Tässä tietoa uuden 9-3:n moottoreista. Lähteenä on Saab Media Online -nettisivu ja uutinen on päivätty 8.7.2002.:
Powertrain
Integrated Turbo Power
“The closer integration of the new engines and transmissions has given us a far more sophisticated and refined level of performance.”
Kent Bovellan, Project Leader, new Saab 9-3
New Saab 9-3 Highlights include:
All new, aluminum 2.0-liter turbo engine
Excellent torque, driveability and refinement
New Trionic 8 engine management system
New automatic and manual transmissions
Exceptional turbocharged performance delivering new levels of mechanical refinement and driveability were the objectives of powertrain development for the new Saab 9-3.
Saab engineers have long been regarded as world leaders in the art of turbocharging, a distinction recognized by Saab’s appointment as the Center of Expertise within General Motors for turbocharged gasoline engine development. Now with the launch of the new 9-3, Saab has matched the redoubtable torque of its engines with a more progressive power delivery.
A new, all-aluminum 2.0-liter turbocharged engine, based on the L850 series, has been developed by engineers based at Saab’s engine plant in Södertälje, Sweden and is configured for three levels of power output: 150, 175 or 210 bhp. Transmissions include an improved five-speed and a new six-speed manual gearbox and a new five-speed automatic transmission with Saab Sentronic manual gear selection and the option of steering wheel controls. An improved 125 bhp 2.2 TiD engine completes the powertrain menu.
Advances in electronic engine and transmission control deliver appreciable improvements in throttle response, torque delivery and power-on/power-off behavior. The smooth, turbocharged performance of the new Saab 9-3 is the perfect complement to its superb chassis dynamics for a rewarding, fun-to-drive experience.
New Lightweight 2.0-liter Turbo
The all-aluminum, four-cylinder 2.0-liter gasoline engine is 15 kilos lighter than its predecessor. It is smoother, quieter, more compact and better packaged. It also operates with lower frictional losses for improved fuel consumption and lower exhaust emissions.
The block is perfectly ‘square’ in configuration, with a bore and stroke of 86 mm, and carries a unique Saab four-valve cylinder head, maintenance-free chain-driven camshafts, counter-rotating balancer shafts, a dual mass flywheel and an integrated oil cooler. It is controlled by the latest Trionic 8 version of Saab’s own, in-house engine management system, the most powerful in commercial production.
All main internal components are unique to the turbocharged application in the new Saab 9-3. These include a five-bearing forged steel crankshaft, strengthened con-rods, redesigned pistons and gudgeon pins, piston oil cooling jets and reprofiled camshafts. The cylinder head is a unique alloy casting optimized for turbocharging, with substantially revised inlet porting, modified inlet valves and sodium-cooled exhaust valves.
A major innovation for Saab is the in-board location of the turbocharger, behind the transversely-installed engine. This position allows an even quicker warm-up for the front exhaust catalyst; giving improved fuel consumption and lower cold start emissions, as well as benefiting weight distribution.
A Garrett GT20 turbocharger is used for the 150 and 175 bhp engines with mild maximum boost pressures set at 0.5 and 0.7 bar respectively. A larger Mitsubishi TDO4 unit, operating at 0.85 bar, is fitted to the 210 bhp version, which also has more aggressive camshafts. Both turbos have integrated by-pass valves.
The power characteristics of all three engine variants set new Saab standards for running refinement, throttle response and progressive torque delivery, as well as yielding even better fuel consumption and lower CO2 emissions.
In common with all Saab gasoline engines, outstanding levels of torque are generated at low engine speeds, with 90 per cent of the peak value available from below 2,000 rpm. Maximum power and torque figures are as follows:
2.0t150bhp @ 5,500rpm,240NM @ 2,500rpm
2.0T175bhp @ 5,500rpm,265NM @ 2,500rpm
2.0Turbo210bhp @ 5,300rpm,300NM @ 2,500rpm
2.2TiD125bhp @ 4,000rpm,280NM @ 1,500rpm
Improved Driveability from New Trionic 8
Saab is alone among the world’s premium car-makers in producing its own engine management system. The Trionic system is specifically geared to the needs of turbocharged engines and allows Saab to carry out speedier, more effective development work. Ignition timing, fuel injection, turbo boost pressure, air mass measurement and the throttle setting are all key engine functions controlled by the Saab-written Trionic software, making it the most sophisticated engine management system in commercial production for turbocharged engines.
In the new Saab 9-3, Trionic 8 now incorporates engine start-up and temperature control and further developments for improving torque management and throttle response. It is this in-house capability that provides the key to achieving one of the powertrain development team’s main objectives: better driveability.
