The PSA ES/L engine is a V6

petrol engine A petrol engine (gasoline engine in American and Canadian English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as liquefied petroleum gas and ethanol blends ...

used in automotive applications. It was co-developed by the

PSA Group Peugeot S.A., trading as Groupe PSA () (formerly PSA Peugeot Citroën from 1991 to 2016) was a French Multinational corporation, multinational Automotive industry, automotive manufacturing company which produced automobiles and motorcycles unde ...

(

Peugeot Peugeot (, , ) is a French automobile brand owned by Stellantis. The family business that preceded the current Peugeot companies was established in 1810, making it the oldest car company in the world. On 20 November 1858, Émile Peugeot applie ...

and

Citroën Citroën ()The double-dot diacritic over the 'e' is a diaeresis () indicating the two vowels are sounded separately, and not as a diphthong. is a French automobile brand. The "Automobiles Citroën" manufacturing company was founded on 4 June 19 ...

) and

Renault Renault S.A., commonly referred to as Groupe Renault ( , , , also known as the Renault Group in English), is a French Multinational corporation, multinational Automotive industry, automobile manufacturer established in 1899. The company curr ...

to replace the outdated

V6 PRV engine The V6 PRV engine is an overhead cam V6 automobile engine designed and manufactured by the company "Française de Mécanique" for PRV, an alliance of Peugeot, Renault and Volvo Cars. Sold from 1974 to 1998, it was produced in four displacement ...

. It was introduced in 1997 with the

Peugeot 406 The Peugeot 406 is a large family car that was produced by French automaker Peugeot between 1995 and 2004. Available in saloon, estate and coupé bodystyles with a choice of petrol or turbodiesel engines, the 406 replaced the Peugeot 405 in Peu ...

Coupé A coupe or coupé (, ) is a passenger car with a sloping or truncated rear roofline and typically with two doors. The term ''coupé'' was first applied to horse-drawn carriages for two passengers without rear-facing seats. It comes from the Fr ...

. It is designed and manufactured by the company "Française de Mécanique" for PSA and Renault. In PSA, the engine is known as the ES engine, in Renaults, the engine is known as the L engine. Unlike the PRV V6, which was a 90° engine because it was developed from a V8 project, the ES/L has a traditional 60° V-angle. It is constructed entirely in

aluminum Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

, and available only in

DOHC An overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combus ...

24-valve format. Its sole iteration, the ES9 (PSA) or L7X (Renault), has a displacement of , slightly less than the 3.0 L variant of the PRV. Bore and

stroke Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...

is . A 3.3 L version was initially planned as well, but did not see production due to decreasing demand in V6

s in Europe and Renault's switch to

Nissan is a Japanese multinational Automotive industry, automobile manufacturer headquartered in Yokohama, Kanagawa, Japan. The company sells its vehicles under the ''Nissan'' and ''Infiniti'' brands, and formerly the ''Datsun'' brand, with in-house ...

-sourced V6 after its alliance with the Japanese carmaker. Initially, the ESL produced in accordance with German and French insurance category limits in force at the time for engines under 3 litres. (The BMW 2.8 and Audi 2.8 produced the same figure circa ) In 2000,

Porsche Dr. Ing. h.c. F. Porsche AG, usually shortened to Porsche (; see below), is a German automobile manufacturer specializing in luxury, high-performance sports cars, SUVs and sedans, headquartered in Stuttgart, Baden-Württemberg, Germany. Th ...

retuned the Peugeot/Citroën version of the engine introducing

variable valve timing Variable valve timing (VVT) is the process of altering the timing of a Poppet valve, valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combina ...

on the intake

camshaft A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion. Camshafts are used in piston engines (to operate the intake and exhaust valves), mechanically controlled ignition syst ...

s varying between 0 and 40 degrees, improving

fuel consumption A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy but ...

, low engine speed flexibility for the introduction of the

Peugeot 607 The Peugeot 607 is an executive car produced by the French manufacturer Peugeot from September 1999 to June 2010. The 607, along with the smaller 407, were superseded by the 508 in March 2011. History The 607 was launched in October 1999, to ...

and

Citroën C5 The Citroën C5 is a large family car produced by the French manufacturer Citroën between 2000 and 2018 in France, and between 2008 and 2022 in China, over two generations. It replaced the Citroën Xantia, in the large family car class, and i ...

. This iteration, called ES9 J4S, can now achieve . In 2005, Peugeot/Citroën slightly upgraded the power to . This version was not used by Renault who was by then focusing on Nissan-developed V6. In 2000,

Tom Walkinshaw Racing Tom Walkinshaw Racing (TWR) was a motor racing team and engineering firm founded in 1976, in Kidlington, near Oxford, England, by touring car racer Tom Walkinshaw. The company initially handled privateer work before entering works touring car ...

created a competition version for use in the Renault Clio V6. It could achieve a maximum of in racing trim, with a version detuned to for the road car. The road version's power was improved to by

Renault Sport Renault Sport () or Renaultsport, was a motorsport, performance and special vehicles division for Renault-badged cars and later a sub-badge of Renault cars managed by Automobiles Alpine, Alpine. The first Renault Sport was officially established ...

in 2004.

