Exhaust gas control system of internal combustion engine

摘要

An exhaust gas control system of an internal combustion engine includes a urea water tank, a heater, a purifying device, a notification device, and a controller. The controller is configured to determine whether frozen urea water is left or not. The controller is configured to determine whether liquid urea water capable of being pumped out is not left or not. The controller is configured to estimate a suppliable amount of the urea water to the urea water tank in response to a state where the frozen urea water is left, and the controller configured to control the notification device so as to give a notification for prompting a supply of the suppliable amount of the urea water to the urea water tank in response to a state where liquid urea water capable of being pumped out is not left.

主权项

1. An exhaust gas control system of an internal combustion engine, comprising:
a urea water tank to store urea water; a heater to heat frozen urea water within the urea water tank; a purifying device configured to purify exhaust gas by addition of the urea water pumped from the urea water tank to the exhaust gas of the internal combustion engine; a notification device; and a controller configured to(i) determine whether frozen urea water is left within the urea water tank or not;(ii) determine, whether or not, liquid urea water capable of being pumped out is not left within the urea water tank;(iii) estimate an amount of urea water that can be supplied into the urea water tank in response to a state where the frozen urea water is left within the urea water tank; and(iv) control the notification device so as to give a notification for prompting a supply of the amount of urea water that can be supplied into the urea water tank in response to a state where liquid urea water capable of being pumped out is not left within the urea water tank.