| 摘要 |
It is provided an improved internal combustion engine unit. The engine unit has a piston moving in a cylinder enclosing cylinder volume, an intake valve controlling closing and opening of an intake aperture connecting the cylinder volume to an intake manifold, and an exhaust valve controlling closing and opening of an exhaust aperture connecting the cylinder volume to an exhaust manifold. The improved engine unit includes a separating aperture between the cylinder and a separation chamber, and a separating valve adapted for controlling closing and opening the separating aperture. The separation chamber is connectable to the intake manifold and to the exhaust manifold, respectively, by the intake and exhaust apertures. Opening both the separating valve and the exhaust valve enables gas flow from the cylinder volume to the exhaust manifold through the open separating aperture, the separation chamber and the open exhaust aperture. Opening both the separating valve and the intake valve enables gas flow from the intake manifold to the cylinder volume through the open intake aperture, the separation chamber and the separating aperture. The intake valve and the exhaust valve are driven by solenoids controlled in turn by an engine computer. The separating valve is driven by a camshaft driven in turn by the engine. |
