SCHALTUNGSANORDNUNG ZUM SYNCHRONISIEREN EINES FOLGEEINSPRITZSYSTEMS FUER EINSPRITZMOTOREN MIT DER ZYLINDERTAKTFOLGE

Synchronizing means for sequential fuel injection wherein valve actuator means are energized in response to signals from sequencing and timer circuits. Triggering signals are applied to the sequencing circuit, including an indexing pulse developed in predetermined phase relation to each and every power stroke of the engine and a reset pulse in predetermined phase relation to the power stroke of a predetermined one of the engine cylinders. The sequencing circuit includes a digital counter which is indexed by the index pulses and which is reset by the reset pulses. In one embodiment, an index pulse generator is connected to ignition pulse generating means of the engine, preferably in circuit with an ignition coil primary, and a reset pulse generator is connected to one output of the distributor. In another embodiment, the index and reset pulses are generated inductively in response to rotation of engine parts.