yep, this diagram shows the mechanical operation of pump with relation to the spill valve. Thats the easy part to understand as the pump will either be in a state of suction,inactive or pressure sroke.
Switching the spill valve itself to either on/off coupled with the cam lobe timing will determine the above.
Just wondering if anyone has any evidence or theorys on how the EDU determines when to energise the spill to either on/off to determine pump or suction of fuel. i.e. it can be switched per 120' cam rotation, but pressure stroke would need to be done when all injectors are closed. so does the 120' point relate to the end of an injection timing event.
i guess without this knowledge full standalone control of d4s will remain unlikely.
Quote:
Originally Posted by arghx7
All I've got for you is a service manual diagram...
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