Category: Engines

By on August 2, 2011

Autocar reports that the new “Baby Jag” roadster, will hit the European market by late 2012, cost £40,000 (about the same as a Boxster S) and “will blow the rest of the industry away.” According to the British buff book

The styling of the XE, Autocar understands, follows the company’s philosophy of “expressing lightness”. This is a new Jaguar styling principle that should result in the shape of future models “visually reflecting” the fact that they are made entirely of aluminium.

Unfortunately, because it shares its all-alu platform with the next-gen XK, it won’t be quite as light as a Boxster, with production weight estimated at 3,300 lbs. But, because this video only shows the “XE” (the name is still a matter of hot debate inside Jaguar) test mule, the most relevant detail is the drivetrain: a V6 of unrevealed displacement, in naturally-aspirated and supercharged forms, and hitched to an eight-speed automatic. The engine in this test video exhibits a nice, “emotional” raspy edge that is sure to satisfy in top-down driving, but the final clip of the video gives me the slushbox blues. Skip ahead to the 3:50 mark, when the mule accelerates from a stop, and it’s clear that (at least in mule form) this car shifts softly enough to sound almost like a CVT. Let’s hope they were just testing “touring” or “eco” mode or somesuch, because if you aren’t going to offer a manual transmission in a roadster, the slushbox needs to at least be able to bang some hard shifts when necessary.

By on July 29, 2011

While Fiat-Chrysler revives its Lancia brand by rebadging new Chrysler models with few other modifications, it’s attacking Maserati’s aging product lineup with a similar but more subtle strategy. Automotive News [sub] reports that the current Quattroporte has a problem

The car is too big to be a compelling driver’s car, but too small – particularly in terms of rear legroom – to serve as a good chauffeur’s car.

Luckily, according to the report, there’s an easy solution:

The problem will be resolved by offering two cars – a “baby” Quattroporte, code-named M157 and a larger Quattroporte, code-named M156.

The new flagship model will continue to use a Ferrari-sourced V8, and presumably an evolution of the current model’s underpinnings, extended by 70 mm to 5170 mm, or 203 inches… about the length of the forthcoming Cadillac XTS. The smaller version, on the other hand, is going to be a case study in the ever-evolving art of balancing shared components and premium differentiation.

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By on July 21, 2011

WardsAuto is a great source for industry news, but it’s pretty clearly not the best source for enthusiast news. Take, for example, a recent interview with Dodge SRT boss Ralph Gilles about the forthcoming compact Dodge and its possible SRT version:

“The Neon put the whole street-tuning scene on its ear with the factory turbo. We have to figure out how to get an entry-level SRT product to capture the next generation.”

The car to which Gilles refers will be a Dodge C-segment sedan derived from the same platform that shoulders the highly acclaimed European-market Alfa Romeo Giulietta offered by alliance-partner Fiat…

While Gilles is adamant that a high-performance C-car would be a welcome addition for Chrysler, he stops short of saying it’s a done deal, noting internal plans still are being hammered out.

However, it’s unlikely the entry-level model would share the 470-hp 6.4L Hemi V-8 shared by its SRT brethren introduced at the event here. [emphasis added]

Say it aint so, Dodge! I don’t know about you, but as far as I’m concerned it’s just not a true successor to the Neon SRT-4 unless it’s got a Hemi V8… damn Italians! Seriously though, how cool is it that Wards considers a V8-powered Fiat-based compact merely “unlikely” rather than “a surefire sign of the apocalypse”?
Alternative video after the jump…
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By on July 21, 2011

In my review of the VW Golf blue-e-motion on Tuesday, I noted that “the holy grail of EV development is a multi-speed transmission,” but that nobody has been able to build one that can reliably handle the 100% torque at zero RPM characteristics of an electric drivetrain. Tesla tried two different multi-speed transmissions (from X-Trac and Magna), before giving up and going with the single-speed setup that every production EV now uses. Nobody has even talked about a multi-gear EV since… until now. With Fisker’s Karma about to go to market, CEO Henrik Fisker tells Autocar that his firm is developing a multi-speed EV gearbox, and that it would improve performance in EVs like the Karma, saying

With the torque at the wheels increased by the use of a gearbox, Veyron levels of performance should be possible.

We’re as excited as anyone else by the idea of an EV with shiftable gears, but this sounds more like Fisker trying to drum up some hype for the Karma launch. After all, the Karma launches to 60 MPH in a leisurely 7.9 seconds in “stealth” (EV) mode and 5.9 seconds in “sport” mode with gas power to up the wattage… a far cry from Veyron performance. As C&D puts it:

The Karma’s initial surge is sufficiently potent to avoid damnation as a slug. But the physics conspire against it keeping pace with other $100K sports sedans.

