Saab H engine | |
---|---|
Overview | |
Manufacturer | Saab Automobile (1981-2009) BAIC (2009-present) |
Also called |
|
Production | 1981–2010 |
Layout | |
Configuration | Inline-4 |
Displacement |
|
Cylinder bore |
|
Piston stroke |
|
Cylinder block material | Cast iron |
Cylinder head material | Aluminum |
Valvetrain |
|
Compression ratio |
|
Combustion | |
Turbocharger | |
Fuel system | Carburetor, Fuel injection |
Management | |
Fuel type | Gasoline |
Oil system | Wet sump |
Cooling system | Water-cooled |
Output | |
Power output | 92–310 hp (69–231 kW; 93–314 PS) |
Torque output | 177–440 N⋅m (131–325 lb⋅ft) |
Emissions | |
Emissions target standard | Euro 6 (BAIC) |
Emissions control systems | Catalytic converter, EGR |
Chronology | |
Predecessor | Saab B engine |
Successor | GM Ecotec engine |
The Saab H engine is a redesign of the Saab B engine, which in turn was based on the Triumph Slant-4 engine.
Despite the name it is not an H engine or horizontally opposed engine, but a slanted inline-4. The H engine was introduced in 1981 in the Saab 900 and was also used in the Saab 99 from 1982 onwards. H stood for high compression; higher compression was part of the update from B to H engine. It continued in use in the 900/9-3, 9000, and 9-5. The 2003 GM Epsilon-based 9-3 switched to the GM Ecotec engine, leaving the 9-5 as the sole user of the H engine. The H family of engine was used in the first-generation 9-5 until it was discontinued in 2010. The tooling and know-how was sold to BAIC. The latter B2X4 and B2X5 engines have in practice nothing in common with the early B engines except cylinder spacing.
All versions feature a grey cast iron block and an aluminum head with a single or double overhead chain driven camshafts. SOHC engines use two valves per cylinder and DOHC versions use four valves per cylinder with a pentroof chamber, the valve angle being 22 degrees from vertical. All engines use flat inverted bucket type valve lifters, hydraulic in the case of DOHC engines.
The engines were given numbers, for instance B201 is a 2.0-litre (20) engine with one camshaft.
B201 is the original H engine with two valves per cylinder and a single overhead camshaft. It was introduced in 1981 and unlike the B engine it did not have the central shaft which used to power the distributor, oil- and coolant pump. Instead the distributor is located at the front of the cylinder head and directly driven by the camshaft, while the integrated waterpump was replaced with a separate unit to the rear of the engine.
It was available with 100 PS (74 kW; 99 hp) at 5200 rpm using a single carburettor, 108 PS (79 kW; 107 hp) at 5200 rpm using a dual carburettor, 118 PS (87 kW; 116 hp) at 5500 rpm using Bosch K-Jetronic fuel injection and a turbocharged, fuel injected version with 145 PS (107 kW; 143 hp) at 5000 rpm. In 1986 an intercooled version of the turbo engine also became available, it produces 155 PS (114 kW; 153 hp) at 5500 rpm.
Valmet Automotive in Uusikaupunki also planned a downsized 1.6 liter version of B201, to better suit Finnish vehicle tax laws. Downsizing was made by using a narrower cylinder bore. The prototype engine produced 92 PS (68 kW; 91 hp) at 5400 rpm, fitted with Bosch K-Jetronic fuel injection. One such prototype engine is displayed in the Uusikaupunki Saab museum.
In 1984, Saab added a 16 valve cylinder head with double overhead camshafts. They retroactively renamed the 8-valve version the B201 and used B202 as the name of the new multi-valve unit. Another notable addition to the B202 was hydraulic valve lifters and Ecopower ("ep" in Italy, "(900)S" elsewhere), with a pre-heated catalytic converter for reduced emissions.
In 1991, Saab introduced a 140 hp (103 kW) 2.1-litre naturally aspirated 16 valve version of this engine, with an increased displacement of (2.1 L; 129.3 cu in (2,119 cc)) and a resulting name of B212. The inlet manifold was enlarged and redesigned for better and greater flow. The intake manifold and the head from the 2.1-litre constitute a well-known replacement for 1985-1993 16 valve, 2.0-litre turbocharged Saabs. Power increase is modest at stock boost but becomes much more evident at higher boost levels.
