Cars built to the LMDh ruleset that replaces IMSA's Daytona Prototype international class next year will be eligible to race in the WEC’s Hypercar class against bespoke Le Mans Hypercars .
Speaking to Motorsport.com, BMW’s LMDh project leader Maurizio Leschiutta shares the workings of the rear-axle-mounted kit.Williams Advanced Engineering supplies the battery, which can provide up to 50kW of continuous power and has a regen capacity of 170kW.
It may have been specially developed for the LMDh class, but the ’box uses Xtrac’s P1254 integrated valve actuator gearchange system, which Leschiutta says is “a fairly conventional and known technology”. The British company has previously collaborated with BMW on its DTM title-winning M4 GT3.Electric Motor
The MGU drives through a gear train homologated for each engine and will perform the same regardless of engine type. To Leschiutta, this baked-in parity is “a key attraction of a spec system for this category”.Photo by: BMWThe uniformity of the hybrid system means all LMDh manufacturers start from the same point on packaging, but their cooling requirements will differ depending on styling priorities.
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