EXPLAINED

MAZDA G-VECTORING CONTROL

DANIEL GARDNER

TRICKY TECH IN SIMPLE TERMS

MAZDA G-VECTORING CONTROL

What is it?

Mazda’s interpretation of torque vectoring is a pure software-based function, albeit with very real physical effects, so given a box full of tools and a Mazda 3, you won’t find the G-Vectoring widget, no matter how many parts you remove. GVC is an advanced program fed into the vehicle’s various electronic systems including engine management and ESC controllers. Mazda’s approach does not rely on individual wheel braking to ‘vector’ torque, as do many other manufacturers’ systems, instead aiming for a more subtle and efficient method. tation re-hysical ring m ic ment ot l e, nufacturers’ e .

Why does it matter?

According to its maker, GVC is as much about comfort as it is about dynamics. Not only do occupants feel less of the effects of changes in direction for a more relaxing ride, but more precise steering allows easier positioning of the vehicle, which benefits driving enjoyment and performance characteristics. The system is rapidly proliferating the Mazda range and will soon be rolled out to all SkyActiv models. mfort nly ffects e e nt ut

How does it work?

Each time the driver turns the steering wheel (even a small amount) the GVC momentarily reduces the torque output of the engine by rapidly altering the amount of injected fuel. The slight power reduction causes an imperceptible deceleration of the vehicle (usually at or below 0.01g) which loads the outside wheel with an extra 5kg of weight.

These may all sound like insignificant figures, but Mazda says the effect is sufficient to improve the turn-in of the loaded wheel, while not enough to be consciously noticed by occupants including the driver.

The result is more effective steering with fewer corrections to maintain a continuous course, particularly on slippery surfaces.

Slow burn

Mazda incubated the G-Vectoring principle for engine enough azda eight years until the latest SkyActiv gine technology allowed a fast ough fuel-injection response enough ough fuel-injection response for the idea to take off.

The upgraded the was facelift e first vehicle to be graded with GVC was e Mazda 3 when it as treated to a mild elift earlier this year.