Cadillac ELR More Details On How the Volt Will Become a Caddy …

10 Июн 2014 | Author: | Комментарии к записи Cadillac ELR More Details On How the Volt Will Become a Caddy … отключены
Cadillac Electric Cars

Cadillac ELR: More On How the Volt Will Become a (Hint: More Power)

Converj concept

In spite of its stupid name, the Cadillac was the hit of the 2009 Detroit auto Beyond the buzz generated from its wedgy, mini-Gallardo the 2+2 range-extended EV coupe added fuel to the ”Why did they the Volt a Chevy?” fire. As you know, Cadillac has green-lighted a version of the Converj, wisely it the ELR in the process—although we’d still a (properly spelled) real to another bowl of alphabet

Since its production announcement, and occasionally entertaining rumors swirled around the car ranging “It ll be just a re-skinned Volt” to re going to put a big turbocharged four-cylinder in It s time to clear the air about the

The ELR Needs More—Everywhere—than the Volt

there are those who complain s range-extended five-door hatchback for something resembling Caddy it is true that the Volt play in Cadillac’s league it comes to interior appointments and refinement. Adding refinement to the car to a Cadillac-worthy model, however, will add more of efficiency’s enemy: weight. First, the car get more sound-deadening materials—the ELR has to be Cadillac quiet, after active engine mounts be employed to tame gas-engine

GM also is considering other such as better hood a coating on the firewall, and better gaskets to keep noise the gasoline range-extender to an absolute There will be, naturally, a of cosseting luxury appointments, will add mass, too. reference, the Volt weighs pounds .)

Piling on pounds that one of the largest ELR engineering is finding a way to avoid making it like a slug while it efficient. The adoption of a larger-displacement or engine in place of the Volt s range-extender could raise the car s some when the batteries are both to recharge them quickly and in the case when the is driving the wheels directly. full advantage of the extra from a more-powerful gas engine almost certainly require the of more-powerful electric motors.

Unfortunately, a new engine likely add even more weight, if a marginal amount. Combined all of the above pound-packing additions, could have a disastrous on the ELR s electric range and MPGe (The 2012 Volt is for 94 MPGe combined and a 35-mile range. We’ve achieved 74 in a Volt and high 20s to mid-30s in of range, depending on conditions and style.)

Chevrolet Volt

Such a drop in efficiency only be offset by increasing the capacity of the drive batteries. One of the for the 2013 Volt is a bump in electrical storage capacity 16.0 kWh to 16.5 kWh. that might not sound much of an increase, every of a kilowatt-hour counts. One way for the heavier ELR s range to match that of the would be to add more prismatic cells to the battery pack.

On the downside, more storage could mean more to fully charge and the need for (at slightly) increased battery-pack capacity. And unless a new battery is used, a higher-capacity battery guessed it—more weight.

All of illuminates a downside to the Voltec in its current form: It doesn t up very well. That’s one we haven t seen GM spread the drive system around the like peanut butter on hot a narrow weight/size matrix which it works best. The breaks down to four drive motor-generator unit, electronics, battery pack, and

As vehicle size increases, the and battery subsystems have to in order to provide the same of performance and economy as the baseline. But as two components increase in size and their cooling requirements increase. More thermal loads mean a higher-capacity system and even more to cart around.

Chevrolet Voltec drive

Cadillac Electric Cars

Bit More of Everything to Maintain

What we’re hearing is the production ELR will swap the 1.4-liter four for a naturally variant of the new Opel-developed Ecotec This all-new powerplant is the base for a future family of direct-injection four-cylinders that eventually replace most of GM s 1 engines. Although the exact of the ELR’s version is not known at time, the block has been to expand to as much as 2.0 liters. We d to see the final version in the Caddy 1.8 liters at most, however.

In to keep the ELR s pure electric at least at the level of the Volt, capacity will be increased to than 17.0 kWh; will be accomplished by increasing the s length and adding cells. the “T” configuration of the pack to carry The Volt s 4ET50 continuously transmission/drive unit will be to match its power output and generation capacity to the new engine.

Comparison Test: 2011 Volt vs. 2011 Chevrolet Eco

Instrumented Test: 2011 Volt

Instrumented Test: Fisker Karma EcoChic

As the will retail for a higher than the Chevy, it will be to absorb more cost; the ELR then incorporate more premium-cost materials. We therefore the ELR to weigh somewhere between and 3950 pounds—or about 100 than the Volt—in spite of the battery pack and ancillary As to that price: This is a and it will carry a Cadillac Trading on the car’s green and cred, don’t be surprised to see the coupe landing with an in the mid-$50K range.

For reference, that s about more than a base CTS

The ELR will not be Voltec’s last There will be other for its more-powerful drive system. up should be the rumored range-extended which is likely to wear a badge.

Cadillac Electric Cars
Cadillac Electric Cars
Cadillac Electric Cars
Cadillac Electric Cars
Cadillac Electric Cars
Cadillac Electric Cars

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