Engine builder John Nicholson also developed a Formula Three engine from the B202, for use in a Reynard 853 chassis. [1] This version one of the first to use Saab's direct ignition system (SDI) and produced 165 PS (121 kW) at 5600 rpm. Its other strength was high power in an unusually broad powerband for a naturally aspirated racing engine. [1]
A major redesign of the H engine came in 1990 in the form of the new B234 for the Saab 9000. The B234 featured an increase in stroke from 78 mm (3.07 in) to 90 mm (3.54 in), increasing the displacement to 2.3 liters. With this increased stroke also came a new engine block with increased deck height to make sufficient room for the increased stroke length without being forced to use shorter connecting rods, and in-block counter-rotating balance shafts for reduced vibration (NVH). There are two generations of B234 engine, one made from 1990-1993, the other from 1994 to 1998. The later motors had a revised oil sump system, head, timing cover, and different bell housing pattern. Unlike the previous B202, the block was no longer angled, but straight, something that made it unsuitable for the 900 model with its gearbox under the engine, built into the engine oil sump. The longer stroke B234 was last produced in 1998, that being the last year for the 9000 model. The B234 was selected as one of Ward's 10 Best Engines for 1995 and 1996.
The B202 was still being produced in 1993, but for the new generation Saab 900 being released in 1994 a new 2.0L engine was required. This new engine, the B204, was based on the 9000's B234, but in order to make the engine fit in the 900 the engine had to be shortened. This meant that a new chain drive for the camshafts was required to reduce the length of the engine. The B204 engine was available with natural aspiration in 900, 9000 and 9-3 in the form of 2.0i (B204i), with a low pressure turbo in the form of 9000 and 9-3 2.0t (B204E) or Saab 900 and 9-3 2.0T (B204L). B204R was briefly available in the 1999 9-3 Aero (U.S. market 'SE') model. B204 was in production in the Saab 9-3 until 2000, when it was replaced by B205.
With the introduction of the OBDII compliant B204 (also coincidental with the introduction of Trionic T5.5) Saab embarked on a new concept they termed as "Ecopower" where engines were designed for high power output while also delivering exceptional economy and low environmental impact. [2]
Turbocharged engines used Garrett T25 turbochargers and the B234R (9000 Aero manual) used a Mitsubishi Heavy Industries TD04HL-15G-6 in model year -93 and TD04HL-15T-6 later on.
The B204 and B234 are regarded by engine tuners as the preferable engine for performance tuning over the later B205 and B235 engines as the internals are of a higher strength. The later models had lightened internal components to improve efficiency and fuel economy but limit the total power output when the engine's software is revised to increase the boost pressures and specific power output. The B204 engine became a very popular engine swap for Vauxhall and Opel Astra, Calibra, Cavalier and Vectras with the GM T-body platform, in Scandinavia in the mid 2000s—the engine uses the same mounting positions due to sharing the same platform. In the UK it is swapped into rotary equipped Mazda RX8, in Ukraine and Russia it is a swap option for Daewoo (now Chevrolet) models of similar age.
Engine | Power | Torque | CR. | Bore × Stroke | Rod Length | Boost pressure |
---|---|---|---|---|---|---|
B204i | 130 hp (96 kW) at 5500 rpm | 177 N⋅m (131 lb⋅ft) at 4300 rpm | 10.1:1 | 90 mm × 78 mm (3.54 in × 3.07 in) | 153 mm (6.0 in) | — |
B204E | 154 hp (113 kW) at 5500 rpm | 219 N⋅m (162 lb⋅ft) at 3600 rpm | 9.2:1 | 0.4 bar (5.8 psi) | ||
B204L | 185 hp (136 kW) at 5500 rpm | 263 N⋅m (194 lb⋅ft) at 2100 rpm | 0.73 bar (10.6 psi) | |||
B204R | 205 hp (151 kW) at 5500 rpm | 283 N⋅m (209 lb⋅ft) at 2200 rpm | 1 bar (15 psi) | |||
B234i (1990–1993) | 146 hp (107 kW) at 5500 rpm | 212 N⋅m (156 lb⋅ft) at 3800 rpm | 10.1:1 | 90 mm × 90 mm (3.54 in × 3.54 in) | 147 mm (5.8 in) | — |
B234i (1994–) | 150 hp (110 kW) at 5600 rpm | 210 N⋅m (155 lb⋅ft) at 4300 rpm | 10.5:1 | 153 mm (6.0 in) | ||
B234E | 170 hp (125 kW) at 5700 rpm | 260 N⋅m (192 lb⋅ft) at 2100 rpm | 9.25:1 | 147 mm (5.8 in) | 0.55 bar (8.0 psi) | |
B234L (1990–1993) | 195 hp (143 kW) at 5500 rpm | 329 N⋅m (243 lb⋅ft) at 1900 rpm (5MT) | 8.5:1 | 0.8 bar (12 psi) | ||
B234L (1994–1998) | 200 hp (147 kW) at 5500 rpm | 323 N⋅m (238 lb⋅ft) at 1800 rpm (5MT) | 9.25:1 | |||
B234R | 225 hp (165 kW) at 5500 rpm | 342 N⋅m (252 lb⋅ft) at 1950 rpm | 1.08 bar (15.7 psi) |
Note: The primary difference between the B204L and the B204R is with the intercooler, the turbo, the wastegate 'base boost' setting.
