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I am also still trying to figure out how an Etec injector works. The Ficht used a metal rod driven by an external solenoid. What is the difference in Etec? Got a patent number or two? del cecchi Hi Del, It's been a long time. Check out Patent No.6398511 B1. It works like an audio speaker where a pulse of current makes the "armature" move forward, then an opposite pulse stops it and returns the "armature" to its home position. Unlike the FICHT injector, it does not depend on springs to return it to start its cycle all over again. It still is a "linear motor" attached to a pump, but according to the factory folks, it is not only more precise in delivery and supposidly operational up to 10,000 rpm, but it can "pump" more fuel in a shorter time frame so higher horsepower motors are possible. That is why Yamaha has to use such high pressures, now up to 1000 psi, is to flow enough fuel in the short amount of time it has between exhaust port closing and igntion. They still have to start fuel injection before the exhaust is closed and that is why they cannot meet 2008 emission specs, but only the 2006 ones.. From what I understand, OMC was working on this years back and now Bombardier has the resources to get it into production. It is a Bombardier patent and is not infringing on any Ficht family patents so they do not have to use the FICHT name. I haven't gotten to see or play with one yet but reports from the field testers say the E-TECH idles very slow and doesn't even ripple the water because it is so smooth. Time will tell when the production models roll off the line next month. According to Bombardier, by next year's model introduction, they will be the first company to have all their motors meet 2008 emission limits. I did watch a 3hp rope start E-TECH run 2 years ago. Carbureted small hp 4-strokes can't meet the more stringent emission levels, but E-TECH can. Bill Grannis service manager |
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