An ignition system includes a signal generator unit 1 comprising a sensor core/coil, and an electronic circuit unit 2 including various components mounted on a substrate board. Both units are accommodated within a unitary casing comprising a frame 5 and a heat sink 10 on which the board is mounted. The casing has an open end or face in which the core is mounted in proximity to an engine driven rotor. The interconnecting leads between the coil and substrate board include terminal plates 6 and short straps 7 to avoid spurious high frequency radiations and induced signals.

Ignition system for internal combustion engine

PURPOSE:To constitute an ignition device as the shortage of the primary current of its ignition coil does not occur, by constituting it so as to add a definite angle width detected by a pulser and a time computed by the operation of a circuit closing rate control circuit CONSTITUTION:Angle positions theta1, theta2 of a rotor 1 rotating synchronously with the rotation of an engine are detected by a pickup, and a circuit connected by a flip-flop to the primary side of an ignition coil during the phase of angle from theta1 to theta2, and a circuit closing rate control circuit 5 allowing a current to flow at a definite rate from the position theta1 through a process shown by (d)-(g) in a figure are provided Then, at the time of low speed or rapid acceleration when the error of the circuit closing rate control circuit becomes large, the coil is turned on electricity at a definite angle by opening a switch 6, and at the time of high speed or the like, the coil is turned on electricity through a circuit of a definite circuit closing rate Thereby, an ignition device in which the shortage of a primary current sent to the ignition coil at the time of low speed and rapid acceleration does not occur can be obtained

Ignition device of internal combustion engine

PURPOSE:To make it possible to feed sufficient ignition energy even upon high speed running, by independently arranging a gate circuit for distributing an output signal from an ignition timing computing circuit and another gate circuit for distributing an output signal from an energizing angle control circuit. CONSTITUTION:Output signals from first and second angular position detectors 1, 2 for detecting the rotational angular position of an internal-combustion engine, are delivered to and timedly composed in series, in a gate circuit 3 which delivers an output signal to an ignition timing computing circuit 4 and an energizing angle control circuit 5. Further, there is provided an FF6 which is set by the output signal of the circuit 2 but reset by the output signal of the device 1. Furthermore, there are provided second through fifth gate circuits 7 through 10 which deliver a logic AND of the output signal of the computing circuit 4 and the output signals (m, n) of the FF6, and another logic AND of the output signal of the control circuit 5 and the output signals (m, n) of the FF6. By obtaining a logic OR of the outputs of the gate circuits 7, 9, 8, 10, ignition coils 15, 16 are controlled.

Ignition device in internal-combustion engine

Electromotive tooth brush

PURPOSE:To improve engine performance providing sufficient igniting energy by maintaining sufficient igniting energy and spark duration under high speed operation of an engine as well by checking spark energy fall off due to high voltage electric system.

Hino Toshiyuki

Papers

Igniting device for internal combustion engine