Attention: TDR Forum Junkies I thought you guys might like to read this, the link to the site is at the bottom... ..... JJ
Ace Buzz Patroller Kenneth M reports that Cummins gave the public their first peek at the next generation ISB diesel at the recent BusCon show in Cleveland Ohio. This is the engine that will power the next generation 3/4 and 1 ton Ram's when they make their debut next year (note: the image above is of the current ISB). Regular readers will recall that I ran an item on a patent Cummins received for its new ISB engine block back in April.
Other then that, there hasn't been much Buzz about the new engine (which is the 3rd generation of the 5. 9 liter, six-cylinder B series engine). Last year one of my Ace Buzz Patrollers who had a chance to drive an ISB equipped test mule reported that the new 5. 9 liter, six-cylinder engine was amazingly quiet and very smooth throughout its power range.
Dodge will release details on the Ram 2500/3500 trucks next January at the North American International Autoshow. Since Cummins also markets the engine to the bus market, you won't have to wait that long.
Here's the scoop. The new low-emissions ISB engine is the latest in the Cummins proven "B" Series family of engines. Since its introduction in the early 90's, Cummins has built more than two million B Series engines. The majority of those have ended up under the hoods of Dodge Ram trucks.
The next generation engine is the first diesel to meet the EPA's diesel emissions standard for 2002. "Cummins has designed this new B Series engine to meet the needs of our customers," said Cummins' John Malina. " Drivers will experience an engine that is 80 percent quieter than its predecessor, with the lowest smog-producing NOx level of any diesel. "
Cummins now leads the diesel industry in lower emissions by offering the advanced 5. 9-liter engine at a standard of 2. 5 grams of nitrogen oxides (NOx) plus nonmethane hydrocarbons (NMHC). They have met this low-emissions standard, ahead of schedule, without using high-cost special fuel or expensive exhaust aftertreatment.
The engine utilizes cooled Exhaust Gas Recirculation (EGR), a system integrated into the engine design and controlled by the engine electronics. Cooled EGR works by routing a portion of the exhaust gas through a cooler and then introducing the cooled exhaust gas into the fresh intake charge air. This mixture contains fewer oxygen atoms per volume of charge, which lowers the flame temperature during combustion, thus reducing emissions.
"Cleaner air through lower emissions is a major concern for Cummins" Malina added. ". . . it's important to us that Cummins customers get the cleanest and quietest technology available at the time of purchase. " The ISB's redesigned fuel system also helps the engine meet its clean-emissions standards. This high-pressure common rail system offers a number of benefits, including: Lower emissions - due to more precise control of injection timing and fuel quantity over a wide range of engine speeds and loads. Lower noise - with pilot injection capability for improved noise control Improved transient response - with increased injection pressure for better performance at low-end speeds Improved cold-weather startability - from the high-pressure fuel system
This high-pressure common rail fuel system has proven its reliability in Cummins engines in Europe since October 2000, when the Euro III version of the six-cylinder ISB engine went into production. Higher horsepower ratings for the ISB - 230 hp and above - use Variable Geometry Turbochargers (VGT), a state-of-the-art design feature already proven in more than 40,000 engines now operating in Europe.
These VGTs are integrated into the engine's electronic controls and work by adjusting the nozzle size, thus changing the volume of the air flow, to improve the engine's performance. They allow for optimized air handling, which improves engine response at lower speeds. Customers will notice improved performance as the engine accelerates from a stop, as well as throughout the entire operating range. In addition to performance improvements, the ISB ratings with VGTs offer Cummins customers up to a 2 percent improvement in fuel economy over the current ISB.
To reduce engine noise, Cummins has moved the gear train to the rear of this new ISB engine. Placing the cam, fuel pump and accessory drives in the rear of the engine, together with the new high-pressure common rail fuel system, results in an engine that is 7 dBA quieter than its predecessor. The reduced noise is 80 percent quieter to the human ear and improves safety on the vehicle and reduces driver fatigue.
While there are a number of improvements with the new ISB, Cummins has retained several proven features from its predecessor. Those include a 24-valve cylinder head, which helps optimize combustion with the proper air/fuel mixture. Additionally, the rear gear train increases accessory drive capabilities. The ISB continues to offer vertically centered injection, which helps minimize the over-spray for longer service intervals (up to 15,000-mile oil change intervals in school bus applications).
The version of the ISB that will be offered in the Ram will probably have 275 horsepower and a torque rating between 505 and 545 lb ft of torque. The Buzz from Detroit is that the on again off again Allison T1000 automatic option for the Ram 2500 and 3500's is on again and will be available when the trucks debut in the fall of 2002 (as 2003's).
