×

Arrangement for the liquid cooling of an electric motor generator unit

  • US 10,069,380 B2
  • Filed: 03/01/2016
  • Issued: 09/04/2018
  • Est. Priority Date: 03/05/2015
  • Status: Active Grant
First Claim
Patent Images

1. A liquid cooling system, comprising:

  • an electric motor generator unit including a stator and a rotor;

    an air gap for cooling the electric motor generator unit, the air gap defined between the stator and the rotor, where the air gap is configured to receive a cooling liquid supplied from a source located outside of the electric motor generator unit;

    a temperature sensor for detecting an operating temperature variable; and

    a control device operably controlling a pressure or flow of the supplied cooling liquid from the source as a function of a determined actual value of the operating temperature variable of the electric motor generator unit;

    wherein the control device operably limits the flow of the supplied cooling liquid based on at least one of a lower and an upper limiting flow value, the at least one of the lower and the upper limiting flow value being based on the actual value of the operating temperature variable; and

    wherein the control device operably determines, based on the actual value of the operating temperature variable, that the viscosity of the cooling liquid has changed, and the control device, in response, operably adjusts the at least one of the lower and the upper limiting flow value.

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