Advanced Hybrid System 2 (AHS2) is a set of hybrid vehicle technologies jointly developed by General Motors and DaimlerChrysler. It uses two sets of gears in an automatic transmission: One for the internal combustion engine and another to multiply the power of a pair of electric motors. General Motors has stopped using the "AHS2" name as of 2006, preferring to call it simply a "two-mode hybrid system". Honda Insight, a hybrid gas-electric vehicle 2004 Toyota Prius, a hybrid gas-electric vehicle Whispering Wheel Bus, a hybrid bus with an in wheel motor design. ... General Motors Corporation (NYSE: GM), also known as GM, is a United States-based automobile maker with worldwide operations and brands including Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Opel, Pontiac, Saturn, Saab and Vauxhall. ... DaimlerChrysler AG (FWB: DCX, NYSE: DCX, TYO: 7663 ), headquartered in Stuttgart, Germany and Auburn Hills, Michigan, is a prominent automobile and truck manufacturer and financial services provider (through DaimlerChrysler Services). ... An automatic transmission is an automobile gearbox that can change gear ratios automatically as the car or truck moves, thus freeing the driver from having to shift gears manually. ... It has been suggested that Car engine be merged into this article or section. ... Electric motors of various sizes. ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...

Toyota's Hybrid Synergy Drive is similar in that it also combines the power from a single engine and a pair of electric motors, although it uses only one planetary gearset. Honda's Integrated Motor Assist uses a more traditional ICE and transmission where the flywheel is replaced with an electric motor.. Toyota redirects here. ... Hybrid Synergy Drive (HSD) is a set of hybrid car technologies developed by Toyota and used in that companys Prius, Highlander Hybrid, Camry HV, and Lexus RX 400h automobiles. ... Honda Motor Co. ... Integrated Motor Assist (commonly abbreviated as IMA) is Hondas hybrid car technology. ...

Joint venture

When GM and DaimlerChrysler engineers realized how similar their hybrid work was, they decided to join forces and share technology. This parallels the work of Ford Motor Company and Toyota, who also independently developed similar hybrid systems and shared patents. The GM/DaimlerChrysler partnership was announced on December 13, 2004 with Dieter Zetsche of DaimlerChrysler joining Rick Wagoner of GM on stage with a prototype. The agreement was not signed until the following August, however. The Ford Motor Company (often referred to as Ford; sometimes nicknamed FoMoCo), NYSE: F is a multinational corporation that manufactures automobiles. ... Toyota redirects here. ... December 13 is the 347th day of the year (348th in leap years) in the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Dieter Zetsche ( May 5, 1953 in Istanbul, Turkey) is member of the board of DaimlerChrysler since 1998, and is currently President of the Chrysler Group. ... Rick Wagoner G. Richard Wagoner, Jr. ...

GM is reportedly responsible for development of rear- and four-wheel drive truck and front wheel drive car systems while DaimlerChrysler is focused on a rear wheel drive luxury car application.

It was announced on September 7, 2005 that BMW would also join the alliance, likely using archrival DaimlerChrysler's rear wheel drive system. September 7 is the 250th day of the year (251st in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... BMW AG (an abbreviation for Bayerische Motoren Werke AG, or in English, Bavarian Motor Works), is a German company and manufacturer of automobiles and motorcycles. ...

Technology

The group touts its technology as "two-mode" to differentiate it from the Toyota, Honda, and Ford "single-mode" systems. The two modes of operation are: Toyota redirects here. ... Honda Motor Co. ... Ford may mean a number of things: A ford is a river crossing. ...

1. At low speeds, the vehicle can move with either the electric motors, the internal combustion engine, or both, making it a so-called full hybrid. All accessories will still remain functioning on electric power, and the engine can restart instantly if needed.
2. At higher speeds or heavier loads, the internal combustion engine always runs, and the system uses advanced technologies like Active Fuel Management and late intake valve closing to optimize fuel efficiency.

