Yamaha FJR1300R Service Manual page 46

Large amounts of both CO and HC are generated when the mixture is rich (as indicated by insuffi-
region A). Conversely, large amounts of NOx are generated when the mixture is lean (as
cient O
2
indicated by excessive O
the mixture within an extremely narrow range C of stoichiometric ratio (14.7:1). As a result, the
function of the catalyst is maximized, making it possible to clean the exhaust gases at a high degree
of efficiency.
region B). Under these conflicting characteristics, the system maintains
2
100
NOx
80
60
40
HC
20
CO
0 13
13.5 14
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FEATURES
14.7
14.5 15 15.5 16
GEN
INFO