Technology

Concert to the beat of the EVO

New-generation, more environmentally friendly engines that increase driving comfort are humming more and more often under ŠKODA car bonnets

V

he improved powertrain, which the Mladá Boleslav carmaker is gradually integrating into its models, primarily reduce fuel consumption and emissions. At the same time, they seem more cultivated and pleasant. The three letters in the name of the new units (EVO) indicate an evolution of the existing engines that ŠKODA AUTO has so far successfully used under the bonnets of its cars. However, the jump is often very significant.

The latest addition is the three-cylinder 1.0 TSI EVO, which customers have been able to choose for the new OCTAVIA model generation since September this year. Subsequently, this unit was added to the offer of SCALA, KAMIQ and KAROQ models. In addition to the four-cylinder 1.5 TSI EVO, the 2.0 TDI EVO diesel and the 1.0 MPI EVO multi-point injection three-cylinder engine have also made it under the bonnet. On this double page, we bring you an up-to-date overview of the EVO family engines on offer.  ED

Petrol

EA211 EVO TSI

1.0 TSI EVO (70/81 kW)

OCTAVIA,
OCTAVIA e-TEC (81 kW)
KAMIQ (70/81 kW)
SCALA (70/81 kW)

KAROQ (81 kW)

1.5 TSI EVO (110 kW)

OCTAVIA, OCTAVIA e-TEC, KODIAQ, KAROQ, KAMIQ, SCALA

The four-cylinder 1.5 TSI engine is a pioneer among the TSI engines in the EVO EA211 family of engines. In 2018, it made it under the bonnet of the previous generation of the OCTAVIA model. Its speciality is the ACT (active cylinder technology) function, which automatically disconnects the two middle cylinders under light loads to reduce fuel consumption. On a technical level, the 1.0 TSI EVO three-cylinder petrol engine is very interesting and now operates in the economical Miller combustion cycle. With this cycle, its suction valves close already during the suction piston stroke, which reduces the effective compression ratio, but the expansion ratio remains unchanged. In this way, the engine achieves greater efficiency. The engine features its turbocharger with the variable geometry of its distribution vanes, which makes maximum torque available even at lower engine speeds. The functional surface of the cylinders of both EVO petrol engines is modified by a plasma-applied surface layer that reduces friction to increase the engine’s mechanical efficiency. The 1.0 TSI EVO and 1.5 TSI EVO engines are also available in the mild-hybrid OCTAVIA e-TEC, whose engine is supported by its 48 V battery-powered starter-generator.

Benzin

EA211 EVO MPI 

1,0 MPI EVO (48 / 59 kW)

Upcoming fourth-generation FABIA

The 1.0 MPI engine is another fixed star in the ŠKODA brand’s offer. Its EVO version arrived in 2018, and its first steps led to the VW Polo and Seat Ibiza models. The new generation of the FABIA model will feature this engine as well. The engine also uses its electronically controlled dual-cooling circuit and continuously regulated oil pump or new pistons, whose rings and crankshaft bearings further reduce friction in the engine. The engine uses the Atkinson cycle, during which the suction valves only close during the compression piston stroke, which pushes part of the mixture extracted from the cylinder back into the suction line. This reduces the effective compression ratio, but the high expansion ratio value (12) given by the cylinder unit’s geometry remains unchanged. As a result, the engine is more efficient and burns less fuel. The development of this unit is fully in the competence of Technical Development in Česaná and is manufactured in Mladá Boleslav.

Diesel

EA288 EVO TDI

2,0 TDI EVO (85 / 90 / 110/ 147 kW)

SUPERB (90/110/147 kW)
OCTAVIA (85/110/147 kW)
KODIAQ (110/147 kW)
KAROQ (85/110 kW)

Last autumn, the 2.0 TDI EVO engine in the SUPERB model launched the offensive in the field of EVO diesel engines. The brand’s facelifted flagship first arrived in its 110 kW variant, but today, the 2.0 TDI EVO variant is about to be installed in ŠKODA cars with an output of 85 to 147 kW as well. While developing their new EA288 EVO series, the designers primarily strove to reduce emissions, improve the torque curve and the engine’s response to the gas pedal and reduce the engine’s noise and weight. Thanks to the application of Twin-Dosing technology for selective catalytic reduction in exhaust gas cleaning, they managed to reduce nitrogen oxide emissions to well below the standard-imposed requirements. At the same time, the engine already features high torque values at low speeds. Its fuel consumption is up to 20 percent lower than with similar petrol engines. This is also aided by the continuously variable oil pressure control and electrically controlled turbocharger with variable blade geometry, as well as active cooling circuit control, including a detachable wat r pump or common rail injection with pressure of up to 2,200 bar. The engine has two design variants: Its 85 to 110 kW versions feature blocks of cylinders made of grey cast iron and steel pistons, while the 147 kW variant uses a block of aluminium cylinders and pistons.

Did you know...

...  that the two-litre petrol engine of the EA888 EVO series is approaching the OCTAVIA RS model as well? It is being developed in compliance with strict emission limits and provides our customers with improved acoustics and reduced vibrations, among others.