car tech

GM’s Future Hydrogen Power Plans

GM's Future Hydrogen Power Plans

Gm Gen2 Hydrogen Fuel Cell Stack Mockup Side View  read full caption

The Gen 2 hydrogen fuel cell stack mockup

Just in case anyone thought General Motors was letting the air out of its hydrogen-powered vehicle efforts, the automaker put the public on notice this week that it remains as committed as ever to using its rolling science projects as a test bed for getting real world, mass-produced, hydrogen fuel cell vehicles in consumer driveways.

“We are not abandoning our fuel cell technologies,” proclaimed Charles Freese, executive director of GM’s Global Fuel Cell Activities, during a presentation at the automaker’s Burbank, California, fuel cell hub facility, “If we didn’t intend to maintain it, we would have left it with the old GM.”

The Gen 1 fuel cell stack… 

   

GM's Future Hydrogen Power Plans

  read full caption

 

The Gen 1 fuel cell stack

If you’ve been following GM’s fuel cell efforts at all, then you’ve no doubt heard of Project Driveway, a real-world test that began in late 2007 with the automaker deploying a fleet of 119 specially outfitted Chevrolet Equinox vehicles with a hydrogen fuel cell stack providing the juice for its electric propulsion. Drivers have logged more than 1.3 million miles in all around the world during the test, and even got in a few accidents (no, nothing blew up). For a complete breakdown on the present fuel cell Equinox and what it was like to drive, be sure to check out MT technical editor Kim Reynolds excellent take on the vehicle.While the project itself is winding down, Freese and Co. say the vehicles will still be used to test new electric motor and fuel cell components as well as to aid in further developing a hydrogen fueling infrastructure.

The centerpiece of GM’s future hydrogen-powered efforts revolves around its Gen 2 hydrogen fuel cell stack, which is being designed to fit in a four-cylinder engine bay. It’s reportedly some 220 pounds lighter than the stack powering the Equinox fleet, and uses about a third of the platinum (a metal critical to the overall process) than the present stack. Gen2 will employ fewer and lighter components and with its smaller overall size, GM hopes it will be able to spread the stack around to more vehicles in the future. In addition to the Gen 2 stack, GM is also continuing to develop its hydrogen storage solutions. The Equinoxes at present employ three tanks, which the automaker hopes to switch out with a smaller, two-tank setup.How long will this all take to bring to market? When it comes to hydrogen-powered vehicles especially, that’s always the million-dollar question. GM says it is focusing on producing a “production intent” program by 2015 – with “intent” being the proverbial hedging its bet word. But GM firmly believes that while by no means a silver bullet solution, hydrogen-powered vehicles will have a place in the Pantheon of future powertrains, and promised at the event that we’ll see something “sooner than you think.”

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UK Modified Car Cruises « Longlife

It never ceases to amaze me the lengths that some people will go to to endulge their passion.  I was at one of our Longlife depot launches last month and got talking to one of the many people who had come down with their car to enjoy the day.  Based in the Midlands, this guy has spent many thousands of pounds on his Fiat Punto, respraying it, and upgrading it so that you’d hardly recognise the original car.  He did also enter a competition to win one of our

 although that prize went to a friend of his who had only just started modifying his Fiesta. 

“Never mind, i’ll get it done at some point” was his comment.

What really amazed me was the fact that this yound lad – he’s probably in his early 20s – has driven 40,000 miles in the last twelve months going to cruises and meet ups all over the country!  Given that he’s based in one of the most central points of the country one can only assume that he’s been to pretty much every point across the UK and probably into Scotland as well.  I drive about 25,000 – 30,000 miles per year through pleasure and business in a car that’s very comfortable and designed to do that kind of mileage.  To have done that in a Punto which has been lowered to the point that it’s only about an inch from the ground is just astonishing. 

For those wanting a great day out and to meet up with other petrol heads, don’t forget the Topgear/Longlife Open Day at our Head Office in Dorset.  Saturday July 10th from 10am to 4pm.  There will be loads to see, thousands of pounds worth of prizes to be won and the Team Dynamics British Touring Car Team here to show you their race car.  Find us at Unit 1 Gore Cross Business Park, Bridport, DT6 3UX

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2004 Nissan Titan SE Crew Cab 4X4 – Long-Term Road Test – Auto Reviews – Car and Driver

2004 Nissan Titan SE Crew Cab 4X4 - Long-Term Road Test - Auto Reviews - Car and Driver

Having a full-size he-man pickup in the family is a little like having a brother-in-law named Buster who wears flannel shirts and can bench-press 350: You’re not eager to take him to social occasions, but he’s sure handy to have around when you’re moving a Hide-A-Bed sofa or hauling your boat out of the water.

So it is, or was, with our Titan long-term tester. Nissan’s first offering in the full-size-pickup market looks like a truck, sounds like a truck, and rides like a truck, attributes that don’t really enhance everyday commuting or errand running, particularly in the ‘burbs. But when there was real truckin’ to do—towing, hauling, or combinations thereof—the Titan endeared itself to one and all along glittering Hogback Road. Dress them up as you may, this is still the fundamental mission of trucks. All big pickups are capable of performing this mission, of course. But some of them do it with more zeal than others, and the Titan ranks right up there among the real zealots.

