Medically reviewed by Jeffrey S. Lander, MD Heart sounds are the noises made as blood moves through the heart with each ...

But if that valve is located in a bowl-shaped combustion chamber, the curving surface of the chamber itself acts as half-a-diffuser, just as did the half-a-cone stuck into the bare exhaust port of ...

Both pistons and valves move in and out of a space at the top of engine cylinders known as the “combustion chamber”.

Q. I have a leaky heart valve that may need surgery down the road. Can you tell me about heart-valve surgery in one of your columns? A. First, let’s explain briefly how the heart works.

Berryman offers solutions to mitigate this problem in all gasoline-burning engines, and for that reason, we’ve named their Intake Valve and Combustion Chamber Cleaner and B-12 Chemtool Total ...