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D6113 equipment and procedures required for delivery of the reference fuel material are the responsibility of the user of this standard. No further reproductions authorized. The selector valve is positioned to deliver fuel from a specific fuel tank by rotation of the valve to the mark for that tank. Low handwheel readings correspond to high compression ratio conditions while high handwheel readings reflect low compression ratio conditions.

It conducts regular monthly exchange sample analyses to generate precision data for this engine test standard and determines the CNARV of reference materials used by all laboratories. It shall contain a detergent additive and have a kinematic viscosity of 9.

Fuel flow rate measurement can thus be performed by first filling the flow rate buret from the tank with the selector valve positioned on the tank mark and then positioning the valve between tank marks so that fuel from the buret leg alone supplies the fuel pump. D — 05 positioned over that valve tappet. NOTE 1—Experience has shown that if handwheel readings are taken when the fuel tank levels of samples and reference fuels are similar, more consistent results are obtained.

The need to use additional leverage to achieve a locked condition indicates a need for handwheel assembly maintenance. This is accomplished using the bracketing handwheel procedure which varies the compression ratio handwheel reading for the sample and each of two bracketing reference fuels to obtain a specific ignition delay permitting interpolation of cetane number in terms of handwheel reading.

The overtravel should be 0. The lift specification is the same as for the intake valve. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. The pump gallery also connects to the flow-rate buret through an air trap which is fitted with a drain valve. Record the resulting ignition delay values for each of the reference fuel blends.


A slot in the solenoid connecting linkage permits an adequate range of freedom of micrometer adjustment to provide the proper fuel flow rate for typical fuels. See Appendix X3 for handwheel assembly reworking instructions.

Handwheel Reading Standard Asfm Rebored 0. Observe the face of the injector nozzle through the pickup hole to be certain the injector assembly is tightened evenly and coolant is not leaking past the nozzle into the precombustion chamber. Reassemble the connecting rod and torque the bearing cap bolts to lbf-ft.

ASTM D613 – Cetane Number

Replace the cylinder if the bore is out of round in excess of 0. It is also important astj inspect the type of spray pattern. This setting is made at the factory and there is no provision for field adjustment.

Warning—Sharp knocking sounds may occur and blowby smoke may appear from the mechanism as the handwheel is rotated in atm counterclockwise direction which increases the handwheel reading. Some of these settings are established by component xstm, others are established at the time of engine assembly or after overhaul and still others are engine running conditions that must be observed or determined by operator adjustment, or both, during the testing process.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. If pitting or corrosion of these components is observed, the parts should be replaced.

Multigraded oils shall not be used.

It is a test that requires approximately 1 h to perform but it is useful to judge nozzle acceptance when engine instability has been experienced after cleaning and resetting. Using a feeler gage, measure the piston overtravel or separation of the flat stock above the cylinder surface.

Add sufficient engine crankcase lubricating oil through the top hole to cause the level to rise to the height of the side opening.


We are a non-profit group that run this website to share documents. This is a trial and error procedure whereby the pressure is checked by use of the injector tester after each screw adjustment accompanied by relocking of the locknut B. The readability shall be at least 0. Turn the injection timing micrometer clockwise as viewed from in front of the engine to decrease the indicated number of degrees of advance.

Valve Seat Inserts, Intake and Exhaust: Paul Avenue, Waukesha, WI Analyzed graphically, the respective sample standard deviations were plotted versus cetane number.

To adjust, loosen the locknut and change the length of the connecting screw appropriately and then relock the nut. Precision and Bias Care should be taken not to break any of the rings as they enter the chamfered bore.

ASTM D – 01 Standard Test Method for Cetane Number of Diesel Fuel Oil

Critical Equipment is specified to include the following major items: ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Parts for this crankcase are no longer manufactured. Opening the valve should drastically change the exhaust discharge configuration while the engine is operating at standard conditions to determine if there is an effect.

Your comments will receive careful consideration at a meeting of the responsible technical committee 1, which you may attend. If another keyway is used, the gear X mark is A4. For more specific warning statements, see Annex A1. Reagents and Reference Materials 8. The values given in parentheses are the historical inch-pound units for information only. The Check Fuels are the most helpful means available to permit judgement of good performance.