VW’s New 2.0L Diesel Will Bring New Engine Tech to U.S. – Eventually - Engine Builder Magazine

VW’s New 2.0L Diesel Will Bring New Engine Tech to U.S. – Eventually

As a rejuvenation of the current VW 2.0L diesel found in the non-U.S. Passat, the new engine adds several salient new features and upgrades. Variable valve timing is a new feature, and so is a special start-stop system, which shuts off the engine in the event the car’s speed falls below 7 mph.

volkswagen-2-0-liter-diesel-with-electrically-driven-turbo-and-268-horsepower_100489617_l-e1416020772569Volkswagen’s 2.0L diesel 4-cylinder engine produces 268 horsepower and unspecified torque figure; most are anticipating the torque number to be well over 400 lbs. ft.

With a power to volume ratio of 134 horsepower per liter (more than Ford’s  renowned 1.0L EcoBoost) the Volkswagen 2.0L employs Formula 1 grade technology and reportedly achieves record efficiency.

As a rejuvenation of the current VW 2.0L diesel found in the non-U.S. Passat, the new engine adds several salient new features and upgrades. Variable valve timing is a new feature, and so is a special start-stop system, which shuts off the engine in the event the car’s speed falls below 7 mph.

The new 2.0L does add an interesting twist where fuel injection is concerned. Instead of employing the time-tested PD unit injector fuel delivery system, VW went with a common rail injection system, delivering fuel directly to each combustion chamber. The new common rail system delivers fuel at a very high rate, operating at nearly 36,000 psi, or 2,500 bar, which is higher than the current VW TDI engines utilizing unit injection.

A piezoelectric system is used in the fuel injection system. This technology uses quartz crystals situated within the injectors, which expand when electricity is applied. Because the voltage applied to each injector can be manipulated and fine tuned by the ECU, it heightens the precision and efficiency of the injection process.

Perhaps the most technologically advanced aspect of the engine is its turbocharger unit. The turbocharger employed here is Formula 1 grade. Stemming from Audi technology soon to be employed on the next R8, the design essentially uses an electric motor to drive the compressor at lower rpm ranges.

This design will employ an electric motor to drive the turbo at lower rpm, until engine output is sufficient to drive the turbo by exhaust gases. Now, instead of waiting for the exhaust gases to reach a suitable level, power is available almost instantaneously. In Formula 1, the power for this system comes from the KERS system.

Another curious aspect of VW’s improvisation of this turbocharger design is the fact that, in addition to being electrically driven at lower outputs, the engine employs a “twin-turbo” setup. The question of the function of the second turbo is a mystery. Given that the engine is a straight four, that rules out the possibility of a parallel setup, and a sequential setup would seem unlikely due to the presence of the electrical unit. Perhaps, drawing on efficiency concerns, one compressor may be driven electrically, while the second may be much larger and driven by an exhaust turbine; though the first compressor would then technically be reclassified as some sort of supercharger.

The engine will be coupled to Volkswagen’s new 10-speed, dual clutch transmission, pictured below. The 10-speed is of the direct shift gearbox design, which allows either automatic or semi-automatic modes of operation. It replaces the current line of six-speeds and constitutes part of VW’s efforts to drastically improve fuel efficiency across their model range.

Arriving within the next couple of years, this new engine will be one of the more advanced on the market. It represents Volkswagen’s continued commitment to building diesel engines for passenger cars – a trend which seems to have caught on everywhere but in the U.S.

Sterling Shriber

Speedville.com

You May Also Like

Shop Solutions – January 2024

Before installing cam bearings, make sure to chamfer any oil holes and clean up back grooves of any sharp edges.

Engine Builder and Engine Pro present Shop Solutions in each issue of Engine Builder Magazine and at enginebuildermag.com to provide machine shop owners and engine technicians the opportunity to share their knowledge to benefit the entire industry and their own shops. Those who submit Shop Solutions that are published are awarded a prepaid $100 Visa gift card. Submit your Shop Solution at [email protected]. You must include your name, shop name, shop address and shop telephone number. Submitted Shop Solutions not published will be kept on file and reevaluated for each month’s new entries.

The Road to AAPEX Season 2, Ep 8

The innovation of the Lincoln Highway wasn’t just about building roads—it was about putting them on the map. The Wyoming Historical Society notes that the abandoned routes laid down by the Union Pacific railroad from 1867 to 1869 were often the best, and sometimes the only, east-west path available when developing the Lincoln Highway. In fact,

The Road to AAPEX Season 2, Ep 7

Rolling through Nebraska, Babcox Media’s Joe Keene meets kindred spirits as he drives the rare Lincoln Blackwood he refurbished for his journey to AAPEX. Along the way, he meets a family traveling the Lincoln Highway section by section, taking in sights such as the Great Platte River Road Archway Monument and the Classic Car Collection,

The Road to AAPEX Season 2, Ep 6

It’s the unexpected moments that make a trip memorable. Babcox Media’s Joe Keene, an ASE-certified technician who fixed a rare Lincoln Blackwood, enters Iowa on his drive to AAPEX and discovers the charm of small-town America along the Lincoln Highway. A standout spot is the Lincoln Highway Hotel. Related Articles – The Road to AAPEX

The Road to AAPEX Season 2, Ep 5

To know where you’re going, you have to know where you’ve been. For Babcox Media’s Joe Keene, an ASE-certified technician charged with fixing up a rare Lincoln Blackwood, it means heading back to Transtar Autobody Technologies in Detroit to put the finishing touches on the Blackwood. Then, he’ll put Babcox Media HQ in the rearview

Other Posts

Cummins Announces Next Gen X15 Diesel Engine

Cummins Inc. has announced it will launch its most efficient heavy-duty diesel engine ever. As the next product in the Cummins HELM 15-liter fuel agnostic platform, the diesel X15 will be compliant with U.S. EPA and CARB 2027 aligned regulations at launch. The next generation X15 diesel engine in North America will serve the heavy-duty

Scheid Diesel’s Billet Cummins Dragster Engine

One of the coolest diesel dragsters around belongs to Scheid Diesel. Shop owner Dan Scheid and machinist and drag racer Jared Jones work together on the billet Cummins-powered dragster. We caught up with Jared during the 2023 Ultimate Callout Challenge to get the details of what makes their Cummins engine tick in this Diesel of

Scheid Cummins engine
415 cid Billet Cummins Engine in a Pro275 Cadillac

Ring Racing owner Jared Ring revealed a metamorphosis to this 2016 Cadillac ATS-V last week. The Cadillac is now equipped with radial tires and a 415 cid Cummins engine built by Freedom Racing Engines, and the combo just competed at Lights Out 15.

Cummins-powered Cadillac ATS-V Pro275 drag car
Paul Vasko’s LML Duramax-Powered Diesel Dragster

During our weekend at the 2023 Ultimate Callout Challenge, there were plenty of fun conversations, but speaking with drag racer Paul Vasko was definitely a highlight. His passion is contagious, and his diesel dragster is definitely badass, thanks in part to a turbocharged LML Duramax engine. It’s our Diesel of the Week brought to you

Paul Vasko LML Duramax