| 摘要 |
A vacuum actuated ignition spark energy level control circuit for increasing the ignition spark energy level upon engine deceleration. The stationary contact and a normally open movable contact, operable to an electrical circuit closed condition, of an electrical switch are connected across at least a portion of the ballast resistance connected in series with the ignition coil primary winding while the engine is in the running mode. A pressure responsive electrical switch operating device, in communication with the intake manifold of the associated internal combustion engine, is operatively connected to the movable contact of the electrical switch for operating the movable contact to the electrical circuit closed condition upon engine deceleration to reduce the value of ballast resistance connected in series with the ignition coil primary winding.
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