Document ID: chunk:federal_register_of_legislation:F2021C01210:reg:5:p4
Version: federal_register_of_legislation:F2021C01210
Segment Type: reg
Provision Reference: reg 5 (pt 4/5)
Character Range: 120336–124387

report shall contain the results and all the calculations required to find the net power, as listed in the appendix to this annex, together with the characteristics of the engine listed in annex 1 to this Regulation

  8.  MODIFICATION OF ENGINE TYPE
        Any modification of the engine with regard to the characteristics listed in annex 1 to this Regulation must be reported to the competent administration. That administration may then either:
        8.1  Consider that the modifications made are not liable to have any substantial effect on the power of the engine, or
        8.2.  Request a further determination of the engine power through the carrying-out of such tests as are deemed necessary.

  9.  TOLERANCES FOR MEASURING THE NET POWER
        9.1.  The net power of the engine measured by the technical service may differ by   + 2 per cent from the net power specified by the manufacturer, with a tolerance of 1.5 per cent for the engine speed.
        9.2.  The net power of an engine at a production conformity test may differ by 5 per cent from the net power at a type approval test.
 Annex 10 - Appendix

STATEMENT OF THE RESULTS OF TESTS FOR MEASURING NET ENGINE POWER

This information is to be supplied by the manufacturer simultaneously with the identification sheet constituting annex 1 to the Regulation. If the test
under this Regulation is a bench test of the engine, this form shall be
completed by the laboratory performing the test.

1. Test conditions
1.1 Pressures measured at maximum power
1.1.1 Total barometric pressure ....................Pa
        1.1.2 Water vapour pressure ......................Pa
        1.1.3 Exhaust pressure ..........................Pa
        1.2 Temperatures measured at maximum power
        1.2.1 of the intake air ...........................K
        1.2.2 at the outlet of the engine intercooler ................................K
        1.2.3 of the cooling fluid:
        1.2.3.1 at the engine cooling fluid outlet ...................................K l/
        1.2.3.2 at the reference point in the case of air cooling ..........................K l/
        1.2.4 of the lubricating oil ..K (indicate point of measurement)
        1.2.5 of the fuel:
1.2.5.1 at the fuel pump inlet......................... ..................K
        1.2.5.2 in the fuel-consumption measuring device .............................K
        1.3 Characteristics of the dynamometer:
        1.3.1 Make:..............................Model:...................
        1.3.2 Type:...................................

------------
l/    Strike out what does not apply

Fuel
        2.1 For positive-ignition engines operating on liquid fuel
        2.1.1 Make:...................................
        2.1.2 Specification: ..............................
        2.1.3 Anti-knock additive (lead, etc.).....................................
        2.1.3.1 Type:......................................................
        2.1.3.2 Contents ..............................mg/1
        2.1.4 Octane number RON: ..............................(ASTM D 26 99-70)
        2.1.4.1 Specific density: ............................................g/cm 3 at 288 K
        2.1.4.2 Lower calorific value: .....................kJ/kg

        2.2 For positive-ignition engines operating on gaseous fuel
        2.2.1 Make: .....................................................
        2.2.2 Specification:................................................
        2.2.3 Storage pressure:............................................bar
        2.2.4 Utilization pressure:..........................................bar
        2.2.5 Lower calorific value: ........................kJ/kg

        2.3 For compression-ignition engines operating on gaseous fuels
        2.3.1 Feed system:   gas.............................................
        2.3.2 Specification of gas used:........................................
        2.3.3 Fuel oil/gas proportion:..........................................
        2.3.4 Lower