Just more improvements to a work in process. Its almost like DI is going through the same type of growing pains the port injection went through.
Ford themselves don't deny issues related to Di use.
Quote:
2013 study by Ford researchers on GDI particulates, is that direct injection of fuel into the combustion cylinder risks liquid fuel impingement onto the piston and cylinder surfaces and inhomogeneous air fuel mixing; consequentially PM formation is higher than in conventional PFI gasoline engines.
The answer to the DI problem seems to be in a hybrid type fuel system. Bosch has been working on one for some time as i understand it.
Quote:
As described in a paper published in MTZ on the development of the 1.8L TFSI EA888 Gen3 variant, the dual injection system opens up new levels of freedom for engine applications; mixture formation can be carried out by a combination of up to three direct injection events and the indirect injection
For now one solution would be to flag DI engine vehicles in the inspection data base and require an additional opacity test for them. If they have been tampered with they must be rejected and repaired and possibly retro fitted with some sort of particle filter.
Chip tuning must be made illegal and if caught the car must be removed from the road until it is put back in OE condition and the owners fined heavily.
When the car built it is certified to be in emissions compliance, chip tuning is not not subjected to the same rigorous testing. Basically the car is no longer in compliance and an outlaw on the road because it no longer has a valid emissions compliance certification.
In Germany when a car is certified it receives whats called an ABE (Allgemeine Betriebserlaubnis) anything you do to the car that can effect its handling, braking, safety or emissions in any way without a certification makes the vehicles own original OE ABE null and void.
IMHO We desperately need this sort of law here. Before anyone goes off the deep end and starts with oh great more regulation these are just some the benefits.
Parts that can effect the vehicles safety like brakes, rotors, suspension parts, steering parts, tires, lighting, wheels, body parts, etc if not OE must carry a ABE of their own.
Meaning they are certified to provide the same level of performance as OE and the vehicle can be safely operated at the speeds listed on the cars title and was original certified for.
Insurance companies don't have a loophole because you used an aftermarket wheel for example. You get paid the insurance company themselves go after the wheel manufacturer for selling a non compliance part with a ABE.
Its a win win for everyone and a much safer way of keeping cars running with better parts.
Just an early morning rant. I will wait for the spinners to get worked up in a lather. LOL
Edit: For clarification. By chip tuning i don't mean commercial tuning that has been done by reputable manufactures and are certified.
I mean the tune at home hand held units for manipulating the ecm at home with sometimes questionable files produced by god know who.