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油泵油嘴
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空氣流量計的作用

2019-09-06

空氣流量計的主要作用是檢測發動機的進氣量或進氣溫度,有一些還有檢測大氣壓力。根據進氣量的大小,轉換成電信號,到ECU里面運算,跟節氣門位置傳感器一同控制發動機的轉速(噴油時間和點火時間控制)??諝饬髁坑?/span>

空氣流量計有多種形式:閥門式(根據進氣時推動閥門的開度來檢測流量)、卡門漩渦式(根據進氣時擾動的氣流強度來判斷進氣量)、熱線式(根據進氣的空氣流過熱敏電阻散熱來檢測流量)、熱膜式(根據空氣吹過熱膜散熱而檢測進氣的流量)、超聲波式(根據進氣大小干擾超聲波來檢測進氣流量)、真空壓力式(根據膜片的移動來檢測進氣壓力)等。噴油嘴

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