Electro-magnetic valve

Details Electro-magnetic valve Electro-magnetic valve

1976-09-29

1979-07-17

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

251141, 123 32EF, 123 32AB, 336222, 335299, F16K 3106, H01F 500, H01F 2128

Patent

active

041613066

ABSTRACT:
An electro-magnetic valve having a very fast response and a favorable temperature-gradient characteristic. The valve includes an iron core which carries a stationary magnetic winding within a valve housing, and a plunger coaxially oriented relative to the iron core and separated from the core by an air gap. The magnetic winding is made of a metal having a specific resistance greater than 20 milli-ohms per square millimeter of cross-sectional area per meter length at 20 degrees centigrade. The valve may also include a temperature compensating resistor connected in series with the magnetic winding.
When used in an electronic fuel-injection system for an engine having an even number of cylinders, in which one of these valves is used for each cylinder, these valves can be electrically paired, with one valve of each pair connected in series with the other valve of that pair, and connected to a power source without requiring the use of a compensating resistor in series with the magnetic winding of each valve, due to the identical short response time of each valve.

REFERENCES:
patent: 3130355 (1964-04-01), Younger
patent: 3476128 (1969-11-01), Barker
patent: 3778355 (1973-12-01), Johnson et al.

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