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
Who has a Chemical Reactor Simulator?
I think we are at the point where we can run some simulations.
Need someone with a computational chemistry / chemical reactor simulator to start to test out some hypothesis.
Take some common components of diesel fuel (individually) and common additives, including aftermarket additives AND biodiesel additives and contaminants.
Lets run them on 2,000bar, the spec is probably around 50C but lets push that.
On the simulation, start with 2,500bar (not inconceivable with shock waves), and 150C (not inconceivable after a hot heat soak from a stop and then startup but before fuel circulation cools it back down.
Lets see how reactive the components of the DLC is at these temps.
Ditto test for materials in pump, plus things like iron oxide (rust) normally found in fuel systems.
Another note: dissimilar metals in pump etc. lead to galvanic corrosion.
I seriously think the piston and cylinder bore is actually coated --- maybe not with the same high priced DLC, but with something.
If they are not coated.. can the piston be made with a different material metal wise and not be reactive against the aluminum bore?
Suppose the pump is allowed to "sit"?
I think we are at the point where we can run some simulations.
Need someone with a computational chemistry / chemical reactor simulator to start to test out some hypothesis.
Take some common components of diesel fuel (individually) and common additives, including aftermarket additives AND biodiesel additives and contaminants.
Lets run them on 2,000bar, the spec is probably around 50C but lets push that.
On the simulation, start with 2,500bar (not inconceivable with shock waves), and 150C (not inconceivable after a hot heat soak from a stop and then startup but before fuel circulation cools it back down.
Lets see how reactive the components of the DLC is at these temps.
Ditto test for materials in pump, plus things like iron oxide (rust) normally found in fuel systems.
Another note: dissimilar metals in pump etc. lead to galvanic corrosion.
I seriously think the piston and cylinder bore is actually coated --- maybe not with the same high priced DLC, but with something.
If they are not coated.. can the piston be made with a different material metal wise and not be reactive against the aluminum bore?
Suppose the pump is allowed to "sit"?
