Off-road Compression-Ignition (Mobile and Stationary) and Large Spark-Ignition Engine Emission Regulations — 7
Emission control system — requirements 7 (1) An emission control system that is installed on an engine to enable it to conform to the standards set out in these Regulations must not (a) in its operation, release a substance that causes air pollution and that would not have been released if the system had not been installed; or (b) in its operation or malfunction, make the engine or the machine in which the engine is installed unsafe, or endanger persons or property near the engine or machine. Defeat device (2) An engine must not be equipped with an auxiliary emission control device that reduces the effectiveness of the emission control system under conditions that may reasonably be expected to be encountered under normal operation of the engine, unless a description of the auxiliary emission control device is included in the evidence of conformity under section 40 or 41 and (a) the conditions under which the auxiliary emission control device operates are substantially included in the test procedures referred to in subsection 1 (4); (b) the auxiliary emission control device is needed to protect the engine against damage or accident; (c) the auxiliary emission control device is only used to start the engine; (d) the auxiliary emission control device is installed in a compression-ignition engine that is designed to power an emergency machine and is activated during emergency response operations to maintain speed, torque or power in either of the following circumstances: (i) the emission control system is in an abnormal state, or (ii) the device acts to maintain the emission control system in a normal state; or (e) the auxiliary emission control device is installed in a compression-ignition engine other than one referred to in paragraph (d) and the following criteria are met: (i) the auxiliary emission control device (A) is designed to prevent the operation of the emission control system only to the extent necessary to allow the engine to meet the demands of an emergency situation, (B) is accompanied by a notice in writing discouraging improper use of the auxiliary emission control device, (C) is designed so that it can only operate for a maximum of 120 hours in total before it has to be reset, (D) is designed so that it can only be reset to reestablish the time limit referred to in clause (C) by the input of a temporary code, the reconfiguration of the engine’s electronic control module or the use of another secure feature that is unique to each engine, and (E) is designed so that its operation can be manually stopped, and (ii) the engine on which the auxiliary emission control device is installed is designed to electronically record the number of times the auxiliary emission control device is used. Standards (3) Subject to subsection 11 (2), if a compression-ignition engine is equipped with an auxiliary emission control device referred to in subsection (2) that meets the requirements set out in paragraph (2)(d) or (e), the engine and the diagnostic system with which it is equipped are not required to conform to the following standards when the auxiliary emission control device is operating: (a) in the case of the engine, the standards referred to in sections 10 to 16 ; and (b) in the case of the diagnostic system, the standards referred to in section 17 .