CONSTRUCTION
An exhaust fuel addition injector is installed on the No. 4 exhaust port of the cylinder head. This injector supplies additional fuel into the No. 4 exhaust port and maintains the proper catalyst temperature for the purpose of PM recovery.
An exhaust fuel addition injector consists of a needle valve body, a needle valve, and a solenoid valve.
| *1 | Solenoid Valve | *2 | Needle Valve |
| *3 | Needle Valve Body | - | - |