The Hatz 1B20V is a 243 cc, (14.83 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small diesel engine with a vertical shaft, manufactured by Motorenfabrik Hatz GmbH & Co. KG for general-purpose applications.
The Hatz 1B20V engine has a single-cylinder, light-alloy cylinder head, forged crankshaft, valve timing via rocker arm, pushrods, finger-follower, and camshaft. The Hatz 1B20V 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 1B20V is equipped with a 3.0 L (0.79 US. gal. 0.66 Imp. gal.) fuel tank.
This diesel engine produced from 2.2 PS (1.6 kW; 2.1 HP) at 1,500 rpm to 4.8 PS (3.5 kW; 4.7 HP) at 3,600 rpm of horsepower (DIN ISO 1585) and 10.5 N·m (1.1 kg·m, 7.7 ft·lb) at 2,500 rpm of peak torque.
|Engine type||4-stroke, single-cylinder|
|Displacement||243 cm3, (14.83 cu·in)|
From 2.2 PS (1.6 kW; 2.1 HP) at 1,500 rpm
to 4.8 PS (3.5 kW; 4.7 HP) at 3,600 rpm
|Max. torque||10.5 N·m (1.1 kg·m, 7.7 ft·lb) at 2,500 rpm|
|Cooling system||Forced air|
|Lubricating system||Pressurized lubrication|
|Fuel system||Direct injection|
|Fuel tank capacity||3.0 L (0.79 US. gal. 0.66 Imp. gal.)|
|Starting system||Recoil or electric starter (12 V or 24 V )|
|Dimensions (L x W X H)||360 x 399 x 338 mm (14.2 x 15.7 x 13.3 in)|
With recoil starter: 30.0 kg (66.1 lbs)
With electric starter: 34.8 kg (76.7 lbs)
Cylinder Block and Head
Cylinder bore and piston stroke are 69.0 mm (2.72 in) and 65.0 mm (2.56 in), respectively. Compression ratio rating is 22:1.
|Cylinder bore:||69.0 mm (2.72 in)|
|Piston stroke:||65.0 mm (2.56 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:||32.5 mm (1.28 in)|
The API – CF / CH-4, ACEA – B3 / E4 oil with a viscosity of SAE 5W-30, 10W-30 is recommended for the 1B20V, refilling oil capacity is 0.9 L (0.95 US. qt, 0.79 Imp. qt.). The valve clearance is 0.20 mm (0.008 in) for intake valves and 0.20 mm (0.008 in) for exhaust valves.
|Maximum speed:||3,600 rpm rpm|
|Intake valve clearance:||0.20 mm (0.008 in)|
|Exhaust valve clearance:||0.20 mm (0.008 in)|
|Lubrication system:||Pressurized lubrication|
|Oil type:||API: CF/CH-4, strong>ACEA: B3/E4|
|Recommended oil:||SAE 5W-30, 10W-30|
|Oil capacity:||0.9 L (0.95 US. qt, 0.79 Imp. qt.)|