11. The 2003 model "'LN2 "'is equipped with secondary air injection . 12. Emissions controls are a catalyzed muffler, AIR Injection system, and an evaporative fuel canister. 13. Waterflooding was begun in 1953, and air injection in 1971. 14. A new air injection system was introduced to improve catalytic converter function at idle. 15. Exhaust emission controls included secondary air injection , the PGM-FI system and two catalytic converters. 16. In 2001, a compressed air injection system was introduced. 17. In the US, a " PAIR " air injection system reduces CO and HC emissions. 18. From 2001 to 2008, various combinations of pumping and air injection were used to control groundwater. 19. Doctors often use air injections to fight TB strains that resist the most commonly used drugs. 20. After combustion zone reached to the bottom of retort, air injection was stopped to stop combustion.
