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Nissan working on something radical for Le Mans

With Porsche joining Audi and Toyota at the front of the LMP1 grid at Le Mans next year, Nissan is the next to be throwing its hat (and considerable R&D budget) into the proverbial ring. But only if it's allowed to do something radically different, according to the latest report in Car magazine.
Just what that means remains to be seen, but Nissan is reportedly in active discussions with the ACO (the body that governs the race) to see how far it can stretch the regulations. The ACO has taken an intriguingly different approach to equalizing performance, mandating the maximum amount of energy that can be used per lap instead of telling teams what kind of engines they can use. That's how Porsche is entering with a four-cylinder engine, Toyota with a V8 and Audi with a diesel six. But when it comes to the shape of the car itself, the rules are considerably more restrictive.
Unfortunately the rules would prohibit Nissan fielding the ZEOD RC (with its narrow front track) in the LMP1 class, relegating it instead to the Garage 56 slot for experimental racers (which the DeltaWing filled before). And the realities of endurance racing would effectively prohibit anyone from fielding an all-electric racer. Within those confines, though, Nissan is eager to find enough wiggle room to make something both visually and technically different from other LMPs. And if the ACO won't let it do so at Le Mans, it could turn to another race or series (like the Nürburgring 24) that would.

This tiny 1.5L engine from Nissan makes 400 horsepower

Back in 2012, Ford packed its tiny 1.0-liter EcoBoost three-cylinder in a carry-on suitcase, destined for use in the Fiesta here in the US. In June, Nissan will pack its tiny new three-cylinder engine in a 24 Hours of Le Mans racecar. Nissan's don't-call-me-DeltaWing ZEOD RC racecar will still be able to tackle a single lap under full electric power, but the rest of the time it will be powered by the new 1.5-liter turbocharged three-cylinder engine.
Holding the lightweight engine (at right) is Nismo president Shoichi Miyatani, and he's likely smiling because that 40-kilogram (88-pound) engine packs quite a punch with 400 horsepower and 280 pound-feet of torque. Nissan would like to take a moment to point out this engine's power-to-weight is better than the engines currently used in Formula One racecars. Scroll down for more information on this new race engine, which we'll see in action at Le Mans in June.

DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.