Lugging over 4,000 lbs is certainly easier with a multi-gear transmission, but given the reliability challenge, we’d be more likely to trust an EV transmission from a reliable supplier rather than a boutique luxury PHEV maker. And until Fisker can back up the Veyron reference with some hard evidence, we’re filing this one under “intriguing but unlikely.” Still, it’s exciting to know that this technical challenge is still out there, unconquered by major manufacturer or feisty startup… in a world where cars are becoming increasingly mundane, the multi-gear EV transmission challenge is a throwback to the golden years of automotive development.

By on July 11, 2011

GM still won’t comment on the matter, but a recent rumor that the Cruze’s two-liter diesel engine will be federalized for the 2013 model-year has been confirmed to the AP [via the DetN] by “two people briefed on GM product plans.” That motor, designed by VM Motori and built since 2006 by GM-Daewoo, was recently updated to Euro 6 standards, and according to the Holden website, the Australian-spec version makes 160 HP (at 3,800 RPM) and 236 lb-ft (at 1,750 RPM), while returning 42 MPG (combined with manual transmission) or 35 MPG (combined, automatic). Of course those aren’t EPA numbers, and they could easily change by the time the engine is certified for US emissions standards.

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By on June 28, 2011

Smell that? It’s the gathering scent of a new industry trend towards natural gas. Honda’s expanded its pioneering Civic GX to 50 states, Sergio Marchionne wants to replicate his Italian CNG success at Chrysler (eventually), and now GM is jumping on the bandwagon while it’s still relatively uncrowded. The Winnepeg Free Press reports that GM has signed a development deal with Vancouver, B.C.-based Westport Innovations which could see a prototype light-duty natural gas-powered engine completed “within 18 months” if preliminary study proves promising. A Westport spokesman boasts

If both parties agree to move ahead with commercialization this would be one of the first pure OEM [natural gas-powered] products

You know, except the Civic GX which has been prowling American streets since 1998. Still, with Chrysler targeting CNG commercialization no earlier than 2017, GM could have a strong head-start on a fuel technology that promises to be a viable and promising gasoline alternative, especially if the NatGas Bill [PDF] passes, expanding $7,500 plug-in tax credits to natural gas vehicles. And GM’s got a strong partner in Westport, which has heavy-duty commercial deals with Cummins and Caterpillar. With Nissan all-in on EVs and years ahead of the competition in terms of global EV production capacity, look for other competitors to hedge their alt-energy bets… and natural gas is rapidly becoming the most popular alternative.

By on June 27, 2011

TTAC’s man-about-the-junkyard Murilee Martin has made the bold claim that we live in the golden age of cheap superchargers, but when it comes to new cars, we may be entering another “golden age” for superchargers as well. Eaton’s Ken Davis tells Automotive News [sub] that his firm is looking at doubling its supercharger sales as the technology comes into its own as a fuel-saving measure. Though turbochargers have received the lions share of attention as the industry moves towards downsized, forced-induction engines, Davis argues that supercharger have their own role to play in the effort, specifically when it comes to “downspeeding” engines to produce better power at lower RPM. He adds

Audi is our largest supercharger customer, and we are on a couple of platforms with Nissan… Nissan will bring their supercharged vehicles here. We’ll be on Audi and Volkswagen platforms, too. We are starting to get some attention.

By on June 27, 2011

Having seen its RX-8 banned from Europe for flunking emissions tests, Mazda may be going to extreme lengths to improve the efficiency of its next-gen rotary engine (codenamed 16x) which has been in development since 2007. Autocar reports

The 16X’s capacity has been raised from 1304cc to 1600cc, and it is also physically smaller and partly built from aluminium. The changes are designed to improve two of the biggest issues with rotary engine performance: fuel economy and torque delivery.

The Mazda source said the new engine “needed a smaller hole on the wall [of the combustion chamber]” as a result of eliminating the space-hungry normal spark plug. He also admitted to Autocar that the use of laser ignition “was absolutely possible”.

Recent advances in Japan have created high-power lasers made from ceramics that measure just 9mm in diameter and 11mm in length, easily small enough to fit into a car engine.

Not only would laser ignition allow the 16x to burn leaner, it would also allow more precise control of ignition points and timing. More importantly, it would cement the Wankel rotary’s status as the least-necessary, most overly-complex and thoroughly awesome engine ever created. And they say emissions standards always make cars less interesting…

By on June 14, 2011

Your worst nightmare. A pleasant drive along a yawning rural two-laner is met by a sudden ‘jolt!’  You quickly take your foot off the accelerator. Was it a transmission shudder? A miss in the engine? Some gravitational push from a UFO? After a couple of mini-jolts it looks like problem number one. You do what you can to not stress the tranny. But it gets worse and worse until ‘jolt!’ ‘JOLT!’ ‘Veeeee!!!!’ The engine spins over to the high rpm’s with nothing left to propel it. The tranny is toast… and now the fun begins.

