Tuesday, November 5, 2024
HomeAutomotiveVolkswagen's EA 211 TSI evo Engine Explained

Volkswagen’s EA 211 TSI evo Engine Explained

With the exception of the fully-electric ID.3 and ID.4, quite a number of models produced by Volkswagen are powered by the automaker’s EA 211 TSI evo engine. Essentially an upgraded version of the EA 211, the evo is available in 1.0- and 1.5-litre versions, with either three or four cylinders.

So what are the key technological features that go into the making of these engines? First up is a Miller combustion cycle that reduces consumption in the part load range in particular. This is achieved by closing of the inlet valves early, which in return cuts throttling losses. The process also enables a high compression ratio of 12.5:1 in the four-cylinder and 11.5:1 in the three-cylinder unit.

The EA 211 evo also employs variable turbocharger geometry (VTG) with up to 2.8 bar of pressure to achieve maximum torque at very low rpm. In the 1.0 TSI, the turbocharger can withstand exhaust gas temperatures of up to 950 degrees Celsius and spools to a maximum speed of 289,000 rpm.

In the 1.5 TSI, Active Cylinder Management (ACT) shuts down the second and third cylinders at low to medium loads and engine speeds by deactivating injection, ignition and the valve gear to reduce fuel consumption.

The common rail injection system operates at a maximum pressure of 350 bar and is capable of delivering up to five injections per combustion cycle. Remaining soot particles from the exhaust gas are filtered by a particulate filter located directly downstream of the engine.

Lastly, aluminium crankcase keeps the weight of the EA 211 evo in check, while iron coating in the cylinder walls reduce friction. Efficient thermal management is taken care of by a map-controlled cooling module.

BHP diesel

PRESS RELEASE

It is THE petrol engine at Volkswagen: the TSI evo with a capacity of 1.0 and 1.5 litres is available for almost all product lines from the up! GTI to Passat, from T-Cross to Tiguan. Whether with three or four cylinders – a package full of high-tech solutions makes the engine both efficient and powerful.

“The acronym TSI stands for turbocharged stratified injection, denoting the combination of turbocharging and direct injection,” explains Dr Frank Welsch, Member of the Board of Management responsible for Technical Development at Volkswagen. “We already have 15 years of experience in building compact TSI engines, and we are consistently enhancing them with new technologies. The 1.0 TSI and 1.5 TSI are highly efficient, high-tech engines that have moved us well to the front in today’s competition.”

Power meets efficiency. Whether the three or the four-cylinder variant, with 90 or 150 PS – the compact TSI evo engines combine powerful performance and high efficiency. In the Golf family, for example, the 1.0 eTSI is available in conjunction with a mild hybrid system. It generates 81 kW (110 PS) and constantly delivers 200 Nm of torque between 2,000 and 3,000 rpm. The three-cylinder engine propels the Golf to a top speed of 202 km/h, yet it only consumes an average of 4.5 to 4.3 litres of petrol per 100 km (depending on the equipment) in the NEDC cycle. This corresponds to between 102 to 98 grams of CO2 per km.

From EA 211 to EA 211 evo. The 1.5 TSI and 1.0 TSI originate from the EA 211 engine family, which launched in the Golf 7 in 2012. In 2016/17, the four-cylinder units were completely revamped. At the same time, their previous capacities of 1.4 and 1.2 litres were standardised at 1.5 litres. The improvements were integrated into the 1.0-litre three-cylinder engine in 2019. Both power units have had the designation EA 211 TSI evo since the technology updates.

With only two capacity variants – 999 and 1,498 cc – both base engines offer an wide power range. The 1.0 TSI covers the range from 66 kW (90 PS) to 85 kW (115 PS), while the 1.5 TSI generates 96 kW (130 PS) or 110 kW (150 PS). In Polo and Golf, the three and four-cylinder units are also designed for operation with natural gas as TGI engines. Within the Golf family, both engines operate together with a 48-volt mild hybrid system. This reduces consumption, boosts the tractive power and improves spontaneous power development.

Enhanced Miller combustion process. Depending on the number of cylinders and their power class, the compact TSI evo engines integrate different technological components. The four-cylinder with 96 kW (130 PS) and the three-cylinder variant use a combustion process based on the so-called Miller cycle. This reduces consumption in the part load range in particular, that is to say when operated in realistic customer conditions. This is achieved by early closing of the inlet valves, thus reducing throttling losses and enabling a high compression ratio – 12.5:1 in the four-cylinder and 11.5:1 in the three-cylinder engine.

However, the lower fresh gas volume must not reduce the output and torque, which is why two sophisticated technologies are on board. Using an extremely fast and precise hydraulic system, the inlet camshaft can be continuously adjusted to increase filling during acceleration. The exhaust camshaft is also adjustable.

The turbocharger features variable turbocharger geometry (VTG) – for the first time in petrol engines for the high-volume segment. This permits absolute charge pressures up to 2.3 bar in the four-cylinder engine with 96 kW (130 PS) and even 2.8 bar in the three-cylinder variant. As a result, the engines can spontaneously build up their maximum torque already at very low rpm. In the 1.0 TSI, the turbocharger can withstand exhaust gas temperatures of up to 950 degrees Celsius, and it achieves a maximum speed of 289,000 rpm.

Active Cylinder Management ACT. Active Cylinder Management (ACT) is a further highlight to reduce fuel consumption of the 1.5 TSI. The system shuts down the second and third cylinders at low to medium loads and engine speeds by deactivating injection, ignition and the valve gear. Switchover takes place very quickly and practically unnoticed. The efficiency increases in the active cylinders, while the middle cylinders simply follow with practically no losses – they are reactivated when the accelerator is pressed.

