| 摘要 |
An internal combustion engine having at least one cylinder (2) with a primary piston (3) slidable therein, the primary piston (3) being linked to a crankshaft (4) to provide power output from the engine, is characterised in that the upper part of the cylinder (2) has a secondary piston (5) slidable therein, the secondary piston being driven by cam means (9) which are in turn driven by said crankshaft (4) and being arranged to move at least to maintain the compression of the charge after the primary piston passes top dead centre, whereby ignition of the charge can take place when the primary piston has passed top dead centre. |
