The new
2016 Hyundai Tucson will arrive
later this year, but not all of its variants will be offered in the U.S.
At the
Geneva Motor Show earlier this month, Hyundai showed off two hybrid
models we likely won't see: a 48-volt mild hybrid and a plug-in hybrid, both of
them fitted with diesel engines.
Hyundai has an aggressive
program of rolling out green powertrain technologies, with next-generation
hybrid and its first plug-in hybrid models of both the latest Hyundai Sonata.
That car's
sibling under the skin, the Kia Optima, will also offer the same pair of
hybrids.
Thus
far, Hyundai's said nothing
about hybrid crossover utility vehicles or SUVs. Indeed, hybrids are far
scarcer among compact SUVs.
Today,
in fact, the Lexus NX 200h is the sole entry in that segment.
But the
Hyundai Tucson 48V Hybrid
shown in Geneva may point the way toward a lower-cost system that could be
rolled out in other Hyundai
and Kia products.
It's an
evolution of the maker's previous starter-generator hybrid system, but adds a
48-volt lithium-ion battery, along with an inverter and a low-voltage DC-DC
converter.
The
generator, which replaces a conventional starter motor, charges the battery and
can add supplemental torque to the engine's output as well as restarting the
engine from a stop.
It is
used with a 134-horsepower 2.0-liter turbodiesel engine paired to a six-speed
manual gearbox.
Total
output of the engine and motor together is 110 kW (roughly 150 hp).
The
entire package is said to weigh just 44 pounds (20 kg) and cost just a quarter
of the total of a full-hybrid system.
It's
broadly similar to systems offered by General Motors, known as
Belt-Alternator-Starter (BAS) in their first generation and now eAssist in
their latest incarnation, though sales of eAssist-equipped vehicles have been
underwhelming.
The
second hybrid at Geneva was a Tucson Plug-In Hybrid, which uses an electric
motor to power the rear axle and a conventional diesel engine and transmission
up front.
This
"through-the-road hybrid" system is very likely similar to the the
one shown on the Kia Soul Trail'ster Concept at the Chicago Auto Show last
month.
In its
European version, the new Hyundai
Tucson uses a 1.7-liter turbodiesel and a seven-speed dual-clutch transmission.
The
Plug-In Hybrid adds a 10.7-kilowatt-hour lithium-ion battery pack and an 85-kW
motor on the rear axle.
Thta
gives it a stated electric range of more than 30 miles (50 km) on the gentle
European test cycle.
The car
can operate in electric-only, diesel-only, or combined modes, with a total
combined output of the engine and motor at 135 kW (180 hp) and a substantial
350 lb-ft of torque.
Hyundai notes that
those figures "could be increased significantly" in future
generations of the system.
While Hyundai and Kia are
reportedly assessing whether to offer a diesel engine option in some of their
future products, the combination of diesel and hybrid remains unlikely for
North America.
Thus
far no maker has plans to sell a vehicle with both those systems--each of which
adds substantial cost to the vehicle--given the low penetration of each
technology thus far into the passenger-car market.
It's
more likely, however, that the through-the-road plug-in hybrid system will be
used to add all-wheel drive to selected Hyundai and
Kia models, paired with a gasoline engine.
Details
on the U.S. version of the 2016 Hyundai Tucson will be
released at the New York Auto Show that kicks off two weeks from now.
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