MÁV Class M44

4 ft 8+1⁄2 in)Wheel diameter1,040 mm (40.94 in)Length11,278 mm (37 ft 0 in)Width3,132 mm (10 ft 3 in)Height4440 mmLoco weight62 t (136,700 lb)Fuel capacity1 tPrime moverGanz–Jendrassik XVI Jv 170/240AspirationNaturally aspiratedCylinders16Cylinder size170×240 mmTransmissionElectricLoco brakeKnorrTrain brakesAir

Performance figures
Maximum speed	80 km/h (50 mph)
Power output	441 kW (590 hp)
Tractive effort	182.6 kN (41,050 lbf)

Career
Operators	MÁV, MÁV-HÉV, PKP, BDŽ, HŽ, ŽS
Class	M44 (MÁV); SM40-SM41 (PKP)
Number in class	195 (MÁV), 273 (PKP), 132 (BDŽ),

MÁV Class M44 is a Hungarian shunting engine built from 1954 to 1971, and used by multiple railways, including Hungarian State Railways (MÁV), Polish State Railways (PKP), Bulgarian State Railways (BDŽ), Yugoslav Railways (JŽ), and some industrial railways in the former countries of the Eastern Bloc.

All versions used the Ganz–Jendrassik XVI Jv 170/240 V16 4-stroke naturally aspirated diesel engine producing 600 HP (420 kW).

History

The Hungarian railway system was in a very bad shape after the ending of the war, and modernisation became important for MÁV. Ganz has built 2 generator locomotives for the suburban electrified railways during the war. MÁV needed a heavy shunting locomotive to replace the previously used old and obsolete steam locomotives, with relatively high power and acceleration. Ganz has designed a diesel electric locomotive with the then-biggest series built engine made by them, the Ganz XVI Jv 170/240. The first 2 prototypes were built in 1954, and they got the designation M424 5001 and 5002. After the good results of the tests, mass production had started. Other railways bought from this design, with similar results. After nearly 70 years, the original prototypes are still operational, and the class is still in active service, albeit with decreasing numbers.

References

• SM40/41
• Translated from the Hungarian article.

See also

• Polish locomotives designation

Diesel

Standard gauge	SM01 SM02 SM03 SM04 SM15 SM25 SM30 SP30 SM31 SP32 SM40 ST40 SM41 SM42 SP42 SU42 ST43 ST44 SP45 ST45 SU45 SU46 SP47 SM48 ST48 SU160
Narrow gauge	Ld1 Lyd1 Lyd2 Lxd2

ElectricSteam

Standard gauge*	Ok22 OKl27 OKz32 Ol49 Os24 Pm36 Pt31 Pt47 Pu29 TKh49 TKt48 Tr21 Ty23 Ty37 Ty42 Ty43 Ty45 Ty51 Ty246
Standard gauge**	Od2 Oi1 Oi2 Ok1 OKi1 OKi2 OKl2 OKl12 OKo1 Ol12 Ot1 Pd1 Pd4 Pd5 Pf1 Pf12 Pk1 Pk2 Pm2 Pm3 Pn12 Pt1 Th1 Th3 Th24 Ti1 Ti2 Ti4 Ti11 Ti12 Ti16 Ti17 TKh1 TKh2 TKi1 TKi3 TKp1 TKp11 TKp101 TKt1 TKt2 TKt3 TKw1 TKw2 Tp1 Tp2 Tp3 Tp4 Tp15 Tp102/104 Tr1 Tr5 Tr6 Tr11 Tr12 Tr20 Tr201/203 Tr202 Tw1 Tw12 Ty1 Ty2 Ty3 Ty4 Ty5
Narrow gauge	Px27 Px29 Px38 Px48 Px49 T49 Tw47 Tw53 Tx23 Tx26

Multiple units

Electric	14WE/EN61 19WE 33WE 35WE 36WE EW51 EW52 EW53 EW54 EW55 EN56 EN57 EW58 ED59 EW60 EN62/EN76/EN96 ED70 EN71 ED72 ED73 ED74 EN75/ER75/ED160 EN77 ED78 EN80 EN81 EW90 EW91 EW92 EN94 EN95 EN97 EN100 ED161 ED250
Diesel	222M 810** MR/MRD** SN51 SN52 SN60 SN61 SD80** SN80 SN81 SN82** SN83** SN84** SD85** SA101 SA102 SA103 SA104 SA105 SA106 SA107 SA108 SA109 SA110 SA131 SA132 SA133 SA134 SA135 SA136 SA137 SA138 SA139 VT627**

Metro cars