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Originally posted by breakdowntruck2 View PostJAP4X4PART ¬ THE BIGGEST SURF BREAKER IN THE UK ¬
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Originally posted by breakdowntruck2 View Postso it over fuels it under acceleration?no im fine ty
This allows /disallows a few things andy.With a rotary pump, you can calibrate it,to deliver the same amount of fuel per injection stroke, but you cant phase it, as you can with an inline pump,bt this aint necesary for a rotary.The rotarys are also the precursors for common rail,where a high pressure pump keeps the psi up in the delivery bar, but lets the various elements take care of the fuel being injected,mostly electronically,,,,,these injectors are not running at capacity,andare capable of delivering a few more cc's of fuel than the pump delivers.
These injection systems are quite rudimentary,having been trialled on a few commercials as well. Im sure surfenstein will correct me if im wrong, but perkins ( a favourite marine application) used something akin to this on their road going engines.when i did my apprenticeship we had various wagons....Dodge, Ford D series, etc that used this aftermarket application,and it never did any harm to them,chiefly because the injection system was never running at full chat.Some of the later ford cargo's (i seem to remember) had this application driven by the ecu, rather than voltage from the back of the pump.Even nowadays, a coach i had in the mid 90's a scania 124 had this fitted, it was a mechanically fuel injected engine, and it took a start signal from a tps sensor on the back of the pump.When we upgraded to a newer model (with EFI|) it took a signal again from the engine AND gearbox ecu as over revving was a an issue that needed to be addresed and avoided...its old hat and has popped its head up in various guises for a long time.Non intercooled nothing.
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Originally posted by gwh200 View PostYou have a rotary type injection pump,as do all the efi surfs apparently.
This allows /disallows a few things andy.With a rotary pump, you can calibrate it,to deliver the same amount of fuel per injection stroke, but you cant phase it, as you can with an inline pump,bt this aint necesary for a rotary.The rotarys are also the precursors for common rail,where a high pressure pump keeps the psi up in the delivery bar, but lets the various elements take care of the fuel being injected,mostly electronically,,,,,these injectors are not running at capacity,andare capable of delivering a few more cc's of fuel than the pump delivers.
These injection systems are quite rudimentary,having been trialled on a few commercials as well. Im sure surfenstein will correct me if im wrong, but perkins ( a favourite marine application) used something akin to this on their road going engines.when i did my apprenticeship we had various wagons....Dodge, Ford D series, etc that used this aftermarket application,and it never did any harm to them,chiefly because the injection system was never running at full chat.Some of the later ford cargo's (i seem to remember) had this application driven by the ecu, rather than voltage from the back of the pump.Even nowadays, a coach i had in the mid 90's a scania 124 had this fitted, it was a mechanically fuel injected engine, and it took a start signal from a tps sensor on the back of the pump.When we upgraded to a newer model (with EFI|) it took a signal again from the engine AND gearbox ecu as over revving was a an issue that needed to be addresed and avoided...its old hat and has popped its head up in various guises for a long time.How can I be lost when I've got no where to go
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