Air cylinder of internal-combustion engine and a method for reducing NOx in air cylinder for secondary action

摘要: Disclosed are an air cylinder of internal-combustion engine and a method for reducing NOx in the secondary action. A reductant ejector is mounted inlet engine, exhaust passage selector valve catalyst device on pipe cylinder, parallel connection. The action includes that single-cylinder six-stroke completes working cycle after fresh subjected to six strokes 'injection, compression, burning action, compression spraying solution, expansion exhaust' entering cylinder; double-cylinder eight-stroke bicirculating eight exhaust, high-temperature injection, exhaust'. By problem SNCR (selective non-catalytic reduction) has strict requirements reaction temperature solved, can be reduced act secondarily, so oil consumption reduced.