Steyr WD 113
| Steyr Daimler Puch | |
|---|---|
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| WD 113 | |
| Production period: | 1949-1975 |
| Manufacturer: | Steyr Daimler Puch |
| Working principle: | diesel |
| Motor design: | Standing single cylinder engine |
| Valve control: | OHV valve control |
| Displacement: | 1,330 cm 3 |
| Mixture preparation: | Pre-chamber injection |
| Engine charging: | no |
| Power: | 11-12 kW |
| Max. Torque: | 72.57 Nm |
| Dimensions: | 540 kg |
| Previous model: | none |
| Successor: | none |
The Steyr WD 113 is an upright single-cylinder diesel engine by Steyr Daimler Puch , which was built from 1949 to 1975. The engine is designed both as a stationary engine and for use as a built-in engine, for example in boats and as a tractor engine.
technology
The WD 113 is a vertical four-stroke single-cylinder diesel engine with water cooling, pressure circulation lubrication and pre-chamber injection . Its displacement is 1,330 cm 3 . The displacement results from a cylinder bore of 110 mm and a piston stroke of 140 mm. The housing is made of gray cast iron , the cylinder has a wet cylinder liner that is surrounded by the cooling water . The piston with four piston rings and two oil control rings is made of light metal. The piston pin is secured against sideways movement with circlips. The connecting rod is forged and split, the bearing shells can be replaced. For maintenance, connecting rods and pistons can be removed from the engine housing from above after dismantling the cylinder head. The crankshaft is on roller bearings. It drives a camshaft located on the side of the crankcase via spur gears. The camshaft operates the two overhead valves in the cylinder head via tappets , push rods and rocker arms . Via roller tappets, the camshaft also actuates the injection pump, which is located vertically in the engine housing and which is connected to the injection nozzle by an injection line, which is located in the cylinder head at a 45 ° angle. It injects into an antechamber .
The intake air is cleaned by an oil bath air filter with a cyclone prefilter and sucked into the combustion chamber through the piston stroke. An overpressure tube cooler, which is cooled by a fan, serves as the cooler. The fan and water pump are driven by a V-belt from the crankshaft. The cooler is therefore designed as an overpressure cooler so that the cooling water does not start to boil when the external pressure is reduced, for example at mountain heights. In winter, the cooler can be closed with a blind so that the cooling water can heat up faster. The engine is lubricated with pressure circulation lubrication, which is maintained by a gear oil pump. The lubrication system also serves to passively cool the motor. The oil is pressed from the oil pan through an oil strainer and then through a gap filter, from where it flows partly through the crankcase and partly through an oil line to the oil pressure indicator. The oil also reaches the cylinder head through the hollow push rods, where it lubricates the rocker arms.
Before starting the engine, the prechamber is preheated with a glow plug. A push button is attached to the injection pump, the actuation of which activates a starting aid mechanism so that the injection pump delivers more fuel. Furthermore, the valve clearance can be changed with a decompression device, so that the valves no longer close completely and the resistance when starting the engine is reduced. The engine can either be turned on with a hand crank or started with an electric starter. Starter engines also have an alternator powered by the same V-belt as the water pump.
Technical specifications
| Parameters | WD 113a |
|---|---|
| Working principle | Four-stroke diesel engine |
| cooling | Water circulation cooling |
| Operating temperature of the cooling water | 70-90 ° C |
| lubrication | Pressure circulation lubrication |
| Minimal oil pressure | 0.98 bar |
| Valve control | OHV valve control |
| Minimal valve clearance | 0.2 mm |
| Injection pump | Friedmann & Maier P 11 B7-2.14 |
| Start of funding | 18 ° –21 ° before TDC |
| Bore × stroke | 110 mm × 140 mm |
| Displacement | 1,330 cm 3 |
| Compression ratio | 21: 1 |
| Rated speed | 1,500 min -1 |
| Specific fuel consumption | 258 g / kWh |
Performance chart
It must be noted that the manufacturer's performance data were not measured under DIN 70020 conditions, the fan and the alternator were dismantled for the performance specification. In fact, the power of the motor measured according to DIN-70020 is less than 11 kW (15 HP). The engine is characterized by an almost constant torque in the entire speed range, which means an almost linear increase in power with increasing speed.
At 1,013 mbar air pressure, 20 ° C, without fan, without alternator
source
Steyr diesel tractor single cylinder export model type T84 - description - operation - care . 2nd edition, Steyr, March 1957.
