| 摘要 |
<p>A coolant pump (26) is utilized with an internal combustion engine (10). The coolant pump has a pump housing (34), an impeller shaft (62), a pump impeller (66), and a damper assembly (68). The housing (34) is fixedly mounted relative to the engine (10). The impeller shaft (62) is mounted directly to the camshaft (18) of the engine so as to be concentrically rotatably driven thereby. The impeller shaft (62) extends into the housing (34) in an unsupported relation, thereby eliminating the use of bearing in the coolant pump. The damper assembly (68) is disposed within the pump housing (34) and is rotatable to dampen torsional vibrations of the camshaft (18).</p> |
