Re: Re-power an Amel Sharki

Matt Salatino

Mechanical fuel injection is very reliable. It only needs clean fuel, and the lubricaring qualities of the fuel will keep the system happy for many years.
Commonrail fuel injection was developed to satisfy strict pollution requirements. The fuel is kept at high pressure behind all injectors (common rail) and the opening and closing of electronically controlled injectors is controlled by a computer. The computer can turn on and off the injectors rapidly, cycling the injectors multiple times during one combustion cycle. This allows the fuel to be burned to reduce pollution. 
Good on paper.
The problem arises if an electronic component, computer, injector, sensor, etc, fails. This requires an electronics tech to diagnose.
Also, and of most importance, a lightning strike can destroy the electronics, disabling the engine entirely. This can’t happen with mechanical fuel injection.
I was at the Annapolis Boat Show, admiring the Yanmar engines at their display. I asked a technician there what happens if the boat is struck by lightning. He replied that he just repaired a new engine that suffered a lightning strike. He replaced the computer, the injectors, and all sensors. The bill to the customer was $10,000.
A mechanically fuel injected engine would have no failure and subsequent repair bill.
Otherwise, no problems at all!😀


On Aug 23, 2020, at 11:41 AM, Elja Röllinghoff Balu SM 222 <Bijorka@...> wrote:

Please one question .
What is the problem with the commonrail technik on a sail boat ?

Thanks Elja
SM Balu 222

Von meinem iPhone gesendet

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