PLATE AS 6T8451 - Caterpillar

Monitoring Parameters To Improve Engine Reliability And Durability
Caterpillar establishes performance curves and engine information that is based on a bare engine at standard conditions. Technical Marketing Information (TMI) data is based on a bare engine without inlet air restriction, exhaust restriction, altitude compensation (500 ft). Data is corrected to SAE J1349 standard conditions of 100 kPa (29.61 in Hg) and 25 C (77 F). Ratings and TMI data also meet DIN 6271 standard conditions of 100 kPa (29.61 in Hg), and 27 C (81 F), and 60 % relative humidity.TMI data should be used as a guide since customer installations DO NOT generally operate under these same conditions. The best data for future reference is the performance data gathered at commissioning.Critical parameter guidelines and limits are outlined below to monitor parameters to improve engine reliability. Caterpillar recommends that these performance parameters be monitored and recorded at least once during daily operation. In some critical applications conditions should be recorded more frequently.Exhaust temperatures (inlet-to-turbo/exhaust manifold)
Exhaust temperatures measured at the inlet-to-turbo/exhaust manifold is a good indicator of engine performance and valve temperatures. The inlet-to-turbo temperature should be the first choice as performance indicator to monitor and record. Exhaust temperatures measured at the inlet-to-turbo are representative of actual valve temperatures for engines with dry manifolds.Inlet-to-turbo temperatures should be monitored frequently and as often as hourly for some applications or load conditions.