| Evaporative emission system. | |
| A bearing that supports the camshaft journal. On some engines it is full around and pressed in place. On some OHC overhead cam engine the cam shaft bearing is made up of two shells like a connecting rod bearing. | |
| A device that atomizes air and fuel in a proportion that is burnable in the engine. | |
| A material whose atoms become oxidized Electrically charged in solution. In automobiles, the battery electrolyte is a mixture of sulfuric acid and water. |