Despite the "two-mode" marketing pitch, however, it is the packaging of the system which is unique. A special automatic transmission incorporates two 60 kW (80 hp) DC electric motors, two planetary gearsets, and two selectively-engaging friction clutches. This system amplifies the output of the electric motors similarly to the way in which a conventional transmission amplifies the torque of an internal combustion engine. It also transfers more of the engine's torque to the wheels, making the transmission more efficient even without the electric motors in use. Finally, the whole system fits into the space of, and indeed appears as, a conventional 4L60-E automatic transmission. Active Fuel Management (formerly known as Displacement on Demand) is a trademarked name for the automobile variable displacement technology from General Motors. ... Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. ... An automatic transmission is an automobile gearbox that can change gear ratios automatically as the car or truck moves, thus freeing the driver from having to shift gears manually. ... Direct current (DC or continuous current) is the continuous flow of electricity through a conductor such as a wire from high to low potential. ... Epicyclic gearing is used here to increase output speed. ... A clutch is a subcomponent of an engines transmission designed to allow engagement or disengagement of the engine to the gearbox or whatever apparatus is being driven. ... In mechanics, a transmission or gearbox is the gear and/or hydraulic system that transmits mechanical power from a prime mover (which can be an engine or electric motor), to some form of useful output device. ... In physics, torque can be thought of informally as rotational force. Torque is commonly measured in units of newton metres; although, centiNewton Meters (cNm), Foot Pounds (Lb-Ft), Inch Pounds (Lb-In) and Inch Ounces (Oz-In) are also frequently used expressions of torque. ... The 4L60-E (and similar 4L65-E) is a series of automatic transmissions from General Motors. ...

A 300 volt battery pack is housed elsewhere in the vehicle to store energy. Most applications will also include 120 volt AC power outlets as on the 2004 Chevrolet Silverado hybrid. city lights viewed in a motion blurred exposure. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... The Silverado is the latest name for Chevrolets line of full-size pickup trucks. ...

Applications

Busses

The system was first used in the General Motors transit buses deployed in 2004. TheBus, established by Mayor Frank Fasi, is Honolulus only public transit system. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ...

• City bus system by Allison Transmission
  • Albuquerque, New Mexico (twelve busses announced December 21, 2004)
  • Indianapolis, Indiana IndyGo (two busses announced January 24, 2005)
  • Yosemite National Park National Park Service (18 Gillig busses announced April 25, 2005)
  • Shreveport, Louisiana SporTran (one bus announced June 9, 2005)
  • Charlotte, North Carolina Charlotte Area Transit System (2 busses announced June 9, 2005)
  • Springfield, Massachusetts Pioneer Valley Transit Authority (one bus announced October 14, 2005)
  • Aspen, Colorado Roaring Fork Transportation Authority (seven busses announced December 9, 2005)

Allison Transmission is an automobile factory in Indianapolis, Indiana. ... Nickname: The Duke City Motto: Official website: http://www. ... December 21 is the 355th day of the year (356th in leap years) in the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Nickname: Motto: Official website: http://www. ... To meet Wikipedias quality standards, this article may require cleanup. ... January 24 is the 24th day of the year in the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... Yosemite redirects here. ... The National Park Service (NPS) is the United States federal agency that manages all National Parks, many National Monuments, and other conservation and historical properties with various title designations. ... A Gillig Advantage is in service for Harrisonburg Transit on February 18, 2005 in Harrisonburg, Virginia. ... April 25 is the 115th day of the year in the Gregorian Calendar (116th in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... Nickname: Motto: Official website: www. ... June 9 is the 160th day of the year in the Gregorian calendar (161st in leap years), with 205 days remaining. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... County Mecklenburg Flag Mayor Pat McCrory, (R) Area  - Total  - Water 629. ... The Charlotte Area Transit System, commonly referred to as CATS, is the public transit system in Charlotte, North Carolina. ... June 9 is the 160th day of the year in the Gregorian calendar (161st in leap years), with 205 days remaining. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... Motto: Nickname: City of Homes Founded May 14, 1636 Incorporated County Hampden County Borough {{{borough}}} Parrish {{{parrish}}} Mayor Charles Ryan (Dem) Area  - Total  - Water 86. ... The Pioneer Valley Transit Authority (PVTA) oversees and coordinates public transportation in the Pioneer Valley of Western Massachusetts. ... October 14 is the 287th day of the year (288th in Leap years) in the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... View south along Galena Street in downtown Aspen. ... December 9 is the 343rd day (344th in leap years) of the year in the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...