Source:Cummins
www.car-truck.com
Ace Buzz Patroller Kenneth M reports that Cummins gave the public their first peek at the next generation ISB diesel at the recent BusCon show in Cleveland Ohio. This is the engine that will power the next generation 3/4 and 1 ton Ram's when they make their debut next year (note: the image above is of the current ISB). Regular readers will recall that I ran an item on a patent Cummins received for its new ISB engine block back in April.
Other then that, there hasn't been much Buzz about the new engine (which is the 3rd generation of the 5. 9 liter, six-cylinder B series engine). Last year one of my Ace Buzz Patrollers who had a chance to drive an ISB equipped test mule reported that the new 5. 9 liter, six-cylinder engine was amazingly quiet and very smooth throughout its power range.
Dodge will release details on the Ram 2500/3500 trucks next January at the North American International Autoshow. Since Cummins also markets the engine to the bus market, you won't have to wait that long.
Here's the scoop. The new low-emissions ISB engine is the latest in the Cummins proven "B" Series family of engines. Since its introduction in the early 90's, Cummins has built more than two million B Series engines. The majority of those have ended up under the hoods of Dodge Ram trucks.
The next generation engine is the first diesel to meet the EPA's diesel emissions standard for 2002. "Cummins has designed this new B Series engine to meet the needs of our customers," said Cummins' John Malina. " Drivers will experience an engine that is 80 percent quieter than its predecessor, with the lowest smog-producing NOx level of any diesel. "
Cummins now leads the diesel industry in lower emissions by offering the advanced 5. 9-liter engine at a standard of 2. 5 grams of nitrogen oxides (NOx) plus nonmethane hydrocarbons (NMHC). They have met this low-emissions standard, ahead of schedule, without using high-cost special fuel or expensive exhaust aftertreatment.
The engine utilizes cooled Exhaust Gas Recirculation (EGR), a system integrated into the engine design and controlled by the engine electronics. Cooled EGR works by routing a portion of the exhaust gas through a cooler and then introducing the cooled exhaust gas into the fresh intake charge air. This mixture contains fewer oxygen atoms per volume of charge, which lowers the flame temperature during combustion, thus reducing emissions.
"Cleaner air through lower emissions is a major concern for Cummins" Malina added. ". . . it's important to us that Cummins customers get the cleanest and quietest technology available at the time of purchase. " The ISB's redesigned fuel system also helps the engine meet its clean-emissions standards. This high-pressure common rail system offers a number of benefits, including: Lower emissions - due to more precise control of injection timing and fuel quantity over a wide range of engine speeds and loads. Lower noise - with pilot injection capability for improved noise control Improved transient response - with increased injection pressure for better performance at low-end speeds Improved cold-weather startability - from the high-pressure fuel system
This high-pressure common rail fuel system has proven its reliability in Cummins engines in Europe since October 2000, when the Euro III version of the six-cylinder ISB engine went into production. Higher horsepower ratings for the ISB - 230 hp and above - use Variable Geometry Turbochargers (VGT), a state-of-the-art design feature already proven in more than 40,000 engines now operating in Europe.
These VGTs are integrated into the engine's electronic controls and work by adjusting the nozzle size, thus changing the volume of the air flow, to improve the engine's performance. They allow for optimized air handling, which improves engine response at lower speeds. Customers will notice improved performance as the engine accelerates from a stop, as well as throughout the entire operating range. In addition to performance improvements, the ISB ratings with VGTs offer Cummins customers up to a 2 percent improvement in fuel economy over the current ISB.
To reduce engine noise, Cummins has moved the gear train to the rear of this new ISB engine. Placing the cam, fuel pump and accessory drives in the rear of the engine, together with the new high-pressure common rail fuel system, results in an engine that is 7 dBA quieter than its predecessor. The reduced noise is 80 percent quieter to the human ear and improves safety on the vehicle and reduces driver fatigue.
While there are a number of improvements with the new ISB, Cummins has retained several proven features from its predecessor. Those include a 24-valve cylinder head, which helps optimize combustion with the proper air/fuel mixture. Additionally, the rear gear train increases accessory drive capabilities. The ISB continues to offer vertically centered injection, which helps minimize the over-spray for longer service intervals (up to 15,000-mile oil change intervals in school bus applications).
The version of the ISB that will be offered in the Ram will probably have 275 horsepower and a torque rating between 505 and 545 lb ft of torque. The Buzz from Detroit is that the on again off again Allison T1000 automatic option for the Ram 2500 and 3500's is on again and will be available when the trucks debut in the fall of 2002 (as 2003's).
Source:Cummins
www.car-truck.com
