Walter M601
Walter M601 Engine
Source: Zenith Aircraft Company

The WALTER M601 is a two-shaft turboprop engine of reverse flow layout. The engine features two basic parts: the gas generator and power section. The gas generator consists of two stage axial and one stage centrifugal compressor, annular combustor and one stage axial turbine. An accessory gearbox with instruments necessary for engine operation and power control is situated on the rear part of the compressor air intake casing. An oil tank is an integral part of the accessory gearbox. The power section is mounted on the front part of the gas generator. This section consists of one stage axial turbine, exhaust system and two stage reduction gearbox with a torquemeter and propeller shaft. The propeller governor is situated on the reduction gearbox and provides the control of the hydraulic actuated propeller including the reverse thrust angle adjustment.

The engine is equipped with a system of electronic limiters which protects the engine against overload. The engine is modified for installation of automatic feathering system.


M601 models basic technical data

TYPE/MODEL  M601D  M601E M601F M601T  M601Z 
Take - off rating shp/kW
724 / 540 751 / 560 777 / 580 751 / 560 512 / 382
Gas generator speed rpm  36 806 36 146 36 146  36 146 35 010
Propeller speed rpm 2 080 2 080 2 080 2 080 1 900
Interturbine temperature C  710 710  710 710  645
E.S.F.C. lb/h/ehp
0.648 0.650 0.633 0.650 0.780
g/h/kW
394 395 385 395 475
Max. continuous rating  shp / kW
657 / 490 657 / 490 670 / 500 657 / 490 328 / 245
Gas generator speed rpm  36 293 35 377 35 377 35 377  33 177
Propeller speed rpm  1800 - 2100 1800 - 1900 1 800 - 1 900 1 800 - 1 900  1 800
Interturbine temperature C  690 680 675  680 585
E.S.F.C.  lb/h/ehp 
0.666 0.674 0.666 0.674  0.948
g/h/kW
405  410 405 410 577
Max. contingency rating shp/kW
751 / 560 798 / 595 - - -
Max. reverse rating shp/kW
435 / 325  452 /337 452 / 337 452 / 337 no
Water injection  yes yes yes optional no
Weight lb / kg 
425.5 / 193 445 / 200 445 / 202 445 / 202 434 / 197
Dimensions mm
650/590/1675 650/590/1675  650/590/1675 650/590/1675 635/590/1675
Walter M601 Engine
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Text by Norm Goyer
Photos by Bill Fedorko

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