RWD truck

The longitudinal system for light trucks from General Motors will be manufactured at Baltimore Transmission by GM's Alison Transmission division. The nickel-metal hydride batteries will be manufactured by Panasonic EV of Japan.

The system was to be introduced for the 2007 model year in the full-sized GM SUVs, but these were delayed for one year for unspecified reasons. 2007 (MMVII) will be a common year starting on Monday of the Gregorian calendar. ...

• Rear wheel drive truck system
  • GMC Graphyte Hybrid SUV concept (shown at the 2005 NAIAS)
  • 2008 Cadillac Escalade
  • 2008 Chevrolet Tahoe
  • 2008 GMC Yukon
  • 2008 Dodge Durango

Rear wheel drive was a common form of engine/transmission layout used in automobiles throughout the 20th century. ... The GMC Graphyte Hybrid The Graphyte Hybrid is a GMC Truck-branded concept car and sport utility vehicle from General Motors. ... NAIAS 2005, near the Audi exhibit. ... 2008 (MMVIII) will a Leap year starting on Tuesday of the Gregorian calendar. ... The Escalade is a large sport utility vehicle (or SUV) sold by the General Motors luxury brand, Cadillac. ... The Chevrolet Tahoe (and similar GMC Yukon) is a full-size SUV from General Motors. ... The Chevrolet Tahoe (and similar GMC Yukon) is a full-size SUV from General Motors. ... The Durango is a midsized SUV from DaimlerChryslers Dodge brand. ...

FWD car

• Front wheel drive car system
  • Opel Astra Diesel hybrid concept (shown at the 2005 NAIAS)

Front wheel drive is the most common form of engine/transmission layout used in modern passenger cars, where the engine drives the front wheels. ... The Astra is a General Motors (GM) small family car, badged as an Opel in continental Europe, a Vauxhall in the United Kingdom, a Holden in Australasia, and a Chevrolet in Latin America. ... Diesel or Diesel fuel is a specific fractional distillate of fuel oil (mostly petroleum) that is used as fuel in a diesel engine invented by German engineer Rudolf Diesel. ... NAIAS 2005, near the Audi exhibit. ...

References

• David Talbot. Gas-Guzzling Hybrids. Technology Review (April 2005).
• Chevrolet Tahoe with Two-Mode Full Hybrid Exploits Fuel Savings, SUV Driving Pleasure and Performance. General Motors press release. URL accessed on January 9, 2006
• Global Alliance for Hybrid Drive Development: Cooperation between BMW, DaimlerChrysler and GM. General Motors press release. URL accessed on September 9, 2005

Technology Review is an innovation and technology magazine affiliated with the Massachusetts Institute of Technology. ... January 9 is the 9th day of the year in the Gregorian calendar. ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... September 9 is the 252nd day of the year (253rd in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...

See also

• Hybrid car
• Hybrid Synergy Drive

Honda Insight, a hybrid gas-electric vehicle 2004 Toyota Prius, a hybrid gas-electric vehicle A hybrid vehicle uses multiple energy sources or propulsion systems to provide motive power. ... Hybrid Synergy Drive (HSD) is a set of hybrid car technologies developed by Toyota and used in that companys Prius, Highlander Hybrid, Camry HV, and Lexus RX 400h automobiles. ...

External Links

• Hybrid Cars and Vehicles - MixedPower.com