| 摘要 |
In order to determine the occurrence of a backflow in a rapidly pulsating fluid current flowing with a known mass flow, especially in the intake (10) of an internal combustion engine, an apparatus for determining the direction of flow having one electrically heated heater element (16) and two temperature measuring elements (12, 14) arranged adjacent thereto is proposed, it being the case that depending on the direction of flow one temperature measuring element (12 or 14) is arranged upstream and the other temperature measuring element (14 or 12) downstream of the heater element (16). <IMAGE> |
