Electromagnetic fuel injector

Patent · Tue Apr 28 00:00:00 EDT 1987

OSTI ID:6564630

Gieseking, J H

This patent describes an electromagnetic fuel injector for an internal combustion engine having a valve axis and including a housing, a flat armature connected to a movable valve element arranged to cooperate with a valve seat, spring means for exerting a force in an axial direction on the armature, and electromagnetic means for exerting a force in an opposite direction on the armature when electrically energized. The improvement comprises: the spring means being a helical coil spring disposed in substantially coaxial alignment with the valve axis and having an end in compressive engagement with the armature, the final coil which includes the end of the coil spring being inclined axially outward at an angle relative to a plane normal to the axis of the spring so as to apply to the armature a greater axial spring force to one side of the valve axis than the other thereby to effect pivoting of the armature about a pivot, the pivot being determined by the location of the end of the coil spring.

• Assignee: United Technologies Diesel Systems, Inc., Springfield, MA
• Patent Number(s): US 4660770
• OSTI ID: 6564630
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ALIGNMENT
ARMATURES
CONTROL EQUIPMENT
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MAGNETS
SPRINGS
VALVES
VEHICLES