| 摘要 |
PCT No. PCT/SE89/00582 Sec. 371 Date Jun. 21, 1991 Sec. 102(e) Date Jun. 21, 1991 PCT Filed Oct. 24, 1989 PCT Pub. No. WO90/04709 PCT Pub. Date May 3, 1990.On the rotary drive shaft of a four stroke engine is non-rotationally mounted a hub supporting four cylinders wherein pistons are arranged for reciprocal movement radially towards the hub. The hub is providing with a combustion chamber having common inlets and outlets formed in a valve ring rotating together with the hub and sealingly abutting against a stationary port ring having intake and exhaust ports communicating with inlet and outlet channels arranged alternatingly to assume a position in registry with the inlets and outlets associated with the respective combustion chamber. One spark plug for each combustion chamber is arranged to rotate with the hub, with the spark plug electrode end projecting into the associated combustion chamber opposite the common valve ring inlets and outlets. |
