The German producer has confirmed the open secret that it has chosen to base the engine for the BMW M Hybrid V8 on the powerplant used within the M4 DTM for 2 seasons earlier than a change of laws for 2019.
The most recent announcement on the LMDh programme from BMW reveals that LMDh engine generally known as the P66/three retains the four-litre capability of the normally-aspirated DTM unit and that it now runs direct injection.
It follows the naming of the automobile because the M Hybrid V8 in June with out affirmation of any technical particulars, which accompanied the release of the first photographs of the car that will be raced by the Rahal team in IMSA subsequent season.
BMW additionally evaluated the in-line four-cylinder turbo engine used within the DTM after a change in guidelines for 2019 and the road-based V8 turbocharged engine from the M8 GTE, which raced in each IMSA and the World Endurance Championship.
Ulrich Schulz, head of drivetrain design at BMW M Motorsport, mentioned: “In the course of the analysis part, we additionally took a take a look at the P48 four-cylinder turbo engine from the [2019-spec] BMW M4 DTM and the P63 eight-cylinder turbo engine from the BMW M8 GTE.
“However potential issues with the sturdiness of the P48 and the heavy weight of the P63 have been unfavourable concerns.”
BMW M Hybrid V8, P66/three engine
Photograph by: BMW
Schulz defined the BMW was in a position to make use of expertise from its Method 1 participation in 2000-09 within the growth of the inner combustion element of the LMDh’s powertrain, which is mated to a one-make hybrid system developed by Williams Superior Engineering, Bosch and Xtrac.
“That saved us time and some huge cash and was subsequently environment friendly and sustainable,” he mentioned.
“Effectivity is a crucial issue for this mission, as now we have a really quick time period out there between getting began and the primary racing look on the Daytona 24 Hours in January 2023.
“Changing the normally-aspirated P66/1 engine right into a bi-turbo after which working with the electrical drivetrain colleagues to show it right into a hybrid drive system was very advanced.”
The brand new engine has already been fired up within the M Hybrid V8 developed along with Dallara in Italy.
The automobile will start testing on the Varano circuit near Dallara’s headquarters in July.
The preliminary part of the check programme for the M Hybrid V8 is known to be scheduled solely for Europe.
The main target of the BMW LMDh programme will initially be on the IMSA sequence in North American with two manufacturing unit automobiles from Rahal, however the German marque has already opened the door on a potential WEC programme in 2024.