Delayed Starting Problem of EDG

It is not clear whether you have ruled out problems in the electrical domain (batteries, starter motors etc.) How are you certain that the problem is with the diesels ?

1) what is your timing requirement to reach the rated rpm and frequency?

2) what is your timing requirement to be able for load take over?

3) what is te storage temperature of the unit when not in use?

4) Interval between full load usage or test runs?

5) What is the oil temperature when not in use?

6) How long does it take until exhaust is clear of black smoke.

Sorry my genset experience is years back - but for the appplication of a back-up genset in a high power TV transmitter we needed according customers requirements a fast startup and load take over of around 120kW within 10sec. We were also using a MTU diesel.

To reach that goal we needed to preheat the oil of the engine to around 60 - 70degC using a quite small circulation pump and a 60W heating element. These were continuously connected to mains supply.

The engine oil was continously circulated from the oil sump through the heater and back into the oil sump of the engine. With this construction we reached a better startup (clean exhaust after less than 20sec) better startup behaviour (always on first try) and very short time for full loadtaking and correct frequency. I donot know whether this is by now included into your genset - but the effect was really stunning If the add-on was disconneted and the engine oil was at room temperature of 20degC - the time for clean exaust was around 2 minutes. IT took 50 to 60 sec to full load take over at correct rpm and fdrequency.

I have no idea about the nozzels and the adjustment of the dieselpump in this case as this was done by MTU service personal.