| 摘要 |
<p>A heated element mass air flow meter (10) includes a cylinder (20) having a surface (21) with an area of stagnation (22). Element (11) is positioned aft of area of stagnation (22) and forward of a downstream area of turbulence (23). Deposition of air born dirt takes places at the stagnation area because dirt particles have a greater density and inertia than air and cannot turn as easily. The air passing the element has been substantially separated from air born dirt and carries less dirt than the remainder of the air stream. The accuracy of heated element meters is reduced by deposition of dirt on the element. A configuration as described reduces the amount of dirt striking the heated element (11) and improves accuracy of the meter.</p> |
