Marine diesel engine
Four-stroke marine diesel up to 750 rpm with a separator and a two-chamber filter. Treated together with the fuel injection equipment.
Auxiliary marine diesel with turbocharging: 500 l oil sump, 88.2 l displacement
The rate matches the class standard — 0.9 ml per litre. The difference lies elsewhere: the cycle may be extended to 550 hours in cases of heavy wear. Industrial diesel engines →
What is treated
- A serviceable diesel with no parts at 100 % wear and no mechanical damage.
- Oil leaks and the causes of increased oil burn-off have been eliminated, filters replaced, separator cleaned.
What is measured before and after
| Parameter | Instrument | How and when |
|---|---|---|
| Maximum compression pressure or residual vacuum in each cylinder | special measuring instruments | At a fixed temperature. |
| Maximum combustion pressure in each cylinder | maximeter (valve-type device) | — |
| Volume of fuel consumed per unit of time | fuel flow meter | At idle or at fixed operating modes. |
| Oil pressure at a fixed temperature | standard or calibrated pressure gauge | — |
| Exhaust gas temperature in the manifold | non-contact thermometer (pyrometer) | — |
| Oil burn-off consumption over a fixed interval | measuring vessel | — |
Dosage rates
| Compound | Rate | How and when |
|---|---|---|
| Gel for diesel engines | 0.9 ml per 1 litre of the standard oil per stage | 500 l sump: 450 ml per stage, 1350 ml for three stages. Dissolve in 8–10 l of clean oil at 40–60 °C. |
| Gel for diesel engine fuel injection equipment | according to engine displacement, table 20.1 | For 88.2 l of displacement — 5 tubes. |
Treatment stages
- Add the first dose through the oil filler neck of the warmed-up engine.Start of operating-hours count
- Second stage — same as the first.After 8–12 engine hours
- Third stage — same as the first.After a further 8–12 engine hours
After treatment
- The full cycle is at least 400 engine hours; in cases of heavy wear it is extended to 550.
- Treatment of the high-pressure fuel pump is considered complete after 250 engine hours of main engine operation.
Points to watch
- Treat the fuel system using fuel appropriate to the season.
- If wear of the fuel injection equipment exceeds 50 %, the rate for the high-pressure fuel pump is doubled.
- If there is no improvement after 10 hours of operation, the diagnosis was most likely incorrect.
Where marine diesel engine has already been treated
- SE “Ukrvodput” · 2001↑ 19.3-37.2% — cylinder compression, 22.6-24.8 → 29.0-31.0 kgf/cm²
Source: XADO applied procedure, lead engineer I. N. Sharaikin. Class standard — instruction IE-24.6-25612000-005-2008, procedure No. 20. Analysis: state/DRIVE_METHODS.md.