Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
Back the the pulse timing of the pump.
In a gas motor timing of the spark (what triggers combustion) is advanced by the distributer (or computer) as rpms increase.
In modern diesels the timing is controlled by the computer sending signals to the injectors (which triggers combustion). Diesel burns slower than gas and I am sure is injected slower than the speed of a spark in a gas motor....So I surmise that signifignant advancing of the injection would be required as rpms increase.
For some reason Bosch wants the pumps pulses to match when the injectors fire.....But unless there is some sort of advance mechanism built into the pump (I don't think there is) it is impossible for the injectors/pulses to stay in sync.
The 100,000 dollar question is: Why does Bosch want them in sync?
If it is to prevent cavitation, then we could have a failure cause identified....And just as importantly a retrofit kit would be possible.
I would think that a properly sized accumulator tank should be pretty simple to plumb into the existing systems.
I am not suggesting that this theory derail thinking of other possibilites, just that this one be fully explored
In a gas motor timing of the spark (what triggers combustion) is advanced by the distributer (or computer) as rpms increase.
In modern diesels the timing is controlled by the computer sending signals to the injectors (which triggers combustion). Diesel burns slower than gas and I am sure is injected slower than the speed of a spark in a gas motor....So I surmise that signifignant advancing of the injection would be required as rpms increase.
For some reason Bosch wants the pumps pulses to match when the injectors fire.....But unless there is some sort of advance mechanism built into the pump (I don't think there is) it is impossible for the injectors/pulses to stay in sync.
The 100,000 dollar question is: Why does Bosch want them in sync?
If it is to prevent cavitation, then we could have a failure cause identified....And just as importantly a retrofit kit would be possible.
I would think that a properly sized accumulator tank should be pretty simple to plumb into the existing systems.
I am not suggesting that this theory derail thinking of other possibilites, just that this one be fully explored
