
194 LIGHT AND HEAVY VEHICLE TECHNOLOGY
adoption in America, where manufacturers are respon-
sible for the durability of emission controls up to 83 000
km (50000 miles).
Ready incorporation in engine management systems
An important modern advantage of the electronic ig-
nition system is that it can be integrated with electronic
microcomputer control systems, which provide overall
management of air-fuel ratio, spark timing and other
engine functions to reduce harmful exhaust emissions
and improve fuel economy.
Basic operation of a typical system
A typical modern electronic ignition system comprises
a breakerless distributor, an amplifier modul