Excluded means relating to engines that are not subject to some or all of the requirements of this part as follows:
(1) An engine that has been determined not to be a heavy-duty engine is excluded from this part.
(2) Certain heavy-duty engines are excluded from the requirements of this part under § 1036.5.
(3) Specific regulatory provisions of this part may exclude a heavy-duty engine generally subject to this part from one or more specific standards or requirements of this part.
40 CFR § 1036.801
The following definitions apply to this part. The definitions apply to all subparts unless we note otherwise. All undefined terms have the meaning the Act gives to them. The definitions follow: