Fuel injection timing system
AssigneeTiming Systems, Inc.
InventorsMichael J. Devine, Robert L. Kiliz
Life of this patent
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Abstract
An electronic timing system for controlling the injection angle of a fuel pump, comprising an input sleeve (12), an output drum (36), an intermediate drive sleeve (30), a drive plate (60), a drive yoke (76), and a stepper motor (90). Drive sleeve (30) includes a pair of radially inwardly and outwardly projecting drive pins (32), and drum (36) and input sleeve (12) both include helical slots (38) and (16), respectively, through which pins (32) project. Vertical movement of yoke (76) causes axial movement of drive plate (60) and drive sleeve (30), which causes a relative rotational adjustment of angle between input sleeve (12) and output drum (36), for retarding and advancing the timing of the fuel injection system.
Claims7
A fuel injection timing system for controlling the angular position of a diesel engine fuel injection pump, comprising
- an output drive member adapted to be rotatably coupled to a pump shaft of the injection pump to rotate the injection pump shaft about its axis,
- an input drive member adapted to be rotatably coupled to a drive source,
- an intermediate drive sleeve axially movable along an axis of the pump shaft between the output and input drive members, and
- an actuator, movable along an axis perpendicular to the pump shaft axis, and coupled to the intermediate sleeve, to move the intermediate sleeve along the pump shaft axis,
- the intermediate sleeve coupled to the output drive member in a manner where movement of the intermediate sleeve along the pump shaft axis causes rotational movement of the output drive member about the pump shaft axis,
- the intermediate sleeve also coupled to the input drive member in a manner where axial movement of the intermediate sleeve causes the intermediate sleeve to rotate about the pump shaft axis,
- whereby the actuator axially drives the intermediate sleeve along the pump shaft axis to adjust the angular position of the output drive member relative to the input drive member.
Dependencies are inferred from the claim text.