Not only is this Nissan’s first full-size pickup, but it’s also the first import-nameplate full-size truck to undergo the rigors of a

C/D long-term evaluation. Toyota has been in this previously all-American game much longer, but tiptoed cautiously onto the court with a series of sub-size, underpowered offerings to avoid stirring up anti-Japanese backlash. Which paved the way for Nissan to take a less inhibited approach.

Our Titan rumbled into the parking lot here in November 2003, a mid-level SE 4×4 crew cab augmented by a number of option packages that raised the price to $33,950. The extras included the $1300 Popular package (a power driver’s seat, power-adjustable pedals, an in-dash six-CD audio system with steering-wheel controls, a rear overhead console with wireless headphones, an auto-dimming rearview mirror with compass readout, and a universal garage-door opener), the $700 Off-Road package (17-inch wheels and BFG tires, Rancho shock absorbers, a shorter final drive, fog lamps, skid plates, and tow hooks), the $600 Big Tow package (a Class IV hitch, extendable side mirrors, a transmission-oil temp gauge, and stability control), and the $900 Utility Bed package (a spray-on bedliner, adjustable tie-down cleats, a lockbox, a 12-volt outlet, and Nissan’s Utili-track channel system).

It’s clear that our ordering intent was focused more on utility than on hedonism. Although not exactly austere, the Titan lacked leather upholstery and a DVD player and used lots of shiny-looking plastic. The cloth-clad seats came in for criticism, but it had to do with their comfort (so-so, particularly on long trips) and the quality of the cloth (stain-prone, as well as unattractive) rather than the absence of cowhide.

There are four key components in a truck’s utility index—power-to-weight ratio, cargo capacity, gross vehicle weight rating, and towing capability—and the Titan measures up well in all, particularly in the area of sheer muscle. As a newcomer, Nissan couldn’t offer the multiplicity of powertrain choices common to Yankee pickups and had to settle on one combination: a five-speed automatic mated with a 5.6-liter DOHC 32-valve V-8—just one offering, but a potent one. With 305 horsepower and 379 pound-feet of torque, the Titan’s V-8 is a very robust motivator. At 5394 pounds, our Titan was 271 pounds lighter than our long-term Dodge Ram Quad Cab (

C/D , June 2003), and a similar Titan was second-lightest (120 pounds heavier than a Toyota Tundra) in last year’s crew-cab comparo ("

,"

C/D , February 2004)—in which the Titan prevailed. At 7.6 seconds to 60 mph, that Titan was quickest in its test group, and our long-term tester was even quicker: 0 to 60 in 7.3 seconds when new, and 7.2 seconds after 40,000 miles.

V-8 muscle and robust structure also gave this truck a strong work ethic. Payload capacity for the 4×4 crew-cab version was rated at 1453 pounds, and although we never crowded the limit, the loads did go over a half-ton more than once, without any marked degradation of performance. Towing was a particularly strong suit. The Titan’s 9400-pound rating is near the top of the heap in half-ton pickup trucks, which made it a big favorite with club racers on staff here.

The only negative comments concerning the Titan’s shortcomings as a work truck had to do with its relatively short (67.1 inches) cargo bed. On the other hand, the short bed was complemented by a vast rear-seat area—61 cubic feet, plenty of room for three adults, and with the rear seats folded flat, plenty of room for cargo.

There were other complaints, although only one of them—an excessively noisy HVAC fan—was universal. There were also negative comments concerning the incessant macho muttering of the V-8 and the bifocal side mirrors—normal in their upper two-thirds, wide-angle at the bottom. But both of these generated almost as many positive comments.

Problems were few, and merely annoying, rather than debilitating. For example, the right-front door lock malfunctioned, making it impossible to open the door from the outside. A dashboard vent louver cracked. The CD player malfunctioned. The driver’s power-seat switch stopped functioning. And at the end of the Titan’s term of service, there was a factory recall for a seatbelt fix. All the repair work was covered under warranty.

Routine maintenance costs, however—five scheduled service stops over the course of the test—were steep at $736. Every 7500 miles, the Titan required an oil change and tire rotation that ran about $50. The 30,000-mile service broke the bank with a $517 workup that included a new air filter, various inspections, and a rear-differential oil change. For contrast, scheduled service for our Dodge Ram Quad Cab came to just $266. We also replaced the Titan’s worn-out original tires (BFGoodrich Rugged Trail T/As) at 38,916 miles with a set of BFG All-Terrain T/As that added $808 to our operating costs and eroded skidpad performance from 0.71 g to an indifferent 0.66.

Fuel economy, of course, is an oxymoron with vehicles in this class. With a hefty percentage of towing baked into its workload, our Titan averaged 14 mpg. Thanks to high fuel prices, this added up to a resounding $6829.

On the other hand, in terms of power, payload, performance, and price, this package is very attractive. The Titan lacks the posh interior materials that distinguish the Ford F-150 and the quiet refinement that makes Toyota’s Tundra so easy to live with. But as an all-around workhorse, ol’ Buster is tough to beat.

 

Article source: http://www.caranddriver.com/reviews/car/05q3/2004_nissan_titan_se_crew_cab_4x4-long-term_road_test

2004 Nissan Titan 4×4


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