2012 was the year CZ LOKO presented its concept for a new medium power diesel locomotive for shunting services and mainline operations up to 120 km/h. Pre-series locomotive 744 001 made its national debut at the Czech Raildays in June 2012. In September it was presented to the worldwide railway industry on the InnoTrans trade fair in Berlin.
The 744.0 series can be delivered with two different off-the-shelf Caterpillar engines, resulting in power ratings of 1.000 and 1.500 kW respectively. It is possible to equip the locomotive with engines between 700 and 1500 kW if desired. The locomotive is designed for operations in various Central European countries, such as Austria, the Czech Republic, Germany, Hungary, Poland and Slovakia.
In 2015, the Czech manufacturer remarketed its 744.0 locomotive as the EffiShunter concept. The EffiShunter is an updated version of the original 744.0 and is available in both 1435 mm and 1520 mm versions. Next to minor changes in the design and dimensions of the locomotive, the 1435 mm version of the EffiShunter houses a Caterpillar C32 engine to meet the European Stage IIIb emission requirements. The EffiShunter concept's designed interoperability has not changed compared to that of the 744.0.
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Technical Details - 744.0 (2012)
| 744.0 - 1000 kW | 744.0 - 1550 kW | |
| Dimensions | ||
| Total length | 17400 mm | 17400 mm |
| Total height | 4173 mm | 4173 mm |
| Total width | 3060 mm | 3060 mm |
| Axle characteristics | ||
| Wheel diameter | 1100 mm | 1100 mm |
| Axle arrangement | Bo'Bo' | Bo'Bo' |
| Track gauge | 1435 mm | 1435 mm |
| Weight | ||
| Total weight | 72 tonnes | 72 tonnes |
| Axle load | 18 tonnes | 18 tonnes |
| Traction performance | ||
| Top speed | 100 (120) km/h | 100 (120) km/h |
| Starting tractive effort | ? kN | ? kN |
| Maximum tractive effort | 239 kN | 239 kN |
| Propulsion characteristics | ||
| Fuel tank capacity | 6000 L | 6000 L |
| Number of traction motors | 4 | 4 |
| Diesel engine manufacturer | Caterpillar | Caterpillar |
| Diesel engine type | 3508C | 3512C |
| Power rating | 1000 kW | 1500 kW |
| Number of cylinders | 8 | 12 |
| Electrical transmission | AC / AC | AC / AC |
Technical Details - 744.1 - EffiShunter 1000 (2015)
| 1435 mm | 1520 mm | |
| Dimensions | ||
| Total length | 16300 mm | 16300 mm |
| Total height | 4280 mm | 4280 mm |
| Total width | 3060 mm | 3060 mm |
| Axle characteristics | ||
| Wheel diameter | 1100 mm | 1100 mm |
| Axle arrangement | Bo'Bo' | Bo'Bo' |
| Track gauge | 1435 mm | 1520 mm |
| Weight | ||
| Total weight | 80 tonnes | 92 tonnes |
| Axle load | 20 tonnes | 23 tonnes |
| Traction performance | ||
| Top speed | 100 km/h | 100 km/h |
| Starting tractive effort | ? kN | ? kN |
| Maximum tractive effort | 220 kN | 296 kN |
| Propulsion characteristics | ||
| Fuel tank capacity | 4000 L | 4000 L |
| Number of traction motors | 4 | 4 |
| Diesel engine manufacturer | Caterpillar | Caterpillar |
| Diesel engine type | C32 | 3508B |
| Power rating | 895 kW | 970 kW |
| Rated speed | 1800 rpm | 1800 rpm |
| Number of cylinders | 12 | 8 |
| Electrical transmission | AC / AC | AC / AC |
Production List - 744.0 - EffiShunter 1000 (2012) - Prototype
Production List - 744.1 - EffiShunter 1000 (2015)
| Hersteller | Fabriknummer | Baujahr | Fahrzeugtyp | Bauart | Loknummer | |||||
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| CZ LOKO | 16-0793 | 2016 | EffiShunter 1000 | Bo'Bo'-de | Mercitalia S&T | 744 101-7 |
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| CZ LOKO | 17-0863 | 2018 | EffiShunter 1000 | Bo'Bo'-de | Mercitalia S&T | 744 102-5 |
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| CZ LOKO | 17-0864 | 2018 | EffiShunter 1000 | Bo'Bo'-de | Mercitalia S&T | 744 103-3 |
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| CZ LOKO | 17-0865 | 2018 | EffiShunter 1000 | Bo'Bo'-de | Mercitalia S&T | 744 104-1 |
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| CZ LOKO | 17-0866 | 2018 | EffiShunter 1000 | Bo'Bo'-de | Mercitalia S&T | 744 105-8 |
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| CZ LOKO | ? | 2019 | EffiShunter 1000 | Bo'Bo'-de | DP | 744 106-6 |
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| CZ LOKO | ? | 2019 | EffiShunter 1000 | Bo'Bo'-de | DP | 744 107-4 |
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| CZ LOKO | ? | 2019 | EffiShunter 1000 | Bo'Bo'-de | RTC | 744 108-2 |
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| CZ LOKO | ? | 2019 | EffiShunter 1000 | Bo'Bo'-de | RTC | 744 109-0 |
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| CZ LOKO | ? | 2019 | EffiShunter 1000 | Bo'Bo'-de | CD Cargo | 744 110-8 |
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| CZ LOKO | ? | 2019 | EffiShunter 1000 | Bo'Bo'-de | CD Cargo | 744 111-6 |
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