Sunday, September 28, 2008

Volt plug-in hybrid due on sale in 2010

The 16kW/hr lithium-ion battery can be fully charged from 240 volt mains electricity in three hours and offers up to 40 miles of electric-only running. When its charge is depleted, a small petrol engine running on E85 bio-ethanol charges the battery while simultaneously providing current to the 150hp/273lb ft electric drive motor.

The highly aerodynamic car is based on the same basic architecture as the Vauxhall Astra and could even be built alongside the Astra at the company's Ellesmere Port factory.

Unlike conventional battery cars, the Volt will not leave you stranded at the side of the road with a depleted battery and GM reckons the cost of charging at current rates will be less than that of a cup of coffee and a daily charge will use less electricity than a household fridge. The Volt should cost just over a penny a mile to run and costs will be even less if the battery is charged with off-peak electricity.

The Volt goes into production at GM's Detroit-Hamtramck plant in late 2010 for the US market and discussions are underway about European production.

Friday, September 19, 2008

Mercedes' first hybrid is also first with lithium ion

After years of claiming that blue is the new green (in reference to its BlueTec diesel developments), Mercedes-Benz has taken a side step and introduced a hybrid to the market, the S 400 BlueHybrid. The modified S-Class sedan benefits from the addition of Mercedes' first hybrid drivetrain and the world's first implementation of a lithium ion battery in a production vehicle.

The battery, which makes this whole deal possible, is remarkable in that it's surprisingly compact thanks to lithium ion tech. The entire assembly is only slightly larger than a standard 12-volt car battery. The small size allows the battery to be located in the engine bay, where it replaces the conventional starter battery. This underhood placement, as opposed to a huge NiMH battery under the floor or in the center tunnel, means the S 400 BlueHybrid doesn't sacrifice interior or trunk space in the name of economy.

The modified V6 engine that powers the BlueHybrid has been "hybrid-ized" with the addition of a 20 horsepower disc shaped electric motor that is sandwiched between the gasoline powerplant and the 7G-Tronic automatic transmission, which produces 188 foot-pounds of torque. The electric motor boosts the output of the gasoline engine, but most of the efficiency gains are attributed to the way the electric motor works with the engine start-stop function. With the electric motor working as a starter, the engine can be shut off at speeds below 9 mph and instantly spun back up when it's time to go back onto gasoline power. Working together, the gas and electric powerplants generate 299 horsepower and 285 foot-pounds of torque and a pretty good combined fuel economy of 29 mpg. The S 400 BlueHybrid sits somewhere between the Lexus LS 600h L and the Toyota Prius on the gas-electric performance scale.

nside the cabin, the S 400 BlueHybrid gets the requisite drivetrain monitoring displays that most hybrids seem to come with these days. Upon closer inspection, we see that the entire speedometer has been replaced by an LCD, while the rest of the gauges (tachometer, fuel, temp, and so on.) remain traditional.

Looking at the horsepower, torque, and fuel economy numbers again, it's fairly obvious that the primary goal of the hybrid system is to boost the performance and economy as opposed to push hybrid technology to new levels of efficiency. It's fairly obvious that Mercedes hasn't stopped believing in the merits of the diesel powered engine, because they've essentially recreated diesel performance with the hybrid drivetrain.


Saturday, September 13, 2008

Mazda to show Kiyora concept, MX-5 face-lift in Paris

While Mazda waits on the cost of batteries to decrease before entering the hybrid/electric-vehicle market, the company is focusing on increasing the fuel economy of their standard internal combustion powered vehicles. The Kiyora concept, set to be officially revealed at the 2008 Paris Motor Show, is a lightweight, urban compact concept car that showcases Mazda's developments in the area of efficiency.

Mazda Kiyora (meaning "clean and pure" in Japanese) is equipped with Mazda's next generation four-cylinder direct injection engine and features the company's Smart Idle Stop System to boost fuel economy and reduce CO2 emissions. Mazda also claims the Kiyora features improved aerodynamic performance and an all-new platform designed to maximize weight reduction and a high level of safety.

Since the Kiyora is just a concept vehicle that most likely no one will ever drive, Mazda can claim whatever it pleases. However, the Kiyora likely represents the broad strokes of Mazda's future design and engine tech direction for the Mazda3, so it's worth investigation.

Mazda also plans to reveal the face-lifted Mazda MX-5, which has already leaked onto the Internet, and two new diesel vehicles, the Mazda6 equipped with Mazda's newly developed MZR-CD 2.2-liter turbo diesel engine and the Mazda2 powered by a MZ-CD 1.6-liter diesel engine.

Friday, September 5, 2008

Hybrids a wise choice, constantly improving

A hybrid? You want to drive a hybrid? You want to save money at the fuel pump and do your bit to save the planet, too? So you're going to buy a hybrid?

Be careful.

Some hybrids do get excellent fuel economy and almost all of them are better for the planet than most comparably-sized, strictly gasoline-powered vehicles. Hybrids are better than diesels from a "green" perspective, too.

Yes, fuel economy is 25-40 per cent better with a diesel over the same sized gasoline vehicle, but even the cleanest diesel is 50 per cent dirtier than, say, a Toyota Prius ($27,600) - the poster child for hybrid driving. Diesels are not yet good for the planet, though the technology to make them so is possible and being developed.

The point is, most hybrids take you farther and use less fuel than their gas-only counterparts. In some cases they cost less, too.