The B206 is a version of the B204 but without the dual balance shafts and without oil jets under the pistons. It was only offered as a naturally aspirated engine B206I producing 133 hp (99 kW), seemingly a Europe-and-Australia-only option in 1994 non-turbo 900 NGs. This engine is popular among Saab tuners in Sweden (e.g. Trollspeed) due to the lack of balance shafts but with presumably equal strength as the turbo blocks with balance shafts.
The B205 and B235 engines are an evolution of the B204 and B234 engines. They were introduced in the 1998 Saab 9-5 giving reduced fuel consumption and emissions with improved refinement. The changes included lightweight internal components:lighter valves, softer valve springs, lighter pistons, and lower-drag oil pump. Another development was the introduction of the Trionic 7 torque demand type engine management system. Trionic 7 equipped engines have the black direct ignition casing on top of the engine rather than the red of the Trionic 5.
BAIC offers the Saab H engine in various configurations on several of its models. The B205RGA and B235RGA, 2.0 and 2.3 litre turbo engines are available similar to those used in Saabs. Further BAIC offers a smaller 1.8 litre displacement version named B185RGA. This version was developed to meet requirement for government vehicle with maximum displacement of 1.8 litres. BAIC continued the development of the Saab H engine. In 2015, a B236R prototype was unveiled at the Shanghai Autoshow. This engine design incorporates variable valve timing and an EGR system which allows the engine to comply with Euro 6 emission standards. [3]
The BAIC BJ40L is available with a 201 hp (150 kW) engine named B201R and a 231 hp (172 kW) engine named B231R. [4] A 177 hp (132 kW) engine named B205EFA is offered in the Senova X65. [5] The BAIC BJ80 is also available with the 231 hp (172 kW) B231R engine variant. The B201R and B231R models do not use Saab's Trionic engine management system and direct ignition cassette.
Engine | Displacement | Power | Torque | CR. | Bore × Stroke |
---|---|---|---|---|---|
B185RGA [6] | 1,799 cc (109.8 cu in) | 177 hp (132 kW) at 5500 rpm | 240 N⋅m (177 lb⋅ft) at 1800–4800 rpm | 9.2:1 | 85.7 mm × 78 mm (3.37 in × 3.07 in) |
B201R | 1,992 cc (121.6 cu in) | 201 hp (150 kW) at 5500 rpm | 270 N⋅m (199 lb⋅ft) at 1900–4500 rpm | 8.8:1 | 90 mm × 78 mm (3.54 in × 3.07 in) |
B205EFA | 177 hp (132 kW) at 5500 rpm | 240 N⋅m (177 lb⋅ft) at 1800–4800 rpm | 9.0:1 | ||
B205RGA | 204 hp (152 kW) at 5500 rpm | 290 N⋅m (214 lb⋅ft) at 1800 rpm | 8.8:1 | ||
B231R | 2,290 cc (140 cu in) | 231 hp (172 kW) at 5500 rpm | 350 N⋅m (258 lb⋅ft) at 1900–4300 rpm | 9.1:1 | 90 mm × 90 mm (3.54 in × 3.54 in) |
B235RGA | 250 hp (186 kW) at 5300 rpm | 350 N⋅m (258 lb⋅ft) at 1900 rpm | 9.3:1 | ||
B236R [7] | 250 hp (186 kW) at 5300 rpm | 350 N⋅m (258 lb⋅ft) at 1900 rpm | 9.3:1 |
The H-engine ended production with the 1st Generation Saab 9-5 in 2009 when the intellectual property was transferred to BAIC. Starting in 2003 with the 9-3 Sport Sedan, Saab began utilizing the L850 engine Ecotec. Beginning in 2010 with the 2nd generation 9-5, all Saabs utilized the Ecotec. There were some technologies carried over into the Ecotec line from the Saab H-engine, but for the most part there is very little similarity between the two engine families. Saab continued to use its Trionic engine management system with the Ecotec.
