The Mecachrome V634 engine (also known as Mecachrome Formula 2 V6) is a 3.4-litre,

turbocharged In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...

and naturally-aspirated, V6

racing In sport, racing is a competition of speed, in which competitors try to complete a given task in the shortest amount of time. Typically this involves traversing some distance, but it can be any other task involving speed to reach a specific goa ...

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gen ...

, designed, developed and produced by

Mecachrome Mecachrome SAS is a precision engineering company based in France that operates in the aerospace, motor racing, energy and defence sectors. History Mecachrome was founded in 1937 in Colombes, France. As a precision engineering company, Mecachrom ...

, and is used in the

FIA Formula 2 Championship The FIA Formula 2 Championship is a second-tier single-seater championship organised by the Fédération Internationale de l'Automobile (FIA). Held on racing circuits, the championship was introduced in 2017, following the rebranding of the lo ...

FIA Formula 3 Championship The FIA Formula 3 Championship is a third-tier international single-seater racing championship and organised by the Fédération Internationale de l'Automobile (FIA). The championship launched in 2019 as a feeder series for the FIA Formula 1 W ...

, and the

World Endurance Championship World Endurance Championship may refer to: * FIA World Endurance Championship, an auto racing series held since 2012 * World Sportscar Championship, an auto racing series which used the title World Endurance Championship from 1981 to 1985 * Endura ...

Formula 3 engine

First generation (second-generation overall)

The series will remain using the 3.4-litre V6 naturally-aspirated direct-injected engines supplied by

until at least the 2021 season due to FIA Formula 3 Championship not being interested in a turbocharged engine. The horsepower will be scaled down from . Mecachrome V634 F3 V6 engines were crated and shipped to all FIA Formula 3 Championship teams on a serial-number basis as determined by the FIA to ensure equality and fairness in distribution.

Fuel and lubricants components

All Formula 3 cars currently use ordinary unleaded racing gasoline as fuel (similar to commercial vehicle unleaded street gasoline), which has been the ''de facto'' standard in third tier single-seater formula racing since the introduction of

GP3 Series The GP3 Series, or GP3 for short, was a single-seater motor racing series launched in 2010 as a feeder series for the GP2 Series, introduced by GP2 organiser Bruno Michel. GP3 followed the entire European leg of the Formula One series and the ...

in 2010. Current Elf LMS 102 RON unleaded gasoline resembles ordinary unleaded gasoline but produces better mileage while being environmental-friendly and safer than other fuels. Since 2019,

Elf An elf () is a type of humanoid supernatural being in Germanic mythology and folklore. Elves appear especially in North Germanic mythology. They are subsequently mentioned in Snorri Sturluson's Icelandic Prose Edda. He distinguishes "ligh ...

exclusively continues providing the LMS 102 RON unleaded fuel and also Elf HTX 840 0W-40 lubricants for all FIA Formula 3 Championship cars.

Formula 2 engine

The V634 Turbo engine is a V6

direct injection four-stroke piston

Otto cycle An Otto cycle is an idealized thermodynamic cycle that describes the functioning of a typical spark ignition piston engine. It is the thermodynamic cycle most commonly found in automobile engines. The Otto cycle is a description of what happ ...

620 hp fuel-efficient engine developed and built by

, and maintained by Teos Engineering. The engine was unveiled in 2017 along with the new Dallara F2 2018 chassis. Dutch turbocharger company Van Der Lee Turbo Systems currently supplies the turbochargers for all FIA Formula 2 Championship engines. The

valve train A valvetrain or valve train is a mechanical system that controls the operation of the intake and exhaust valves in an internal combustion engine. The intake valves control the flow of air/fuel mixture (or air alone for direct-injected engines) ...

