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Nissan: Q&A with Ben Bowlby on a 2015 Nissan GT-R LM NISMO

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YOKOHAMA, Japan – The Nissan GT-R LM NISMO is a ultimate Nissan GT-R, a purest countenance of creation that excites. Competing in LM P1, a premier category of universe sports automobile racing, Nissan’s Le Mans automobile is like no other automobile before it. 

A truly tellurian effort, a GT-R has been combined by a group of delicately comparison experts in Japan, a U.S. and Europe. Unlike other LM P1 cars, a GT-R’s V6 3.0-liter twin turbo gasoline engine sits in a front of a front-wheel-drive car, while a hybrid appetite is harvested from a front driveline to enlarge acceleration.

The male best placed to report Nissan’s innovative LM P1 automobile is Ben Bowlby, Nissan’s LM P1 Team Principal and Technical Director.



Q1: Can we explain a how a opposite appetite sources work on a GT-R?

Bowlby: We have a unequivocally complicated yet required V6 3.0-liter twin turbo gasoline engine. This is a unequivocally fit engine so it produces a vast volume of appetite regulating a allotted fuel upsurge limit. The fuel upsurge extent is one of a new regulations during Le Mans. We’re not singular by a engine ability or a boost vigour or a RPM of a engine; we’re singular by how many grams of fuel per second we can burn. So a some-more fit we make a engine, a some-more appetite we have since we are still blazing a same volume of fuel possibly we are fit or inefficient. So if we can make a unequivocally fit engine, we get a lot of power. We are blazing a smaller volume of fuel, around 30 percent reduction than was used by a gasoline engine during Le Mans in 2013, for example.

So we have a gasoline engine well producing a certain volume of power, and afterwards in further to that we are regulating a kinetic appetite liberation complement (ERS).  The automobile is a mass travelling during velocity, and as we delayed it down for a arriving dilemma we collect that kinetic energy.

We can afterwards muster that stored appetite to accelerate a automobile out of a corner, and since a appetite liberation complement can redeem a stored appetite unequivocally quickly, it creates it unequivocally powerful. Energy divided by a speed we redeem that appetite equals power. Think about a hang of dynamite. That’s indeed utterly a tiny volume of energy, yet it is expelled in a spilt second so it creates a unequivocally large bang. The same volume of appetite expelled over a day would frequency even conduct to appetite a light bulb. So it’s all about how quick we redeem a energy. We wish to redeem a appetite unequivocally quick to get a automobile behind adult to speed unequivocally quick since it’s good to spend lots of time during high speed. The pivotal is to store a appetite and afterwards redeem it unequivocally quickly, and that’s what creates a complement unequivocally rival – providing us with a good volume of appetite from a ERS, that we can supplement to a inner explosion engine’s pushing power.

Q2: Is a GT-R a front-wheel-drive car?

Bowlby: The Nissan GT-R LM NISMO is in automotive-speak a front-engined, front-wheel-drive car. The inner explosion engine drives a front wheels, and a appetite liberation complement harvests appetite from a front wheels. We’ve used a comparatively low-powered inner explosion engine to expostulate a front wheels, and afterwards we supplement appetite from a ERS to enlarge acceleration.



Q3: If a GT-R has all this power, will it be faster than a LM P1 cars from other manufacturers?

Bowlby: The LM P1 regulations for manufacturers have 4 hybrid powertrain options, tangible by how many hybrid appetite is expelled from a ERS per path of Le Mans (the Le Mans lane is used as a baseline circuit). You can go in a 2 megajoule category where we can muster adult to 2MJ of appetite during one path of Le Mans and also use utterly a lot of fuel. You can go in a 4MJ category and get a tiny reduction fuel, a 6MJ category with reduction still, and afterwards there’s a 8MJ category where we get a slightest fuel of all yet a many recovered appetite for deployment and there’s no extent on how absolute a complement is – only how many appetite is used, so we can possibly have an awful lot of appetite for a unequivocally brief time or a tiny volume of appetite for a unequivocally prolonged time.

The fuel appetite we have, that again can be totalled in megajoules, gets cut in suit to a volume of megajoules we get from your ERS. The approach it is worked out by a ruling physique – a FIA and a ACO – is that if we select to redeem some-more appetite and muster that, we indeed finish adult with some-more sum energy, even yet your fuel appetite has been cut slightly.  The some-more megajoules we have, a faster we go. Each megajoule is value an volume of time per lap, so if we are an 8MJ automobile compared to a 2MJ car, we should be faster over a march of a lap.

There are however some unequivocally large challenges, one of that is that we have to get a automobile down to a smallest weight since each 10-12 kilos is about half a second a path around Le Mans. So if we have some-more weight in a car, that slows we down flattering significantly. The plea is to package a big, absolute appetite liberation complement but going over a weight limit, and that is unequivocally tough to do. We’re going to be unequivocally challenged to make a weight aim of 880 kilos for 2015 when half of a weight of a automobile is a powertrain – engine, ERS and a driveline – so that’s a unequivocally large challenge.”

Q4: What about a tires? The rears demeanour narrower than a front tires.

Bowlby: The front tires on a Nissan GT-R LM NISMO are bigger than a back tires: 14-inch far-reaching front vs. 9-inch rear. This is due to a approach that mass is distributed in a car. We have changed a weight disposition forwards to give us traction for a front-engined, front-wheel drive. We’ve also changed a aero forwards, so we’ve changed a ability of a tires brazen to compare a weight distribution. So a aero core of pressure, a mass core of sobriety and a tire ability are all in harmony; that means we have bigger tires during a front than a rear.

Q5: Why doesn’t a Nissan GT-R LM NISMO demeanour like a other manufacturers’ LM P1 cars?

Bowlby: The regulations have authorised us a leisure to emanate a significantly opposite looking car. Nissan are confidant challengers who are prepared to innovate in sequence to get a high opening outcome, so we’ve incited a whole judgment of a required LM P1 automobile of 2014 on a head. The outcome is that a automobile looks different, as a cockpit has been changed significantly rearwards to accommodate a engine during a front of a car.


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Paul Ryan
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Lindsay Morle
Global Motorsport Communications
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