With all the introduction of the seventh Golf (in 2012), Volkswagen was able to eventually reverse the upward weight spiral, despite important progress made in the aspects of safety, comfort, convenience and agility. Compared to the preceding generation Golf, up to 100 kg were saved. The newest Golf TSI BlueMotion also gains from this now.

Aerodynamics

The BlueMotion models by Volkswagen have been characterised by exceedingly great aerodynamics. This really is precisely what the brand new Golf TSI BlueMotion offers as well. Thanks to an abundance of aerodynamic changes, it reaches an outstanding Audio Cd value of just 0.28. The car's excellent aerodynamics create a decisive contribution towards its low fuel consumption. The aerodynamics were perfected, among other things, by lowering the chassis (by 15 mm), designing a top engine cooling inlet that is nearly entirely closed off to the outside (with incorporated BlueMotion badge) and using radiator louvres that start predicated on cooling needs in conjunction with the optimised cooling airflow. Moreover, the Golf TSI BlueMotion comes with a rear spoiler.

Drivetrain efficiency -

Three primary aims were set for the development of the 1.0 TSI (85 kW / 115 PS) compared to the already really great 1.2 TSI (81 kW / 110 PS) with four cylinders: it should reach lower weight and reduced CO2 emissions while enhancing driving dynamics. This was a challenge, but all three goals were attained in the new three-cylinder engine. The gain in dynamics and great responsiveness are examined on the way. Figures that most represent driving dynamics would be the increase in torque from 175 Nm to 200 Nm and the better flexibility figure of 11.0 seconds (1.2 TSI: 13.0 seconds, manual gearbox, 80-120 km/h in 5th gear). One other important aim was to reach the bottom possible level of engine sound. Predicated on the interplay of various internal engine adjustments - that is, without additional insulating materials, the team of engineers implemented acoustic guitars that are to the degree of good four-cylinder engines here.

Highly advanced fundamental layout

The Volkswagen EA211 engine series functioned as the revolutionary basis for designing the new 1.0 TSI. This development code identifies a family of state of the art petrol engines and comprises both three-cylinder and four-cylinder engines. The EA211 engines made their debut in the small Volkswagen up! And progressively captured up auto segments . Engine variations with 1.0, 1.2 or 1.4 litres of displacement - with or without turbocharging - are used, depending on the model series. The high tech engine now being used in the new Golf TSI BlueMotion is the most recent three-cylinder engine with turbocharging, and it represents the highest evolutionary phase of downsizing nowadays. Volkswagen gives the engine in the Golf TSI BlueMotion in combination using a 6-speed manual gearbox as standard. As an option, the most fuel-efficient petrol-powered Golf ever can likewise be ordered with a 7-speed dual-clutch gearbox (DSG). The combined fuel consumption and CO2 figures are indistinguishable regardless of the gearbox: 4.3 l/100 km (superior petrol, 95 octane) which equates to 99 g/km CO2. With these values, the Golf TSI BlueMotion is among the few cars in its category to fulfil the European efficiency class A.

Driving fun by agility

The engine's maximum torque of 200 Nm is available from a low 2,000 rpm; this figure remains constant up to 3,000 rpm. 200 Nm is considered a top value to get a three-cylinder engine, along with the engine offers an ample 175 Nm of torque to the front axle at only 1,500 rpm. This is one reason why this engine's performance is so dynamic. What is more: the turbocharged petrol engine with its 10.5:1 compression ratio empowers both cruising in high gear - thanks to the maximum torque being accessible at low revs - and fast upshifting from lower gears at higher rev amounts. The turbocharged engine develops its maximum power of 85 kW/115 PS between 5,000 and 5,500 rpm. Though the three-cylinder sets standards for efficiency, additionally, it enables dynamic driving performance. The Golf TSI BlueMotion reaches 100 km/h in 9.7 seconds and goes on to a top speed of 204 km/h.

Advanced engine layout - Highlights of the 1.0 TSI

As a result of an ultra-stiff crankcase made of lightweight die cast aluminium (weight: 15 kg), and its particular compact construction with three cylinders instead of four, the 1.0 TSI - at 89 kg is around 10 kg lighter than a comparable four-cylinder engine. The meticulously executed lightweight design strategy employed by Volkswagen ranges all the way down to the tiniest of details. Some instances:

Crankshaft group has low friction and low mass

The crankshaft group - pistons crankshaft and connecting rods - is differentiated by low transferring masses and low friction. The aluminium pistons and forged connecting rods were weight-optimised such that the 1.0 TSI can do without a balancer shaft. By reducing the weight of the crankpins the total weight of the crankshaft was likewise reduced by six per cent. Four counterweights reduce internal forces in the crankshaft, which in turn reduces loads on the crankshaft main bearings. Really modest-sized yet extremely robust crankshaft main bearings and connecting rod bearings make a significant contribution towards reducing friction in the new engine.

Exhaust manifold incorporated in cylinder head

Another really high priority item throughout the development phase was thermal management. The exhaust manifold of the 1.0 TSI has been fully integrated into the cylinder head - that features four valves per cylinder - and fitted with a different cooling coat to make the greatest potential use of exhaust gas energy during the warmup period - and to cool the exhaust gases even more effectively at high loads. Together with that, Volkswagen engineers designed a dual loop cooling system. Using yet another thermostat, the coolant temperature in the cylinder crankcase modulated into a higher rate than in the cylinder head. This offers advantages when it comes to internal engine friction, which in turn possess a positive effect on fuel economy.

Perfect heating and cooling

The base engine is cooled by way of a high-temperature loop using a driven coolant pump, while a low temperature loop, powered by an electric pump, circulates coolant to the intercooler and turbocharger housing as needed. In order that it warms up fast like the engine, the cylinder head circulation loop heats the passenger compartment.

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2015 Volkswagen Golf Sportsvan TSI BlueMotion