| 摘要 |
PURPOSE:To improve the practicality of a safety controller, by installing a manual switch capable of suspending a fuel pump at will, in case of a device which cools fuel in a way of making the fuel pump operate for a set time when the temperature of fuel fed to an engine after stoppage reaches the setting upper limit. CONSTITUTION:In a state of engine running, when a common contact C0 of an ignition switch SW1 is turned to the OFF side of an open contact, contacts a1 and b of a relay RL1 are opened and closed respectively, and thereby ignition circuit load L comes into a state of non-continuous rating, stopping an engine, while a motor M for fuel pump use comes to a stop as well. When the temperature of fuel fed to an injector reaches the setting upper limit, each of temperature switches SWT1 and SWT2 is closed, and a transistor Tr1 is turned to ON extending for the setting time of a timer circuit T. with this, a contact a2 of a relay RL2 is closed, then the said motor M is driven and the fuel is circulated. When a manual switch SWM is opened as occasions demand, the motor M is stopped at once. |
