Internal-combustion engines – Starting device – For airplane
Patent
1986-10-23
1988-04-26
Dolinar, Andrew M.
Internal-combustion engines
Starting device
For airplane
123179M, 180287, 307 10AT, 290 38R, B60R 2500, F02N 1108, F02N 1110
Patent
active
047397365
ABSTRACT:
A system for energizing a motor vehicle engine includes an energy source (e.g. a battery), an ignition switch, a pinion, a motor, a pull-in coil, a holding coil and a magnetizable core movable upon the engerizing of the pull-in coil. The pull-in coil, the holding coil and the core are disposed within a housing. The system also includes first and second switches each disposed within the housing and closed upon the movement of the core. The system further includes a control system disposed within the housing and operable when the ignition switch has been closed in a particular sequence such as that produced by short intervals between first closings and pauses between other closings. When the control system is operated, current flows through the pull-in coil, causing the core to be moved to a position closing the first and second switches and moving the pinion to a position coupling the engine to the motor. The closure of the first switch connects the energy source directly to the motor. The closure of the second switch causes a circuit to be established from the energy source to the holding coil. By including the second switch, the system cannot be circumvented by increasing the voltage on the holding coil in an effort to make the holding coil perform the function of the pull-in coil-namely, moving the core.
REFERENCES:
patent: 3609383 (1971-09-01), Welsh
patent: 4533016 (1985-08-01), Betton
patent: 4551630 (1985-11-01), Stahura et al.
Dolinar Andrew M.
Macy M.
Retsky Marvin
Roston Ellsworth R.
Schwartz Charles H.
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