Appendix A to Subpart D of Part 89 - Tables

Appendix A to Subpart D of Part 89 - Tables

Table 1 - Abbreviations Used in Subpart D

CLD	Chemiluminescent detector.
CO	Carbon monoxide.
CO2	Carbon dioxide.
HC	Hydrocarbons.
HCLD	Heated chemiluminescent detector.
HFID	Heated flame ionization detector.
GC	Gas chromatograph.
NDIR	Non-dispersive infra-red analyzer.
NIST	National Institute for Standards and Testing.
NO	Nitric Oxide.
NO2	Nitrogen Dioxide.
NOX	Oxides of nitrogen.
O2	Oxygen.

Table 2 - Symbols Used in Subparts D and E

Symbol	Term	Unit
conc	Concentration (ppm by volume)	ppm
f	Engine specific parameter considering atmospheric conditions
FFCB	Fuel specific factor for the carbon balance calculation
FFD	Fuel specific factor for exhaust flow calculation on dry basis
FFH	Fuel specific factor representing the hydrogen to carbon ratio
FFW	Fuel specific factor for exhaust flow calculation on wet basis
FR	Rate of fuel consumed	g/h
GAIRW	Intake air mass flow rate on wet basis	kg/h
GAIRD	Intake air mass flow rate on dry basis	kg/h
GEXHW	Exhaust gas mass flow rate on wet basis	kg/h
GFuel	Fuel mass flow rate	kg/h
H	Absolute humidity (water content related to dry air)	g/kg
i	Subscript denoting an individual mode
KH	Humidity correction factor
L	Percent torque related to maximum torque for the test mode	%
mass	Pollutant mass flow	g/h
nd, i	Engine speed (average at the i'th mode during the cycle)	1/min
Ps	Dry atmospheric pressure	kPa
Pd	Test ambient saturation vapor pressure at ambient temperature	kPa
P	Observed brake power output uncorrected	kW
PAUX	Declared total power absorbed by auxiliaries fitted for the test	kW
PM	Maximum power measured at the test speed under test conditions	kW
Pi	Pi = PM, i + PAUX, i
PB	Total barometric pressure (average of the pre-test and post-test values)	kPa
Pv	Saturation pressure at dew point temperature	kPa
Ra	Relative humidity of the ambient air	%
S	Dynamometer setting	kW
T	Absolute temperature at air inlet	K
Tbe	Air temperature after the charge air cooler (if applicable) (average)	K
Tclout	Coolant temperature outlet (average)	K
TDd	Absolute dewpoint temperature	K
Td, i	Torque (average at the i'th mode during the cycle)	N-m
TSC	Temperature of the intercooled air	K
Tref	Reference temperature	K
VEXHD	Exhaust gas volume flow rate on dry basis	m3/h
VAIRW	Intake air volume flow rate on wet basis	m3/h
PB	Total barometric pressure	kPa
VEXHW	Exhaust gas volume flow rate on wet basis	m3/h
WF	Weighing factor
WFE	Effective weighing factor

Table 3 - Measurement Accuracy and Calibration Frequency

No.	Item	Calibration accuracy1	Calibration frequency
1	Engine speed	±2%	30 days.
2	Torque	Larger of ±2% of point or ±1% of engine maximum	30 days.
3	Fuel consumption (raw measurement)	±2% of engine maximum	30 days.
4	Air consumption (raw measurement)	±2% of engine maximum	As required.
5	Coolant temperature	±2 °K	As required.
6	Lubricant temperature	±2 °K	As required.
7	Exhaust backpressure	±1.0% of engine maximum	As required.
8	Inlet depression	1.0% of engine maximum	As required.
9	Exhaust gas temperature	±15 °K	As required.
10	Air inlet temperature (combustion air)	±2 °K	As required.
11	Atmospheric pressure	±0.5%	As required.
12	Humidity (combustion air) (g of H2O/Kg of dry air)	±0.5	As required.
13	Fuel temperature	±2 °K	As required.
14	Temperature with regard to dilution tunnel	±2 °K	As required.
15	Dilution air humidity (g of H2O/Kg of dry air)	±0.5	As required.
16	HC analyzer	±2%	Monthly or as required.
17	CO analyzer	±2%	Once per 60 days or as required.
18	NOX analyzer	±2%	Monthly or as required.
19	Methane analyzer	±2%	Monthly or as required.
20	NOX converter efficiency check	90%	Monthly.
21	CO2 analyzer	±2%	Once per 60 days or as required.

¹ All accuracy requirements pertain to the final recorded value which is inclusive of the data acquisition system.

Table 4 - Federal Test Fuel Specifications

Item	Procedure (ASTM)1	Value (type 2-D)
Cetane	D613-95	40-48
Distillation Range:
IBP, °C	D86-97	171-204
10% point, °C	86-97	204-238
50% point, °C	86-97	243-282
90% point, °C	86-97	293-332
EP, °C	86-97	321-366
Gravity, API	D287-92	32-37
Total Sulfur, %mass	D129-95 or D2622-98	0.03-0.40
Hydrocarbon composition:
Aromatics, %vol	D1319-98 or D5186-96	2 10
Paraffins, Naphthenes, Olefins	D1319-98	(3)
Flash Point, °C (minimum)	D93-09	54
Viscosity @ 38 °C, centistokes	D445-09	2.0-3.2

¹ All ASTM procedures in this table have been incorporated by reference. See § 89.6.

² Minimum.

³ Remainder.

[63 FR 57013, Oct. 23, 1998, as amended at 77 FR 2461, Jan. 18, 2012]