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Emission Standards » Chile

Heavy-Duty Engines

Engine Emission Standards

Emission standards for heavy-duty truck and bus engines [2951] are listed in Table 1 and Table 2. These apply to motor vehicles with a gross vehicle weight greater than or equal to 3,860 kg and that are designed to transport people or cargo on streets and roads. Early standards applied to vehicles operating in the Santiago Metropolitan Region (RM) and Region IV to X. Nationwide standards took effect in 2006.

In cases where dual standards exist, engines must meet either the EU-based or the US-based compliance option. Engines are tested on the respective EU (ESC+ETC) or US (FTP) engine dynamometer test cycles, as indicated.

Starting with heavy-duty vehicles first registered January 2012 and later and operating in the Metropolitan Region, PM emissions were limited to Euro IV/US 2007 levels while NOx limits for these vehicles remained at Euro III/US 1998 levels. In addition to OEM vehicles produced to meet the 2012 PM requirements, the limit could also be met by engines originally certified to PM emissions higher than the levels shown if they have been fitted with a diesel particulate filter carrying an approval by the Swiss Federal Office for the Environment (FOEN) or California ARB Level 3 verification and if the engine’s certification PM emissions multiplied by (1 - filter efficiency/100) does not exceed the limits shown. It should be reinforced that this is not a retrofit requirement for vehicles first registered prior to 2012 but a compliance option for those first registered after January 2012.

Emission standards for urban buses operating in certain parts of the Santiago Metropolitan Region (Santiago Province and the municipalities of San Bernardo and Puente Alto) were more stringent than those listed in Table 1 prior to the adoption of US 2004/Euro V limits. These standards are listed in Table 2 [2950]. Urban buses first registered in September 2012 or later for use in this region must be equipped with a factory installed OEM diesel particulate filter to ensure emissions do not exceed the limits equivalent to Euro IV or US 2004 NMHC+NOx/US 2007 PM [2949].

Table 1
Emission Standards for Heavy-Duty Engines, GVW ≥ 3860 kg
Date & RegionCOHCNOxPMUnitTestReference
Diesel
1994.09: RM & IV-X4.51.18.00.36ag/kWhECE R-49Euro I
15.51.36.00.35g/bhp-hrUS FTPUS 1991
1998.09: RM & IV-X
2006.05: National
4.01.17.00.15g/kWhECE R-49Euro II
15.51.35.00.10g/bhp-hrUS FTPUS 1994
2006.10: RM & IV-X† 2.10.665.00.10 (0.13*)g/kWhESCEuro III
5.450.785.00.16 (0.21*)ETC
15.51.34.00.10g/bhp-hrUS FTPUS 1998
2012.01: RM 2.10.665.00.02g/kWhESCEuro III/Euro IV PM
5.450.785.00.03ETC
15.51.34.00.01g/bhp-hrUS FTPUS 1998/US 2007 PM
RM, II-X & XIV
2012.06
2013.09: Urban buses outside of RM
1.50.463.50.02g/kWhESCEuro IV
4.00.55f3.50.03ETC
15.52.4d0.01eg/bhp-hrUS FTPUS 2004/US 2007 PM
RM, II-X & XIV
2014.10: New models except urban buses
2015.09: Urban buses outside of RM
2015.10: All models
1.50.462.00.02g/kWhESCEuro V
4.00.55f2.00.03ETC
15.52.4d0.01g/bhp-hrUS FTPUS 2004/US 2007 PM
Gasoline
1994.0937.11.95.0-g/bhp-hrUS FTP 
Gaseous Fuels
2004.01: RM5.450.78b5.0g/kWhETC
15.51.3c4.00.10g/bhp-hrUS FTP
* for engines of less than 0.75 dm3 swept volume per cylinder and a rated power speed of more than 3000 min-1
† ETC testing and emission limits apply only to diesel engines with advanced aftertreatment, e.g., with particulate filters and/or NOx catalysts
a - 0.612 g/kWh for engines < 85 kW
b - NMHC for natural gas engines; natural gas engines must also meet a CH4 limit of 1.6 g/kWh
c - 1.2 g/bhp-hr NMHC for natural gas engines
d - NMHC+NOx. An limit of 2.5 g/bhp-hr applies if NMHC do not exceed 0.5 g/bhp-hr
e - PM limit depends on application: 0.01 g/bhp-hr applies to all vehicles with 3860 kg ≤ GVW < 15000 kg; 0.05 g/bhp-hr for urban buses with a GVW ≥ 15000 kg; and 0.10 g/bhp-hr for other vehicles with a GVW ≥ 15000 kg
f - NMHC
Table 2
Emission Standards for Urban Buses in Metropolitan Region
DateCOHCNOxPMUnitTestReference
Diesel
1993.09 4.51.18.00.36ag/kWhECE R-49Euro I
15.51.36.00.25g/bhp-hrUS FTPUS 1991
1996.09 4.01.17.00.15g/kWhECE R-49Euro II
15.51.35.00.10g/bhp-hrUS FTPUS 1994
2002.09† 2.10.665.00.10 (0.13*)g/kWhESCEuro III
5.450.785.00.16 (0.21*)ETC
15.51.34.00.05g/bhp-hrUS FTPUS 1998
2012.09 1.500.463.50.02g/kWhESCEuro IV
4.00.553.50.03ETC
15.52.4d0.01g/bhp-hrUS FTPUS 2004/US 2007 PM
Gasoline
1993.0937.11.95.0-g/bhp-hrUS FTP 
Gaseous Fuels
2002.09 5.450.78b5.0-g/kWhETCEuro III
15.51.3c4.00.05g/bhp-hrUS FTPUS 1998
* for engines of less than 0.75 dm3 swept volume per cylinder and a rated power speed of more than 3000 min-1
† for Euro III diesel vehicles whose first application for registration is made before 2006.03, ETC testing and emission limits apply only to diesel engines with advanced aftertreatment, e.g., with particulate filters and/or NOx catalysts. ESC and ETC testing applies to all diesel vehicles whose first application for registration is made 2006.03 or later.
a - 0.612 g/kWh for engines < 85 kW
b - NMHC for natural gas engines; natural gas engines must also meet a CH4 limit of 1.6 g/kWh
c - 1.2 g/bhp-hr NMHC for natural gas engines
d - NMHC+NOx. An limit of 2.5 g/bhp-hr applies if NMHC do not exceed 0.5 g/bhp-hr

Gasoline and gas fueled trucks and buses have also an evaporative emission limit of 4 g per test.

Chassis Compliance Option

Changes to D.S. N° 55/1994 published in 2012 allowed diesel vehicles with 3860 ≤ GVW ≤ 6350 kg to alternatively certify complete vehicles according to the limits in Table 3 [2951]. (This option is equivalent to the US EPA provision that allowed an engine manufacturer to use pick-up trucks to count toward the US EPA 2007-2009 heavy-duty engine phase-in requirements.)

Table 3
Emission Standards for Chassis Certified Heavy-Duty Diesel Vehicles, g/km
GVWNMHCCONOxPMHCHO
3860 - 4536 kg0.1214.50.10.010.02
4537 - 6350 kg0.1435.00.20.010.02