Ferrari trials split wastegate design in Abu Dhabi

Ferrari has trialled a split wastegate design at the rear of its Formula 1 car in free practice for the Abu Dhabi Grand Prix, as it explores new powertrain developments.

Ferrari trials split wastegate design in Abu Dhabi

Having used just a single wastegate throughout 2019, Ferrari now falls in line with the other engine suppliers on the grid by branching the wastegate out into two distinct exits, as seen in Giorgio Piola's photographs. Mercedes, Renault and Honda have all used twin-exit wastegates this year, and Ferrari did so in 2018 in a shotgun-style before opting for a larger-diameter single pipe this year.

The team's usual wastegate looks set to return in future sessions this weekend, as the exhaust retains the metal ring which holds it in place. A conventional wastegate in a turbocharged powertrain is used to keep the turbine within a certain range of operational speeds.

The MGU-H can also regulate the speed at which the turbo operates, but the wastegates are still required to take excess exhaust gases away from the turbocharger to relieve the overall pressure.

Ferrari SF90, rear

Ferrari SF90, rear

Photo by: Giorgio Piola

Read Also:

Part of the rationale behind breaking the wastegates into two is to rid the system of "back pressure", which is classified as any resistance against allowing the exhaust gases to flow freely out of the tailpipe.

Exhaust gases generally move in rotational pulses, and so tailpipes must be designed to ease the forces applied back on the turbocharger by the motion of those pulses.

Furthermore, branching a single tailpipe into two of a smaller diameter helps to accelerate the airflow passing out and also reduce the pressure within the system, according to Bernoulli's equation.

The wastegates are also mounted some way above the main exhaust pipe, suggesting an attempt at firing the excess gases at the underside of the rear wing to increase performance.

Wastegates were separate from the main exhaust outlet ahead of the 2016 season in an attempt to increase the amount of sound from the powertrain.

Read Also:

shares
comments

McLaren's BAT branding to increase significantly in 2020

Abu Dhabi GP: Bottas outpaces Verstappen by 0.5s in FP1

Why Albon won't be "throwing around laptops" to gain a 2023 F1 edge

Why Albon won't be "throwing around laptops" to gain a 2023 F1 edge

Prime
Prime
Formula 1
Williams launch
Alex Kalinauckas

Why Albon won't be "throwing around laptops" to gain a 2023 F1 edge Why Albon won't be "throwing around laptops" to gain a 2023 F1 edge

The pioneering F1 car that preceded Lotus’s terminal decline

The pioneering F1 car that preceded Lotus’s terminal decline

Prime
Prime
Formula 1
GP Racing

Throwback: The 1987 Lotus 99T The pioneering F1 car that preceded Lotus’s terminal decline

How Tyrrell became a racing Rubik’s cube as it faded out of F1

How Tyrrell became a racing Rubik’s cube as it faded out of F1

Prime
Prime
Formula 1
GP Racing

The story of Ken Tyrrell's team How Tyrrell became a racing Rubik’s cube as it faded out of F1

Assessing Hamilton's remarkable decade as a Mercedes F1 driver

Assessing Hamilton's remarkable decade as a Mercedes F1 driver

Prime
Prime
Formula 1
Alex Kalinuackas

Assessing Hamilton's Mercedes stint Assessing Hamilton's remarkable decade as a Mercedes F1 driver

Why new-look Haas is a litmus test for Formula 1’s new era

Why new-look Haas is a litmus test for Formula 1’s new era

Prime
Prime
Formula 1
Jonathan Noble

Why new-look Haas is a litmus test Why new-look Haas is a litmus test for Formula 1’s new era

The Mercedes F1 pressure changes under 10 years of Toto Wolff

The Mercedes F1 pressure changes under 10 years of Toto Wolff

Prime
Prime
Formula 1
Alex Kalinauckas

Assessing Wolff's Mercedes influence The Mercedes F1 pressure changes under 10 years of Toto Wolff

The all-French F1 partnership that Ocon and Gasly hope to emulate

The all-French F1 partnership that Ocon and Gasly hope to emulate

Prime
Prime
Formula 1
GP Racing

The line-up Ocon, Gasly may emulate The all-French F1 partnership that Ocon and Gasly hope to emulate

Who were the fastest drivers in F1 2022?

Who were the fastest drivers in F1 2022?

Prime
Prime
Formula 1
GP Racing

Who were the fastest F1 drivers? Who were the fastest drivers in F1 2022?