VW Introduces Passat BlueTDI, BlueMotion 2 and Concept Variant BlueMotion II; Bin 5 and Euro 6 Compliance, Stop/Start and Regenerative Braking
6 October 2008
|The VW Passat Variant BlueMotion II. Click to enlarge.|
At the Paris Motor Show, Volkswagen unveiled the Passat BlueTDI (a Passat model with an SCR system to cut NOx to US Bin 5 and Euro-6 levels); the second-generation of the Passat BlueMotion, equipped with a stop/start system as standard; and a concept Passat Variant BlueMotion II, which takes the SCR system of the BlueTDI model and applies it in a more fuel-efficient BlueMotion variant featuring regenerative braking. The Passat BlueTDI is due to go into production in 2009; the new Passat BlueMotion is launching this year. VW plans to produce the BlueMotion II as well.
Among its other introductions at the show, VW highlighted the concept of the next Golf GTI with reduced fuel consumption; a new v6 FSI (gasoline direct injection) model of the Phaeton (which will now also feature stop/start systems as standard); and the sixth generation of the Golf (earlier post).
Passat BlueTDI. The Passat BlueTDI is a preview of a series of coming BlueTDI models that meet US Bin 5 and Euro 6 standards. The Passat Variant BlueTDI being shown in Paris uses a selective catalytic reduction (SCR) system with AdBlue serve to reduce NOxemissions in the exhaust.
The Passat Blue TDI is based on a variant of VW’s 2.0-liter 103 kW (138 hp) that delivers a slight power boost (105 kW/ 140 hp). Despite the slight power increase, the Passat BlueTDI consumes up to 0.3 liter less than the conventional TDI, depending on the body version. In the case of the Passat Variant BlueTDI, fuel consumption is 5.5 L/100km (43 mpg US) with CO2 emissions of 144 g/km; for the sedan version, consumption is 5.2 L/100km (137 g/km CO2). Power is transferred via a 6-speed manual transmission. As an option, there will also be a Passat Blue TDI with 6-speed DSG.
Passat BlueMotion 2. The BlueMotion label denotes the most economical and least-polluting model in each of Volkswagen’s product line-ups. The second-generation Passat BlueMotion 2 features a new common rail TDI engine delivering 81 kW (108 hp), combined with a standard five-speed manual gearbox.
The new BlueMotion uses an start/stop system further to reduce fuel consumption and emissions in city driving. When traffic has stopped, the driver puts the car into neutral and takes his or her foot off the clutch. The Automatic Start/Stop system then temporarily stops the engine; a message appears on the multifunction computer saying ‘Start Stop’. Once the traffic lights change and the clutch is re-engaged, the sign on the computer goes out, the engine restarts and the driver continues as usual. This can save up to 0.2 L/100 km in city driving, according to Volkswagen.
The new Passat BlueMotion continues to employ the fuel-saving modifications made to the original BlueMotion. These include lower cooling system drag, more efficient underbody airflow and lowered suspension, as well as revised gear ratios for third, fourth and fifth, a revised engine management system and a lower engine idle speed.
All second-generation Passat BlueMotion models—like the first generation—have a Diesel Particulate Filter (DPF) as standard. The new BlueMotion also features low-friction propshafts, enhanced low rolling resistance tires and very light wheels made from a light flow-forming steel.
The result is average fuel consumption of 4.9 L/100km average fuel consumption (48 mpg US) with 129 g/km CO2. The Passat Blue Motion meets the Euro-5 emissions standard.
Passat Variant BlueMotion II. The concept Passat Variant BlueMotion II combines the low-emissions of the BlueTDI with the fuel efficiency of the BlueMotion.
Some of the features adopted from the Passat BlueMotion 2 are its aerodynamic modifications, new Automatic Start/Stop system, common rail TDI and transmission with longer gear ratios. The Passat BlueTDI contributes the SCR catalytic converter together with AdBlue additive to reduce nitrogen oxides (NOx). The concept car also represents VW’s first application of a regenerative braking system in a production model.
The combination of technologies results in a Euro-6 compliant Passat with fuel consumption of 4.1 L/100km (57 mpg US) and CO2 emissions of 109 g/km—a reduction of an additional 0.8 L/100km compared to the normal version of the Passat variant BlueMotion, and a 20 g/km reduction in CO2. Volkswagen will offer the production version of the Passat BlueMotion II both as a sedan and as a Variant.
In the Passat BlueMotion II, the technological components of the BlueMotion concept are being merged with those of the entirely new BlueTDI system for the first time. BlueMotion shows just how to make conventional—and therefore affordable—cars extremely economical by applying clever drive technologies and special aerodynamic modifications. The BlueTDI concept shows, in parallel, how a high-tech emissions system can further reduce emissions using a SCR catalytic converter. When the two of these are packaged together in a car, entirely new possibilities emerge: the 4.1 liters fuel consumption and over 1,700 kilometer range of the large Passat Variant demonstrate the potential of our drive technologies impressively.—Prof. Dr. Martin Winterkorn, Chairman of the Board of Volkswagen AG
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