Oil Circulation in the New Daimler Oil Engine
Page 27
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WiEN dealing with the new Daimler 8.6-litre oil engine in our issue dated April 27, particular attention was
drawn to the extremely thorough provision ntade for effective lubrication.
The accompanying part-sectional line drawing, which we have had specially prepared, shows, together with many Dther points, the main features of the jil circulatory system.
A gear-type pump is responsible for picking up the oil, which is drawn lrough a brass-wire-mesh screen sub
merged in the sump. The entire output .rom the pump passes through a Tecale nit filter which is at the front of the r-ig-ine as shown. From this point a tee gallery pipe delivers the oil to :ach main bearing.
Oilways are drilled in the crankshaft o feed the big-ends, and in the conrecting-rods to conduct oil to the small nds.
To lubricate the rear camshafrt bearng, an internal oilway is taken from he rear main bearing. Ports are formed a the shaft for the purpose of meterag the supply to the timing-gear train nd to the overhead valve gear.
Oil is fed to each rocker bearing and Etrough bleed holes to the ends of the -miters, the surplus oil from these areas raining down to the camshaft chamber inch has weirs cast in. These weirs rovide for the maintenance of a suffient level of oil into which the cams ip as they revolve, the lubrication of le seven camshaft bearings also being isured' through this arrangement. A 7essure of 60 lb. per sq. in. is that )1-malty maintained.