PAUL WIL­LIAMS, Head of Pow­er­train and Chas­sis

Popular Mechanics (South Africa) - - Driving -

“Our lat­est en­gine tech­nol­ogy means the dif­fer­ence in car­bon emis­sions and fuel con­sump­tion be­tween our 12-, 10- and 8-cylin­der en­gines has nar­rowed sig­nif­i­cantly com­pared with a few years ago. Our cus­tomers still want big 12-cylin­der en­gines and those will meet the next round of emis­sion reg­u­la­tions.

“I’ve been build­ing diesel pro­to­types for the last eight or nine years. The Ben­tayga as an SUV gave us the right op­por­tu­nity once we got the re­fine­ment up to stan­dard.

Bent­ley’s first diesel en­gine is fit­ted with an elec­tric su­per­charger. It op­er­ates for very brief pe­ri­ods at a time. The power draw is huge (120 amps off a 12 V sys­tem) but the Bentyaga de­buts the 48 V sys­tem.

“The 48 V sys­tem also runs the ac­tive roll bars. This mo­torised mech­a­nism is equipped with a high-pow­ered gear­box in the cen­tre, which en­ables us to put counter-ac­tive forces on to that bar. For off-road­ing it can de-cou­ple, so the wheels can be­have in­de­pen­dently.

“Hav­ing links into the (Volk­swa­gen) fam­ily is an enor­mous ad­van­tage, but we also act inde- pen­dently, tak­ing ex­ist­ing de­signs and mod­i­fy­ing them to suit our needs. This in­cludes en­gines and the group’s scal­able MLB plat­form.”

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