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Apparatus for measuring velocity of flow

  • US 4,770,036 A
  • Filed: 03/03/1987
  • Issued: 09/13/1988
  • Est. Priority Date: 03/03/1986
  • Status: Expired due to Term
First Claim
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1. In an apparatus for measuring the velocity of flow of fluids, particularly intake air of internal combustion engines, the apparatus having a support, and an electrically heatable resistance layer which is applied in insulated fashion on the support, the resistance layer being in thermal contact with the flowing fluid, the improvement whereinthe support is made of silicon;

  • the apparatus further comprisingfurther layers of low thermal conductivity provided on the resistance layer and on the surface of the support facing away from the resistance layer; and

    whereinsaid further layers have a thickness which decreases in the direction of flow.

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