Intake System, and finally inside combustion chamber. The exhaust gases are inert i.e. they do not burn inside the combustion chamber; also, the exhaust gases occupy a few of the space which may otherwise be taken from the intake air. This cuts down on level of intake air readily available for the combustion process during each Power Stroke; which often decreases the peak combustion temperatures. This ends in lower NOx emissions. The manual wheelchair has been around use for many years and has gone through many changes. The constant feature has been that this chair is self propelled by pushing for the hand edges that surround the wheels. The owner actually pushes the wheels around and around to get in one location to another. In addition to that, the footrests with a manual wheelchair is easy to remove and the user can walk the chair forward together with his feet.