The torque delivery of the engine is now more ‘linear’. Under acceleration, Trionic can sense, for example, if there is insufficient grip available for a given throttle setting and will modulate engine torque accordingly. The adjustments are hardly noticeable but make the driving experience smoother and more enjoyable.
Uncomfortable jerks, which can be experienced when suddenly lifting off or stamping hard on the throttle, are also largely eliminated. Trionic is able to ‘read’ and anticipate every driving situation, cushioning the transitory effects of large throttle movements by comparing parameters such as road speed, engine speed, engine loading and gear selected. The end result is a smooth, powerful and extremely pliable powertrain, devoid of ‘shunting’ under sudden throttle movements.
The Trionic system enables Saab to constantly achieve improved operating efficiencies and is a powerful electronic platform for Saab’s own future engine technologies.
As a measure of its sophistication, Trionic is unique in monitoring ionization rates at each spark plug to individually control and adjust the combustion process for each cylinder. This involves about two million calculations per second! To avoid such complexity, other systems used by competitors apply an average taken from all cylinders.
Uprated Turbo Diesel
For the new 9-3, the current 125 bhp, direct injection 2.2-liter TiD engine is updated with a variable pitch turbine in the turbocharger, higher fuel injector pressures, up to 1800 bar, and a quieter injection pump. In addition to counter-rotating balancer shafts in the sump for smoother running, vibration suppression is now improved with the fitment of a dual mass flywheel.
The 2.2 TiD engine offers an enjoyable combination of strong performance and excellent fuel economy. Maximum power is produced at 4,000 rpm and maximum torque, an impressive 280 Nm, is developed between 1,500 and 3,000 rpm for a lively response.
Unique Engine Installation
As part of the extensive program to minimize low frequency noise and vibration, Saab engineers have adopted a completely new ‘pendulum’ technique for mounting both gasoline and diesel engines.
In order to absorb the main torque forces, which are generated at the bottom of the engine, the entire powertrain assembly is, in effect, suspended from two top mounts, one hydraulically damped, in the engine bay. Two short, aluminium torque rods, with rubber bushings at both ends, are also fitted low down, betweewn the back of the powertrain and the rear of the front sub-frame. One is attached to the oil sump and the other to the transmission. These act like mini shock absorbers, allowing lateral movement, in or out, of up to 20 mm, equivalent to a swing of 4.5° from the vertical, just like a pendulum.
This sophisticated installation directs forces to the bottom of the car’s structure and away from the passenger cabin, playing an important role in isolating the interior from unwanted engine noise and vibration.
New Automatic Transmission
A new ‘smart’ five-speed automatic transmission is available for all gasoline variants, including ‘Saab Sentronic’, a sequential manual gear shift, and the option of steering wheel gear change buttons. The greater control offered by Saab Sentronic means that ‘sport’ or ‘winter’ mode settings are no longer required.
This transmission, produced by Asin AW, is adaptive to both the driver and road conditions and is programmed to fully exploit the Saab turbo’s power characteristics. It can sense changes in engine performance, engine load, road gradient or altitude and will quickly find the ‘right’ gear without any irritating ‘hunting’. It will also automatically engage neutral when braking to a stop.
For closer driver involvement, the shift lever can be moved across the gate to ‘manual’ Sentronic mode, giving sequential ‘up’ or ‘down’ changes at will with full lock-up in all five speeds. This process is taken a step further by the option of steering wheel buttons, which bring gear-shifting control right to the fingertips of the driver.
Six speed manual gearbox
Saab’s transmission plant at Gothenburg is a major supplier of manual gearboxes to General Motors and for the new 9-3 a completely new, six-speed manual gearbox has been designed.
It is capable of handling extremely high torque levels, up to 400 Nm, and features improved syncromesh for better gear shifting quality and double output shafts for
lightness and compact size.
At launch, it is standard fitment for the 9-3 Aero.
Improved Manual Gear Change
The gear change quality of the current five-speed gearbox is substantially upgraded for the new Saab 9-3 by the adoption of a cable linkage, instead of rods, from the gear lever.
The driver now enjoys a faster gear change with a much smoother and more positive feel. In combination with the dual mass flywheel, noise resonance and vibration are also reduced. It is another small part of the powertrain program’s mission for improved on-the-road refinement.
New Saab 9-3 In Focus: How Saab ‘turned the corner’
Saab engineers love to ‘talk torque’ because it is an engine’s pulling power that defines its true performance. The ability to deliver strong, low down power has always been an outstanding feature of Saab turbo engines.
