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Subject: Re: interesting news on the hybrid front | |
Author: Duncan7 |
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Date Posted: 22:54:02 05/12/07 Sat In reply to: sci guy 's message, "interesting news on the hybrid front" on 14:32:03 05/12/07 Sat what do you call that Not so crappy gas mileage or less crappy then before gas mileage? >the power of a hemi, with up to 40% better fuel economy > > >href="http://news.en.autos.sympatico.msn.ca/article.asp >x?cp-documentid=4807256">http://news.en.autos.sympatico >.msn.ca/article.aspx?cp-documentid=4807256 > >Two-Mode Hybrid Chrysler Aspen & Dodge Durango to >Arrive in '08 >Chrysler Group's First Application of Two-Mode Hybrid >advertisement >Canadian Auto Press >The unusual technological alliance between >DaimlerChrysler, BMW and General Motors that started >in 2005 has resulted in a major groundbreaking >advancement in terms of hybrid drivetrains. Each of >the three firms invested approximately one billion >dollars in the research and development, which was >conducted in Michigan at the DaimlerChrysler, GM and >BMW Hybrid Development Centre. A Two-Mode Hybrid >System is the result, first shown in Chevy's Tahoe >Hybrid and then in a number of DCX concept vehicles. >Now it is heading for production in a Dodge and a >Chrysler. The Two-Mode Hybrid System has been designed >to be used on almost every type of vehicle made, >ranging from a compact front-wheel drive car, to a >midsize SUV, to a large pickup truck. With DCX, the >first version of this system will be arriving on the >market starting 2008. >The 2008 Dodge Durango Hybrid and 2008 Chrysler Aspen >Hybrid will be the first gasoline-electric production >vehicles that Chrysler Group has made, which should >help spur interest in the brand’s large SUVs. >Being that the Durango and Aspen are sought after for >their high towing capabilities and ample on-road >performance, Chrysler Group decided to make the >5.7-litre HEMI V8 engine the centerpiece of the new >drivetrain system. Besides offering the muscle needed >in a large sport utility vehicle, this HEMI also >offers MDS cylinder deactivation, which seamlessly >shuts off four cylinders under lighter loads. Combined >with the hybrid assist, Chrysler Group estimates that >the Two-Mode Durango and Aspen will have 25-percent >better fuel economy than their non-hybrid >counterparts. The biggest gains will be observed in >the city, where the engine-stop and electrical assist >are expected to reduce these large SUVs’ thirst by up >to 40-percent! >What makes the Two-Mode hybrid system different than >Toyota’s Hybrid Synergy Drive or Honda’s Integrated >Motor Assist is its layout. It still has a gasoline >motor, a starter/generator and batteries, and can shut >off at stoplights, but the main difference is that it >has two sets of gears in its automatic transmission; >one set is used for the HEMI V8 with four fixed ratios >(i.e. a four-speed automatic), while the other is used >for the twin electric motors. The combination of the >motors and transmissions yields two different >operating modes. The first is at low speeds, where the >vehicle can be powered by either the gasoline engine, >the electric motor or both. It uses the first two >speeds in the automatic transmission. The second mode >is more complex, and revolves around higher speeds and >engine loads. In this situation, the gasoline engine >always runs, but the electric motors kick in at >different points with different ratios, creating the >effect of a CVT transmission for better efficiency. >The Two-Mode system is a rather complicated >drivetrain, but it will ease the thirst and emissions >of large sport utility vehicles. We’re very curious to >see how the system functions, and how the vehicle will >drive, but we’ll have to wait until the Durango and >Aspen Hybrids arrive in 2008. Shortly thereafter, >General Motors’ version of the system will debut in >the Tahoe and Yukon, as well as in its half-ton pickup >truck lineup. [ Next Thread | Previous Thread | Next Message | Previous Message ] |