E
G
T
°
F
b
e
lo
w
p
e
a
k
P
e
rc
e
n
t
o
f
b
e
st
p
o
w
e
r
C
H
T
°
F
c
h
a
n
g
e
f
ro
m
b
e
st
p
o
w
e
r
Best
economy
range
Best
power
range
0
-200
-100
-300
-20
20
-60
-40
0
-80
100
85
90
95
80
EG
T
CHT
Percent power
Spe
cific
fue
l co
nsu
mp
tion
Too
lean
Lean
Rich
Full Rich
(Take-off)
Peak EGT
Leaner Mixture
Peak
Power
As the mixture is leaned,
EGT
rises to a peak temperature, and then drops
as the mixture is further leaned. Peak
power
occurs at a mixture using
more fuel than at peak EGT. Best
economy
occurs at peak EGT. Accurate
leaning yields optimal engine temperatures. By being able to precisely
adjust the mixture, your engines can produce either the highest fuel
economy or maximum power, whichever you choose.
A single EGT gauge merely gives you an average of each cylinder’s
temperature: some cylinders can be too rich, while others too lean.
Variations produced by differences in fuel distribution, ignition, and
compression will cause each cylinder to follow its own mixture and
For Your Safe Flight
Page 5
Summary of Contents for EDM-760 TWIN
Page 69: ...For Your Safe Flight Page 63 ...
