air flow adjustment by adequate shape of the air funnel different angles of the air funnel cause a good adjustment of mixture ratio to load different openings of the air funnel, which depend on height of the opening and angle of the air funnel, can be read description ordernumber 195 see also: centrifugal governor of a DE (variable-speed governor) single-acting fuel pump for DE (Diesel engines) rotary pump pressurised lubricating oil circuit