INTERNAL COMBUSTION ENGINE SYSTEM, WHITE DEPOSITION AMOUNT MONITORING DEVICE FOR INTERNAL COMBUSTION ENGINE SYSTEM, AND WHITE DEPOSITION AMOUNT MONITORING METHOD FOR INTERNAL COMBUSTION ENGINE SYSTEM

摘要

Provided are an internal combustion engine system, a white deposition amount monitoring device for an internal combustion engine system, and a white deposition amount monitoring method for an internal combustion engine system with which it is possible to increase the accuracy of estimating the amount of white deposition. The internal combustion engine system is provided with: an SCR catalyst disposed inside an exhaust pipe through which exhaust air from the internal combustion engine flows, the SCR catalyst using urea aqueous solution supplied to the exhaust pipe to purify nitrogen oxides in the exhaust air; a condensed water amount calculation unit that calculates the amount of condensed water in the exhaust pipe; and a white deposition amount estimation unit that estimates the amount of white deposition deposited inside the exhaust pipe on the basis of the amount of condensed water calculated.