DEVICE FOR SUPPLYING SECONDARY AIR Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: device additionally has outlet passage, rod arranged inside the housing, and multistep gate mounted on the rod for permitting reciprocation. Damping space is arranged in the housing of a check valve and restricted by a cover and the multistep gate. Air ports provided in side walls of the housing can be connected with the passage for supplying secondary air. The passage is in communication with the exhaust manifold trough outlet passage made up as an ejector nozzle. EFFECT: improved design. 2 dwg