It is graphically summed up by that classic ‘Ayers Rock’ torque curve, depicting the impressive power delivery of Trionic-controlled Saab turbos. Now for Ayers Rock, read Houston Astrodome!
Saab experts have succeeded in ‘turning the corner’, getting rid of that sudden, sheer cliff face. The smoother contour of ‘the dome’ translates to an engine that’s more progressive, delivering more torque earlier and slightly less later, during pick-up from idle (at just 670 rpm) to 2,000 rpm. Once in the mid-range, towards the crown of ‘the dome’, it is, of course, business as usual!
Trionic 8 brings the turbo in slightly earlier and a clever, electronic ‘sleight of hand’ is used at low engine revs, very briefly opening the throttle slightly more than requested in order to spool up the turbo quicker. It’s all possible thanks to the ‘drive-by-wire’, electronic throttle and the power of the Trionic ‘brain’.
“The driver communicates with the engine through the accelerator pedal,” says Birger Schlaich, Manager - Powertrain Integration. “and we want to make that experience as precise and pleasant as possible.
“Another good feature for better driveability is the programming of the signal from accelerator pedal itself. At low speeds, there is much more movement for a given amount of power in order to make the car nicer to control, such as when parking and reversing. At higher speeds, less movement is required and that’s better for a quick response when overtaking, for example.”
“For the new 9-3 we have done a lot of fine tuning such as this to make the behavior of the powertrain as seamless as possible. We are quite pleased with the results.”
Powertrain
Integrated Turbo Power
“The closer integration of the new engines and transmissions has given us a far more sophisticated and refined level of performance.”
Kent Bovellan, Project Leader, new Saab 9-3
New Saab 9-3 Highlights include:
All new, aluminum 2.0-liter turbo engine
Excellent torque, driveability and refinement
New Trionic 8 engine management system
New automatic and manual transmissions
Exceptional turbocharged performance delivering new levels of mechanical refinement and driveability were the objectives of powertrain development for the new Saab 9-3.
Saab engineers have long been regarded as world leaders in the art of turbocharging, a distinction recognized by Saab’s appointment as the Center of Expertise within General Motors for turbocharged gasoline engine development. Now with the launch of the new 9-3, Saab has matched the redoubtable torque of its engines with a more progressive power delivery.
A new, all-aluminum 2.0-liter turbocharged engine, based on the L850 series, has been developed by engineers based at Saab’s engine plant in Södertälje, Sweden and is configured for three levels of power output: 150, 175 or 210 bhp. Transmissions include an improved five-speed and a new six-speed manual gearbox and a new five-speed automatic transmission with Saab Sentronic manual gear selection and the option of steering wheel controls. An improved 125 bhp 2.2 TiD engine completes the powertrain menu.
Advances in electronic engine and transmission control deliver appreciable improvements in throttle response, torque delivery and power-on/power-off behavior. The smooth, turbocharged performance of the new Saab 9-3 is the perfect complement to its superb chassis dynamics for a rewarding, fun-to-drive experience.
New Lightweight 2.0-liter Turbo
The all-aluminum, four-cylinder 2.0-liter gasoline engine is 15 kilos lighter than its predecessor. It is smoother, quieter, more compact and better packaged. It also operates with lower frictional losses for improved fuel consumption and lower exhaust emissions.
The block is perfectly ‘square’ in configuration, with a bore and stroke of 86 mm, and carries a unique Saab four-valve cylinder head, maintenance-free chain-driven camshafts, counter-rotating balancer shafts, a dual mass flywheel and an integrated oil cooler. It is controlled by the latest Trionic 8 version of Saab’s own, in-house engine management system, the most powerful in commercial production.
All main internal components are unique to the turbocharged application in the new Saab 9-3. These include a five-bearing forged steel crankshaft, strengthened con-rods, redesigned pistons and gudgeon pins, piston oil cooling jets and reprofiled camshafts. The cylinder head is a unique alloy casting optimized for turbocharging, with substantially revised inlet porting, modified inlet valves and sodium-cooled exhaust valves.
A major innovation for Saab is the in-board location of the turbocharger, behind the transversely-installed engine. This position allows an even quicker warm-up for the front exhaust catalyst; giving improved fuel consumption and lower cold start emissions, as well as benefiting weight distribution.
A Garrett GT20 turbocharger is used for the 150 and 175 bhp engines with mild maximum boost pressures set at 0.5 and 0.7 bar respectively. A larger Mitsubishi TDO4 unit, operating at 0.85 bar, is fitted to the 210 bhp version, which also has more aggressive camshafts. Both turbos have integrated by-pass valves.
