×

Set-up for measuring a rotational speed, in particular, of a turbocharger of a motor vehicle

  • US 10,459,077 B2
  • Filed: 07/29/2016
  • Issued: 10/29/2019
  • Est. Priority Date: 07/31/2015
  • Status: Active Grant
First Claim
Patent Images

1. A set-up for measuring a rotational speed of a turbocharger of a motor vehicle, comprising:

  • at least one antenna for at least one of generating and receiving electromagnetic radiation;

    an electronic module that includes at least one of an electric and electronic component, the electronic module being electrically connected to the antenna;

    a housing shell that is made at least partially of laser-absorbing material and that includes an inner chamber in which the at least one antenna and the electronic module are situated; and

    a housing cover having a first side that;

    at least partially covers the inner chamber of the housing shell; and

    abuts against a laser-absorbing contact surface of the housing shell at a location at which the housing cover is made of material that is transparent to laser radiation and at which the housing cover is welded to the laser-absorbing contact surface with a laser-welded seam;

    wherein at least one of the following;

    at least a portion of the housing cover has a first thickness that is one quarter of a wavelength of an electromagnetic wave at least one of (a) that the antenna is configured to at least one of transmit and receive through the housing cover, (b) to which the at least the portion of the housing cover is transparent, and (c) that is between twenty-one gigahertz and twenty-seven gigahertz; and

    the housing cover includes a plate with at least one window-like depression at which the plate is reduced in thickness, and the window-like depression and the antenna are positioned relative to each other such that at least one of (a) at least a portion of a transmitting or receiving surface of the antenna faces the depression and (b) a projection of the antenna, in a direction that is perpendicular to a transmitting or receiving surface of the antenna, onto the first side of the housing cover lies at least partially in the depression.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×