RossD
MegaDork
1/1/19 8:49 a.m.
- The new 2.0L Four-Cylinder DOHC Turbo Engine with eTorque Technology produces 270 horsepower and 295 lb-ft of torque. The eTorque Technology features a belt start generator that uses a modified alternator to generate current, but also doubles as a starter to restart the engine after the vehicle comes to a full stop. The belt start generator is connected to the engine's crankshaft by a serpentine belt and optimizes fuel economy by applying positive power to the crankshaft for an electric boost under certain conditions.
Straight from their website. Interesting, I wasn't aware this was a thing
Belt-alternator-starter (BAS) hybrids have been around for a while, starting with the Saturn Vue and Chevy Malibu. But 270 HP from a Jeep 2.0L is bonkers!
In reply to maschinenbau :
Evo Xs and Patriots used the same basic engine, not quite sure how "bonkers" it is.
How much of that power is from the generator/starter? Seems like it would put a fair amount of stress on a belt.
In reply to itsarebuild :
If it's like the GM light hybrid, only about 30-40ft-lb, max. It isn't enough to do major acceleration, it mostly allows you to shove off a little from a light before the engine kicks in. IIRC Jeep/Chrysler plan on using it to give a temporary boost once already moving, more like a KERS system than any kind of traditional hybrid.
This is well within the capability of a 7 rib belt.
RossD
MegaDork
1/1/19 10:39 a.m.
Didnt the supercharger on the LSA CTS-V use 100hp? That was on a belt.
My Case 442 garden tractor had that in 1970.
Knurled. said:
In reply to maschinenbau :
Evo Xs and Patriots used the same basic engine, not quite sure how "bonkers" it is.
Patriot had a 4b11? Or a variant of the 4b1?
This is a neat motor on paper.
yupididit said:
Knurled. said:
In reply to maschinenbau :
Evo Xs and Patriots used the same basic engine, not quite sure how "bonkers" it is.
Patriot had a 4b11? Or a variant of the 4b1?
Hyundai, Mopar, and Mitsubishi all used the same basic engine in that timeframe (the "GEMA" engine) with detail differences.
Granted, the Evo engine is about as similar to the Patriot as an LSA is to a 5.3 truck engine, but it's the same architecture.
The interesting thing is, the Patriot's actual chassis looks a lot like a stretched-up Dodge Colt/Mitsubishi Mirage.
In reply to Knurled. :
So it’s almost like just swapping the accessory drive power from the crank to the generator to deal with parasitic drag? With maybe a little extra oomph...?
In reply to itsarebuild :
That's what it looks like. The GM setup replaced the alternator with a stonkin' big 3 phase motor/generator assembly. The PITA of the setup was how the belt tensioner had to accomodate the belt sometimes being driven by the crank, and sometimes being driven by the "alternator" and driving the crank. They came up with this massively spring loaded double-pivot thing.
GM actually drove the vehicle with the engine off under light loads and under certain speeds. (Through a traditional automatic trans, too) My reading of the press releases seems to indicate that the Mopar setup never has the engine off, the electric motor is just an assist.
mazdeuce - Seth said:
This is a neat motor on paper.
This is the motor they developed out of the Alfa Guila motor correct?
One of the YouTube channels I watch, drove one in Moab. It can definitely hold its own.
Wave of the future. You can get a turbo four in the Silverado now, and it's the only engine type available in the new Ranger. But from everything I've heard, they are every bit as capable as the bigger motors of yesteryear, but they are cleaner and more fuel efficient. Win-win, IMO.
It sounds like Fiat is extending the life of some of its powertrains by adding on these electric motors. There are variants going into the 3.6L and 5.7L on the Ram, as well but I read that they are different models between those two engines. Just like every other manufacturer the 2.0T is becoming the upmarket engine and the naturally aspirated V6 will be base model material.
