| abstract |
A small four-cycle aluminium internal combustionnengine (30) comprises a crankshaft (36), which isnjournaled to the engine block for rotation about ancrankshaft axis. A piston (38) reciprocates withinnthe bore (34) and is connected to the crankshaft by anconnecting rod (40) having oil splasher (60) formednthereon for intermittently engaging the oil within thenenclosed oil reservoir (58) to splash lubricate thenengine. The engine (30) is provided with a cylindernhead (42) assembly defining a compact combustionnchamber (44) having a pair of overhead intake exhaustnports (46, 52) cooperating intake and exhaust valvesn(50, 56). A lightweight high powered engine (30) isnthereby provided having relatively low HC and COnemissions. |