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NEWS
Jakarta, 2 July 2004
Ceramic Exhaust Coating Tested on KPC (Kaltim Prima Coal) 350t
Hitachi excavator.
Manifold
Coating:
Cermachrome (IndyKrom)
base coat; Black Satin (IndyBlak) top coat. Applied to exhaust
manifolds and turbo exhaust housings both inside and out.
Test Machine:
Hitachi EX3500-2 Hydraulic Excavator
Test Engines:
Cummins K-T38 C
900, 900HP @ 1,800 R.P.M.
Engine Load
Factor:
85%+
Test
Instrument:
Testo 177-T4 Temperature Data Logger. (German)
Test Probes:
Stainless Shrouded 4 metre Thermocouples.
Test
Conditions: (Uncoated Engine)
Excavator was stopped for daily fuelling. Test instrument was
attached to the bulkhead of the L/H engine room. Test probe was
clamped to the No: 1 and 2 exhaust manifold of the L/H (non
ceramic coated) engine. Instrument was set to take a temperature
reading every 1 minute for a 24 hour period.
Operating Hours
of Excavator during test:
23 Hours.
Test
Conditions: (Ceramic Coated Engine)
Excavator was
stopped again for daily fuelling. Data from test instrument was
downloaded to laptop. Test probe was removed from the L/H
uncoated engine and clamped to No: 1 and 2 exhaust manifold of
the ceramic coated R/H engine
Operating Hours
of Excavator during test: 23.5
Hours
Note* Same test
probe used for uniformity of test.
Test instrument
was again programmed to take a temperature reading every 1
minute for a 24 hour period.
Following the
ceramic engine test the excavator was again stopped for fuelling
and the test instrument removed and the data downloaded to
laptop.
Test
Results:
Uncoated
Engine:
Number of
Readings: 1,388
Max Temperature
Recorded: 346.2 C
Min Temperature
Recorded: 68.5 C
Average
Temperature Recorded: 263.1 C
Number of
Readings Above 207 C (Ignition Point of Hydraulic Oil): 1,193
Average
Percentage of Readings Above 207 C: (Ignition Point of Hydraulic
Oil): 85%
Average
Percentage of Readings Below 207 C: (Ignition Point of Hydraulic
Oil): 15%
Ceramic Coated
Engine:
Number of
Readings: 1,388
Max Temperature
Recorded: 211.7 C
Min Temperature
Recorded: 47.4 C
Average
Temperature Recorded: 94.0 C
Number of
Readings Above 207 C (Ignition Point of Hydraulic Oil): 2
Average
Percentage of Readings Above 207 C (Ignition Point of Hydraulic
Oil): .001%
Average
Percentage of Readings Below 207 C: (Ignition Point of Hydraulic
Oil): 99.99%
Percentage of
Temperature Reduction Ceramic Coated Manifolds versus Uncoated
Manifolds: Max Temp: 39%
Percentage of
Temperature Reduction Ceramic Coated Manifolds versus Uncoated
Manifolds: Min Temp: 31%
Percentage of
Temperature Reduction Ceramic Coated Manifolds versus Uncoated
Manifolds: Avg. Temp: 64%
Test
Data (pdf format):
KPC Hitachi EX3500 Ceramic ManifoldTest
(106kb,
 )
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