Hammerdown®
Case Study:
Main engine: Mercedes OM 404 A (455 HP)
Variable route in Norwegian coastal waters carrying vegetable oils.
Treatment of diesel fuel with DFT #1500 "HAMMERDOWN" began early 1993.
"The engine was completely overhauled this
month. There was minimum soft carbon and soot on the injectors, cylinder heads,
pistons and piston rings.
"The injectors had 5300 hours since the last
overhaul, and the spray pattern was very satisfactory. Normal pressure on
overhauled injectors is 260 kg/cm2; before overhauling, we measured
255 kg/cm2; which is very acceptable.
"Cleaning of all engine parts was easily
accomplished using just rags, soap and water.
"Similarly, smoke has been so little that it
cannot be seen while underway. Also the exhaust temperature is approximately 200
degrees C, which is very satisfactory.
"Fuel consumption has been reduced from 56 l/hr to
48 l/hour."
s/ Stig E. Benjaminsen
Chief Engineer
Engine Report, April 28, 1995
[click images to enlarge]
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| Typical Cylinder Head Uncleaned | Typical Piston Uncleaned |
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| Cleaning piston with soap and water | Piston after cleaning |
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