Exhaust Gas RECIRCULATION: Description
The exhaust gas recirculation system is designed to control formation of NOx emissions. This is done by reintroducing some exhaust gas back into the combustion chamber. The exhaust gases are lower in temperature than the combustion flame. By reducing combustion chamber temperatures, NOx formation is reduced.
California Le Car vehicles use an EGR valve and thermal vacuum valve. See Fig 1. The system on Le Car Federal vehicles includes an EGR valve, coolant switch, choke switch, gearbox switch, and an EGR vacuum solenoid. See Figure.
The Fuego Turbo system includes an EGR valve, solenoid valve, 5th gear transmission switch, coolant temperature switch, pressure surge valve and vacuum reservoir. See Figure.