Momentum - March 2018 - 18

TODAY'S
ENGINEERING

CHEVY UNVEILS LARGER, LIGHTER
2019 SILVERADO
With chief rival Ford setting sales records
with its F-Series pickups and FCA's Ram
brand prepared to unveil an all-new Ram
light-duty pickup at the 2018 Detroit auto
show, Chevrolet answered by unveiling
on the eve of the Detroit show the 2019
Silverado 1500 that Mark Reuss, General
Motors executive vice president of Global
Product Development, confirmed is "allnew from the ground up."
That means totally new sheetmetal
that telegraphs the Silverado's larger
footprint and taller profile, but also
includes new frame that contributes
to the 2019 Silverado's claimed weight
reduction of up to 450 lb compared with
a V8-powered crew cab model from the
existing Silverado lineup. Still aiming
to parry Ford's groundbreaking use of
aluminum for the F-Series' body panels-
as well as its cargo bed-Reuss said the
new Silverado's weight reduction is the
"direct result of our expertise in mixed
materials and manufacturing technology."

LARGER BUT LIGHTER
In what's become something of a
development mantra for fullsize pickups,
the all-new Silverado lays claim to an
expanded footprint yet less mass. At a
media briefing prior to the Detroit auto
show, Chevrolet engineers attributed use
of 80% high-strength steels-of gauges
varying between 2 mm and 5 mm-to
a loss of 88 lb from the new truck's
fully-boxed frame that also gains 10% in
torsional rigidity. Reuss said the truck also
uses no less than seven different grades
of steel for the cab's structural safety
cage.
Another 88 lb was chopped from the
2019 Silverado's body panels. All hinged
panels now are fabricated from aluminum.
The fenders, roof and bed continue to
be formed from steel. Meanwhile, forged
aluminum is used for the upper control
arm of the new-design short-/long-arm
front suspension, replacing a heavier
stamped piece. At the rear, the secondstage leaf of the solid-axle suspension on
18 March 2018

Photo credit: Chevrolet

Chevrolet's 2019 Silverado lineup will encompass eight different models, including this new Trail Boss.
LT models is made of a carbon-composite
material that cuts roughly 5 lb at each rear
corner.
The new Silverado's weight reduction
comes despite a larger stance. Although
Chevrolet had yet to provide detailed
specifications, it said the truck's
wheelbase is increased by as much as
3.9 inches, while overall length is up by
about 1.6 inches; most of the wheelbase
increase translates directly to increased
cabin space. And advanced forming
techniques for the interior bedsides that
delivered a significant 7 inches of width
mean an increase in bed volume for every
available bed length. The increase for the
short bed, for example, is 63 ft3, a claimed
20% better than the nearest competitor.
The standard-measure sheet of plywood
now easily lays flat on the new Silverado's
cargo floor, Chevrolet said.

ALL-NEW DIESEL, SKIPFIRING V8S
The 2019 Silverado's powertrain
story matches its materials progress,
highlighted by a new Duramax 3.0-L
inline 6-cylinder diesel available for all
models. Prior to the Detroit auto show,
Ford announced it will offer a new Power
Stroke diesel engine for the first time
for its F-150 (250 hp and 440 lb·ft) and
Ram was expected to confirm it will
offer a diesel for the new-generation
model; Chevrolet did not offer detailed

specifications or power ratings for the
Silverado's Duramax, but Reuss said,
"I'm really confident we'll have the bestperforming diesel in this segment."
The new Silverado's carryover 5.3L and 6.2-L V8s hardly are carryover:
they will feature what Chevrolet said is
the industry-first application of what it
calls Dynamic Fuel Management (DFM)
that can shut down any of up to seven
cylinders. Although engineers would
not confirm it at the 2019 Silverado's
Detroit showing, it is believed to be
the production version of the Dynamic
Skip Fire cylinder-deactivation system
developed by Delphi and Tula Technology.
With the system's sophisticated
software controls, the command to
provide ignition to an individual cylinder
is made immediately prior to each
ignition event, with each event considered
independently and in sequence. The
Delphi/Tula system also provides for allcylinder cutoff during deceleration.
The recently developed 10-speed
automatic transmission will back the
Duramax diesel and the 6.2-L gasoline
V8, but there was no further detail about
other transmission options in what Reuss
said would be a matrix of six powertrain
variants.

Bill Visnic, Editorial Director, Mobility Media,
SAE International

MOMENTUM



Momentum - March 2018

Table of Contents for the Digital Edition of Momentum - March 2018

Momentum - March 2018
Contents
Companies mine talent at CDS competitions
All quiet on the snowmobile front
Monash University a double winner at Formula SAE-Australia
A return to glory days?
Setting the record straight on Baja SAE technical inspection
Paccar reveals new and future tech at CES 2018
OA-X contender moonlights as AFRL testbed
Chevy unveils larger, lighter 2019 Silverado
Students get the spotlight at SAE Carolina Section meeting
SAE 101: WCX World Congress Experience
More U.S.-born faculty: a university responsibility
Dossier: Lauren Goulet of John Deere
Help yourself by helping others
Just announced: new student scholarships—apply by March 15
Momentum - March 2018 - Momentum - March 2018
Momentum - March 2018 - Cover2
Momentum - March 2018 - Contents
Momentum - March 2018 - Companies mine talent at CDS competitions
Momentum - March 2018 - 3
Momentum - March 2018 - 4
Momentum - March 2018 - 5
Momentum - March 2018 - All quiet on the snowmobile front
Momentum - March 2018 - 7
Momentum - March 2018 - 8
Momentum - March 2018 - 9
Momentum - March 2018 - Monash University a double winner at Formula SAE-Australia
Momentum - March 2018 - 11
Momentum - March 2018 - A return to glory days?
Momentum - March 2018 - 13
Momentum - March 2018 - Setting the record straight on Baja SAE technical inspection
Momentum - March 2018 - 15
Momentum - March 2018 - Paccar reveals new and future tech at CES 2018
Momentum - March 2018 - OA-X contender moonlights as AFRL testbed
Momentum - March 2018 - Chevy unveils larger, lighter 2019 Silverado
Momentum - March 2018 - Students get the spotlight at SAE Carolina Section meeting
Momentum - March 2018 - SAE 101: WCX World Congress Experience
Momentum - March 2018 - More U.S.-born faculty: a university responsibility
Momentum - March 2018 - Dossier: Lauren Goulet of John Deere
Momentum - March 2018 - 23
Momentum - March 2018 - Just announced: new student scholarships—apply by March 15
Momentum - March 2018 - Cover3
Momentum - March 2018 - Cover4
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