| 摘要 |
A fuel pumping apparatus for supplying fuel to a compression ignition engine includes an injection pump having a cam ring which can be moved by a piston to vary the timing of delivery of fuel. The piston is biased by compression springs the extension of which is determined by a rod having a transverse pin engageable with cam surfaces defined on an annular member. An operating shaft can be moved angularly to move the pin angularly from a first to a second position so that it contacts a different portion of the cam surface, when it is required to start the engine. During this movement a spring is stressed and this when the engine starts, moves the pin to a third position for cold idling of the engine. When the engine is warm the shaft is moved to return the pin to the first position. |
