Spanish firm SAPA Transmission’s latest SW 624 continuously variable automatic transmission will be fitted to the Spanish Army’s General Dynamics European Land Systems (GDELS) Santa Barbara Sistemas-MOWAG 8x8 Piranha 5 armoured fighting vehicles (AFV), the company has confirmed to Jane’s .
SAPA Transmission is responsible for developing the vehicle’s power pack, with one such system currently undergoing tests on a prototype/pre-production vehicle. Five vehicles will be delivered for trials by the end of 2018.
The complete hybrid power pack comprises a Scania diesel engine developing 480 kW, SW 624 automatic transmission, and an associated cooling system, which provides an additional 75 kW of electrical power to support the increasing use of electronic equipment on modern AFVs.
The SW 624 transmission contains 24 forward and eight reverse gears. SAPA Transmission claims that this multi-gear concept exhibits a very high ratio spread of 31, with 24 gears divided in equal steps with 16% increments.
According to the company, this arrangement provides a quasi-continuous variable transmission behaviour, which optimises engine operation.
The Spanish Army will procure 300 Piranha 5 vehicles, to be manufactured in Spain under the leadership of SAPA Transmission, INDRA, and GDELS Santa Barbara Sistemas. The Piranha 5 will replace the BMR-600 series of 6x6 armoured personnel carriers (APCs) and variants, with the latter having served more than 30 years with the Spanish Army.
The company’s SG 850 series transmission is also installed in the GDELS Santa Barbara Sistemas Pizarro 2 infantry fighting vehicle (IFV) and variants.
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