Alfa Romeo JTS engine

Last updated
Alfa Romeo JTS engine
Alfa Romeo Brera V6 engine.JPG
Overview
Manufacturer Fiat Auto (2002-2005)
Fiat Powertrain Technologies (2005-2011)
Production20022011
Layout
Configuration Straight-4, 60° V6
Displacement 2.0 L (1,970 cc)
1.9 L (1,859 cc)
2.2 L (2,198 cc)
3.2 L (3,195 cc)
Cylinder bore 83 mm (3.27 in)
86 mm (3.39 in)
89 mm (3.50 in)
Piston stroke 91 mm (3.6 in)
80 mm (3.1 in)
94.6 mm (3.72 in)
85.6 mm (3.37 in)
Cylinder block materialaluminium alloy
cast-iron (2.0 JTS)
Cylinder head materialAluminium alloy
Valvetrain DOHC 4-valve with VVT
Compression ratio 11.25:1
Combustion
Fuel system Direct injection
Fuel type Petrol
Cooling system Water-cooled
Output
Power output 160–260 PS (118–191 kW; 158–256 hp)
Torque output 206–322 N⋅m (152–237 lb⋅ft)
Dimensions
Dry weight 168 kg (370 lb) (3.6 V6 High Feature engine) [1]
Chronology
Predecessor Alfa Romeo Twin Spark
Alfa Romeo V6 engine
Successor FCA Global Medium Engine (I4)
Alfa Romeo 690T engine (V6)

The JTS engine (Jet Thrust Stoichiometric) is a gasoline direct injection engine produced by Alfa Romeo. It exists in two forms, straight-4 and V6, and was introduced into the Alfa lineup in 2002. [2]

Contents

Four-cylinder

2.0

2.0 JTS engine. JTS engine.JPG
2.0 JTS engine.

The JTS engine debuted in 2002 in the Alfa Romeo 156. [3] The engine was based on the 2.0 Twin Spark (itself a variant of the Pratola Serra engine family), replacing Twin Spark with direct injection, dubbed "Jet Thrust Stoichiometric". This improved power from 114 kW (155 PS; 153 hp) to 121 kW (165 PS; 162 hp), but more importantly, torque climbed from 187 N⋅m (138 lb⋅ft) to 206 N⋅m (152 lb⋅ft). In 2003, this engine was introduced to the GTV/Spider coupé and roadster and it was fitted to the GT from launch. In spite of its benefits to power, torque and economy, the JTS was not used in the smaller 147 or the larger 166, and much less in other models from the Fiat Group. This was allegedly because the JTS engine cost a lot more to produce than the Twin Spark.

Applications:

1.9

It was only in 2005, with the arrival of the 159, that more variants of the JTS were produced. The 2.0 JTS gave way to a 1.9 L variant with 160 PS (118 kW; 158 hp) and a 2.2 L version with 185 PS (136 kW; 182 hp). The 1.9 JTS and 2.2 JTS form part of a new engine family and are completely different from the 2.0 JTS. Both 1.9 L and 2.2 L have chain driven camshafts and variable valve timing on both inlet and exhaust camshafts. Both 1.9 and 2.2 JTS engine blocks were supplied by GM to the Fiat group and belong to the GM Ecotec engine family. Both models are mapped to either a six-speed manual gearbox plus a reverse gear, or a Formula One inspired sequential gearbox also having six gears and reverse.

Applications:

2.2

2.2 JTS engine. Alfa Romeo Spider 2,2 JTS 2007 engine TCE.jpg
2.2 JTS engine.

With the arrival of 159, a 2.2 JTS was also introduced. The engine block is sourced from GM (Ecotec L61).

