ISO 4010 pdf download

ISO 4010 pdf download.Diesel engines — Calibrating nozzle, delay pintle type 1 Scope This International Standard specifies a nozzle intended for the testing and setting of injection pumps on injection pump test benches. It specifies the dimensions and test methods for determining the clearance at the “pintle” of the needle (method 1 ) and the clearance at the needle guide (method 2). The exact limit of the application of the calibrating nozzle depends upon the test values specified for the injection pump. The applicability is to be verified in each case by the pump manufacturer and stated on the pump test specification for each pump type. The typical range is up to 1 50 mm 3 /stroke. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 2697:— 1 ) , Road vehicles — Fuel nozzles — Size “S”. 3 Designation and marking The nozzle designation shall be marked on that part of the shank which protrudes beyond its cap nut. This designation is the number of this International Standard; i.e. ISO 401 0. 4 Dimensions and tolerances Dimensions and tolerances are given in figure 1 . All other dimensions of the nozzle, except the clearance at the needle guide, shall be as specified in ISO 2697 for type B. However, the two dowel holes are dropped. The clearance of the needle in its guide shall be determined by the method given in 5.3. 5 Test methods 5.1 General All measurements of the following two test methods shall be performed on clean, dry nozzles. For the flow measurements, calibrated measuring devices with a measuring precision of ± 0,5 % of the value indicated shall be used. 5.2 Test method 1: Clearance at the “pintle” Method 1 measures the clearance between the needle protrusion (pintle) and the nozzle hole in the nozzle body by air flow. 5.2.1 Flow characteristics for air When measuring with the measuring installation given in figure 3, the calibrating nozzle shall achieve the control values given in table 1 . 5.2.2 Measuring...