Autumnpuma

More Hp For Ferrari

4 posts in this topic

Ferrari introduced a new engine spec in Spain; this was in order to resolve a problem with the pneumatic valve system. This raises two points; why are they allowed to change a frozen engine specification and what are the pneumatic valves?

Since the end of 2006 F1 engine specs have been frozen, this was a move to further reduce the costs for the engine suppliers. It was introduced even after stringent standard engine specifications and limited engines over season were introduced. Since the first homologation of the engines, teams have been allowed to retune the engine for different RPM limits and also to accommodate KERS. Offsetting this has been the increase to the parts covered by the specification freeze.

Teams are however allowed to make changes to the their engines for reliability reasons, this applies both to resolving issues that have ‘blown up’ engines, as well as impending failures. To request a change, teams have to apply to the FIA outlining the reason for the change and the resulting changes. This information is passed around the other engine suppliers, this transparency helps to reduce excessive changes and reassures teams what their rivals might or might not be getting up to.

While the fundamental reason for this dispensation is to aid teams with reliability problems, any ‘reliability’ change could also bring a performance gain. This could be either as a direct result of the ‘reliability’ change i.e. lighter part making more power, or as a secondary result, i.e. new valve seat material allows a different fuel for more power. Clearly any possible advantage will be taken by the manufacturers when making changes to the engine.

Ferrari had an issue with leaking pneumatic valves; this meant the car may not be able to last a full race distance without the system being topped up. Thus Ferrari asked for and gained approval to make alterations to their valve system to resolve the problem.

Pneumatic valves are universal in F1 and have been for decades, first introduced by Renault on their V6 turbo engine, they replicate the effect of valve spring in closing the poppet valves in the cylinder head. Where as a valve spring could do the job, they are more difficult to manufacture to cope with ever higher RPMs. Although F1 engines are now limited to 18,000rpm, these pneumatic valves have worked on engines revving to over 20,000rpm. Metal coiled valve springs, suffer from harmonic and fatigue problems at higher revs. While still resolvable, these issues are simply cured with a switch to a pneumatic valve return system (PVRS). Instead of a valve being closed against the cam by a coil spring sat in a pocket in the head, the pocket is sealed by a cap and the resulting closed cylinder pressurised with nitrogen gas creating an airspirng. Of course the PVRS set up can lose pressure and F1 cars run with small nitrogen cylinder housed in the sidepod to keep the system pressurised. Sometimes when excessive leaking occurs, the car is topped up at a pitstop by a mechanic with a hand held gas cylinder. In Ferraris case their problem was that their system had always ‘leaked’ to some degree, but with a ban on the longer fuel stops, pit stops are now too short for effective repressurising. Thus they applied to have their system altered. It is understood that the Ferrari solution takes some lessons from the Toyota teams’ experience, possibly through the new Ferrari Engine Head Luca Marmorini, who also ran Toyotas F1 engine operation until the end of 2008. A different PVRS set up, with different seals and revised oil formulation to aid sealing, the engine is now believed to be more powerful by some 12 horse power. Quite a gain from a change in this era of frozen specification.

Source: Craig Scarborough

---

I thought this was interesting as it sheds some light onto why, under homologation, engines differ in performance.

Share this post


Link to post
Share on other sites

It is now believed Craig Scarborough doesn´t like Ferrari; some people believe in god and some other in Santa... A bunch of words, and no evidence at all. Some people speak because the air is for free!

Of course a mod in any engine could make it powerful or perform better, but with all the mod data shared with other teams the only guy in the world to raise his voice is Chris...

Share this post


Link to post
Share on other sites

So you're saying he's printed a lie? That's absurd. Craig is a well-respected technical journalist and is printed regularly in at least three technical magazines and countless web-based tech sites. He's also a very respected forum poster (at least he used to post, not sure anymore) on the Autosport forums. Have you ever floated around those forums, Argento? The level of knowledge there makes our little forum look like a kindergarten class.

You're being hyper-sensitive about Ferrari. If you have the ability to dispute anything he's said in the article, do so. Otherwise be prepared to be ignored by me on this issue.

