| 摘要 |
An air charging assembly comprises a positive displacement supercharger (1) having a diaphragm (4) which is mounted on a piston plate (5) reciprocated by a rod (24) between, in this case, a hole (7) and a reed valve (8) feeding a supercharger air outlet manifold (9) in which is mounted a supercharger valve (10). Reed valves (6) are provided in the piston plate (5). The engine (20) has a conventional air inlet valve (22) in an air inlet (26) fed with normally aspirated air from a manifold (15) through a non-return manifold inelt valve (16). In use, the engine (20) receives air from the air manifold in normal manner and before the inlet valve (22) closes, the supercharger diaphragm (4) is in the position illustrated having completed its compression stroke, the supercharger valves (8) and (10) open and a pulse of air is delivered into the air manifold (15) and into the cylinder (23) through the inlet valve (22). Various forms of single and double acting positive displacement supercharger are illustrated. |
