Electromagnetically actuable fuel injection valve

Details Electromagnetically actuable fuel injection valve Electromagnetically actuable fuel injection valve

1998-08-21

1999-09-28

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Distributor having thermal expansion joint, differentially...

239900, B05B 130, B05B 1500

Patent

active

059573902

ABSTRACT:
An injection valve can compensate for the reduction in through-flow experienced with known valves operating at higher temperatures. By forming the valve needle and valve seat carrier from different materials and more particularly by using a material with a very low coefficient of thermal expansion for the valve needle, the valve needle expands less in comparison with the valve seat carrier when there is an increase in temperature. Thus, an increase in travel occurs and a reduction in the metered quantity of fuel due to the formation of gas bubbles is avoided. The injection valve is particularly suitable for use in fuel injection systems of mixture-compressing, spark-ignition internal combustion engines.

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