Renault Sport F1 Technical feature for Korea

Renault Sport F1 Technical feature for Korea

11.10.2012: The torque map is probably the single most important reference map used in Formula 1 engine management




The torque map is probably the single most important reference map used in Formula 1 engine management.



It is the fingerprint of an engine and of critical importance for engine engineers to help optimise the on track engine performance.


“In its simplest form, the engine torque map is a theoretical model of the engine. It represents the torque output of the engine for a given engine throttle position and engine speed. In this respect it appears outwardly similar to a driver torque pedal map, the only change being the look-up against engine throttle position instead of the driver’s pedal.


However, in reality, the differences are far more complex and wide reaching. From this map, you know for any given speed or throttle position that you should produce a certain amount of engine torque,” says Renault Sport F1 engine engineer David Lamb.


“We then use that reference map to ensure the engine is behaving as it should out on the circuit. We measure the actual engine torque with an on-car sensor, and when you overlay this with the value predicted by the torque map, you shouldn’t notice any large differences. If you have a hesitation or a drivability issue, you will see it clearly because the measured torque will not match the reference torque."


The torque map doesn’t change much over the course of a weekend, or between races. “Under the new technical directive, issued between the German and Hungarian Grands Prix, you can’t really change the maps that much over a weekend or between races. It’s like a fingerprint of the engine.


There will be subtle differences between the teams due their respective air boxes and exhausts, which will slightly change the form of the map. Prior to this directive, we would change the torque map freely to suit the climatic conditions. For example, the engines will produce nearly 10% less torque at Sao Paulo than they will this weekend in Korea due to Sao Paulo’s high altitude.


By changing the torque map to the prevailing conditions the engine response will feel the same to the driver across the season. Nowadays we have to request this torque map change from the FIA, and fully justify our reasoning.”


As well as ensuring the engine behaves as it should, the map is also used to improve the driveability of the car for the driver. “When the driver lifts off the pedal the engine can be either fired in four cylinders or fully cut, depending on the level of overrun support he requires,” explains David.


“When the driver goes back on the pedal from full ignition cut, you need to inject more fuel than usual to ‘wet’ the engine. Inject too little or too much and you will have a torque deficit from target, which can cause a hesitation and a loss of lap time.


The initial torque demand will generally be met with only four cylinders, as you’d rather save a bit of fuel and have four cylinders firing strongly using a more open throttle than have eight coming into life rather weakly with a relatively closed throttle.


"When the torque demand exceeds that which can be met with just four cylinders, the remaining cylinders need to be fired. These will also require ‘wetting’. At this point you also have to close the throttles at a rate which coincides with the final four coming back into life – this is the tricky bit!


Get it right and the driver should feel nothing across the transition, just a change in engine pitch. In all cases, the torque map is used in conjunction with other settings to govern both the fuelling requirements and throttle position."


The engine torque map is used for a multitude of other processes, such as the pit limiter, rev limiter and downshift control. “The engine torque map is without doubt one of the most important calibrations in the SECU. It really is the reference point. When the driver lifts of the pedal, it’s the engine torque map that decides by how much we close the throttles. When he goes back on power, it’s the engine torque map that stipulates to what point they open. It all works off that map.”
 


Renault Sport F1 - also photo

Permanent-URL: http://www.automobilsport.com/korean-gp-renault-sport-f1-technical-feature-korea---104049.html