Edited by Autumnpuma

Share this post


Link to post
Share on other sites

timberland pro work boots adidas store north face outlet pandora bracelet charms nike outlet online oakley sunglasses for men adidas yeezy boost nike clearance air max 97 silver bullet pandora longchamp nike sneakersferragamo belt ecco shoes for men michael kors handbags christian louboutin shoes yeezy boost moncler outletmoncler jackets birkenstock sandals fitflop pandora jewelry 70 off clearance pandora jewelry red bottom retro 13timberlands mcm backpack timberland outlet adidas nmd fitflops oakley sunglasses birkenstock outlet fitflops adidas running shoes coach outlet air max 270 nike factory nike outlet store nike air max 97 puma tory burch sale pandora charms pandora harden shoes pandora jewelry adidas sneakers uggs clearance moncler jackets adidas store nike outlet store online shopping michael kors outlet red bottoms retro 12 adidas adidas ultra boost canada goose clothing nike shoes outlet mbt shoes canadian goose jacket ugg slippers retro 12 michael kors handbags superstar shoes cheap oakley sunglasses adidas boost adidas nmd timberland boots pandora charms soccer cleats louboutin shoes jordan sneakers nike vapor max flyknit nike outlet online pandora rings official site jordan retro 11 michael kors handbags coach handbags air max 97 south beach adidas shoes adidas store nike uk ralph lauren polo nike outlet store online shopping pandora bracelet pandora charms yeezy adidas ray ban glasses retro 12 nike outlet store onlineray ban sunglasses pandora jewelry official site air max 95 neon pandora jewelry adidas sneakers nike uk birkenstock outlet stores pandora jewelry official site nike vapor max plus nike outlet store online shopping birkenstock sandalsbirkenstock shoes pandora charms yeezy shoes polo ralph lauren outlet north outlet online michael kors outlet onlinefitflops sale clearance tory burch sandals nike shoes for women christian louboutin outlet tory burch outlet ysl handbags adidas superstar shoes soccer cleats jordan 14 pandora christian louboutin adidas yeezy ray ban eyeglassesadidas yeezy boost bottega veneta handbags puma outlet mcm backpack philipp plein nike vapor max flyknittimberland shoes yeezy sneakers adidas yeezy boost oakley eyeglasses kate spade outlet online michael kors handbags valentino nike clearance coach outlet ultra boost air jordan 10 pandora charms jordan 4 curry 5 pandora jewelry official site pandora jewelry official site nike air max 95 pandora jewelry ugg shoes salvatore ferragamo nike air vapormax flyknit nike uk adidas outlet air max 270 balenciaga sneakers nike sneakers retro 11 canada goose outlettimberland timberland yeezy moncler jackets adidas outlet nike air max birkenstock outlet red bottom shoesbirkenstock shoes nike sneakers timberland boots coach outlet kate spade purses birkenstock sandals fit flops oakley eyeglasses yeezy boost nike outlet store timberland pro work boots birkenstock outlet bottega veneta outlet pandora charms sale clearance nike outlet pandora charms sale clearance ecco shoes for women pandora jewelry official siteretro 11 coach outlet store retro 13 yeezy birkenstock sandals pandora bracelet timberland boots curry 5 michael kors outlet online yeezy oakley sunglasses moncler jackets nike shoes philipp plein cleats cheap nike shoes balenciaga nike soccer cleats pandora charms north face jackets clearance red bottom shoes canada goose sale ecco shoes for women timberland outlet nike outlet store nike factory store adidas yeezy louboutin nike store adidas soccer pandora jewelry jordan 10 air vapor max nike factory nike clearance adidas yeezy boost air jordan 14 jordan shoes adidas yeezy north face coats kate spade sale air max 98 harden shoes puma shoes louboutin shoes ultra boost oakleyfitflops nike nike shoes pandora jewelry official site coach outlet ysl handbags ray-ban sunglasses sale adidas outlet online nike air max 270 nike outlet store nike shoes uggs boots women coach factory outlet pandora outlet jordans sneakers moncler jackets nike outlet online fit flops for women kate spade ecco shoes for men retro 11 coach rayban sunglasses michael kors handbags pandora jewellery timberland outlet birkenstock sandals retro 13 uggs official sitered bottom shoes christian louboutin ray ban eyeglasses adidas nmd r1 jordan retro 11 birkenstock sandals jordan 8timberland yeezy shoes adidas shoes for women uggs official site nmd r1 fitflops pandora jewelry timberland boots for men pandora mbt pandora pandora jewelry timberland boots oakley glasses birkenstocks red bottom coach outlet uggs official site fitflops sale kate spade handbags nike roshe air max 2018 nike factory uggs boots nike air max 2018 adidas yeezy pandora jewelry nike air max 270 adidas shoes nike outlet nike outlet store online adidas canada goose jackets pandora cyber monday deals pandora charms cyber monday north face jackets black friday michael kors black friday pandora jewelry black friday coach handbags black friday pandora jewelry black friday deals michael kors black friday deals canada goose clothing pandora jewelry black friday coach cyber monday coach black friday deals north face black friday coach black friday sale 2018 michael kors cyber monday canada goose jacket michael kors cyber monday ugg slippers coach cyber monday canada goose outlet north face cyber monday 2018.0919W

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now