Ill. Admin. Code tit. 35 § 211.5640
Current through Register Vol. 48, No. 49, December 6, 2024
"Rich-burn engine" means a spark-ignited engine where the oxygen content in the exhaust stream of the engine before any dilutions is 1 percent or less by volume measured on a dry basis.
Ill. Admin. Code tit. 35, § 211.5640
Added at 31 Ill. Reg. 14254, effective September 25, 2007