Fuel injector clamp
View Patent ↗A method of forming a fuel injector clamp utilizing powder metal techniques is provided. A powder metal charge comprising in percent by weight, 0.6-0.9 carbon, 1.5-3.9 copper, 93.2-97.9 iron with the balance other elements, is die compacted to a density of 7.0-7.1 grams per cubic centimeter pre-sintered at 1500-1600 degrees Fahrenheit to form a powder metal blank. The powder metal blank is then lubricated and re-compacted to at least 7.3 grams per cubic centimeter and sintered at 2050 degrees Fahrenheit to form a final powder metal blank. The fuel injector clamp itself is comprised of a unitary structure of powder metal having a generally cylindrical center portion, with a first wing portion extending laterally there from and a second wing portion extending laterally there from at a 180 degree angle from the first wing portion.
1. A fuel injector clamp comprised of a compacted, sintered powder metal comprising, by percent weight, 0.6-0.9 carbon, 1.5-3.9 copper, 93.2-97.9 iron, with the balance other elements, having a density of at least 7.3 g/cc,
the fuel injector clamp comprising a unitary structure having a generally cylindrical center portion having a center opening, with a first wing portion extending laterally there from and a second wing portion extending laterally there from at a 180degree angle from the first wing portion,
the center portion having a lower surface, and a first support edge extending downwardly from the center portion lower surface adjacent the first wing portion,
and a second support edge extending downwardly from the center portion lower surface adjacent the second wing portion,
and the center portion lower surface extending downwardly beyond the first support edge and the second support edge.
2. The fuel injector clamp of claim 1
wherein when the fuel injector clamp is subjected to a downward load at the first and second wing portions, the first and second support edges move downwardly to a plane even with the center portion lower surface.
3. The fuel injector clamp of claim 2 wherein the downward load is less than the elastic limit of the fuel injector clamp.
4. The fuel injector clamp of claim 1 wherein the fuel injector clamp is installed in an engine, and a fuel injector is placed through the center opening in the center portion of the fuel injector clamp,
the fuel injector including a generally flat support having an upper surface that faces the center portion lower surface of the fuel injector clamp,
wherein when the fuel injector clamp is subjected to a downward load at the first and second wing portions, the first and second support edges move elastically downward to control the fuel injector support upper surface.
5. The fuel injector clamp of claim 4 wherein the downward load is a force of between 10,000 (2250 Lbs) and 23,300 (5250 Lbs) newtons,
6. The fuel injector clamp of claim 4 wherein the first and second support edges move elastically downward a distance of between 0.63 and 1.0 mm (0.024-0.040 in).