According to a recent study by the British Columbia Automobile Association (BCAA), some hybrids will save you thousands of dollars after five years of driving. Others will cost you more to run than a conventionally powered vehicle.

The trick here is to shop wisely and run the numbers. If you don't, you might find that your favorite hybrid, dollar-for-dollar, does not make cents. The question you need to answer: Will you recoup the hybrid premium by buying much less fuel and benefiting from government subsidies?

If it were just a matter of calculating fuel costs, all this would be quite easy. But it's not. There are those provincial tax rebates and the outgoing federal ecoAuto subsidy scheme to consider. And together they can be worth up to $5,000 off the cost of a hybrid.

The type of driving you do also matters. Commuters who spend long hours on the highway are probably better off driving a small car with a gas engine. For well under $20,000 - under $15,000 if you shop carefully - it is easy to find a compact or subcompact car with superb real-world fuel economy.

The wild card in all this is that for many, many people buying a car is as more an ego-driven decision, less so a financial one. Hybrids have their own special appeal because they push the "green" button - they speak of environmental sensitivity. The genius of the Prius is that strangers see it as not just a commuter car, but an environmental statement.
That's why Toyota Motor Corp. has sold more than a million Prius hatchbacks and it's why the Prius remains the top-selling hybrid in the world with some 200,000 sold last year in North America alone.

Toyota had the smarts to make the Prius look far different from anything else in the Toyota lineup. In addition, the car is bullet-proof. Several quality studies show that the Prius just does not break, even after several years of driving.

Speaking of which, the driving experience inside the Prius is unique. The gear shifter is mounted on the dash, the speedometer is in the centre and there's a giant screen showing you how much fuel you're saving every second.

Unfortunately, the interior feels cheap and space is cramped. Toyota clearly cut corners on cabin materials to recoup some of the cost of that expensive power train. Actually, that's two power trains - one gasoline and the other electric with a full battery pack.

And like all hybrids, the Prius does not do its best work on the open highway. Hybrids really save you money in stop-and-go city commuting thanks to electric motors that do the work at low speeds and computer controls that turn off the gas engine entirely when the car is stopped in traffic or just purring along slowly as an electric car.

Constant stopping allows the onboard batteries to recharge. With the gas engine off, emissions are cut substantially.

Some hybrids also have the electric motor kick in with some power assist in highway driving. The Honda Civic hybrid (which uses a different system than Toyota) does this. This is also why the General Motors Corp. pair of hybrid SUVs - the Chevrolet Tahoe and GMC Yukon - achieve good highway fuel economy numbers.

Performance-oriented hybrids such as the Lexus GS 450h and the discontinued Honda Accord hybrid are less fuel thrifty and unlikely to deliver a payoff at the pump. The instant snap of torque feels great when you goose the throttle, but using the electric motors for performance eliminates the fuel economy benefit.

Then we have these so-called "mild" hybrids. GM's Saturn Vue and Aura Green Line and Chevrolet Malibu Hybrid deliver some fuel economy savings as a modest price premium. GM developed a belt-driven starter that allows the engine to shut off when the car is stopped. This improves fuel economy a bit in some circumstances, though performance is not brilliant.

The truth is, calling these vehicles "hybrids" seems misleading; they lack a true gas-electric power train. Another point to consider: a four-cylinder Malibu almost matches the hybrid Malibu's highway fuel economy (6.5 litres/100 km versus the Hybrid's 6.5) and its 9.6 litres/100 km in the city is nearly as good as the Hybrid's 8.5.

In a nutshell, two of the best hybrids for the money are the Honda Civic hybrid ($26,350) and the Toyota Camry hybrid ($32,000).

A hybrid Honda Civic would be almost $4,000 cheaper than the conventional Civic EX to operate over five years, assuming an average gas price of $1.40 per litre and 20,000 km per year of driving, says the BCAA study.

The midsize Camry, the most spacious and comfortable of the high fuel economy sedans, will save you more than $2,100 over five years and you will not need to compromise in any way.
For utility and good fuel economy, the Ford Escape hybrid and the Toyota Highlander stand out. The Highlander will save you nearly $2,800 over five years and the Escape will save you about $700.

Keep in mind, though, that the study looked at the 2008 Escape Hybrid. The redesigned 2009 Ford Escape hybrid has improved power and better fuel economy. It's comfortable inside and the reengineered transmission and brakes give this vehicle a much better feel on the road. The better choice is the '09 here.

Choice is the key word here. Indeed, while there are a dozen or so hybrids for sale, more are coming.

Honda has three hybrids in the works, including a hybrid Fit and a hybrid-only model yet to be named. Look for them in the new year. Toyota is on pace to bring hybrid versions of many more of its models to showrooms. Ford will unveil a Fusion hybrid next year, which will be the first two-mode hybrid car by an American carmaker. It's long over due.

This fall, GM will introduce a true Saturn Vue hybrid and a Silverado pickup hybrid is also in the works. Chrysler, which has rolled out the Aspen hybrid SUV in Canada, also plans to bring a Ram hybrid to market.
Make no mistake, each new hybrid is better than the last. Batteries are getting stronger and more durable, engines are better tuned for the job and engineers are creating more sophisticated electronic controls that integrate the dual power trains more smoothly. The engineers are also figuring out new ways to trim more weight, thus saving fuel, too.

Hybrids are here to stay, then.