Circuit for protecting against shorts in starter motor and...

F - Mech Eng,Light,Heat,Weapons – 02 – N

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Details

F02N 11/08 (2006.01) B60R 16/033 (2006.01) H02H 7/00 (2006.01) H02J 7/14 (2006.01)

Patent

CA 2639793

When an ignition switch (22) is operated to other than a start position for cranking an engine (20), a switch (relay 28) places a megafuse (30) in circuit with protecting cables to the electric starter motor (18) and alternator (16) to protect against shorts. When ignition switch (22) is operated to start position for cranking the engine (20), switch (28) removes the megafuse (30) from protecting the cables. If a short blew the megafuse (30) before starting, the ignition switch (22) cannot operate the switch (28) and the engine cannot be cranked.

L'invention concerne un circuit de protection d'un moteur à démarreur et câbles de charge de batterie contre les courts-circuits . Lorsque l'on met un commutateur d'allumage (22) à une autre position que celle du démarrage d'un moteur (20), un commutateur (relais 28) est mis en circuit avec le fusible MEGA (30) de façon à protéger le moteur du démarreur électrique (18), ainsi que l'alternateur (16), contre les courts-circuits. Si le commutateur d'allumage (22) est mis en position de démarrage pour lancer le moteur (20), le commutateur (28) met le fusible MEGA (30) hors circuit pour l'empêcher de protéger les câbles. Si un court circuit a fait fondre le fusible MEGA (30) avant le démarrage, le commutateur d'allumage (22) ne pourra pas actionner l'interrupteur et le moteur ne pourra être lancé.

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