Injector for engine exhaust gas purifying apparatus

摘要

An injector (10) injects a reducing agent (52) into an exhaust passage (18) formed between an engine and a catalytic converter in an engine exhaust gas purifying apparatus for purifying engine exhaust gas using the catalytic converter mounted in the exhaust passage (18) of the engine. The injector (10) includes at a tip end thereof a protector (38b) for preventing an injection nozzle (38a) of the injector from being directly exposed to an engine exhaust gas flow (14).