Patfromigh pointed out that, according to publicly available Department of Energy files, Chrysler is experimenting with a mild hybrid, similar to the General Motors system. Both use a belt alternator starter/belt starter generator (BAS/BSG) to provide stop-start, regenerative braking, and low-speed motor assistance. Chrysler’s main difference from GM is the use of an electric belt tensioner, and much greater use of fuel shutoff during deceleration (“iDFSO”).
Current Chrysler vehicles with automatic transmissions already use iDFSO, which cuts off the fuel supply to the engine when the driver coasts, as long as all the right conditions are met (hot catalyst, sufficient battery power, warm engine, etc). GM had a similar system in use decades ago, but for manual-transmission cars (when coasting in gear).
The BSG system was added to allow iDFSO all the way down to a full stop; standard iDFSO is normally available down to 15 mph, and the alternator/starter provides the rest of the capacity. The electric belt tensioner is needed to tighten the belt during power generation, and loosen it during normal motoring. Enhanced voltage regulation and fluid temperature control are also part of the system, as they are in Ram 1500, to cut parasitic losses.
From these documents, it appears that the Department of Energy program to work on fuel reduction has resulted in a transfer of technology to production vehicles — at least, to the 2013 Ram 1500.
FCA CEO Sergio Marchionne has long expressed his desire to slash the number of Fiat and Chrysler platforms, emulating Volkswagen’s “back to the future” move of putting just about everything onto a single platform. Mr. Marchionne has allowed major exceptions; the combination of an over-ambitious plan and a grip on reality delayed the Jeep Renegade and some other cars, because the [...]
We may have the first clear 2017 Chrysler Town & Country minivan spy shots, adding to a small “phone pic” shot posted some time ago. The vehicle, parked with the Chrysler Technical Center in sight, has camouflage and padding, but you can clearly see the openings for the side and front door handles. The photo gives some idea of the relatively length [...]
The Ram 1500 faced down the aluminum-bodied Ford F-150 and new Chevrolet Silverado in Motor Trend’s half-ton truck shootout. The three contenders were put through a broad array of testing, including a 260-mile drive through California and Arizona. Measurements included: Testing without load: 0-60 mph and 1/4-mile acceleration, 60-0 mph braking, and maximum lateral grip (Ram was Limits-handling without load: closed-course cornering, braking, [...]
This year’s winners of the prestigious Ward’s Top Ten were (in alphabetical order) the BMW 5-series electric motor, the Corvette Stingray’s 6.2 liter V8, the Dodge Challenger SRT Hellcat V8, the Ford Fiesta three-cylinder, one-liter turbo, Hyundai Tuscon fuel cell vehicle, Mini Cooper 1.5 turbo three cylinder, the Ram 3-liter VM diesel, Subaru WRX four-cylinder turbo, VW Golf 1.8 liter [...]
Some time ago, Sergio Marchionne, head of Fiat Chrysler, said that the only way to reboot Alfa Romeo would be by amortizing engineering costs with Dodge. That’s gone down the memory hole, now. It had to. The Alfisti will have fitsies if they overtly share with Chrysler. The D-RWD platform is now Giorgio, an Italian name for something developed largely in Auburn [...]