Tag: 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.

(Read More…)

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…
(Read More…)

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.

(Read More…)

By on July 5, 2011


You find some interesting historical documents in junked cars, and sometimes they’re glued to an engine’s valve cover. (Read More…)

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.

(Read More…)

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.

(Read More…)

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?

(Read More…)

By on June 8, 2011

Editor’s note: Ladies and gentlemen, for one night only, it’s the return of Curbside Classics to TTAC. You can catch Paul Niedermeyer’s work (along with contributions from an ever expanding crew of TTAC commenters and more) on a regular basis at the new Curbside Classics site. But this piece? It just had to be on TTAC.

There’s a big difference between creating and re-creating. The proto-hot rodders of yore scoured the junk yards for new solutions, not to replicate. The competition was as much in creativity as it was pure speed. Much of that has given way to endless replication, whether it’s a perfect restoration or a 1000 hp resto-mod. But creative juices are irrepressible, and they were certainly at work here. Want a daily driver Edsel, but not its 1950′s fuel-gulping ways? The solution was just a $200 junkyard engine away. But it had to be imagined first. Now that’s creativity, and a harbinger of the future. Which is exactly what the old car hobby needs: a new model, like this “Eco-Boost” Edsel.

(Read More…)

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.

(Read More…)

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 17, 2011

Yesterday we gave GM kudos for addressing its lingering vehicle weight issues by redesigning the head of its popular 3.6 liter V6, and shedding 13 lbs in the process. It was, we noted, the kind of news that showed GM is staying focused on the nitty-gritty of product development, sweating the details. But, according to a fascinating piece by GMInsideNews, new-product development at GM still has its issues. Specifically, Cadillac’s development of a new BMW 3-Series fighter, known as ATS after its “Alpha” Platform, has faced more than its fair share of what GMI calls “drama.”

Turf battles, unnecessary “wants” on checklists and ultimately a severe case of “Mission Creep” have created a vehicle that now needs a crash diet, according to GMI’s sources both within GM and at suppliers working on the Alpha/ATS program. For a vehicle that’s taking on an institution like the BMW Dreier (not to mention costing a billion dollars to develop), these are troubling signs indeed.
(Read More…)

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