Air pump activating equipment comprises four-stroke engine with camshaft in cylinder block and air pump integral with cylinder block having power transmitted to it by belt located between pump drive shaft and camshaft

摘要

The equipment for activating an air pump (61) comprises a four-stroke engine having a camshaft (41) located as part of the valves (38) operating device in a cylinder block (13). The air pump to which the power is transmitted from the camshaft has a pump body (63) integral with the cylinder block. The power transmission means comprises an endless transmission belt located between a pump drive shaft (73a) coupled to the air pump and the camshaft.