Document ID: chunk:federal_register_of_legislation:F2011C00805:reg:120:p21
Version: federal_register_of_legislation:F2011C00805
Segment Type: reg
Provision Reference: reg 120 (pt 21/23)
Character Range: 291737–294913

=    0.714    in the case of NG

   MHC  =  89.371    .    51.961    .    0.619    .    10-6    .  1
   d

   MHC  =  2.88     g/km
   d

 CO, mass emissions (see formula (1))

   MCO  =  CCO    .    Vmix    .    QCO    .  1
   d

 QCO    =    1.25

   MCO  =  470    .    51.961    .    1.25    .    10-6    .  1
   d

   MCO  =  30.5     g/km
   d

 NOx mass emissions (see formula (1))

   MNOx  =  CNOx    .    Vmix    .    QNOx    .    kH    .  1
   d

 QNOx    =   2.05

   MNOx  =  70    .    51.961    .    2.05    .    0.9934    .    10-6    .  1
   d

   MNOx  =  7.41     g/km
   d

         2. SPECIAL PROVISIONS FOR VEHICLES EQUIPPED WITH COMPRESSION-IGNITION ENGINES

         2.1. Determination of HC for compression-ignition engines

         To calculate HC-mass emission for compression-ignition engines, the average HC concentration is calculated as follows:

          (7)

         where:

                           = integral of the recording of the heated FID over the test (t2-t1)

                         Ce   = concentration of HC measured in the diluted exhaust in ppm of Ci is substituted for CHC in all relevant equations.

         2.2.  Determination of particulates

         Particulate emission Mp (g/km) is calculated by means of the following equation:

         where exhaust gases are vented outside tunnel;

         where exhaust gases are returned to the tunnel.

         where:

               Vmix = Volume of diluted exhaust gases (see para. 1.1.), under standard conditions,

               Vep = Volume of exhaust gas flowing through particulate filter under standard conditions,

               Pe = Particulate mass collected by filters,

               d = Distance corresponding to the operating cycle in km,

               Mp = Particulate emission in g/km.

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Annex 5

TYPE II TEST
(Carbon monoxide emission test at idling speed)

         1. INTRODUCTION

         This Annex describes the procedure for the Type II test defined in paragraph 5.3.2. of this Regulation.

         2.  CONDITIONS OF MEASUREMENT

         2.1. The fuel shall be the reference fuel, specifications for which are given in Annexes 10 and 10a to this Regulation.

         2.2.  During the test, the environmental temperature shall be between 293 and 303 K (20 and 30 C). The engine shall be warmed up until all temperatures of cooling and lubrication means and the pressure of lubrication means have reached equilibrium.

         2.2.1. Vehicles that are fuelled either with petrol or with LPG or NG shall be tested with the reference fuel(s) used for the Type I test.

         2.3. In the case of vehicles with manually-operated or semi-automatic-shift gearboxes, the test shall be carried out with the gear lever in the "neutral" position and with the clutch engaged.

         2.4. In the case of vehicles with automatic-shift gearboxes, the test shall be carried out with the gear selector in either the "neutral" or the "parking" position.

         2.5.  Components for adjusting the idling speed

         2.5.1. Definition

         For the purposes of this Regulation, "components for adjusting the idling