Maserati Nettuno engine

The engine, an integral part of the renewal of the Modena brand, was born from the need to equip Maserati with a new generation engine, replacing the Ferrari-Maserati F136 V8 that previously equipped the cars of the trident. Starting with the MC20, the engine replaced the V8 F136 in Maserati's engine range. The new engine family is characterized by a displacement of 3.0{{Nbsp}}liters,{{cite web |last1=Tatarevic |first1=Bozi |date=2 July 2020 |title=Maserati's All-New Twin-Turbo V-6 Actually Shares a Ton of Parts with Ferrari and Alfa |url=https://www.roadandtrack.com/new-cars/car-technology/a33078911/maserati-nettuno-v6-part-sharing/ |website=Road & Track |language=en}} with a maximum power output ranging between {{cvt|490|and|640|PS|kW PS hp|0|order=out}} in the versions approved for road use, and can reach {{cvt|740|PS|kW PS hp|0|order=out}} in the configurations intended for track use.

The engine represents a profound evolution of the Alfa Romeo 690T, in turn partly derived from the V8 Ferrari F154. The engine maintains the 6 cylinders with a 90-degree angle between the banks, firing order of 1-6-3-4-2-5, and a stroke of 82 mm from the 690T. The bore, however, was increased to 88 mm, thus reaching a total displacement of 3.0{{Nbsp}}liters. Similarly, the engine is equipped with two turbochargers mounted outside the banks, a configuration that realizes the so-called cold vee, as opposed to hot vee.

Characterized by a high compression ratio of 11 to 1, the engine is able to deliver specific powers of more than 200 hp/litre and maximum torque values above {{cvt|700|Nm|lbft}}.

The engine is equipped with an innovative pre-chamber combustion system, called {{Interlanguage link|turbulent jet ignition|it}} (TJI). In the pre-chamber takes place the injection and combustion of a small amount of mixture; from this combustion a turbulent jet is generated that, through special holes, reaches the main chamber, triggering the actual combustion. This process creates a very large number of ignition points in the main chamber, significantly increasing the speed of flame propagation. Thanks to this optimized and more homogeneous combustion, it is possible to use lean mixtures in the main chamber and high compression ratios, improving engine efficiency while reducing emissions. This engine is also equipped with a dual ignition spark plug system, called Maserati Twin Combustion (MTC). The first spark plug is placed inside the prechamber and is used to trigger the first combustion. The second spark plug, on the other hand, is placed sideways in the main chamber and intervenes at partial load, when the turbulent jet generated in the prechamber may find it difficult to reach the main chamber.{{Cite web |last=Covini |first=Gianluca |date=2020-07-01 |title=Nettuno, il nuovo motore 100% Maserati |url=https://www.autotecnica.org/nettuno-il-nuovo-motore-100-maserati/ |website=Auto Tecnica |language=it-IT}} This is the first application of this technology to a mass-produced engine.

The engine is also equipped with a partial cylinder deactivation system, which at low load allows the operation of only three cylinders, excluding the entire right bank. This system is particularly innovative, as it is not only interrupting the injection and ignition, but also deactivates the intake and exhaust cycles. In this way, the resistances associated with the movement of the pistons in cylinders where there is no combustion is significantly reduced.{{Cite web |last=Paiola |first=Alessandro |date=September 9, 2020 |title=Nettuno, tutti i segreti del motore Made in Modena della Maserati MC20 |url=https://it.motor1.com/news/443216/maserati-mc20-motore-nettuno-segreti/ |website=Motor1.com |language=it}}

The engine was conceived and designed in Modena, between the workshops of the Tridente house, the Maserati Innovation Lab in Via Emilia Ovest, and the workshops in Via delle Nazioni, the historic headquarters of the {{Interlanguage link|Maserati Corse|it}}. The development and production are instead entrusted to the Polo Motori of the Ciro Menotti plant in Viale Ciro Menotti, the same production complex where the Maserati MC20 is also assembled.{{Cite news |last=Maserati |title=Factory Tour |url=https://www.maserati.com/us/en/brand/experiences/factory-tour |url-status=live |archive-url=http://web.archive.org/web/20241008085320/https://www.maserati.com/it/it/brand/experiences/factory-tour |archive-date=2024-10-08 |access-date=2025-05-12 |language=it}} The project was led by Matteo Valentini, supported by a dedicated team created specifically.{{Cite web |last=Nebbia |first=Cesare |date=2020-09-15 |title=V6 Nettuno: gli highlights delle sue innovazioni |url=https://www.veloce.it/storie/v6-nettuno-gli-highlights-delle-sue-innovazioni-30513 |website=Veloce |language=it-IT}} The engine is composed of about 1,300 components, and its assembly, while being artisanal, follows strict parameters controlled by computerized systems.{{Cite web |last=Salvatore |first=Michele |date=February 10, 2021 |title=Maserati Nettuno, ecco come nasce il V6 del Tridente |url=https://www.auto.it/news/news/2021/02/10-3900946/maserati_nettuno_ecco_come_nasce_il_v6_del_tridente/ |url-status=dead |archive-url=https://web.archive.org/web/20210210152258/https://www.auto.it/news/news/2021/02/10-3900946/maserati_nettuno_ecco_come_nasce_il_v6_del_tridente/ |archive-date=2021-02-10 |website=auto.it}}

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Category:Gasoline engines by model

Category:V6 engines

Category:Maserati engines