Internal-combustion engines – Igniters – Incandescent
Patent
1977-12-20
1979-12-04
Myhre, Charles J.
Internal-combustion engines
Igniters
Incandescent
123139ST, 123140FG, 123179L, F02M 5942, F02D 104
Patent
active
041766423
ABSTRACT:
A starting control for a fuel injected diesel engine retards movement of the fuel injection control rack out of the starting position by a degree which varies with temperature to improve the starting characteristics of the engine without interfering with normal operation of the fuel injection system and its control rack. Movement of the control rack out of the starting position in response to the increasing force exerted by the governor on the control rack coupled floating lever of the fuel injection system is resisted by a damper in the form of a dashpot having a plunger coupled to the floating lever. The dashpot may be coupled to the floating lever by a pivotable crank and a pair of magnets respectively mounted on the crank and the floating lever, the magnets eventually separating to remove the starting control from the fuel injection system when the opposing forces of the governor weights and damper become great enough due to increased engine speed or when the crank reaches an adjustable limit stop. The dashpot plunger which has a one-way check valve mounted therein is quickly returned to the initial position in preparation for restarting or subsequent starting by a spring coupled to the crank. Alternatively, the dashpot plunger is coupled to the control lever by linkage which includes a spring. In this arrangement the starting control not only improves engine starting but also acts to damp and retard rapid motion of the control rack into higher load positions during normal operation so as to minimize unburned fuel and thereby greatly reduce smoke and other air pollution. The amount of retardation provided by the dashpot varies with temperature which in turn varies the viscosity of oil within the dashpot.
REFERENCES:
patent: 2845915 (1958-08-01), Frick
patent: 2945484 (1960-07-01), Scherenberg et al.
patent: 3938487 (1976-02-01), Peltret
Argenbright Tony M.
Deere & Company
Myhre Charles J.
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