Development/Description
The Renk HSWL 354 is a hydromechanical power shift, reversing and steering transmission with four forward and two reverse gears and is installed in the Krauss-Maffei Leopard 2, Leopard 2 driver training vehicle and MaK Armoured Recovery Vehicle 3.
Operation is fully and semi-automatic and the transmission can be mounted to the engine directly or via a connecting component. Mechanical brakes are built on to the output shafts which are transverse to the input.
Propulsion drive is via a torque converter with lock up clutch, shifting and reversing gear to be shifted under load with planetary gear sets, multidisc brakes and clutches.
Steering drive is infinitely variable by a hydrostatic-hydrodynamic superimposed steering system.
The transmission brake is a combined hydrodynamic-mechanical brake system as service brake, without parking and auxiliary brakes.
The central oil supply consists of a built-in reservoir, pumps, filters and valves. A connection for the oil heat exchanger is provided.
Controls consist of an electric remote control for gearshifting and reversing; mechanical actuation of steering, service brake and emergency drive second gear forward and reverse when the current fails. Power take-off is from the two cooling fans.
Options for the Renk HSWL 354 transmission include connecting cable between gear selector, electronic control unit, transmission and vehicle, output gear-type couplings, final drives, sprocket drums and external testing device.
Status
Production. By mid-1999 well over 3,000 of these transmissions had been completed. The Leopard 2 MBT is used by Austria, Denmark, Germany, Netherlands, Spain, Sweden and Switzerland.
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Specifications |
|
Property |
Value |
| Engine power output (h.p.) |
1200 |
| Engine power output (h.p.) |
1500 |
| Number of reverse gears |
4 |
| Number of forward gears |
4 |
| Length (mm) |
1040 |
| Width (mm) |
1720 |
| Height (mm) |
780 |
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