The Saab 900 is a mid-sized automobile produced by Swedish manufacturer Saab from 1978 until 1998 in two generations: the first from 1978 to 1994, and the second from 1994 to 1998.
The Saab 9-3 is a compact executive car initially developed and manufactured by the Swedish automaker Saab.
The Saab 9000 is an automobile produced by the Swedish company Saab from 1984 to 1998. Representing the company's foray into the executive car scene, it was developed as a result of the successes of the turbocharged 99 and 900 models. The 9000 remained in production until May 1998 and was replaced by the 9-5 in late 1997, although some final cars were produced into 1998. The Saab 9000 was only available with petrol engines, in two different 5-door hatchback designs or as a 4-door notchback.
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.
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.
A multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing, and with more smaller valves may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power.
The Mitsubishi Astron or 4G5/4D5 engine, is a series of straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time.
The 6G7 series or Cyclone V6 engine is a series of V6 piston engines from Mitsubishi Motors. Five displacement variants were produced from 1986 to 2021, with both SOHC and DOHC, naturally aspirated and turbo charged layouts. While MIVEC variable valve timing has also been implemented in some versions the 2.5, 3.0, and 3.5 L versions were also available with gasoline direct injection. This engine has been the flagship powerplant of the company except when they briefly built a V8 in 1999–2001. The staple of their high-end sedans, it was given twin-turbos for the Mitsubishi GTO, and became the most powerful car ever built by the company at the time.
The Lotus 900 series is a family of internal combustion engines designed and built by Lotus Cars of United Kingdom. Successor to the Lotus-Ford Twin Cam, the 900 was the first complete engine developed by Lotus. The engine was built from 1972 to 1999.
Multijet is a Fiat and General Motors joint venture, established in 1996, in manufacturing diesel engines with turbo and common rail direct injection 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.
The Toyota S Series engines are a family of straight-four petrol engines with displacements between 1.8 and 2.2 litres, produced by Toyota Motor Corporation from January 1980 to August 2007. The S series has cast iron engine blocks and aluminium cylinder heads. This engine was designed around the new LASRE technology for lighter weight – such as sintered hollow camshafts.
The Volvo B21 is a slanted straight-four engine first used in the Volvo 200 series, meant to replace the B20. The B21 and all derived engines are often referred to as red block engines for the red paint applied to the block. The primary differences when compared to the B20 was the switch to a SOHC in place of the older pushrod configuration, and an aluminum crossflow cylinder head versus the iron head of the B20.
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 displacement and includes most modern features such as gasoline direct injection and turbocharger.
The Family II is a straight-4 piston engine that was originally developed by Opel in the 1970s, debuting in 1981. Available in a wide range of cubic capacities ranging from 1598 to 2405 cc, it simultaneously replaced the Opel CIH and Vauxhall Slant-4 engines, and was GM Europe's core mid-sized powerplant design for much of the 1980s, and provided the basis for the later Ecotec series of engines in the 1990s.
The Volvo 900 Series is a range of executive cars produced by the Swedish manufacturer Volvo Cars from 1990 to 1998. The 900 Series was introduced in 1990 to replace the 700 Series from which it derived. Prior to the end of its production, the 960 was renamed as the Volvo S90 (saloon) and Volvo V90 (estate), and the 940 was renamed 940 Classic, becoming the last rear-wheel-drive cars from Volvo, until the 2023 Volvo XC40.
Trionic is an engine management system developed by Saab Automobile. It consists of an engine control unit (ECU) that controls 3 engine aspects:
The Opel cam-in-head engine (CIH) is a family of automobile engines built by former General Motors subsidiary Opel from 1965 until 1998, appearing extensively in Opel/Vauxhall badged cars during this period. Both four- and six-cylinder inline configurations were produced. The name derives from the location of the camshaft, which was neither cam-in-block nor a true overhead camshaft. In the CIH engine the camshaft is located in the cylinder head but sits alongside the valves rather than above them, so therefore effectively is still an overhead valve design. The valves are actuated through very short tappets and rocker arms. The engine first appeared in the Opel Rekord B in 1965, and was largely replaced in four-cylinder form by the GM Family II unit as Opel/Vauxhall's core mid-size engine in the 1980s, with the six-cylinder versions continuing until 1994 in the Omega A and Senator B. A large capacity 2.4L four-cylinder version continued until 1998.
GM referred to many of its diesel engines as Ecotec including the GM Medium Diesel engine and the Isuzu-derived Circle L engine. This page describes the SOHC 16 valve turbocharged engines which GM introduced in 1997. and which were used extensively in its European models.