The power characteristics of all three engine variants set new Saab standards for running refinement, throttle response and progressive torque delivery, as well as yielding even better fuel consumption and lower CO2 emissions.
In common with all Saab gasoline engines, outstanding levels of torque are generated at low engine speeds, with 90 per cent of the peak value available from below 2,000 rpm. Maximum power and torque figures are as follows:
2.0t150bhp @ 5,500rpm,240NM @ 2,500rpm
2.0T175bhp @ 5,500rpm,265NM @ 2,500rpm
2.0Turbo210bhp @ 5,300rpm,300NM @ 2,500rpm
2.2TiD125bhp @ 4,000rpm,280NM @ 1,500rpm
Improved Driveability from New Trionic 8
Saab is alone among the world’s premium car-makers in producing its own engine management system. The Trionic system is specifically geared to the needs of turbocharged engines and allows Saab to carry out speedier, more effective development work. Ignition timing, fuel injection, turbo boost pressure, air mass measurement and the throttle setting are all key engine functions controlled by the Saab-written Trionic software, making it the most sophisticated engine management system in commercial production for turbocharged engines.
In the new Saab 9-3, Trionic 8 now incorporates engine start-up and temperature control and further developments for improving torque management and throttle response. It is this in-house capability that provides the key to achieving one of the powertrain development team’s main objectives: better driveability.
The torque delivery of the engine is now more ‘linear’. Under acceleration, Trionic can sense, for example, if there is insufficient grip available for a given throttle setting and will modulate engine torque accordingly. The adjustments are hardly noticeable but make the driving experience smoother and more enjoyable.
Uncomfortable jerks, which can be experienced when suddenly lifting off or stamping hard on the throttle, are also largely eliminated. Trionic is able to ‘read’ and anticipate every driving situation, cushioning the transitory effects of large throttle movements by comparing parameters such as road speed, engine speed, engine loading and gear selected. The end result is a smooth, powerful and extremely pliable powertrain, devoid of ‘shunting’ under sudden throttle movements.
The Trionic system enables Saab to constantly achieve improved operating efficiencies and is a powerful electronic platform for Saab’s own future engine technologies.
As a measure of its sophistication, Trionic is unique in monitoring ionization rates at each spark plug to individually control and adjust the combustion process for each cylinder. This involves about two million calculations per second! To avoid such complexity, other systems used by competitors apply an average taken from all cylinders.
Uprated Turbo Diesel
For the new 9-3, the current 125 bhp, direct injection 2.2-liter TiD engine is updated with a variable pitch turbine in the turbocharger, higher fuel injector pressures, up to 1800 bar, and a quieter injection pump. In addition to counter-rotating balancer shafts in the sump for smoother running, vibration suppression is now improved with the fitment of a dual mass flywheel.
The 2.2 TiD engine offers an enjoyable combination of strong performance and excellent fuel economy. Maximum power is produced at 4,000 rpm and maximum torque, an impressive 280 Nm, is developed between 1,500 and 3,000 rpm for a lively response.
Unique Engine Installation
As part of the extensive program to minimize low frequency noise and vibration, Saab engineers have adopted a completely new ‘pendulum’ technique for mounting both gasoline and diesel engines.
In order to absorb the main torque forces, which are generated at the bottom of the engine, the entire powertrain assembly is, in effect, suspended from two top mounts, one hydraulically damped, in the engine bay. Two short, aluminium torque rods, with rubber bushings at both ends, are also fitted low down, betweewn the back of the powertrain and the rear of the front sub-frame. One is attached to the oil sump and the other to the transmission. These act like mini shock absorbers, allowing lateral movement, in or out, of up to 20 mm, equivalent to a swing of 4.5° from the vertical, just like a pendulum.
This sophisticated installation directs forces to the bottom of the car’s structure and away from the passenger cabin, playing an important role in isolating the interior from unwanted engine noise and vibration.
New Automatic Transmission
A new ‘smart’ five-speed automatic transmission is available for all gasoline variants, including ‘Saab Sentronic’, a sequential manual gear shift, and the option of steering wheel gear change buttons. The greater control offered by Saab Sentronic means that ‘sport’ or ‘winter’ mode settings are no longer required.
This transmission, produced by Asin AW, is adaptive to both the driver and road conditions and is programmed to fully exploit the Saab turbo’s power characteristics. It can sense changes in engine performance, engine load, road gradient or altitude and will quickly find the ‘right’ gear without any irritating ‘hunting’. It will also automatically engage neutral when braking to a stop.
