Document ID: chunk:federal_register_of_legislation:F2008C00030:body:0:p6
Version: federal_register_of_legislation:F2008C00030
Segment Type: other
Provision Reference: 
Character Range: 13392–16448

20/12/07

Table of Amendments
Clause affected  How affected  Amending instrument
2.2.2            am            Vehicle Standard (Australian Design Rule 80/02 - Emission Control for Heavy Vehicles) 2006 Amendment 1

am = amended
ad = added or inserted
VEHICLE STANDARD (AUSTRALIAN DESIGN RULE 80/02
 — EMISSION CONTROL FOR HEAVY VEHICLES) 2006

APPENDIX D

Japanese Ministry of Land, Infrastructure and Transport
Technical Guideline for Urea Selective Catalytic Reduction System
No. 105 of 14 September 2004

(Edited translation for the purposes of this vehicle standard)

1 Scope

       This technical guideline applies to diesel vehicles with gross vehicle weight of 3.5 tonnes or more equipped with urea selective catalyst reduction system (hereinafter called SCR).

2 Urea Solution Standard

       Urea solution used for the SCR system on the vehicle should conform to DIN V70070 Dieselmotoren–NOx–Reduktionsmittel AUS32–Anforderungen und Pruefverfahren.

3 Construction Requirements

      3.1                     The SCR system on the vehicle shall be designed to:

      3.1.1 keep the temperature of the urea solution liquid at low atmospheric temperature in order to prevent phase separation;

      3.1.2 prevent urea from staying at the injection nozzle when the engine stops in order to prevent phase separation;

      3.1.3 prevent high urea solution temperatures by adopting shields or other measures in order to maintain the quality of the urea solution in the tank;

      3.1.4 provide a pressure regulator in urea solution tank in order to prevent excessively high pressures in the tank;

      3.1.5 prevent urea solution from freezing while the engine is running in order to secure proper injection rates for the urea solution; and

      3.1.6 use parts which are durable and resist corrosion by the urea solution and other material.

      3.2 In order to keep the emission of ammonia as low as possible, a vehicle equipped with an SCR system shall:

      3.2.1 be fitted with oxidation catalyst downstream of the SCR system, which has enough oxidation capability to keep emissions of ammonia as low as possible; and

      3.2.2 utilise a pressure regulator in the urea tank which incorporates a mechanism to keep emissions of ammonia as low as possible.

      3.3 A vehicle equipped with an SCR system should be provided with a meter, which indicates the balance of urea solution in the tank so that the driver is able to refill properly.

      3.4 Any catalyst used as part of, or in conjunction with, an SCR system must not emit any of the following metals into the atmosphere:
          * Vanadium
          * Chromium
          * Manganese
          * Cobalt
          * Nickel
          * Copper

4 Cautions and Warnings

      4.1 Cautions

       A vehicle equipped with an SCR system should be provided with caution lamps, which shall engage and inform the driver to take corrective measures when the following conditions are detected:

4.1.1 the urea solution injection rate is incorrect;

      4.1.2