Commutator fits in fuel pump motors.
February 23, 2004 - Graphite Commutator allows consistent performance in various types and blends of fuels including gasoline, diesel, alcohol, ethanol, and methanol. It eliminates soldering of graphite to copper base, high temperature sintered and machined graphite disks, welded and exposed winding connections, and traditional commutator tangs. Flat and barrel versions are available with variety of graphite grades and different configurations for armatures.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Johnson Electric
Johnson Building
New Territories, ,
Hong Kong (prc)
New Johnson Electric Commutator for Fuel Pump Motors
The new Johnson Electric graphite commutator, used in its armatures that are fitted in fuel pump motors, improves corrosion resistance, increases reliability, and reduces cost.
The graphite commutator allows consistent performance in many types and blends of fuels including gasoline, diesel, alcohol, ethanol and methanol. However, the graphite commutators that were historically used in these types and blends of fuel, commonly called “flex-fuels”, have been expensive to produce. Johnson Electric has designed a lower cost, highly reliable graphite commutator that makes it feasible to utilize “flex-fuel” capability fuel pumps in most vehicles.
The Johnson Electric graphite commutator, which is currently in production, eliminates several costly problems and improves on the traditional design’s reliability, performance and efficiency by:
• Eliminating soldering of the graphite to the copper base
• Eliminating high temperature sintered and machined graphite disks
• Eliminating welded winding connections
• Eliminating exposed winding connections
• Eliminating traditional commutator tangs.
In order to provide top performance in a wide variety of fuels, Johnson Electric has developed both flat and barrel versions of this commutator with a variety of graphite grades and different configurations for its armatures. |
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