For closer driver involvement, the shift lever can be moved across the gate to ‘manual’ Sentronic mode, giving sequential ‘up’ or ‘down’ changes at will with full lock-up in all five speeds. This process is taken a step further by the option of steering wheel buttons, which bring gear-shifting control right to the fingertips of the driver.
Six speed manual gearbox
Saab’s transmission plant at Gothenburg is a major supplier of manual gearboxes to General Motors and for the new 9-3 a completely new, six-speed manual gearbox has been designed.
It is capable of handling extremely high torque levels, up to 400 Nm, and features improved syncromesh for better gear shifting quality and double output shafts for
lightness and compact size.
At launch, it is standard fitment for the 9-3 Aero.
Improved Manual Gear Change
The gear change quality of the current five-speed gearbox is substantially upgraded for the new Saab 9-3 by the adoption of a cable linkage, instead of rods, from the gear lever.
The driver now enjoys a faster gear change with a much smoother and more positive feel. In combination with the dual mass flywheel, noise resonance and vibration are also reduced. It is another small part of the powertrain program’s mission for improved on-the-road refinement.
New Saab 9-3 In Focus: How Saab ‘turned the corner’
Saab engineers love to ‘talk torque’ because it is an engine’s pulling power that defines its true performance. The ability to deliver strong, low down power has always been an outstanding feature of Saab turbo engines.
It is graphically summed up by that classic ‘Ayers Rock’ torque curve, depicting the impressive power delivery of Trionic-controlled Saab turbos. Now for Ayers Rock, read Houston Astrodome!
Saab experts have succeeded in ‘turning the corner’, getting rid of that sudden, sheer cliff face. The smoother contour of ‘the dome’ translates to an engine that’s more progressive, delivering more torque earlier and slightly less later, during pick-up from idle (at just 670 rpm) to 2,000 rpm. Once in the mid-range, towards the crown of ‘the dome’, it is, of course, business as usual!
Trionic 8 brings the turbo in slightly earlier and a clever, electronic ‘sleight of hand’ is used at low engine revs, very briefly opening the throttle slightly more than requested in order to spool up the turbo quicker. It’s all possible thanks to the ‘drive-by-wire’, electronic throttle and the power of the Trionic ‘brain’.
“The driver communicates with the engine through the accelerator pedal,” says Birger Schlaich, Manager - Powertrain Integration. “and we want to make that experience as precise and pleasant as possible.
“Another good feature for better driveability is the programming of the signal from accelerator pedal itself. At low speeds, there is much more movement for a given amount of power in order to make the car nicer to control, such as when parking and reversing. At higher speeds, less movement is required and that’s better for a quick response when overtaking, for example.”
“For the new 9-3 we have done a lot of fine tuning such as this to make the behavior of the powertrain as seamless as possible. We are quite pleased with the results.”
Vastaukset 7
Vanhimmat
Jos jotakuta kiinnostaa vielä lukea em. kaltaisia virallisia tiedotteita uuden 9-3:n suorituskyvystä (esim. ohituskiihtyvyysajat), jarruista, alustasta, ohjattavuudesta ja turvallisuudesta, niin ilmoittakaa. Voin kopsata nuo tiedot Saab Media Onlinen sivuilta tälle palstalle.
eli, missä osoitteessa ko. sivut ovat. niin voi käydä lueskelemassa
http://home.swipnet.se/danny/
Siinä yksi linkki.
Nuo jutut ovat Saab Media Onlinen sivuilla, ja sinne pääsee vain rekisteröitymällä, jolloin saa usernamen ja passwordin. Ilmeisesti tuo sivu on tarkoitettu lähinnä journalisteille, mutta meikäläinen on onnistunut saamaan oikeudet sivulle pääsyyn. Kannattaa yrittää itse hakea oikeuksia sivulle, jospa vaikka onnistaisi. Mutta jos haluat nuo tekstit luettavaksi "ASAP", niin voin käydä kopsaamassa ne noilta sivuilta.
linkki:
http://media.saab.com
.. minulle sähköpostilla kuvia uudesta 9-3 Sport Sedanista? Itse en ole onnistunut saamaan pääsyä tuonne Saab media onlineen ja harmittaa pirusti kun ei näe autosta kunnon kuvia! Voisin lähettää sinulle postia, kun en viitsisi tähän laittaa sähköpostiosoitetta kaikkien nähtäville.
..Saabcars Onlinessa(?)
En saanut auki tuota SCO:n linkkiä, mutta yleensä tuo SCO:n Daniel käyttää noita Saab Media Onlinen kuvia. Tosin kaikkia Saab Media Onlinen juttuja en tuolta SCO:n sivuilta löytänyt.