2002 Volkswagon Jetta Gls 1.8t on 2040-cars

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VW Jetta TDI dyno shows HP loss trying to recreate cheat mode

Volkswagen is working on a fix for diesel-engined vehicles that are out of compliance with emissions regulations in the US and other countries. We're told that engineers will be presenting a solution internally sometime this month, but that doesn't mean we'll actually see it in the wild this month. One big question we have about the coming fix is, will it affect the car's performance? That question relates to another we have about the engine as it is: How much performance would the 2.0-liter diesel lose right now if it were turned down to pass US emissions? The Fast Lane Car tried to sketch some answers by going to a shop in Denver, Colorado to run a 2011 Jetta TDI with a six-speed DSG transmission on an all-wheel-drive dyno. The thinking was that if you ran all four wheels the car would think it was on the road, whereas if you ran only two the car might think it's being tested. We'll get straight to the numbers: the stock sedan is quoted at 140 horsepower and 236 pound-feet of torque. When run with all four wheels turning it produced an uncorrected 114 hp and 214 lb-ft at the wheels. When run with just two wheels in motion the Jetta got 113 hp and 188 lb-ft at the wheels. Reading the graph, we're told that power differences between the two runs were as much as 15 hp and 32 lb-ft. You'll need to take some salt with these numbers, though, because the dyno and test protocol in the video are nothing like those used by the EPA. The shop attempts to trick the Jetta into 'emissions testing mode' by using the front wheels only for the two-wheel-drive run, but we have a feeling the software code at issue is far more sophisticated than that, since the ICCT, UVA, the EPA, and CARB investigated the situation for more than a year and couldn't figure out. Also, the technician adjusts for being a mile above sea level with a correction factor of 1.2 applied to horsepower and torque, which inflates the disparity in the final power differences over the two runs. Go to YouTube and read the lengthy comments on the video left by Andrew Price for a more thorough dissection of what could explain TFL's disparities. You can watch the video above, and feel free to try and dissect the results yourselves in the comments below. Related Video:

How VW's hyper-efficient XL1 will influence the next Golf

In 2007, the European Union mandated fleet average CO2 emissions of 158.7 g/km. For 2015, that figure will drop to 130 g/km, and the target for 2020 is an ambitions 95 g/km. Thanks to some German politicking, that target will be phased in from 2020 to 2024, but it will still apply to 80 percent of passenger cars in that first year. In US miles per gallon, that's the equivalent of going from about 35 mpg to 42 mpg to 57 mpg. The current Volkswagen Golf is rated from 85 g/km of CO2 to 190 g/km depending on model - and zero for the e-Golf, so for the next-generation MkVIII hatch due in 2019, to meet the goal, Volkswagen engineers will need to introduce a bunch of new tricks. According to a report in Autocar, VW be mining its hyper-efficient XL1 for some of them.
Predictions for the next Golf include a variable-compression engine, an electric flywheel and an electric turbo, along with taking greater advantage of coasting. Volkswagen could be getting help from Audi with the electric turbo and variable-compression engine and electric turbo, with Audi already having shown off the former and brand technical boss Ulrich Hackenberg confirming the VW Group is working on the latter. It's possible the flywheel system could also have the mark of The Four Rings: Autocar mentions a British system that Volvo is testing, but the R18 e-tron Quattro racer has been using one for years.
The need for such features is because the company won't be able to net enough future gains from just aerodynamic improvements and advanced materials. As price will be a factor (the regulations are expected to "add hundreds of euros to the cost of building a car"), adding much more aluminum or carbon fiber is an unlikely option. We're told the next generation won't be longer or wider than the current car, and being Europe's most popular model, VW doesn't want to make a big bet on futuristic aero, but the report says the MkVIII will "likely" have "the most aerodynamic treatment yet seen on a production vehicle," the area where lessons learned from the XL1 will truly be seen.

Rising aluminum costs cut into Ford's profit

When Ford reports fourth-quarter results on Wednesday afternoon, it is expected to fret that rising metals costs have cut into profits, even as rivals say they have the problem under control. Aluminum prices have risen 20 percent in the last year and nearly 11 percent since Dec. 11. Steel prices have risen just over 9 percent in the last year. Ford uses more aluminum in its vehicles than its rivals. Aluminum is lighter but far more expensive than steel, closing at $2,229 per tonne on Tuesday. U.S. steel futures closed at $677 per ton (0.91 metric tonnes). Republican U.S. President Donald Trump's administration is weighing whether to impose tariffs on imported steel and aluminum, which could push prices even higher. Ford gave a disappointing earnings estimate for 2017 and 2018 last week, saying the higher costs for steel, aluminum and other metals, as well as currency volatility, could cost the company $1.6 billion in 2018. Ford shares took a dive after the announcement. Ford Chief Financial Officer Bob Shanks told analysts at a conference in Detroit last week that while the company benefited from low commodity prices in 2016, rising steel prices were now the main cause of higher costs, followed by aluminum. Shanks said the automaker at times relies on foreign currencies as a "natural hedge" for some commodities but those are now going in the opposite direction, so they are not working. A Ford spokesman added that the automaker also uses a mix of contracts, hedges and indexed buying. Industry analysts point to the spike in aluminum versus steel prices as a plausible reason for Ford's problems, especially since it uses far more of the expensive metal than other major automakers. "When you look at Ford in the context of the other automakers, aluminum drives a lot of their volume and I think that is the cause" of their rising costs, said Jeff Schuster, senior vice president of forecasting at auto consultancy LMC Automotive. Other major automakers say rising commodity costs are not much of a problem. At last week's Detroit auto show, Fiat Chrysler Automobiles NV's Chief Executive Officer Sergio Marchionne reiterated its earnings guidance for 2018 and held forth on a number of topics, but did not mention metals prices. General Motors Co gave a well-received profit outlook last week and did not mention the subject. "We view changes in raw material costs as something that is manageable," a GM spokesman said in an email.