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By on June 10, 2011

A pair of studies, by MIT and the International Energy Agency [via GreenCarCongress] take a look at what is rapidly becoming a hot topic in the world of alt-energy transportation policy: the use of natural gas to power cars and trucks. If you’re intrigued by the car industry’s “forgotten” fuel source (and with Honda Civic GX models going on sale in 50 states and a possible $7,500 natural gas car tax credit going before congress this summer, you probably should be), hit the jump for some comprehensive information about the future of natural gas-powered transportation.

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By on June 9, 2011

When Ford showed the world its new crop of compact-based cars and MPVs at January’s Detroit Auto Show, it announced that its C-Max compact MPV would be coming to the US in 7-passenger Grand C-Max form. But in a strangely prophetic turn of events (see video above), the 7-passenger model refused to show up. Now, according to Ford, the 7-passenger Grand C-Max won’t be coming to the US… instead the 5-passenger version will be sold as a dedicated hybrid model with a plug-in option. Why? Because it’s big in Europe… and because “One Ford.” Hit the jump for Ford’s explanation, and then wonder along with us: seriously, why not sell the 7-seat version too?

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By on June 6, 2011

In his Detroit News interview, GM CEO Dan Akerson revealed a minor mystery, which I present for your consideration and discussion:

In a recent meeting with engineers, for example, Akerson pressed them to explain the logic behind putting a big 6.2-liter engine in an unspecified car whose competitor has a 4.4-liter turbocharged engine. The engineers replied: “Well, we want to be able to beat the other guy.”

Akerson responded: “I don’t think the average buyer is going to buy an eight-cylinder, 530-horsepower (car).” His point: Decisions must be supported by a solid business case, and not just for bragging rights or as a marketing tool.

The Cadillac ATS-V seems like the most likely candidate, but then there’s also this to consider:

Akerson, who became CEO Sept. 1 and board chairman Jan. 1, already is weighing in on new vehicles. He recently greenlighted the next generation of the compact Chevrolet Cruze, but vetoed a new engine for a sports car set for production in 18 months.

The ATS is a sedan, not a sports car… so is this a different cancelation, or what? Over to you, B&B…

By on June 5, 2011

Don’t blame Jerry Hirsch for this headline. Heck, don’t blame the LA Times either. This headline comes courtesy of the Modesto Bee, which demonstrates its auto reporting incompetence by making the oldest assumption in the non-car-guy book: if they make V6 and V8 engines, they must make V4s as well. And though this abject ignorance may be good for a chuckle, it’s indicative of a larger problem: no matter how good of an auto writer you are, chances are you have to send your piece through an editor who knows little to nothing about cars.

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By on May 19, 2011

Pickuptrucks.com reports that you may not have to wait for Mahindra to work through its legal issues to get an efficient diesel-powered pickup, as the DOE has funded development of a four-cylinder Cummins diesel engine which is being demonstrated in a Nissan Titan. According to the report

Cummins refers to the engine by the codename “LA-4” with a 2.8-liter displacement (170 cubic inches). Initial power figures on the engine dyno have the mule test engine producing 350 pounds-feet of torque at around 1,800 rpm. A chart in the presentation shows targeted power levels to be approximately 220 horsepower and 380 pounds-feet.

The engine is likely a derivative of the four-cylinder ISF architecture that Cummins builds overseas, with 2.8-liter and 3.8-liter displacements. The overseas 3.8-liter is rated at 168 horsepower and 443 pounds-feet of torque…

To meet U.S. clean-diesel standards, the 2.8 would use diesel exhaust fluid to scrub nitrogen oxide emissions, like Ford and GM use today in their heavy-duty diesel pickups. It would also feature a so-called passive NOx storage system that would capture and hold NOx during cold starts, releasing the gas when temperatures rise to levels of max efficiency for DEF. The passive system would save fuel used today to jumpstart NOx scrubbing when the system is cold.

The upshot? 28 MPG combined, according to pickuptrucks.com. Given the discrepancy between EPA fuel economy numbers and the CAFE method, that means this engine could make a Titan (which gets 13/18 MPG EPA with its stock V8) more than compliant with the 2015 30 MPG truck standard. And because the DOE spent only $15m, this probably qualifies as one of the more promising government fuel-economy improvement programs in some time. After all, improving truck efficiency is one of the toughest aspects of CAFE compliance… and if a Titan can get nearly 30 MPG combined (about the same as current four-cylinder family sedans), the government’s $15m just bought it a crushing blow to the industry’s anti-CAFE carping.

By on May 18, 2011


“How will you sync the engines?” whined the naysayers when they heard about the plan to weld an ’89 Corolla front half to an ’87 MR2 rear half. “How will you cool it? The handling will be terrible! It’ll never work!” If there’s one thing that 24 Hours of LeMons racing has taught the automotive world, it’s that the experts’ preconceptions can be thrown right out the window when it comes time to drop a cheap race car into the crucible of an all-weekend-long road race. For example, who would have imagined that Chevy small-block and Honda B engines would turn out to be among the most fragile in the crapcan endurance racing world? And who would have imagined that the DoubleSuck MR2olla would do so well at the notoriously car-killing Reno-Fernley Raceway?
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