ROCKER ARM ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE

摘要

Disclosed is a rocker arm assembly (18) for an internal combustion engine comprising: a) two rocker arm members (16) each having first and second ends (20a, 22a; 20b, 22b); and b) transmitting means (6) for actuating a rocker arm member (16) to actuate engine valves (23, 24). Each rocker arm member (16) may be disposed on opposite sides of a longitudinal axis of the transmitting means which may be camshaft (202). The first and second ends of a rocker arm member (16) are arranged to reduce friction and minimise toppling moment of each rocker arm member (16). The engine valves may be inlet and exhaust valves (23, 24). The rocker arm assembly (18) is conveniently employed in a small displacement engine (100) having a plurality of spark plugs (40, 32) enabling efficient engine operation using lean fuel/air mixtures.