The Bz.IV was a dual-camshaft design, with two intake and two exhaust valves per cylinder. The cylinders were cast iron surrounded by a sheet metal cooling jacket. The crankcase was aluminium and pistons were initially steel but later versions had aluminium pistons. A high compression version of the engine (Bz IVü) was produced from 1917 onwards and can be recognised by the red bands painted on each cylinder.
General characteristics:
Type: 6-cylinder, water-cooled, inline aircraft piston engine
Bore: 145 mm (5.71 in)
Stroke: 190 mm (7.48 in)
Displacement: 18.83 L (1,148.9 in³)
Length: 1,990 mm (78 in)
Width: 530 mm (20 in)
Height: 1,150 mm (45 in)
Dry weight: 370 kg (820 lb)
Components
Cooling system: Water-cooled
Performance
Power output: 170 kW (230 hp) at 1,400 rpm
Applications:
AEG C.VI
AEG J.I
AGO C.IV
Albatros C.VII
Albatros J.I
Chitty 2 (racing car)
DFW C.V
Dobi-II
Friedrichshafen FF.49
Friedrichshafen G.II
Halberstadt C.V
Junkers J.I
LVG C.VI
Pfalz D.XII
R-planes, the German giants of WWI
