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Re: New (2006) TSIO550E Lean of Peak (LOP)
Operations
George is the most renowned advisor on tuned injectors and engine
management.
What I thought was a fairly tight grouping of EGT peaks with the
new TCM engine appears to be less than optimum compared to GAMI
standards.
Replotting the data with more carefully analysis at the peak
temps:
PEAK Fuel
Flow
Cylinder 1: 21.1 gph
Cylinder 2: 21.6 gph
Cylinder 3: 21.1 gph
Cylinder 4: 21.8 gph
Cylinder 5: 21.0 gph
Cylinder 6: 21.6 gph
Spread: 0.8 gallons per hour
(This stuff is fascinating)
Posted for "George Braly"
<gwbraly@gami.com>:
Jeffrey,
If that is a TCM copy of GAMI's fuel
injector set up, they you need
to ask for your money back.
That is a fairly lousy set of fuel /air
ratios.
Your #4 consistently is the leanest cylinder and
your # 1 & 5 are
consistently rather much richer ( by 1 gph or so).
This is not a trivial issue for one of the se
engines. They tend to
operate much better with the F/A ratios such that the
spread in fuel
flows is down around 0.3 gph.
Regards, George
Leaning at RPM 2500 MAP 31.5
50*LOP 19.8 GPH
100*LOP 18.8 GPH
Leaning at RPM 2500 MAP 29"
50*LOP 18.0 GPH
100*LOP 16.7 GPH
Leaning at RPM 2500 MAP 25"
50*LOP 15.8 GPH
100*LOP 14.5 GPH
Engine operated smoothly to 150*LOP and a bit beyond.
Note the EGTs peak at the same mixture and stay fairly
consistently together throughout the leaning test. These are the
TCM injectors ala GAMI (I'm told).
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