Exhaust temperature monitoring system

Details Exhaust temperature monitoring system Exhaust temperature monitoring system

1975-05-23

1977-05-17

Myhre, Charles J.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123198DB, 73137, 323 75H, 340 57, 733435, F02B 7708

Patent

active

040235491

ABSTRACT:
An exhaust temperature monitoring unit including a thermocouple connected in summation with a regulated signal across the differential inputs of an operational amplifier to provide a temperature signal which is independent of the thermocouple ground. The operational amplifier drives a photocoupler at the output which in turn controls three functions. The first function provides an immediate audio alarm when a differential unbalance in the overheated direction is applied to the amplifier, the other two functions turning on a recorder and reducing fuel flow to the engine after a predetermined time delay.

REFERENCES:
patent: 2359767 (1944-10-01), Keinath
patent: 3401274 (1968-09-01), Marsh
patent: 3568648 (1971-03-01), Cass
patent: 3599049 (1971-08-01), Barnard
patent: 3602207 (1971-08-01), Kilmer
patent: 3605711 (1971-09-01), Fuso
patent: 3763397 (1973-10-01), Yockers
patent: 3775745 (1973-11-01), Kelley
patent: 3817104 (1974-06-01), Sapir
patent: 3841291 (1974-10-01), Ludewig et al.
patent: 3851469 (1974-12-01), Eichler et al.
patent: 3895283 (1975-07-01), Peterson

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