now there’s a better choice - gas/electric · pdf file2 waukesha product portfolio...
TRANSCRIPT
275GLTM Series
Now There’s a Better Choice
February 9-10, 2011
Model HPNOx
(g/bhp-hr)12V275GL 3375 0.75
12V275GL+ 3625 0.5016V275GL 4500 0.75
16V275GL+ 4835 0.50
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Waukesha Product Portfolio
Dresser Waukesha’s comprehensive product portfolio offers multiple configurations available in both lean-burn and rich-burn combustion systems to meet specific application requirements.
1000BHP
2000BHP
3000BHP
4000BHP
5000BHP
ATGL® *
APG™ *
366 – 1980 bhp (315 - 1400 kWe)
VHP®
160 – 1175 bhp (230 - 830 kWe)
VGF®
2820 – 4500 bhp (2000 – 3250 kWe)
2530 – 4835 bhp (2330 – 3480 kWe)
1390 – 4425 bhp (1000-3200 kWe)
275GL™
0BHP
* For Power Generation applications only
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275GL Series Performance Comparison
12V275GL 12V275GL+ 16V275GL 16V275GL+
Power (bhp) 3375 3625 4500 4835
BSFC (BTU/bhp-hr; +5% LHV)
6702 6475 6750 6466
Altitude w/o Derate (ft) @ 100°F
3000 4000 6000 3000
Fuel Derate Begins at:
70 WKI ≈1125 Btu
70 WKI ≈ 1125 Btu
70 WKI ≈1125 Btu
70 WKI ≈1125 Btu
NOx (g/bhp-hr) 0.75 0.5 0.75 0.5
CO (g/bhp-hr) 2.0 1.8 2.5 1.8
NMHC (g/bhp-hr) 0.8 0.7 .55 0.7
275GL data shown at Low NOx setting; 275GL+ has only one setting
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275GL+ Technology Improvements
Improved Turbocharger Match• Allows for leaner air/fuel ratio (approx. 2.1 lambda), which provides lower fuel
consumption and emission levels with increased power
NOx Sensor • Directly reads NOx emissions from exhaust stream; no calculations required
NOx Control Module (NCM)• Adjusts air/fuel ratio based on output from NOx sensor to maintain 0.5 g/bhp-
hr NOx
Updated HMI Panel• Provides easy-to-read engine operating parameters, including direct readout
of NOx value
Lower Prechamber Volume (2%1%)• Provides stable operation at 0.5 g/bhp-hr NOx
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Prechamber Combustion Development
Ideal combustion conditions occur with 1.0% prechamber and 18° BTDC
•Majority of NOx formation occurs in prechamber
•Lower % = Less NOx produced
Preferred Solution
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Prechamber Combustion Development
Combustion rate with various 1% prechamber configurations as fast or faster than standard 2% prechamber
1% Prechamber Burn Rates vs Crank Angle
0%
20%
40%
60%
80%
100%
Crank Angle
Burn
%
Avg Std PC
BTDC 0 ATDC
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Prechamber Combustion Development
0.5% Prechamber Burn Rates vs Crank Angle
0%
20%
40%
60%
80%
100%
Crank Angle
Bur
n %
Avg Std PC
BTDC 0 ATDC
Combustion with 0.5% prechamber not suitable due to slow burn speeds
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Prechamber Combustion Development
With 2% prechambers, must run at lean limit to get 0.5 g NOx;
combustion unstable
2% Prechambers
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8
10
12
14
16
18
20
22
24
30 31 32 33 34 35 36
Igni
tion
Tim
ing
PFP Timing
0.62 NOxTiming
0.4 NOxTiming
LL Timing
Increasing Air/Fuel Ratio
Incr
easi
ng A
dvan
ce
0.75
0.5
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Prechamber Combustion Development
1% prechambers provide sufficient operating margin from the lean limit
for stable combustion
16V275GL+ 1% Prechambers
810121416182022242628
30 31 32 33 34 35 36
Igni
tion
Tim
ing
PFP Timing
0.62 NOxTiming
0.4 NOx Timing
LL Timing
Incr
easi
ng A
dvan
ce
Increasing Air/Fuel RatioMargin between operating range and lean limit
0.75
0.5
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275GL+ Lower Peak Firing Pressure
275GL+ operates at higher BMEP than 275GL but with lower stress levels on
engine
16V275GL+ Set Up for 0.5 NOx Operation
0
200
400
600
800
1000
1200
1400
1600
1800
2000
80 100 120 140 160 180 200 220 240
BMEP
Peak
Firi
ng P
ress
ure
275GL+275GL
16V275GL PFP Limit
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275GL Series Summary
• 275GL is Waukesha’s new high-horsepower engine family• 12 & 16-cylinder variations—up to 3625 & 4835 bhp @
1000 rpm• More power for standard conditions and for applications
with:• High/low BTU fuels• High ambient temperature & high altitude
• 0.5 g/bhp-hr NOx and 1.8 g/bhp-hr CO emissions• ESM control, NOx sensor, engine-mounted components• NOx sensor and HMI panel provide real-time proof of NOx
emission compliance
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16V275GL Compressor PackageAlberta, Canada
ConfidentialConfidential
Questions?