Method and diagnostic tester for detecting a fault in a cooling circuit of a motor vehicle

Method and diagnostic tester for detecting a fault in a cooling circuit of a motor vehicle

  • CN 103,429,445 A
  • Filed: 02/15/2012
  • Published: 12/04/2013
  • Est. Priority Date: 03/23/2011
  • Status: Active Application
First Claim
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1. for the method for the fault of the cooling circuit (2) of cognitron motor-car, described cooling circuit comprises compressor (6), condenser (8), expansion gear (18) and evaporator (4) along the flow direction of cooling media (12), and wherein said method comprises the steps:

  • (a) measure the first pressure cooling medium when disconnecting described compressor (6);

    (b) connect described compressor (6);

    It is characterized in that,(c) measure the second pressure cooling medium after certain time interval;

    (d) by the second pressure cooling medium measured in step (c) and in step (a) the first measured pressure cooling medium form difference;

    And(e) described difference and at least one reference value are compared, to identify the fault in described cooling circuit (2).

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