Volkswagen has revealed a raft of new ultra-frugal petrol models in the Golf hatchback, Estate and SV. Powered by a new three-cylinder 1-liter 115ps turbocharged petrol engine, the new Golf TSI BlueMotion returns 4.3l/100km on the combined cycle with CO₂ emissions of just 99g/km. Also available for the first time with a BlueMotion engine is the option of a DSG automatic gearbox.
At the heart of the TSI BlueMotion is a 1-liter (999 cc) three-cylinder turbocharged TSI engine from the EA211 series. This generates 115ps from 5,000-5,500rpm; standstill to 100km/h takes 9.7 seconds while top speed is 204km/h. With 200Nm, the TSI BlueMotion has the highest specific torque of any large-scale production series of petrol engines. This is available from 2,000rpm, though 150Nm is already delivered from 1,500rpm.
Inside the engine, an ultra-rigid crankcase made of lightweight die-cast aluminum and its compact construction with three cylinders mean the 1-liter TSI is around 15kg lighter than a comparable four-cylinder engine. The exhaust manifold has been fully integrated into the cylinder head and fitted with a cooling jacket to make the best possible use of exhaust gas energy during the warm-up phase and to cool the exhaust gases even more effectively at high loads.
The TSI BlueMotion is also fitted with a toothed belt, which compared to a chain drive, reduces friction by around 30%, while the maximum injection pressure of the 1-liter TSI is high for a petrol at 250 bar, and advanced five-hole solenoid injectors ensure precise fuel injections and results in faster energy conversion.
The new 1-liter BlueMotion engine will also be available in the Golf Estate and Golf SV, with predicted fuel economy figures of 4.3l/100km and 99g/km (103g for DSG) for the Estate, and fuel economy of 4.5l/100km and 105g/km (4.6l/100km and 105g/km for DSG) for the SV.
June 26, 2015