Applications:

Six-cylinder

3.2

The JTS direct injection system was first used in a V6 engine in 2005 with the introduction of the Alfa 159 and Brera. This is not related to the Alfa Romeo V6 engine, but is instead a derivation of the GM High Feature engine; built in Australia by GM Holden. While it retains the High Feature engine's 89 mm × 85.6 mm (3.50 in × 3.37 in) bore x stroke and chain driven camshafts, it is modified by Alfa for their performance, fuel economy and sound characteristics. These modifications include: "TwinPhaser" variable valve timing (cam-phasing on both inlet and exhaust cams, thus the name), gasoline direct injection and a higher compression ratio of 11.25:1. It also operates with a lean burn system up to about 1500 rpm, [4] as on many other engines from the company and is capable of generating 191 kW (260 PS; 256 hp), [5] a number matching the larger LY7 3.6 L variant used by GM. Alfa Romeo stopped using the V6 JTS engine in 2010.

Applications:

Related Research Articles

<span class="mw-page-title-main">Ford Duratorq engine</span> Marketing name of a range of Ford diesel engines first introduced in 2000

The Ford Duratorq engine, commonly referred to as Duratorq, is the marketing name of a range of Ford diesel engines introduced in 2000. The larger capacity 5-cylinder units use the Power Stroke branding when installed in North American-market vehicles. The first design, codenamed "Puma" during its development, replaced the older Endura-D unit which had been around since 2000. Commercial versions of the York unit replaced Ford's older type unit used in the Transit, and many other manufacturers' vehicles - most notably the London Taxi and in the Land Rover Defender. Other unrelated units in this range have been developed by Ford and PSA. The TDCi Duratorq engines are available in vehicles from Ford, Jaguar, Land Rover, Volvo and Mazda. A new EcoBlue diesel engine range, originally codenamed "Panther" and planned to be available in 2.0- and 1.5-litre variants, will progressively replace the Duratorq engines from 2018.

The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 1.2 and 2.5 litres. Confusingly, the Ecotec name was also applied to both the Buick V6 Engine when used in Holden Vehicles, as well as the final DOHC derivatives of the previous GM Family II engine; the architecture was substantially re-engineered for this new Ecotec application produced since 2000. This engine family replaced the GM Family II engine, the GM 122 engine, the Saab H engine, and the Quad 4 engine. It is manufactured in multiple locations, to include Spring Hill Manufacturing, in Spring Hill, Tennessee, with engine blocks and cylinder heads cast at Saginaw Metal Casting Operations in Saginaw, Michigan.

<span class="mw-page-title-main">General Motors LS-based small-block engine</span> Family of V8 and V6 engines

The General Motors LS-based small-block engines are a family of V8 and offshoot V6 engines designed and manufactured by American automotive company General Motors. First introduced in 1997, the family is a continuation of the earlier first- and second-generation Chevrolet small-block engine, of which over 100 million have been produced altogether, and is also considered to be one of the most popular V8 engines ever. Spanning three generations, a new, sixth generation is expected to enter production soon. Various small-block V8s were and still are available as crate engines.

<span class="mw-page-title-main">General Motors 60° V6 engine</span> Reciprocating internal combustion engine

The General Motors 60° V6 engine family is a series of 60° V6 engines produced for both longitudinal and transverse applications. All of these engines are 12-valve cam-in-block or overhead valve engines, except for the LQ1 which uses 24 valves driven by dual overhead cams. These engines vary in displacement between 2.8 and 3.4 litres and have a cast-iron block and either cast-iron or aluminum heads. Production of these engines began in 1980 and ended in 2005 in the U.S., with production continued in China until 2010. This engine family was the basis for the GM High Value engine family. These engines have also been referred to as the X engines as they were first used in the X-body cars.

<span class="mw-page-title-main">Jaguar AJ-V8 engine</span> Reciprocating internal combustion engine

The Jaguar AJ-8 is a compact DOHC V8 piston engine used in many Jaguar vehicles. It was the fourth new engine type in the history of the company. It was an in house design with work beginning before Ford's purchase of the company. In 1997 it replaced both designs previously available on Jaguar cars: the straight-6 Jaguar AJ6 engine, and the Jaguar V12 engine. It remained the only engine type available on Jaguar until 1999 with the launch of the S-Type, when the Jaguar AJ-V6 engine was added to the list. The AJ-V8 is available in displacements ranging from 3.2L to 5.0L, and a supercharged version is also produced. Ford Motor Company also used this engine in other cars, including the Lincoln LS and the 2002–2005 Ford Thunderbird, as well as in several Land Rovers, and the Aston Martin V8 Vantage.

<span class="mw-page-title-main">Jaguar AJ-V6 engine</span> Car engine

The Jaguar AJ-V6 engine is a piston engine based on the Ford Duratec V6 engine. The Duratec V6 was originally a Porsche design, purchased by the Ford Motor Company with Cosworth finishing the engineering to suit Ford's needs. One notable addition is the use of variable valve timing, a feature also shared with Mazda's version of the engine. It is available in 2.1 L (2,099 cc), 2.5 L (2,495 cc) and 3.0 L (2,967 cc) displacements.

<span class="mw-page-title-main">GM High Feature engine</span> Reciprocating internal combustion engine

The GM High Feature engine is a family of modern DOHC V6 engines produced by General Motors. The series was introduced in 2004 with the Cadillac CTS and the Holden Commodore (VZ).

<span class="mw-page-title-main">Ford Cologne V6 engine</span> Reciprocating internal combustion engine

The Ford Cologne V6 is a series of 60° cast iron block V6 engines produced by the Ford Motor Company from 1962 to 2011 in displacements between 1.8 L; 110.6 cu in (1,812 cc) and 4.0 L; 244.6 cu in (4,009 cc). Originally, the Cologne V6 was installed in vehicles intended for Germany and Continental Europe, while the unrelated British Essex V6 was used in cars for the British market. Later, the Cologne V6 largely replaced the Essex V6 for British-market vehicles. These engines were also used in the United States, especially in compact trucks.

<span class="mw-page-title-main">Nissan VQ engine</span> Reciprocating internal combustion engine

The VQ is a family of V6 automobile petrol engines developed by Nissan and produced in displacements varying from 2.0 L to 4.0 L. Designed to replace the VG series, the all-aluminium 4-valve per cylinder DOHC design debuted with Nissan's EGI/ECCS sequential multi-point fuel injection (MPFI) system. Changes from the VG engine include switching to a timing chain from a timing belt, and relocating the water pump from the outside of the engine to inside the timing cover where the pump is driven by the timing chain. Later versions featured various improvements, such as variable valve timing, and NEO-Di designated VQ engines replace MPFI with direct fuel injection.

<span class="mw-page-title-main">General Motors 54° V6 engine</span> Reciprocating internal combustion engine

General Motors' Opel subsidiary in Europe designed a compact V6 engine with an unusual 54° vee angle. It was an iron block/aluminum head DOHC design with four valves per cylinder. All 54° engines were assembled at Ellesmere Port in England.

<span class="mw-page-title-main">General Motors 122 engine</span> Reciprocating internal combustion engine

The 122 engine was designed by Chevrolet and was used in a wide array of General Motors vehicles. The 122 was similar to the first two generations of the General Motors 60° V6 engine; sharing cylinder bore diameters and some parts. The 122 was available in the U.S. beginning in 1982 for the GM J platform compact cars and S-series trucks.

The Ferrari Dino engine is a line of mechanically similar V6 and V8 engines produced by Ferrari for about 40 years from the late 1950s into the early 2000s.

<span class="mw-page-title-main">Honda J engine</span> Reciprocating internal combustion engine

The J-series is Honda's fourth production V6 engine family introduced in 1996, after the C-series, which consisted of three dissimilar versions. The J-series engine was designed in the United States by Honda engineers. It is built at Honda's Anna, Ohio, and Lincoln, Alabama, engine plants.

