Hatz 1B40

Hatz 1B40The Hatz 1B40 is a 0.46 L (462 cc, 28.19 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small diesel engine with a horizontal shaft, manufactured by Motorenfabrik Hatz GmbH & Co. KG for general-purpose applications.

The Hatz 1B40 engine has a single-cylinder, direct injection combustion system, light-alloy cylinder head, forged crankshaft, valve timing via rocker arm, pushrods, finger-follower, and camshaft. The Hatz 1B40 engine can be equipped with a recoil or electric starter (12V or 24V) and alternator (14V – 14A at 3,000 rpm; 7A at 1,500 rpm or 28V – 7A at 3,000 rpm or 4A at 1,500 rpm). The engine used pressurized lubrication with a fine filter in the main flow. The 1B40 is equipped with a 5.0 L (1.32 US. gal. 1.1 Imp. gal.) fuel tank.

This diesel engine produced from 5.2 PS (3.8 kW; 5.1 HP) at 1,500 rpm to 10.2 PS (7.5 kW; 10.1 HP) at 3,600 rpm of horsepower (ISO 1585) and 24.9 N·m (2.5 kg·m, 18.4 ft·lb) at 2,300 rpm of peak torque.

General information

Engine Specifications
Engine model 1B40
Engine type 4-stroke, single-cylinder
Displacement 462 cm3, (28.19 cu·in)
Max. horsepower From 5.2 PS (3.8 kW; 5.1 HP) at 1,500 rpm
to 10.2 PS (7.5 kW; 10.1 HP) at 3,600 rpm
Max. torque 24.9 N·m (2.5 kg·m, 18.4 ft·lb) at 2,300 rpm
Cooling system Forced air
Lubricating system Pressurized lubrication
Fuel system Direct injection
Fuel tank capacity 5.0 L (1.32 US. gal. 1.1 Imp. gal.)
Fuel used Diesel
Starting system Recoil or electric starter (12 V or 24 V )
Charging system Alternator
Dimensions (L x W X H) 348 x 392 x 480 mm (13.7 x 15.4 x 18.9 in)
Dry weight With recoil starter: 48.0 kg (105.8 lbs)
With electric starter: 53.3 kg (115.7 lbs)

Cylinder Block and Head

Cylinder bore and piston stroke are 88.0 mm (3.46 in) and 76.0 mm (2.99 in), respectively. Compression ratio rating is 20.5:1.

Cylinder block
Compression ratio: 20.5:1
Cylinder bore: 88.0 mm (3.46 in)
Piston stroke: 76.0 mm (2.99 in)
Ring end gap (Top): 0.250-0.450 mm (0.0098-0.0177 in)
Ring end gap (Second): 0.250-0.450 mm (0.0098-0.0177 in)
Ring end gap (Oil): 0.250-0.450 mm (0.0098-0.0177 in)
Crankshaft center distance: 38 mm (1.495 in)
Cylinder head
Valves: 2

Service Data

The API – CF / CH-4, ACEA – B3 / E4 oil for engines without diesel oxidation catalyst (DOC) and a viscosity of SAE 5W-30, 10W-30 is recommended for the 1B40, refilling oil capacity is 1.5 L (1.59 US. qt, 1.32 Imp. qt.). For engines with a diesel oxidation catalyst (DOC) use ACEA E6. The valve clearance is 0.10 mm (0.004 in) for intake valves and 0.10 mm (0.004 in) for exhaust valves.

Engine
Maximum speed: 3,600 rpm rpm
Valve clearance
Intake valve clearance: 0.10 mm (0.004 in)
Exhaust valve clearance: 0.10 mm (0.004 in)
Oil system
Lubrication system: Pressurized lubrication
Oil type: With diesel oxidation catalyst (DOC): ACEA E6
Without diesel oxidation catalyst (DOC): CF/CH-4, ACEA: B3/E4
Recommended oil: SAE 5W-30, 10W-30
Oil capacity: 1.5 L (1.59 US. qt, 1.32 Imp. qt.)
Fuel system
Type: Direct injection

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