Brake controlled ignition retarder

Details Brake controlled ignition retarder Brake controlled ignition retarder

1975-01-16

1976-02-24

Wyche, Benjamin W.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

B60K 2902

Patent

active

039399486

ABSTRACT:
An ignition retarding device which cuts off the usual vacuum ignition advance to retard the ignition when the brakes are actuated or when the engine speed drops below a predetermined value, there being a further device responsive to engine temperature to restore the vacuum ignition advance whenever the temperature of the engine rises above a predetermined value. The speed is measured by an electronic tachometer whose input is connected across the distributor points and whose output is fed through a voltage comparator and an amplifier to control the energization of an electrically operated valve. The override brake and temperature signals are obtained by connections to the usual brake switch and temperature switch. Provision is made for use of the equipment with automotive vehicles either in which the brake switch is between the brake light and ground or between the battery and the brake light.

REFERENCES:
patent: 2793706 (1957-05-01), Moreland
patent: 3023870 (1962-03-01), Udelman
patent: 3581852 (1971-06-01), Griffen

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