The Circle L is an automobile engine produced by GM Powertrain Poland in Poland. It is a 1.7 L; 102.9 cu in (1,686 cc) inline-four 16-valve turbocharged diesel engine originally designed by Isuzu but now owned by General Motors. The engine was produced in Europe by General Motors for use in the Opel, Vauxhall and Chevrolet vehicles and by Honda for use in the Civic compact car.

<span class="mw-page-title-main">Alfa Romeo Brera and Spider</span> Italian sports car series

The Alfa Romeo Brera and the Alfa Romeo Spider are mid-size sports cars using the GM/Fiat Premium platform, manufactured by Pininfarina and marketed by Alfa Romeo as a 2+2 coupé and roadster respectively.

<span class="mw-page-title-main">Alfa Romeo 159</span> Compact executive car

The Alfa Romeo 159 is a car built by Italian marque Alfa Romeo between 2004 and 2011. It is a large family car in the compact-executive market segment with four-door saloon and five-door estate variants. Introduced at the 2005 Geneva Motor Show, as a replacement for the 156, the 159 used the GM/Fiat Premium platform, shared with the Alfa Romeo Brera and Spider as well as the Kamal and Visconti concept cars.

Multijet is Fiat and General Motors joint venture in manufacturer since 1996 common rail direct injection turbo diesel diesel engine technology. Most of the Fiat S.p.A., Fiat Professional, Groupe PSA, Alfa Romeo, Maserati, Lancia, Chrysler, Chevrolet, Daewoo Motors, Cadillac, Karsan, Temsa, Iveco, Jeep, Opel, Vauxhall Motors, RAM Trucks, Mitsubishi Fuso, Maruti Suzuki, Suzuki, Tata Motors and Saab Automobile branded vehicles are equipped with Multijet engines. Ownership of some Fiat Multijet designs is shared with General Motors as part of a settlement of the failed merger between the two auto conglomerates. The GM Powertrain Torino group in Turin, Italy, manages its interest in these engines. Some PSA Peugeot Citroën diesel engines are also rebadged JTD units, and vice versa. Fiat's common-rail diesel engine is also known as JTD, an initialism of UniJet Turbo Diesel.

<span class="mw-page-title-main">Suzuki G engine</span> Reciprocating internal combustion engine

The Suzuki G engine is a series of three- and four-cylinder internal combustion engines manufactured by Suzuki Motor Corporation for various automobiles, primarily based on the GM M platform, as well as many small trucks such as the Suzuki Samurai and Suzuki Vitara and their derivatives.

<span class="mw-page-title-main">Alfa Romeo V6 engine</span> Reciprocating internal combustion engine

The Alfa Romeo V6 engine is a 60° V6 engine made by Alfa Romeo from 1979 to 2005. It was developed in the early 1970s by Giuseppe Busso, and first used on the Alfa 6 with a displacement of 2.5 L (2,492 cc) and a SOHC 12-valve cylinder head. Later versions ranged from 1,996 to 3,179 cc and had DOHC 24-valve valvetrains. The original design had short pushrods for the exhaust valves in a design similar to earlier Lancia Fulvia engines. The first DOHC version was in the 1993 Alfa Romeo 164, with an aluminium alloy engine block and head with sodium filled exhaust valves.

References

  1. "Holden's new Alloytec engine may chew as much fuel as the engine it replaces". goauto.com.au. Retrieved 2009-06-23.
  2. "news 2002". italiaspeed.com. Retrieved 2007-10-24.
  3. "The New Alfa Romeo 156: Same Beautiful Looks, New Muscles, New Brain". autoweb.com.au. 2002. Archived from the original on 2012-03-24. Retrieved 2012-03-23.
  4. "Alfa Romeo 159 arrives". pistonheads.com. 2006. Retrieved 2010-12-30.
  5. "Alfa Romeo Brera 3.2 JTS V6". carpoint.com.au. Retrieved 2012-03-23.