Benz Bz.II

The Benz Bz.II (manufacturer's designation Benz Type FD) was a six-cylinder, water-cooled, inline engine developed in Germany for use in aircraft in 1913.^[1] With a displacement of 10.15 L (619.4 cu in) it developed about 75–82 kW (100–110 hp).^[2][3] It had cast-iron cylinders with sheet metal cooling jackets welded to them. The two overhead valves per cylinder were operated via pushrods and rocker arms by a single camshaft embedded in the engine block on the right-hand side.^[3]

Bz.II
Type	6-cyl. water-cooled in-line piston engine
National origin	Germany
Manufacturer	Benz & Cie
First run	1913

Applications

• Albatros W.5
• Hansa-Brandenburg B.I

Specifications

Data from Angle^[3]

General characteristics

• Type: 6-cyl. water-cooled in-line piston engine
• Bore: 116 mm (4.57 in)
• Stroke: 160 mm (6.30 in)
• Displacement: 10.15 L (619.4 cu in)
• Dry weight: c. 193 kg (425 lb)

Components

• Valvetrain: One camshaft in the engine block, driving one inlet and one exhaust valve per cylinder via pushrods and rocker arms (overhead valve).
• Cooling system: Water-cooled

Performance

• Power output: 82 kW (110 hp) at 1,300 rpm