tieu chuan khi thai cho dc diesel

8/7/2019 Tieu Chuan Khi Thai Cho DC Diesel

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EXHAUST SMOKE FOR NON-ROAD DIESEL

ENGINE

Stage I/II Standards

Stage I and Stage II emissions shall not exceed the amount shown in Table 1. The Stage I

emissions are engine-out limits and shall be achieved before any exhaust aftertreatment

device.

Table 1

EU Stage I/II Emission Standards for Nonroad Diesel Engines

Cat.Net Power

Date*CO HC NOx PM

kW g/kWh

Stage I

A 130 P 560 1999.01 5.0 1.3 9.2 0.54

B 75 P < 130 1999.01 5.0 1.3 9.2 0.70C 37 P < 75 1999.04 6.5 1.3 9.2 0.85

Stage II

E 130 P 560 2002.01 3.5 1.0 6.0 0.2

F 75 P < 130 2003.01 5.0 1.0 6.0 0.3

G 37 P < 75 2004.01 5.0 1.3 7.0 0.4

D 18 P < 37 2001.01 5.5 1.5 8.0 0.8

* Stage II also applies to constant speed engines effective 2007.01

Emissions are measured on theISO 8178 C1 8-mode cycle and expressed in g/kWh.

Stage I/II engines are tested using fuel of 0.1-0.2% (wt.) sulfur content.

Stage III/IV Standards

Stage III standardswhich are further divided into two sub-stages: Stage III A and Stage

III Band Stage IV standards for nonroad diesel engines are listed in Table 2, Table 3,

and Table 4, respectively. These limit values apply to all nonroad diesel engines ofindicated power range for use in applications other than propulsion of locomotives,

railcars and inland waterway vessels.

Stage III B standards introduce PM limit of 0.025 g/kWh, representing about 90%

emission reduction relative to Stage II. To meet this limit value, it is anticipated thatengines will have to be equipped with particulate filters. Stage IV also introduces a very

stringent NOx limit of 0.4 g/kWh, which is expected to require NOx aftertreatment.

Table 2

Stage III A Standards for Nonroad Engines

Cat. Net Power Date CO NOx+HC PM
http://www.dieselnet.com/standards/cycles/iso8178.htmlhttp://www.dieselnet.com/standards/cycles/iso8178.htmlhttp://www.dieselnet.com/standards/cycles/iso8178.html


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kW g/kWh

H 130 P 560 2006.01 3.5 4.0 0.2

I 75 P < 130 2007.01 5.0 4.0 0.3

J 37 P < 75 2008.01 5.0 4.7 0.4

K 19 P < 37 2007.01 5.5 7.5 0.6

dates for constant speed engines are: 2011.01 for categories H, I and K; 2012.01 forcategory J.

Table 3

Stage III B Standards for Nonroad Engines

Cat.Net Power

DateCO HC NOx PM

kW g/kWh

L 130 P 560 2011.01 3.5 0.19 2.0 0.025

M 75 P < 130 2012.01 5.0 0.19 3.3 0.025

N 56 P < 75 2012.01 5.0 0.19 3.3 0.025

P 37 P < 56 2013.01 5.0 4.7 0.025

NOx+HCTable 4

Stage IV Standards for Nonroad Engines

Cat.Net Power

DateCO HC NOx PM

kW g/kWh

Q 130 P 560 2014.01 3.5 0.19 0.4 0.025

R 56 P < 130 2014.10 5.0 0.19 0.4 0.025

To represent emissions during real conditions, a new transient test procedurethe Non-Road Transient Cycle (NRTC)was developed in cooperation with the US EPA. The

NRTC is run twicewith a cold and a hot start. The final emission results are weightedaverages of 10% for the cold start and 90% for the hot start run. The new test will be used

in parallel with the prior steady-state schedule, ISO 8178 C1, referred to as the Non-RoadSteady Cycle (NRSC).

The NRTC (transient) shall be used for measurement of particulate emissions for

Stage III B and IV for all engines but constant speed engines. By the choice of themanufacturer, NRTC can be used also for Stage III A and for gaseous pollutants

in Stage III B and IV.

The NRSC (steady-state) shall be used for stages I, II and III A and for constant

speed engines, as well as for Stage III B and IV for gaseous pollutants.

Inland Water Vessels. Unlike the Stage I/II legislation, the Stage III A standards also

cover engines used in inland waterway vessels, Table 5. Engines are divided into

categories based on the displacement (swept volume) per cylinder and net power output.

The engine categories and the standards are harmonized with the US standards formarineengines. There are no Stage III B or Stage IV standards for waterway vessels.

Table 5
http://www.dieselnet.com/standards/cycles/nrtc.htmlhttp://www.dieselnet.com/standards/cycles/iso8178.htmlhttp://www.dieselnet.com/standards/us/marine.phphttp://www.dieselnet.com/standards/us/marine.phphttp://www.dieselnet.com/standards/us/marine.phphttp://www.dieselnet.com/standards/cycles/nrtc.htmlhttp://www.dieselnet.com/standards/cycles/iso8178.htmlhttp://www.dieselnet.com/standards/us/marine.phphttp://www.dieselnet.com/standards/us/marine.php


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Stage III A Standards for Inland Waterway Vessels

Cat.Displacement (D)

DateCO NOx+HC PM

dm3 per cylinder g/kWh

V1:1 D 0.9, P > 37 kW

2007.01

5.0 7.5 0.40

V1:2 0.9 < D 1.2 5.0 7.2 0.30

V1:3 1.2 < D 2.5 5.0 7.2 0.20

V1:4 2.5 < D 5

2009.01

5.0 7.2 0.20

V2:1 5 < D 15 5.0 7.8 0.27

V2:2 15 < D 20, P 3300 kW 5.0 8.7 0.50

V2:3 15 < D 20, P > 3300 kW 5.0 9.8 0.50

V2:4 20 < D 25 5.0 9.8 0.50

V2:5 25 < D 30 5.0 11.0 0.50

Rail Traction Engines. Stage III A and III B standards have been adopted for engines

above 130 kW used for the propulsion of railroad locomotives (categories R, RL, RH)

and railcars (RC), Table 6 and Table 7.

Table 6

Stage III A Standards for Rail Traction Engines

Cat.Net Power

DateCO HC HC+NOx NOx PM

kW g/kWh

RC A 130 < P 2006.01 3.5 - 4.0 - 0.2

RL A 130 P 560 2007.01 3.5 - 4.0 - 0.2

RH A P > 560 2009.01 3.5 0.5* - 6.0* 0.2

* HC = 0.4 g/kWh and NOx = 7.4 g/kWh for engines of P > 2000 kW and D > 5

liters/cylinder Table 7Stage III B Standards for Rail Traction Engines

Cat.Net Power

DateCO HC HC+NOx NOx PM

kW g/kWh

RC B 130 < P 2012.01 3.5 0.19 - 2.0 0.025

R B 130 < P 2012.01 3.5 - 4.0 - 0.025

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