ES9/L7X

The ES/L V6 has been used in a variety of cars from Citroën, Peugeot and Renault in the executive and luxury segments, namely the

Citroën XM The Citroën XM is an executive car manufactured and marketed by Citroën from 1989 to 2000. Voted 1990 European Car of the Year for its contributions in terms of design and technological innovation, it was the first production automobile in the w ...

Citroën Xantia The Citroën Xantia (pronounced "Zan–ti–a") is a large family car (D-segment, D) produced by the French automaker Citroën, and designed by Gruppo Bertone, Bertone. Presented to the press in December 1992, the car was produced between 1992 a ...

, Citroën C8 and

Citroën C6 The Citroën C6 is an executive car ( E) produced by the French car maker Citroën from 2005 to 2012. Production started up again in China in 2016, before ending in 2023. The Citroën C6 was inspired by the Citroën C6 Lignage concept car with ...

; the Peugeot

406 __NOTOC__ Year 406 ( CDVI) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Arcadius and Probus (or, less frequently, year 1159 ''Ab urbe condita''). The denomination 406 fo ...

407 __NOTOC__ Year 407 ( CDVII) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Honorius and Theodosius (or, less frequently, year 1160 ''Ab urbe condita''). The denominatio ...

605 Year 605 ( DCV) was a common year starting on Friday of the Julian calendar. The denomination 605 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming yea ...

and

607 __NOTOC__ Year 607 ( DCVII) was a common year starting on Sunday of the Julian calendar. The denomination 607 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe f ...

; and the

Renault Laguna The Renault Laguna is a large family car that was manufactured and marketed by Renault for 21 years in three body styles: hatchback, coupé, and estate. The first generation Laguna was launched in 1994, the second generation was introduced in 20 ...

(Mk.I and II),

Espace Espace may refer to: *ESPACE, a complexity class in computational complexity theory *Espace musique, a Canadian radio service *Espace 2, a Swiss radio station *Radio Espace, a French radio station *Espace Group, a French media company *Group Espace ...

(Mk.III),

Renault Avantime The Renault Avantime is a grand tourer marketed by the France, French manufacturer Renault, designed and manufactured by Matra, between 2001 and 2003. As a three-box styling, one-box design without Pillar (car), B-pillars, styled by Patrick L ...

Renault Safrane The Renault Safrane is an executive car (E-segment in Europe) designed and built by the France, French manufacturer Renault from 1992 until 2000. Throughout its production it remained the most expensive and most luxurious Renault available, altho ...

and Clio V6. It was also modified by Venturi into a

twin-turbo Twin-turbo is a type of turbo layout in which two turbochargers are used to compress the intake fuel/air mixture (or intake air, in the case of a direct-injection engine). The most common layout features two identical or mirrored turbochargers in ...

in the last of their Atlantique 300 Bi-turbo cars. Unlike the PRV, it didn't have much of a career in motorsport, next to the Renault Sport Clio V6 Eurocup the engine was also used by

Courage Courage (also called bravery, valour ( British and Commonwealth English), or valor (American English)) is the choice and willingness to confront agony, pain, danger, uncertainty, or intimidation. Valor is courage or bravery, especially in ...

in the C52 and C60, as a 3.2 L

bi-turbo Twin-turbo is a type of turbo layout in which two turbochargers are used to compress the intake fuel/air mixture (or intake air, in the case of a Direct fuel injection, direct-injection engine). The most common layout features two identical or mir ...

engine, with a max output of . The engines are built by

Sodemo Sodemo Moteurs is a motor vehicle engine tuning company based in Magny-Cours, near Nevers, France, owned by Guillaume Maillard. Formed in 1981, and based within the ground of the Circuit de Nevers Magny-Cours, Sodemo is most associated with the tun ...

PSA

With Renault shifting to the

Nissan VQ engine The VQ is a family of V6 automobile petrol engines developed by Nissan Motor Co., Ltd., Nissan and produced in displacements varying from 2.0 L to 4.0 L. Designed to replace the Nissan VG engine, VG series, the all-aluminium Multi-valve, ...

3.5 L V6, PSA became the sole user of the ES until 2010 when the requirements of

Euro 5 The European emission standards are vehicle emission standards that regulate pollution from the use of new land surface vehicles sold in the European Union and European Economic Area member states and the United Kingdom, and ships in European ...

emission regulations began; the

Euro 4 The European emission standards are vehicle emission standards that regulate pollution from the use of new land surface vehicles sold in the European Union and European Economic Area member states and the United Kingdom, and ships in European ...

-only ES engine was no longer available in Europe and replaced by The

turbocharged In an internal combustion engine, a turbocharger (also known as a turbo or a turbosupercharger) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake air, forcing more air into the ...

Straight-4 A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The majority of automotive four-cylinder engines use a straight-four layout ( ...

Prince engine Prince is the codename for a family of straight-four 16-valve all-aluminium gasoline engines with variable valve lift and variable valve timing developed by BMW and PSA Peugeot Citroën. It is a compact engine family of 1.4–1.6 L in displa ...

. Note: All 24-valve with

catalytic converter A catalytic converter part is an vehicle emissions control, exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalysis, catalyzing a redox ...

References

Sources

Guide des moteurs Peugeot Citroën
(in French)

Française de Mécanique engines ES L V6 engines {{PSA Peugeot Citroën Gasoline engines by model

ES9/L7X

PSA

See also

References

Sources