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Montreal a reality check for Toyota

NEWS STORY
02/06/2008

This weekend's Canadian Grand Prix is the first time the Toyota TF108 has got to grips with the Gilles Villeneuve Circuit. Well, in real life that may be so, but not in the virtual world of simulation at Panasonic Toyota Racing.

Even before a TF108 turns a wheel in anger around Montreal's Ile Notre-Dame, Toyota engineers already have a bank of information to draw on after simulating the car's behaviour around the 4.361km track.

At the team's technical centre in Cologne, Germany, an array of sophisticated simulation techniques are employed to give the drivers a head start when practice begins in Canada, ranging from the wind tunnel, engine test benches, a seven-poster rig and computational fluid dynamics (CFD).

For the Canadian Grand Prix, riding the kerbs is key, and Toyota has spent time in the build up simulating the TF108's behaviour on a seven-post rig (above), specifically set up to replicate the demands of the Montreal track.

A full-size TF108 is placed on a hydraulically-powered rig, which uses data from previous seasons to shake and shudder the car exactly as though it was driving over the bumps and kerbs of the Ile Notre-Dame. This provides important information regarding suspension and damper settings, giving engineers a strong indication of what works and what doesn't.

Chief Engineer Race and Test Dieter Gass says: "This is very important because, unlike other circuits, at Montreal you have the four chicanes and the more you can ride the kerbs in the chicane, the more you can straight line them and the more time you're going to gain. That means if you have a car that handles perfectly over the kerbs you're going to gain a lot of speed and lap time."

That is just one element of the standard pre-race preparation at Toyota; the engine dynamometers, or test benches, are another. An engine test bench allows the RVX-08 engine to be 'driven' on its own, with no TF108 chassis in sight.

By pushing the engine through all the same revs and gear changes as Jarno Trulli and Timo Glock will in Canada, an engine can complete the entire race distance without moving a millimetre. The data from these tests allows engineers to fine-tune engine behaviour to a particular circuit, as well as spotting any areas to improve well before the drivers hit the track.

"Typically, before Canada or any other race, we have in our computer the complete throttle behaviour that can, for example, reproduce Jarno's driving style at that track on the dyno," says Senior General Manager Engine Luca Marmorini. "In this way we can already start to anticipate some potential problems in terms of engine response or engine mapping that the driver and the team might find in Canada."

These preparations are specific to each race but simulation goes on across the board as Toyota strives for the continuous improvement necessary to compete at the front in Formula 1. The fruits of this work eventually make it to the race track, but not before rigorous testing has proved their validity in advance.

Before every new aerodynamic part is fitted to the TF108, it has been thoroughly analysed back in Cologne to ensure it does its job.

The first part of this process sees virtual testing using CFD - computers which simulate air flow over a new part, and the impact it has on the car as a whole. If a part fails this process it is extremely unlikely to be worth pursuing, so this simulation streamlines the development process and ensures only worthwhile projects progress beyond the virtual drawing board.

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