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        home > news > Automobiles > Experimental Engine Could Deliver Econobox Mileage and Sports Car Performance

        Experimental Engine Could Deliver Econobox Mileage and Sports Car Performance

        Mahle tests new downsized engine technology.

        Mike Davis
        July 23, 2013
        Mahle's modified VW is being used to test the new downsized engine technology.

        A German manufacturer best known for its heavy duty truck engine components could re-write the rules when it comes to passenger car powertrains.  The company is the Mahle Group, and it’s presently showing off a “demonstration vehicle” with an experimental   three-cylinder 1.2-liter single turbocharged gasoline engine that promises to meet very tough emission regulations while maintaining performance in mid-sized cars.

        Based in Stuttgart, Germany, Mahle entered the U.S. market some 40 years ago supplying aluminum pistons for heavy duty truck engines.  Mahle last month opened its American headquarters and R & D facility in Farmington Hills, Michigan, in Detroit’s western suburbs.

        Your Auto News Source!

        The German company’s powertrain subsidiary is barnstorming its experimental car, dubbed a “downsizing demonstration vehicle,” to U.S. vehicle manufacturers with the objective of gaining research—not engine-production—contracts.  But longer-term its design could provide the industry a significant alternative to conventional engine designs.

        Two views of Mahle's engine prototype.

        Mahle manufactures many engine components such as connecting rods, heads, camshafts, cylinder sleeves, etc. in plants around the world.  It’s been a Tier One supplier to European automakers, including Mercedes and BMW and is showing off its demo vehicle wrapped in a VW Passat wagon model not marketed in the U.S.

        The powertrain in the demo vehicle is fully operational, designed to meet all presently known government regulations, based on the European test cycle – though that is different from the testing employed by America’s EPA.

        But while the numbers might change a bit when put through the U.S. test cycle, the tiny engine has been able to deliver 163 horsepower with outstanding highway driving torque, producing 40-plus mpg in Euro highway cycle fuel economy (5.8 liters per 100 km) with a 30% reduction (to 135 grams per km) in carbon dioxide output.

        Bernie Porter, a technical specialist at Mahle’s Powertrain operations, describes this Mahle engine as a logical next step from what Ford Motor Company has done with its 1.0-liter Ecoboost engine that will be added to the U.S. Fiesta option list for 2014.  Mahle Powertrain compares this engine in the 3,500-lb. Passat with either the current 1.8-liter or 2-liter VW gasoline engines.

        Among other powertrain products under development at Mahle is a 2-cylinder “compact range-extender” for hybrid and battery-electric vehicles.  According to Mahle Powertrain, field research shows the typical motorist’s driving patterns do not require all the battery capacity typically specified in today’s juicers.   The range-extender is designed to optimize this discovery in order to downsize batteries, thus reducing cost.

        This Mahle plug-in development is designed to work in a “C-sized” vehicle such as Camry, Accord, Fusion or Malibu.  Again, the marketing effort by the German company is aimed at securing research contracts at this state of the development.  Later it might evolve into component production deals.

        Incidentally, Mahle recently completed the acquisition of 51% of another major German manufacturing company, Behr.  It has a joint venture with Bosch, among other such cooperative operations, all internally financed.

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        3 responses to “Experimental Engine Could Deliver Econobox Mileage and Sports Car Performance”

        1. heyfred3000 says:
          July 23, 2013 at 6:41 pm

          This sounds quite interesting – and if Ford’s 3 cyl. finds a market here as such engines have in Europe, turbo-diesels for long distance drivers and this type hybrid for everyday use might be the wave of the future. I also, however, wish that VW would bring that pictured Passat wagon, with the 170 hp version of the 2.0L turbodiesel, to the USA!!

          Reply
        2. Jorge M. says:
          July 24, 2013 at 8:41 am

          This is good power output from the small 1.2L engine – but there are several issues that always need to be addressed with these small engines. The first is 3-cyl. engines are shakers due to the firing spacing. Second to achieve the high torque/HP requires high boost, which requires either dual stage or a large single turbo. A large single stage causes turbo lag. Three these small engines produce good torque and power once the vehicle is actually moving and have significant throttle opening.

          Unfortunately that means that start-off is an issue because the engine has no torque to move the vehicle until it’s in significant boost. This requires auot makers to use a very low first gear in the trans to move the vehicle from a stop. This causes a number of issues including reduced mpg, increase cabin noise, etc.

          VW has a variety of small three and four cylinder engines. The 1.4L four cylinder, 16V Turbo is a better choice than this Mahle engine for practical use, but I understand Mahle’s efforts to showcase their engineering abilities which are world class.

          Mahle has been supplying pistons to some U.S. car makers for years but they’d like to supply many other components and in higher volumes. The difficulty they face is they make the best components in the world but U.S. car makers are more interested in price and “good enough” design, engineering and quality. It’s a totally different mindset than what German engineers have – which is to produce the very best product possible while keeping costs in check.

          Reply
        3. bryanrmorris says:
          July 24, 2013 at 5:19 pm

          Ditto on the TDI Passat wagon.

          Reply

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