350 bar injection pressure. The common rail injection system in all TSI evo petrol engines operates at a maximum pressure of 350 bar and is capable of delivering up to five injections per combustion cycle. The fuel is atomised into very fine droplets, mixture formation is precise, and raw emissions are kept at low levels. A particulate filter is located directly downstream of the engine which filters almost all remaining soot particles from the exhaust gas.

Aluminium crankcase with coated cylinder walls. The aluminium crankcase makes TSI evo engines very lightweight – the three-cylinder variant weighs just 88 kilograms. Both the three-cylinder and the four-cylinder engines with an output of 110 kW (150 PS) benefit from sophisticated manufacturing technology to reduce friction in the crankshaft group: the cylinder walls consist of a 100-micrometre thick iron coating that is applied by plasma spraying. A map-controlled cooling module guarantees efficient thermal management in the 1.5 TSI and 1.0 TSI. An important component here is the exhaust manifold, which is integrated in the cylinder head: this contributes to the engine heating up quickly so that exhaust gas treatment starts early on.

RELATED ARTICLES

Most Popular

Recent Comments

Daniel Sherman Fernandez on Datsun Fairlady roadster needs a new home
Daniel Sherman Fernandez on Audi Exclusive A3 Carbon Edition
Daniel Sherman Fernandez on Proton X70 Odometer Issue Resolved
Lucy Aifete on Haval M4 Now Known As H1
Daniel Sherman Fernandez on Datsun Fairlady roadster needs a new home
F.R.D'AGUILAR & ASSOCIATES BUILDING CONTRACTORS. on Land Rover Discovery TD5 is a 7 seat bargain today used review
Emmanuel A.R. Strasser-King on Eicher Motors of India to Buy Ducati
Daniel Sherman Fernandez on Proton X70 Bumper Fixed In 2 days
NURUL HASNA SHAFIE on Proton X70 Bumper Fixed In 2 days
Daniel Sherman Fernandez on Used 1999 Suzuki Grand Vitara Review
Daniel Sherman Fernandez on Mazda CX-5 used buy review
Daniel Sherman Fernandez on BMW E28 M5, Never Forget This Super Sedan
Sugheilrash Manogaran on PROTON MAKEOVER PROGRAMME
Sugheilrash Manogaran on PROTON MAKEOVER PROGRAMME
Daniel Sherman Fernandez on What ‘toy’ car should you start with
Daniel Sherman Fernandez on From Rust To Rave. The Carcraft Way
Mohd fairul nasir on Seiko Prospex, For Divers Only
Daniel Sherman Fernandez on Proton X70 Bumper Fixed In 2 days
Daniel Sherman Fernandez on ALL-NEW NISSAN SERENA 2.0L S-HYBRID
Daniel Sherman Fernandez on Datsun Fairlady roadster needs a new home
Daniel Sherman Fernandez on From Rust To Rave. The Carcraft Way
Daniel Sherman Fernandez on How to Safely Buy and Sell Cars Online
Daniel Sherman Fernandez on MGB GT 1967, Could Be The Car For You
Daniel Sherman Fernandez on From Rust To Rave. The Carcraft Way
Muhamad Khushairi Bin Ali Badri on From Rust To Rave. The Carcraft Way
Daniel Sherman Fernandez on VOTY 2019//Hybrid – Nissan X-Trail
Daniel Sherman Fernandez on Meet the Omologato watch
Daniel Sherman Fernandez on Nissan Serena Gets Facelifted in Japan
Daniel Sherman Fernandez on The Proton X70 is a Triple Threat
Daniel Sherman Fernandez on Peugeot 208 Puretech in its purest form
Daniel Sherman Fernandez on Proton Iriz 2019 facelift test drive review
Daniel Sherman Fernandez on Over 21,000 road accidents this Hari Raya
kallayil sathyanathan nair on PLUS highway toll rates discount on the way
Daniel Sherman Fernandez on Why Did We Buy A USED Mitsubishi EVO 4
PUSAT TAYAR &BATERY CHYE LEE on Need spare parts for you used/gray Audi?
Daniel Sherman Fernandez on Range Rover Sport used car review
Daniel Sherman Fernandez on Why was the Toyota FJ Cruiser discontinued?
Thanaseelan Arumugam on Proton X70 Bumper Fixed In 2 days
Daniel Sherman Fernandez on Why do we need 164 Open AP Companies?  
Daniel Sherman Fernandez on Right way to restore a Land Rover Defender
Daniel Sherman Fernandez on Mazda6 With G-Vectoring Control Tested
Daniel Sherman Fernandez on Proton X70 Gets More than 10,000 Bookings
Daniel Sherman Fernandez on NSX Twins Spotted With Sex Appeal Intact
Daniel Sherman Fernandez on HONDA WR-V Could Arrive In Malaysia
Muhammad Akmal Shafiq bin Saharudin on Audi’s 2013 A6 Hybrid issues can be solved asap here
Daniel Sherman Fernandez on Perodua NEW SUV Arriving At KLIMS 2018
Muhammad arshad bin mustapaha on What MPV Should You Buy This Year?
Kuinosan on Above the law?
Kim Conrad Jorgensen on BMW 5-Series For 2017. Is This it?
Aleksandr Orlov on Fiat 131 Abarth Rare Find