Oshkosh Corporation
Concrete buildup detection

Abstract:

A vehicle includes an engine, a drum, a drum drive system, and a control system. The drum drive system includes a pump configured to pump a fluid through a hydraulic system and a motor positioned to rotate the drum to agitate drum contents. The control system is configured to perform a calibration test to determine a baseline operating pressure of the fluid in the hydraulic system, perform a buildup detection test to determine a current operating pressure of the fluid in the hydraulic system, and determine that there is a buildup of the drum contents within the drum in response to a difference between the baseline operating pressure and the current operating pressure exceeding a threshold differential. In some embodiments, the calibration test and the buildup detection test are only performed if a temperature of the fluid exceeds a threshold temperature.