Yamaha FJR1300, Service Manual

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GEN
INFO
FEATURES
Large amounts of both CO and HC are generated when the mixture is rich (as indicated by insuffi-
cient O
2
region
A
). Conversely, large amounts of NOx are generated when the mixture is lean (as
indicated by excessive O
2
region
B
). Under these conflicting characteristics, the system maintains
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.
0 13
13.5 14 14.5 15 15.5 16
20
40
60
80
100
HC
NOx
CO
14.7
Con
v.
(%)