List of Volkswagen Group petrol engines
The spark-ignition petrol engines listed below operate on the four-stroke cycle, and unless stated otherwise, use a wet sump lubrication system, and are water-cooled.
The numbers denoting a particular Entwicklungsauftrag don't follow a strictly chronological scheme but have generally increased over time.
Compared to its predecessor, the EA211 series is significantly more compact, with installation length 50 mm (2.0 in) shorter, thus offering more interior space.
Just as in the diesels, the petrol engines are now mounted with the exhaust side facing backwards and tilted at an angle of 12 degrees.
In addition the connecting rod bearing journals are now hollow-drilled and pistons now come with flat bottoms, all of them optimized for lower weight.
For 2012, these newly developed generation of modern petrol engines are manufactured at the Škoda Auto plant in Mladá Boleslav.
This range will eventually be superseded by the evolved version with heavy changes EA888 project, introduced with the 1.8 TSI/TFSI below, but the EA113 still remains in production.
The turbocharger assumes full effectiveness at middle revs, and the engine map disengages the clutch-controlled supercharger at a maximum upper limit of 3,500 rpm; the supercharger will then be bypassed once the turbocharger spools up and reaches sufficient speed to provide adequate boost in the upper rev-ranges.
The engine has reduced frictional losses, optimised camshafts, new intake ports, and new high-pressure injector valves.
It is also 14 kg (31 lb) lighter than the 125 kW model, in order to improve fuel economy and reduce emissions.
Wholly created and developed by AUDI AG, this version is a 1.8-litre 20-valve turbocharged engine built in Wolfsburg, Germany; Győr, Hungary; and Puebla, Mexico.
Output varies based on internal component selection, turbocharger, and engine control unit (ECU) software.
This engine is also used in a very high state of tune in the one-make Formula Palmer Audi (FPA) open-wheeled auto racing series.
Based entirely on road-car production engines and prepared and built by Mountune Racing, it only differs by utilising a Pi Research Pectel electronic fuel injection and a water-cooled Garrett T34 turbocharger with closed-loop boost control.
It features some of the latest engine technology such as direct fuel injection, sintered camshaft lobes, thin-walled engine block, variable valve timing and lift for intake and exhaust valves, downstream oxygen sensors, exhaust manifold integrated into the cylinder head, exhaust gas recirculation and cooling, distributors coil-on-plug ignition, lightweight engine internals, slide valve thermostat (some variants), and the addition of port fuel injection to aid low load fuel consumption and cold start emissions.
The port fuel injection also aids in reducing the potential carbon deposits that can occur in direct-injected engines.
Still, VAG has made numerous enhancements to their engine designs such as the positive crankcase ventilation, repositioning injectors and more to lessen the potential that carbon deposits accumulate on intake valves.
This engine is a variant of the EA888, producing 261 hp and 295 lb-ft. It’s paired with a Doppelkupplungsgetriebe, which means PDK (dual-clutch transmission) and is Porsche's version of the DSG found in VAG vehicles.
This combination of the EA888 engine and PDK transmission in the Porsche Macan showcases the versatility of these technologies and their ability to enhance performance across different vehicle models within the Volkswagen Group.
This latest EA888 family of straight-four 16-valve internal combustion engines with variable valve timing is anticipated to be an eventual complete replacement of the EA113 range.
Grey cast iron (GJL 250) remains the choice material for the cylinder block and crankcase, due to its inherent good acoustic dampening properties.
This all-new EA888 range is notable for utilising simplex roller chains to drive the two overhead camshafts, instead of the former engines' toothed-rubber timing belt.
Grainger & Worrall was reported to have cast 50 CGI cylinder blocks for over 12 months as of October 2013, based on the EA888 gasoline engine.
The rectification that is carried out is to remove the engine, replace the Piston & Connecting Rod assemblies in all four cylinders with modified units, head gasket and so forth.
If in the case of this component failing, the chain would jump, allowing the pistons and valves to potentially hit each other, causing expensive and possibly terminal engine damage.
The coolant pump / thermostat unit is located under the intake manifold regardless of generation, model year or application.
The EA390 was originally a 3.2L cast aluminium block that was released in 2001 in the European markets, and was used across various Volkswagen, Audi and Porsche vehicles.
This allows the turbocharger(s) to produce boost pressure more quickly as the path the exhaust gases travel is much reduced.
It has also been used in a 600 hp (450 kW; 610 PS) form aboard the Volkswagen W12 prototype sports car to establish a 24-hour record of 323 km/h (200.7 mph) in 2002 at the Nardò Ring in Italy.
It would mostly share the same technical specifications with its turbocharged 6.0-liter predecessor, other than the fact that it was modified to meet new WLTP emission standards.
