![]() So, under very strictly controlled conditions the system will try to increase spark advance itself (Yes - This engine self tunes) in order to improve engine efficiency to the maximum your fuel will allow. and an infinitely variable ignition system that reacts directly to the inferred octane and runs advance appropriate to the load table it is running in. The Ford solution is called an Octane Adjust Ratio (OAR) and the strategy controls access to three distinct load (think boost) limiting tables which we can for the sake of discussion call Low (93), medium (95) and high (97) octane tables. This "pro-active" system would stop the constant knock and therefore avoid the cumulative damage that still afflicted older systems. In essence, they wanted a way to detect bad fuel and "De-Tune" the system with less advance and less load to make it more suitable for the poor fuel in the tank right now. They wanted to come up with a way to determine what the octane of the fuel in the tank was likely to be and then recalibrate the spark and load maps "pro-actively". So the manufacturers started to look for ways to enhance the standard knock control system. Whilst the traditional knock system should stop the engine being destroyed by a major single event of extreme knock, it doesn’t stop what we call "cumulative damage" which is the damage done by thousands of small knock events over a period of time that eat away at the ring lands etc. Every knock event adds a lot of heat and stress to the pistons, cylinders and bearings. So the engine still knocks a lot if you are running a fuel that isn’t good enough for your current calibration. The subsystem is the same, but the OAR strategy adds some much needed intelligence to the primitive knock control system.ĮCU's have of course had knock control for tens of years, but simple knock control is quite flawed because if you run bad fuel constantly, the ECU is constantly having to retard to stop the bad knock because the system is only "reactive" meaning that it can only act AFTER a knock event was sensed. How does it work? Is it not just the same as knock control? This is the only system on the vehicle that stops you killing your engine with bad fuel.Īll manufacturers cars now do this to some extent, but Fords recent strategies use this proprietary and patented OAR system as their solution and it is only this system we will discuss today. The PCM actually knows the difference between an engine that is running well and one with poorly combusting fuel running into knock and it can adjust its spark and load allowance accordingly, per firing event, in order to combat the knocking fuel. It has two little microphones called knock sensors that are tuned to your engines specific cylinder frequency and this noise data is fed back to the PCM constantly. The PCM running your 2 and 2.3 litre Ecoboost engine is constantly listening to the noise that the engine makes. We have been harnessing its power now for over 11 years and have never seen any need to disable it. This strategy is proprietary Ford code and it has been in place on every car Ford have sold since at least 2012. It has nothing whatsoever to do with COBB, with MSD, or with any other tuner. "My back would be destroyed.First of all, you need to understand that this is a FORD octane prediction and self tuning strategy. "It's a good thing I usually don't shoot like that," Young says. Strapped to it were two Canon 5D Mark IVs cycling between 24–70mm, 100–400mm, and 70–200mm lenses. ![]() (A/C units are often removed for weight savings.) To accommodate the run-and-gun style of working for this project, he bought a camera holster. Images in the project span portraiture, reportage, and action photos, some of which were shot from the sweltering cabin of a drifting car. For Young, instead of homesteads on the prairie, he found tents on a racetrack nestled in the desert. Derived from a 1872 poem titled "My Western Home" by Brewster Higley, the song is a dedication to the bucolic America that westward settlers found. ![]() It's private property in the middle of the desert with a paved go-kart course." Although Young didn't intend to title his project after the Western folk anthem "Home on the Range," the parallels between the two are uncanny. "There are no set rules since it's not a racetrack. "It's the Wild West," says Alex Velasquez, one of the more experienced drivers who serves as unofficial track warden.
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