is a dual overhead camshaft configuration with four valves per cylinder. The crankshaft is made of alloy steel, with five main bearing caps. The pistons are forged aluminium alloy, while the connecting rods are machined alloy steel. The electronic engine management system is supplied by Magneti Marelli, firing a CDI ignition system. The engine lubrication is a dry-sump type, cooled by a single water pump. The all-new engine fuel delivery system is gasoline direct injection instead of traditional electronic indirect injection. The power output of all-new FIA Formula 2 engine was increased from .

will continue providing new FIA Formula 2 engines from the 2018 season and beyond. The Mecachrome V634 Turbo engine is rev limited down to 8,750 rpm and weighs up to including turbocharger. The firing ignition of the Mecachrome V634 Turbo engine is revolutionary digital inductive. The fuel-mass flow restrictor rate of the second-generation FIA Formula 2 Championship engine is roughly rated at . The Mecachrome V634 Turbo 3.4-litre single-turbocharged direct-injected

V6 engine A V6 engine is a six-cylinder piston engine where the cylinders share a common crankshaft and are arranged in a V configuration. The first V6 engines were designed and produced independently by Marmon Motor Car Company, Deutz Gasmotoren Fabrik ...

is an evolution of the GP3 engine, which is the solely supplied engine for the FIA Formula 2 Championship. With the addition of a single turbo, the engine underwent rigorous dyno testing, ahead of its racing debut. The Mecachrome V634 Turbo engines sells for up to €67,000 per unit by leasing and rebuilding. The current second-generation FIA Formula 2 engine allocation is limited to one per season and lasts up to after being rebuild. Mid-season engine changes, including during race weekend, is banned and may result in a grid penalty for the session.

Turbocharger

Turbochargers were introduced from the start of 2018 season. The turbo configuration is single-turbocharged and produces up to of boost pressure. Dutch turbocharger company Van Der Lee Turbo Systems currently supplies the turbochargers for all FIA Formula 2 Championship all-new engines using the MT134-50120 model. The turbocharger spin limit is 130,000 rpm but cannot exceed 125,000 rpm due to lower turbo boost pressure.

Fuel and lubricants components

All Formula 2 cars currently use ordinary unleaded racing gasoline as fuel (similar to commercial vehicle unleaded street gasoline), which has been the ''de facto'' standard in second tier single-seater formula racing since the introduction of GP2 Series in 2005. Current Elf LMS 102 RON unleaded gasoline resembles ordinary unleaded gasoline but produces better mileage while being environmental-friendly and safer than leaded fuels. Since 2005 GP2 Series season,

exclusively continues providing the LMS 102 RON unleaded fuel and also Elf HTX 840 0W-40 lubricants for all FIA Formula 2 Championship cars due to in fact of Mecachrome's long-term technical partnership with Elf.

Applications

Dallara GP3/16 The Dallara GP3/16 was the third generation of car developed by Italian manufacturer Dallara to run as the sole chassis for the GP3 Series, a feeder series for Formula One and the FIA Formula 2 Championship. The GP3/16 made its debut at the start ...

Dallara F3 2019 The Dallara F3 2019 is an open-wheel racing car developed by Italian manufacturer Dallara for use in the FIA Formula 3 Championship, a feeder series for Formula One. The F3 2019 is the first car used by the FIA Formula 3 Championship and was intr ...

Dallara F2 2018 The Dallara F2 2018 (originally known as the Dallara F2/18) is an open-wheel racing car developed by Italian manufacturer Dallara for use in the FIA Formula 2 Championship, a feeder-series for Formula One. The F2 2018 is the second car used by ...

Ginetta G60-LT-P1 The Ginetta G60-LT-P1 is a non-hybrid Le Mans Prototype built by Ginetta for use in the LMP1 category for the FIA World Endurance Championship, as well as the 24 Hours of Le Mans. The G60-LT-P1 had its competition debut at the 2018 24 Hours Of L ...

References

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External links

Mecachrome official website in French languageMecachrome official website in English languageFIA Formula 2 official websiteFIA Formula 3 official website
Engines by model FIA Formula 2 Championship V6 engines Gasoline engines by model