초록 ▼

A turbine engine may occasionally be required to operate momentarily at an overtemperature condition which, provided it does not exceed a predetermined maximum temperature and time duration, is known to be harmless. A temperature read-out device attached to an engine operating under such conditions

A turbine engine may occasionally be required to operate momentarily at an overtemperature condition which, provided it does not exceed a predetermined maximum temperature and time duration, is known to be harmless. A temperature read-out device attached to an engine operating under such conditions would measure this harmless overtemperature transient, indicate an overtemperature state, and display a warning. The circuitry of the present invention monitors a signal representing engine temperature, and beginning at the start of the harmless overtemperature transient, and generates an opposing compensating signal for a predetermined period of time. The opposing compensating signal is combined with the signal representing engine temperature and the resultant signal, is applied to the temperature readout device so that the signal representing engine temperature is reduced below the level which would cause an overtemperature condition to be indicated on the temperature readout device.

대표청구항 ▼

An engine transient compensating circuit comprising: means for sensing the temperature of an engine which may have a harmless overtemperature transient for a predetermined period of time, and for providing a signal representing said temperature; means for generating an opposing compensating signal m

An engine transient compensating circuit comprising: means for sensing the temperature of an engine which may have a harmless overtemperature transient for a predetermined period of time, and for providing a signal representing said temperature; means for generating an opposing compensating signal modified to reduce said transient, for a period of time approximately said predetermined period of time, including a capacitor and switching circuit means for initiating the charging and discharging of said capacitor to form the opposing compensating signal; means for combining said temperature signal and said compensating signal to provide a compensated output signal in which said overtemperature transient is reduced; means for displaying temperature readout including an overtemperature warning; and means for applying said compensated output signal to said displaying means so that said overtemperature transient does not produce an overtemperature warning under normal operating conditions, but an abnormally high transient overtemperature condition will still produce an overtemperature warning.