11.10.2012 / MaP

More News

Red Bull Racing F1 drivers Korea preview
10.10.2012
KOREAN GP 2012  Sebastian Vettel: “In principle, the track is made up of two parts: a permanent race track and the end, which is more like a street circuit although we’re not in the city. more >>
Sahara Force India F1 Korea preview
10.10.2012
2012 Korean Grand Prix Preview Sahara Force India looks forward to the Korean Grand Prix.  Korean GP: Vijay’s VisionDr Mallya reflects on another points finish more >>
HRT F1 Team Korea preview
10.10.2012
Korean Grand Prix Preview12th-14th OctoberKorea International Circuit – 55 laps – 5.615 kmMokpo, Tuesday the 9th of October 2012The Formula 1 World Championship continues in the more >>
MERCEDES AMG PETRONAS Korea preview
10.10.2012
2012 KOREAN GRAND PRIX YEONGAM  11-14 OCTOBERFormula One moves from Japan to Korea this week to complete the first of the three sets of double-header races scheduled before the end of the 2012 se more >>
Vodafone McLaren Mercedes F1 Korea preview
08.10.2012
2012 Korean Grand Prix previewKorean International Circuit facts & statsThe Korean International Circuit provides the teams with a fascinating technical challenge. The first half of the 18-corner r more >>
Caterham F1 Team Korea preview
08.10.2012
Korean Grand  preview 2012 GeneralRace Laps: 55Straight line speed is importantTrack is very dusty with low grip in FP1 which increases front tyre grainingThe pit lane i more >>
Sauber F1 Team Korea preview
08.10.2012
Korean Grand Prix16th of 20 Rounds of the FIA Formula One World Championship, 12.-14.10.2012  After a breathtaking Japanese Grand Prix with Kamui Kobayashi clinching his first podium in Formula One, the Sauber F1 Team wants to build on more >>
Tought challenge for Pirelli P Zero Red supersoft in Korea
08.10.2012
The Korean Grand Prix from a tyre point of view:  Mokpo,12-14 October 2012What’s the story?The Yeongam circuit takes in a very wide variety of speeds and corners, with Pirelli bringing the P Zero Yellow soft and P Zero more >>
F1 Gangnam Style Global Phenomenon PSY Appointed Ambassador for Korea
28.09.2012
F1 Gangnam Style Global Phenomenon PSY Appointed Ambassador for Korea  With his global hit Gangnam Style recording almost 300 million hits on YouTube, Korean superstar recording artist PSY has been annou more >>
Vettel wins his first race with Pirelli as a two-time Champion
16.10.2011
Newly-crowned world champion Sebastian Vettel has won his 10th grand prix of the season, after claiming the lead on the opening lap from his grid position of second place and using the correct pit stop strategy to maintain his advantage. He now has the chance to equal Michael Schuma more >>
Korea Race results
16.10.2011
2011 FORMULA 1 KOREAN GRAND PRIX1     1     Sebastian Vettel     RBR-Renault     55     1:38:01.994     2     252     3     Lewis Hamilton     McLaren-Mercedes     55     more >>
Korea Provisional race results
24.10.2010
2010 FORMULA 1 KOREAN GRAND PRIX1     8     Fernando Alonso     Ferrari     55     Winner     3     252     2     Lewis Hamilton     McLaren-Mercedes     55     +14.9 sec more >>
Korea Qualifying results
23.10.2010
2010 FORMULA 1 KOREAN GRAND PRIX1     5     Sebastian Vettel     RBR-Renault     1:37.123    1:36.074    1:35.585     192     6     Mark Webber     RBR-Renault     1:37.373    more >>
Korea International Circuit Breaks Cover with ‘Circuit Run 2010’
10.09.2010
The Republic of Korea got its first taste of Formula 1 magic this weekend as Karun Chandhok took the Red Bull Racing show car round the brand new Korea International Circuit (KIC) in Yeongam, Jeollanam-do as part of the track’s inaugural ‘Circuit Run 2010’ event.The country’s first ever international-standard motor racing facility is set to h more >>
Korea International Circuit Marks 50-Day Countdown with ‘Circuit Run’
31.08.2010
  Korea Auto Valley Operation (KAVO), promoter of the upcoming 2010 FORMULA 1 KOREAN GRAND PRIX, today announced the Korea International Circuit (KIC) will stage its inaugural event on September 4th and 5th as finishes touches are put to the country’s firs more >>
Korea International Circuit Emblem Blends Harmony and Speed
05.08.2010
  The Korea International Circuit (KIC), currently nearing completion and set to host the FORMULA 1 KOREAN GRAND PRIX from October 22 to 24, has unveiled its official emblem – an eloquent combination of national tradition and high-octane excitement.The de more >>
Whiting Completes First Inspection of Korea International Circuit
22.07.2010
Korea International CircuitWith construction of the Korea International Circuit (KIC) on schedule for its August completion, the Korea Auto Valley Operation (KAVO) welcomed FIA Formula One Race Director and Safety Delegate Charlie Whiting for a site inspection on July 15, 2010.  Whiting’s visit comes ahead of the inaugural 2010 FORMULA 1 KOREAN GRAND PRIX more >>
Korea International Circuit On Track for Summer Completion
16.06.2010
Construction of the Korea International Circuit, set to host the 2010 FORMULA 1 KOREAN GRAND PRIX from October 22-24, is on schedule for completion this summer.  The final phase of the development, surfacing of the track, is set for July, and currently 80% of the total construction is complete.The 2010 FORMULA 1 KOREAN GRAND PRIX is the latest addition to a string of major, int more >>

Kategorien

2001-2022 automobilsport.com full copyright